>SDL_GL_GetProcAddress<
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>SDL Library Documentation<
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NAME="SDLGLGETPROCADDRESS"
>SDL_GL_GetProcAddress<
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CLASS="REFNAMEDIV"
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>SDL_GL_GetProcAddress -- Get the address of a GL function<
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>SDL_GL_GetProcAddress<
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>
(const
char* proc
);<
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>Returns the address of the GL function <
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> if the function is not found. If the GL library is loaded at runtime, with <
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> GL functions must be retrieved this way. Usually this is used to retrieve function pointers to OpenGL extensions.<
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>typedef void (*GL_ActiveTextureARB_Func)(unsigned int);
GL_ActiveTextureARB_Func glActiveTextureARB_ptr = 0;
int has_multitexture=1;
.
.
.
/* Get function pointer */
glActiveTextureARB_ptr=(GL_ActiveTextureARB_Func) SDL_GL_GetProcAddress("glActiveTextureARB");
/* Check for a valid function ptr */
if(!glActiveTextureARB_ptr){
fprintf(stderr, "Multitexture Extensions not present.\n");
has_multitexture=0;
}
.
.
.
.
if(has_multitexture){
glActiveTextureARB_ptr(GL_TEXTURE0_ARB);
.
.
}
else{
.
.
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