/*
=============
R_ShadowPassSetupGL
=============
*/
static void R_ShadowPassSetupGL( const plight_t *pl )
{
// matrices already computed
RI.worldviewMatrix = pl->modelviewMatrix;
RI.projectionMatrix = pl->projectionMatrix;
RI.worldviewProjectionMatrix = RI.projectionMatrix.Concat( RI.worldviewMatrix );
GLfloat dest[16];
// tell engine about worldviewprojection matrix so TriWorldToScreen and TriScreenToWorld
// will be working properly
RI.worldviewProjectionMatrix.CopyToArray( dest );
SET_ENGINE_WORLDVIEW_MATRIX( dest );
pglScissor( RI.scissor[0], RI.scissor[1], RI.scissor[2], RI.scissor[3] );
pglViewport( RI.viewport[0], RI.viewport[1], RI.viewport[2], RI.viewport[3] );
pglMatrixMode( GL_PROJECTION );
GL_LoadMatrix( RI.projectionMatrix );
pglMatrixMode( GL_MODELVIEW );
GL_LoadMatrix( RI.worldviewMatrix );
GL_Cull( GL_FRONT );
pglColor4f( 1.0f, 1.0f, 1.0f, 1.0f );
pglColorMask( GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE );
pglEnable( GL_POLYGON_OFFSET_FILL );
pglDisable( GL_TEXTURE_2D );
pglDepthMask( GL_TRUE );
pglPolygonOffset( 8, 30 );
pglEnable( GL_DEPTH_TEST );
pglDisable( GL_ALPHA_TEST );
pglDisable( GL_BLEND );
}
/*
=============
R_ShadowPassEndGL
=============
*/
static void R_ShadowPassEndGL( void )
{
pglColorMask( GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE );
pglDisable( GL_POLYGON_OFFSET_FILL );
pglEnable( GL_TEXTURE_2D );
pglPolygonOffset( -1, -2 );
}
static void ogl_DisableDepthBias(void)
{
ASSERT( _pGfx->gl_eCurrentAPI==GAT_OGL);
_sfStats.StartTimer(CStatForm::STI_GFXAPI);
pglDisable( GL_POLYGON_OFFSET_POINT);
pglDisable( GL_POLYGON_OFFSET_LINE);
pglDisable( GL_POLYGON_OFFSET_FILL);
pglPolygonOffset( 0.0f, 0.0f);
OGL_CHECKERROR;
_sfStats.StopTimer(CStatForm::STI_GFXAPI);
}