intel: workaround VS fixed function issue on Gen9 GT1 parts

The issue is noticeable in the
dEQP-GLES31.functional.geometry_shading.layered.render_with_default_layer_3d
test where a triangle goes missing when we use the maximum number of
URB entries as specified by the documentation.

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107505
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Acked-by: Kenneth Graunke <kenneth@whitecape.org>

diff --git a/src/intel/dev/gen_device_info.c b/src/intel/dev/gen_device_info.c
index 2422c73b957276d9bb3be03dd9325cb4f05f20cd..0474759329199d1f7a12e70eb9f4c970a8089f0b 100644 (file)
--- a/src/intel/dev/gen_device_info.c
+++ b/src/intel/dev/gen_device_info.c
@@ -617,6 +617,10 @@ static const struct gen_device_info gen_device_info_skl_gt1 = {
    .num_eu_per_subslice = 6,
    .l3_banks = 2,
    .urb.size = 192,
+   /* GT1 seems to have a bug in the top of the pipe (VF/VS?) fixed functions
+    * leading to some vertices to go missing if we use too much URB.
+    */
+   .urb.max_entries[MESA_SHADER_VERTEX] = 928,
    .simulator_id = 12,
 };
 
@@ -688,6 +692,10 @@ static const struct gen_device_info gen_device_info_kbl_gt1 = {
    .num_subslices = { 2, },
    .num_eu_per_subslice = 6,
    .l3_banks = 2,
+   /* GT1 seems to have a bug in the top of the pipe (VF/VS?) fixed functions
+    * leading to some vertices to go missing if we use too much URB.
+    */
+   .urb.max_entries[MESA_SHADER_VERTEX] = 928,
    .simulator_id = 16,
 };
 
@@ -775,6 +783,10 @@ static const struct gen_device_info gen_device_info_cfl_gt1 = {
    .num_eu_per_subslice = 6,
    .l3_banks = 2,
    .urb.size = 192,
+   /* GT1 seems to have a bug in the top of the pipe (VF/VS?) fixed functions
+    * leading to some vertices to go missing if we use too much URB.
+    */
+   .urb.max_entries[MESA_SHADER_VERTEX] = 928,
    .simulator_id = 24,
 };
 static const struct gen_device_info gen_device_info_cfl_gt2 = {