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hwcontext_vulkan: use dedicated allocation for buffers when necessary

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This commit is contained in:
Lynne 2020-05-26 10:34:31 +01:00
parent 4dcb50c58a
commit 6bb718aabd
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GPG Key ID: A2FEA5F03F034464
1 changed files with 28 additions and 3 deletions
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31
libavutil/hwcontext_vulkan.c
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@ -2663,7 +2663,7 @@ static int create_buf(AVHWDeviceContext *ctx, AVBufferRef **buf, size_t imp_size
{
int err;
VkResult ret;
VkMemoryRequirements req;
int use_ded_mem;
AVVulkanDeviceContext *hwctx = ctx->hwctx;
VulkanDevicePriv *p = ctx->internal->priv;
@ -2674,6 +2674,21 @@ static int create_buf(AVHWDeviceContext *ctx, AVBufferRef **buf, size_t imp_size
.sharingMode = VK_SHARING_MODE_EXCLUSIVE,
};
VkBufferMemoryRequirementsInfo2 req_desc = {
.sType = VK_STRUCTURE_TYPE_BUFFER_MEMORY_REQUIREMENTS_INFO_2,
};
VkMemoryDedicatedAllocateInfo ded_alloc = {
.sType = VK_STRUCTURE_TYPE_MEMORY_DEDICATED_ALLOCATE_INFO,
.pNext = alloc_pnext,
};
VkMemoryDedicatedRequirements ded_req = {
.sType = VK_STRUCTURE_TYPE_MEMORY_DEDICATED_REQUIREMENTS,
};
VkMemoryRequirements2 req = {
.sType = VK_STRUCTURE_TYPE_MEMORY_REQUIREMENTS_2,
.pNext = &ded_req,
};
ImageBuffer *vkbuf = av_mallocz(sizeof(*vkbuf));
if (!vkbuf)
return AVERROR(ENOMEM);
@ -2695,9 +2710,19 @@ static int create_buf(AVHWDeviceContext *ctx, AVBufferRef **buf, size_t imp_size
return AVERROR_EXTERNAL;
}
vkGetBufferMemoryRequirements(hwctx->act_dev, vkbuf->buf, &req);
req_desc.buffer = vkbuf->buf;
err = alloc_mem(ctx, &req, flags, alloc_pnext, &vkbuf->flags, &vkbuf->mem);
vkGetBufferMemoryRequirements2(hwctx->act_dev, &req_desc, &req);
/* In case the implementation prefers/requires dedicated allocation */
use_ded_mem = ded_req.prefersDedicatedAllocation |
ded_req.requiresDedicatedAllocation;
if (use_ded_mem)
ded_alloc.buffer = vkbuf->buf;
err = alloc_mem(ctx, &req.memoryRequirements, flags,
use_ded_mem ? &ded_alloc : (void *)ded_alloc.pNext,
&vkbuf->flags, &vkbuf->mem);
if (err)
return err;