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anv: disable crast on SKL

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SKL is failing the following tests (maybe more) :

dEQP-VK.rasterization.conservative.overestimate.samples_1.triangles.degenerate.0_00
dEQP-VK.rasterization.conservative.overestimate.samples_16.triangles.degenerate.max
dEQP-VK.rasterization.conservative.overestimate.samples_2.triangles.degenerate.max
dEQP-VK.rasterization.conservative.overestimate.samples_2.triangles.degenerate.min
dEQP-VK.rasterization.conservative.overestimate.samples_4.triangles.degenerate.0_00
dEQP-VK.rasterization.conservative.overestimate.samples_8.triangles.degenerate.max
dEQP-VK.rasterization.conservative.overestimate.samples_8.triangles.degenerate.min

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Cc: mesa-stable
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@intel.com>
(cherry picked from commit 94d2ec975d)

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/39003>
This commit is contained in:
Lionel Landwerlin 2025-12-15 15:59:10 +02:00 • committed by Dylan Baker
parent 3093f7fc70
commit f873b7f6c9
2 changed files with 6 additions and 2 deletions
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2
.pick_status.json
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@ -554,7 +554,7 @@
"description": "anv: disable crast on SKL",
"nominated": true,
"nomination_type": 1,
"resolution": 0,
"resolution": 1,
"main_sha": null,
"because_sha": null,
"notes": null

6
src/intel/vulkan/anv_physical_device.c
View file

@ -280,7 +280,11 @@ get_device_extensions(const struct anv_physical_device *device,
.EXT_calibrated_timestamps = device->has_reg_timestamp,
.EXT_color_write_enable = true,
.EXT_conditional_rendering = true,
.EXT_conservative_rasterization = true,
/* Skylake has broken conservative rasterization with backface culling.
* There is a chicken bit in 3D_CHICKEN3 to reenable the broken behavior
* on KBL+. So just disable crast on SKL.
*/
.EXT_conservative_rasterization = device->info.platform != INTEL_PLATFORM_SKL,
.EXT_custom_border_color = true,
.EXT_depth_bias_control = true,
.EXT_depth_clamp_control = true,