diff options
| author | Brian <brian.paul@tungstengraphics.com> | 2007-07-12 16:17:14 -0600 |
|---|---|---|
| committer | Brian <brian.paul@tungstengraphics.com> | 2007-07-12 16:17:14 -0600 |
| commit | f0f9a22609ccf2b8edc5760480f1a7a78cb504d7 (patch) | |
| tree | 8bcf2aff7109cb03d1fb0e7167a8ee34f1315b6b /src/mesa/pipe/softpipe | |
| parent | a48d767cf2ec82d0c0f893a22d22e8593901b206 (diff) | |
minor changes, comments about multiple color buffers, MRT.
Diffstat (limited to 'src/mesa/pipe/softpipe')
| -rw-r--r-- | src/mesa/pipe/softpipe/sp_quad_bufloop.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/mesa/pipe/softpipe/sp_quad_bufloop.c b/src/mesa/pipe/softpipe/sp_quad_bufloop.c index 977cc74c26..76e7fd5889 100644 --- a/src/mesa/pipe/softpipe/sp_quad_bufloop.c +++ b/src/mesa/pipe/softpipe/sp_quad_bufloop.c @@ -23,9 +23,15 @@ cbuf_loop_quad(struct quad_stage *qs, struct quad_header *quad) /* make copy of original colors since they can get modified * by blending and masking. + * XXX we won't have to do this if the fragment program actually emits + * N separate colors and we're drawing to N color buffers (MRT). + * But if we emitted one color and glDrawBuffer(GL_FRONT_AND_BACK) is + * in effect, we need to save/restore colors like this. */ memcpy(tmp, quad->outputs.color, sz); + assert(softpipe->framebuffer.num_cbufs <= PIPE_MAX_COLOR_BUFS); + for (i = 0; i < softpipe->framebuffer.num_cbufs; i++) { /* set current cbuffer */ softpipe->cbuf = softpipe->framebuffer.cbufs[i]; @@ -45,7 +51,8 @@ cbuf_loop_quad(struct quad_stage *qs, struct quad_header *quad) /** * Create the colorbuffer loop stage. - * This is used to implement GL_FRONT_AND_BACK rendering. + * This is used to implement multiple render targets and GL_FRONT_AND_BACK + * rendering. */ struct quad_stage *sp_quad_bufloop_stage( struct softpipe_context *softpipe ) { |