PDGL_API void pdglDepthRange(float nearv, float farv)
{
if(pglDepthRange)
{ pglDepthRange(nearv, farv); return; }
pglDepthRange=pdglGetProcAddress("glDepthRange");
pglDepthRange(nearv, farv);
}
/*
=============
R_Clear
=============
*/
static void R_Clear( int bitMask )
{
int bits;
if( gl_overview->integer )
pglClearColor( 0.0f, 1.0f, 0.0f, 1.0f ); // green background (Valve rules)
else pglClearColor( 0.5f, 0.5f, 0.5f, 1.0f );
bits = GL_DEPTH_BUFFER_BIT;
if( RI.drawWorld && r_fastsky->integer )
bits |= GL_COLOR_BUFFER_BIT;
if( glState.stencilEnabled )
bits |= GL_STENCIL_BUFFER_BIT;
bits &= bitMask;
pglClear( bits );
// change ordering for overview
if( RI.drawOrtho )
{
gldepthmin = 1.0f;
gldepthmax = 0.0f;
}
else
{
gldepthmin = 0.0f;
gldepthmax = 1.0f;
}
pglDepthFunc( GL_LEQUAL );
pglDepthRange( gldepthmin, gldepthmax );
}
// set depth buffer range
static void ogl_DepthRange( FLOAT fMin, FLOAT fMax)
{
// check consistency
ASSERT( _pGfx->gl_eCurrentAPI==GAT_OGL);
#ifndef NDEBUG
GLfloat fDepths[2];
pglGetFloatv( GL_DEPTH_RANGE, fDepths);
OGL_CHECKERROR;
ASSERT( fDepths[0]==GFX_fMinDepthRange && fDepths[1]==GFX_fMaxDepthRange);
#endif
// cached?
if( GFX_fMinDepthRange==fMin && GFX_fMaxDepthRange==fMax && gap_bOptimizeStateChanges) return;
GFX_fMinDepthRange = fMin;
GFX_fMaxDepthRange = fMax;
_sfStats.StartTimer(CStatForm::STI_GFXAPI);
pglDepthRange( fMin, fMax);
OGL_CHECKERROR;
_sfStats.StopTimer(CStatForm::STI_GFXAPI);
}