From 0da0dddf15f83ca74b927b0a67cf7bad92d72e32 Mon Sep 17 00:00:00 2001
From: Ryozuki <ryo@ryozuki.xyz>
Date: Wed, 8 Apr 2020 15:55:10 +0200
Subject: [PATCH] drop glu dependency

---
 CMakeLists.txt                    | 4 ++--
 src/engine/client/backend_sdl.cpp | 8 ++------
 2 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6a7232ebc..e63ca1a84 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -454,7 +454,7 @@ endif()
 
 if(TARGET_OS STREQUAL "windows")
   set(PLATFORM_CLIENT)
-  set(PLATFORM_CLIENT_LIBS opengl32 glu32 winmm)
+  set(PLATFORM_CLIENT_LIBS opengl32 winmm)
   set(PLATFORM_LIBS ws2_32) # Windows sockets
 elseif(TARGET_OS STREQUAL "mac")
   find_library(CARBON Carbon)
@@ -472,7 +472,7 @@ else()
   set(PLATFORM_CLIENT)
   find_package(OpenGL)
   find_package(X11)
-  set(PLATFORM_CLIENT_LIBS ${OPENGL_gl_LIBRARY} ${OPENGL_glu_LIBRARY} ${X11_X11_LIB})
+  set(PLATFORM_CLIENT_LIBS ${OPENGL_gl_LIBRARY} ${X11_X11_LIB})
   set(PLATFORM_CLIENT_INCLUDE_DIRS ${OPENGL_INCLUDE_DIR} ${X11_X11_INCLUDE_PATH})
   if(TARGET_OS STREQUAL "linux")
     set(PLATFORM_LIBS rt) # clock_gettime for glibc < 2.17
diff --git a/src/engine/client/backend_sdl.cpp b/src/engine/client/backend_sdl.cpp
index 31bf253f7..9d6b0b953 100644
--- a/src/engine/client/backend_sdl.cpp
+++ b/src/engine/client/backend_sdl.cpp
@@ -15,12 +15,7 @@
 #include <cmath>
 #include "SDL.h"
 #include "SDL_syswm.h"
-#if defined(CONF_PLATFORM_MACOSX)
-#include "OpenGL/glu.h"
-#else
 #include "SDL_opengl.h"
-#include "GL/glu.h"
-#endif
 
 #if defined(SDL_VIDEO_DRIVER_X11)
 	#include <X11/Xutil.h>
@@ -353,7 +348,8 @@ void CCommandProcessorFragment_OpenGL::Cmd_Texture_Create(const CCommandBuffer::
 	{
 		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
-		gluBuild2DMipmaps(GL_TEXTURE_2D, StoreOglformat, Width, Height, Oglformat, GL_UNSIGNED_BYTE, pTexData);
+		glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
+		glTexImage2D(GL_TEXTURE_2D, 0, StoreOglformat, Width, Height, 0, Oglformat, GL_UNSIGNED_BYTE, pTexData);
 	}
 
 	// calculate memory usage