Merge #2598

2598: Allow specifying an OpenGL version manually r=def- a=Jupeyy

Ofc don't merge, we'll test it first, and if we want merge it, i'd need to enable shader compability for OpenGL 4+, and general support for OpenGL 3.1 and 3.2(bcs i think they already don't allow some older GL commands).

Also i never really read in the OpenGL 1.x specification, i remember that older OpenGL versions required glBegin and stuff like that

Co-authored-by: Jupeyy <jupjopjap@gmail.com>

CMakeLists.txt

@@ -1127,20 +1127,12 @@ set(EXPECTED_DATA
   maps7/Gold\ Mine.map
   maps7/readme.txt
   particles.png
-  shader/bordertile.frag
-  shader/bordertile.vert
-  shader/bordertileline.frag
-  shader/bordertileline.vert
-  shader/bordertilelinetex.frag
-  shader/bordertilelinetex.vert
-  shader/bordertiletex.frag
-  shader/bordertiletex.vert
+  shader/pipeline.frag
+  shader/pipeline.vert
   shader/prim.frag
   shader/prim.vert
   shader/quad.frag
   shader/quad.vert
-  shader/quadtex.frag
-  shader/quadtex.vert
   shader/sprite.frag
   shader/sprite.vert
   shader/spritemulti.frag
@@ -1149,8 +1141,6 @@ set(EXPECTED_DATA
   shader/text.vert
   shader/tile.frag
   shader/tile.vert
-  shader/tiletex.frag
-  shader/tiletex.vert
   "skins/Ablush NeoN.png"
   skins/Aoe4leg.png
   "skins/Apish Coke.png"

data/shader/bordertile.frag

@@ -1,10 +0,0 @@
-#version 330
-
-uniform vec4 vertColor;
-
-out vec4 FragClr;
-
-void main()
-{
-	FragClr = vertColor;
-}

data/shader/bordertile.vert

@@ -1,20 +0,0 @@
-#version 330
-
-layout (location = 0) in vec2 inVertex;
-
-uniform mat4x2 Pos;
-
-uniform vec2 Offset;
-uniform vec2 Dir;
-uniform int JumpIndex;
-
-void main()
-{
-	vec4 VertPos = vec4(inVertex, 0.0, 1.0);
-	int XCount = gl_InstanceID - (int(gl_InstanceID/JumpIndex) * JumpIndex);
-	int YCount = (int(gl_InstanceID/JumpIndex));
-	VertPos.x += Offset.x + Dir.x * XCount;
-	VertPos.y += Offset.y + Dir.y * YCount;
-		
-	gl_Position = vec4(Pos * VertPos, 0.0, 1.0);
-}

data/shader/bordertileline.frag

@@ -1,9 +0,0 @@
-#version 330
-
-uniform vec4 vertColor;
-
-out vec4 FragClr;
-void main()
-{
-	FragClr = vertColor;
-}

data/shader/bordertileline.vert

@@ -1,17 +0,0 @@
-#version 330
-
-layout (location = 0) in vec2 inVertex;
-
-uniform mat4x2 Pos;
-
-uniform vec2 Dir;
-uniform vec2 Offset;
-
-void main()
-{
-	vec4 VertPos = vec4(inVertex.x + Offset.x, inVertex.y + Offset.y, 0.0, 1.0);
-	VertPos.x += Dir.x * gl_InstanceID;
-	VertPos.y += Dir.y * gl_InstanceID;
-		
-	gl_Position = vec4(Pos * VertPos, 0.0, 1.0);
-}

data/shader/bordertilelinetex.frag

@@ -1,15 +0,0 @@
-#version 330
-
-uniform sampler2D textureSampler;
-
-uniform vec4 vertColor;
-uniform float LOD;
-
-noperspective in vec2 texCoord;
-
-out vec4 FragClr;
-void main()
-{
-	vec4 tex = textureLod(textureSampler, texCoord, LOD);
-	FragClr = tex * vertColor;
-}

data/shader/bordertilelinetex.vert

@@ -1,27 +0,0 @@
-#version 330
-
-layout (location = 0) in vec2 inVertex;
-layout (location = 1) in vec2 inVertexTexCoord;
-layout (location = 2) in ivec2 inVertexTexRightOrBottom;
-
-uniform mat4x2 Pos;
-uniform float TexelOffset;
-
-uniform vec2 Dir;
-uniform vec2 Offset;
-
-noperspective out vec2 texCoord;
-
-void main()
-{
-	vec4 VertPos = vec4(inVertex.x + Offset.x, inVertex.y + Offset.y, 0.0, 1.0);
-	VertPos.x += Dir.x * gl_InstanceID;
-	VertPos.y += Dir.y * gl_InstanceID;
-		
-	gl_Position = vec4(Pos * VertPos, 0.0, 1.0);
-
-	float tx = (inVertexTexCoord.x/(16.0));
-	float ty = (inVertexTexCoord.y/(16.0));
-
-	texCoord = vec2(tx + (inVertexTexRightOrBottom.x == 0 ? TexelOffset : -TexelOffset), ty + (inVertexTexRightOrBottom.y == 0 ? TexelOffset : -TexelOffset));
-}

data/shader/bordertiletex.frag

@@ -1,15 +0,0 @@
-#version 330
-
-uniform sampler2D textureSampler;
-
-uniform vec4 vertColor;
-uniform float LOD;
-
-noperspective in vec2 texCoord;
-
-out vec4 FragClr;
-void main()
-{
-	vec4 tex = textureLod(textureSampler, texCoord, LOD);
-	FragClr = tex * vertColor;
-}

data/shader/bordertiletex.vert

@@ -1,30 +0,0 @@
-#version 330
-
-layout (location = 0) in vec2 inVertex;
-layout (location = 1) in vec2 inVertexTexCoord;
-layout (location = 2) in ivec2 inVertexTexRightOrBottom;
-
-uniform mat4x2 Pos;
-uniform float TexelOffset;
-
-uniform vec2 Offset;
-uniform vec2 Dir;
-uniform int JumpIndex;
-
-noperspective out vec2 texCoord;
-
-void main()
-{
-	vec4 VertPos = vec4(inVertex, 0.0, 1.0);
-	int XCount = gl_InstanceID - (int(gl_InstanceID/JumpIndex) * JumpIndex);
-	int YCount = (int(gl_InstanceID/JumpIndex));
-	VertPos.x += Offset.x + Dir.x * XCount;
-	VertPos.y += Offset.y + Dir.y * YCount;
-		
-	gl_Position = vec4(Pos * VertPos, 0.0, 1.0);
-
-	float tx = (inVertexTexCoord.x/(16.0));
-	float ty = (inVertexTexCoord.y/(16.0));
-
-	texCoord = vec2(tx + (inVertexTexRightOrBottom.x == 0 ? TexelOffset : -TexelOffset), ty + (inVertexTexRightOrBottom.y == 0 ? TexelOffset : -TexelOffset));
-}

data/shader/pipeline.frag

@@ -0,0 +1,18 @@
+#ifdef TW_TEXTURED
+#ifdef TW_3D_TEXTURED
+uniform sampler3D gTextureSampler;
+#else
+uniform sampler2DArray gTextureSampler;
+#endif
+#endif
+
+void main()
+{
+#ifdef TW_TEXTURED
+	vec4 TexColor = texture(gTextureSampler, gl_TexCoord[0].xyz).rgba;
+	gl_FragColor = TexColor.rgba * gl_Color.rgba;
+#else
+	gl_FragColor = gl_Color.rgba;
+#endif
+}
+

data/shader/pipeline.vert

@@ -0,0 +1,11 @@
+uniform mat4x2 gPos;
+
+void main()
+{
+	gl_Position = vec4(gPos * vec4(gl_Vertex.xy, 0.0, 1.0), 0.0, 1.0);
+#ifdef TW_TEXTURED
+	gl_TexCoord[0] = gl_MultiTexCoord0;
+#endif
+	gl_FrontColor = gl_Color.rgba;
+	gl_BackColor = gl_Color.rgba;
+}

data/shader/prim.frag

@@ -1,5 +1,3 @@
-#version 330
-
 uniform int isTextured;
 uniform sampler2D textureSampler;
 

data/shader/prim.vert

@@ -1,5 +1,3 @@
-#version 330
-
 layout (location = 0) in vec2 inVertex;
 layout (location = 1) in vec2 inVertexTexCoord;
 layout (location = 2) in vec4 inVertexColor;

data/shader/quad.frag

@@ -1,11 +1,22 @@
-#version 330
+#ifdef TW_QUAD_TEXTURED
+uniform sampler2D gTextureSampler;
+#endif
 
-uniform vec4 vertColor;
+uniform vec4 gVertColors[TW_MAX_QUADS];
 
-noperspective in vec4 quadColor;
+noperspective in vec4 QuadColor;
+flat in int QuadIndex;
+#ifdef TW_QUAD_TEXTURED
+noperspective in vec2 TexCoord;
+#endif
 
 out vec4 FragClr;
 void main()
 {
-	FragClr = quadColor * vertColor;
+#ifdef TW_QUAD_TEXTURED
+	vec4 TexColor = texture(gTextureSampler, TexCoord);
+	FragClr = TexColor * QuadColor * gVertColors[QuadIndex];
+#else
+	FragClr = QuadColor * gVertColors[QuadIndex];
+#endif
 }

data/shader/quad.vert

@@ -1,31 +1,42 @@
-#version 330
-
 layout (location = 0) in vec4 inVertex;
 layout (location = 1) in vec4 inColor;
+#ifdef TW_QUAD_TEXTURED
+layout (location = 2) in vec2 inVertexTexCoord;
+#endif
 
-uniform mat4x2 Pos;
+uniform mat4x2 gPos;
 
-uniform vec2 Offset;
-uniform float Rotation;
+uniform vec2 gOffsets[TW_MAX_QUADS];
+uniform float gRotations[TW_MAX_QUADS];
 
-noperspective out vec4 quadColor;
+noperspective out vec4 QuadColor;
+flat out int QuadIndex;
+#ifdef TW_QUAD_TEXTURED
+noperspective out vec2 TexCoord;
+#endif
 
 void main()
 {
 	vec2 FinalPos = vec2(inVertex.xy);
+	
+	int TmpQuadIndex = int(gl_VertexID / 4);
 
-	if(Rotation != 0.0)
+	if(gRotations[TmpQuadIndex] != 0.0)
 	{
 		float X = FinalPos.x - inVertex.z;
 		float Y = FinalPos.y - inVertex.w;
 		
-		FinalPos.x = X * cos(Rotation) - Y * sin(Rotation) + inVertex.z;
-		FinalPos.y = X * sin(Rotation) + Y * cos(Rotation) + inVertex.w;
+		FinalPos.x = X * cos(gRotations[TmpQuadIndex]) - Y * sin(gRotations[TmpQuadIndex]) + inVertex.z;
+		FinalPos.y = X * sin(gRotations[TmpQuadIndex]) + Y * cos(gRotations[TmpQuadIndex]) + inVertex.w;
 	}
 	
-	FinalPos.x = FinalPos.x / 1024.0 + Offset.x;
-	FinalPos.y = FinalPos.y / 1024.0 + Offset.y;
+	FinalPos.x = FinalPos.x / 1024.0 + gOffsets[TmpQuadIndex].x;
+	FinalPos.y = FinalPos.y / 1024.0 + gOffsets[TmpQuadIndex].y;
 
-	gl_Position = vec4(Pos * vec4(FinalPos, 0.0, 1.0), 0.0, 1.0);
-	quadColor = inColor;
+	gl_Position = vec4(gPos * vec4(FinalPos, 0.0, 1.0), 0.0, 1.0);
+	QuadColor = inColor;
+	QuadIndex = TmpQuadIndex;
+#ifdef TW_QUAD_TEXTURED
+	TexCoord = inVertexTexCoord;
+#endif
 }

data/shader/quadtex.frag

@@ -1,15 +0,0 @@
-#version 330
-
-uniform sampler2D textureSampler;
-
-uniform vec4 vertColor;
-
-noperspective in vec2 texCoord;
-noperspective in vec4 quadColor;
-
-out vec4 FragClr;
-void main()
-{
-	vec4 tex = texture(textureSampler, texCoord);
-	FragClr = tex * quadColor * vertColor;	
-}

data/shader/quadtex.vert

@@ -1,34 +0,0 @@
-#version 330
-
-layout (location = 0) in vec4 inVertex;
-layout (location = 1) in vec2 inVertexTexCoord;
-layout (location = 2) in vec4 inColor;
-
-uniform mat4x2 Pos;
-
-uniform vec2 Offset;
-uniform float Rotation;
-
-noperspective out vec2 texCoord;
-noperspective out vec4 quadColor;
-
-void main()
-{
-	vec2 FinalPos = vec2(inVertex.xy);
-
-	if(Rotation != 0.0)
-	{
-		float X = FinalPos.x - inVertex.z;
-		float Y = FinalPos.y - inVertex.w;
-		
-		FinalPos.x = X * cos(Rotation) - Y * sin(Rotation) + inVertex.z;
-		FinalPos.y = X * sin(Rotation) + Y * cos(Rotation) + inVertex.w;
-	}
-	
-	FinalPos.x = FinalPos.x / 1024.0 + Offset.x;
-	FinalPos.y = FinalPos.y / 1024.0 + Offset.y;
-
-	gl_Position = vec4(Pos * vec4(FinalPos, 0.0, 1.0), 0.0, 1.0);
-	texCoord = inVertexTexCoord;
-	quadColor = inColor;
-}

data/shader/sprite.frag

@@ -1,5 +1,3 @@
-#version 330
-
 uniform sampler2D textureSampler;
 
 uniform vec4 VerticesColor;

data/shader/sprite.vert

@@ -1,5 +1,3 @@
-#version 330
-
 layout (location = 0) in vec2 inVertex;
 layout (location = 1) in vec2 inVertexTexCoord;
 layout (location = 2) in vec4 inVertexColor;

data/shader/spritemulti.frag

@@ -1,5 +1,3 @@
-#version 330
-
 uniform sampler2D textureSampler;
 
 uniform vec4 VerticesColor;

data/shader/spritemulti.vert

@@ -1,5 +1,3 @@
-#version 330
-
 layout (location = 0) in vec2 inVertex;
 layout (location = 1) in vec2 inVertexTexCoord;
 layout (location = 2) in vec4 inVertexColor;

data/shader/text.frag

@@ -1,5 +1,3 @@
-#version 330
-
 uniform sampler2D textSampler;
 uniform sampler2D textOutlineSampler;
 

data/shader/text.vert

@@ -1,5 +1,3 @@
-#version 330
-
 layout (location = 0) in vec2 inVertex;
 layout (location = 1) in vec2 inVertexTexCoord;
 layout (location = 2) in vec4 inVertexColor;

data/shader/tile.frag

@@ -1,10 +1,24 @@
-#version 330
+#ifdef TW_TILE_TEXTURED
+#ifdef TW_TILE_3D_TEXTURED
+uniform sampler3D gTextureSampler;
+#else
+uniform sampler2DArray gTextureSampler;
+#endif
+#endif
 
-uniform vec4 vertColor;
+uniform vec4 gVertColor;
+
+#ifdef TW_TILE_TEXTURED
+noperspective in vec3 TexCoord;
+#endif
 
 out vec4 FragClr;
-
 void main()
 {
-	FragClr = vertColor;
+#ifdef TW_TILE_TEXTURED
+	vec4 TexColor = texture(gTextureSampler, TexCoord.xyz);
+	FragClr = TexColor * gVertColor;
+#else
+	FragClr = gVertColor;
+#endif
 }

data/shader/tile.vert

@@ -1,10 +1,44 @@
-#version 330
-
 layout (location = 0) in vec2 inVertex;
+#ifdef TW_TILE_TEXTURED
+layout (location = 1) in vec3 inVertexTexCoord;
+#endif
 
-uniform mat4x2 Pos;
+uniform mat4x2 gPos;
+
+#if defined(TW_TILE_BORDER) || defined(TW_TILE_BORDER_LINE)
+uniform vec2 gDir;
+uniform vec2 gOffset;
+#endif
+
+#if defined(TW_TILE_BORDER)
+uniform int gJumpIndex;
+#endif
+
+#ifdef TW_TILE_TEXTURED
+noperspective out vec3 TexCoord;
+#endif
 
 void main()
 {
-	gl_Position = vec4(Pos * vec4(inVertex, 0.0, 1.0), 0.0, 1.0);
+#if defined(TW_TILE_BORDER)
+	vec4 VertPos = vec4(inVertex, 0.0, 1.0);
+	int XCount = gl_InstanceID - (int(gl_InstanceID/gJumpIndex) * gJumpIndex);
+	int YCount = (int(gl_InstanceID/gJumpIndex));
+	VertPos.x += gOffset.x + gDir.x * XCount;
+	VertPos.y += gOffset.y + gDir.y * YCount;
+		
+	gl_Position = vec4(gPos * VertPos, 0.0, 1.0);
+#elif defined(TW_TILE_BORDER_LINE)
+	vec4 VertPos = vec4(inVertex.x + gOffset.x, inVertex.y + gOffset.y, 0.0, 1.0);
+	VertPos.x += gDir.x * gl_InstanceID;
+	VertPos.y += gDir.y * gl_InstanceID;
+		
+	gl_Position = vec4(gPos * VertPos, 0.0, 1.0);
+#else
+	gl_Position = vec4(gPos * vec4(inVertex, 0.0, 1.0), 0.0, 1.0);
+#endif
+
+#ifdef TW_TILE_TEXTURED
+	TexCoord = inVertexTexCoord;
+#endif
 }

data/shader/tiletex.frag

@@ -1,15 +0,0 @@
-#version 330
-
-uniform sampler2D textureSampler;
-
-uniform vec4 vertColor;
-uniform float LOD;
-
-noperspective in vec2 texCoord;
-
-out vec4 FragClr;
-void main()
-{
-	vec4 tex = textureLod(textureSampler, texCoord, LOD);
-	FragClr = tex * vertColor;	
-}

data/shader/tiletex.vert

@@ -1,20 +0,0 @@
-#version 330
-
-layout (location = 0) in vec2 inVertex;
-layout (location = 1) in vec2 inVertexTexCoord;
-layout (location = 2) in ivec2 inVertexTexRightOrBottom;
-
-uniform mat4x2 Pos;
-uniform float TexelOffset;
-
-noperspective out vec2 texCoord;
-
-void main()
-{
-	gl_Position = vec4(Pos * vec4(inVertex, 0.0, 1.0), 0.0, 1.0);
-
-	float tx = (inVertexTexCoord.x/(16.0));
-	float ty = (inVertexTexCoord.y/(16.0));
-
-	texCoord = vec2(tx + (inVertexTexRightOrBottom.x == 0 ? TexelOffset : -TexelOffset), ty + (inVertexTexRightOrBottom.y == 0 ? TexelOffset : -TexelOffset));
-}

src/engine/client/backend_sdl.h

@@ -5,6 +5,8 @@
 
 #include "graphics_threaded.h"
 
+#include <atomic>
+
 # if defined(CONF_PLATFORM_MACOSX)
 	#include <objc/objc-runtime.h>
 
@@ -73,96 +75,223 @@ public:
 	bool RunCommand(const CCommandBuffer::SCommand  *pBaseCommand);
 };
 
-// takes care of opengl related rendering
-class CCommandProcessorFragment_OpenGL
+
+struct SBackendCapabilites
 {
-	struct CTexture
-	{
-		GLuint m_Tex;
-		int m_MemSize;
+	bool m_TileBuffering;
+	bool m_QuadBuffering;
+	bool m_TextBuffering;
+	bool m_QuadContainerBuffering;
 
-		int m_Width;
-		int m_Height;
-		int m_RescaleCount;
-	};
-	CTexture m_aTextures[CCommandBuffer::MAX_TEXTURES];
-	volatile int *m_pTextureMemoryUsage;
+	bool m_MipMapping;
+	bool m_NPOTTextures;
+	bool m_3DTextures;
+	bool m_2DArrayTextures;
+	bool m_2DArrayTexturesAsExtension;
+	bool m_ShaderSupport;
 
-	GLint m_MaxTexSize;
-public:
-	enum
-	{
-		CMD_INIT = CCommandBuffer::CMDGROUP_PLATFORM_OPENGL,
-	};
-
-	struct SCommand_Init : public CCommandBuffer::SCommand
-	{
-		SCommand_Init() : SCommand(CMD_INIT) {}
-		volatile int *m_pTextureMemoryUsage;
-	};
-
-private:
-	static int TexFormatToOpenGLFormat(int TexFormat);
-	static unsigned char Sample(int w, int h, const unsigned char *pData, int u, int v, int Offset, int ScaleW, int ScaleH, int Bpp);
-	static void *Rescale(int Width, int Height, int NewWidth, int NewHeight, int Format, const unsigned char *pData);
-
-	void SetState(const CCommandBuffer::SState &State);
-
-	void Cmd_Init(const SCommand_Init *pCommand);
-	void Cmd_Texture_Update(const CCommandBuffer::SCommand_Texture_Update *pCommand);
-	void Cmd_Texture_Destroy(const CCommandBuffer::SCommand_Texture_Destroy *pCommand);
-	void Cmd_Texture_Create(const CCommandBuffer::SCommand_Texture_Create *pCommand);
-	void Cmd_Clear(const CCommandBuffer::SCommand_Clear *pCommand);
-	void Cmd_Render(const CCommandBuffer::SCommand_Render *pCommand);
-	void Cmd_Screenshot(const CCommandBuffer::SCommand_Screenshot *pCommand);
-
-public:
-	CCommandProcessorFragment_OpenGL();
-
-	bool RunCommand(const CCommandBuffer::SCommand  *pBaseCommand);
+	int m_ContextMajor;
+	int m_ContextMinor;
+	int m_ContextPatch;
 };
 
-
-#define MAX_STREAM_BUFFER_COUNT 30
-
 class CGLSLProgram;
 class CGLSLTWProgram;
 class CGLSLPrimitiveProgram;
 class CGLSLQuadProgram;
 class CGLSLTileProgram;
-class CGLSLBorderTileProgram;
-class CGLSLBorderTileLineProgram;
 class CGLSLTextProgram;
 class CGLSLSpriteProgram;
 class CGLSLSpriteMultipleProgram;
-// takes care of opengl 3.3 related rendering
-class CCommandProcessorFragment_OpenGL3_3
+
+// takes care of opengl related rendering
+class CCommandProcessorFragment_OpenGL
 {
-	bool m_UseMultipleTextureUnits;
-	bool m_UsePreinitializedVertexBuffer;
-	
+protected:
 	struct CTexture
 	{
+		CTexture() : m_Tex2DArray(0), m_Sampler2DArray(0) {}
 		GLuint m_Tex;
+		GLuint m_Tex2DArray; //or 3D texture as fallback
 		GLuint m_Sampler;
+		GLuint m_Sampler2DArray; //or 3D texture as fallback
 		int m_LastWrapMode;
+
 		int m_MemSize;
 
 		int m_Width;
 		int m_Height;
-
 		int m_RescaleCount;
+		float m_ResizeWidth;
+		float m_ResizeHeight;
 	};
 	CTexture m_aTextures[CCommandBuffer::MAX_TEXTURES];
-	volatile int *m_pTextureMemoryUsage;
+	std::atomic<int> *m_pTextureMemoryUsage;
+
+	GLint m_MaxTexSize;
+
+	bool m_Has2DArrayTextures;
+	bool m_Has2DArrayTexturesAsExtension;
+	GLenum m_2DArrayTarget;
+	bool m_Has3DTextures;
+	bool m_HasMipMaps;
+	bool m_HasNPOTTextures;
+
+	bool m_HasShaders;
+	int m_LastBlendMode; //avoid all possible opengl state changes
+	bool m_LastClipEnable;
+public:
+	enum
+	{
+		CMD_INIT = CCommandBuffer::CMDGROUP_PLATFORM_OPENGL,
+		CMD_SHUTDOWN = CMD_INIT + 1,
+	};
+
+	struct SCommand_Init : public CCommandBuffer::SCommand
+	{
+		SCommand_Init() : SCommand(CMD_INIT) {}
+		class IStorage *m_pStorage;
+		std::atomic<int> *m_pTextureMemoryUsage;
+		const SBackendCapabilites* m_pCapabilities;
+	};
+
+	struct SCommand_Shutdown : public CCommandBuffer::SCommand
+	{
+		SCommand_Shutdown() : SCommand(CMD_SHUTDOWN) {}
+	};
+
+protected:
+	void SetState(const CCommandBuffer::SState &State, bool Use2DArrayTexture = false);
+	virtual bool IsNewApi() { return false; }
+
+	static int TexFormatToOpenGLFormat(int TexFormat);
+	static int TexFormatToImageColorChannelCount(int TexFormat);
+	static unsigned char Sample(int w, int h, const unsigned char *pData, int u, int v, int Offset, int ScaleW, int ScaleH, int Bpp);
+	static void *Rescale(int Width, int Height, int NewWidth, int NewHeight, int Format, const unsigned char *pData);
+	static void *Resize(int Width, int Height, int NewWidth, int NewHeight, int Format, const unsigned char *pData);
+
+	virtual void Cmd_Init(const SCommand_Init *pCommand);
+	virtual void Cmd_Shutdown(const SCommand_Shutdown *pCommand) {}
+	virtual void Cmd_Texture_Update(const CCommandBuffer::SCommand_Texture_Update *pCommand);
+	virtual void Cmd_Texture_Destroy(const CCommandBuffer::SCommand_Texture_Destroy *pCommand);
+	virtual void Cmd_Texture_Create(const CCommandBuffer::SCommand_Texture_Create *pCommand);
+	virtual void Cmd_Clear(const CCommandBuffer::SCommand_Clear *pCommand);
+	virtual void Cmd_Render(const CCommandBuffer::SCommand_Render *pCommand);
+	virtual void Cmd_Screenshot(const CCommandBuffer::SCommand_Screenshot *pCommand);
+
+	virtual void Cmd_CreateBufferObject(const CCommandBuffer::SCommand_CreateBufferObject *pCommand) {}
+	virtual void Cmd_RecreateBufferObject(const CCommandBuffer::SCommand_RecreateBufferObject *pCommand) {}
+	virtual void Cmd_UpdateBufferObject(const CCommandBuffer::SCommand_UpdateBufferObject *pCommand) {}
+	virtual void Cmd_CopyBufferObject(const CCommandBuffer::SCommand_CopyBufferObject *pCommand) {}
+	virtual void Cmd_DeleteBufferObject(const CCommandBuffer::SCommand_DeleteBufferObject *pCommand) {}
+
+	virtual void Cmd_CreateBufferContainer(const CCommandBuffer::SCommand_CreateBufferContainer *pCommand) {}
+	virtual void Cmd_UpdateBufferContainer(const CCommandBuffer::SCommand_UpdateBufferContainer *pCommand) {}
+	virtual void Cmd_DeleteBufferContainer(const CCommandBuffer::SCommand_DeleteBufferContainer *pCommand) {}
+	virtual void Cmd_IndicesRequiredNumNotify(const CCommandBuffer::SCommand_IndicesRequiredNumNotify *pCommand) {}
+		
+	virtual void Cmd_RenderTileLayer(const CCommandBuffer::SCommand_RenderTileLayer *pCommand) {}
+	virtual void Cmd_RenderBorderTile(const CCommandBuffer::SCommand_RenderBorderTile *pCommand) {}
+	virtual void Cmd_RenderBorderTileLine(const CCommandBuffer::SCommand_RenderBorderTileLine *pCommand) {}
+	virtual void Cmd_RenderQuadLayer(const CCommandBuffer::SCommand_RenderQuadLayer *pCommand) {}
+	virtual void Cmd_RenderText(const CCommandBuffer::SCommand_RenderText *pCommand) {}
+	virtual void Cmd_RenderTextStream(const CCommandBuffer::SCommand_RenderTextStream *pCommand) {}
+	virtual void Cmd_RenderQuadContainer(const CCommandBuffer::SCommand_RenderQuadContainer *pCommand) {}
+	virtual void Cmd_RenderQuadContainerAsSprite(const CCommandBuffer::SCommand_RenderQuadContainerAsSprite *pCommand) {}
+	virtual void Cmd_RenderQuadContainerAsSpriteMultiple(const CCommandBuffer::SCommand_RenderQuadContainerAsSpriteMultiple *pCommand) {}
+public:
+	CCommandProcessorFragment_OpenGL();
+
+	bool RunCommand(const CCommandBuffer::SCommand  *pBaseCommand);
+};
+
+class CCommandProcessorFragment_OpenGL2 : public CCommandProcessorFragment_OpenGL {	
+	struct SBufferContainer
+	{
+		SBufferContainer() {}
+		SBufferContainerInfo m_ContainerInfo;
+	};
+	std::vector<SBufferContainer> m_BufferContainers;
+
+	GL_SVertexTex3D m_aStreamVertices[1024 * 4];
+
+	struct SBufferObject
+	{
+		SBufferObject(GLuint BufferObjectID) : m_BufferObjectID(BufferObjectID)
+		{
+			m_pData = NULL;
+			m_DataSize = 0;
+		}
+		GLuint m_BufferObjectID;
+		void* m_pData;
+		size_t m_DataSize;
+	};
+
+	std::vector<SBufferObject> m_BufferObjectIndices;
+
+	void RenderBorderTileEmulation(SBufferContainer& BufferContainer, const CCommandBuffer::SState& State, const float* pColor, const char *pBuffOffset, unsigned int DrawNum, const float* pOffset, const float* pDir, int JumpIndex);
+	void RenderBorderTileLineEmulation(SBufferContainer& BufferContainer, const CCommandBuffer::SState& State, const float* pColor, const char *pBuffOffset, unsigned int IndexDrawNum, unsigned int DrawNum, const float* pOffset, const float* pDir);
+
+	void UseProgram(CGLSLTWProgram *pProgram);
+protected:
+	void SetState(const CCommandBuffer::SState &State, CGLSLTWProgram *pProgram, bool Use2DArrayTextures = false);
+
+	void Cmd_Init(const SCommand_Init *pCommand) override;
+
+	void Cmd_CreateBufferObject(const CCommandBuffer::SCommand_CreateBufferObject *pCommand) override;
+	void Cmd_RecreateBufferObject(const CCommandBuffer::SCommand_RecreateBufferObject *pCommand) override;
+	void Cmd_UpdateBufferObject(const CCommandBuffer::SCommand_UpdateBufferObject *pCommand) override;
+	void Cmd_CopyBufferObject(const CCommandBuffer::SCommand_CopyBufferObject *pCommand) override;
+	void Cmd_DeleteBufferObject(const CCommandBuffer::SCommand_DeleteBufferObject *pCommand) override;
+
+	void Cmd_CreateBufferContainer(const CCommandBuffer::SCommand_CreateBufferContainer *pCommand) override;
+	void Cmd_UpdateBufferContainer(const CCommandBuffer::SCommand_UpdateBufferContainer *pCommand) override;
+	void Cmd_DeleteBufferContainer(const CCommandBuffer::SCommand_DeleteBufferContainer *pCommand) override;
+	void Cmd_IndicesRequiredNumNotify(const CCommandBuffer::SCommand_IndicesRequiredNumNotify *pCommand) override;
+		
+	void Cmd_RenderTileLayer(const CCommandBuffer::SCommand_RenderTileLayer *pCommand) override;	
+	void Cmd_RenderBorderTile(const CCommandBuffer::SCommand_RenderBorderTile *pCommand) override;
+	void Cmd_RenderBorderTileLine(const CCommandBuffer::SCommand_RenderBorderTileLine *pCommand) override;
 
-	CGLSLPrimitiveProgram *m_pPrimitiveProgram;
 	CGLSLTileProgram *m_pTileProgram;
 	CGLSLTileProgram *m_pTileProgramTextured;
-	CGLSLBorderTileProgram *m_pBorderTileProgram;
-	CGLSLBorderTileProgram *m_pBorderTileProgramTextured;
-	CGLSLBorderTileLineProgram *m_pBorderTileLineProgram;
-	CGLSLBorderTileLineProgram *m_pBorderTileLineProgramTextured;
+	CGLSLPrimitiveProgram *m_pPrimitive3DProgram;
+	CGLSLPrimitiveProgram *m_pPrimitive3DProgramTextured;
+	
+	bool m_UseMultipleTextureUnits;
+	
+	GLint m_MaxTextureUnits;
+	
+	struct STextureBound{
+		int m_TextureSlot;
+		bool m_Is2DArray;
+	};
+	std::vector<STextureBound> m_TextureSlotBoundToUnit; //the texture index generated by loadtextureraw is stored in an index calculated by max texture units
+	
+	bool IsAndUpdateTextureSlotBound(int IDX, int Slot, bool Is2DArray = false);
+public:
+	CCommandProcessorFragment_OpenGL2() : CCommandProcessorFragment_OpenGL(), m_UseMultipleTextureUnits(false) {}
+};
+
+class CCommandProcessorFragment_OpenGL3 : public CCommandProcessorFragment_OpenGL2 {
+
+};
+
+#define MAX_STREAM_BUFFER_COUNT 30
+
+// takes care of opengl 3.3+ related rendering
+class CCommandProcessorFragment_OpenGL3_3 : public CCommandProcessorFragment_OpenGL3
+{
+	bool m_UsePreinitializedVertexBuffer;
+
+	int m_MaxQuadsAtOnce;
+	static const int m_MaxQuadsPossible = 256;
+
+	CGLSLPrimitiveProgram *m_pPrimitiveProgram;
+	CGLSLTileProgram *m_pBorderTileProgram;
+	CGLSLTileProgram *m_pBorderTileProgramTextured;
+	CGLSLTileProgram *m_pBorderTileLineProgram;
+	CGLSLTileProgram *m_pBorderTileLineProgramTextured;
 	CGLSLQuadProgram *m_pQuadProgram;
 	CGLSLQuadProgram *m_pQuadProgramTextured;
 	CGLSLTextProgram *m_pTextProgram;
@@ -180,19 +309,7 @@ class CCommandProcessorFragment_OpenGL3_3
 	
 	GLuint m_QuadDrawIndexBufferID;
 	unsigned int m_CurrentIndicesInBuffer;
-	
-	GLint m_MaxTextureUnits;
-	GLint m_MaxTexSize;
-	
-	int m_LastBlendMode; //avoid all possible opengl state changes
-	bool m_LastClipEnable;
-	
-	struct STextureBound{
-		int m_TextureSlot;
-	};
-	std::vector<STextureBound> m_TextureSlotBoundToUnit; //the texture index generated by loadtextureraw is stored in an index calculated by max texture units
-	
-	bool IsAndUpdateTextureSlotBound(int IDX, int Slot);
+
 	void DestroyTexture(int Slot);
 	void DestroyBufferContainer(int Index, bool DeleteBOs = true);
 	
@@ -210,68 +327,45 @@ class CCommandProcessorFragment_OpenGL3_3
 	std::vector<GLuint> m_BufferObjectIndices;
 	
 	CCommandBuffer::SColorf m_ClearColor;
-public:
-	enum
-	{
-		CMD_INIT = CCommandBuffer::CMDGROUP_PLATFORM_OPENGL3_3,
-		CMD_SHUTDOWN,
-	};
+protected:
+	static int TexFormatToNewOpenGLFormat(int TexFormat);
+	bool IsNewApi() override { return true; }
 
-	struct SCommand_Init : public CCommandBuffer::SCommand
-	{
-		SCommand_Init() : SCommand(CMD_INIT) {}
-		class IStorage *m_pStorage;
-		volatile int *m_pTextureMemoryUsage;
-	};
-
-	struct SCommand_Shutdown : public CCommandBuffer::SCommand
-	{
-		SCommand_Shutdown() : SCommand(CMD_SHUTDOWN) {}
-	};
-
-private:
-	static int TexFormatToOpenGLFormat(int TexFormat);
-	static unsigned char Sample(int w, int h, const unsigned char *pData, int u, int v, int Offset, int ScaleW, int ScaleH, int Bpp);
-	static void *Rescale(int Width, int Height, int NewWidth, int NewHeight, int Format, const unsigned char *pData);
-	
-	void SetState(const CCommandBuffer::SState &State, CGLSLTWProgram *pProgram);
 	void UseProgram(CGLSLTWProgram *pProgram);
 	void UploadStreamBufferData(unsigned int PrimitiveType, const void* pVertices, unsigned int PrimitiveCount);
 	void RenderText(const CCommandBuffer::SState& State, int DrawNum, int TextTextureIndex, int TextOutlineTextureIndex, int TextureSize, const float* pTextColor, const float* pTextOutlineColor);
 
-	void Cmd_Init(const SCommand_Init *pCommand);
-	void Cmd_Shutdown(const SCommand_Shutdown *pCommand);
-	void Cmd_Texture_Update(const CCommandBuffer::SCommand_Texture_Update *pCommand);
-	void Cmd_Texture_Destroy(const CCommandBuffer::SCommand_Texture_Destroy *pCommand);
-	void Cmd_Texture_Create(const CCommandBuffer::SCommand_Texture_Create *pCommand);
-	void Cmd_Clear(const CCommandBuffer::SCommand_Clear *pCommand);
-	void Cmd_Render(const CCommandBuffer::SCommand_Render *pCommand);
-	void Cmd_Screenshot(const CCommandBuffer::SCommand_Screenshot *pCommand);
+	void Cmd_Init(const SCommand_Init *pCommand) override;
+	void Cmd_Shutdown(const SCommand_Shutdown *pCommand) override;
+	void Cmd_Texture_Update(const CCommandBuffer::SCommand_Texture_Update *pCommand) override;
+	void Cmd_Texture_Destroy(const CCommandBuffer::SCommand_Texture_Destroy *pCommand) override;
+	void Cmd_Texture_Create(const CCommandBuffer::SCommand_Texture_Create *pCommand) override;
+	void Cmd_Clear(const CCommandBuffer::SCommand_Clear *pCommand) override;
+	void Cmd_Render(const CCommandBuffer::SCommand_Render *pCommand) override;
+	void Cmd_Screenshot(const CCommandBuffer::SCommand_Screenshot *pCommand) override;
 
-	void Cmd_CreateBufferObject(const CCommandBuffer::SCommand_CreateBufferObject *pCommand);
-	void Cmd_RecreateBufferObject(const CCommandBuffer::SCommand_RecreateBufferObject *pCommand);
-	void Cmd_UpdateBufferObject(const CCommandBuffer::SCommand_UpdateBufferObject *pCommand);
-	void Cmd_CopyBufferObject(const CCommandBuffer::SCommand_CopyBufferObject *pCommand);
-	void Cmd_DeleteBufferObject(const CCommandBuffer::SCommand_DeleteBufferObject *pCommand);
+	void Cmd_CreateBufferObject(const CCommandBuffer::SCommand_CreateBufferObject *pCommand) override;
+	void Cmd_RecreateBufferObject(const CCommandBuffer::SCommand_RecreateBufferObject *pCommand) override;
+	void Cmd_UpdateBufferObject(const CCommandBuffer::SCommand_UpdateBufferObject *pCommand) override;
+	void Cmd_CopyBufferObject(const CCommandBuffer::SCommand_CopyBufferObject *pCommand) override;
+	void Cmd_DeleteBufferObject(const CCommandBuffer::SCommand_DeleteBufferObject *pCommand) override;
 
-	void Cmd_CreateBufferContainer(const CCommandBuffer::SCommand_CreateBufferContainer *pCommand);
-	void Cmd_UpdateBufferContainer(const CCommandBuffer::SCommand_UpdateBufferContainer *pCommand);
-	void Cmd_DeleteBufferContainer(const CCommandBuffer::SCommand_DeleteBufferContainer *pCommand);
-	void Cmd_IndicesRequiredNumNotify(const CCommandBuffer::SCommand_IndicesRequiredNumNotify *pCommand);
+	void Cmd_CreateBufferContainer(const CCommandBuffer::SCommand_CreateBufferContainer *pCommand) override;
+	void Cmd_UpdateBufferContainer(const CCommandBuffer::SCommand_UpdateBufferContainer *pCommand) override;
+	void Cmd_DeleteBufferContainer(const CCommandBuffer::SCommand_DeleteBufferContainer *pCommand) override;
+	void Cmd_IndicesRequiredNumNotify(const CCommandBuffer::SCommand_IndicesRequiredNumNotify *pCommand) override;
 		
-	void Cmd_RenderTileLayer(const CCommandBuffer::SCommand_RenderTileLayer *pCommand);	
-	void Cmd_RenderBorderTile(const CCommandBuffer::SCommand_RenderBorderTile *pCommand);
-	void Cmd_RenderBorderTileLine(const CCommandBuffer::SCommand_RenderBorderTileLine *pCommand);
-	void Cmd_RenderQuadLayer(const CCommandBuffer::SCommand_RenderQuadLayer *pCommand);
-	void Cmd_RenderText(const CCommandBuffer::SCommand_RenderText *pCommand);
-	void Cmd_RenderTextStream(const CCommandBuffer::SCommand_RenderTextStream *pCommand);
-	void Cmd_RenderQuadContainer(const CCommandBuffer::SCommand_RenderQuadContainer *pCommand);
-	void Cmd_RenderQuadContainerAsSprite(const CCommandBuffer::SCommand_RenderQuadContainerAsSprite *pCommand);
-	void Cmd_RenderQuadContainerAsSpriteMultiple(const CCommandBuffer::SCommand_RenderQuadContainerAsSpriteMultiple *pCommand);
+	void Cmd_RenderTileLayer(const CCommandBuffer::SCommand_RenderTileLayer *pCommand) override;	
+	void Cmd_RenderBorderTile(const CCommandBuffer::SCommand_RenderBorderTile *pCommand) override;
+	void Cmd_RenderBorderTileLine(const CCommandBuffer::SCommand_RenderBorderTileLine *pCommand) override;
+	void Cmd_RenderQuadLayer(const CCommandBuffer::SCommand_RenderQuadLayer *pCommand) override;
+	void Cmd_RenderText(const CCommandBuffer::SCommand_RenderText *pCommand) override;
+	void Cmd_RenderTextStream(const CCommandBuffer::SCommand_RenderTextStream *pCommand) override;
+	void Cmd_RenderQuadContainer(const CCommandBuffer::SCommand_RenderQuadContainer *pCommand) override;
+	void Cmd_RenderQuadContainerAsSprite(const CCommandBuffer::SCommand_RenderQuadContainerAsSprite *pCommand) override;
+	void Cmd_RenderQuadContainerAsSpriteMultiple(const CCommandBuffer::SCommand_RenderQuadContainerAsSpriteMultiple *pCommand) override;
 public:
-	CCommandProcessorFragment_OpenGL3_3();
-
-	bool RunCommand(const CCommandBuffer::SCommand  *pBaseCommand);
+	CCommandProcessorFragment_OpenGL3_3() = default;
 };
 
 // takes care of sdl related commands
@@ -293,6 +387,17 @@ public:
 		SCommand_Init() : SCommand(CMD_INIT) {}
 		SDL_Window *m_pWindow;
 		SDL_GLContext m_GLContext;
+		SBackendCapabilites* m_pCapabilities;
+
+		int* m_pInitError;
+
+		int m_RequestedMajor;
+		int m_RequestedMinor;
+		int m_RequestedPatch;
+
+		int m_GlewMajor;
+		int m_GlewMinor;
+		int m_GlewPatch;
 	};
 
 	struct SCommand_Update_Viewport : public CCommandBuffer::SCommand
@@ -326,14 +431,11 @@ public:
 // command processor impelementation, uses the fragments to combine into one processor
 class CCommandProcessor_SDL_OpenGL : public CGraphicsBackend_Threaded::ICommandProcessor
 {
-	CCommandProcessorFragment_OpenGL m_OpenGL;
-	CCommandProcessorFragment_OpenGL3_3 m_OpenGL3_3;
+	CCommandProcessorFragment_OpenGL *m_pOpenGL;
 	CCommandProcessorFragment_SDL m_SDL;
 	CCommandProcessorFragment_General m_General;
-	
-	bool m_UseOpenGL3_3;
 public:
-	void UseOpenGL3_3(bool Use) { m_UseOpenGL3_3 = Use; }
+	CCommandProcessor_SDL_OpenGL(int OpenGLMajor, int OpenGLMinor, int OpenGLPatch);
 	virtual void RunBuffer(CCommandBuffer *pBuffer);
 };
 
@@ -343,10 +445,12 @@ class CGraphicsBackend_SDL_OpenGL : public CGraphicsBackend_Threaded
 	SDL_Window *m_pWindow;
 	SDL_GLContext m_GLContext;
 	ICommandProcessor *m_pProcessor;
-	volatile int m_TextureMemoryUsage;
+	std::atomic<int> m_TextureMemoryUsage;
 	int m_NumScreens;
+
+	SBackendCapabilites m_Capabilites;
 	
-	bool m_UseOpenGL3_3;
+	bool m_UseNewOpenGL;
 public:
 	virtual int Init(const char *pName, int *Screen, int *pWidth, int *pHeight, int FsaaSamples, int Flags, int *pDesktopWidth, int *pDesktopHeight, int *pCurrentWidth, int *pCurrentHeight, class IStorage *pStorage);
 	virtual int Shutdown();
@@ -366,7 +470,12 @@ public:
 	virtual void SetWindowGrab(bool Grab);
 	virtual void NotifyWindow();
 	
-	virtual bool IsOpenGL3_3() { return m_UseOpenGL3_3; }
+	virtual bool IsNewOpenGL() { return m_UseNewOpenGL; }
+	virtual bool HasTileBuffering() { return m_Capabilites.m_TileBuffering; }
+	virtual bool HasQuadBuffering() { return m_Capabilites.m_QuadBuffering; }
+	virtual bool HasTextBuffering() { return m_Capabilites.m_TextBuffering; }
+	virtual bool HasQuadContainerBuffering() { return m_Capabilites.m_QuadContainerBuffering; }
+	virtual bool Has2DTextureArrays() { return m_Capabilites.m_2DArrayTextures; }
 };
 
 #endif // ENGINE_CLIENT_BACKEND_SDL_H

src/engine/client/graphics_threaded.cpp

@@ -68,7 +68,7 @@ void CGraphics_Threaded::FlushVertices(bool KeepVertices)
 
 	if(m_Drawing == DRAWING_QUADS)
 	{
-		if(g_Config.m_GfxQuadAsTriangle && !m_UseOpenGL3_3)
+		if(g_Config.m_GfxQuadAsTriangle && !m_IsNewOpenGL)
 		{
 			Cmd.m_PrimType = CCommandBuffer::PRIMTYPE_TRIANGLES;
 			Cmd.m_PrimCount = NumVerts/3;
@@ -437,6 +437,16 @@ IGraphics::CTextureHandle CGraphics_Threaded::LoadTextureRaw(int Width, int Heig
 		Cmd.m_Flags |= CCommandBuffer::TEXFLAG_COMPRESSED;
 	if(g_Config.m_GfxTextureQuality || Flags&TEXLOAD_NORESAMPLE)
 		Cmd.m_Flags |= CCommandBuffer::TEXFLAG_QUALITY;
+	if((Flags&IGraphics::TEXLOAD_TO_2D_ARRAY_TEXTURE) != 0)
+		Cmd.m_Flags |= CCommandBuffer::TEXFLAG_TO_2D_ARRAY_TEXTURE;
+	if((Flags&IGraphics::TEXLOAD_TO_3D_TEXTURE) != 0)
+		Cmd.m_Flags |= CCommandBuffer::TEXFLAG_TO_3D_TEXTURE;
+	if((Flags&IGraphics::TEXLOAD_TO_2D_ARRAY_TEXTURE_SINGLE_LAYER) != 0)
+		Cmd.m_Flags |= CCommandBuffer::TEXFLAG_TO_2D_ARRAY_TEXTURE_SINGLE_LAYER;
+	if((Flags&IGraphics::TEXLOAD_TO_3D_TEXTURE_SINGLE_LAYER) != 0)
+		Cmd.m_Flags |= CCommandBuffer::TEXFLAG_TO_3D_TEXTURE_SINGLE_LAYER;
+	if((Flags&IGraphics::TEXLOAD_NO_2D_TEXTURE) != 0)
+		Cmd.m_Flags |= CCommandBuffer::TEXFLAG_NO_2D_TEXTURE;
 
 	// copy texture data
 	int MemSize = Width*Height*Cmd.m_PixelSize;
@@ -705,7 +715,7 @@ void CGraphics_Threaded::ChangeColorOfCurrentQuadVertices(float r, float g, floa
 
 void CGraphics_Threaded::ChangeColorOfQuadVertices(int QuadOffset, unsigned char r, unsigned char g, unsigned char b, unsigned char a)
 {
-	if(g_Config.m_GfxQuadAsTriangle && !m_UseOpenGL3_3)
+	if(g_Config.m_GfxQuadAsTriangle && !m_IsNewOpenGL)
 	{
 		m_aVertices[QuadOffset * 6].m_Color.r = r;
 		m_aVertices[QuadOffset * 6].m_Color.g = g;
@@ -806,7 +816,7 @@ void CGraphics_Threaded::QuadsDrawTL(const CQuadItem *pArray, int Num)
 
 	dbg_assert(m_Drawing == DRAWING_QUADS, "called Graphics()->QuadsDrawTL without begin");
 
-	if(g_Config.m_GfxQuadAsTriangle && !m_UseOpenGL3_3)
+	if(g_Config.m_GfxQuadAsTriangle && !m_IsNewOpenGL)
 	{
 		for(int i = 0; i < Num; ++i)
 		{
@@ -894,7 +904,7 @@ void CGraphics_Threaded::QuadsDrawFreeform(const CFreeformItem *pArray, int Num)
 {
 	dbg_assert(m_Drawing == DRAWING_QUADS, "called Graphics()->QuadsDrawFreeform without begin");
 
-	if(g_Config.m_GfxQuadAsTriangle && !m_UseOpenGL3_3)
+	if(g_Config.m_GfxQuadAsTriangle && !m_IsNewOpenGL)
 	{
 		for(int i = 0; i < Num; ++i)
 		{
@@ -1000,15 +1010,6 @@ void CGraphics_Threaded::RenderTileLayer(int BufferContainerIndex, float *pColor
 	Cmd.m_IndicesDrawNum = NumIndicesOffet;
 	Cmd.m_BufferContainerIndex = BufferContainerIndex;
 	mem_copy(&Cmd.m_Color, pColor, sizeof(Cmd.m_Color));
-	float ScreenZoomRatio = ScreenWidth() / (m_State.m_ScreenBR.x - m_State.m_ScreenTL.x);
-	//the number of pixels we would skip in the fragment shader -- basically the LOD
-	float LODFactor = (64.f / (32.f * ScreenZoomRatio));
-	//log2 gives us the amount of halving the texture for mipmapping
-	int LOD = (int)log2f(LODFactor);
-	//5 because log2(1024/(2^5)) is 5 -- 2^5 = 32 which would mean 2 pixels per tile index
-	if(LOD > 5) LOD = 5;
-	if(LOD < 0) LOD = 0;
-	Cmd.m_LOD = LOD;
 
 	void *Data = m_pCommandBuffer->AllocData((sizeof(char*) + sizeof(unsigned int))*NumIndicesOffet);
 	if(Data == 0x0)
@@ -1065,16 +1066,6 @@ void CGraphics_Threaded::RenderBorderTiles(int BufferContainerIndex, float *pCol
 	Cmd.m_DrawNum = DrawNum;
 	Cmd.m_BufferContainerIndex = BufferContainerIndex;
 	mem_copy(&Cmd.m_Color, pColor, sizeof(Cmd.m_Color));
-	float ScreenZoomRatio = ScreenWidth() / (m_State.m_ScreenBR.x - m_State.m_ScreenTL.x);
-	//the number of pixels we would skip in the fragment shader -- basically the LOD
-	float LODFactor = (64.f / (32.f * ScreenZoomRatio));
-	//log2 gives us the amount of halving the texture for mipmapping
-	int LOD = (int)log2f(LODFactor);
-	if(LOD > 5)
-		LOD = 5;
-	if(LOD < 0)
-		LOD = 0;
-	Cmd.m_LOD = LOD;
 
 	Cmd.m_pIndicesOffset = pIndexBufferOffset;
 	Cmd.m_JumpIndex = JumpIndex;
@@ -1109,16 +1100,6 @@ void CGraphics_Threaded::RenderBorderTileLines(int BufferContainerIndex, float *
 	Cmd.m_DrawNum = RedrawNum;
 	Cmd.m_BufferContainerIndex = BufferContainerIndex;
 	mem_copy(&Cmd.m_Color, pColor, sizeof(Cmd.m_Color));
-	float ScreenZoomRatio = ScreenWidth() / (m_State.m_ScreenBR.x - m_State.m_ScreenTL.x);
-	//the number of pixels we would skip in the fragment shader -- basically the LOD
-	float LODFactor = (64.f / (32.f * ScreenZoomRatio));
-	//log2 gives us the amount of halving the texture for mipmapping
-	int LOD = (int)log2f(LODFactor);
-	if(LOD > 5)
-		LOD = 5;
-	if(LOD < 0)
-		LOD = 0;
-	Cmd.m_LOD = LOD;
 
 	Cmd.m_pIndicesOffset = pIndexBufferOffset;
 
@@ -1228,7 +1209,7 @@ int CGraphics_Threaded::CreateQuadContainer()
 
 void CGraphics_Threaded::QuadContainerUpload(int ContainerIndex)
 {
-	if(m_UseOpenGL3_3)
+	if(IsQuadContainerBufferingEnabled())
 	{
 		SQuadContainer& Container = m_QuadContainers[ContainerIndex];
 		if(Container.m_Quads.size() > 0)
@@ -1364,7 +1345,7 @@ void CGraphics_Threaded::QuadContainerAddQuads(int ContainerIndex, CFreeformItem
 void CGraphics_Threaded::QuadContainerReset(int ContainerIndex)
 {
 	SQuadContainer& Container = m_QuadContainers[ContainerIndex];
-	if(m_UseOpenGL3_3)
+	if(IsQuadContainerBufferingEnabled())
 	{
 		if(Container.m_QuadBufferContainerIndex != -1)
 			DeleteBufferContainer(Container.m_QuadBufferContainerIndex, true);
@@ -1397,7 +1378,7 @@ void CGraphics_Threaded::RenderQuadContainer(int ContainerIndex, int QuadOffset,
 	if((int)Container.m_Quads.size() < QuadOffset + QuadDrawNum || QuadDrawNum == 0)
 		return;
 
-	if(m_UseOpenGL3_3)
+	if(IsQuadContainerBufferingEnabled())
 	{
 		if(Container.m_QuadBufferContainerIndex == -1)
 			return;
@@ -1455,7 +1436,7 @@ void CGraphics_Threaded::RenderQuadContainerAsSprite(int ContainerIndex, int Qua
 	if((int)Container.m_Quads.size() < QuadOffset + 1)
 		return;
 
-	if(m_UseOpenGL3_3)
+	if(IsQuadContainerBufferingEnabled())
 	{
 		if(Container.m_QuadBufferContainerIndex == -1)
 			return;
@@ -1581,7 +1562,7 @@ void CGraphics_Threaded::RenderQuadContainerAsSpriteMultiple(int ContainerIndex,
 	if(DrawCount == 0)
 		return;
 
-	if(m_UseOpenGL3_3)
+	if(IsQuadContainerBufferingEnabled())
 	{
 		if(Container.m_QuadBufferContainerIndex == -1)
 			return;
@@ -2057,13 +2038,19 @@ int CGraphics_Threaded::IssueInit()
 	if(g_Config.m_GfxResizable) Flags |= IGraphicsBackend::INITFLAG_RESIZABLE;
 
 	int r = m_pBackend->Init("DDNet Client", &g_Config.m_GfxScreen, &g_Config.m_GfxScreenWidth, &g_Config.m_GfxScreenHeight, g_Config.m_GfxFsaaSamples, Flags, &m_DesktopScreenWidth, &m_DesktopScreenHeight, &m_ScreenWidth, &m_ScreenHeight, m_pStorage);
-	m_UseOpenGL3_3 = m_pBackend->IsOpenGL3_3();
+	m_IsNewOpenGL = m_pBackend->IsNewOpenGL();
+	m_OpenGLTileBufferingEnabled = m_IsNewOpenGL || m_pBackend->HasTileBuffering();
+	m_OpenGLQuadBufferingEnabled = m_IsNewOpenGL || m_pBackend->HasQuadBuffering();
+	m_OpenGLQuadContainerBufferingEnabled = m_IsNewOpenGL || m_pBackend->HasQuadContainerBuffering();
+	m_OpenGLTextBufferingEnabled = m_IsNewOpenGL || (m_OpenGLQuadContainerBufferingEnabled && m_pBackend->HasTextBuffering());
+	m_OpenGLHasTextureArrays = m_IsNewOpenGL || m_pBackend->Has2DTextureArrays();
 	return r;
 }
 
 int CGraphics_Threaded::InitWindow()
 {
-	if(IssueInit() == 0)
+	int ErrorCode = IssueInit();
+	if(ErrorCode == 0)
 		return 0;
 
 	// try disabling fsaa
@@ -2076,18 +2063,85 @@ int CGraphics_Threaded::InitWindow()
 		else
 			dbg_msg("gfx", "disabling FSAA and trying again");
 
-		if(IssueInit() == 0)
+		ErrorCode = IssueInit();
+		if(ErrorCode == 0)
 			return 0;
 	}
 
-	// try using old opengl context
-	if(g_Config.m_GfxOpenGL3)
+	size_t OpenGLInitTryCount = 0;
+	while(ErrorCode == EGraphicsBackendErrorCodes::GRAPHICS_BACKEND_ERROR_CODE_OPENGL_CONTEXT_FAILED || ErrorCode == EGraphicsBackendErrorCodes::GRAPHICS_BACKEND_ERROR_CODE_OPENGL_VERSION_FAILED)
 	{
-		g_Config.m_GfxOpenGL3 = 0;
-		if(IssueInit() == 0)
+		if(ErrorCode == EGraphicsBackendErrorCodes::GRAPHICS_BACKEND_ERROR_CODE_OPENGL_CONTEXT_FAILED)
+		{
+			// try next smaller major/minor or patch version
+			if(g_Config.m_GfxOpenGLMajor >= 4)
+			{
+				g_Config.m_GfxOpenGLMajor = 3;
+				g_Config.m_GfxOpenGLMinor = 3;
+				g_Config.m_GfxOpenGLPatch = 0;
+			}
+			else if(g_Config.m_GfxOpenGLMajor == 3 && g_Config.m_GfxOpenGLMinor >= 1)
+			{
+				g_Config.m_GfxOpenGLMajor = 3;
+				g_Config.m_GfxOpenGLMinor = 0;
+				g_Config.m_GfxOpenGLPatch = 0;
+			}
+			else if(g_Config.m_GfxOpenGLMajor == 3 && g_Config.m_GfxOpenGLMinor == 0)
+			{
+				g_Config.m_GfxOpenGLMajor = 2;
+				g_Config.m_GfxOpenGLMinor = 1;
+				g_Config.m_GfxOpenGLPatch = 0;
+			}
+			else if(g_Config.m_GfxOpenGLMajor == 2 && g_Config.m_GfxOpenGLMinor >= 1)
+			{
+				g_Config.m_GfxOpenGLMajor = 2;
+				g_Config.m_GfxOpenGLMinor = 0;
+				g_Config.m_GfxOpenGLPatch = 0;
+			}
+			else if(g_Config.m_GfxOpenGLMajor == 2 && g_Config.m_GfxOpenGLMinor == 0)
+			{
+				g_Config.m_GfxOpenGLMajor = 1;
+				g_Config.m_GfxOpenGLMinor = 5;
+				g_Config.m_GfxOpenGLPatch = 0;
+			}
+			else if(g_Config.m_GfxOpenGLMajor == 1 && g_Config.m_GfxOpenGLMinor == 5)
+			{
+				g_Config.m_GfxOpenGLMajor = 1;
+				g_Config.m_GfxOpenGLMinor = 4;
+				g_Config.m_GfxOpenGLPatch = 0;
+			}
+			else if(g_Config.m_GfxOpenGLMajor == 1 && g_Config.m_GfxOpenGLMinor == 4)
+			{
+				g_Config.m_GfxOpenGLMajor = 1;
+				g_Config.m_GfxOpenGLMinor = 3;
+				g_Config.m_GfxOpenGLPatch = 0;
+			}
+			else if(g_Config.m_GfxOpenGLMajor == 1 && g_Config.m_GfxOpenGLMinor == 3)
+			{
+				g_Config.m_GfxOpenGLMajor = 1;
+				g_Config.m_GfxOpenGLMinor = 2;
+				g_Config.m_GfxOpenGLPatch = 1;
+			}
+			else if(g_Config.m_GfxOpenGLMajor == 1 && g_Config.m_GfxOpenGLMinor == 2)
+			{
+				g_Config.m_GfxOpenGLMajor = 1;
+				g_Config.m_GfxOpenGLMinor = 1;
+				g_Config.m_GfxOpenGLPatch = 0;
+			}
+		}
+
+		// new opengl version was set by backend, try again
+		ErrorCode = IssueInit();
+		if(ErrorCode == 0)
 		{
 			return 0;
 		}
+
+		if(++OpenGLInitTryCount >= 9)
+		{
+			// try something else
+			break;
+		}
 	}
 
 	// try lowering the resolution

src/engine/client/graphics_threaded.h

@@ -66,7 +66,6 @@ public:
 		CMDGROUP_CORE = 0, // commands that everyone has to implement
 		CMDGROUP_PLATFORM_OPENGL = 10000, // commands specific to a platform
 		CMDGROUP_PLATFORM_SDL = 20000,
-		CMDGROUP_PLATFORM_OPENGL3_3 = 30000,
 
 		//
 		CMD_NOP = CMDGROUP_CORE,
@@ -86,7 +85,7 @@ public:
 		CMD_CLEAR,
 		CMD_RENDER,
 
-		//opengl 3.3 commands
+		//opengl 2.0+ commands (some are just emulated and only exist in opengl 3.3+)
 		CMD_CREATE_BUFFER_OBJECT, // create vbo
 		CMD_RECREATE_BUFFER_OBJECT, // recreate vbo
 		CMD_UPDATE_BUFFER_OBJECT, // update vbo
@@ -130,6 +129,11 @@ public:
 		TEXFLAG_NOMIPMAPS = 1,
 		TEXFLAG_COMPRESSED = 2,
 		TEXFLAG_QUALITY = 4,
+		TEXFLAG_TO_3D_TEXTURE = (1 << 3),
+		TEXFLAG_TO_2D_ARRAY_TEXTURE = (1 << 4),
+		TEXFLAG_TO_3D_TEXTURE_SINGLE_LAYER = (1 << 5),
+		TEXFLAG_TO_2D_ARRAY_TEXTURE_SINGLE_LAYER = (1 << 6),
+		TEXFLAG_NO_2D_TEXTURE = (1 << 7),
 	};
 
 	enum
@@ -313,7 +317,6 @@ public:
 
 		int m_IndicesDrawNum;
 		int m_BufferContainerIndex;
-		int m_LOD;
 	};
 
 	struct SCommand_RenderBorderTile : public SCommand
@@ -324,7 +327,6 @@ public:
 		char *m_pIndicesOffset; // you should use the command buffer data to allocate vertices for this command
 		unsigned int m_DrawNum;
 		int m_BufferContainerIndex;
-		int m_LOD;
 
 		float m_Offset[2];
 		float m_Dir[2];
@@ -340,7 +342,6 @@ public:
 		unsigned int m_IndexDrawNum;
 		unsigned int m_DrawNum;
 		int m_BufferContainerIndex;
-		int m_LOD;
 
 		float m_Offset[2];
 		float m_Dir[2];
@@ -554,6 +555,19 @@ public:
 	}
 };
 
+enum EGraphicsBackendErrorCodes
+{
+	GRAPHICS_BACKEND_ERROR_CODE_UNKNOWN = -1,
+	GRAPHICS_BACKEND_ERROR_CODE_NONE = 0,
+	GRAPHICS_BACKEND_ERROR_CODE_OPENGL_CONTEXT_FAILED,
+	GRAPHICS_BACKEND_ERROR_CODE_OPENGL_VERSION_FAILED,
+	GRAPHICS_BACKEND_ERROR_CODE_SDL_INIT_FAILED,
+	GRAPHICS_BACKEND_ERROR_CODE_SDL_SCREEN_REQUEST_FAILED,
+	GRAPHICS_BACKEND_ERROR_CODE_SDL_SCREEN_INFO_REQUEST_FAILED,
+	GRAPHICS_BACKEND_ERROR_CODE_SDL_SCREEN_RESOLUTION_REQUEST_FAILED,
+	GRAPHICS_BACKEND_ERROR_CODE_SDL_WINDOW_CREATE_FAILED,
+};
+
 // interface for the graphics backend
 // all these functions are called on the main thread
 class IGraphicsBackend
@@ -592,7 +606,12 @@ public:
 	virtual bool IsIdle() const = 0;
 	virtual void WaitForIdle() = 0;
 
-	virtual bool IsOpenGL3_3() { return false; }
+	virtual bool IsNewOpenGL() { return false; }
+	virtual bool HasTileBuffering() { return false; }
+	virtual bool HasQuadBuffering() { return false; }
+	virtual bool HasTextBuffering() { return false; }
+	virtual bool HasQuadContainerBuffering() { return false; }
+	virtual bool Has2DTextureArrays() { return false; }
 };
 
 class CGraphics_Threaded : public IEngineGraphics
@@ -610,7 +629,12 @@ class CGraphics_Threaded : public IEngineGraphics
 
 	CCommandBuffer::SState m_State;
 	IGraphicsBackend *m_pBackend;
-	bool m_UseOpenGL3_3;
+	bool m_OpenGLTileBufferingEnabled;
+	bool m_OpenGLQuadBufferingEnabled;
+	bool m_OpenGLTextBufferingEnabled;
+	bool m_OpenGLQuadContainerBufferingEnabled;
+	bool m_OpenGLHasTextureArrays;
+	bool m_IsNewOpenGL;
 
 	CCommandBuffer *m_apCommandBuffers[NUM_CMDBUFFERS];
 	CCommandBuffer *m_pCommandBuffer;
@@ -827,7 +851,11 @@ public:
 	virtual bool IsIdle();
 	virtual void WaitForIdle();
 
-	virtual bool IsBufferingEnabled() { return m_UseOpenGL3_3; }
+	virtual bool IsTileBufferingEnabled() { return m_OpenGLTileBufferingEnabled; }
+	virtual bool IsQuadBufferingEnabled() { return m_OpenGLQuadBufferingEnabled; }
+	virtual bool IsTextBufferingEnabled() { return m_OpenGLTextBufferingEnabled; }
+	virtual bool IsQuadContainerBufferingEnabled() { return m_OpenGLQuadContainerBufferingEnabled; }
+	virtual bool HasTextureArrays() { return m_OpenGLHasTextureArrays; }
 };
 
 extern IGraphicsBackend *CreateGraphicsBackend();

src/engine/client/opengl_sl.cpp

@@ -5,7 +5,7 @@
 #include <stdio.h>
 #include <string>
 
-bool CGLSL::LoadShader(IStorage *pStorage, const char *pFile, int Type)
+bool CGLSL::LoadShader(CGLSLCompiler* pCompiler, IStorage *pStorage, const char *pFile, int Type)
 {
 	if (m_IsLoaded)
 		return true;
@@ -14,13 +14,49 @@ bool CGLSL::LoadShader(IStorage *pStorage, const char *pFile, int Type)
 	std::vector<std::string> Lines;
 	if (f)
 	{
+		bool IsNewOpenGL = pCompiler->m_OpenGLVersionMajor >= 4 || (pCompiler->m_OpenGLVersionMajor == 3 && pCompiler->m_OpenGLVersionMinor == 3);
+		//add compiler specific values
+		if(IsNewOpenGL)
+			Lines.push_back(std::string("#version ") + std::string(std::to_string(pCompiler->m_OpenGLVersionMajor)) + std::string(std::to_string(pCompiler->m_OpenGLVersionMinor)) + std::string(std::to_string(pCompiler->m_OpenGLVersionPatch)) + std::string(" core\r\n"));
+		else
+		{
+			if(pCompiler->m_OpenGLVersionMajor == 3)
+			{
+				if(pCompiler->m_OpenGLVersionMinor == 0)
+					Lines.push_back(std::string("#version 130 \r\n"));
+				if(pCompiler->m_OpenGLVersionMinor == 1)
+					Lines.push_back(std::string("#version 140 \r\n"));
+				if(pCompiler->m_OpenGLVersionMinor == 2)
+					Lines.push_back(std::string("#version 150 \r\n"));
+			}
+			else if(pCompiler->m_OpenGLVersionMajor == 2)
+			{
+				if(pCompiler->m_OpenGLVersionMinor == 0)
+					Lines.push_back(std::string("#version 110 \r\n"));
+				if(pCompiler->m_OpenGLVersionMinor == 1)
+					Lines.push_back(std::string("#version 120 \r\n"));
+			}
+		}
+
+		for(CGLSLCompiler::SGLSLCompilerDefine& Define : pCompiler->m_Defines)
+		{
+			Lines.push_back(std::string("#define ") + Define.m_DefineName + std::string(" ") + Define.m_DefineValue + std::string("\r\n"));
+		}
+
+		if(Type == GL_FRAGMENT_SHADER && !IsNewOpenGL && pCompiler->m_OpenGLVersionMajor <= 3 && pCompiler->m_HasTextureArray)
+		{
+			Lines.push_back(std::string("#extension GL_EXT_texture_array : enable\r\n"));
+		}
+
 		CLineReader LineReader;
 		LineReader.Init(f);
 		char* ReadLine = NULL;
 		while ((ReadLine = LineReader.Get()))
 		{
-			Lines.push_back(ReadLine);
-			Lines.back().append("\r\n");
+			std::string Line;
+			pCompiler->ParseLine(Line, ReadLine, Type);
+			Line.append("\r\n");
+			Lines.push_back(Line);
 		}
 		io_close(f);
 
@@ -50,7 +86,7 @@ bool CGLSL::LoadShader(IStorage *pStorage, const char *pFile, int Type)
 
 			glGetShaderInfoLog(shader, maxLength, &maxLength, buff);
 
-			dbg_msg("GLSL", "%s", buff);
+			dbg_msg("GLSL", "%s: %s", pFile, buff);
 			glDeleteShader(shader);
 			return false;
 		}
@@ -91,3 +127,152 @@ CGLSL::~CGLSL()
 {
 	DeleteShader();
 }
+
+CGLSLCompiler::CGLSLCompiler(int OpenGLVersionMajor, int OpenGLVersionMinor, int OpenGLVersionPatch)
+{
+	m_OpenGLVersionMajor = OpenGLVersionMajor;
+	m_OpenGLVersionMinor = OpenGLVersionMinor;
+	m_OpenGLVersionPatch = OpenGLVersionPatch;
+
+	m_HasTextureArray = false;
+	m_TextureReplaceType = 0;
+}
+
+void CGLSLCompiler::AddDefine(const std::string& DefineName, const std::string& DefineValue)
+{
+	m_Defines.emplace_back(SGLSLCompilerDefine(DefineName, DefineValue));
+}
+
+void CGLSLCompiler::AddDefine(const char* pDefineName, const char* pDefineValue)
+{
+	AddDefine(std::string(pDefineName), std::string(pDefineValue));
+}
+
+void CGLSLCompiler::ClearDefines()
+{
+	m_Defines.clear();
+}
+
+void CGLSLCompiler::ParseLine(std::string& Line, const char* pReadLine, int Type)
+{
+	bool IsNewOpenGL = m_OpenGLVersionMajor >= 4 || (m_OpenGLVersionMajor == 3 && m_OpenGLVersionMinor == 3);
+	if(!IsNewOpenGL)
+	{
+		const char* pBuff = pReadLine;
+		char aTmpStr[1024];
+		size_t TmpStrSize = 0;
+		while(*pBuff)
+		{
+			while(*pBuff && str_isspace(*pBuff))
+			{
+				Line.append(1, *pBuff);
+				++pBuff;
+			}
+			
+			while(*pBuff && !str_isspace(*pBuff) && *pBuff != '(' && *pBuff != '.')
+			{
+				aTmpStr[TmpStrSize++] = *pBuff;
+				++pBuff;
+			}
+			
+			if(TmpStrSize > 0)
+			{
+				aTmpStr[TmpStrSize] = 0;
+				TmpStrSize = 0;
+				if(str_comp(aTmpStr, "layout") == 0)
+				{
+					//search for ' in'
+					while(*pBuff && (*pBuff != ' ' || (*(pBuff + 1) && *(pBuff + 1) != 'i') || *(pBuff + 2) != 'n'))
+					{
+						++pBuff;
+					}
+
+					if(*pBuff && *pBuff == ' ' && *(pBuff + 1) && *(pBuff + 1) == 'i' && *(pBuff + 2) == 'n')
+					{
+						pBuff += 3;
+						Line.append("attribute");
+						Line.append(pBuff);
+						return;
+					}
+					else
+					{
+						dbg_msg("Shader compiler", "Fix shader for older OpenGL versions.");
+					}
+				}
+				else if(str_comp(aTmpStr, "noperspective") == 0 || str_comp(aTmpStr, "smooth") == 0 || str_comp(aTmpStr, "flat") == 0)
+				{
+					//search for 'in' or 'out'
+					while(*pBuff && ((*pBuff != 'i' || *(pBuff + 1) != 'n') && (*pBuff != 'o' || (*(pBuff + 1) && *(pBuff + 1) != 'u') || *(pBuff + 2) != 't')))
+					{
+						++pBuff;
+					}
+
+					bool Found = false;
+					if(*pBuff)
+					{
+						if(*pBuff == 'i' && *(pBuff + 1) == 'n')
+						{
+							pBuff += 2;
+							Found = true;
+						}
+						else if(*pBuff == 'o' && *(pBuff + 1) && *(pBuff + 1) == 'u' && *(pBuff + 2) == 't')
+						{
+							pBuff += 3;
+							Found = true;
+						}
+					}
+					
+					if(!Found)
+					{
+						dbg_msg("Shader compiler", "Fix shader for older OpenGL versions.");
+					}
+
+					Line.append("varying");
+					Line.append(pBuff);
+					return;
+				}
+				else if(str_comp(aTmpStr, "out") == 0 || str_comp(aTmpStr, "in") == 0)
+				{
+					if(Type == GL_FRAGMENT_SHADER && str_comp(aTmpStr, "out") == 0)
+						return;
+					Line.append("varying");
+					Line.append(pBuff);
+					return;
+				}
+				else if(str_comp(aTmpStr, "FragClr") == 0)
+				{
+					Line.append("gl_FragColor");
+					Line.append(pBuff);
+					return;
+				}
+				else if(str_comp(aTmpStr, "texture") == 0)
+				{
+					if(m_TextureReplaceType == GLSL_COMPILER_TEXTURE_REPLACE_TYPE_2D)
+						Line.append("texture2D");
+					else if(m_TextureReplaceType == GLSL_COMPILER_TEXTURE_REPLACE_TYPE_3D)
+						Line.append("texture3D");
+					else if(m_TextureReplaceType == GLSL_COMPILER_TEXTURE_REPLACE_TYPE_2D_ARRAY)
+						Line.append("texture2DArray");
+					std::string RestLine;
+					ParseLine(RestLine, pBuff, Type);
+					Line.append(RestLine);
+					return;
+				}
+				else
+				{
+					Line.append(aTmpStr);
+				}				
+			}
+		
+			if(*pBuff)
+			{
+				Line.append(1, *pBuff);
+				++pBuff;
+			}
+		}
+	}
+	else
+	{
+		Line = pReadLine;
+	}
+}

src/engine/client/opengl_sl.h

@@ -2,10 +2,14 @@
 #define ENGINE_CLIENT_OPENGL_SL_H
 
 #include <GL/glew.h>
+#include <vector>
+#include <string>
+
+class CGLSLCompiler;
 
 class CGLSL {
 public:
-	bool LoadShader(class IStorage *pStorage, const char *pFile, int Type);
+	bool LoadShader(CGLSLCompiler* pCompiler, class IStorage *pStorage, const char *pFile, int Type);
 	void DeleteShader();
 	
 	bool IsLoaded();
@@ -19,4 +23,47 @@ private:
 	bool m_IsLoaded;
 };
 
+class CGLSLCompiler
+{
+private:
+	friend class CGLSL;
+
+	struct SGLSLCompilerDefine
+	{
+		SGLSLCompilerDefine(const std::string& DefineName, const std::string& DefineValue)
+		{
+			m_DefineName = DefineName;
+			m_DefineValue = DefineValue;
+		}
+		std::string m_DefineName;
+		std::string m_DefineValue;
+	};
+
+	std::vector<SGLSLCompilerDefine> m_Defines;
+
+	int m_OpenGLVersionMajor;
+	int m_OpenGLVersionMinor;
+	int m_OpenGLVersionPatch;
+
+	bool m_HasTextureArray;
+	int m_TextureReplaceType; // @see EGLSLCompilerTextureReplaceType
+public:
+	CGLSLCompiler(int OpenGLVersionMajor, int OpenGLVersionMinor, int OpenGLVersionPatch);
+	void SetHasTextureArray(bool TextureArray) { m_HasTextureArray = TextureArray; }
+	void SetTextureReplaceType(int TextureReplaceType) { m_TextureReplaceType = TextureReplaceType; }
+
+	void AddDefine(const std::string& DefineName, const std::string& DefineValue);
+	void AddDefine(const char* pDefineName, const char* pDefineValue);
+	void ClearDefines();
+
+	void ParseLine(std::string& Line, const char* pReadLine, int Type);
+
+	enum EGLSLCompilerTextureReplaceType
+	{
+		GLSL_COMPILER_TEXTURE_REPLACE_TYPE_2D = 0,
+		GLSL_COMPILER_TEXTURE_REPLACE_TYPE_3D,
+		GLSL_COMPILER_TEXTURE_REPLACE_TYPE_2D_ARRAY,
+	};
+};
+
 #endif // ENGINE_CLIENT_OPENGL_SL_H

src/engine/client/opengl_sl_program.cpp

@@ -77,14 +77,19 @@ void CGLSLProgram::DetachAllShaders()
 	}
 }
 
-void CGLSLProgram::SetUniformVec4(int Loc, int Count, const float* Value)
+void CGLSLProgram::SetUniformVec4(int Loc, int Count, const float *pValues)
 {
-	glUniform4fv(Loc, Count, Value);
+	glUniform4fv(Loc, Count, pValues);
 }
 
-void CGLSLProgram::SetUniformVec2(int Loc, int Count, const float* Value)
+void CGLSLProgram::SetUniformVec2(int Loc, int Count, const float *pValues)
 {
-	glUniform2fv(Loc, Count, Value);
+	glUniform2fv(Loc, Count, pValues);
+}
+
+void CGLSLProgram::SetUniform(int Loc, int Count, const float *pValues)
+{
+	glUniform1fv(Loc, Count, pValues);
 }
 
 void CGLSLProgram::SetUniform(int Loc, const int Value)

src/engine/client/opengl_sl_program.h

@@ -21,12 +21,13 @@ public:
 	void DetachAllShaders();
 	
 	//Support various types	
-	void SetUniformVec2(int Loc, int Count, const float* Value);
-	void SetUniformVec4(int Loc, int Count, const float* Value);
+	void SetUniformVec2(int Loc, int Count, const float *pValue);
+	void SetUniformVec4(int Loc, int Count, const float *pValue);
 	void SetUniform(int Loc, const int Value);
 	void SetUniform(int Loc, const unsigned int Value);
 	void SetUniform(int Loc, const bool Value);
 	void SetUniform(int Loc, const float Value);
+	void SetUniform(int Loc, int Count, const float *pValues);
 	
 	//for performance reason we do not use SetUniform with using strings... save the Locations of the variables instead
 	int GetUniformLoc(const char* Name);
@@ -41,7 +42,7 @@ protected:
 
 class CGLSLTWProgram : public CGLSLProgram {
 public:
-	CGLSLTWProgram() : m_LastTextureSampler(-1), m_LastIsTextured(-1)
+	CGLSLTWProgram() : m_LocPos(-1), m_LocIsTextured(-1), m_LocTextureSampler(-1), m_LastTextureSampler(-1), m_LastIsTextured(-1)
 	{
 		m_LastScreen[0] = m_LastScreen[1] = m_LastScreen[2] = m_LastScreen[3] = -1.f;
 	}
@@ -118,33 +119,20 @@ public:
 
 class CGLSLQuadProgram : public CGLSLTWProgram {
 public:
-	int m_LocColor;
-	int m_LocOffset;
-	int m_LocRotation;
+	int m_LocColors;
+	int m_LocOffsets;
+	int m_LocRotations;
 };
 
 class CGLSLTileProgram : public CGLSLTWProgram {
 public:
+	CGLSLTileProgram() : m_LocColor(-1), m_LocOffset(-1), m_LocDir(-1), m_LocNum(-1), m_LocJumpIndex(-1) {}
+
 	int m_LocColor;
-	int m_LocLOD;
-	int m_LocTexelOffset;
-
-	int m_LastLOD;
-};
-
-class CGLSLBorderTileProgram : public CGLSLTileProgram {
-public:
 	int m_LocOffset;
 	int m_LocDir;
 	int m_LocNum;
 	int m_LocJumpIndex;
 };
 
-class CGLSLBorderTileLineProgram : public CGLSLTileProgram {
-public:
-	int m_LocOffset;
-	int m_LocDir;
-	int m_LocNum;
-};
-
 #endif // ENGINE_CLIENT_OPENGL_SL_PROGRAM_H

src/engine/client/text.cpp

@@ -903,7 +903,7 @@ public:
 			// make sure there are no vertices
 			Graphics()->FlushVertices();
 
-			if(Graphics()->IsBufferingEnabled())
+			if(Graphics()->IsTextBufferingEnabled())
 			{
 				Graphics()->TextureClear();
 				Graphics()->TextQuadsBegin();
@@ -1009,7 +1009,7 @@ public:
 
 					if(pCursor->m_Flags&TEXTFLAG_RENDER && m_Color.a != 0.f)
 					{
-						if(Graphics()->IsBufferingEnabled())
+						if(Graphics()->IsTextBufferingEnabled())
 							Graphics()->QuadsSetSubset(pChr->m_aUVs[0], pChr->m_aUVs[3], pChr->m_aUVs[2], pChr->m_aUVs[1]);
 						else
 							Graphics()->QuadsSetSubset(pChr->m_aUVs[0] * UVScale, pChr->m_aUVs[3] * UVScale, pChr->m_aUVs[2] * UVScale, pChr->m_aUVs[1] * UVScale);
@@ -1054,7 +1054,7 @@ public:
 
 		if(pCursor->m_Flags&TEXTFLAG_RENDER)
 		{
-			if(Graphics()->IsBufferingEnabled())
+			if(Graphics()->IsTextBufferingEnabled())
 			{
 				float OutlineColor[4] = { m_OutlineColor.r, m_OutlineColor.g, m_OutlineColor.b, m_OutlineColor.a*m_Color.a };
 				Graphics()->TextQuadsEnd(pFont->m_CurTextureDimensions[0], pFont->m_aTextures[0], pFont->m_aTextures[1], OutlineColor);
@@ -1137,7 +1137,7 @@ public:
 		else
 		{
 			TextContainer.m_StringInfo.m_QuadNum = TextContainer.m_StringInfo.m_CharacterQuads.size();
-			if(Graphics()->IsBufferingEnabled())
+			if(Graphics()->IsTextBufferingEnabled())
 			{
 				size_t DataSize = TextContainer.m_StringInfo.m_CharacterQuads.size() * sizeof(STextCharQuad);
 				void *pUploadData = &TextContainer.m_StringInfo.m_CharacterQuads[0];
@@ -1392,7 +1392,7 @@ public:
 		{
 			TextContainer.m_StringInfo.m_QuadNum = TextContainer.m_StringInfo.m_CharacterQuads.size();
 			// setup the buffers
-			if(Graphics()->IsBufferingEnabled())
+			if(Graphics()->IsTextBufferingEnabled())
 			{
 				size_t DataSize = TextContainer.m_StringInfo.m_CharacterQuads.size() * sizeof(STextCharQuad);
 				void *pUploadData = &TextContainer.m_StringInfo.m_CharacterQuads[0];
@@ -1647,7 +1647,7 @@ public:
 	virtual void DeleteTextContainer(int TextContainerIndex)
 	{
 		STextContainer& TextContainer = GetTextContainer(TextContainerIndex);
-		if(Graphics()->IsBufferingEnabled())
+		if(Graphics()->IsTextBufferingEnabled())
 		{
 			if(TextContainer.m_StringInfo.m_QuadBufferContainerIndex != -1)
 				Graphics()->DeleteBufferContainer(TextContainer.m_StringInfo.m_QuadBufferContainerIndex, true);
@@ -1675,7 +1675,7 @@ public:
 				s_CursorRenderTime = time_get_microseconds();
 		}
 
-		if(Graphics()->IsBufferingEnabled())
+		if(Graphics()->IsTextBufferingEnabled())
 		{
 			Graphics()->TextureClear();
 			// render buffered text
@@ -1755,7 +1755,7 @@ public:
 		Graphics()->MapScreen(ScreenX0, ScreenY0, ScreenX1, ScreenY1);
 	}
 
-	virtual void UploadEntityLayerText(IGraphics::CTextureHandle Texture, const char *pText, int Length, float x, float y, int FontSize)
+	virtual void UploadEntityLayerText(void* pTexBuff, int ImageColorChannelCount, int TexWidth, int TexHeight, const char *pText, int Length, float x, float y, int FontSize)
 	{
 		if (FontSize < 1)
 			return;
@@ -1794,17 +1794,36 @@ public:
 				mem_zero(ms_aGlyphData, SlotSize);
 
 				if(pBitmap->pixel_mode == FT_PIXEL_MODE_GRAY) // ignore_convention
+				{
+					for(py = 0; py < (unsigned)SlotH; py++) // ignore_convention
+						for(px = 0; px < (unsigned)SlotW; px++)
+						{
+							ms_aGlyphData[(py)*SlotW + px] = pBitmap->buffer[py*pBitmap->width + px]; // ignore_convention
+						}
+				}
+
+				uint8_t* pImageBuff = (uint8_t*)pTexBuff;
+				for(int OffY = 0; OffY < SlotH; ++OffY)
+				{
+					for(int OffX = 0; OffX < SlotW; ++OffX)
 					{
-						for(py = 0; py < (unsigned)SlotH; py++) // ignore_convention
-							for(px = 0; px < (unsigned)SlotW; px++)
+						size_t ImageOffset = (y + OffY) * (TexWidth * ImageColorChannelCount) + ((x + OffX) + WidthLastChars) * ImageColorChannelCount;
+						size_t GlyphOffset = (OffY) * SlotW + OffX;
+						for(size_t i = 0; i < (size_t)ImageColorChannelCount; ++i)
+						{
+							if(i != (size_t)ImageColorChannelCount - 1)
 							{
-								ms_aGlyphData[(py)*SlotW + px] = pBitmap->buffer[py*pBitmap->width + px]; // ignore_convention
+								*(pImageBuff + ImageOffset + i) = 255;
 							}
+							else
+							{
+								*(pImageBuff + ImageOffset + i) = *(ms_aGlyphData + GlyphOffset);
+							}
+						}
 					}
+				}
 
-				Graphics()->LoadTextureRawSub(Texture, x + WidthLastChars, y, SlotW, SlotH, CImageInfo::FORMAT_ALPHA, ms_aGlyphData);
 				WidthLastChars += (SlotW + 1);
-
 			}
 			pCurrent = pTmp;
 		}

src/engine/graphics.h

@@ -40,6 +40,22 @@ struct SQuadRenderInfo
 	float m_Rotation;
 };
 
+struct SGraphicTile
+{
+	vec2 m_TopLeft;
+	vec2 m_TopRight;
+	vec2 m_BottomRight;
+	vec2 m_BottomLeft;
+};
+
+struct SGraphicTileTexureCoords
+{
+	vec3 m_TexCoordTopLeft;
+	vec3 m_TexCoordTopRight;
+	vec3 m_TexCoordBottomRight;
+	vec3 m_TexCoordBottomLeft;
+};
+
 class CImageInfo
 {
 public:
@@ -80,6 +96,7 @@ public:
 
 struct GL_SPoint { float x, y; };
 struct GL_STexCoord { float u, v; };
+struct GL_STexCoord3D { float u, v, w; };
 struct GL_SColorf { float r, g, b, a; };
 
 //use normalized color values
@@ -92,6 +109,13 @@ struct GL_SVertex
 	GL_SColor m_Color;
 };
 
+struct GL_SVertexTex3D
+{
+	GL_SPoint m_Pos;
+	GL_SColorf m_Color;
+	GL_STexCoord3D m_Tex;
+};
+
 typedef void(*WINDOW_RESIZE_FUNC)(void *pUser);
 
 class IGraphics : public IInterface
@@ -111,6 +135,11 @@ public:
 		TEXLOAD_NORESAMPLE = 1<<0,
 		TEXLOAD_NOMIPMAPS = 1<<1,
 		TEXLOAD_NO_COMPRESSION = 1<<2,
+		TEXLOAD_TO_3D_TEXTURE = (1 << 3),
+		TEXLOAD_TO_2D_ARRAY_TEXTURE = (1 << 4),
+		TEXLOAD_TO_3D_TEXTURE_SINGLE_LAYER = (1 << 5),
+		TEXLOAD_TO_2D_ARRAY_TEXTURE_SINGLE_LAYER = (1 << 6),
+		TEXLOAD_NO_2D_TEXTURE = (1 << 7),
 	};
 
 
@@ -186,7 +215,11 @@ public:
 	virtual void UpdateBufferContainer(int ContainerIndex, struct SBufferContainerInfo *pContainerInfo) = 0;
 	virtual void IndicesNumRequiredNotify(unsigned int RequiredIndicesCount) = 0;
 
-	virtual bool IsBufferingEnabled() = 0;
+	virtual bool IsTileBufferingEnabled() = 0;
+	virtual bool IsQuadBufferingEnabled() = 0;
+	virtual bool IsTextBufferingEnabled() = 0;
+	virtual bool IsQuadContainerBufferingEnabled() = 0;
+	virtual bool HasTextureArrays() = 0;
 
 	struct CLineItem
 	{

src/engine/shared/config_variables.h

@@ -369,7 +369,9 @@ MACRO_CONFIG_INT(ClDemoShowSpeed, cl_demo_show_speed, 0, 0, 1, CFGFLAG_SAVE|CFGF
 MACRO_CONFIG_INT(ClDemoKeyboardShortcuts, cl_demo_keyboard_shortcuts, 1, 0, 1, CFGFLAG_SAVE|CFGFLAG_CLIENT, "Enable keyboard shortcuts in demo player")
 
 //opengl
-MACRO_CONFIG_INT(GfxOpenGL3, gfx_opengl3, 0, 0, 1, CFGFLAG_SAVE|CFGFLAG_CLIENT, "Use new OpenGL3 with shaders")
+MACRO_CONFIG_INT(GfxOpenGLMajor, gfx_opengl_major, 3, 1, 10, CFGFLAG_SAVE|CFGFLAG_CLIENT, "OpenGL major version")
+MACRO_CONFIG_INT(GfxOpenGLMinor, gfx_opengl_minor, 0, 0, 10, CFGFLAG_SAVE|CFGFLAG_CLIENT, "OpenGL minor version")
+MACRO_CONFIG_INT(GfxOpenGLPatch, gfx_opengl_patch, 0, 0, 10, CFGFLAG_SAVE|CFGFLAG_CLIENT, "OpenGL patch version")
 #if !defined(CONF_PLATFORM_MACOSX)
 MACRO_CONFIG_INT(GfxEnableTextureUnitOptimization, gfx_enable_texture_unit_optimization, 1, 0, 1, CFGFLAG_SAVE|CFGFLAG_CLIENT, "Use multiple texture units, instead of only one.")
 #else

src/engine/textrender.h

@@ -6,6 +6,7 @@
 
 #include <base/color.h>
 #include <engine/graphics.h>
+#include <stdint.h>
 
 enum
 {
@@ -100,7 +101,7 @@ public:
 	virtual void RenderTextContainer(int TextContainerIndex, STextRenderColor *pTextColor, STextRenderColor *pTextOutlineColor) = 0;
 	virtual void RenderTextContainer(int TextContainerIndex, STextRenderColor *pTextColor, STextRenderColor *pTextOutlineColor, float X, float Y) = 0;
 
-	virtual void UploadEntityLayerText(IGraphics::CTextureHandle Texture, const char *pText, int Length, float x, float y, int FontHeight) = 0;
+	virtual void UploadEntityLayerText(void* pTexBuff, int ImageColorChannelCount, int TexWidth, int TexHeight, const char *pText, int Length, float x, float y, int FontHeight) = 0;
 	virtual int AdjustFontSize(const char *pText, int TextLength, int MaxSize = -1) = 0;
 	virtual int CalculateTextWidth(const char *pText, int TextLength, int FontWidth, int FontHeight) = 0;
 

src/game/client/components/camera.cpp

@@ -38,7 +38,7 @@ void CCamera::ScaleZoom(float Factor)
 
 void CCamera::ChangeZoom(float Target)
 {
-	if(Target >= (Graphics()->IsBufferingEnabled()? 60 : 30))
+	if(Target >= (Graphics()->IsTileBufferingEnabled()? 60 : 30))
 	{
 		return;
 	}

src/game/client/components/mapimages.cpp

@@ -19,6 +19,9 @@ CMapImages::CMapImages(int TextureSize)
 	m_Count = 0;
 	m_TextureScale = TextureSize;
 	m_EntitiesIsLoaded = false;
+	m_SpeedupArrowIsLoaded = false;
+
+	mem_zero(m_aTextureUsedByTileOrQuadLayerFlag, sizeof(m_aTextureUsedByTileOrQuadLayerFlag));
 }
 
 void CMapImages::OnInit()
@@ -35,27 +38,62 @@ void CMapImages::OnMapLoad()
 	{
 		Graphics()->UnloadTexture(m_aTextures[i]);
 		m_aTextures[i] = IGraphics::CTextureHandle();
+		m_aTextureUsedByTileOrQuadLayerFlag[i] = 0;
 	}
 	m_Count = 0;
 
 	int Start;
 	pMap->GetType(MAPITEMTYPE_IMAGE, &Start, &m_Count);
 
+	CLayers *pLayers = m_pClient->Layers();
+	for(int g = 0; g < pLayers->NumGroups(); g++)
+	{
+		CMapItemGroup *pGroup = pLayers->GetGroup(g);
+		if(!pGroup)
+		{
+			continue;
+		}
+
+		for(int l = 0; l < pGroup->m_NumLayers; l++)
+		{
+			CMapItemLayer *pLayer = pLayers->GetLayer(pGroup->m_StartLayer+l);
+			if(pLayer->m_Type == LAYERTYPE_TILES)
+			{
+				CMapItemLayerTilemap *pTLayer = (CMapItemLayerTilemap *)pLayer;
+				if(pTLayer->m_Image != -1 && pTLayer->m_Image < (int)(sizeof(m_aTextures) / sizeof(m_aTextures[0])))
+				{
+					m_aTextureUsedByTileOrQuadLayerFlag[(size_t)pTLayer->m_Image] |= 1;
+				}
+			}
+			else if(pLayer->m_Type == LAYERTYPE_QUADS)
+			{
+				CMapItemLayerQuads *pQLayer = (CMapItemLayerQuads *)pLayer;
+				if(pQLayer->m_Image != -1 && pQLayer->m_Image < (int)(sizeof(m_aTextures) / sizeof(m_aTextures[0])))
+				{
+					m_aTextureUsedByTileOrQuadLayerFlag[(size_t)pQLayer->m_Image] |= 2;
+				}
+			}
+		}
+	}
+
+	int TextureLoadFlag = Graphics()->HasTextureArrays() ? IGraphics::TEXLOAD_TO_2D_ARRAY_TEXTURE : IGraphics::TEXLOAD_TO_3D_TEXTURE;
+
 	// load new textures
 	for(int i = 0; i < m_Count; i++)
 	{
+		int LoadFlag = (((m_aTextureUsedByTileOrQuadLayerFlag[i] & 1) != 0) ? TextureLoadFlag : 0) | (((m_aTextureUsedByTileOrQuadLayerFlag[i] & 2) != 0) ? 0 : (Graphics()->IsTileBufferingEnabled() ? IGraphics::TEXLOAD_NO_2D_TEXTURE : 0));
 		CMapItemImage *pImg = (CMapItemImage *)pMap->GetItem(Start+i, 0, 0);
 		if(pImg->m_External)
 		{
 			char Buf[256];
 			char *pName = (char *)pMap->GetData(pImg->m_ImageName);
 			str_format(Buf, sizeof(Buf), "mapres/%s.png", pName);
-			m_aTextures[i] = Graphics()->LoadTexture(Buf, IStorage::TYPE_ALL, CImageInfo::FORMAT_AUTO, 0);
+			m_aTextures[i] = Graphics()->LoadTexture(Buf, IStorage::TYPE_ALL, CImageInfo::FORMAT_AUTO, LoadFlag);
 		}
 		else
 		{
 			void *pData = pMap->GetData(pImg->m_ImageData);
-			m_aTextures[i] = Graphics()->LoadTextureRaw(pImg->m_Width, pImg->m_Height, CImageInfo::FORMAT_RGBA, pData, CImageInfo::FORMAT_RGBA, 0);
+			m_aTextures[i] = Graphics()->LoadTextureRaw(pImg->m_Width, pImg->m_Height, CImageInfo::FORMAT_RGBA, pData, CImageInfo::FORMAT_RGBA, LoadFlag);
 			pMap->UnloadData(pImg->m_ImageData);
 		}
 	}
@@ -63,35 +101,7 @@ void CMapImages::OnMapLoad()
 
 void CMapImages::LoadBackground(class IMap *pMap)
 {
-	// unload all textures
-	for(int i = 0; i < m_Count; i++)
-	{
-		Graphics()->UnloadTexture(m_aTextures[i]);
-		m_aTextures[i] = IGraphics::CTextureHandle();
-	}
-	m_Count = 0;
-
-	int Start;
-	pMap->GetType(MAPITEMTYPE_IMAGE, &Start, &m_Count);
-
-	// load new textures
-	for(int i = 0; i < m_Count; i++)
-	{
-		CMapItemImage *pImg = (CMapItemImage *)pMap->GetItem(Start+i, 0, 0);
-		if(pImg->m_External)
-		{
-			char Buf[256];
-			char *pName = (char *)pMap->GetData(pImg->m_ImageName);
-			str_format(Buf, sizeof(Buf), "mapres/%s.png", pName);
-			m_aTextures[i] = Graphics()->LoadTexture(Buf, IStorage::TYPE_ALL, CImageInfo::FORMAT_AUTO, 0);
-		}
-		else
-		{
-			void *pData = pMap->GetData(pImg->m_ImageData);
-			m_aTextures[i] = Graphics()->LoadTextureRaw(pImg->m_Width, pImg->m_Height, CImageInfo::FORMAT_RGBA, pData, CImageInfo::FORMAT_RGBA, 0);
-			pMap->UnloadData(pImg->m_ImageData);
-		}
-	}
+	CMapImages::OnMapLoad();
 }
 
 IGraphics::CTextureHandle CMapImages::GetEntities()
@@ -118,13 +128,27 @@ IGraphics::CTextureHandle CMapImages::GetEntities()
 
 		if(m_EntitiesTextures >= 0)
 			Graphics()->UnloadTexture(m_EntitiesTextures);
-		m_EntitiesTextures = Graphics()->LoadTexture(aPath, IStorage::TYPE_ALL, CImageInfo::FORMAT_AUTO, 0);
+		int TextureLoadFlag = Graphics()->HasTextureArrays() ? IGraphics::TEXLOAD_TO_2D_ARRAY_TEXTURE : IGraphics::TEXLOAD_TO_3D_TEXTURE;
+		m_EntitiesTextures = Graphics()->LoadTexture(aPath, IStorage::TYPE_ALL, CImageInfo::FORMAT_AUTO, TextureLoadFlag);
 		m_EntitiesIsLoaded = true;
 		m_pEntitiesGameType = pEntities;
 	}
 	return m_EntitiesTextures;
 }
 
+IGraphics::CTextureHandle CMapImages::GetSpeedupArrow()
+{
+	if(!m_SpeedupArrowIsLoaded)
+	{
+		int TextureLoadFlag = (Graphics()->HasTextureArrays() ? IGraphics::TEXLOAD_TO_2D_ARRAY_TEXTURE_SINGLE_LAYER : IGraphics::TEXLOAD_TO_3D_TEXTURE_SINGLE_LAYER) | IGraphics::TEXLOAD_NO_2D_TEXTURE;
+		m_SpeedupArrowTexture = Graphics()->LoadTexture(g_pData->m_aImages[IMAGE_SPEEDUP_ARROW].m_pFilename, IStorage::TYPE_ALL, CImageInfo::FORMAT_AUTO, TextureLoadFlag);
+
+		m_SpeedupArrowIsLoaded = true;
+	}
+
+	return m_SpeedupArrowTexture;
+}
+
 IGraphics::CTextureHandle CMapImages::GetOverlayBottom()
 {
 	return m_OverlayBottomTexture;
@@ -165,18 +189,20 @@ int CMapImages::GetTextureScale()
 
 IGraphics::CTextureHandle CMapImages::UploadEntityLayerText(int TextureSize, int YOffset)
 {	
-	void *pMem = calloc(1024 * 1024, 1);
-	IGraphics::CTextureHandle Texture = Graphics()->LoadTextureRaw(1024, 1024, CImageInfo::FORMAT_ALPHA, pMem, CImageInfo::FORMAT_ALPHA, IGraphics::TEXLOAD_NOMIPMAPS);
-	free(pMem);
+	void *pMem = calloc(1024 * 1024 * 4, 1);
 
-	UpdateEntityLayerText(Texture, TextureSize, YOffset, 0);
-	UpdateEntityLayerText(Texture, TextureSize, YOffset, 1);
-	UpdateEntityLayerText(Texture, TextureSize, YOffset, 2, 255);
+	UpdateEntityLayerText(pMem, 4, 1024, 1024, TextureSize, YOffset, 0);
+	UpdateEntityLayerText(pMem, 4, 1024, 1024, TextureSize, YOffset, 1);
+	UpdateEntityLayerText(pMem, 4, 1024, 1024, TextureSize, YOffset, 2, 255);
+
+	int TextureLoadFlag = (Graphics()->HasTextureArrays() ? IGraphics::TEXLOAD_TO_2D_ARRAY_TEXTURE : IGraphics::TEXLOAD_TO_3D_TEXTURE) | IGraphics::TEXLOAD_NO_2D_TEXTURE;
+	IGraphics::CTextureHandle Texture = Graphics()->LoadTextureRaw(1024, 1024, CImageInfo::FORMAT_RGBA, pMem, CImageInfo::FORMAT_RGBA, TextureLoadFlag);
+	free(pMem);
 
 	return Texture;
 }
 
-void CMapImages::UpdateEntityLayerText(IGraphics::CTextureHandle Texture, int TextureSize, int YOffset, int NumbersPower, int MaxNumber)
+void CMapImages::UpdateEntityLayerText(void* pTexBuffer, int ImageColorChannelCount, int TexWidth, int TexHeight, int TextureSize, int YOffset, int NumbersPower, int MaxNumber)
 {
 	char aBuf[4];
 	int DigitsCount = NumbersPower+1;
@@ -202,7 +228,7 @@ void CMapImages::UpdateEntityLayerText(IGraphics::CTextureHandle Texture, int Te
 		float x = (CurrentNumber%16)*64;
 		float y = (CurrentNumber/16)*64;
 
-		TextRender()->UploadEntityLayerText(Texture, aBuf, DigitsCount, x+XOffSet, y+YOffset, UniversalSuitableFontSize);
+		TextRender()->UploadEntityLayerText(pTexBuffer, ImageColorChannelCount, TexWidth, TexHeight, aBuf, DigitsCount, x+XOffSet, y+YOffset, UniversalSuitableFontSize);
 	}
 }
 

src/game/client/components/mapimages.h

@@ -9,6 +9,7 @@ class CMapImages : public CComponent
 	friend class CBackground;
 
 	IGraphics::CTextureHandle m_aTextures[64];
+	int m_aTextureUsedByTileOrQuadLayerFlag[64]; // 0: nothing, 1(as flag): tile layer, 2(as flag): quad layer
 	int m_Count;
 
 	const char *m_pEntitiesGameType;
@@ -25,6 +26,7 @@ public:
 
 	// DDRace
 	IGraphics::CTextureHandle GetEntities();
+	IGraphics::CTextureHandle GetSpeedupArrow();
 	
 	IGraphics::CTextureHandle GetOverlayBottom();
 	IGraphics::CTextureHandle GetOverlayTop();
@@ -34,9 +36,10 @@ public:
 	int GetTextureScale();
 
 private:
-
 	bool m_EntitiesIsLoaded;
+	bool m_SpeedupArrowIsLoaded;
 	IGraphics::CTextureHandle m_EntitiesTextures;
+	IGraphics::CTextureHandle m_SpeedupArrowTexture;
 	IGraphics::CTextureHandle m_OverlayBottomTexture;
 	IGraphics::CTextureHandle m_OverlayTopTexture;
 	IGraphics::CTextureHandle m_OverlayCenterTexture;
@@ -44,7 +47,7 @@ private:
 	
 	void InitOverlayTextures();
 	IGraphics::CTextureHandle UploadEntityLayerText(int TextureSize, int YOffset);
-	void UpdateEntityLayerText(IGraphics::CTextureHandle Texture, int TextureSize, int YOffset, int NumbersPower, int MaxNumber = -1);
+	void UpdateEntityLayerText(void* pTexBuffer, int ImageColorChannelCount, int TexWidth, int TexHeight, int TextureSize, int YOffset, int NumbersPower, int MaxNumber = -1);
 };
 
 #endif

src/game/client/components/maplayers.cpp

@@ -125,71 +125,42 @@ void CMapLayers::EnvelopeEval(float TimeOffset, int Env, float *pChannels, void
 	}
 }
 
-struct STmpTile
-{
-	vec2 m_TopLeft;
-	vec2 m_TopRight;
-	vec2 m_BottomRight;
-	vec2 m_BottomLeft;
-};
-struct STmpTileTexCoord
-{
-	STmpTileTexCoord()
-	{
-		m_TexCoordTopLeftRightOrBottom[0] = m_TexCoordTopLeftRightOrBottom[1] = 0;
-		m_TexCoordBottomLeftRightOrBottom[0] = 0; m_TexCoordBottomLeftRightOrBottom[1] = 1;
-		m_TexCoordTopRightRightOrBottom[0] = 1; m_TexCoordTopRightRightOrBottom[1] = 0;
-		m_TexCoordBottomRightRightOrBottom[0] = m_TexCoordBottomRightRightOrBottom[1] = 1;
-	}
-	unsigned char m_TexCoordTopLeft[2];
-	unsigned char m_TexCoordTopLeftRightOrBottom[2];
-	unsigned char m_TexCoordTopRight[2];
-	unsigned char m_TexCoordTopRightRightOrBottom[2];
-	unsigned char m_TexCoordBottomRight[2];
-	unsigned char m_TexCoordBottomRightRightOrBottom[2];
-	unsigned char m_TexCoordBottomLeft[2];
-	unsigned char m_TexCoordBottomLeftRightOrBottom[2];
-};
-
-void FillTmpTileSpeedup(STmpTile* pTmpTile, STmpTileTexCoord* pTmpTex, unsigned char Flags, unsigned char Index, int x, int y, int Scale, CMapItemGroup* pGroup, short AngleRotate)
+void FillTmpTileSpeedup(SGraphicTile* pTmpTile, SGraphicTileTexureCoords* pTmpTex, bool As3DTextureCoord, unsigned char Flags, unsigned char Index, int x, int y, int Scale, CMapItemGroup* pGroup, short AngleRotate)
 {
 	if(pTmpTex)
 	{
 		unsigned char x0 = 0;
 		unsigned char y0 = 0;
-		unsigned char x1 = 16;
-		unsigned char y1 = 0;
-		unsigned char x2 = 16;
-		unsigned char y2 = 16;
-		unsigned char x3 = 0;
-		unsigned char y3 = 16;
+		unsigned char x1 = x0 + 1;
+		unsigned char y1 = y0;
+		unsigned char x2 = x0 + 1;
+		unsigned char y2 = y0 + 1;
+		unsigned char x3 = x0;
+		unsigned char y3 = y0 + 1;
 
-		unsigned char bx0 = 0;
-		unsigned char by0 = 0;
-		unsigned char bx1 = 1;
-		unsigned char by1 = 0;
-		unsigned char bx2 = 1;
-		unsigned char by2 = 1;
-		unsigned char bx3 = 0;
-		unsigned char by3 = 1;
+		pTmpTex->m_TexCoordTopLeft.x = x0;
+		pTmpTex->m_TexCoordTopLeft.y = y0;
+		pTmpTex->m_TexCoordBottomLeft.x = x3;
+		pTmpTex->m_TexCoordBottomLeft.y = y3;
+		pTmpTex->m_TexCoordTopRight.x = x1;
+		pTmpTex->m_TexCoordTopRight.y = y1;
+		pTmpTex->m_TexCoordBottomRight.x = x2;
+		pTmpTex->m_TexCoordBottomRight.y = y2;
 
-		pTmpTex->m_TexCoordTopLeft[0] = x0;
-		pTmpTex->m_TexCoordTopLeft[1] = y0;
-		pTmpTex->m_TexCoordBottomLeft[0] = x3;
-		pTmpTex->m_TexCoordBottomLeft[1] = y3;
-		pTmpTex->m_TexCoordTopRight[0] = x1;
-		pTmpTex->m_TexCoordTopRight[1] = y1;
-		pTmpTex->m_TexCoordBottomRight[0] = x2;
-		pTmpTex->m_TexCoordBottomRight[1] = y2;
-
-		pTmpTex->m_TexCoordTopLeftRightOrBottom[0] = bx0;
-		pTmpTex->m_TexCoordTopLeftRightOrBottom[1] = by0;
-		pTmpTex->m_TexCoordBottomLeftRightOrBottom[0] = bx3;
-		pTmpTex->m_TexCoordBottomLeftRightOrBottom[1] = by3;
-		pTmpTex->m_TexCoordTopRightRightOrBottom[0] = bx1;
-		pTmpTex->m_TexCoordTopRightRightOrBottom[1] = by1;
-		pTmpTex->m_TexCoordBottomRightRightOrBottom[0] = bx2;
-		pTmpTex->m_TexCoordBottomRightRightOrBottom[1] = by2;
+		if(As3DTextureCoord)
+		{
+			pTmpTex->m_TexCoordTopLeft.z = ((float)Index + 0.5f) / 256.f;
+			pTmpTex->m_TexCoordBottomLeft.z = ((float)Index + 0.5f) / 256.f;
+			pTmpTex->m_TexCoordTopRight.z = ((float)Index + 0.5f) / 256.f;
+			pTmpTex->m_TexCoordBottomRight.z = ((float)Index + 0.5f) / 256.f;
+		}
+		else
+		{
+			pTmpTex->m_TexCoordTopLeft.z = Index;
+			pTmpTex->m_TexCoordBottomLeft.z = Index;
+			pTmpTex->m_TexCoordTopRight.z = Index;
+			pTmpTex->m_TexCoordBottomRight.z = Index;
+		}
 	}
 
 	//same as in rotate from Graphics()
@@ -224,31 +195,18 @@ void FillTmpTileSpeedup(STmpTile* pTmpTile, STmpTileTexCoord* pTmpTex, unsigned
 	}
 }
 
-void FillTmpTile(STmpTile* pTmpTile, STmpTileTexCoord* pTmpTex, unsigned char Flags, unsigned char Index, int x, int y, int Scale, CMapItemGroup* pGroup)
+void FillTmpTile(SGraphicTile* pTmpTile, SGraphicTileTexureCoords* pTmpTex, bool As3DTextureCoord, unsigned char Flags, unsigned char Index, int x, int y, int Scale, CMapItemGroup* pGroup)
 {
 	if(pTmpTex)
 	{
-		unsigned char tx = Index%16;
-		unsigned char ty = Index/16;
-		unsigned char x0 = tx;
-		unsigned char y0 = ty;
-		unsigned char x1 = tx+1;
-		unsigned char y1 = ty;
-		unsigned char x2 = tx+1;
-		unsigned char y2 = ty+1;
-		unsigned char x3 = tx;
-		unsigned char y3 = ty+1;
-
-		unsigned char bx0 = 0;
-		unsigned char by0 = 0;
-		unsigned char bx1 = 1;
-		unsigned char by1 = 0;
-		unsigned char bx2 = 1;
-		unsigned char by2 = 1;
-		unsigned char bx3 = 0;
-		unsigned char by3 = 1;
-
-
+		unsigned char x0 = 0;
+		unsigned char y0 = 0;
+		unsigned char x1 = x0 + 1;
+		unsigned char y1 = y0;
+		unsigned char x2 = x0 + 1;
+		unsigned char y2 = y0 + 1;
+		unsigned char x3 = x0;
+		unsigned char y3 = y0 + 1;
 
 		if(Flags&TILEFLAG_VFLIP)
 		{
@@ -256,11 +214,6 @@ void FillTmpTile(STmpTile* pTmpTile, STmpTileTexCoord* pTmpTex, unsigned char Fl
 			x1 = x3;
 			x2 = x3;
 			x3 = x0;
-
-			bx0 = bx2;
-			bx1 = bx3;
-			bx2 = bx3;
-			bx3 = bx0;
 		}
 
 		if(Flags&TILEFLAG_HFLIP)
@@ -269,11 +222,6 @@ void FillTmpTile(STmpTile* pTmpTile, STmpTileTexCoord* pTmpTex, unsigned char Fl
 			y2 = y1;
 			y3 = y1;
 			y1 = y0;
-
-			by0 = by3;
-			by2 = by1;
-			by3 = by1;
-			by1 = by0;
 		}
 
 		if(Flags&TILEFLAG_ROTATE)
@@ -288,36 +236,31 @@ void FillTmpTile(STmpTile* pTmpTile, STmpTileTexCoord* pTmpTex, unsigned char Fl
 			y3 = y2;
 			y2 = y1;
 			y1 = Tmp;
-
-			Tmp = bx0;
-			bx0 = bx3;
-			bx3 = bx2;
-			bx2 = bx1;
-			bx1 = Tmp;
-			Tmp = by0;
-			by0 = by3;
-			by3 = by2;
-			by2 = by1;
-			by1 = Tmp;
 		}
 
-		pTmpTex->m_TexCoordTopLeft[0] = x0;
-		pTmpTex->m_TexCoordTopLeft[1] = y0;
-		pTmpTex->m_TexCoordBottomLeft[0] = x3;
-		pTmpTex->m_TexCoordBottomLeft[1] = y3;
-		pTmpTex->m_TexCoordTopRight[0] = x1;
-		pTmpTex->m_TexCoordTopRight[1] = y1;
-		pTmpTex->m_TexCoordBottomRight[0] = x2;
-		pTmpTex->m_TexCoordBottomRight[1] = y2;
+		pTmpTex->m_TexCoordTopLeft.x = x0;
+		pTmpTex->m_TexCoordTopLeft.y = y0;
+		pTmpTex->m_TexCoordBottomLeft.x = x3;
+		pTmpTex->m_TexCoordBottomLeft.y = y3;
+		pTmpTex->m_TexCoordTopRight.x = x1;
+		pTmpTex->m_TexCoordTopRight.y = y1;
+		pTmpTex->m_TexCoordBottomRight.x = x2;
+		pTmpTex->m_TexCoordBottomRight.y = y2;
 
-		pTmpTex->m_TexCoordTopLeftRightOrBottom[0] = bx0;
-		pTmpTex->m_TexCoordTopLeftRightOrBottom[1] = by0;
-		pTmpTex->m_TexCoordBottomLeftRightOrBottom[0] = bx3;
-		pTmpTex->m_TexCoordBottomLeftRightOrBottom[1] = by3;
-		pTmpTex->m_TexCoordTopRightRightOrBottom[0] = bx1;
-		pTmpTex->m_TexCoordTopRightRightOrBottom[1] = by1;
-		pTmpTex->m_TexCoordBottomRightRightOrBottom[0] = bx2;
-		pTmpTex->m_TexCoordBottomRightRightOrBottom[1] = by2;
+		if(As3DTextureCoord)
+		{
+			pTmpTex->m_TexCoordTopLeft.z = ((float)Index + 0.5f) / 256.f;
+			pTmpTex->m_TexCoordBottomLeft.z = ((float)Index + 0.5f) / 256.f;
+			pTmpTex->m_TexCoordTopRight.z = ((float)Index + 0.5f) / 256.f;
+			pTmpTex->m_TexCoordBottomRight.z = ((float)Index + 0.5f) / 256.f;
+		}
+		else
+		{
+			pTmpTex->m_TexCoordTopLeft.z = Index;
+			pTmpTex->m_TexCoordBottomLeft.z = Index;
+			pTmpTex->m_TexCoordTopRight.z = Index;
+			pTmpTex->m_TexCoordBottomRight.z = Index;
+		}
 	}
 
 	pTmpTile->m_TopLeft.x = x*Scale;
@@ -375,23 +318,23 @@ CMapLayers::STileLayerVisuals::~STileLayerVisuals()
 	m_BorderRight = NULL;
 }
 
-bool AddTile(std::vector<STmpTile>& TmpTiles, std::vector<STmpTileTexCoord>& TmpTileTexCoords, unsigned char Index, unsigned char Flags, int x, int y, CMapItemGroup* pGroup, bool DoTextureCoords, bool FillSpeedup = false, int AngleRotate = -1)
+bool AddTile(std::vector<SGraphicTile>& TmpTiles, std::vector<SGraphicTileTexureCoords>& TmpTileTexCoords, bool As3DTextureCoord, unsigned char Index, unsigned char Flags, int x, int y, CMapItemGroup* pGroup, bool DoTextureCoords, bool FillSpeedup = false, int AngleRotate = -1)
 {
 	if(Index)
 	{
-		TmpTiles.push_back(STmpTile());
-		STmpTile& Tile = TmpTiles.back();
-		STmpTileTexCoord* pTileTex = NULL;
+		TmpTiles.push_back(SGraphicTile());
+		SGraphicTile& Tile = TmpTiles.back();
+		SGraphicTileTexureCoords* pTileTex = NULL;
 		if(DoTextureCoords)
 		{
-			TmpTileTexCoords.push_back(STmpTileTexCoord());
-			STmpTileTexCoord& TileTex = TmpTileTexCoords.back();
+			TmpTileTexCoords.push_back(SGraphicTileTexureCoords());
+			SGraphicTileTexureCoords& TileTex = TmpTileTexCoords.back();
 			pTileTex = &TileTex;
 		}
 		if(FillSpeedup)
-			FillTmpTileSpeedup(&Tile, pTileTex, Flags, 0, x, y, 32.f, pGroup, AngleRotate);
+			FillTmpTileSpeedup(&Tile, pTileTex, As3DTextureCoord, Flags, 0, x, y, 32.f, pGroup, AngleRotate);
 		else
-			FillTmpTile(&Tile, pTileTex, Flags, Index, x, y, 32.f, pGroup);
+			FillTmpTile(&Tile, pTileTex, As3DTextureCoord, Flags, Index, x, y, 32.f, pGroup);
 
 		return true;
 	}
@@ -401,8 +344,8 @@ bool AddTile(std::vector<STmpTile>& TmpTiles, std::vector<STmpTileTexCoord>& Tmp
 struct STmpQuadVertexTextured
 {
 	float m_X, m_Y, m_CenterX, m_CenterY;
-	float m_U, m_V;
 	unsigned char m_R, m_G, m_B, m_A;
+	float m_U, m_V;
 };
 
 struct STmpQuadVertex
@@ -433,7 +376,7 @@ void mem_copy_special(void *pDest, void *pSource, size_t Size, size_t Count, siz
 
 void CMapLayers::OnMapLoad()
 {
-	if(!Graphics()->IsBufferingEnabled())
+	if(!Graphics()->IsTileBufferingEnabled() && !Graphics()->IsQuadBufferingEnabled())
 		return;
 	//clear everything and destroy all buffers
 	if(m_TileLayerVisuals.size() != 0)
@@ -459,22 +402,24 @@ void CMapLayers::OnMapLoad()
 
 	bool PassedGameLayer = false;
 	//prepare all visuals for all tile layers
-	std::vector<STmpTile> tmpTiles;
-	std::vector<STmpTileTexCoord> tmpTileTexCoords;
-	std::vector<STmpTile> tmpBorderTopTiles;
-	std::vector<STmpTileTexCoord> tmpBorderTopTilesTexCoords;
-	std::vector<STmpTile> tmpBorderLeftTiles;
-	std::vector<STmpTileTexCoord> tmpBorderLeftTilesTexCoords;
-	std::vector<STmpTile> tmpBorderRightTiles;
-	std::vector<STmpTileTexCoord> tmpBorderRightTilesTexCoords;
-	std::vector<STmpTile> tmpBorderBottomTiles;
-	std::vector<STmpTileTexCoord> tmpBorderBottomTilesTexCoords;
-	std::vector<STmpTile> tmpBorderCorners;
-	std::vector<STmpTileTexCoord> tmpBorderCornersTexCoords;
+	std::vector<SGraphicTile> tmpTiles;
+	std::vector<SGraphicTileTexureCoords> tmpTileTexCoords;
+	std::vector<SGraphicTile> tmpBorderTopTiles;
+	std::vector<SGraphicTileTexureCoords> tmpBorderTopTilesTexCoords;
+	std::vector<SGraphicTile> tmpBorderLeftTiles;
+	std::vector<SGraphicTileTexureCoords> tmpBorderLeftTilesTexCoords;
+	std::vector<SGraphicTile> tmpBorderRightTiles;
+	std::vector<SGraphicTileTexureCoords> tmpBorderRightTilesTexCoords;
+	std::vector<SGraphicTile> tmpBorderBottomTiles;
+	std::vector<SGraphicTileTexureCoords> tmpBorderBottomTilesTexCoords;
+	std::vector<SGraphicTile> tmpBorderCorners;
+	std::vector<SGraphicTileTexureCoords> tmpBorderCornersTexCoords;
 
 	std::vector<STmpQuad> tmpQuads;
 	std::vector<STmpQuadTextured> tmpQuadsTextured;
 
+	bool As3DTextureCoords = !Graphics()->HasTextureArrays();
+
 	for(int g = 0; g < m_pLayers->NumGroups(); g++)
 	{
 		CMapItemGroup *pGroup = m_pLayers->GetGroup(g);
@@ -530,7 +475,7 @@ void CMapLayers::OnMapLoad()
 					continue;
 			}
 
-			if(pLayer->m_Type == LAYERTYPE_TILES)
+			if(pLayer->m_Type == LAYERTYPE_TILES && Graphics()->IsTileBufferingEnabled())
 			{
 				bool DoTextureCoords = false;
 				CMapItemLayerTilemap *pTMap = (CMapItemLayerTilemap *)pLayer;
@@ -611,6 +556,23 @@ void CMapLayers::OnMapLoad()
 						tmpBorderBottomTilesTexCoords.clear();
 						tmpBorderCornersTexCoords.clear();
 
+						if(!DoTextureCoords) {
+							tmpTiles.reserve((size_t)(pTMap->m_Width*pTMap->m_Height));
+							tmpBorderTopTiles.reserve((size_t)pTMap->m_Width);
+							tmpBorderBottomTiles.reserve((size_t)pTMap->m_Width);
+							tmpBorderLeftTiles.reserve((size_t)pTMap->m_Height);
+							tmpBorderRightTiles.reserve((size_t)pTMap->m_Height);
+							tmpBorderCorners.reserve((size_t)4);
+						}
+						else {
+							tmpTileTexCoords.reserve((size_t)(pTMap->m_Width*pTMap->m_Height));
+							tmpBorderTopTilesTexCoords.reserve((size_t)pTMap->m_Width);
+							tmpBorderBottomTilesTexCoords.reserve((size_t)pTMap->m_Width);
+							tmpBorderLeftTilesTexCoords.reserve((size_t)pTMap->m_Height);
+							tmpBorderRightTilesTexCoords.reserve((size_t)pTMap->m_Height);
+							tmpBorderCornersTexCoords.reserve((size_t)4);
+						}
+
 						int x = 0;
 						int y = 0;
 						for(y = 0; y < pTMap->m_Height; ++y)
@@ -699,7 +661,7 @@ void CMapLayers::OnMapLoad()
 								if(IsSpeedupLayer && CurOverlay == 0)
 									AddAsSpeedup = true;
 
-								if(AddTile(tmpTiles, tmpTileTexCoords, Index, Flags, x, y, pGroup, DoTextureCoords, AddAsSpeedup, AngleRotate))
+								if(AddTile(tmpTiles, tmpTileTexCoords, As3DTextureCoords, Index, Flags, x, y, pGroup, DoTextureCoords, AddAsSpeedup, AngleRotate))
 									Visuals.m_TilesOfLayer[y*pTMap->m_Width + x].Draw(true);
 
 								//do the border tiles
@@ -708,20 +670,20 @@ void CMapLayers::OnMapLoad()
 									if(y == 0)
 									{
 										Visuals.m_BorderTopLeft.SetIndexBufferByteOffset((offset_ptr32)(tmpBorderCorners.size()*6*sizeof(unsigned int)));
-										if(AddTile(tmpBorderCorners, tmpBorderCornersTexCoords, Index, Flags, x, y, pGroup, DoTextureCoords, AddAsSpeedup, AngleRotate))
+										if(AddTile(tmpBorderCorners, tmpBorderCornersTexCoords, As3DTextureCoords, Index, Flags, x, y, pGroup, DoTextureCoords, AddAsSpeedup, AngleRotate))
 											Visuals.m_BorderTopLeft.Draw(true);
 									}
 									else if(y == pTMap->m_Height - 1)
 									{
 										Visuals.m_BorderBottomLeft.SetIndexBufferByteOffset((offset_ptr32)(tmpBorderCorners.size()*6*sizeof(unsigned int)));
-										if(AddTile(tmpBorderCorners, tmpBorderCornersTexCoords, Index, Flags, x, y, pGroup, DoTextureCoords, AddAsSpeedup, AngleRotate))
+										if(AddTile(tmpBorderCorners, tmpBorderCornersTexCoords, As3DTextureCoords, Index, Flags, x, y, pGroup, DoTextureCoords, AddAsSpeedup, AngleRotate))
 											Visuals.m_BorderBottomLeft.Draw(true);
 
 									}
 									else
 									{
 										Visuals.m_BorderLeft[y-1].SetIndexBufferByteOffset((offset_ptr32)(tmpBorderLeftTiles.size()*6*sizeof(unsigned int)));
-										if(AddTile(tmpBorderLeftTiles, tmpBorderLeftTilesTexCoords, Index, Flags, x, y, pGroup, DoTextureCoords, AddAsSpeedup, AngleRotate))
+										if(AddTile(tmpBorderLeftTiles, tmpBorderLeftTilesTexCoords, As3DTextureCoords, Index, Flags, x, y, pGroup, DoTextureCoords, AddAsSpeedup, AngleRotate))
 											Visuals.m_BorderLeft[y-1].Draw(true);
 									}
 								}
@@ -730,21 +692,21 @@ void CMapLayers::OnMapLoad()
 									if(y == 0)
 									{
 										Visuals.m_BorderTopRight.SetIndexBufferByteOffset((offset_ptr32)(tmpBorderCorners.size()*6*sizeof(unsigned int)));
-										if(AddTile(tmpBorderCorners, tmpBorderCornersTexCoords, Index, Flags, x, y, pGroup, DoTextureCoords, AddAsSpeedup, AngleRotate))
+										if(AddTile(tmpBorderCorners, tmpBorderCornersTexCoords, As3DTextureCoords, Index, Flags, x, y, pGroup, DoTextureCoords, AddAsSpeedup, AngleRotate))
 											Visuals.m_BorderTopRight.Draw(true);
 
 									}
 									else if(y == pTMap->m_Height - 1)
 									{
 										Visuals.m_BorderBottomRight.SetIndexBufferByteOffset((offset_ptr32)(tmpBorderCorners.size()*6*sizeof(unsigned int)));
-										if(AddTile(tmpBorderCorners, tmpBorderCornersTexCoords, Index, Flags, x, y, pGroup, DoTextureCoords, AddAsSpeedup, AngleRotate))
+										if(AddTile(tmpBorderCorners, tmpBorderCornersTexCoords, As3DTextureCoords, Index, Flags, x, y, pGroup, DoTextureCoords, AddAsSpeedup, AngleRotate))
 											Visuals.m_BorderBottomRight.Draw(true);
 
 									}
 									else
 									{
 										Visuals.m_BorderRight[y-1].SetIndexBufferByteOffset((offset_ptr32)(tmpBorderRightTiles.size()*6*sizeof(unsigned int)));
-										if(AddTile(tmpBorderRightTiles, tmpBorderRightTilesTexCoords, Index, Flags, x, y, pGroup, DoTextureCoords, AddAsSpeedup, AngleRotate))
+										if(AddTile(tmpBorderRightTiles, tmpBorderRightTilesTexCoords, As3DTextureCoords, Index, Flags, x, y, pGroup, DoTextureCoords, AddAsSpeedup, AngleRotate))
 											Visuals.m_BorderRight[y-1].Draw(true);
 									}
 								}
@@ -753,7 +715,7 @@ void CMapLayers::OnMapLoad()
 									if(x > 0 && x < pTMap->m_Width - 1)
 									{
 										Visuals.m_BorderTop[x-1].SetIndexBufferByteOffset((offset_ptr32)(tmpBorderTopTiles.size()*6*sizeof(unsigned int)));
-										if(AddTile(tmpBorderTopTiles, tmpBorderTopTilesTexCoords, Index, Flags, x, y, pGroup, DoTextureCoords, AddAsSpeedup, AngleRotate))
+										if(AddTile(tmpBorderTopTiles, tmpBorderTopTilesTexCoords, As3DTextureCoords, Index, Flags, x, y, pGroup, DoTextureCoords, AddAsSpeedup, AngleRotate))
 											Visuals.m_BorderTop[x-1].Draw(true);
 									}
 								}
@@ -762,7 +724,7 @@ void CMapLayers::OnMapLoad()
 									if(x > 0 && x < pTMap->m_Width - 1)
 									{
 										Visuals.m_BorderBottom[x-1].SetIndexBufferByteOffset((offset_ptr32)(tmpBorderBottomTiles.size()*6*sizeof(unsigned int)));
-										if(AddTile(tmpBorderBottomTiles, tmpBorderBottomTilesTexCoords, Index, Flags, x, y, pGroup, DoTextureCoords, AddAsSpeedup, AngleRotate))
+										if(AddTile(tmpBorderBottomTiles, tmpBorderBottomTilesTexCoords, As3DTextureCoords, Index, Flags, x, y, pGroup, DoTextureCoords, AddAsSpeedup, AngleRotate))
 											Visuals.m_BorderBottom[x-1].Draw(true);
 									}
 								}
@@ -773,7 +735,7 @@ void CMapLayers::OnMapLoad()
 						if(IsGameLayer)
 						{
 							Visuals.m_BorderKillTile.SetIndexBufferByteOffset((offset_ptr32)(tmpTiles.size() * 6 * sizeof(unsigned int)));
-							if(AddTile(tmpTiles, tmpTileTexCoords, TILE_DEATH, 0, 0, 0, pGroup, DoTextureCoords))
+							if(AddTile(tmpTiles, tmpTileTexCoords, As3DTextureCoords, TILE_DEATH, 0, 0, 0, pGroup, DoTextureCoords))
 								Visuals.m_BorderKillTile.Draw(true);
 						}
 
@@ -836,60 +798,55 @@ void CMapLayers::OnMapLoad()
 						float* pTmpTiles = (tmpTiles.size() == 0) ? NULL : (float*)&tmpTiles[0];
 						unsigned char* pTmpTileTexCoords = (tmpTileTexCoords.size() == 0) ? NULL : (unsigned char*)&tmpTileTexCoords[0];
 
-						size_t UploadDataSize = tmpTileTexCoords.size() * sizeof(STmpTileTexCoord) + tmpTiles.size() * sizeof(STmpTile);
-						char* pUploadData = new char[UploadDataSize];
-
-						mem_copy_special(pUploadData, pTmpTiles, sizeof(vec2), tmpTiles.size() * 4, (DoTextureCoords ? (sizeof(unsigned char) * 2 * 2) : 0));
-						if(DoTextureCoords)
+						Visuals.m_BufferContainerIndex = -1;
+						size_t UploadDataSize = tmpTileTexCoords.size() * sizeof(SGraphicTileTexureCoords) + tmpTiles.size() * sizeof(SGraphicTile);
+						if(UploadDataSize > 0)
 						{
-							mem_copy_special(pUploadData + sizeof(vec2), pTmpTileTexCoords, sizeof(unsigned char) * 2 * 2, tmpTiles.size() * 4, (DoTextureCoords ? (sizeof(vec2)) : 0));
-						}
+							char* pUploadData = new char[UploadDataSize];
 
-						// first create the buffer object
-						int BufferObjectIndex = Graphics()->CreateBufferObject(UploadDataSize, pUploadData);
-						delete[] pUploadData;
+							mem_copy_special(pUploadData, pTmpTiles, sizeof(vec2), tmpTiles.size() * 4, (DoTextureCoords ? sizeof(vec3) : 0));
+							if(DoTextureCoords)
+							{
+								mem_copy_special(pUploadData + sizeof(vec2), pTmpTileTexCoords, sizeof(vec3), tmpTiles.size() * 4, (DoTextureCoords ? (sizeof(vec2)) : 0));
+							}
 
-						// then create the buffer container
-						SBufferContainerInfo ContainerInfo;
-						ContainerInfo.m_Stride = (DoTextureCoords ? (sizeof(float) * 2 + sizeof(unsigned char) * 2 * 2) : 0);
-						ContainerInfo.m_Attributes.push_back(SBufferContainerInfo::SAttribute());
-						SBufferContainerInfo::SAttribute* pAttr = &ContainerInfo.m_Attributes.back();
-						pAttr->m_DataTypeCount = 2;
-						pAttr->m_Type = GRAPHICS_TYPE_FLOAT;
-						pAttr->m_Normalized = false;
-						pAttr->m_pOffset = 0;
-						pAttr->m_FuncType = 0;
-						pAttr->m_VertBufferBindingIndex = BufferObjectIndex;
-						if(DoTextureCoords)
-						{
+							// first create the buffer object
+							int BufferObjectIndex = Graphics()->CreateBufferObject(UploadDataSize, pUploadData);
+							delete[] pUploadData;
+
+							// then create the buffer container
+							SBufferContainerInfo ContainerInfo;
+							ContainerInfo.m_Stride = (DoTextureCoords ? (sizeof(float) * 2 + sizeof(vec3)) : 0);
 							ContainerInfo.m_Attributes.push_back(SBufferContainerInfo::SAttribute());
-							pAttr = &ContainerInfo.m_Attributes.back();
+							SBufferContainerInfo::SAttribute* pAttr = &ContainerInfo.m_Attributes.back();
 							pAttr->m_DataTypeCount = 2;
-							pAttr->m_Type = GRAPHICS_TYPE_UNSIGNED_BYTE;
+							pAttr->m_Type = GRAPHICS_TYPE_FLOAT;
 							pAttr->m_Normalized = false;
-							pAttr->m_pOffset = (void*)(sizeof(vec2));
+							pAttr->m_pOffset = 0;
 							pAttr->m_FuncType = 0;
 							pAttr->m_VertBufferBindingIndex = BufferObjectIndex;
+							if(DoTextureCoords)
+							{
+								ContainerInfo.m_Attributes.push_back(SBufferContainerInfo::SAttribute());
+								pAttr = &ContainerInfo.m_Attributes.back();
+								pAttr->m_DataTypeCount = 3;
+								pAttr->m_Type = GRAPHICS_TYPE_FLOAT;
+								pAttr->m_Normalized = false;
+								pAttr->m_pOffset = (void*)(sizeof(vec2));
+								pAttr->m_FuncType = 0;
+								pAttr->m_VertBufferBindingIndex = BufferObjectIndex;
+							}
 
-							ContainerInfo.m_Attributes.push_back(SBufferContainerInfo::SAttribute());
-							pAttr = &ContainerInfo.m_Attributes.back();
-							pAttr->m_DataTypeCount = 2;
-							pAttr->m_Type = GRAPHICS_TYPE_UNSIGNED_BYTE;
-							pAttr->m_Normalized = false;
-							pAttr->m_pOffset = (void*)(sizeof(vec2) + sizeof(unsigned char) * 2);
-							pAttr->m_FuncType = 1;
-							pAttr->m_VertBufferBindingIndex = BufferObjectIndex;
+							Visuals.m_BufferContainerIndex = Graphics()->CreateBufferContainer(&ContainerInfo);
+							// and finally inform the backend how many indices are required
+							Graphics()->IndicesNumRequiredNotify(tmpTiles.size() * 6);
 						}
 
-						Visuals.m_BufferContainerIndex = Graphics()->CreateBufferContainer(&ContainerInfo);
-						// and finally inform the backend how many indices are required
-						Graphics()->IndicesNumRequiredNotify(tmpTiles.size() * 6);
-
 						++CurOverlay;
 					}
 				}
 			}
-			else if(pLayer->m_Type == LAYERTYPE_QUADS)
+			else if(pLayer->m_Type == LAYERTYPE_QUADS && Graphics()->IsQuadBufferingEnabled())
 			{
 				CMapItemLayerQuads *pQLayer = (CMapItemLayerQuads *)pLayer;
 
@@ -971,6 +928,14 @@ void CMapLayers::OnMapLoad()
 					pAttr->m_pOffset = 0;
 					pAttr->m_FuncType = 0;
 					pAttr->m_VertBufferBindingIndex = BufferObjectIndex;
+					ContainerInfo.m_Attributes.push_back(SBufferContainerInfo::SAttribute());
+					pAttr = &ContainerInfo.m_Attributes.back();
+					pAttr->m_DataTypeCount = 4;
+					pAttr->m_Type = GRAPHICS_TYPE_UNSIGNED_BYTE;
+					pAttr->m_Normalized = true;
+					pAttr->m_pOffset = (void*)(sizeof(float) * 4);
+					pAttr->m_FuncType = 0;
+					pAttr->m_VertBufferBindingIndex = BufferObjectIndex;
 					if(Textured)
 					{
 						ContainerInfo.m_Attributes.push_back(SBufferContainerInfo::SAttribute());
@@ -978,18 +943,10 @@ void CMapLayers::OnMapLoad()
 						pAttr->m_DataTypeCount = 2;
 						pAttr->m_Type = GRAPHICS_TYPE_FLOAT;
 						pAttr->m_Normalized = false;
-						pAttr->m_pOffset = (void*)(sizeof(float) * 4);
+						pAttr->m_pOffset = (void*)(sizeof(float) * 4 + sizeof(unsigned char) * 4);
 						pAttr->m_FuncType = 0;
 						pAttr->m_VertBufferBindingIndex = BufferObjectIndex;
 					}
-					ContainerInfo.m_Attributes.push_back(SBufferContainerInfo::SAttribute());
-					pAttr = &ContainerInfo.m_Attributes.back();
-					pAttr->m_DataTypeCount = 4;
-					pAttr->m_Type = GRAPHICS_TYPE_UNSIGNED_BYTE;
-					pAttr->m_Normalized = true;
-					pAttr->m_pOffset = (void*)(sizeof(float) * 4 + (Textured ? (sizeof(float) * 2) : 0));
-					pAttr->m_FuncType = 0;
-					pAttr->m_VertBufferBindingIndex = BufferObjectIndex;
 
 					pQLayerVisuals->m_BufferContainerIndex = Graphics()->CreateBufferContainer(&ContainerInfo);
 					// and finally inform the backend how many indices are required
@@ -1738,7 +1695,7 @@ void CMapLayers::OnRender()
 							Color = ColorRGBA(pTMap->m_Color.r/255.0f, pTMap->m_Color.g/255.0f, pTMap->m_Color.b/255.0f, pTMap->m_Color.a/255.0f*g_Config.m_ClOverlayEntities/100.0f);
 						else if(!IsGameLayer && g_Config.m_ClOverlayEntities && !(m_Type == TYPE_BACKGROUND_FORCE))
 							Color = ColorRGBA(pTMap->m_Color.r/255.0f, pTMap->m_Color.g/255.0f, pTMap->m_Color.b/255.0f, pTMap->m_Color.a/255.0f*(100-g_Config.m_ClOverlayEntities)/100.0f);
-						if(!Graphics()->IsBufferingEnabled())
+						if(!Graphics()->IsTileBufferingEnabled())
 						{
 							Graphics()->BlendNone();
 							RenderTools()->RenderTilemap(pTiles, pTMap->m_Width, pTMap->m_Height, 32.0f, Color, TILERENDERFLAG_EXTEND|LAYERRENDERFLAG_OPAQUE,
@@ -1761,7 +1718,8 @@ void CMapLayers::OnRender()
 
 							RenderTools()->RenderTilemap(pTiles, pTMap->m_Width, pTMap->m_Height, 32.0f, Color, TILERENDERFLAG_EXTEND|LAYERRENDERFLAG_TRANSPARENT,
 															EnvelopeEval, this, pTMap->m_ColorEnv, pTMap->m_ColorEnvOffset);
-						} else
+						}
+						else
 						{
 							Graphics()->BlendNormal();
 							// draw kill tiles outside the entity clipping rectangle
@@ -1791,7 +1749,7 @@ void CMapLayers::OnRender()
 					{
 						if(g_Config.m_ClShowQuads)
 						{
-							if(!Graphics()->IsBufferingEnabled())
+							if(!Graphics()->IsQuadBufferingEnabled())
 							{
 								//Graphics()->BlendNone();
 								//RenderTools()->ForceRenderQuads(pQuads, pQLayer->m_NumQuads, LAYERRENDERFLAG_OPAQUE, EnvelopeEval, this, 1.f);
@@ -1805,7 +1763,7 @@ void CMapLayers::OnRender()
 						}
 					} else
 					{
-						if(!Graphics()->IsBufferingEnabled())
+						if(!Graphics()->IsQuadBufferingEnabled())
 						{
 							//Graphics()->BlendNone();
 							//RenderTools()->RenderQuads(pQuads, pQLayer->m_NumQuads, LAYERRENDERFLAG_OPAQUE, EnvelopeEval, this);
@@ -1830,7 +1788,7 @@ void CMapLayers::OnRender()
 				if(Size >= pTMap->m_Width*pTMap->m_Height*sizeof(CTile))
 				{
 					ColorRGBA Color = ColorRGBA(pTMap->m_Color.r/255.0f, pTMap->m_Color.g/255.0f, pTMap->m_Color.b/255.0f, pTMap->m_Color.a/255.0f*g_Config.m_ClOverlayEntities/100.0f);
-					if(!Graphics()->IsBufferingEnabled())
+					if(!Graphics()->IsTileBufferingEnabled())
 					{
 						Graphics()->BlendNone();
 						RenderTools()->RenderTilemap(pFrontTiles, pTMap->m_Width, pTMap->m_Height, 32.0f, Color, TILERENDERFLAG_EXTEND|LAYERRENDERFLAG_OPAQUE,
@@ -1857,7 +1815,7 @@ void CMapLayers::OnRender()
 				if(Size >= pTMap->m_Width*pTMap->m_Height*sizeof(CSwitchTile))
 				{
 					ColorRGBA Color = ColorRGBA(pTMap->m_Color.r/255.0f, pTMap->m_Color.g/255.0f, pTMap->m_Color.b/255.0f, pTMap->m_Color.a/255.0f*g_Config.m_ClOverlayEntities/100.0f);
-					if(!Graphics()->IsBufferingEnabled())
+					if(!Graphics()->IsTileBufferingEnabled())
 					{
 						Graphics()->BlendNone();
 						RenderTools()->RenderSwitchmap(pSwitchTiles, pTMap->m_Width, pTMap->m_Height, 32.0f, Color, TILERENDERFLAG_EXTEND|LAYERRENDERFLAG_OPAQUE);
@@ -1890,7 +1848,7 @@ void CMapLayers::OnRender()
 				if(Size >= pTMap->m_Width*pTMap->m_Height*sizeof(CTeleTile))
 				{
 					ColorRGBA Color = ColorRGBA(pTMap->m_Color.r/255.0f, pTMap->m_Color.g/255.0f, pTMap->m_Color.b/255.0f, pTMap->m_Color.a/255.0f*g_Config.m_ClOverlayEntities/100.0f);
-					if(!Graphics()->IsBufferingEnabled())
+					if(!Graphics()->IsTileBufferingEnabled())
 					{
 						Graphics()->BlendNone();
 						RenderTools()->RenderTelemap(pTeleTiles, pTMap->m_Width, pTMap->m_Height, 32.0f, Color, TILERENDERFLAG_EXTEND|LAYERRENDERFLAG_OPAQUE);
@@ -1921,7 +1879,7 @@ void CMapLayers::OnRender()
 				if(Size >= pTMap->m_Width*pTMap->m_Height*sizeof(CSpeedupTile))
 				{
 					ColorRGBA Color = ColorRGBA(pTMap->m_Color.r/255.0f, pTMap->m_Color.g/255.0f, pTMap->m_Color.b/255.0f, pTMap->m_Color.a/255.0f*g_Config.m_ClOverlayEntities/100.0f);
-					if(!Graphics()->IsBufferingEnabled())
+					if(!Graphics()->IsTileBufferingEnabled())
 					{
 						Graphics()->BlendNone();
 						RenderTools()->RenderSpeedupmap(pSpeedupTiles, pTMap->m_Width, pTMap->m_Height, 32.0f, Color, TILERENDERFLAG_EXTEND|LAYERRENDERFLAG_OPAQUE);
@@ -1935,7 +1893,7 @@ void CMapLayers::OnRender()
 
 						// draw arrow -- clamp to the edge of the arrow image
 						Graphics()->WrapClamp();
-						Graphics()->TextureSet(g_pData->m_aImages[IMAGE_SPEEDUP_ARROW].m_Id);
+						Graphics()->TextureSet(m_pImages->GetSpeedupArrow());
 						RenderTileLayer(TileLayerCounter-3, &Color, pTMap, pGroup);
 						Graphics()->WrapNormal();
 						if(g_Config.m_ClTextEntities)
@@ -1959,7 +1917,7 @@ void CMapLayers::OnRender()
 				if(Size >= pTMap->m_Width*pTMap->m_Height*sizeof(CTuneTile))
 				{
 					ColorRGBA Color = ColorRGBA(pTMap->m_Color.r/255.0f, pTMap->m_Color.g/255.0f, pTMap->m_Color.b/255.0f, pTMap->m_Color.a/255.0f*g_Config.m_ClOverlayEntities/100.0f);
-					if(!Graphics()->IsBufferingEnabled())
+					if(!Graphics()->IsTileBufferingEnabled())
 					{
 						Graphics()->BlendNone();
 						RenderTools()->RenderTunemap(pTuneTiles, pTMap->m_Width, pTMap->m_Height, 32.0f, Color, TILERENDERFLAG_EXTEND|LAYERRENDERFLAG_OPAQUE);

src/game/client/components/menus_settings.cpp

@@ -907,7 +907,7 @@ void CMenus::RenderSettingsGraphics(CUIRect MainView)
 	static int s_GfxFsaaSamples = g_Config.m_GfxFsaaSamples;
 	static int s_GfxTextureQuality = g_Config.m_GfxTextureQuality;
 	static int s_GfxTextureCompression = g_Config.m_GfxTextureCompression;
-	static int s_GfxOpenGLVersion = g_Config.m_GfxOpenGL3;
+	static int s_GfxOpenGLVersion = (g_Config.m_GfxOpenGLMajor == 3 && g_Config.m_GfxOpenGLMinor == 3) || g_Config.m_GfxOpenGLMajor >= 4;
 	static int s_GfxEnableTextureUnitOptimization = g_Config.m_GfxEnableTextureUnitOptimization;
 	static int s_GfxUsePreinitBuffer = g_Config.m_GfxUsePreinitBuffer;
 	static int s_GfxHighdpi = g_Config.m_GfxHighdpi;
@@ -1033,13 +1033,27 @@ void CMenus::RenderSettingsGraphics(CUIRect MainView)
 		g_Config.m_GfxHighDetail ^= 1;
 
 	MainView.HSplitTop(20.0f, &Button, &MainView);
-	if(DoButton_CheckBox(&g_Config.m_GfxOpenGL3, Localize("Use OpenGL 3.3 (experimental)"), g_Config.m_GfxOpenGL3, &Button))
+	bool IsNewOpenGL = (g_Config.m_GfxOpenGLMajor == 3 && g_Config.m_GfxOpenGLMinor == 3) || g_Config.m_GfxOpenGLMajor >= 4;
+	if(DoButton_CheckBox(&g_Config.m_GfxOpenGLMajor, Localize("Use OpenGL 3.3 (experimental)"), IsNewOpenGL, &Button))
 	{
 		CheckSettings = true;
-		g_Config.m_GfxOpenGL3 ^= 1;
+		if(IsNewOpenGL)
+		{
+			g_Config.m_GfxOpenGLMajor = 2;
+			g_Config.m_GfxOpenGLMinor = 1;
+			g_Config.m_GfxOpenGLPatch = 0;
+			IsNewOpenGL = false;
+		}
+		else
+		{
+			g_Config.m_GfxOpenGLMajor = 3;
+			g_Config.m_GfxOpenGLMinor = 3;
+			g_Config.m_GfxOpenGLPatch = 0;
+			IsNewOpenGL = true;
+		}
 	}
 
-	if(g_Config.m_GfxOpenGL3)
+	if(IsNewOpenGL)
 	{
 		MainView.HSplitTop(20.0f, &Button, &MainView);
 		if(DoButton_CheckBox(&g_Config.m_GfxUsePreinitBuffer, Localize("Preinit VBO (iGPUs only)"), g_Config.m_GfxUsePreinitBuffer, &Button))
@@ -1074,7 +1088,7 @@ void CMenus::RenderSettingsGraphics(CUIRect MainView)
 			s_GfxFsaaSamples == g_Config.m_GfxFsaaSamples &&
 			s_GfxTextureQuality == g_Config.m_GfxTextureQuality &&
 			s_GfxTextureCompression == g_Config.m_GfxTextureCompression &&
-			s_GfxOpenGLVersion == g_Config.m_GfxOpenGL3 &&
+			s_GfxOpenGLVersion == (int)IsNewOpenGL &&
 			s_GfxUsePreinitBuffer == g_Config.m_GfxUsePreinitBuffer &&
 			s_GfxEnableTextureUnitOptimization == g_Config.m_GfxEnableTextureUnitOptimization &&
 			s_GfxHighdpi == g_Config.m_GfxHighdpi)

src/game/client/components/particles.cpp

@@ -178,7 +178,7 @@ void CParticles::RenderGroup(int Group)
 	Graphics()->TextureSet(g_pData->m_aImages[IMAGE_PARTICLES].m_Id);
 	
 	// don't use the buffer methods here, else the old renderer gets many draw calls
-	if(Graphics()->IsBufferingEnabled())
+	if(Graphics()->IsQuadContainerBufferingEnabled())
 	{
 		int i = m_aFirstPart[Group];