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Dynamically load glGetString(), to avoid direct dependency on OpenGL.

This commit is contained in:
Ryan C. Gordon 2014-03-01 21:33:48 -05:00
parent 73936208b0
commit bafa4c7ae8
1 changed files with 9 additions and 1 deletions
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10
src/video/cocoa/SDL_cocoaopengl.m
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@ -162,6 +162,7 @@ SDL_GLContext
Cocoa_GL_CreateContext(_THIS, SDL_Window * window)
{
SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
const GLubyte *(APIENTRY * glGetStringFunc)(GLenum) = NULL;
NSAutoreleasePool *pool;
SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
SDL_DisplayData *displaydata = (SDL_DisplayData *)display->driverdata;
@ -275,7 +276,14 @@ Cocoa_GL_CreateContext(_THIS, SDL_Window * window)
return NULL;
}
glversion = (const char *)glGetString(GL_VERSION);
glGetStringFunc = (const GLubyte *(APIENTRY *)(GLenum)) SDL_GL_GetProcAddress("glGetString");
if (!glGetStringFunc) {
Cocoa_GL_DeleteContext(_this, context);
SDL_SetError ("Failed getting OpenGL glGetString entry point");
return NULL;
}
glversion = (const char *)glGetStringFunc(GL_VERSION);
if (glversion == NULL) {
Cocoa_GL_DeleteContext(_this, context);
SDL_SetError ("Failed getting OpenGL context version");