Merge #3292

3292: Some shader refactoring r=def- a=Jupeyy

Small refactoring for GL 3.3+ shaders.
Removes "if" checks where unneeded or CPU can calculate the result faster.

Also renames some uniforms to be consistent within all shaders.

## Checklist

- [x] Tested the change ingame
- [ ] Provided screenshots if it is a visual change
- [ ] Tested in combination with possibly related configuration options
- [ ] Written a unit test if it works standalone, system.c especially
- [ ] Considered possible null pointers and out of bounds array indexing
- [ ] Changed no physics that affect existing maps
- [ ] Tested the change with [ASan+UBSan or valgrind's memcheck](https://github.com/ddnet/ddnet/#using-addresssanitizer--undefinedbehavioursanitizer-or-valgrinds-memcheck) (optional)


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

data/shader/prim.frag

@@ -1,5 +1,4 @@
-uniform int isTextured;
-uniform sampler2D textureSampler;
+uniform sampler2D gTextureSampler;
 
 noperspective in vec2 texCoord;
 noperspective in vec4 vertColor;
@@ -7,10 +6,10 @@ noperspective in vec4 vertColor;
 out vec4 FragClr;
 void main()
 {
-	if(isTextured == 1)
-	{
-		vec4 tex = texture(textureSampler, texCoord);
+#ifdef TW_TEXTURED
+	vec4 tex = texture(gTextureSampler, texCoord);
 	FragClr = tex * vertColor;
-	}
-	else FragClr = vertColor;
+#else
+	FragClr = vertColor;
+#endif
 }

data/shader/prim.vert

@@ -2,14 +2,14 @@ layout (location = 0) in vec2 inVertex;
 layout (location = 1) in vec2 inVertexTexCoord;
 layout (location = 2) in vec4 inVertexColor;
 
-uniform mat4x2 Pos;
+uniform mat4x2 gPos;
 
 noperspective out vec2 texCoord;
 noperspective out vec4 vertColor;
 
 void main()
 {
-	gl_Position = vec4(Pos * vec4(inVertex, 0.0, 1.0), 0.0, 1.0);
+	gl_Position = vec4(gPos * vec4(inVertex, 0.0, 1.0), 0.0, 1.0);
 	texCoord = inVertexTexCoord;
 	vertColor = inVertexColor;
 }

data/shader/primex.vert

@@ -4,7 +4,9 @@ layout (location = 2) in vec4 inVertexColor;
 
 uniform mat4x2 gPos;
 
+#ifndef TW_ROTATIONLESS
 uniform float gRotation;
+#endif
 uniform vec2 gCenter;
 
 noperspective out vec2 texCoord;
@@ -13,14 +15,13 @@ noperspective out vec4 vertColor;
 void main()
 {
 	vec2 FinalPos = vec2(inVertex.xy);
-	if(gRotation != 0.0)
-	{
+#ifndef TW_ROTATIONLESS
 	float X = FinalPos.x - gCenter.x;
 	float Y = FinalPos.y - gCenter.y;
 	
 	FinalPos.x = X * cos(gRotation) - Y * sin(gRotation) + gCenter.x;
 	FinalPos.y = X * sin(gRotation) + Y * cos(gRotation) + gCenter.y;
-	}
+#endif
 
 	gl_Position = vec4(gPos * vec4(FinalPos, 0.0, 1.0), 0.0, 1.0);
 	texCoord = inVertexTexCoord;

data/shader/spritemulti.frag

@@ -1,6 +1,6 @@
-uniform sampler2D textureSampler;
+uniform sampler2D gTextureSampler;
 
-uniform vec4 VerticesColor;
+uniform vec4 gVerticesColor;
 
 noperspective in vec2 texCoord;
 noperspective in vec4 vertColor;
@@ -8,6 +8,6 @@ noperspective in vec4 vertColor;
 out vec4 FragClr;
 void main()
 {
-	vec4 tex = texture(textureSampler, texCoord);
-	FragClr = tex * vertColor * VerticesColor;
+	vec4 tex = texture(gTextureSampler, texCoord);
+	FragClr = tex * vertColor * gVerticesColor;
 }

data/shader/spritemulti.vert

@@ -2,10 +2,10 @@ layout (location = 0) in vec2 inVertex;
 layout (location = 1) in vec2 inVertexTexCoord;
 layout (location = 2) in vec4 inVertexColor;
 
-uniform mat4x2 Pos;
+uniform mat4x2 gPos;
 
-uniform vec4 RSP[228];
-uniform vec2 Center;
+uniform vec4 gRSP[228];
+uniform vec2 gCenter;
 
 noperspective out vec2 texCoord;
 noperspective out vec4 vertColor;
@@ -13,22 +13,22 @@ noperspective out vec4 vertColor;
 void main()
 {
 	vec2 FinalPos = vec2(inVertex.xy);
-	if(RSP[gl_InstanceID].w != 0.0)
+	if(gRSP[gl_InstanceID].w != 0.0)
 	{
-		float X = FinalPos.x - Center.x;
-		float Y = FinalPos.y - Center.y;
+		float X = FinalPos.x - gCenter.x;
+		float Y = FinalPos.y - gCenter.y;
 		
-		FinalPos.x = X * cos(RSP[gl_InstanceID].w) - Y * sin(RSP[gl_InstanceID].w) + Center.x;
-		FinalPos.y = X * sin(RSP[gl_InstanceID].w) + Y * cos(RSP[gl_InstanceID].w) + Center.y;
+		FinalPos.x = X * cos(gRSP[gl_InstanceID].w) - Y * sin(gRSP[gl_InstanceID].w) + gCenter.x;
+		FinalPos.y = X * sin(gRSP[gl_InstanceID].w) + Y * cos(gRSP[gl_InstanceID].w) + gCenter.y;
 	}
 	
-	FinalPos.x *= RSP[gl_InstanceID].z;
-	FinalPos.y *= RSP[gl_InstanceID].z;
+	FinalPos.x *= gRSP[gl_InstanceID].z;
+	FinalPos.y *= gRSP[gl_InstanceID].z;
 		
-	FinalPos.x += RSP[gl_InstanceID].x;
-	FinalPos.y += RSP[gl_InstanceID].y;
+	FinalPos.x += gRSP[gl_InstanceID].x;
+	FinalPos.y += gRSP[gl_InstanceID].y;
 
-	gl_Position = vec4(Pos * vec4(FinalPos, 0.0, 1.0), 0.0, 1.0);
+	gl_Position = vec4(gPos * vec4(FinalPos, 0.0, 1.0), 0.0, 1.0);
 	texCoord = inVertexTexCoord;
 	vertColor = inVertexColor;
 }

data/shader/text.frag

@@ -1,8 +1,8 @@
-uniform sampler2D textSampler;
-uniform sampler2D textOutlineSampler;
+uniform sampler2D gTextSampler;
+uniform sampler2D gTextOutlineSampler;
 
-uniform vec4 vertColor;
-uniform vec4 vertOutlineColor;
+uniform vec4 gVertColor;
+uniform vec4 gVertOutlineColor;
 
 noperspective in vec2 texCoord;
 noperspective in vec4 outVertColor;
@@ -10,8 +10,8 @@ noperspective in vec4 outVertColor;
 out vec4 FragClr;
 void main()
 {
-	vec4 textColor = vertColor * outVertColor * texture(textSampler, texCoord);
-	vec4 textOutlineTex = vertOutlineColor * texture(textOutlineSampler, texCoord);
+	vec4 textColor = gVertColor * outVertColor * texture(gTextSampler, texCoord);
+	vec4 textOutlineTex = gVertOutlineColor * texture(gTextOutlineSampler, texCoord);
 	
 	// ratio between the two textures
 	float OutlineBlend = (1.0 - textColor.a);	
@@ -29,10 +29,6 @@ void main()
 	
 	float RealAlpha = (textOutlineFrag.a + textColor.a);
 	
-	// discard transparent fragments
-	if(RealAlpha == 0.0)
-		discard;
-	
 	// simply add the color we will loose through blending
 	FragClr = vec4(finalFragColor / RealAlpha, RealAlpha);
 }

data/shader/text.vert

@@ -2,16 +2,16 @@ layout (location = 0) in vec2 inVertex;
 layout (location = 1) in vec2 inVertexTexCoord;
 layout (location = 2) in vec4 inVertexColor;
 
-uniform mat4x2 Pos;
-uniform float textureSize;
+uniform mat4x2 gPos;
+uniform float gTextureSize;
 
 noperspective out vec2 texCoord;
 noperspective out vec4 outVertColor;
 
 void main()
 {
-	gl_Position = vec4(Pos * vec4(inVertex, 0.0, 1.0), 0.0, 1.0);
+	gl_Position = vec4(gPos * vec4(inVertex, 0.0, 1.0), 0.0, 1.0);
 
-	texCoord = vec2(inVertexTexCoord.x / textureSize, inVertexTexCoord.y / textureSize);
+	texCoord = vec2(inVertexTexCoord.x / gTextureSize, inVertexTexCoord.y / gTextureSize);
 	outVertColor = inVertexColor;
 }

src/engine/client/backend_sdl.cpp

@@ -335,6 +335,11 @@ void *CCommandProcessorFragment_OpenGL::Resize(int Width, int Height, int NewWid
 	return pTmpData;
 }
 
+bool CCommandProcessorFragment_OpenGL::IsTexturedState(const CCommandBuffer::SState &State)
+{
+	return State.m_Texture >= 0 && State.m_Texture < CCommandBuffer::MAX_TEXTURES;
+}
+
 void CCommandProcessorFragment_OpenGL::SetState(const CCommandBuffer::SState &State, bool Use2DArrayTextures)
 {
 	// blend
@@ -387,7 +392,7 @@ void CCommandProcessorFragment_OpenGL::SetState(const CCommandBuffer::SState &St
 	}
 
 	// texture
-	if(State.m_Texture >= 0 && State.m_Texture < CCommandBuffer::MAX_TEXTURES)
+	if(IsTexturedState(State))
 	{
 		if(!Use2DArrayTextures)
 		{
@@ -1009,7 +1014,7 @@ void CCommandProcessorFragment_OpenGL2::SetState(const CCommandBuffer::SState &S
 	}
 
 	// texture
-	if(State.m_Texture >= 0 && State.m_Texture < CCommandBuffer::MAX_TEXTURES)
+	if(IsTexturedState(State))
 	{
 		int Slot = 0;
 		if(m_UseMultipleTextureUnits)
@@ -1063,14 +1068,6 @@ void CCommandProcessorFragment_OpenGL2::SetState(const CCommandBuffer::SState &S
 				}
 			}
 		}
-		if(pProgram->m_LocIsTextured != -1)
-		{
-			if(pProgram->m_LastIsTextured != 1)
-			{
-				pProgram->SetUniform(pProgram->m_LocIsTextured, 1);
-				pProgram->m_LastIsTextured = 1;
-			}
-		}
 
 		if(pProgram->m_LastTextureSampler != Slot)
 		{
@@ -1102,17 +1099,6 @@ void CCommandProcessorFragment_OpenGL2::SetState(const CCommandBuffer::SState &S
 			m_aTextures[State.m_Texture].m_LastWrapMode = State.m_WrapMode;
 		}
 	}
-	else
-	{
-		if(pProgram->m_LocIsTextured != -1)
-		{
-			if(pProgram->m_LastIsTextured != 0)
-			{
-				pProgram->SetUniform(pProgram->m_LocIsTextured, 0);
-				pProgram->m_LastIsTextured = 0;
-			}
-		}
-	}
 
 	if(pProgram->m_LastScreen[0] != State.m_ScreenTL.x || pProgram->m_LastScreen[1] != State.m_ScreenTL.y || pProgram->m_LastScreen[2] != State.m_ScreenBR.x || pProgram->m_LastScreen[3] != State.m_ScreenBR.y)
 	{
@@ -1616,7 +1602,7 @@ void CCommandProcessorFragment_OpenGL2::Cmd_RenderTex3D(const CCommandBuffer::SC
 	if(m_HasShaders)
 	{
 		CGLSLPrimitiveProgram *pProgram = NULL;
-		if(pCommand->m_State.m_Texture >= 0 && pCommand->m_State.m_Texture < CCommandBuffer::MAX_TEXTURES)
+		if(IsTexturedState(pCommand->m_State))
 		{
 			pProgram = m_pPrimitive3DProgramTextured;
 		}
@@ -1861,7 +1847,7 @@ void CCommandProcessorFragment_OpenGL2::RenderBorderTileEmulation(SBufferContain
 	if(m_HasShaders)
 	{
 		CGLSLPrimitiveProgram *pProgram = NULL;
-		if(State.m_Texture >= 0 && State.m_Texture < CCommandBuffer::MAX_TEXTURES)
+		if(IsTexturedState(State))
 		{
 			pProgram = m_pPrimitive3DProgramTextured;
 		}
@@ -1946,7 +1932,7 @@ void CCommandProcessorFragment_OpenGL2::RenderBorderTileLineEmulation(SBufferCon
 	if(m_HasShaders)
 	{
 		CGLSLPrimitiveProgram *pProgram = NULL;
-		if(State.m_Texture >= 0 && State.m_Texture < CCommandBuffer::MAX_TEXTURES)
+		if(IsTexturedState(State))
 		{
 			pProgram = m_pPrimitive3DProgramTextured;
 		}
@@ -2065,7 +2051,7 @@ void CCommandProcessorFragment_OpenGL2::Cmd_RenderTileLayer(const CCommandBuffer
 	if(m_HasShaders)
 	{
 		CGLSLTileProgram *pProgram = NULL;
-		if(pCommand->m_State.m_Texture >= 0 && pCommand->m_State.m_Texture < CCommandBuffer::MAX_TEXTURES)
+		if(IsTexturedState(pCommand->m_State))
 		{
 			pProgram = m_pTileProgramTextured;
 		}
@@ -2192,6 +2178,37 @@ void CCommandProcessorFragment_OpenGL3_3::UseProgram(CGLSLTWProgram *pProgram)
 	}
 }
 
+void CCommandProcessorFragment_OpenGL3_3::InitPrimExProgram(CGLSLPrimitiveExProgram *pProgram, CGLSLCompiler *pCompiler, IStorage *pStorage, bool Textured, bool Rotationless)
+{
+	CGLSL PrimitiveVertexShader;
+	CGLSL PrimitiveFragmentShader;
+	if(Textured)
+		pCompiler->AddDefine("TW_TEXTURED", "");
+	if(Rotationless)
+		pCompiler->AddDefine("TW_ROTATIONLESS", "");
+	PrimitiveVertexShader.LoadShader(pCompiler, pStorage, "shader/primex.vert", GL_VERTEX_SHADER);
+	PrimitiveFragmentShader.LoadShader(pCompiler, pStorage, "shader/primex.frag", GL_FRAGMENT_SHADER);
+	if(Textured || Rotationless)
+		pCompiler->ClearDefines();
+
+	pProgram->CreateProgram();
+	pProgram->AddShader(&PrimitiveVertexShader);
+	pProgram->AddShader(&PrimitiveFragmentShader);
+	pProgram->LinkProgram();
+
+	UseProgram(pProgram);
+
+	pProgram->m_LocPos = pProgram->GetUniformLoc("gPos");
+	pProgram->m_LocTextureSampler = pProgram->GetUniformLoc("gTextureSampler");
+	pProgram->m_LocRotation = pProgram->GetUniformLoc("gRotation");
+	pProgram->m_LocCenter = pProgram->GetUniformLoc("gCenter");
+	pProgram->m_LocVertciesColor = pProgram->GetUniformLoc("gVerticesColor");
+
+	pProgram->SetUniform(pProgram->m_LocRotation, 0.0f);
+	float Center[2] = {0.f, 0.f};
+	pProgram->SetUniformVec2(pProgram->m_LocCenter, 1, Center);
+}
+
 void CCommandProcessorFragment_OpenGL3_3::Cmd_Init(const SCommand_Init *pCommand)
 {
 	m_OpenGLTextureLodBIAS = g_Config.m_GfxOpenGLTextureLODBIAS;
@@ -2215,6 +2232,7 @@ void CCommandProcessorFragment_OpenGL3_3::Cmd_Init(const SCommand_Init *pCommand
 	m_LastBlendMode = CCommandBuffer::BLEND_ALPHA;
 	m_LastClipEnable = false;
 	m_pPrimitiveProgram = new CGLSLPrimitiveProgram;
+	m_pPrimitiveProgramTextured = new CGLSLPrimitiveProgram;
 	m_pTileProgram = new CGLSLTileProgram;
 	m_pTileProgramTextured = new CGLSLTileProgram;
 	m_pPrimitive3DProgram = new CGLSLPrimitiveProgram;
@@ -2228,6 +2246,8 @@ void CCommandProcessorFragment_OpenGL3_3::Cmd_Init(const SCommand_Init *pCommand
 	m_pTextProgram = new CGLSLTextProgram;
 	m_pPrimitiveExProgram = new CGLSLPrimitiveExProgram;
 	m_pPrimitiveExProgramTextured = new CGLSLPrimitiveExProgram;
+	m_pPrimitiveExProgramRotationless = new CGLSLPrimitiveExProgram;
+	m_pPrimitiveExProgramTexturedRotationless = new CGLSLPrimitiveExProgram;
 	m_pSpriteProgramMultiple = new CGLSLSpriteMultipleProgram;
 	m_LastProgramID = 0;
 
@@ -2251,9 +2271,26 @@ void CCommandProcessorFragment_OpenGL3_3::Cmd_Init(const SCommand_Init *pCommand
 
 		UseProgram(m_pPrimitiveProgram);
 
-		m_pPrimitiveProgram->m_LocPos = m_pPrimitiveProgram->GetUniformLoc("Pos");
-		m_pPrimitiveProgram->m_LocIsTextured = m_pPrimitiveProgram->GetUniformLoc("isTextured");
-		m_pPrimitiveProgram->m_LocTextureSampler = m_pPrimitiveProgram->GetUniformLoc("textureSampler");
+		m_pPrimitiveProgram->m_LocPos = m_pPrimitiveProgram->GetUniformLoc("gPos");
+		m_pPrimitiveProgram->m_LocTextureSampler = m_pPrimitiveProgram->GetUniformLoc("gTextureSampler");
+	}
+	{
+		CGLSL PrimitiveVertexShader;
+		CGLSL PrimitiveFragmentShader;
+		ShaderCompiler.AddDefine("TW_TEXTURED", "");
+		PrimitiveVertexShader.LoadShader(&ShaderCompiler, pCommand->m_pStorage, "shader/prim.vert", GL_VERTEX_SHADER);
+		PrimitiveFragmentShader.LoadShader(&ShaderCompiler, pCommand->m_pStorage, "shader/prim.frag", GL_FRAGMENT_SHADER);
+		ShaderCompiler.ClearDefines();
+
+		m_pPrimitiveProgramTextured->CreateProgram();
+		m_pPrimitiveProgramTextured->AddShader(&PrimitiveVertexShader);
+		m_pPrimitiveProgramTextured->AddShader(&PrimitiveFragmentShader);
+		m_pPrimitiveProgramTextured->LinkProgram();
+
+		UseProgram(m_pPrimitiveProgramTextured);
+
+		m_pPrimitiveProgramTextured->m_LocPos = m_pPrimitiveProgramTextured->GetUniformLoc("gPos");
+		m_pPrimitiveProgramTextured->m_LocTextureSampler = m_pPrimitiveProgramTextured->GetUniformLoc("gTextureSampler");
 	}
 
 	{
@@ -2471,65 +2508,18 @@ void CCommandProcessorFragment_OpenGL3_3::Cmd_Init(const SCommand_Init *pCommand
 
 		UseProgram(m_pTextProgram);
 
-		m_pTextProgram->m_LocPos = m_pTextProgram->GetUniformLoc("Pos");
-		m_pTextProgram->m_LocIsTextured = -1;
+		m_pTextProgram->m_LocPos = m_pTextProgram->GetUniformLoc("gPos");
 		m_pTextProgram->m_LocTextureSampler = -1;
-		m_pTextProgram->m_LocTextSampler = m_pTextProgram->GetUniformLoc("textSampler");
-		m_pTextProgram->m_LocTextOutlineSampler = m_pTextProgram->GetUniformLoc("textOutlineSampler");
-		m_pTextProgram->m_LocColor = m_pTextProgram->GetUniformLoc("vertColor");
-		m_pTextProgram->m_LocOutlineColor = m_pTextProgram->GetUniformLoc("vertOutlineColor");
-		m_pTextProgram->m_LocTextureSize = m_pTextProgram->GetUniformLoc("textureSize");
-	}
-	{
-		CGLSL PrimitiveVertexShader;
-		CGLSL PrimitiveFragmentShader;
-		PrimitiveVertexShader.LoadShader(&ShaderCompiler, pCommand->m_pStorage, "shader/primex.vert", GL_VERTEX_SHADER);
-		PrimitiveFragmentShader.LoadShader(&ShaderCompiler, pCommand->m_pStorage, "shader/primex.frag", GL_FRAGMENT_SHADER);
-
-		m_pPrimitiveExProgram->CreateProgram();
-		m_pPrimitiveExProgram->AddShader(&PrimitiveVertexShader);
-		m_pPrimitiveExProgram->AddShader(&PrimitiveFragmentShader);
-		m_pPrimitiveExProgram->LinkProgram();
-
-		UseProgram(m_pPrimitiveExProgram);
-
-		m_pPrimitiveExProgram->m_LocPos = m_pPrimitiveExProgram->GetUniformLoc("gPos");
-		m_pPrimitiveExProgram->m_LocIsTextured = -1;
-		m_pPrimitiveExProgram->m_LocTextureSampler = -1;
-		m_pPrimitiveExProgram->m_LocRotation = m_pPrimitiveExProgram->GetUniformLoc("gRotation");
-		m_pPrimitiveExProgram->m_LocCenter = m_pPrimitiveExProgram->GetUniformLoc("gCenter");
-		m_pPrimitiveExProgram->m_LocVertciesColor = m_pPrimitiveExProgram->GetUniformLoc("gVerticesColor");
-
-		m_pPrimitiveExProgram->SetUniform(m_pPrimitiveExProgram->m_LocRotation, 0.0f);
-		float Center[2] = {0.f, 0.f};
-		m_pPrimitiveExProgram->SetUniformVec2(m_pPrimitiveExProgram->m_LocCenter, 1, Center);
-	}
-	{
-		CGLSL PrimitiveVertexShader;
-		CGLSL PrimitiveFragmentShader;
-		ShaderCompiler.AddDefine("TW_TEXTURED", "");
-		PrimitiveVertexShader.LoadShader(&ShaderCompiler, pCommand->m_pStorage, "shader/primex.vert", GL_VERTEX_SHADER);
-		PrimitiveFragmentShader.LoadShader(&ShaderCompiler, pCommand->m_pStorage, "shader/primex.frag", GL_FRAGMENT_SHADER);
-		ShaderCompiler.ClearDefines();
-
-		m_pPrimitiveExProgramTextured->CreateProgram();
-		m_pPrimitiveExProgramTextured->AddShader(&PrimitiveVertexShader);
-		m_pPrimitiveExProgramTextured->AddShader(&PrimitiveFragmentShader);
-		m_pPrimitiveExProgramTextured->LinkProgram();
-
-		UseProgram(m_pPrimitiveExProgramTextured);
-
-		m_pPrimitiveExProgramTextured->m_LocPos = m_pPrimitiveExProgramTextured->GetUniformLoc("gPos");
-		m_pPrimitiveExProgramTextured->m_LocIsTextured = -1;
-		m_pPrimitiveExProgramTextured->m_LocTextureSampler = m_pPrimitiveExProgramTextured->GetUniformLoc("gTextureSampler");
-		m_pPrimitiveExProgramTextured->m_LocRotation = m_pPrimitiveExProgramTextured->GetUniformLoc("gRotation");
-		m_pPrimitiveExProgramTextured->m_LocCenter = m_pPrimitiveExProgramTextured->GetUniformLoc("gCenter");
-		m_pPrimitiveExProgramTextured->m_LocVertciesColor = m_pPrimitiveExProgramTextured->GetUniformLoc("gVerticesColor");
-
-		m_pPrimitiveExProgramTextured->SetUniform(m_pPrimitiveExProgramTextured->m_LocRotation, 0.0f);
-		float Center[2] = {0.f, 0.f};
-		m_pPrimitiveExProgramTextured->SetUniformVec2(m_pPrimitiveExProgramTextured->m_LocCenter, 1, Center);
+		m_pTextProgram->m_LocTextSampler = m_pTextProgram->GetUniformLoc("gTextSampler");
+		m_pTextProgram->m_LocTextOutlineSampler = m_pTextProgram->GetUniformLoc("gTextOutlineSampler");
+		m_pTextProgram->m_LocColor = m_pTextProgram->GetUniformLoc("gVertColor");
+		m_pTextProgram->m_LocOutlineColor = m_pTextProgram->GetUniformLoc("gVertOutlineColor");
+		m_pTextProgram->m_LocTextureSize = m_pTextProgram->GetUniformLoc("gTextureSize");
 	}
+	InitPrimExProgram(m_pPrimitiveExProgram, &ShaderCompiler, pCommand->m_pStorage, false, false);
+	InitPrimExProgram(m_pPrimitiveExProgramTextured, &ShaderCompiler, pCommand->m_pStorage, true, false);
+	InitPrimExProgram(m_pPrimitiveExProgramRotationless, &ShaderCompiler, pCommand->m_pStorage, false, true);
+	InitPrimExProgram(m_pPrimitiveExProgramTexturedRotationless, &ShaderCompiler, pCommand->m_pStorage, true, true);
 	{
 		CGLSL PrimitiveVertexShader;
 		CGLSL PrimitiveFragmentShader;
@@ -2543,12 +2533,11 @@ void CCommandProcessorFragment_OpenGL3_3::Cmd_Init(const SCommand_Init *pCommand
 
 		UseProgram(m_pSpriteProgramMultiple);
 
-		m_pSpriteProgramMultiple->m_LocPos = m_pSpriteProgramMultiple->GetUniformLoc("Pos");
-		m_pSpriteProgramMultiple->m_LocIsTextured = -1;
-		m_pSpriteProgramMultiple->m_LocTextureSampler = m_pSpriteProgramMultiple->GetUniformLoc("textureSampler");
-		m_pSpriteProgramMultiple->m_LocRSP = m_pSpriteProgramMultiple->GetUniformLoc("RSP[0]");
-		m_pSpriteProgramMultiple->m_LocCenter = m_pSpriteProgramMultiple->GetUniformLoc("Center");
-		m_pSpriteProgramMultiple->m_LocVertciesColor = m_pSpriteProgramMultiple->GetUniformLoc("VerticesColor");
+		m_pSpriteProgramMultiple->m_LocPos = m_pSpriteProgramMultiple->GetUniformLoc("gPos");
+		m_pSpriteProgramMultiple->m_LocTextureSampler = m_pSpriteProgramMultiple->GetUniformLoc("gTextureSampler");
+		m_pSpriteProgramMultiple->m_LocRSP = m_pSpriteProgramMultiple->GetUniformLoc("gRSP[0]");
+		m_pSpriteProgramMultiple->m_LocCenter = m_pSpriteProgramMultiple->GetUniformLoc("gCenter");
+		m_pSpriteProgramMultiple->m_LocVertciesColor = m_pSpriteProgramMultiple->GetUniformLoc("gVerticesColor");
 
 		float Center[2] = {0.f, 0.f};
 		m_pSpriteProgramMultiple->SetUniformVec2(m_pSpriteProgramMultiple->m_LocCenter, 1, Center);
@@ -2639,6 +2628,7 @@ void CCommandProcessorFragment_OpenGL3_3::Cmd_Shutdown(const SCommand_Shutdown *
 	glUseProgram(0);
 
 	m_pPrimitiveProgram->DeleteProgram();
+	m_pPrimitiveProgramTextured->DeleteProgram();
 	m_pBorderTileProgram->DeleteProgram();
 	m_pBorderTileProgramTextured->DeleteProgram();
 	m_pBorderTileLineProgram->DeleteProgram();
@@ -2652,10 +2642,13 @@ void CCommandProcessorFragment_OpenGL3_3::Cmd_Shutdown(const SCommand_Shutdown *
 	m_pTextProgram->DeleteProgram();
 	m_pPrimitiveExProgram->DeleteProgram();
 	m_pPrimitiveExProgramTextured->DeleteProgram();
+	m_pPrimitiveExProgramRotationless->DeleteProgram();
+	m_pPrimitiveExProgramTexturedRotationless->DeleteProgram();
 	m_pSpriteProgramMultiple->DeleteProgram();
 
 	//clean up everything
 	delete m_pPrimitiveProgram;
+	delete m_pPrimitiveProgramTextured;
 	delete m_pBorderTileProgram;
 	delete m_pBorderTileProgramTextured;
 	delete m_pBorderTileLineProgram;
@@ -2669,6 +2662,8 @@ void CCommandProcessorFragment_OpenGL3_3::Cmd_Shutdown(const SCommand_Shutdown *
 	delete m_pTextProgram;
 	delete m_pPrimitiveExProgram;
 	delete m_pPrimitiveExProgramTextured;
+	delete m_pPrimitiveExProgramRotationless;
+	delete m_pPrimitiveExProgramTexturedRotationless;
 	delete m_pSpriteProgramMultiple;
 
 	glBindVertexArray(0);
@@ -2989,8 +2984,11 @@ void CCommandProcessorFragment_OpenGL3_3::UploadStreamBufferData(unsigned int Pr
 
 void CCommandProcessorFragment_OpenGL3_3::Cmd_Render(const CCommandBuffer::SCommand_Render *pCommand)
 {
-	UseProgram(m_pPrimitiveProgram);
-	SetState(pCommand->m_State, m_pPrimitiveProgram);
+	CGLSLTWProgram *pProgram = m_pPrimitiveProgram;
+	if(IsTexturedState(pCommand->m_State))
+		pProgram = m_pPrimitiveProgramTextured;
+	UseProgram(pProgram);
+	SetState(pCommand->m_State, pProgram);
 
 	UploadStreamBufferData(pCommand->m_PrimType, pCommand->m_pVertices, sizeof(CCommandBuffer::SVertex), pCommand->m_PrimCount);
 
@@ -3023,7 +3021,7 @@ void CCommandProcessorFragment_OpenGL3_3::Cmd_Render(const CCommandBuffer::SComm
 void CCommandProcessorFragment_OpenGL3_3::Cmd_RenderTex3D(const CCommandBuffer::SCommand_RenderTex3D *pCommand)
 {
 	CGLSLPrimitiveProgram *pProg = m_pPrimitive3DProgram;
-	if(pCommand->m_State.m_Texture >= 0 && pCommand->m_State.m_Texture < CCommandBuffer::MAX_TEXTURES)
+	if(IsTexturedState(pCommand->m_State))
 		pProg = m_pPrimitive3DProgramTextured;
 	UseProgram(pProg);
 	SetState(pCommand->m_State, pProg, true);
@@ -3315,7 +3313,7 @@ void CCommandProcessorFragment_OpenGL3_3::Cmd_RenderBorderTile(const CCommandBuf
 		return;
 
 	CGLSLTileProgram *pProgram = NULL;
-	if(pCommand->m_State.m_Texture >= 0 && pCommand->m_State.m_Texture < CCommandBuffer::MAX_TEXTURES)
+	if(IsTexturedState(pCommand->m_State))
 	{
 		pProgram = m_pBorderTileProgramTextured;
 	}
@@ -3351,7 +3349,7 @@ void CCommandProcessorFragment_OpenGL3_3::Cmd_RenderBorderTileLine(const CComman
 		return;
 
 	CGLSLTileProgram *pProgram = NULL;
-	if(pCommand->m_State.m_Texture >= 0 && pCommand->m_State.m_Texture < CCommandBuffer::MAX_TEXTURES)
+	if(IsTexturedState(pCommand->m_State))
 	{
 		pProgram = m_pBorderTileLineProgramTextured;
 	}
@@ -3390,7 +3388,7 @@ void CCommandProcessorFragment_OpenGL3_3::Cmd_RenderTileLayer(const CCommandBuff
 	}
 
 	CGLSLTileProgram *pProgram = NULL;
-	if(pCommand->m_State.m_Texture >= 0 && pCommand->m_State.m_Texture < CCommandBuffer::MAX_TEXTURES)
+	if(IsTexturedState(pCommand->m_State))
 	{
 		pProgram = m_pTileProgramTextured;
 	}
@@ -3431,7 +3429,7 @@ void CCommandProcessorFragment_OpenGL3_3::Cmd_RenderQuadLayer(const CCommandBuff
 	}
 
 	CGLSLQuadProgram *pProgram = NULL;
-	if(pCommand->m_State.m_Texture >= 0 && pCommand->m_State.m_Texture < CCommandBuffer::MAX_TEXTURES)
+	if(IsTexturedState(pCommand->m_State))
 	{
 		pProgram = m_pQuadProgramTextured;
 	}
@@ -3628,8 +3626,11 @@ void CCommandProcessorFragment_OpenGL3_3::Cmd_RenderQuadContainer(const CCommand
 		BufferContainer.m_LastIndexBufferBound = m_QuadDrawIndexBufferID;
 	}
 
-	UseProgram(m_pPrimitiveProgram);
-	SetState(pCommand->m_State, m_pPrimitiveProgram);
+	CGLSLTWProgram *pProgram = m_pPrimitiveProgram;
+	if(IsTexturedState(pCommand->m_State))
+		pProgram = m_pPrimitiveProgramTextured;
+	UseProgram(pProgram);
+	SetState(pCommand->m_State, pProgram);
 
 	glDrawElements(GL_TRIANGLES, pCommand->m_DrawNum, GL_UNSIGNED_INT, pCommand->m_pOffset);
 }
@@ -3657,10 +3658,18 @@ void CCommandProcessorFragment_OpenGL3_3::Cmd_RenderQuadContainerEx(const CComma
 		BufferContainer.m_LastIndexBufferBound = m_QuadDrawIndexBufferID;
 	}
 
-	CGLSLPrimitiveExProgram *pProgram = m_pPrimitiveExProgram;
-	if(pCommand->m_State.m_Texture >= 0 && pCommand->m_State.m_Texture < CCommandBuffer::MAX_TEXTURES)
+	CGLSLPrimitiveExProgram *pProgram = m_pPrimitiveExProgramRotationless;
+	if(IsTexturedState(pCommand->m_State))
 	{
+		if(pCommand->m_Rotation != 0.0f)
 			pProgram = m_pPrimitiveExProgramTextured;
+		else
+			pProgram = m_pPrimitiveExProgramTexturedRotationless;
+	}
+	else
+	{
+		if(pCommand->m_Rotation != 0.0f)
+			pProgram = m_pPrimitiveExProgram;
 	}
 
 	UseProgram(pProgram);

src/engine/client/backend_sdl.h

@@ -170,6 +170,7 @@ public:
 	};
 
 protected:
+	bool IsTexturedState(const CCommandBuffer::SState &State);
 	void SetState(const CCommandBuffer::SState &State, bool Use2DArrayTexture = false);
 	virtual bool IsNewApi() { return false; }
 	void DestroyTexture(int Slot);
@@ -310,6 +311,7 @@ class CCommandProcessorFragment_OpenGL3_3 : public CCommandProcessorFragment_Ope
 	static const int m_MaxQuadsPossible = 256;
 
 	CGLSLPrimitiveProgram *m_pPrimitiveProgram;
+	CGLSLPrimitiveProgram *m_pPrimitiveProgramTextured;
 	CGLSLTileProgram *m_pBorderTileProgram;
 	CGLSLTileProgram *m_pBorderTileProgramTextured;
 	CGLSLTileProgram *m_pBorderTileLineProgram;
@@ -319,6 +321,8 @@ class CCommandProcessorFragment_OpenGL3_3 : public CCommandProcessorFragment_Ope
 	CGLSLTextProgram *m_pTextProgram;
 	CGLSLPrimitiveExProgram *m_pPrimitiveExProgram;
 	CGLSLPrimitiveExProgram *m_pPrimitiveExProgramTextured;
+	CGLSLPrimitiveExProgram *m_pPrimitiveExProgramRotationless;
+	CGLSLPrimitiveExProgram *m_pPrimitiveExProgramTexturedRotationless;
 	CGLSLSpriteMultipleProgram *m_pSpriteProgramMultiple;
 
 	GLuint m_LastProgramID;
@@ -353,6 +357,8 @@ class CCommandProcessorFragment_OpenGL3_3 : public CCommandProcessorFragment_Ope
 
 	CCommandBuffer::SColorf m_ClearColor;
 
+	void InitPrimExProgram(CGLSLPrimitiveExProgram *pProgram, class CGLSLCompiler *pCompiler, class IStorage *pStorage, bool Textured, bool Rotationless);
+
 protected:
 	static int TexFormatToNewOpenGLFormat(int TexFormat);
 	bool IsNewApi() override { return true; }

src/engine/client/opengl_sl_program.h

@@ -45,13 +45,12 @@ class CGLSLTWProgram : public CGLSLProgram
 {
 public:
 	CGLSLTWProgram() :
-		m_LocPos(-1), m_LocIsTextured(-1), m_LocTextureSampler(-1), m_LastTextureSampler(-1), m_LastIsTextured(-1)
+		m_LocPos(-1), m_LocTextureSampler(-1), m_LastTextureSampler(-1), m_LastIsTextured(-1)
 	{
 		m_LastScreen[0] = m_LastScreen[1] = m_LastScreen[2] = m_LastScreen[3] = -1.f;
 	}
 
 	int m_LocPos;
-	int m_LocIsTextured;
 	int m_LocTextureSampler;
 
 	int m_LastTextureSampler;