imageGetSize now takes an additional mip num argument

mindstab · May 30, 2023 · ce8c1e1 · ce8c1e1
1 parent ec02df8
commit ce8c1e1
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Showing 2 changed files with 3 additions and 2 deletions.
diff --git a/include/bimg/bimg.h b/include/bimg/bimg.h
@@ -285,6 +285,7 @@ namespace bimg
 		, bool _hasMips
 		, uint16_t _numLayers
 		, TextureFormat::Enum _format
+		, uint8_t _numMips = 0
 		);
 
 	///

diff --git a/src/image.cpp b/src/image.cpp
@@ -316,7 +316,7 @@ namespace bimg
 		return numMips;
 	}
 
-	uint32_t imageGetSize(TextureInfo* _info, uint16_t _width, uint16_t _height, uint16_t _depth, bool _cubeMap, bool _hasMips, uint16_t _numLayers, TextureFormat::Enum _format)
+	uint32_t imageGetSize(TextureInfo* _info, uint16_t _width, uint16_t _height, uint16_t _depth, bool _cubeMap, bool _hasMips, uint16_t _numLayers, TextureFormat::Enum _format, uint8_t _numMips)
 	{
 		const ImageBlockInfo& blockInfo = getBlockInfo(_format);
 		const uint8_t  bpp         = blockInfo.bitsPerPixel;
@@ -329,7 +329,7 @@ namespace bimg
 		_width  = bx::max<uint16_t>(blockWidth  * minBlockX, ( (_width  + blockWidth  - 1) / blockWidth)*blockWidth);
 		_height = bx::max<uint16_t>(blockHeight * minBlockY, ( (_height + blockHeight - 1) / blockHeight)*blockHeight);
 		_depth  = bx::max<uint16_t>(1, _depth);
-		const uint8_t  numMips = calcNumMips(_hasMips, _width, _height, _depth);
+		const uint8_t  numMips = _numMips > 0 ? _numMips : calcNumMips(_hasMips, _width, _height, _depth);
 		const uint32_t sides   = _cubeMap ? 6 : 1;
 
 		uint32_t width  = _width;