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nvk: Disable sampleLocationsSampleCounts for 1x MSAA
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Suggested-by: Mel Henning <mhenning@darkrefraction.com>
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/14108
Fixes: a34edc7500 ("nvk: Fill out sample locations on Maxwell B+")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38018>
This commit is contained in:
Faith Ekstrand 2025-10-22 16:23:48 -04:00 • committed by Marge Bot
parent d1793c7a59
commit aa0f404f7b
1 changed files with 7 additions and 2 deletions
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9
src/nouveau/vulkan/nvk_physical_device.c
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@ -1145,8 +1145,13 @@ nvk_get_device_properties(const struct nvk_instance *instance,
.robustStorageBufferAccessSizeAlignment = NVK_SSBO_BOUNDS_CHECK_ALIGNMENT,
.robustUniformBufferAccessSizeAlignment = nvk_min_cbuf_alignment(info),
/* VK_EXT_sample_locations */
.sampleLocationSampleCounts = sample_counts,
/* VK_EXT_sample_locations
*
* There's a weird HW issue with per-sample interpolation for 1x. It
* always interpolates at (0.5, 0.5) so we just disable custom sample
* locations for 1x.
*/
.sampleLocationSampleCounts = sample_counts & ~VK_SAMPLE_COUNT_1_BIT,
.maxSampleLocationGridSize = (VkExtent2D){ 1, 1 },
.sampleLocationCoordinateRange[0] = 0.0f,
.sampleLocationCoordinateRange[1] = 0.9375f,