From: Dave Airlie <airl...@redhat.com>
From AMDVLK fast clears don't work with cmask on gfx9, only with
dcc, so we don't need to allocate cmask for single sampled surfaces.
Signed-off-by: Dave Airlie <airl...@redhat.com>
---
src/amd/vulkan/radv_image.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/src/amd/vulkan/radv_image.c b/src/amd/vulkan/radv_image.c
index efd17e4889..612fb1d791 100644
--- a/src/amd/vulkan/radv_image.c
+++ b/src/amd/vulkan/radv_image.c
@@ -834,7 +834,7 @@ radv_image_can_enable_dcc(struct radv_image *image)
}
static inline bool
-radv_image_can_enable_cmask(struct radv_image *image)
+radv_image_can_enable_cmask(struct radv_image *image, bool is_gfx9)
{
if (image->surface.bpe > 8 && image->info.samples == 1) {
/* Do not enable CMASK for non-MSAA images (fast color clear)
@@ -844,6 +844,12 @@ radv_image_can_enable_cmask(struct radv_image *image)
return false;
}
+ if (is_gfx9 && image->info.samples == 1) {
+ /* amdvlk - GFX9 only supports fast color clears using DCC
memory; having cMask does nothing for fast-clears.
+ - we just enable it for multisample cases then. */
+ return false;
+ }
+
return radv_image_can_enable_dcc_or_cmask(image) &&
image->info.levels == 1 &&
image->info.depth == 1 &&
@@ -926,7 +932,7 @@ radv_image_create(VkDevice _device,
} else {
/* When DCC cannot be enabled, try CMASK. */
image->surface.dcc_size = 0;
- if (radv_image_can_enable_cmask(image)) {
+ if (radv_image_can_enable_cmask(image,
device->physical_device->rad_info.chip_class >= GFX9)) {
radv_image_alloc_cmask(device, image);
}
}
--
2.14.3
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