void i810DrawBuffer(GLcontext *ctx, GLenum mode )
{
i810ContextPtr imesa = I810_CONTEXT(ctx);
int front = 0;
/*
* _DrawDestMask is easier to cope with than <mode>.
*/
switch ( ctx->Color._DrawDestMask[0] ) {
case DD_FRONT_LEFT_BIT:
front = 1;
break;
case DD_BACK_LEFT_BIT:
front = 0;
break;
default:
/* GL_NONE or GL_FRONT_AND_BACK or stereo left&right, etc */
FALLBACK( imesa, I810_FALLBACK_DRAW_BUFFER, GL_TRUE );
return;
}
if ( imesa->sarea->pf_current_page == 1 )
front ^= 1;
FALLBACK( imesa, I810_FALLBACK_DRAW_BUFFER, GL_FALSE );
I810_FIREVERTICES(imesa);
I810_STATECHANGE(imesa, I810_UPLOAD_BUFFERS);
if (front)
{
imesa->BufferSetup[I810_DESTREG_DI1] = (imesa->i810Screen->fbOffset |
imesa->i810Screen->backPitchBits);
i810XMesaSetFrontClipRects( imesa );
}
else
{
imesa->BufferSetup[I810_DESTREG_DI1] = (imesa->i810Screen->backOffset |
imesa->i810Screen->backPitchBits);
i810XMesaSetBackClipRects( imesa );
}
/* We want to update the s/w rast state too so that r200SetBuffer()
* gets called.
*/
_swrast_DrawBuffer(ctx, mode);
}
void i810DrawBuffer(struct gl_context *ctx, GLenum mode )
{
i810ContextPtr imesa = I810_CONTEXT(ctx);
int front = 0;
if (ctx->DrawBuffer->_NumColorDrawBuffers != 1) {
/* GL_NONE or GL_FRONT_AND_BACK or stereo left&right, etc */
FALLBACK( imesa, I810_FALLBACK_DRAW_BUFFER, GL_TRUE );
return;
}
switch ( ctx->DrawBuffer->_ColorDrawBufferIndexes[0]) {
case BUFFER_FRONT_LEFT:
front = 1;
break;
case BUFFER_BACK_LEFT:
front = 0;
break;
default:
FALLBACK( imesa, I810_FALLBACK_DRAW_BUFFER, GL_TRUE );
return;
}
if ( imesa->sarea->pf_current_page == 1 )
front ^= 1;
FALLBACK( imesa, I810_FALLBACK_DRAW_BUFFER, GL_FALSE );
I810_FIREVERTICES(imesa);
I810_STATECHANGE(imesa, I810_UPLOAD_BUFFERS);
if (front)
{
imesa->BufferSetup[I810_DESTREG_DI1] = (imesa->i810Screen->fbOffset |
imesa->i810Screen->backPitchBits);
i810XMesaSetFrontClipRects( imesa );
}
else
{
imesa->BufferSetup[I810_DESTREG_DI1] = (imesa->i810Screen->backOffset |
imesa->i810Screen->backPitchBits);
i810XMesaSetBackClipRects( imesa );
}
}