698 lines
17 KiB
C++
698 lines
17 KiB
C++
// Copyright 2014 Dolphin Emulator Project
|
|
// Licensed under GPLv2+
|
|
// Refer to the license.txt file included.
|
|
|
|
#include <algorithm>
|
|
#include <cmath>
|
|
#include <cstddef>
|
|
|
|
#include "Common/CommonTypes.h"
|
|
#include "Common/MathUtil.h"
|
|
#include "Common/MsgHandler.h"
|
|
#include "Common/Swap.h"
|
|
|
|
#include "VideoCommon/LookUpTables.h"
|
|
#include "VideoCommon/TextureDecoder.h"
|
|
#include "VideoCommon/TextureDecoder_Util.h"
|
|
#include "VideoCommon/sfont.inc"
|
|
|
|
static bool TexFmt_Overlay_Enable = false;
|
|
static bool TexFmt_Overlay_Center = false;
|
|
|
|
// TRAM
|
|
// STATE_TO_SAVE
|
|
alignas(16) u8 texMem[TMEM_SIZE];
|
|
|
|
int TexDecoder_GetTexelSizeInNibbles(TextureFormat format)
|
|
{
|
|
switch (format)
|
|
{
|
|
// 4-bit formats
|
|
case TextureFormat::I4:
|
|
case TextureFormat::C4:
|
|
return 1;
|
|
// 8-bit formats
|
|
case TextureFormat::I8:
|
|
case TextureFormat::IA4:
|
|
case TextureFormat::C8:
|
|
return 2;
|
|
// 16-bit formats
|
|
case TextureFormat::IA8:
|
|
case TextureFormat::RGB565:
|
|
case TextureFormat::RGB5A3:
|
|
case TextureFormat::C14X2:
|
|
return 4;
|
|
// 32-bit formats
|
|
case TextureFormat::RGBA8:
|
|
return 8;
|
|
// Compressed format
|
|
case TextureFormat::CMPR:
|
|
return 1;
|
|
// Special formats
|
|
case TextureFormat::XFB:
|
|
return 4;
|
|
default:
|
|
PanicAlert("Invalid Texture Format (0x%X)! (GetTexelSizeInNibbles)", static_cast<int>(format));
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
int TexDecoder_GetTextureSizeInBytes(int width, int height, TextureFormat format)
|
|
{
|
|
return (width * height * TexDecoder_GetTexelSizeInNibbles(format)) / 2;
|
|
}
|
|
|
|
int TexDecoder_GetBlockWidthInTexels(TextureFormat format)
|
|
{
|
|
switch (format)
|
|
{
|
|
// 4-bit formats
|
|
case TextureFormat::I4:
|
|
case TextureFormat::C4:
|
|
return 8;
|
|
// 8-bit formats
|
|
case TextureFormat::I8:
|
|
case TextureFormat::IA4:
|
|
case TextureFormat::C8:
|
|
return 8;
|
|
// 16-bit formats
|
|
case TextureFormat::IA8:
|
|
case TextureFormat::RGB565:
|
|
case TextureFormat::RGB5A3:
|
|
case TextureFormat::C14X2:
|
|
return 4;
|
|
// 32-bit formats
|
|
case TextureFormat::RGBA8:
|
|
return 4;
|
|
// Compressed format
|
|
case TextureFormat::CMPR:
|
|
return 8;
|
|
// Special formats
|
|
case TextureFormat::XFB:
|
|
return 16;
|
|
default:
|
|
PanicAlert("Invalid Texture Format (0x%X)! (GetBlockWidthInTexels)", static_cast<int>(format));
|
|
return 8;
|
|
}
|
|
}
|
|
|
|
int TexDecoder_GetBlockHeightInTexels(TextureFormat format)
|
|
{
|
|
switch (format)
|
|
{
|
|
// 4-bit formats
|
|
case TextureFormat::I4:
|
|
case TextureFormat::C4:
|
|
return 8;
|
|
// 8-bit formats
|
|
case TextureFormat::I8:
|
|
case TextureFormat::IA4:
|
|
case TextureFormat::C8:
|
|
return 4;
|
|
// 16-bit formats
|
|
case TextureFormat::IA8:
|
|
case TextureFormat::RGB565:
|
|
case TextureFormat::RGB5A3:
|
|
case TextureFormat::C14X2:
|
|
return 4;
|
|
// 32-bit formats
|
|
case TextureFormat::RGBA8:
|
|
return 4;
|
|
// Compressed format
|
|
case TextureFormat::CMPR:
|
|
return 8;
|
|
// Special formats
|
|
case TextureFormat::XFB:
|
|
return 1;
|
|
default:
|
|
PanicAlert("Invalid Texture Format (0x%X)! (GetBlockHeightInTexels)", static_cast<int>(format));
|
|
return 4;
|
|
}
|
|
}
|
|
|
|
int TexDecoder_GetEFBCopyBlockWidthInTexels(EFBCopyFormat format)
|
|
{
|
|
switch (format)
|
|
{
|
|
// 4-bit formats
|
|
case EFBCopyFormat::R4:
|
|
return 8;
|
|
// 8-bit formats
|
|
case EFBCopyFormat::RA4:
|
|
case EFBCopyFormat::A8:
|
|
case EFBCopyFormat::R8_0x1:
|
|
case EFBCopyFormat::R8:
|
|
case EFBCopyFormat::G8:
|
|
case EFBCopyFormat::B8:
|
|
return 8;
|
|
// 16-bit formats
|
|
case EFBCopyFormat::RA8:
|
|
case EFBCopyFormat::RGB565:
|
|
case EFBCopyFormat::RGB5A3:
|
|
case EFBCopyFormat::RG8:
|
|
case EFBCopyFormat::GB8:
|
|
return 4;
|
|
// 32-bit formats
|
|
case EFBCopyFormat::RGBA8:
|
|
return 4;
|
|
// Special formats
|
|
case EFBCopyFormat::XFB:
|
|
return 16;
|
|
default:
|
|
PanicAlert("Invalid EFB Copy Format (0x%X)! (GetEFBCopyBlockWidthInTexels)",
|
|
static_cast<int>(format));
|
|
return 8;
|
|
}
|
|
}
|
|
|
|
int TexDecoder_GetEFBCopyBlockHeightInTexels(EFBCopyFormat format)
|
|
{
|
|
switch (format)
|
|
{
|
|
// 4-bit formats
|
|
case EFBCopyFormat::R4:
|
|
return 8;
|
|
// 8-bit formats
|
|
case EFBCopyFormat::RA4:
|
|
case EFBCopyFormat::A8:
|
|
case EFBCopyFormat::R8_0x1:
|
|
case EFBCopyFormat::R8:
|
|
case EFBCopyFormat::G8:
|
|
case EFBCopyFormat::B8:
|
|
return 4;
|
|
// 16-bit formats
|
|
case EFBCopyFormat::RA8:
|
|
case EFBCopyFormat::RGB565:
|
|
case EFBCopyFormat::RGB5A3:
|
|
case EFBCopyFormat::RG8:
|
|
case EFBCopyFormat::GB8:
|
|
return 4;
|
|
// 32-bit formats
|
|
case EFBCopyFormat::RGBA8:
|
|
return 4;
|
|
// Special formats
|
|
case EFBCopyFormat::XFB:
|
|
return 1;
|
|
default:
|
|
PanicAlert("Invalid EFB Copy Format (0x%X)! (GetEFBCopyBlockHeightInTexels)",
|
|
static_cast<int>(format));
|
|
return 4;
|
|
}
|
|
}
|
|
|
|
// returns bytes
|
|
int TexDecoder_GetPaletteSize(TextureFormat format)
|
|
{
|
|
switch (format)
|
|
{
|
|
case TextureFormat::C4:
|
|
return 16 * 2;
|
|
case TextureFormat::C8:
|
|
return 256 * 2;
|
|
case TextureFormat::C14X2:
|
|
return 16384 * 2;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
// Get the "in memory" texture format of an EFB copy's format.
|
|
// With the exception of c4/c8/c14 paletted texture formats (which are handled elsewhere)
|
|
// this is the format the game should be using when it is drawing an EFB copy back.
|
|
TextureFormat TexDecoder_GetEFBCopyBaseFormat(EFBCopyFormat format)
|
|
{
|
|
switch (format)
|
|
{
|
|
case EFBCopyFormat::R4:
|
|
return TextureFormat::I4;
|
|
case EFBCopyFormat::A8:
|
|
case EFBCopyFormat::R8_0x1:
|
|
case EFBCopyFormat::R8:
|
|
case EFBCopyFormat::G8:
|
|
case EFBCopyFormat::B8:
|
|
return TextureFormat::I8;
|
|
case EFBCopyFormat::RA4:
|
|
return TextureFormat::IA4;
|
|
case EFBCopyFormat::RA8:
|
|
case EFBCopyFormat::RG8:
|
|
case EFBCopyFormat::GB8:
|
|
return TextureFormat::IA8;
|
|
case EFBCopyFormat::RGB565:
|
|
return TextureFormat::RGB565;
|
|
case EFBCopyFormat::RGB5A3:
|
|
return TextureFormat::RGB5A3;
|
|
case EFBCopyFormat::RGBA8:
|
|
return TextureFormat::RGBA8;
|
|
case EFBCopyFormat::XFB:
|
|
return TextureFormat::XFB;
|
|
default:
|
|
PanicAlert("Invalid EFB Copy Format (0x%X)! (GetEFBCopyBaseFormat)", static_cast<int>(format));
|
|
return static_cast<TextureFormat>(format);
|
|
}
|
|
}
|
|
|
|
void TexDecoder_SetTexFmtOverlayOptions(bool enable, bool center)
|
|
{
|
|
TexFmt_Overlay_Enable = enable;
|
|
TexFmt_Overlay_Center = center;
|
|
}
|
|
|
|
static const char* texfmt[] = {
|
|
// pixel
|
|
"I4", "I8", "IA4", "IA8", "RGB565", "RGB5A3", "RGBA8", "0x07", "C4", "C8", "C14X2", "0x0B",
|
|
"0x0C", "0x0D", "CMPR", "0x0F",
|
|
// Z-buffer
|
|
"0x10", "Z8", "0x12", "Z16", "0x14", "0x15", "Z24X8", "0x17", "0x18", "0x19", "0x1A", "0x1B",
|
|
"0x1C", "0x1D", "0x1E", "0x1F",
|
|
// pixel + copy
|
|
"CR4", "0x21", "CRA4", "CRA8", "0x24", "0x25", "CYUVA8", "CA8", "CR8", "CG8", "CB8", "CRG8",
|
|
"CGB8", "0x2D", "0x2E", "XFB",
|
|
// Z + copy
|
|
"CZ4", "0x31", "0x32", "0x33", "0x34", "0x35", "0x36", "0x37", "0x38", "CZ8M", "CZ8L", "0x3B",
|
|
"CZ16L", "0x3D", "0x3E", "0x3F",
|
|
};
|
|
|
|
static void TexDecoder_DrawOverlay(u8* dst, int width, int height, TextureFormat texformat)
|
|
{
|
|
int w = std::min(width, 40);
|
|
int h = std::min(height, 10);
|
|
|
|
int xoff = (width - w) >> 1;
|
|
int yoff = (height - h) >> 1;
|
|
|
|
if (!TexFmt_Overlay_Center)
|
|
{
|
|
xoff = 0;
|
|
yoff = 0;
|
|
}
|
|
|
|
const char* fmt = texfmt[static_cast<int>(texformat) & 15];
|
|
while (*fmt)
|
|
{
|
|
int xcnt = 0;
|
|
int nchar = sfont_map[(int)*fmt];
|
|
|
|
const unsigned char* ptr = sfont_raw[nchar]; // each char is up to 9x10
|
|
|
|
for (int x = 0; x < 9; x++)
|
|
{
|
|
if (ptr[x] == 0x78)
|
|
break;
|
|
xcnt++;
|
|
}
|
|
|
|
for (int y = 0; y < 10; y++)
|
|
{
|
|
for (int x = 0; x < xcnt; x++)
|
|
{
|
|
int* dtp = (int*)dst;
|
|
dtp[(y + yoff) * width + x + xoff] = ptr[x] ? 0xFFFFFFFF : 0xFF000000;
|
|
}
|
|
ptr += 9;
|
|
}
|
|
xoff += xcnt;
|
|
fmt++;
|
|
}
|
|
}
|
|
|
|
void TexDecoder_Decode(u8* dst, const u8* src, int width, int height, TextureFormat texformat,
|
|
const u8* tlut, TLUTFormat tlutfmt)
|
|
{
|
|
_TexDecoder_DecodeImpl((u32*)dst, src, width, height, texformat, tlut, tlutfmt);
|
|
|
|
if (TexFmt_Overlay_Enable)
|
|
TexDecoder_DrawOverlay(dst, width, height, texformat);
|
|
}
|
|
|
|
static inline u32 DecodePixel_IA8(u16 val)
|
|
{
|
|
int a = val & 0xFF;
|
|
int i = val >> 8;
|
|
return i | (i << 8) | (i << 16) | (a << 24);
|
|
}
|
|
|
|
static inline u32 DecodePixel_RGB565(u16 val)
|
|
{
|
|
int r, g, b, a;
|
|
r = Convert5To8((val >> 11) & 0x1f);
|
|
g = Convert6To8((val >> 5) & 0x3f);
|
|
b = Convert5To8((val)&0x1f);
|
|
a = 0xFF;
|
|
return r | (g << 8) | (b << 16) | (a << 24);
|
|
}
|
|
|
|
static inline u32 DecodePixel_RGB5A3(u16 val)
|
|
{
|
|
int r, g, b, a;
|
|
if ((val & 0x8000))
|
|
{
|
|
r = Convert5To8((val >> 10) & 0x1f);
|
|
g = Convert5To8((val >> 5) & 0x1f);
|
|
b = Convert5To8((val)&0x1f);
|
|
a = 0xFF;
|
|
}
|
|
else
|
|
{
|
|
a = Convert3To8((val >> 12) & 0x7);
|
|
r = Convert4To8((val >> 8) & 0xf);
|
|
g = Convert4To8((val >> 4) & 0xf);
|
|
b = Convert4To8((val)&0xf);
|
|
}
|
|
return r | (g << 8) | (b << 16) | (a << 24);
|
|
}
|
|
|
|
static inline u32 DecodePixel_Paletted(u16 pixel, TLUTFormat tlutfmt)
|
|
{
|
|
switch (tlutfmt)
|
|
{
|
|
case TLUTFormat::IA8:
|
|
return DecodePixel_IA8(pixel);
|
|
case TLUTFormat::RGB565:
|
|
return DecodePixel_RGB565(Common::swap16(pixel));
|
|
case TLUTFormat::RGB5A3:
|
|
return DecodePixel_RGB5A3(Common::swap16(pixel));
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
void TexDecoder_DecodeTexel(u8* dst, const u8* src, int s, int t, int imageWidth,
|
|
TextureFormat texformat, const u8* tlut_, TLUTFormat tlutfmt)
|
|
{
|
|
/* General formula for computing texture offset
|
|
//
|
|
u16 sBlk = s / blockWidth;
|
|
u16 tBlk = t / blockHeight;
|
|
u16 widthBlks = (width / blockWidth) + 1;
|
|
u32 base = (tBlk * widthBlks + sBlk) * blockWidth * blockHeight;
|
|
u16 blkS = s & (blockWidth - 1);
|
|
u16 blkT = t & (blockHeight - 1);
|
|
u32 blkOff = blkT * blockWidth + blkS;
|
|
*/
|
|
|
|
switch (texformat)
|
|
{
|
|
case TextureFormat::C4:
|
|
{
|
|
u16 sBlk = s >> 3;
|
|
u16 tBlk = t >> 3;
|
|
u16 widthBlks = (imageWidth >> 3) + 1;
|
|
u32 base = (tBlk * widthBlks + sBlk) << 5;
|
|
u16 blkS = s & 7;
|
|
u16 blkT = t & 7;
|
|
u32 blkOff = (blkT << 3) + blkS;
|
|
|
|
int rs = (blkOff & 1) ? 0 : 4;
|
|
u32 offset = base + (blkOff >> 1);
|
|
|
|
u8 val = (*(src + offset) >> rs) & 0xF;
|
|
u16* tlut = (u16*)tlut_;
|
|
|
|
*((u32*)dst) = DecodePixel_Paletted(tlut[val], tlutfmt);
|
|
}
|
|
break;
|
|
case TextureFormat::I4:
|
|
{
|
|
u16 sBlk = s >> 3;
|
|
u16 tBlk = t >> 3;
|
|
u16 widthBlks = (imageWidth >> 3) + 1;
|
|
u32 base = (tBlk * widthBlks + sBlk) << 5;
|
|
u16 blkS = s & 7;
|
|
u16 blkT = t & 7;
|
|
u32 blkOff = (blkT << 3) + blkS;
|
|
|
|
int rs = (blkOff & 1) ? 0 : 4;
|
|
u32 offset = base + (blkOff >> 1);
|
|
|
|
u8 val = (*(src + offset) >> rs) & 0xF;
|
|
val = Convert4To8(val);
|
|
dst[0] = val;
|
|
dst[1] = val;
|
|
dst[2] = val;
|
|
dst[3] = val;
|
|
}
|
|
break;
|
|
case TextureFormat::I8:
|
|
{
|
|
u16 sBlk = s >> 3;
|
|
u16 tBlk = t >> 2;
|
|
u16 widthBlks = (imageWidth >> 3) + 1;
|
|
u32 base = (tBlk * widthBlks + sBlk) << 5;
|
|
u16 blkS = s & 7;
|
|
u16 blkT = t & 3;
|
|
u32 blkOff = (blkT << 3) + blkS;
|
|
|
|
u8 val = *(src + base + blkOff);
|
|
dst[0] = val;
|
|
dst[1] = val;
|
|
dst[2] = val;
|
|
dst[3] = val;
|
|
}
|
|
break;
|
|
case TextureFormat::C8:
|
|
{
|
|
u16 sBlk = s >> 3;
|
|
u16 tBlk = t >> 2;
|
|
u16 widthBlks = (imageWidth >> 3) + 1;
|
|
u32 base = (tBlk * widthBlks + sBlk) << 5;
|
|
u16 blkS = s & 7;
|
|
u16 blkT = t & 3;
|
|
u32 blkOff = (blkT << 3) + blkS;
|
|
|
|
u8 val = *(src + base + blkOff);
|
|
u16* tlut = (u16*)tlut_;
|
|
|
|
*((u32*)dst) = DecodePixel_Paletted(tlut[val], tlutfmt);
|
|
}
|
|
break;
|
|
case TextureFormat::IA4:
|
|
{
|
|
u16 sBlk = s >> 3;
|
|
u16 tBlk = t >> 2;
|
|
u16 widthBlks = (imageWidth >> 3) + 1;
|
|
u32 base = (tBlk * widthBlks + sBlk) << 5;
|
|
u16 blkS = s & 7;
|
|
u16 blkT = t & 3;
|
|
u32 blkOff = (blkT << 3) + blkS;
|
|
|
|
u8 val = *(src + base + blkOff);
|
|
const u8 a = Convert4To8(val >> 4);
|
|
const u8 l = Convert4To8(val & 0xF);
|
|
dst[0] = l;
|
|
dst[1] = l;
|
|
dst[2] = l;
|
|
dst[3] = a;
|
|
}
|
|
break;
|
|
case TextureFormat::IA8:
|
|
{
|
|
u16 sBlk = s >> 2;
|
|
u16 tBlk = t >> 2;
|
|
u16 widthBlks = (imageWidth >> 2) + 1;
|
|
u32 base = (tBlk * widthBlks + sBlk) << 4;
|
|
u16 blkS = s & 3;
|
|
u16 blkT = t & 3;
|
|
u32 blkOff = (blkT << 2) + blkS;
|
|
|
|
u32 offset = (base + blkOff) << 1;
|
|
const u16* valAddr = (u16*)(src + offset);
|
|
|
|
*((u32*)dst) = DecodePixel_IA8(*valAddr);
|
|
}
|
|
break;
|
|
case TextureFormat::C14X2:
|
|
{
|
|
u16 sBlk = s >> 2;
|
|
u16 tBlk = t >> 2;
|
|
u16 widthBlks = (imageWidth >> 2) + 1;
|
|
u32 base = (tBlk * widthBlks + sBlk) << 4;
|
|
u16 blkS = s & 3;
|
|
u16 blkT = t & 3;
|
|
u32 blkOff = (blkT << 2) + blkS;
|
|
|
|
u32 offset = (base + blkOff) << 1;
|
|
const u16* valAddr = (u16*)(src + offset);
|
|
|
|
u16 val = Common::swap16(*valAddr) & 0x3FFF;
|
|
u16* tlut = (u16*)tlut_;
|
|
|
|
*((u32*)dst) = DecodePixel_Paletted(tlut[val], tlutfmt);
|
|
}
|
|
break;
|
|
case TextureFormat::RGB565:
|
|
{
|
|
u16 sBlk = s >> 2;
|
|
u16 tBlk = t >> 2;
|
|
u16 widthBlks = (imageWidth >> 2) + 1;
|
|
u32 base = (tBlk * widthBlks + sBlk) << 4;
|
|
u16 blkS = s & 3;
|
|
u16 blkT = t & 3;
|
|
u32 blkOff = (blkT << 2) + blkS;
|
|
|
|
u32 offset = (base + blkOff) << 1;
|
|
const u16* valAddr = (u16*)(src + offset);
|
|
|
|
*((u32*)dst) = DecodePixel_RGB565(Common::swap16(*valAddr));
|
|
}
|
|
break;
|
|
case TextureFormat::RGB5A3:
|
|
{
|
|
u16 sBlk = s >> 2;
|
|
u16 tBlk = t >> 2;
|
|
u16 widthBlks = (imageWidth >> 2) + 1;
|
|
u32 base = (tBlk * widthBlks + sBlk) << 4;
|
|
u16 blkS = s & 3;
|
|
u16 blkT = t & 3;
|
|
u32 blkOff = (blkT << 2) + blkS;
|
|
|
|
u32 offset = (base + blkOff) << 1;
|
|
const u16* valAddr = (u16*)(src + offset);
|
|
|
|
*((u32*)dst) = DecodePixel_RGB5A3(Common::swap16(*valAddr));
|
|
}
|
|
break;
|
|
case TextureFormat::RGBA8:
|
|
{
|
|
u16 sBlk = s >> 2;
|
|
u16 tBlk = t >> 2;
|
|
u16 widthBlks = (imageWidth >> 2) + 1;
|
|
u32 base = (tBlk * widthBlks + sBlk) << 5; // shift by 5 is correct
|
|
u16 blkS = s & 3;
|
|
u16 blkT = t & 3;
|
|
u32 blkOff = (blkT << 2) + blkS;
|
|
|
|
u32 offset = (base + blkOff) << 1;
|
|
const u8* valAddr = src + offset;
|
|
|
|
dst[3] = valAddr[0];
|
|
dst[0] = valAddr[1];
|
|
dst[1] = valAddr[32];
|
|
dst[2] = valAddr[33];
|
|
}
|
|
break;
|
|
case TextureFormat::CMPR:
|
|
{
|
|
u16 sDxt = s >> 2;
|
|
u16 tDxt = t >> 2;
|
|
|
|
u16 sBlk = sDxt >> 1;
|
|
u16 tBlk = tDxt >> 1;
|
|
u16 widthBlks = (imageWidth >> 3) + 1;
|
|
u32 base = (tBlk * widthBlks + sBlk) << 2;
|
|
u16 blkS = sDxt & 1;
|
|
u16 blkT = tDxt & 1;
|
|
u32 blkOff = (blkT << 1) + blkS;
|
|
|
|
u32 offset = (base + blkOff) << 3;
|
|
|
|
const DXTBlock* dxtBlock = (const DXTBlock*)(src + offset);
|
|
|
|
u16 c1 = Common::swap16(dxtBlock->color1);
|
|
u16 c2 = Common::swap16(dxtBlock->color2);
|
|
int blue1 = Convert5To8(c1 & 0x1F);
|
|
int blue2 = Convert5To8(c2 & 0x1F);
|
|
int green1 = Convert6To8((c1 >> 5) & 0x3F);
|
|
int green2 = Convert6To8((c2 >> 5) & 0x3F);
|
|
int red1 = Convert5To8((c1 >> 11) & 0x1F);
|
|
int red2 = Convert5To8((c2 >> 11) & 0x1F);
|
|
|
|
u16 ss = s & 3;
|
|
u16 tt = t & 3;
|
|
|
|
int colorSel = dxtBlock->lines[tt];
|
|
int rs = 6 - (ss << 1);
|
|
colorSel = (colorSel >> rs) & 3;
|
|
colorSel |= c1 > c2 ? 0 : 4;
|
|
|
|
u32 color = 0;
|
|
|
|
switch (colorSel)
|
|
{
|
|
case 0:
|
|
case 4:
|
|
color = MakeRGBA(red1, green1, blue1, 255);
|
|
break;
|
|
case 1:
|
|
case 5:
|
|
color = MakeRGBA(red2, green2, blue2, 255);
|
|
break;
|
|
case 2:
|
|
color = MakeRGBA(DXTBlend(red2, red1), DXTBlend(green2, green1), DXTBlend(blue2, blue1), 255);
|
|
break;
|
|
case 3:
|
|
color = MakeRGBA(DXTBlend(red1, red2), DXTBlend(green1, green2), DXTBlend(blue1, blue2), 255);
|
|
break;
|
|
case 6:
|
|
color = MakeRGBA((red1 + red2) / 2, (green1 + green2) / 2, (blue1 + blue2) / 2, 255);
|
|
break;
|
|
case 7:
|
|
// color[3] is the same as color[2] (average of both colors), but transparent.
|
|
// This differs from DXT1 where color[3] is transparent black.
|
|
color = MakeRGBA((red1 + red2) / 2, (green1 + green2) / 2, (blue1 + blue2) / 2, 0);
|
|
break;
|
|
default:
|
|
color = 0;
|
|
break;
|
|
}
|
|
|
|
*((u32*)dst) = color;
|
|
}
|
|
break;
|
|
case TextureFormat::XFB:
|
|
{
|
|
size_t offset = (t * imageWidth + (s & (~1))) * 2;
|
|
|
|
// We do this one color sample (aka 2 RGB pixles) at a time
|
|
int Y = int((s & 1) == 0 ? src[offset] : src[offset + 2]) - 16;
|
|
int U = int(src[offset + 1]) - 128;
|
|
int V = int(src[offset + 3]) - 128;
|
|
|
|
// We do the inverse BT.601 conversion for YCbCr to RGB
|
|
// http://www.equasys.de/colorconversion.html#YCbCr-RGBColorFormatConversion
|
|
u8 R = MathUtil::Clamp(int(1.164f * Y + 1.596f * V), 0, 255);
|
|
u8 G = MathUtil::Clamp(int(1.164f * Y - 0.392f * U - 0.813f * V), 0, 255);
|
|
u8 B = MathUtil::Clamp(int(1.164f * Y + 2.017f * U), 0, 255);
|
|
dst[t * imageWidth + s] = 0xff000000 | B << 16 | G << 8 | R;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
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
|
|
}
|
|
|
|
void 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;
|
|
}
|
|
}
|
|
}
|