The-Homebrew-Cloud/dolphin
2
0
Fork 0
mirror of https://github.com/dolphin-emu/dolphin.git synced 2025-06-13 00:58:29 +02:00
Code Issues Packages Projects Releases Wiki Activity

TextureDecoder: Move XFB decoding to Common

Browse Source 
This was previously missing for generic (which is used on ARM).
This commit is contained in:
Stenzek
2019-03-24 13:10:01 +10:00
parent 4b1adab785
commit dbaba0062a
4 changed files with 44 additions and 31 deletions
Download Patch File Download Diff File Expand all files Collapse all files

38
Source/Core/VideoCommon/TextureDecoder_Common.cpp
View File

@ -751,3 +751,41 @@ void TexDecoder_DecodeRGBA8FromTmem(u8* dst, const u8* src_ar, const u8* src_gb,
}
}
}
void TexDecoder_DecodeXFB(u8* dst, const u8* src, u32 width, u32 height, u32 stride)
{
const u8* src_ptr = src;
u8* dst_ptr = dst;
for (u32 y = 0; y < height; y++)
{
const u8* row_ptr = src_ptr;
for (u32 x = 0; x < width; x += 2)
{
// We do this one color sample (aka 2 RGB pixels) at a time
int Y1 = int(*(row_ptr++)) - 16;
int U = int(*(row_ptr++)) - 128;
int Y2 = int(*(row_ptr++)) - 16;
int V = int(*(row_ptr++)) - 128;
// We do the inverse BT.601 conversion for YCbCr to RGB
// http://www.equasys.de/colorconversion.html#YCbCr-RGBColorFormatConversion
u8 R1 = static_cast<u8>(MathUtil::Clamp(int(1.164f * Y1 + 1.596f * V), 0, 255));
u8 G1 = static_cast<u8>(MathUtil::Clamp(int(1.164f * Y1 - 0.392f * U - 0.813f * V), 0, 255));
u8 B1 = static_cast<u8>(MathUtil::Clamp(int(1.164f * Y1 + 2.017f * U), 0, 255));
u8 R2 = static_cast<u8>(MathUtil::Clamp(int(1.164f * Y2 + 1.596f * V), 0, 255));
u8 G2 = static_cast<u8>(MathUtil::Clamp(int(1.164f * Y2 - 0.392f * U - 0.813f * V), 0, 255));
u8 B2 = static_cast<u8>(MathUtil::Clamp(int(1.164f * Y2 + 2.017f * U), 0, 255));
u32 rgba = 0xff000000 | B1 << 16 | G1 << 8 | R1;
std::memcpy(dst_ptr, &rgba, sizeof(rgba));
dst_ptr += sizeof(rgba);
rgba = 0xff000000 | B2 << 16 | G2 << 8 | R2;
std::memcpy(dst_ptr, &rgba, sizeof(rgba));
dst_ptr += sizeof(rgba);
}
src_ptr += stride;
}
}