[Mesa-dev] [PATCH 01/17] anv/pipeline: Don't assert on more than 32 samplers

[Jason Ekstrand]

This prevents an assert when running one unreleased Vulkan game.
---
 src/intel/vulkan/genX_pipeline.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/intel/vulkan/genX_pipeline.c b/src/intel/vulkan/genX_pipeline.c
index 0ae9ead..b6a537b 100644
--- a/src/intel/vulkan/genX_pipeline.c
+++ b/src/intel/vulkan/genX_pipeline.c
@@ -1081,7 +1081,13 @@ emit_3dstate_streamout(struct anv_pipeline *pipeline,
 static uint32_t
 get_sampler_count(const struct anv_shader_bin *bin)
 {
-   return DIV_ROUND_UP(bin->bind_map.sampler_count, 4);
+   uint32_t count_by_4 = DIV_ROUND_UP(bin->bind_map.sampler_count, 4);
+
+   /* We can potentially have way more than 32 samplers and that's ok.
+    * However, the 3DSTATE_XS packets only have 3 bits to specify how
+    * many to pre-fetch and all values above 4 are marked reserved.
+    */
+   return MIN2(count_by_4, 4);
 }
 
 static uint32_t
-- 
2.5.0.400.gff86faf