Merge pull request #48 from AGraber/gl3_glad

Add glad (OpenGL function loader) support

.appveyor.yml

@@ -1,8 +1,6 @@
 image: Visual Studio 2017
 configuration: Release
 environment:
-  GLEW_BASE: glew-2.1.0
-  GLEW_URL: https://github.com/nigels-com/glew/releases/download/glew-2.1.0/%GLEW_BASE%-win32.zip
   GLFW_BASE: glfw-3.2.1.bin.WIN64
   GLFW_URL: https://github.com/glfw/glfw/releases/download/3.2.1/%GLFW_BASE%.zip
   SDL2_BASE: SDL2-devel-2.0.8-VC
@@ -20,8 +18,6 @@ environment:
 install:
   - appveyor DownloadFile %GLFW_URL% -FileName "%APPVEYOR_BUILD_FOLDER%/%GLFW_BASE%.zip"
   - 7z x "%APPVEYOR_BUILD_FOLDER%/%GLFW_BASE%.zip"
-  - appveyor DownloadFile %GLEW_URL% -FileName "%APPVEYOR_BUILD_FOLDER%/%GLEW_BASE%.zip"
-  - 7z x "%APPVEYOR_BUILD_FOLDER%/%GLEW_BASE%.zip"
   - appveyor DownloadFile %SDL2_URL% -FileName "%APPVEYOR_BUILD_FOLDER%/%SDL2_BASE%.zip"
   - 7z x "%APPVEYOR_BUILD_FOLDER%/%SDL2_BASE%.zip"
   - appveyor DownloadFile %PREMAKE5_URL% -FileName "%APPVEYOR_BUILD_FOLDER%/premake5.zip"
@@ -30,7 +26,7 @@ install:
 before_build:
   - mkdir "%APPVEYOR_BUILD_FOLDER%/build"
   - cd "%APPVEYOR_BUILD_FOLDER%"
-  - premake5 vs2017 --glewdir=%APPVEYOR_BUILD_FOLDER%/%GLEW_BASE% --glfwdir64=%APPVEYOR_BUILD_FOLDER%/%GLFW_BASE% --sdl2dir=%APPVEYOR_BUILD_FOLDER%/%SDL2_DIRAME% %PREMAKE5_EXTRA_ARGS%
+  - premake5 vs2017 --glfwdir64=%APPVEYOR_BUILD_FOLDER%/%GLFW_BASE% --sdl2dir=%APPVEYOR_BUILD_FOLDER%/%SDL2_DIRAME% %PREMAKE5_EXTRA_ARGS%
 build:
   project: c:\projects\librw\build\librw.sln
   verbosity: minimal

Dockerfile

@@ -28,7 +28,6 @@ RUN mkdir -p "$PS2DEV" "$PS2SDK" \
         wget \
         zip \
         zlib1g-dev \
-        libglew-dev \
         libglfw3-dev \
         libsdl2-dev \
     && git clone -b $TOOLCHAIN_GIT_BRANCH $TOOLCHAIN_GIT_URL /toolchain \

cmake/librw-config.cmake.in

@@ -10,7 +10,6 @@ if(LIBRW_PLATFORM_GL3)
 
     set(OpenGL_GL_PREFERENCE GLVND)
     find_package(OpenGL REQUIRED)
-    find_package(GLEW REQUIRED)
     if(LIBRW_GL3_GFXLIB STREQUAL "GLFW")
         find_package(glfw3 REQUIRED)
     elseif(LIBRW_GL3_GFXLIB STREQUAL "SDL2")

conanfile.py

@@ -54,7 +54,6 @@ class LibrwConan(ConanFile):
 
     def requirements(self):
         if self.options.platform == "gl3":
-            self.requires("glew/2.1.0")
             if self.options.gl3_gfxlib == "glfw":
                 self.requires("glfw/3.3.2")
             elif self.options.gl3_gfxlib == "sdl2":

premake5.lua

@@ -1,10 +1,3 @@
-newoption {
-	trigger     = "glewdir",
-	value       = "PATH",
-	description = "Directory of GLEW",
-	default     = "../glew-2.1.0",
-}
-
 newoption {
 	trigger		= "gfxlib",
 	value       = "LIBRARY",
@@ -95,8 +88,6 @@ workspace "librw"
 		system "linux"
 
 	filter { "platforms:win*gl3" }
-		defines { "GLEW_STATIC" }
-		includedirs { path.join(_OPTIONS["glewdir"], "include") }
 		includedirs { path.join(_OPTIONS["sdl2dir"], "include") }
 	filter { "platforms:win-x86-gl3" }
 		includedirs { path.join(_OPTIONS["glfwdir32"], "include") }
@@ -123,6 +114,8 @@ project "librw"
 	defines { "LODEPNG_NO_COMPILE_CPP" }
 	files { "src/*.*" }
 	files { "src/*/*.*" }
+	filter { "platforms:*gl3" }
+		files { "src/gl/glad/*.*" }
 
 project "dumprwtree"
 	kind "ConsoleApp"
@@ -135,23 +128,16 @@ project "dumprwtree"
 
 function findlibs()
 	filter { "platforms:linux*gl3" }
-		links { "GL", "GLEW" }
+		links { "GL" }
 		if _OPTIONS["gfxlib"] == "glfw" then
 			links { "glfw" }
 		else
 			links { "SDL2" }
 		end
-	filter { "platforms:win*gl3", "action:vs*" }
-		defines { "GLEW_STATIC" }
-		links { "glew32s" }
-	filter { "platforms:win*gl3", "action:not vs*" }
-		links { "glew32" }
 	filter { "platforms:win-amd64-gl3" }
-		libdirs { path.join(_OPTIONS["glewdir"], "lib/Release/x64") }
 		libdirs { path.join(_OPTIONS["glfwdir64"], "lib-vc2015") }
 		libdirs { path.join(_OPTIONS["sdl2dir"], "lib/x64") }
 	filter { "platforms:win-x86-gl3" }
-		libdirs { path.join(_OPTIONS["glewdir"], "lib/Release/Win32") }
 		libdirs { path.join(_OPTIONS["glfwdir32"], "lib-vc2015") }
 		libdirs { path.join(_OPTIONS["sdl2dir"], "lib/x86") }
 	filter { "platforms:win*gl3" }

src/CMakeLists.txt

@@ -78,6 +78,7 @@ add_library(librw
     gl/rwgl3shader.h
     gl/rwwdgl.h
     gl/wdgl.cpp
+    gl/glad/glad.c
 
     lodepng/lodepng.h
     lodepng/lodepng.cpp
@@ -147,12 +148,10 @@ set_target_properties(librw
 if(LIBRW_PLATFORM_GL3)
     set(OpenGL_GL_PREFERENCE GLVND)
     find_package(OpenGL REQUIRED)
-    find_package(GLEW REQUIRED)
 
     target_link_libraries(librw
         PUBLIC
             OpenGL::GL
-            GLEW::GLEW
     )
     if (LIBRW_GL3_GFXLIB STREQUAL "GLFW")
         find_package(glfw3 REQUIRED)

src/gl/gl3.cpp

@@ -9,9 +9,7 @@
 #include "../rwpipeline.h"
 #include "../rwobjects.h"
 #include "../rwengine.h"
-#ifdef RW_OPENGL
+
-#include <GL/glew.h>
-#endif
 #include "rwgl3.h"
 #include "rwgl3shader.h"
 

src/gl/gl3device.cpp

@@ -11,12 +11,7 @@
 #include "../rwpipeline.h"
 #include "../rwobjects.h"
 #ifdef RW_OPENGL
-#include <GL/glew.h>
+
-#ifdef LIBRW_SDL2
-#include <SDL.h>
-#else
-#include <GLFW/glfw3.h>
-#endif
 #include "rwgl3.h"
 #include "rwgl3shader.h"
 #include "rwgl3impl.h"
@@ -1541,7 +1536,6 @@ static struct {
 static int
 startSDL2(void)
 {
-	GLenum status;
 	SDL_Window *win;
 	SDL_GLContext ctx;
 	DisplayMode *mode;
@@ -1576,23 +1570,16 @@ startSDL2(void)
 		return 0;
 	}
 	ctx = SDL_GL_CreateContext(win);
+
+	if (!gladLoadGLLoader((GLADloadproc) SDL_GL_GetProcAddress)){
+		RWERROR((ERR_GENERAL, "gladLoadGLLoader failed"));
+		SDL_GL_DeleteContext(ctx);
+		SDL_DestroyWindow(win);
+		return 0;
+	}
+
 	printf("OpenGL version: %s\n", glGetString(GL_VERSION));
 
-	/* Init GLEW */
-	glewExperimental = GL_TRUE;
-	status = glewInit();
-	if(status != GLEW_OK){
-		RWERROR((ERR_GENERAL, glewGetErrorString(status)));
-		SDL_GL_DeleteContext(ctx);
-		SDL_DestroyWindow(win);
-		return 0;
-	}
-	if(!GLEW_VERSION_3_3){
-		RWERROR((ERR_GENERAL, "OpenGL 3.3 needed"));
-		SDL_GL_DeleteContext(ctx);
-		SDL_DestroyWindow(win);
-		return 0;
-	}
 	glGlobals.window = win;
 	glGlobals.glcontext = ctx;
 	*glGlobals.pWindow = win;
@@ -1712,7 +1699,6 @@ static struct {
 static int
 startGLFW(void)
 {
-	GLenum status;
 	GLFWwindow *win;
 	DisplayMode *mode;
 
@@ -1746,21 +1732,16 @@ startGLFW(void)
 		return 0;
 	}
 	glfwMakeContextCurrent(win);
+
+	/* Init GLAD */
+	if(!gladLoadGLLoader((GLADloadproc) glfwGetProcAddress)) {
+		RWERROR((ERR_GENERAL, "gladLoadGLLoader failed"));
+		glfwDestroyWindow(win);
+		return 0;
+	}
+
 	printf("OpenGL version: %s\n", glGetString(GL_VERSION));
 
-	/* Init GLEW */
-	glewExperimental = GL_TRUE;
-	status = glewInit();
-	if(status != GLEW_OK){
-		RWERROR((ERR_GENERAL, glewGetErrorString(status)));
-		glfwDestroyWindow(win);
-		return 0;
-	}
-	if(!GLEW_VERSION_3_3){
-		RWERROR((ERR_GENERAL, "OpenGL 3.3 needed"));
-		glfwDestroyWindow(win);
-		return 0;
-	}
 	glGlobals.window = win;
 	*glGlobals.pWindow = win;
 	glGlobals.presentWidth = 0;

src/gl/gl3immed.cpp

@@ -11,7 +11,6 @@
 #include "../rwobjects.h"
 #include "../rwengine.h"
 #ifdef RW_OPENGL
-#include <GL/glew.h>
 #include "rwgl3.h"
 #include "rwgl3impl.h"
 #include "rwgl3shader.h"

src/gl/gl3matfx.cpp

@@ -12,9 +12,7 @@
 #include "../rwobjects.h"
 #include "../rwanim.h"
 #include "../rwplugins.h"
-#ifdef RW_OPENGL
+
-#include <GL/glew.h>
-#endif
 #include "rwgl3.h"
 #include "rwgl3shader.h"
 #include "rwgl3plg.h"

src/gl/gl3pipe.cpp

@@ -9,9 +9,7 @@
 #include "../rwpipeline.h"
 #include "../rwobjects.h"
 #include "../rwengine.h"
-#ifdef RW_OPENGL
+
-#include <GL/glew.h>
-#endif
 #include "rwgl3.h"
 #include "rwgl3shader.h"
 

src/gl/gl3raster.cpp

@@ -9,9 +9,7 @@
 #include "../rwpipeline.h"
 #include "../rwobjects.h"
 #include "../rwengine.h"
-#ifdef RW_OPENGL
+
-#include <GL/glew.h>
-#endif
 #include "rwgl3.h"
 #include "rwgl3shader.h"
 #include "rwgl3impl.h"

src/gl/gl3render.cpp

@@ -10,7 +10,6 @@
 #include "../rwpipeline.h"
 #include "../rwobjects.h"
 #ifdef RW_OPENGL
-#include <GL/glew.h>
 #include "rwgl3.h"
 #include "rwgl3shader.h"
 

src/gl/gl3shader.cpp

@@ -10,7 +10,6 @@
 #include "../rwobjects.h"
 #include "../rwengine.h"
 #ifdef RW_OPENGL
-#include <GL/glew.h>
 #include "rwgl3.h"
 #include "rwgl3shader.h"
 

src/gl/gl3skin.cpp

@@ -12,9 +12,7 @@
 #include "../rwobjects.h"
 #include "../rwanim.h"
 #include "../rwplugins.h"
-#ifdef RW_OPENGL
+
-#include <GL/glew.h>
-#endif
 #include "rwgl3.h"
 #include "rwgl3shader.h"
 #include "rwgl3plg.h"

src/gl/glad/khrplatform.h

@@ -0,0 +1,290 @@
+#ifndef __khrplatform_h_
+#define __khrplatform_h_
+
+/*
+** Copyright (c) 2008-2018 The Khronos Group Inc.
+**
+** Permission is hereby granted, free of charge, to any person obtaining a
+** copy of this software and/or associated documentation files (the
+** "Materials"), to deal in the Materials without restriction, including
+** without limitation the rights to use, copy, modify, merge, publish,
+** distribute, sublicense, and/or sell copies of the Materials, and to
+** permit persons to whom the Materials are furnished to do so, subject to
+** the following conditions:
+**
+** The above copyright notice and this permission notice shall be included
+** in all copies or substantial portions of the Materials.
+**
+** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
+*/
+
+/* Khronos platform-specific types and definitions.
+ *
+ * The master copy of khrplatform.h is maintained in the Khronos EGL
+ * Registry repository at https://github.com/KhronosGroup/EGL-Registry
+ * The last semantic modification to khrplatform.h was at commit ID:
+ *      67a3e0864c2d75ea5287b9f3d2eb74a745936692
+ *
+ * Adopters may modify this file to suit their platform. Adopters are
+ * encouraged to submit platform specific modifications to the Khronos
+ * group so that they can be included in future versions of this file.
+ * Please submit changes by filing pull requests or issues on
+ * the EGL Registry repository linked above.
+ *
+ *
+ * See the Implementer's Guidelines for information about where this file
+ * should be located on your system and for more details of its use:
+ *    http://www.khronos.org/registry/implementers_guide.pdf
+ *
+ * This file should be included as
+ *        #include <KHR/khrplatform.h>
+ * by Khronos client API header files that use its types and defines.
+ *
+ * The types in khrplatform.h should only be used to define API-specific types.
+ *
+ * Types defined in khrplatform.h:
+ *    khronos_int8_t              signed   8  bit
+ *    khronos_uint8_t             unsigned 8  bit
+ *    khronos_int16_t             signed   16 bit
+ *    khronos_uint16_t            unsigned 16 bit
+ *    khronos_int32_t             signed   32 bit
+ *    khronos_uint32_t            unsigned 32 bit
+ *    khronos_int64_t             signed   64 bit
+ *    khronos_uint64_t            unsigned 64 bit
+ *    khronos_intptr_t            signed   same number of bits as a pointer
+ *    khronos_uintptr_t           unsigned same number of bits as a pointer
+ *    khronos_ssize_t             signed   size
+ *    khronos_usize_t             unsigned size
+ *    khronos_float_t             signed   32 bit floating point
+ *    khronos_time_ns_t           unsigned 64 bit time in nanoseconds
+ *    khronos_utime_nanoseconds_t unsigned time interval or absolute time in
+ *                                         nanoseconds
+ *    khronos_stime_nanoseconds_t signed time interval in nanoseconds
+ *    khronos_boolean_enum_t      enumerated boolean type. This should
+ *      only be used as a base type when a client API's boolean type is
+ *      an enum. Client APIs which use an integer or other type for
+ *      booleans cannot use this as the base type for their boolean.
+ *
+ * Tokens defined in khrplatform.h:
+ *
+ *    KHRONOS_FALSE, KHRONOS_TRUE Enumerated boolean false/true values.
+ *
+ *    KHRONOS_SUPPORT_INT64 is 1 if 64 bit integers are supported; otherwise 0.
+ *    KHRONOS_SUPPORT_FLOAT is 1 if floats are supported; otherwise 0.
+ *
+ * Calling convention macros defined in this file:
+ *    KHRONOS_APICALL
+ *    KHRONOS_APIENTRY
+ *    KHRONOS_APIATTRIBUTES
+ *
+ * These may be used in function prototypes as:
+ *
+ *      KHRONOS_APICALL void KHRONOS_APIENTRY funcname(
+ *                                  int arg1,
+ *                                  int arg2) KHRONOS_APIATTRIBUTES;
+ */
+
+#if defined(__SCITECH_SNAP__) && !defined(KHRONOS_STATIC)
+#   define KHRONOS_STATIC 1
+#endif
+
+/*-------------------------------------------------------------------------
+ * Definition of KHRONOS_APICALL
+ *-------------------------------------------------------------------------
+ * This precedes the return type of the function in the function prototype.
+ */
+#if defined(KHRONOS_STATIC)
+    /* If the preprocessor constant KHRONOS_STATIC is defined, make the
+     * header compatible with static linking. */
+#   define KHRONOS_APICALL
+#elif defined(_WIN32)
+#   define KHRONOS_APICALL __declspec(dllimport)
+#elif defined (__SYMBIAN32__)
+#   define KHRONOS_APICALL IMPORT_C
+#elif defined(__ANDROID__)
+#   define KHRONOS_APICALL __attribute__((visibility("default")))
+#else
+#   define KHRONOS_APICALL
+#endif
+
+/*-------------------------------------------------------------------------
+ * Definition of KHRONOS_APIENTRY
+ *-------------------------------------------------------------------------
+ * This follows the return type of the function  and precedes the function
+ * name in the function prototype.
+ */
+#if defined(_WIN32) && !defined(_WIN32_WCE) && !defined(__SCITECH_SNAP__)
+    /* Win32 but not WinCE */
+#   define KHRONOS_APIENTRY __stdcall
+#else
+#   define KHRONOS_APIENTRY
+#endif
+
+/*-------------------------------------------------------------------------
+ * Definition of KHRONOS_APIATTRIBUTES
+ *-------------------------------------------------------------------------
+ * This follows the closing parenthesis of the function prototype arguments.
+ */
+#if defined (__ARMCC_2__)
+#define KHRONOS_APIATTRIBUTES __softfp
+#else
+#define KHRONOS_APIATTRIBUTES
+#endif
+
+/*-------------------------------------------------------------------------
+ * basic type definitions
+ *-----------------------------------------------------------------------*/
+#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(__GNUC__) || defined(__SCO__) || defined(__USLC__)
+
+
+/*
+ * Using <stdint.h>
+ */
+#include <stdint.h>
+typedef int32_t                 khronos_int32_t;
+typedef uint32_t                khronos_uint32_t;
+typedef int64_t                 khronos_int64_t;
+typedef uint64_t                khronos_uint64_t;
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+
+#elif defined(__VMS ) || defined(__sgi)
+
+/*
+ * Using <inttypes.h>
+ */
+#include <inttypes.h>
+typedef int32_t                 khronos_int32_t;
+typedef uint32_t                khronos_uint32_t;
+typedef int64_t                 khronos_int64_t;
+typedef uint64_t                khronos_uint64_t;
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+
+#elif defined(_WIN32) && !defined(__SCITECH_SNAP__)
+
+/*
+ * Win32
+ */
+typedef __int32                 khronos_int32_t;
+typedef unsigned __int32        khronos_uint32_t;
+typedef __int64                 khronos_int64_t;
+typedef unsigned __int64        khronos_uint64_t;
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+
+#elif defined(__sun__) || defined(__digital__)
+
+/*
+ * Sun or Digital
+ */
+typedef int                     khronos_int32_t;
+typedef unsigned int            khronos_uint32_t;
+#if defined(__arch64__) || defined(_LP64)
+typedef long int                khronos_int64_t;
+typedef unsigned long int       khronos_uint64_t;
+#else
+typedef long long int           khronos_int64_t;
+typedef unsigned long long int  khronos_uint64_t;
+#endif /* __arch64__ */
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+
+#elif 0
+
+/*
+ * Hypothetical platform with no float or int64 support
+ */
+typedef int                     khronos_int32_t;
+typedef unsigned int            khronos_uint32_t;
+#define KHRONOS_SUPPORT_INT64   0
+#define KHRONOS_SUPPORT_FLOAT   0
+
+#else
+
+/*
+ * Generic fallback
+ */
+#include <stdint.h>
+typedef int32_t                 khronos_int32_t;
+typedef uint32_t                khronos_uint32_t;
+typedef int64_t                 khronos_int64_t;
+typedef uint64_t                khronos_uint64_t;
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+
+#endif
+
+
+/*
+ * Types that are (so far) the same on all platforms
+ */
+typedef signed   char          khronos_int8_t;
+typedef unsigned char          khronos_uint8_t;
+typedef signed   short int     khronos_int16_t;
+typedef unsigned short int     khronos_uint16_t;
+
+/*
+ * Types that differ between LLP64 and LP64 architectures - in LLP64,
+ * pointers are 64 bits, but 'long' is still 32 bits. Win64 appears
+ * to be the only LLP64 architecture in current use.
+ */
+#ifdef _WIN64
+typedef signed   long long int khronos_intptr_t;
+typedef unsigned long long int khronos_uintptr_t;
+typedef signed   long long int khronos_ssize_t;
+typedef unsigned long long int khronos_usize_t;
+#else
+typedef signed   long  int     khronos_intptr_t;
+typedef unsigned long  int     khronos_uintptr_t;
+typedef signed   long  int     khronos_ssize_t;
+typedef unsigned long  int     khronos_usize_t;
+#endif
+
+#if KHRONOS_SUPPORT_FLOAT
+/*
+ * Float type
+ */
+typedef          float         khronos_float_t;
+#endif
+
+#if KHRONOS_SUPPORT_INT64
+/* Time types
+ *
+ * These types can be used to represent a time interval in nanoseconds or
+ * an absolute Unadjusted System Time.  Unadjusted System Time is the number
+ * of nanoseconds since some arbitrary system event (e.g. since the last
+ * time the system booted).  The Unadjusted System Time is an unsigned
+ * 64 bit value that wraps back to 0 every 584 years.  Time intervals
+ * may be either signed or unsigned.
+ */
+typedef khronos_uint64_t       khronos_utime_nanoseconds_t;
+typedef khronos_int64_t        khronos_stime_nanoseconds_t;
+#endif
+
+/*
+ * Dummy value used to pad enum types to 32 bits.
+ */
+#ifndef KHRONOS_MAX_ENUM
+#define KHRONOS_MAX_ENUM 0x7FFFFFFF
+#endif
+
+/*
+ * Enumerated boolean type
+ *
+ * Values other than zero should be considered to be true.  Therefore
+ * comparisons should not be made against KHRONOS_TRUE.
+ */
+typedef enum {
+    KHRONOS_FALSE = 0,
+    KHRONOS_TRUE  = 1,
+    KHRONOS_BOOLEAN_ENUM_FORCE_SIZE = KHRONOS_MAX_ENUM
+} khronos_boolean_enum_t;
+
+#endif /* __khrplatform_h_ */

src/gl/rwgl3.h

@@ -1,5 +1,5 @@
 #ifdef RW_GL3
-#include <GL/glew.h>
+#include "glad/glad.h"
 #ifdef LIBRW_SDL2
 #include <SDL.h>
 #else

src/gl/wdgl.cpp

@@ -14,7 +14,7 @@
 #include "rwwdgl.h"
 
 #ifdef RW_OPENGL
-#include <GL/glew.h>
+#include "glad/glad.h"
 #endif
 
 #define PLUGIN_ID 2