diff options
Diffstat (limited to 'Source/Core/VideoCommon/Src/TextureDecoder.cpp')
| -rw-r--r-- | Source/Core/VideoCommon/Src/TextureDecoder.cpp | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/Source/Core/VideoCommon/Src/TextureDecoder.cpp b/Source/Core/VideoCommon/Src/TextureDecoder.cpp index 180c901730..44efcf8bae 100644 --- a/Source/Core/VideoCommon/Src/TextureDecoder.cpp +++ b/Source/Core/VideoCommon/Src/TextureDecoder.cpp @@ -2515,6 +2515,40 @@ void TexDecoder_DecodeTexel(u8 *dst, const u8 *src, int s, int t, int imageWidth } } +void TexDecoder_DecodeTexelRGBA8FromTmem(u8 *dst, const u8 *src_ar, const u8* src_gb, int s, int t, int imageWidth) +{ + u16 sBlk = s >> 2; + u16 tBlk = t >> 2; + u16 widthBlks = (imageWidth >> 2) + 1; // TODO: Looks wrong. Shouldn't this be ((imageWidth-1)>>2)+1 ? + u32 base_ar = (tBlk * widthBlks + sBlk) << 4; + u32 base_gb = (tBlk * widthBlks + sBlk) << 4; + u16 blkS = s & 3; + u16 blkT = t & 3; + u32 blk_off = (blkT << 2) + blkS; + + u32 offset_ar = (base_ar + blk_off) << 1; + u32 offset_gb = (base_gb + blk_off) << 1; + const u8* val_addr_ar = src_ar + offset_ar; + const u8* val_addr_gb = src_gb + offset_gb; + + dst[3] = val_addr_ar[0]; // A + dst[0] = val_addr_ar[1]; // R + dst[1] = val_addr_gb[0]; // G + dst[2] = val_addr_gb[1]; // B +} + +PC_TexFormat TexDecoder_DecodeRGBA8FromTmem(u8* dst, const u8 *src_ar, const u8 *src_gb, int width, int height) +{ + // TODO for someone who cares: Make this less slow! + for (int y = 0; y < height; ++y) + for (int x = 0; x < width; ++x) + { + TexDecoder_DecodeTexelRGBA8FromTmem(dst, src_ar, src_gb, x, y, width-1); + dst += 4; + } + + return PC_TEX_FMT_RGBA32; +} const char* texfmt[] = { // pixel |