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Store mip tail info in virtual texture class

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This commit is contained in:
Sascha Willems 2020-07-14 07:51:07 +02:00
parent 187606a2ea
commit 447688980e
1 changed files with 13 additions and 5 deletions
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18
examples/texturesparseresidency/texturesparseresidency.cpp
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@ -105,6 +105,12 @@ struct VirtualTexture
uint32_t mipTailStart; // First mip level in mip tail
VkSparseImageMemoryRequirements sparseImageMemoryRequirements; // @todo: Comment
// @todo: comment
struct MipTailInfo {
bool singleMipTail;
bool alingedMipSize;
} mipTailInfo;
VirtualTexturePage* addPage(VkOffset3D offset, VkExtent3D extent, const VkDeviceSize size, const uint32_t mipLevel, uint32_t layer)
{
VirtualTexturePage newPage;
@ -385,11 +391,11 @@ public:
texture.sparseImageMemoryRequirements = sparseMemoryReq;
// Check if the format has a single mip tail for all layers or one mip tail for each layer
// The mip tail contains all mip levels > sparseMemoryReq.imageMipTailFirstLod
bool singleMipTail = sparseMemoryReq.formatProperties.flags & VK_SPARSE_IMAGE_FORMAT_SINGLE_MIPTAIL_BIT;
// Check if the format has a single mip tail for all layers or one mip tail for each layer
// @todo: Comment
bool alingedMipSize = sparseMemoryReq.formatProperties.flags & VK_SPARSE_IMAGE_FORMAT_ALIGNED_MIP_SIZE_BIT;
texture.mipTailInfo.singleMipTail = sparseMemoryReq.formatProperties.flags & VK_SPARSE_IMAGE_FORMAT_SINGLE_MIPTAIL_BIT;
texture.mipTailInfo.alingedMipSize = sparseMemoryReq.formatProperties.flags & VK_SPARSE_IMAGE_FORMAT_ALIGNED_MIP_SIZE_BIT;
// Sparse bindings for each mip level of all layers outside of the mip tail
for (uint32_t layer = 0; layer < texture.layerCount; layer++)
@ -444,8 +450,10 @@ public:
}
}
// Check if format has one mip tail per layer
if ((!singleMipTail) && (sparseMemoryReq.imageMipTailFirstLod < texture.mipLevels))
// @todo: proper comment
// @todo: store in mip tail and properly release
// @todo: Only one block for single mip tail
if ((!texture.mipTailInfo.singleMipTail) && (sparseMemoryReq.imageMipTailFirstLod < texture.mipLevels))
{
// Allocate memory for the mip tail
VkMemoryAllocateInfo allocInfo = vks::initializers::memoryAllocateInfo();