diff options
Diffstat (limited to 'src/gallium/drivers/softpipe/sp_quad_fs.c')
-rw-r--r-- | src/gallium/drivers/softpipe/sp_quad_fs.c | 60 |
1 files changed, 51 insertions, 9 deletions
diff --git a/src/gallium/drivers/softpipe/sp_quad_fs.c b/src/gallium/drivers/softpipe/sp_quad_fs.c index a73df31383..9a20c056a2 100644 --- a/src/gallium/drivers/softpipe/sp_quad_fs.c +++ b/src/gallium/drivers/softpipe/sp_quad_fs.c @@ -88,22 +88,64 @@ shade_quad( &qss->machine, quad ); - /* store result color */ +#if 0 /* XXX multi color outputs - untested */ + /* store outputs */ + boolean z_written = FALSE; + { + const ubyte *sem_name = softpipe->fs->info.output_semantic_name; + const ubyte *sem_index = softpipe->fs->info.output_semantic_index; + const uint n = qss->stage.softpipe->fs->info.num_outputs; + uint i; + for (i = 0; i < n; i++) { + switch (sem_name[i]) { + case TGSI_SEMANTIC_COLOR: + { + uint cbuf = sem_index[i]; + memcpy(quad->outputs.color[cbuf], + &machine->Outputs[i].xyzw[0].f[0], + sizeof(quad->outputs.color[0]) ); + } + break; + case TGSI_SEMANTIC_POSITION: + { + uint j; + for (j = 0; j < 4; j++) { + quad->outputs.depth[j] = machine->Outputs[0].xyzw[2].f[j]; + } + z_written = TRUE; + } + break; + } + } + } + + if (!z_written) { + /* compute Z values now, as in the quad earlyz stage */ + /* XXX we should really only do this if the earlyz stage is not used */ + const float fx = (float) quad->x0; + const float fy = (float) quad->y0; + const float dzdx = quad->posCoef->dadx[2]; + const float dzdy = quad->posCoef->dady[2]; + const float z0 = quad->posCoef->a0[2] + dzdx * fx + dzdy * fy; + + quad->outputs.depth[0] = z0; + quad->outputs.depth[1] = z0 + dzdx; + quad->outputs.depth[2] = z0 + dzdy; + quad->outputs.depth[3] = z0 + dzdx + dzdy; + } +#endif + + /* store result color(s) */ if (qss->colorOutSlot >= 0) { /* XXX need to handle multiple color outputs someday */ - assert(qss->stage.softpipe->fs->info.output_semantic_name[qss->colorOutSlot] + assert(softpipe->fs->info.output_semantic_name[qss->colorOutSlot] == TGSI_SEMANTIC_COLOR); memcpy( - quad->outputs.color, + quad->outputs.color[0], &machine->Outputs[qss->colorOutSlot].xyzw[0].f[0], - sizeof( quad->outputs.color ) ); + sizeof( quad->outputs.color[0] ) ); } - /* - * XXX the following code for updating quad->outputs.depth - * isn't really needed if we did early z testing. - */ - /* store result Z */ if (qss->depthOutSlot >= 0) { /* output[slot] is new Z */ |