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Comment on how cube map arrays are stored in ktx, loop structure

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This commit is contained in:
Sascha Willems 2020-07-19 09:58:16 +02:00
parent dceb349849
commit 7805b8bbe0
1 changed files with 25 additions and 3 deletions
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28
examples/texturecubemaparray/texturecubemaparray.cpp
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@ -219,9 +219,31 @@ public:
std::vector<VkBufferImageCopy> bufferCopyRegions; std::vector<VkBufferImageCopy> bufferCopyRegions;
uint32_t offset = 0; uint32_t offset = 0;
// Setup buffer copy regions to copy the data from the ktx file to our image /*
for (uint32_t layer = 0; layer < ktxTexture->numLayers; layer++) { Setup buffer copy regions to copy the data from the ktx file to our image
for (uint32_t face = 0; face < 6; face++) { Cube map arrays in ktx are stored with a layout like this:
- Mip Level 0
- Layer 0 (= Cube map 0)
- Face +X
- Face -X
- Face +Y
- Face -Y
- Face +Z
- Face -Z
- Layer 1 (= Cube map 1)
- Face +X
...
- Mip Level 1
- Layer 0 (= Cube map 0)
- Face +X
...
- Layer 1 (= Cube map 1)
- Face +X
...
*/
for (uint32_t face = 0; face < 6; face++) {
for (uint32_t layer = 0; layer < ktxTexture->numLayers; layer++) {
for (uint32_t level = 0; level < ktxTexture->numLevels; level++) { for (uint32_t level = 0; level < ktxTexture->numLevels; level++) {
ktx_size_t offset; ktx_size_t offset;
KTX_error_code ret = ktxTexture_GetImageOffset(ktxTexture, level, layer, face, &offset); KTX_error_code ret = ktxTexture_GetImageOffset(ktxTexture, level, layer, face, &offset);