Function imageDecodeToRgba32f

Source/3rdParty/bimg/src/image.cpp:5136–5229

	}

	void imageDecodeToRgba32f(bx::AllocatorI* _allocator, void* _dst, const void* _src, uint32_t _width, uint32_t _height, uint32_t _depth, uint32_t _dstPitch, TextureFormat::Enum _srcFormat)
	{
		const uint8_t* src = (const uint8_t*)_src;
		uint8_t* dst = (uint8_t*)_dst;

		const uint32_t srcBpp   = s_imageBlockInfo[_srcFormat].bitsPerPixel;
		const uint32_t srcPitch = _width*srcBpp/8;

		for (uint32_t zz = 0; zz < _depth; ++zz, src += _height*srcPitch, dst += _height*_dstPitch)
		{
			switch (_srcFormat)
			{
			case TextureFormat::BC5:
				{
					uint32_t width  = _width/4;
					uint32_t height = _height/4;

					const uint8_t* srcData = src;

					for (uint32_t yy = 0; yy < height; ++yy)
					{
						for (uint32_t xx = 0; xx < width; ++xx)
						{
							uint8_t temp[16*4];

							decodeBlockDxt45A(temp+2, srcData);
							srcData += 8;
							decodeBlockDxt45A(temp+1, srcData);
							srcData += 8;

							for (uint32_t ii = 0; ii < 16; ++ii)
							{
								float nx = temp[ii*4+2]*2.0f/255.0f - 1.0f;
								float ny = temp[ii*4+1]*2.0f/255.0f - 1.0f;
								float nz = bx::sqrt(1.0f - nx*nx - ny*ny);

								const uint32_t offset = (yy*4 + ii/4)*_width*16 + (xx*4 + ii%4)*16;
								float* block = (float*)&dst[offset];
								block[0] = nx;
								block[1] = ny;
								block[2] = nz;
								block[3] = 0.0f;
							}
						}
					}
				}
				break;

			case TextureFormat::BC6H:
				{
					uint32_t width  = _width/4;
					uint32_t height = _height/4;

					const uint8_t* srcData = src;

					for (uint32_t yy = 0; yy < height; ++yy)
					{
						for (uint32_t xx = 0; xx < width; ++xx)