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hwcontext_vulkan: use dedicated allocation for buffers when necessary
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@ -2663,7 +2663,7 @@ static int create_buf(AVHWDeviceContext *ctx, AVBufferRef **buf, size_t imp_size
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{
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int err;
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VkResult ret;
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VkMemoryRequirements req;
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int use_ded_mem;
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AVVulkanDeviceContext *hwctx = ctx->hwctx;
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VulkanDevicePriv *p = ctx->internal->priv;
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@ -2674,6 +2674,21 @@ static int create_buf(AVHWDeviceContext *ctx, AVBufferRef **buf, size_t imp_size
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.sharingMode = VK_SHARING_MODE_EXCLUSIVE,
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};
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VkBufferMemoryRequirementsInfo2 req_desc = {
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.sType = VK_STRUCTURE_TYPE_BUFFER_MEMORY_REQUIREMENTS_INFO_2,
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};
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VkMemoryDedicatedAllocateInfo ded_alloc = {
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.sType = VK_STRUCTURE_TYPE_MEMORY_DEDICATED_ALLOCATE_INFO,
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.pNext = alloc_pnext,
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};
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VkMemoryDedicatedRequirements ded_req = {
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.sType = VK_STRUCTURE_TYPE_MEMORY_DEDICATED_REQUIREMENTS,
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};
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VkMemoryRequirements2 req = {
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.sType = VK_STRUCTURE_TYPE_MEMORY_REQUIREMENTS_2,
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.pNext = &ded_req,
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};
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ImageBuffer *vkbuf = av_mallocz(sizeof(*vkbuf));
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if (!vkbuf)
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return AVERROR(ENOMEM);
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@ -2695,9 +2710,19 @@ static int create_buf(AVHWDeviceContext *ctx, AVBufferRef **buf, size_t imp_size
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return AVERROR_EXTERNAL;
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}
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vkGetBufferMemoryRequirements(hwctx->act_dev, vkbuf->buf, &req);
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req_desc.buffer = vkbuf->buf;
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err = alloc_mem(ctx, &req, flags, alloc_pnext, &vkbuf->flags, &vkbuf->mem);
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vkGetBufferMemoryRequirements2(hwctx->act_dev, &req_desc, &req);
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/* In case the implementation prefers/requires dedicated allocation */
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use_ded_mem = ded_req.prefersDedicatedAllocation |
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ded_req.requiresDedicatedAllocation;
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if (use_ded_mem)
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ded_alloc.buffer = vkbuf->buf;
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err = alloc_mem(ctx, &req.memoryRequirements, flags,
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use_ded_mem ? &ded_alloc : (void *)ded_alloc.pNext,
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&vkbuf->flags, &vkbuf->mem);
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if (err)
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return err;
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