opengl_compat.h

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SDL/opengl_compat.h

      1 #pragma once
      2 
      3 #define GL_GLEXT_PROTOTYPES
      4 #include <SDL_opengl.h>
      5 #include <SDL_video.h>
      6 
      7 #ifndef __APPLE__
      8 #define GL_COMPAT_NAME(func) gl_compat_##func
      9 
     10 #define GL_COMPAT_WRAPPER(func) \
     11 ({  extern typeof(func) *GL_COMPAT_NAME(func); \
     12 if (!GL_COMPAT_NAME(func)) GL_COMPAT_NAME(func) = SDL_GL_GetProcAddress(#func); \
     13     GL_COMPAT_NAME(func); \
     14 })
     15 
     16 #define glCreateShader GL_COMPAT_WRAPPER(glCreateShader)
     17 #define glGetAttribLocation GL_COMPAT_WRAPPER(glGetAttribLocation)
     18 #define glGetUniformLocation GL_COMPAT_WRAPPER(glGetUniformLocation)
     19 #define glUseProgram GL_COMPAT_WRAPPER(glUseProgram)
     20 #define glGenVertexArrays GL_COMPAT_WRAPPER(glGenVertexArrays)
     21 #define glBindVertexArray GL_COMPAT_WRAPPER(glBindVertexArray)
     22 #define glGenBuffers GL_COMPAT_WRAPPER(glGenBuffers)
     23 #define glBindBuffer GL_COMPAT_WRAPPER(glBindBuffer)
     24 #define glBufferData GL_COMPAT_WRAPPER(glBufferData)
     25 #define glEnableVertexAttribArray GL_COMPAT_WRAPPER(glEnableVertexAttribArray)
     26 #define glVertexAttribPointer GL_COMPAT_WRAPPER(glVertexAttribPointer)
     27 #define glCreateProgram GL_COMPAT_WRAPPER(glCreateProgram)
     28 #define glAttachShader GL_COMPAT_WRAPPER(glAttachShader)
     29 #define glLinkProgram GL_COMPAT_WRAPPER(glLinkProgram)
     30 #define glGetProgramiv GL_COMPAT_WRAPPER(glGetProgramiv)
     31 #define glGetProgramInfoLog GL_COMPAT_WRAPPER(glGetProgramInfoLog)
     32 #define glDeleteShader GL_COMPAT_WRAPPER(glDeleteShader)
     33 #define glUniform2f GL_COMPAT_WRAPPER(glUniform2f)
     34 #define glActiveTexture GL_COMPAT_WRAPPER(glActiveTexture)
     35 #define glUniform1i GL_COMPAT_WRAPPER(glUniform1i)
     36 #define glBindFragDataLocation GL_COMPAT_WRAPPER(glBindFragDataLocation)
     37 #define glDeleteProgram GL_COMPAT_WRAPPER(glDeleteProgram)
     38 #define glShaderSource GL_COMPAT_WRAPPER(glShaderSource)
     39 #define glCompileShader GL_COMPAT_WRAPPER(glCompileShader)
     40 #define glGetShaderiv GL_COMPAT_WRAPPER(glGetShaderiv)
     41 #define glGetShaderInfoLog GL_COMPAT_WRAPPER(glGetShaderInfoLog)
     42 #endif

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