Remove unnecessary Src/ folders

1 files changed, 1435 insertions, 0 deletions

diff --git a/Source/Core/VideoBackends/Software/TextureEncoder.cpp b/Source/Core/VideoBackends/Software/TextureEncoder.cpp
new file mode 100644
index 0000000000..07bb162cd6
--- /dev/null
+++ b/Source/Core/VideoBackends/Software/TextureEncoder.cpp
@@ -0,0 +1,1435 @@
+// Copyright 2013 Dolphin Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#include "TextureEncoder.h"
+#include "EfbInterface.h"
+#include "BPMemLoader.h"
+
+#include "LookUpTables.h"
+#include "TextureDecoder.h"
+
+
+namespace TextureEncoder
+{
+
+inline void RGBA_to_RGBA8(u8 *src, u8 &r, u8 &g, u8 &b, u8 &a)
+{
+	u32 srcColor = *(u32*)src;
+	a = Convert6To8(srcColor & 0x3f);
+	b = Convert6To8((srcColor >> 6) & 0x3f);
+	g = Convert6To8((srcColor >> 12)& 0x3f);
+	r = Convert6To8((srcColor >> 18)& 0x3f);
+}
+
+inline void RGBA_to_RGB8(u8 *src, u8 &r, u8 &g, u8 &b)
+{
+	u32 srcColor = *(u32*)src;
+	b = Convert6To8((srcColor >> 6) & 0x3f);
+	g = Convert6To8((srcColor >> 12)& 0x3f);
+	r = Convert6To8((srcColor >> 18)& 0x3f);
+}
+
+inline u8 RGB8_to_I(u8 r, u8 g, u8 b)
+{
+	// values multiplied by 256 to keep math integer
+	u16 val = 4096 + 66 * r + 129 * g + 25 * b;
+	return val >> 8;
+}
+
+// box filter sampling averages 4 samples with the source texel being the top left of the box
+// components are scaled to the range 0-255 after all samples are taken
+
+inline void boxfilterRGBA_to_RGBA8(u8 *src, u8 &r, u8 &g, u8 &b, u8 &a)
+{
+	u16 r16 = 0, g16 = 0, b16 = 0, a16 = 0;
+
+	for (int y = 0; y < 2; y++)
+	{
+		for (int x = 0; x < 2; x++)
+		{
+			u32 srcColor = *(u32*)src;
+
+			a16 += srcColor & 0x3f;
+			b16 += (srcColor >> 6) & 0x3f;
+			g16 += (srcColor >> 12) & 0x3f;
+			r16 += (srcColor >> 18) & 0x3f;
+
+			src += 3; // move to next pixel
+		}
+		src += (640 - 2) * 3; // move to next line
+	}
+
+	r = r16 + (r16 >> 6);
+	g = g16 + (g16 >> 6);
+	b = b16 + (b16 >> 6);
+	a = a16 + (a16 >> 6);
+}
+
+inline void boxfilterRGBA_to_RGB8(u8 *src, u8 &r, u8 &g, u8 &b)
+{
+	u16 r16 = 0, g16 = 0, b16 = 0;
+
+	for (int y = 0; y < 2; y++)
+	{
+		for (int x = 0; x < 2; x++)
+		{
+			u32 srcColor = *(u32*)src;
+
+			b16 += (srcColor >> 6) & 0x3f;
+			g16 += (srcColor >> 12) & 0x3f;
+			r16 += (srcColor >> 18) & 0x3f;
+
+			src += 3; // move to next pixel
+		}
+		src += (640 - 2) * 3; // move to next line
+	}
+
+	r = r16 + (r16 >> 6);
+	g = g16 + (g16 >> 6);
+	b = b16 + (b16 >> 6);
+}
+
+inline void boxfilterRGBA_to_x8(u8 *src, u8 &x8, int shift)
+{
+	u16 x16 = 0;
+
+	for (int y = 0; y < 2; y++)
+	{
+		for (int x = 0; x < 2; x++)
+		{
+			u32 srcColor = *(u32*)src;
+
+			x16 += (srcColor >> shift) & 0x3f;
+
+			src += 3; // move to next pixel
+		}
+		src += (640 - 2) * 3; // move to next line
+	}
+
+	x8 = x16 + (x16 >> 6);
+}
+
+inline void boxfilterRGBA_to_xx8(u8 *src, u8 &x1, u8 &x2, int shift1, int shift2)
+{
+	u16 x16_1 = 0;
+	u16 x16_2 = 0;
+
+	for (int y = 0; y < 2; y++)
+	{
+		for (int x = 0; x < 2; x++)
+		{
+			u32 srcColor = *(u32*)src;
+
+			x16_1 += (srcColor >> shift1) & 0x3f;
+			x16_2 += (srcColor >> shift2) & 0x3f;
+
+			src += 3; // move to next pixel
+		}
+		src += (640 - 2) * 3; // move to next line
+	}
+
+	x1 = x16_1 + (x16_1 >> 6);
+	x2 = x16_2 + (x16_2 >> 6);
+}
+
+inline void boxfilterRGB_to_RGB8(u8 *src, u8 &r, u8 &g, u8 &b)
+{
+	u16 r16 = 0, g16 = 0, b16 = 0;
+
+	for (int y = 0; y < 2; y++)
+	{
+		for (int x = 0; x < 2; x++)
+		{
+			b16 += src[0];
+			g16 += src[1];
+			r16 += src[2];
+
+			src += 3; // move to next pixel
+		}
+		src += (640 - 2) * 3; // move to next line
+	}
+
+	r = r16 >> 2;
+	g = g16 >> 2;
+	b = b16 >> 2;
+}
+
+inline void boxfilterRGB_to_x8(u8 *src, u8 &x8, int comp)
+{
+	u16 x16 = 0;
+
+	for (int y = 0; y < 2; y++)
+	{
+		for (int x = 0; x < 2; x++)
+		{
+
+			x16 += src[comp];
+
+			src += 3; // move to next pixel
+		}
+		src += (640 - 2) * 3; // move to next line
+	}
+
+	x8 = x16 >> 2;
+}
+
+inline void boxfilterRGB_to_xx8(u8 *src, u8 &x1, u8 &x2, int comp1, int comp2)
+{
+	u16 x16_1 = 0;
+	u16 x16_2 = 0;
+
+	for (int y = 0; y < 2; y++)
+	{
+		for (int x = 0; x < 2; x++)
+		{
+
+			x16_1 += src[comp1];
+			x16_2 += src[comp2];
+
+			src += 3; // move to next pixel
+		}
+		src += (640 - 2) * 3; // move to next line
+	}
+
+	x1 = x16_1 >> 2;
+	x2 = x16_2 >> 2;
+}
+
+void SetBlockDimensions(int blkWidthLog2, int blkHeightLog2, u16 &sBlkCount, u16 &tBlkCount, u16 &sBlkSize, u16 &tBlkSize)
+{
+	// if half_scale is 1 then the size is cut in half
+	u32 width = bpmem.copyTexSrcWH.x >> bpmem.triggerEFBCopy.half_scale;
+	u32 height = bpmem.copyTexSrcWH.y >> bpmem.triggerEFBCopy.half_scale;
+
+	sBlkCount = (width >> blkWidthLog2) + 1;
+	tBlkCount = (height >> blkHeightLog2) + 1;
+
+	sBlkSize = 1 << blkWidthLog2;
+	tBlkSize = 1 << blkHeightLog2;
+}
+
+void SetSpans(int sBlkSize, int tBlkSize, s32 &tSpan, s32 &sBlkSpan, s32 &tBlkSpan, s32 &writeStride)
+{
+	// width is 1 less than the number of pixels of width
+	u32 width = bpmem.copyTexSrcWH.x >> bpmem.triggerEFBCopy.half_scale;
+	u32 alignedWidth = (width + sBlkSize) & (~(sBlkSize-1));
+
+	u32 readStride = 3 << bpmem.triggerEFBCopy.half_scale;
+
+	tSpan = (640 - sBlkSize) * readStride; // bytes to advance src pointer after each row of texels in a block
+	sBlkSpan = ((-640 * tBlkSize) + sBlkSize) * readStride; // bytes to advance src pointer after each block
+	tBlkSpan = ((640 * tBlkSize) - alignedWidth) * readStride; // bytes to advance src pointer after each row of blocks
+
+	writeStride = bpmem.copyMipMapStrideChannels * 32;
+}
+
+#define ENCODE_LOOP_BLOCKS									\
+		for (int tBlk = 0; tBlk < tBlkCount; tBlk++) {		\
+			dst = dstBlockStart;							\
+			for (int sBlk = 0; sBlk < sBlkCount; sBlk++) {	\
+				for (int t = 0; t < tBlkSize; t++) {		\
+					for (int s = 0; s < sBlkSize; s++) {	\
+
+
+#define ENCODE_LOOP_SPANS									\
+					}										\
+					src += tSpan;							\
+				}											\
+				src += sBlkSpan;							\
+			}												\
+			src += tBlkSpan;								\
+			dstBlockStart += writeStride;					\
+		}													\
+
+#define ENCODE_LOOP_SPANS2									\
+					}										\
+					src += tSpan;							\
+				}											\
+				src += sBlkSpan;							\
+				dst += 32;									\
+			}												\
+			src += tBlkSpan;								\
+			dstBlockStart += writeStride;					\
+		}													\
+
+void EncodeRGBA6(u8 *dst, u8 *src, u32 format)
+{
+	u16 sBlkCount, tBlkCount, sBlkSize, tBlkSize;
+	s32 tSpan, sBlkSpan, tBlkSpan, writeStride;
+	u8 r, g, b, a;
+	u32 readStride = 3;
+	u8 *dstBlockStart = dst;
+
+	switch(format)
+	{
+	case GX_TF_I4:
+		SetBlockDimensions(3, 3, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		sBlkSize /= 2;
+		ENCODE_LOOP_BLOCKS
+		{
+			RGBA_to_RGB8(src, r, g, b);
+			src += readStride;
+			*dst = RGB8_to_I(r, g, b) & 0xf0;
+
+			RGBA_to_RGB8(src, r, g, b);
+			src += readStride;
+			*dst |= RGB8_to_I(r, g, b) >> 4;
+			dst++;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_TF_I8:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			RGBA_to_RGB8(src, r, g, b);
+			src += readStride;
+			*dst++ = RGB8_to_I(r, g, b);
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_TF_IA4:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			RGBA_to_RGBA8(src, r, g, b, a);
+			src += readStride;
+			*dst++ = (a & 0xf0) | (RGB8_to_I(r, g, b) >> 4);
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_TF_IA8:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			RGBA_to_RGBA8(src, r, g, b, a);
+			src += readStride;
+			*dst++ = a;
+			*dst++ = RGB8_to_I(r, g, b);
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_TF_RGB565:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			u32 srcColor = *(u32*)src;
+			src += readStride;
+
+			u16 val = ((srcColor >> 8) & 0xf800) | ((srcColor >> 7) & 0x07e0) | ((srcColor >> 7) & 0x001e);
+			*(u16*)dst = Common::swap16(val);
+			dst+=2;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_TF_RGB5A3:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			u32 srcColor = *(u32*)src;
+			src += readStride;
+
+			u16 alpha = (srcColor << 9) & 0x7000;
+			u16 val;
+			if (alpha == 0x7000) // 555
+				val = 0x8000 | ((srcColor >> 9) & 0x7c00) | ((srcColor >> 8) & 0x03e0) | ((srcColor >> 7) & 0x001e);
+			else // 4443
+				val = alpha | ((srcColor >> 12) & 0x0f00) | ((srcColor >> 10) & 0x00f0) | ((srcColor >> 8) & 0x000f);
+
+			*(u16*)dst = Common::swap16(val);
+			dst+=2;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_TF_RGBA8:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			RGBA_to_RGBA8(src, dst[1], dst[32], dst[33], dst[0]);
+			src += readStride;
+			dst += 2;
+		}
+		ENCODE_LOOP_SPANS2
+		break;
+
+	case GX_CTF_R4:
+		SetBlockDimensions(3, 3, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		sBlkSize /= 2;
+		ENCODE_LOOP_BLOCKS
+		{
+			u32 srcColor = *(u32*)src;
+			src += readStride;
+			*dst = (srcColor >> 16) & 0xf0;
+
+			srcColor = *(u32*)src;
+			src += readStride;
+			*dst |= (srcColor >> 20) & 0x0f;
+			dst++;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_RA4:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			u32 srcColor = *(u32*)src;
+			src += readStride;
+			*dst++ = ((srcColor << 2) & 0xf0) | ((srcColor >> 20) & 0x0f);
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_RA8:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			u32 srcColor = *(u32*)src;
+			src += readStride;
+			*dst++ = Convert6To8(srcColor & 0x3f);
+			*dst++ = Convert6To8((srcColor >> 18) & 0x3f);
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_A8:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			u32 srcColor = *(u32*)src;
+			*dst++ = Convert6To8(srcColor & 0x3f);
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_R8:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			u32 srcColor = *(u32*)src;
+			*dst++ = Convert6To8((srcColor >> 18) & 0x3f);
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_G8:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			u32 srcColor = *(u32*)src;
+			*dst++ = Convert6To8((srcColor >> 12) & 0x3f);
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_B8:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			u32 srcColor = *(u32*)src;
+			*dst++ = Convert6To8((srcColor >> 6) & 0x3f);
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_RG8:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			u32 srcColor = *(u32*)src;
+			src += readStride;
+			*dst++ = Convert6To8((srcColor >> 12) & 0x3f);
+			*dst++ = Convert6To8((srcColor >> 18) & 0x3f);
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_GB8:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			u32 srcColor = *(u32*)src;
+			src += readStride;
+			*dst++ = Convert6To8((srcColor >> 6) & 0x3f);
+			*dst++ = Convert6To8((srcColor >> 12) & 0x3f);
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	default:
+		PanicAlert("Unknown texture copy format: 0x%x\n", format);
+		break;
+	}
+}
+
+
+void EncodeRGBA6halfscale(u8 *dst, u8 *src, u32 format)
+{
+	u16 sBlkCount, tBlkCount, sBlkSize, tBlkSize;
+	s32 tSpan, sBlkSpan, tBlkSpan, writeStride;
+	u8 r, g, b, a;
+	u32 readStride = 6;
+	u8 *dstBlockStart = dst;
+
+	switch(format)
+	{
+	case GX_TF_I4:
+		SetBlockDimensions(3, 3, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		sBlkSize /= 2;
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGBA_to_RGB8(src, r, g, b);
+			src += readStride;
+			*dst = RGB8_to_I(r, g, b) & 0xf0;
+
+			boxfilterRGBA_to_RGB8(src, r, g, b);
+			src += readStride;
+			*dst |= RGB8_to_I(r, g, b) >> 4;
+			dst++;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_TF_I8:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGBA_to_RGB8(src, r, g, b);
+			src += readStride;
+			*dst++ = RGB8_to_I(r, g, b);
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_TF_IA4:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGBA_to_RGBA8(src, r, g, b, a);
+			src += readStride;
+			*dst++ = (a & 0xf0) | (RGB8_to_I(r, g, b) >> 4);
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_TF_IA8:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGBA_to_RGBA8(src, r, g, b, a);
+			src += readStride;
+			*dst++ = a;
+			*dst++ = RGB8_to_I(r, g, b);
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_TF_RGB565:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGBA_to_RGB8(src, r, g, b);
+			src += readStride;
+
+			u16 val = ((r << 8) & 0xf800) | ((g << 3) & 0x07e0) | ((b >> 3) & 0x001e);
+			*(u16*)dst = Common::swap16(val);
+			dst+=2;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_TF_RGB5A3:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGBA_to_RGBA8(src, r, g, b, a);
+			src += readStride;
+
+			u16 val;
+			if (a >= 224) // 5551
+				val = 0x8000 | ((r << 7) & 0x7c00) | ((g << 2) & 0x03e0) | ((b >> 3) & 0x001e);
+			else // 4443
+				val = ((a << 7) & 0x7000) | ((r << 4) & 0x0f00) | (g & 0x00f0) | ((b >> 4) & 0x000f);
+
+			*(u16*)dst = Common::swap16(val);
+			dst+=2;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_TF_RGBA8:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGBA_to_RGBA8(src, dst[1], dst[32], dst[33], dst[0]);
+			src += readStride;
+			dst += 2;
+		}
+		ENCODE_LOOP_SPANS2
+		break;
+
+	case GX_CTF_R4:
+		SetBlockDimensions(3, 3, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		sBlkSize /= 2;
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGBA_to_x8(src, r, 18);
+			src += readStride;
+			*dst = r & 0xf0;
+
+			boxfilterRGBA_to_x8(src, r, 18);
+			src += readStride;
+			*dst |= r >> 4;
+			dst++;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_RA4:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGBA_to_xx8(src, r, a, 18, 0);
+			src += readStride;
+			*dst++ = (a & 0xf0) | (r >> 4);
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_RA8:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGBA_to_xx8(src, r, a, 18, 0);
+			src += readStride;
+			*dst++ = a;
+			*dst++ = r;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_A8:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGBA_to_x8(src, a, 0);
+			*dst++ = a;
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_R8:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGBA_to_x8(src, r, 18);
+			*dst++ = r;
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_G8:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGBA_to_x8(src, g, 12);
+			*dst++ = g;
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_B8:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGBA_to_x8(src, b, 6);
+			*dst++ = b;
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_RG8:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGBA_to_xx8(src, r, g, 18, 12);
+			src += readStride;
+			*dst++ = g;
+			*dst++ = r;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_GB8:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGBA_to_xx8(src, g, b, 12, 6);
+			src += readStride;
+			*dst++ = b;
+			*dst++ = g;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	default:
+		PanicAlert("Unknown texture copy format: 0x%x\n", format);
+		break;
+	}
+}
+
+void EncodeRGB8(u8 *dst, u8 *src, u32 format)
+{
+	u16 sBlkCount, tBlkCount, sBlkSize, tBlkSize;
+	s32 tSpan, sBlkSpan, tBlkSpan, writeStride;
+	u32 readStride = 3;
+	u8 *dstBlockStart = dst;
+
+	switch(format)
+	{
+	case GX_TF_I4:
+		SetBlockDimensions(3, 3, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		sBlkSize /= 2;
+		ENCODE_LOOP_BLOCKS
+		{
+			*dst = RGB8_to_I(src[2], src[1], src[0]) & 0xf0;
+			src += readStride;
+
+			*dst |= RGB8_to_I(src[2], src[1], src[0]) >> 4;
+			src += readStride;
+			dst++;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_TF_I8:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			*dst++ = RGB8_to_I(src[2], src[1], src[0]);
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_TF_IA4:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			*dst++ = 0xf0 | (RGB8_to_I(src[2], src[1], src[0]) >> 4);
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_TF_IA8:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			*dst++ = 0xff;
+			*dst++ = RGB8_to_I(src[2], src[1], src[0]);
+
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_TF_RGB565:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			u16 val = ((src[2] << 8) & 0xf800) | ((src[1] << 3) & 0x07e0) | ((src[0] >> 3) & 0x001e);
+			*(u16*)dst = Common::swap16(val);
+			src += readStride;
+			dst+=2;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_TF_RGB5A3:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			u16 val = 0x8000 | ((src[2] << 7) & 0x7c00) | ((src[1] << 2) & 0x03e0) | ((src[0] >> 3) & 0x001e);
+			*(u16*)dst = Common::swap16(val);
+			src += readStride;
+			dst+=2;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_TF_RGBA8:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			dst[0] = 0xff;
+			dst[1] = src[2];
+			dst[32] = src[1];
+			dst[33] = src[0];
+			src += readStride;
+			dst += 2;
+		}
+		ENCODE_LOOP_SPANS2
+		break;
+
+	case GX_CTF_R4:
+		SetBlockDimensions(3, 3, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		sBlkSize /= 2;
+		ENCODE_LOOP_BLOCKS
+		{
+			*dst = src[2] & 0xf0;
+			src += readStride;
+
+			*dst |= src[2] >> 4;
+			src += readStride;
+
+			dst++;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_RA4:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			*dst++ = 0xf0 | (src[2] >> 4);
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_RA8:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			*dst++ = 0xff;
+			*dst++ = src[2];
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_A8:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			*dst++ = 0xff;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_R8:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			*dst++ = src[2];
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_G8:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			*dst++ = src[1];
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_B8:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			*dst++ = src[0];
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_RG8:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			*dst++ = src[1];
+			*dst++ = src[2];
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_GB8:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			*dst++ = src[0];
+			*dst++ = src[1];
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	default:
+		PanicAlert("Unknown texture copy format: 0x%x\n", format);
+		break;
+	}
+}
+
+void EncodeRGB8halfscale(u8 *dst, u8 *src, u32 format)
+{
+	u16 sBlkCount, tBlkCount, sBlkSize, tBlkSize;
+	s32 tSpan, sBlkSpan, tBlkSpan, writeStride;
+	u8 r, g, b;
+	u32 readStride = 6;
+	u8 *dstBlockStart = dst;
+
+	switch(format)
+	{
+	case GX_TF_I4:
+		SetBlockDimensions(3, 3, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		sBlkSize /= 2;
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGB_to_RGB8(src, r, g, b);
+			*dst = RGB8_to_I(r, g, b) & 0xf0;
+			src += readStride;
+
+			boxfilterRGB_to_RGB8(src, r, g, b);
+			*dst |= RGB8_to_I(r, g, b) >> 4;
+			src += readStride;
+			dst++;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_TF_I8:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGB_to_RGB8(src, r, g, b);
+			*dst++ = RGB8_to_I(r, g, b);
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_TF_IA4:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGB_to_RGB8(src, r, g, b);
+			*dst++ = 0xf0 | (RGB8_to_I(r, g, b) >> 4);
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_TF_IA8:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGB_to_RGB8(src, r, g, b);
+			*dst++ = 0xff;
+			*dst++ = RGB8_to_I(r, g, b);
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_TF_RGB565:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGB_to_RGB8(src, r, g, b);
+			u16 val = ((r << 8) & 0xf800) | ((g << 3) & 0x07e0) | ((b >> 3) & 0x001e);
+			*(u16*)dst = Common::swap16(val);
+			src += readStride;
+			dst+=2;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_TF_RGB5A3:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGB_to_RGB8(src, r, g, b);
+			u16 val = 0x8000 | ((r << 7) & 0x7c00) | ((g << 2) & 0x03e0) | ((b >> 3) & 0x001e);
+			*(u16*)dst = Common::swap16(val);
+			src += readStride;
+			dst+=2;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_TF_RGBA8:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGB_to_RGB8(src, r, g, b);
+			dst[0] = 0xff;
+			dst[1] = r;
+			dst[32] = g;
+			dst[33] = b;
+			src += readStride;
+			dst += 2;
+		}
+		ENCODE_LOOP_SPANS2
+		break;
+
+	case GX_CTF_R4:
+		SetBlockDimensions(3, 3, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		sBlkSize /= 2;
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGB_to_x8(src, r, 2);
+			*dst = r & 0xf0;
+			src += readStride;
+
+			boxfilterRGB_to_x8(src, r, 2);
+			*dst |= r >> 4;
+			src += readStride;
+
+			dst++;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_RA4:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGB_to_x8(src, r, 2);
+			*dst++ = 0xf0 | (r >> 4);
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_RA8:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGB_to_x8(src, r, 2);
+			*dst++ = 0xff;
+			*dst++ = r;
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_A8:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			*dst++ = 0xff;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_R8:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGB_to_x8(src, r, 2);
+			*dst++ = r;
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_G8:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGB_to_x8(src, g, 1);
+			*dst++ = g;
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_B8:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGB_to_x8(src, b, 0);
+			*dst++ = b;
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_RG8:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGB_to_xx8(src, r, g, 2, 1);
+			*dst++ = g;
+			*dst++ = r;
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_GB8:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGB_to_xx8(src, g, b, 1, 0);
+			*dst++ = b;
+			*dst++ = g;
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	default:
+		PanicAlert("Unknown texture copy format: 0x%x\n", format);
+		break;
+	}
+}
+
+void EncodeZ24(u8 *dst, u8 *src, u32 format)
+{
+	u16 sBlkCount, tBlkCount, sBlkSize, tBlkSize;
+	s32 tSpan, sBlkSpan, tBlkSpan, writeStride;
+	u32 readStride = 3;
+	u8 *dstBlockStart = dst;
+
+	switch(format)
+	{
+	case GX_TF_Z8:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			*dst++ = src[2];
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_TF_Z16:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			*dst++ = src[1];
+			*dst++ = src[2];
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_TF_Z24X8:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			dst[0] = 0xff;
+			dst[1] = src[2];
+			dst[32] = src[1];
+			dst[33] = src[0];
+			src += readStride;
+			dst += 2;
+		}
+		ENCODE_LOOP_SPANS2
+		break;
+
+	case GX_CTF_Z4:
+		SetBlockDimensions(3, 3, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		sBlkSize /= 2;
+		ENCODE_LOOP_BLOCKS
+		{
+			*dst = src[2] & 0xf0;
+			src += readStride;
+
+			*dst |= src[2] >> 4;
+			src += readStride;
+
+			dst++;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_Z8M:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			*dst++ = src[1];
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_Z8L:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			*dst++ = src[0];
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_Z16L:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			*dst++ = src[0];
+			*dst++ = src[1];
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	default:
+		PanicAlert("Unknown texture copy format: 0x%x\n", format);
+		break;
+	}
+}
+
+void EncodeZ24halfscale(u8 *dst, u8 *src, u32 format)
+{
+	u16 sBlkCount, tBlkCount, sBlkSize, tBlkSize;
+	s32 tSpan, sBlkSpan, tBlkSpan, writeStride;
+	u32 readStride = 6;
+	u8 r, g, b;
+	u8 *dstBlockStart = dst;
+
+	switch(format)
+	{
+	case GX_TF_Z8:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGB_to_x8(src, b, 2);
+			*dst++ = b;
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_TF_Z16:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGB_to_xx8(src, g, b, 1, 2);
+			*dst++ = b;
+			*dst++ = g;
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_TF_Z24X8:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGB_to_RGB8(src, dst[33], dst[32], dst[1]);
+			dst[0] = 255;
+			src += readStride;
+			dst += 2;
+		}
+		ENCODE_LOOP_SPANS2
+		break;
+
+	case GX_CTF_Z4:
+		SetBlockDimensions(3, 3, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		sBlkSize /= 2;
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGB_to_x8(src, b, 2);
+			*dst = b & 0xf0;
+			src += readStride;
+
+			boxfilterRGB_to_x8(src, b, 2);
+			*dst |= b >> 4;
+			src += readStride;
+
+			dst++;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_Z8M:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGB_to_x8(src, g, 1);
+			*dst++ = g;
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_Z8L:
+		SetBlockDimensions(3, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGB_to_x8(src, r, 0);
+			*dst++ = r;
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	case GX_CTF_Z16L:
+		SetBlockDimensions(2, 2, sBlkCount, tBlkCount, sBlkSize, tBlkSize);
+		SetSpans(sBlkSize, tBlkSize, tSpan, sBlkSpan, tBlkSpan, writeStride);
+		ENCODE_LOOP_BLOCKS
+		{
+			boxfilterRGB_to_xx8(src, r, g, 0, 1);
+			*dst++ = g;
+			*dst++ = r;
+			src += readStride;
+		}
+		ENCODE_LOOP_SPANS
+		break;
+
+	default:
+		PanicAlert("Unknown texture copy format: 0x%x\n", format);
+		break;
+	}
+}
+
+void Encode(u8 *dest_ptr)
+{
+	int pixelformat = bpmem.zcontrol.pixel_format;
+	bool bFromZBuffer = pixelformat == PIXELFMT_Z24;
+	bool bIsIntensityFmt = bpmem.triggerEFBCopy.intensity_fmt > 0;
+	u32 copyfmt = ((bpmem.triggerEFBCopy.target_pixel_format / 2) + ((bpmem.triggerEFBCopy.target_pixel_format & 1) * 8));
+
+	// pack copy format information into a single variable
+	u32 format = copyfmt;
+	if (bFromZBuffer)
+	{
+		format |= _GX_TF_ZTF;
+		if (copyfmt == 11)
+			format = GX_TF_Z16;
+		else if (format < GX_TF_Z8 || format > GX_TF_Z24X8)
+			format |= _GX_TF_CTF;
+	}
+	else
+		if (copyfmt > GX_TF_RGBA8 || (copyfmt < GX_TF_RGB565 && !bIsIntensityFmt))
+			format |= _GX_TF_CTF;
+
+	u8 *src = EfbInterface::GetPixelPointer(bpmem.copyTexSrcXY.x, bpmem.copyTexSrcXY.y, bFromZBuffer);
+
+	if (bpmem.triggerEFBCopy.half_scale)
+	{
+		if (pixelformat == PIXELFMT_RGBA6_Z24)
+			EncodeRGBA6halfscale(dest_ptr, src, format);
+		else if (pixelformat == PIXELFMT_RGB8_Z24)
+			EncodeRGB8halfscale(dest_ptr, src, format);
+		else if (pixelformat == PIXELFMT_RGB565_Z16)  // not supported
+			EncodeRGB8halfscale(dest_ptr, src, format);
+		else if (pixelformat == PIXELFMT_Z24)
+			EncodeZ24halfscale(dest_ptr, src, format);
+	}
+	else
+	{
+		if (pixelformat == PIXELFMT_RGBA6_Z24)
+			EncodeRGBA6(dest_ptr, src, format);
+		else if (pixelformat == PIXELFMT_RGB8_Z24)
+			EncodeRGB8(dest_ptr, src, format);
+		else if (pixelformat == PIXELFMT_RGB565_Z16)  // not supported
+			EncodeRGB8(dest_ptr, src, format);
+		else if (pixelformat == PIXELFMT_Z24)
+			EncodeZ24(dest_ptr, src, format);
+	}
+}
+
+
+}