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Fixed texture size calculation.

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This commit is contained in:
Branimir Karadžić 2015-02-02 20:30:57 -08:00
parent c9bc550758
commit 8942628ec1
1 changed files with 12 additions and 10 deletions
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22
src/bgfx.cpp
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@ -2311,22 +2311,24 @@ again:
void calcTextureSize(TextureInfo& _info, uint16_t _width, uint16_t _height, uint16_t _depth, uint8_t _numMips, TextureFormat::Enum _format)
{
_width = bx::uint32_max(1, _width);
_height = bx::uint32_max(1, _height);
_depth = bx::uint32_max(1, _depth);
const ImageBlockInfo& blockInfo = getBlockInfo(_format);
const uint8_t bpp = blockInfo.bitsPerPixel;
const uint32_t blockWidth = blockInfo.blockWidth;
const uint32_t blockHeight = blockInfo.blockHeight;
const uint32_t minBlockX = blockInfo.minBlockX;
const uint32_t minBlockY = blockInfo.minBlockY;
_numMips = bx::uint32_max(1, _numMips);
uint32_t width = _width;
uint32_t height = _height;
uint32_t depth = _depth;
uint32_t bpp = getBitsPerPixel(_format);
uint32_t width = bx::uint32_max(1, _width);
uint32_t height = bx::uint32_max(1, _height);
uint32_t depth = bx::uint32_max(1, _depth);
uint32_t size = 0;
for (uint32_t lod = 0; lod < _numMips; ++lod)
{
width = bx::uint32_max(1, width);
height = bx::uint32_max(1, height);
width = bx::uint32_max(blockWidth * minBlockX, ( (width + blockWidth - 1) / blockWidth )*blockWidth);
height = bx::uint32_max(blockHeight * minBlockY, ( (height + blockHeight - 1) / blockHeight)*blockHeight);
depth = bx::uint32_max(1, depth);
size += width*height*depth*bpp/8;