/*
* RB_BindImage
*/
void RB_BindImage( int tmu, const image_t *tex )
{
GLuint texnum;
assert( tex != NULL );
assert( tex->texnum != 0 );
if( tex->missing ) {
tex = rsh.noTexture;
} else if( !tex->loaded ) {
// not yet loaded from disk
tex = tex->flags & IT_CUBEMAP ? rsh.whiteCubemapTexture : rsh.whiteTexture;
} else if( rsh.noTexture && ( r_nobind->integer && tex->texnum != 0 ) ) {
// performance evaluation option
tex = rsh.noTexture;
}
if( rb.gl.flushTextures ) {
rb.gl.flushTextures = false;
memset( rb.gl.currentTextures, 0, sizeof( rb.gl.currentTextures ) );
}
texnum = tex->texnum;
if( rb.gl.currentTextures[tmu] == texnum )
return;
rb.gl.currentTextures[tmu] = texnum;
RB_SelectTextureUnit( tmu );
qglBindTexture( R_TextureTarget( tex->flags, NULL ), tex->texnum );
rb.stats.c_totalBinds++;
}
/*
* RB_SetGLDefaults
*/
static void RB_SetGLDefaults( void )
{
int i;
qglClearColor( 1, 0, 0.5, 0.5 );
if( glConfig.stencilEnabled )
{
qglStencilMask( ( GLuint ) ~0 );
qglStencilFunc( GL_EQUAL, 128, 0xFF );
qglStencilOp( GL_KEEP, GL_KEEP, GL_INCR );
}
// properly disable multitexturing at startup
for( i = glConfig.maxTextureUnits-1; i >= 0; i-- )
{
RB_SelectTextureUnit( i );
qglDisable( GL_TEXTURE_2D );
}
qglEnable( GL_TEXTURE_2D );
qglDisable( GL_CULL_FACE );
qglFrontFace( GL_CCW );
qglEnable( GL_SCISSOR_TEST );
qglDisable( GL_BLEND );
qglDisable( GL_ALPHA_TEST );
qglDepthFunc( GL_LEQUAL );
qglDepthMask( GL_FALSE );
qglDisable( GL_POLYGON_OFFSET_FILL );
qglColorMask( GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE );
qglEnable( GL_DEPTH_TEST );
qglShadeModel( GL_SMOOTH );
if( qglPolygonMode ) {
qglPolygonMode( GL_FRONT_AND_BACK, GL_FILL );
}
qglFrontFace( GL_CCW );
rb.gl.state = 0;
rb.gl.frontFace = qfalse;
rb.gl.currentTMU = -1;
rb.gl.faceCull = 0;
rb.gl.polygonOffset[0] = rb.gl.polygonOffset[1] = 0;
memset( rb.gl.currentTextures, 0, sizeof( rb.gl.currentTextures ) );
}
/*
* RB_BeginRegistration
*/
void RB_BeginRegistration( void )
{
int i;
RB_RegisterStreamVBOs();
RB_BindVBO( 0, 0 );
// unbind all texture targets on all TMUs
for( i = MAX_TEXTURE_UNITS - 1; i >= 0; i-- ) {
RB_SelectTextureUnit( i );
qglBindTexture( GL_TEXTURE_CUBE_MAP_ARB, 0 );
if( glConfig.ext.texture_array )
qglBindTexture( GL_TEXTURE_2D_ARRAY_EXT, 0 );
if( glConfig.ext.texture3D )
qglBindTexture( GL_TEXTURE_3D_EXT, 0 );
qglBindTexture( GL_TEXTURE_2D, 0 );
}
RB_FlushTextureCache();
}
/*
* RB_BindTexture
*/
void RB_BindTexture( int tmu, const image_t *tex )
{
GLuint texnum;
assert( tex != NULL );
if( r_nobind->integer && r_notexture && tex->texnum != 0 ) // performance evaluation option
tex = r_notexture;
RB_SelectTextureUnit( tmu );
texnum = tex->texnum;
if( rb.gl.currentTextures[tmu] == texnum )
return;
rb.gl.anyTexturesBound = 1;
rb.gl.currentTextures[tmu] = texnum;
if( tex->flags & IT_CUBEMAP )
qglBindTexture( GL_TEXTURE_CUBE_MAP_ARB, texnum );
else
qglBindTexture( GL_TEXTURE_2D, texnum );
}