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radv/winsys: add a new flag that requests zerovram allocations

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This introduces RADON_FLAG_ZERO_VRAM.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3888>
This commit is contained in:
Samuel Pitoiset 2020-02-20 07:19:27 +01:00
parent 7a73446c51
commit 37650bf938
2 changed files with 6 additions and 2 deletions
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1
src/amd/vulkan/radv_radeon_winsys.h
View file

@ -61,6 +61,7 @@ enum radeon_bo_flag { /* bitfield */
RADEON_FLAG_READ_ONLY = (1 << 7),
RADEON_FLAG_32BIT = (1 << 8),
RADEON_FLAG_PREFER_LOCAL_BO = (1 << 9),
RADEON_FLAG_ZERO_VRAM = (1 << 10),
};
enum radeon_bo_usage { /* bitfield */

7
src/amd/vulkan/winsys/amdgpu/radv_amdgpu_bo.c
View file

@ -382,8 +382,11 @@ radv_amdgpu_winsys_bo_create(struct radeon_winsys *_ws,
}
/* this won't do anything on pre 4.9 kernels */
if (ws->zero_all_vram_allocs && (initial_domain & RADEON_DOMAIN_VRAM))
request.flags |= AMDGPU_GEM_CREATE_VRAM_CLEARED;
if (initial_domain & RADEON_DOMAIN_VRAM) {
if (ws->zero_all_vram_allocs || (flags & RADEON_FLAG_ZERO_VRAM))
request.flags |= AMDGPU_GEM_CREATE_VRAM_CLEARED;
}
r = amdgpu_bo_alloc(ws->dev, &request, &buf_handle);
if (r) {
fprintf(stderr, "amdgpu: Failed to allocate a buffer:\n");