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authorEric Anholt <[email protected]>2016-11-04 13:41:20 -0700
committerEric Anholt <[email protected]>2016-11-04 15:34:38 -0700
commit283d4d18e598793bbff7d9ba5a601bced9b36542 (patch)
tree3570bd028c34f111aa653afb59912e877acf55a4
parent70fc3a941abc876f8679a32bc9aa83ff3ca2a129 (diff)
vc4: Use Newton-Raphson on the 1/W write to fix glmark2 terrain.
The 1/W was apparently not accurate enough, and we were getting sparklies in the distance. The closed driver also did a N-R step here. Cc: <[email protected]>
-rw-r--r--src/gallium/drivers/vc4/vc4_program.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/gallium/drivers/vc4/vc4_program.c b/src/gallium/drivers/vc4/vc4_program.c
index f4be5f43c8c..33cd1355b99 100644
--- a/src/gallium/drivers/vc4/vc4_program.c
+++ b/src/gallium/drivers/vc4/vc4_program.c
@@ -1421,7 +1421,7 @@ emit_vert_end(struct vc4_compile *c,
struct vc4_varying_slot *fs_inputs,
uint32_t num_fs_inputs)
{
- struct qreg rcp_w = qir_RCP(c, c->outputs[c->output_position_index + 3]);
+ struct qreg rcp_w = ntq_rcp(c, c->outputs[c->output_position_index + 3]);
emit_stub_vpm_read(c);