Merge branch 'master' into windows-unicode

1 files changed, 34 insertions, 0 deletions

diff --git a/Source/Core/VideoCommon/Src/GenericTextureDecoder.cpp b/Source/Core/VideoCommon/Src/GenericTextureDecoder.cpp
index ad7cfeebf9..7546511515 100644
--- a/Source/Core/VideoCommon/Src/GenericTextureDecoder.cpp
+++ b/Source/Core/VideoCommon/Src/GenericTextureDecoder.cpp
@@ -1442,6 +1442,40 @@ 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