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i965: Flip key->compute_sample_id check.

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This just moves the simple case first.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
This commit is contained in:
Kenneth Graunke
2016-04-18 18:11:01 -07:00
parent 43ed1f73f8
commit 528255b0b1
1 changed files with 7 additions and 7 deletions
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src/mesa/drivers/dri/i965/brw_fs.cpp
+7 -7
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@@ -1337,7 +1337,13 @@ fs_visitor::emit_sampleid_setup()
const fs_builder abld = bld.annotate("compute sample id");
fs_reg *reg = new(this->mem_ctx) fs_reg(vgrf(glsl_type::int_type));
if (key->compute_sample_id) {
if (!key->compute_sample_id) {
/* As per GL_ARB_sample_shading specification:
* "When rendering to a non-multisample buffer, or if multisample
* rasterization is disabled, gl_SampleID will always be zero."
*/
abld.MOV(*reg, brw_imm_d(0));
} else {
fs_reg t1(VGRF, alloc.allocate(1), BRW_REGISTER_TYPE_D);
t1.set_smear(0);
fs_reg t2(VGRF, alloc.allocate(1), BRW_REGISTER_TYPE_W);
@@ -1380,12 +1386,6 @@ fs_visitor::emit_sampleid_setup()
* width=4, hstride=0 of t2 during an ADD instruction.
*/
abld.emit(FS_OPCODE_SET_SAMPLE_ID, *reg, t1, t2);
} else {
/* As per GL_ARB_sample_shading specification:
* "When rendering to a non-multisample buffer, or if multisample
* rasterization is disabled, gl_SampleID will always be zero."
*/
abld.MOV(*reg, brw_imm_d(0));
}
return reg;