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Merge pull request #10559 from jherico/fix_compressed_ktx_loading

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Fix compressed KTX loading
This commit is contained in:
Brad Davis 2017-05-26 12:46:11 -07:00 committed by GitHub
commit 952d3629ec
2 changed files with 4 additions and 3 deletions
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5
libraries/ktx/src/khronos/KHR.h
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@ -212,10 +212,11 @@ namespace khronos {
template <uint32_t ALIGNMENT>
inline uint32_t evalAlignedCompressedBlockCount(uint32_t value) {
// FIXME add static assert that ALIGNMENT is a power of 2
return (value + (ALIGNMENT - 1) / ALIGNMENT);
static uint32_t ALIGNMENT_REMAINDER = ALIGNMENT - 1;
return (value + ALIGNMENT_REMAINDER) / ALIGNMENT;
}
inline uint8_t evalBlockAlignemnt(InternalFormat format, uint32_t value) {
inline uint32_t evalCompressedBlockCount(InternalFormat format, uint32_t value) {
switch (format) {
case InternalFormat::COMPRESSED_SRGB_S3TC_DXT1_EXT: // BC1
case InternalFormat::COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT: // BC1A

2
libraries/ktx/src/ktx/KTX.cpp
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@ -30,7 +30,7 @@ uint32_t Header::evalMaxDimension() const {
uint32_t Header::evalPixelOrBlockDimension(uint32_t pixelDimension) const {
if (isCompressed()) {
return khronos::gl::texture::evalBlockAlignemnt(getGLInternaFormat(), pixelDimension);
return khronos::gl::texture::evalCompressedBlockCount(getGLInternaFormat(), pixelDimension);
}
return pixelDimension;
}