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Fix mip calculation for compressed formats. (#94)

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This commit is contained in:
Xi Ma Chen
2026-04-23 13:54:13 -07:00
committed by GitHub
parent 6fa3a8b209
commit 60d8bd454c
1 changed files with 18 additions and 18 deletions
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36
src/image.cpp
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@@ -334,8 +334,8 @@ namespace bimg
const uint16_t minBlockY = blockInfo.minBlockY;
const uint8_t blockSize = blockInfo.blockSize;
_width = bx::max<uint16_t>(blockWidth * minBlockX, ( (_width + blockWidth - 1) / blockWidth)*blockWidth);
_height = bx::max<uint16_t>(blockHeight * minBlockY, ( (_height + blockHeight - 1) / blockHeight)*blockHeight);
_width = bx::max<uint16_t>(1, _width);
_height = bx::max<uint16_t>(1, _height);
_depth = bx::max<uint16_t>(1, _depth);
const uint8_t numMips = calcNumMips(_hasMips, _width, _height, _depth);
const uint32_t sides = _cubeMap ? 6 : 1;
@@ -347,11 +347,11 @@ namespace bimg
for (uint32_t lod = 0; lod < numMips; ++lod)
{
width = bx::max<uint32_t>(blockWidth * minBlockX, ( (width + blockWidth - 1) / blockWidth )*blockWidth);
height = bx::max<uint32_t>(blockHeight * minBlockY, ( (height + blockHeight - 1) / blockHeight)*blockHeight);
uint32_t mipMidth = bx::max<uint32_t>(blockWidth * minBlockX, ( (width + blockWidth - 1) / blockWidth )*blockWidth);
uint32_t mipHeight = bx::max<uint32_t>(blockHeight * minBlockY, ( (height + blockHeight - 1) / blockHeight)*blockHeight);
depth = bx::max<uint32_t>(1, depth);
size += uint32_t(uint64_t(width/blockWidth * height/blockHeight * depth)*blockSize * sides);
size += uint32_t(uint64_t(mipMidth/blockWidth * mipHeight/blockHeight * depth)*blockSize * sides);
width >>= 1;
height >>= 1;
@@ -5324,11 +5324,11 @@ namespace bimg
for (uint8_t lod = 0, num = _imageContainer.m_numMips; lod < num; ++lod)
{
width = bx::max<uint32_t>(blockWidth * minBlockX, ( (width + blockWidth - 1) / blockWidth )*blockWidth);
height = bx::max<uint32_t>(blockHeight * minBlockY, ( (height + blockHeight - 1) / blockHeight)*blockHeight);
uint32_t mipWidth = bx::max<uint32_t>(blockWidth * minBlockX, ( (width + blockWidth - 1) / blockWidth )*blockWidth);
uint32_t mipHeight = bx::max<uint32_t>(blockHeight * minBlockY, ( (height + blockHeight - 1) / blockHeight)*blockHeight);
depth = bx::max<uint32_t>(1, depth);
const uint32_t mipSize = width/blockWidth * height/blockHeight * depth * blockSize;
const uint32_t mipSize = mipWidth/blockWidth * mipHeight/blockHeight * depth * blockSize;
if (_imageContainer.m_ktx)
{
@@ -5347,8 +5347,8 @@ namespace bimg
if (side == _side
&& lod == _lod)
{
_mip.m_width = width;
_mip.m_height = height;
_mip.m_width = mipWidth;
_mip.m_height = mipHeight;
_mip.m_depth = depth;
_mip.m_blockSize = blockSize;
_mip.m_size = mipSize;
@@ -5381,17 +5381,17 @@ namespace bimg
{
BX_ASSERT(offset <= _size, "Reading past size of data buffer! (offset %d, size %d)", offset, _size);
width = bx::max<uint32_t>(blockWidth * minBlockX, ( (width + blockWidth - 1) / blockWidth )*blockWidth);
height = bx::max<uint32_t>(blockHeight * minBlockY, ( (height + blockHeight - 1) / blockHeight)*blockHeight);
uint32_t mipWidth = bx::max<uint32_t>(blockWidth * minBlockX, ( (width + blockWidth - 1) / blockWidth )*blockWidth);
uint32_t mipHeight = bx::max<uint32_t>(blockHeight * minBlockY, ( (height + blockHeight - 1) / blockHeight)*blockHeight);
depth = bx::max<uint32_t>(1, depth);
uint32_t mipSize = width/blockWidth * height/blockHeight * depth * blockSize;
uint32_t mipSize = mipWidth/blockWidth * mipHeight/blockHeight * depth * blockSize;
if (side == _side
&& lod == _lod)
{
_mip.m_width = width;
_mip.m_height = height;
_mip.m_width = mipWidth;
_mip.m_height = mipHeight;
_mip.m_depth = depth;
_mip.m_blockSize = blockSize;
_mip.m_size = mipSize;
@@ -6005,11 +6005,11 @@ namespace bimg
for (uint8_t lod = 0; lod < _numMips && _err->isOk(); ++lod)
{
width = bx::max<uint32_t>(blockWidth * minBlockX, ( (width + blockWidth - 1) / blockWidth )*blockWidth);
height = bx::max<uint32_t>(blockHeight * minBlockY, ( (height + blockHeight - 1) / blockHeight)*blockHeight);
uint32_t mipWidth = bx::max<uint32_t>(blockWidth * minBlockX, ( (width + blockWidth - 1) / blockWidth )*blockWidth);
uint32_t mipHeight = bx::max<uint32_t>(blockHeight * minBlockY, ( (height + blockHeight - 1) / blockHeight)*blockHeight);
depth = bx::max<uint32_t>(1, depth);
const uint32_t mipSize = width/blockWidth * height/blockHeight * depth * blockSize;
const uint32_t mipSize = mipWidth/blockWidth * mipHeight/blockHeight * depth * blockSize;
const uint32_t size = numSides == 6 && numLayers == 1 ? mipSize : mipSize * numSides * numLayers;
total += bx::write(_writer, size, _err);