[Mesa-dev] [PATCH] radv: fix centroid interpolation

Samuel Pitoiset samuel.pitoiset at gmail.com
Mon May 21 09:15:51 UTC 2018

It's legal to set the centroid and sample interpolation modes
when MSAA disabled. So, we have to initialize the centroid
inputs because the hardware doesn't.

This fixes rendering issues with DXVK and The Witness, World of
Warcraft, Trackmania and probably more games.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=106315
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=102390
CC: 18.0 18.1 <mesa-stable at lists.freedesktop.org>
Signed-off-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>
 src/amd/vulkan/radv_nir_to_llvm.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/src/amd/vulkan/radv_nir_to_llvm.c b/src/amd/vulkan/radv_nir_to_llvm.c
index 9b9619b877e..2d91ded7fe5 100644
--- a/src/amd/vulkan/radv_nir_to_llvm.c
+++ b/src/amd/vulkan/radv_nir_to_llvm.c
@@ -2075,9 +2075,6 @@ static void
 prepare_interp_optimize(struct radv_shader_context *ctx,
                         struct nir_shader *nir)
-	if (!ctx->options->key.fs.multisample)
-		return;
 	bool uses_center = false;
 	bool uses_centroid = false;
 	nir_foreach_variable(variable, &nir->inputs) {

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