Mesa (vulkan): anv: Properly size the push constant L3 area.

[Kenneth Graunke]

Module: Mesa
Branch: vulkan
Commit: 3f115177302d1a969181649fde8c2332563aac73
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=3f115177302d1a969181649fde8c2332563aac73

Author: Kenneth Graunke <kenneth at whitecape.org>
Date:   Mon Feb 22 17:26:15 2016 -0800

anv: Properly size the push constant L3 area.

We were assuming it was 32kB everywhere, reducing the available URB
space.  It's actually 16kB on Ivybridge, Baytrail, and Haswell GT1-2.

---

 src/intel/vulkan/anv_pipeline.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/intel/vulkan/anv_pipeline.c b/src/intel/vulkan/anv_pipeline.c
index 672640a..6c8d4ad 100644
--- a/src/intel/vulkan/anv_pipeline.c
+++ b/src/intel/vulkan/anv_pipeline.c
@@ -755,8 +755,6 @@ anv_pipeline_compile_cs(struct anv_pipeline *pipeline,
    return VK_SUCCESS;
 }
 
-static const int gen8_push_size = 32 * 1024;
-
 static void
 gen7_compute_urb_partition(struct anv_pipeline *pipeline)
 {
@@ -785,7 +783,14 @@ gen7_compute_urb_partition(struct anv_pipeline *pipeline)
    unsigned urb_chunks = devinfo->urb.size * 1024 / chunk_size_bytes;
 
    /* Reserve space for push constants */
-   unsigned push_constant_bytes = gen8_push_size;
+#if GEN_GEN >= 8
+   unsigned push_constant_kb = 32;
+#elif GEN_IS_HASWELL
+   unsigned push_constant_kb = pipeline->device->info.gt == 3 ? 32 : 16;
+#else
+   unsigned push_constant_kb = 16;
+#endif
+   unsigned push_constant_bytes = push_constant_kb * 1024;
    unsigned push_constant_chunks =
       push_constant_bytes / chunk_size_bytes;