/* XXX support for separate read/draw buffers hasn't been tested */ static void tdfxDDDrawBuffer( GLcontext *ctx, GLenum mode ) { tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx); if ( TDFX_DEBUG & DEBUG_VERBOSE_API ) { fprintf( stderr, "%s()\n", __FUNCTION__ ); } FLUSH_BATCH( fxMesa ); if (ctx->DrawBuffer->_NumColorDrawBuffers > 1) { FALLBACK( fxMesa, TDFX_FALLBACK_DRAW_BUFFER, GL_TRUE ); return; } switch ( ctx->DrawBuffer->_ColorDrawBufferIndexes[0] ) { case BUFFER_FRONT_LEFT: fxMesa->DrawBuffer = fxMesa->ReadBuffer = GR_BUFFER_FRONTBUFFER; fxMesa->new_state |= TDFX_NEW_RENDER; FALLBACK( fxMesa, TDFX_FALLBACK_DRAW_BUFFER, GL_FALSE ); break; case BUFFER_BACK_LEFT: fxMesa->DrawBuffer = fxMesa->ReadBuffer = GR_BUFFER_BACKBUFFER; fxMesa->new_state |= TDFX_NEW_RENDER; FALLBACK( fxMesa, TDFX_FALLBACK_DRAW_BUFFER, GL_FALSE ); break; case -1: FX_grColorMaskv( ctx, false4 ); FALLBACK( fxMesa, TDFX_FALLBACK_DRAW_BUFFER, GL_FALSE ); break; default: FALLBACK( fxMesa, TDFX_FALLBACK_DRAW_BUFFER, GL_TRUE ); break; } }
/* XXX support for separate read/draw buffers hasn't been tested */ static void tdfxDDDrawBuffer( GLcontext *ctx, GLenum mode ) { tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx); if ( TDFX_DEBUG & DEBUG_VERBOSE_API ) { fprintf( stderr, "%s()\n", __FUNCTION__ ); } FLUSH_BATCH( fxMesa ); /* * _DrawDestMask is easier to cope with than <mode>. */ switch ( ctx->Color._DrawDestMask[0] ) { case DD_FRONT_LEFT_BIT: fxMesa->DrawBuffer = fxMesa->ReadBuffer = GR_BUFFER_FRONTBUFFER; fxMesa->new_state |= TDFX_NEW_RENDER; FALLBACK( fxMesa, TDFX_FALLBACK_DRAW_BUFFER, GL_FALSE ); break; case DD_BACK_LEFT_BIT: fxMesa->DrawBuffer = fxMesa->ReadBuffer = GR_BUFFER_BACKBUFFER; fxMesa->new_state |= TDFX_NEW_RENDER; FALLBACK( fxMesa, TDFX_FALLBACK_DRAW_BUFFER, GL_FALSE ); break; case 0: FX_grColorMaskv( ctx, false4 ); FALLBACK( fxMesa, TDFX_FALLBACK_DRAW_BUFFER, GL_FALSE ); break; default: FALLBACK( fxMesa, TDFX_FALLBACK_DRAW_BUFFER, GL_TRUE ); break; } /* We want to update the s/w rast state too so that tdfxDDSetBuffer() * gets called. */ _swrast_DrawBuffer(ctx, mode); }