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authorEric Anholt <eric@anholt.net>2010-10-26 10:31:08 -0700
committerEric Anholt <eric@anholt.net>2010-10-26 10:34:14 -0700
commit0e8c834ffa2f6d943a927e1a32a273d2f8600694 (patch)
tree6f1fbc8cb7b4f95cea026eea9945f475590b0578 /src
parent1732a8bc72fe0a8eaf7449eda65eba1a017ae909 (diff)
i965: Clear some undefined fields of g0 when using them for gen6 FB writes.
This doesn't appear to help any testcases I'm looking at, but it looks like it's required.
Diffstat (limited to 'src')
-rw-r--r--src/mesa/drivers/dri/i965/brw_fs.cpp14
1 files changed, 14 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp
index c687fde873..fc30ffc674 100644
--- a/src/mesa/drivers/dri/i965/brw_fs.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs.cpp
@@ -1961,6 +1961,20 @@ fs_visitor::generate_fb_write(fs_inst *inst)
brw_MOV(p,
brw_message_reg(inst->base_mrf),
brw_vec8_grf(0, 0));
+
+ if (inst->target > 0) {
+ /* Set the render target index for choosing BLEND_STATE. */
+ brw_MOV(p, retype(brw_vec1_reg(BRW_MESSAGE_REGISTER_FILE, 0, 2),
+ BRW_REGISTER_TYPE_UD),
+ brw_imm_ud(inst->target));
+ }
+
+ /* Clear viewport index, render target array index. */
+ brw_AND(p, retype(brw_vec1_reg(BRW_MESSAGE_REGISTER_FILE, 0, 0),
+ BRW_REGISTER_TYPE_UD),
+ retype(brw_vec1_grf(0, 0), BRW_REGISTER_TYPE_UD),
+ brw_imm_ud(0xf7ff));
+
implied_header = brw_null_reg();
} else {
implied_header = retype(brw_vec8_grf(0, 0), BRW_REGISTER_TYPE_UW);