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llvmpipe: implement TGSI_PROPERTY_FS_COLOR0_WRITES_ALL_CBUFS 

Fixes http://bugs.freedesktop.org/show_bug.cgi?id=33284
This commit is contained in:
Brian Paul 2011-01-19 18:45:43 -07:00
parent b41d323c90
commit 7e86d9bd8c
1 changed files with 14 additions and 3 deletions
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17
src/gallium/drivers/llvmpipe/lp_state_fs.c
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@ -546,6 +546,7 @@ generate_fragment(struct llvmpipe_context *lp,
unsigned i;
unsigned chan;
unsigned cbuf;
boolean cbuf0_write_all;
/* Adjust color input interpolation according to flatshade state:
*/
@ -559,6 +560,15 @@ generate_fragment(struct llvmpipe_context *lp,
}
}
/* check if writes to cbuf[0] are to be copied to all cbufs */
cbuf0_write_all = FALSE;
for (i = 0;i < shader->info.base.num_properties; i++) {
if (shader->info.base.properties[i].name ==
TGSI_PROPERTY_FS_COLOR0_WRITES_ALL_CBUFS) {
cbuf0_write_all = TRUE;
break;
}
}
/* TODO: actually pick these based on the fs and color buffer
* characteristics. */
@ -697,9 +707,10 @@ generate_fragment(struct llvmpipe_context *lp,
mask_input,
counter);
for(cbuf = 0; cbuf < key->nr_cbufs; cbuf++)
for(chan = 0; chan < NUM_CHANNELS; ++chan)
fs_out_color[cbuf][chan][i] = out_color[cbuf][chan];
for (cbuf = 0; cbuf < key->nr_cbufs; cbuf++)
for (chan = 0; chan < NUM_CHANNELS; ++chan)
fs_out_color[cbuf][chan][i] =
out_color[cbuf * !cbuf0_write_all][chan];
}
sampler->destroy(sampler);