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* Revert 1176 -- MinGW's headers are too old *sigh*

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* Revert to using literal function pointers for GL extensions rather than PFN*
  typedefs as some platforms' headers are broken enough that they prevent
  SDL_opengl.h from fixing things up if the PFN* typedefs are missing
This commit is contained in:
Tim Angus 2007-09-12 18:02:38 +00:00
parent 4f4f0c0dab
commit 1d54a9ebe5
8 changed files with 75 additions and 46 deletions
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57
code/sdl/sdl_glimp.c
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@ -70,8 +70,12 @@ static SDL_Surface *screen = NULL;
cvar_t *r_allowSoftwareGL; // Don't abort out if a hardware visual can't be obtained
PFNGLLOCKARRAYSEXTPROC qglLockArraysEXT;
PFNGLUNLOCKARRAYSEXTPROC qglUnlockArraysEXT;
void (APIENTRYP qglActiveTextureARB) (GLenum texture);
void (APIENTRYP qglClientActiveTextureARB) (GLenum texture);
void (APIENTRYP qglMultiTexCoord2fARB) (GLenum target, GLfloat s, GLfloat t);
void (APIENTRYP qglLockArraysEXT) (GLint first, GLsizei count);
void (APIENTRYP qglUnlockArraysEXT) (void);
/*
===============
@ -85,8 +89,8 @@ void GLimp_Shutdown( void )
SDL_QuitSubSystem( SDL_INIT_VIDEO );
screen = NULL;
memset( &glConfig, 0, sizeof( glConfig ) );
memset( &glState, 0, sizeof( glState ) );
Com_Memset( &glConfig, 0, sizeof( glConfig ) );
Com_Memset( &glState, 0, sizeof( glState ) );
}
/*
@ -376,6 +380,46 @@ static void GLimp_InitExtensions( void )
ri.Printf( PRINT_ALL, "...GL_EXT_texture_env_add not found\n" );
}
// GL_ARB_multitexture
qglMultiTexCoord2fARB = NULL;
qglActiveTextureARB = NULL;
qglClientActiveTextureARB = NULL;
if ( Q_stristr( glConfig.extensions_string, "GL_ARB_multitexture" ) )
{
if ( r_ext_multitexture->value )
{
qglMultiTexCoord2fARB = ( PFNGLMULTITEXCOORD2FARBPROC ) SDL_GL_GetProcAddress( "glMultiTexCoord2fARB" );
qglActiveTextureARB = ( PFNGLACTIVETEXTUREARBPROC ) SDL_GL_GetProcAddress( "glActiveTextureARB" );
qglClientActiveTextureARB = ( PFNGLCLIENTACTIVETEXTUREARBPROC ) SDL_GL_GetProcAddress( "glClientActiveTextureARB" );
if ( qglActiveTextureARB )
{
GLint glint = 0;
qglGetIntegerv( GL_MAX_TEXTURE_UNITS_ARB, &glint );
glConfig.numTextureUnits = (int) glint;
if ( glConfig.numTextureUnits > 1 )
{
ri.Printf( PRINT_ALL, "...using GL_ARB_multitexture\n" );
}
else
{
qglMultiTexCoord2fARB = NULL;
qglActiveTextureARB = NULL;
qglClientActiveTextureARB = NULL;
ri.Printf( PRINT_ALL, "...not using GL_ARB_multitexture, < 2 texture units\n" );
}
}
}
else
{
ri.Printf( PRINT_ALL, "...ignoring GL_ARB_multitexture\n" );
}
}
else
{
ri.Printf( PRINT_ALL, "...GL_ARB_multitexture not found\n" );
}
// GL_EXT_compiled_vertex_array
if ( Q_stristr( glConfig.extensions_string, "GL_EXT_compiled_vertex_array" ) )
{
@ -471,11 +515,6 @@ void GLimp_Init( void )
Q_strncpyz( glConfig.version_string, (char *) qglGetString (GL_VERSION), sizeof( glConfig.version_string ) );
Q_strncpyz( glConfig.extensions_string, (char *) qglGetString (GL_EXTENSIONS), sizeof( glConfig.extensions_string ) );
// multitexturing
qglGetIntegerv( GL_MAX_TEXTURE_UNITS, (GLint *)&glConfig.numTextureUnits );
if( glConfig.numTextureUnits < 2 )
ri.Printf( PRINT_ALL, "Insufficient texture units for multitexturing\n" );
// initialize extensions
GLimp_InitExtensions( );