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Diffstat (limited to 'Source/Core/VideoCommon/TextureDecoder_Common.cpp')
| -rw-r--r-- | Source/Core/VideoCommon/TextureDecoder_Common.cpp | 629 |
1 files changed, 629 insertions, 0 deletions
diff --git a/Source/Core/VideoCommon/TextureDecoder_Common.cpp b/Source/Core/VideoCommon/TextureDecoder_Common.cpp new file mode 100644 index 0000000000..b65200cb69 --- /dev/null +++ b/Source/Core/VideoCommon/TextureDecoder_Common.cpp @@ -0,0 +1,629 @@ +// Copyright 2014 Dolphin Emulator Project +// Licensed under GPLv2 +// Refer to the license.txt file included. + +#include "VideoCommon/LookUpTables.h" +#include "VideoCommon/sfont.inc" +#include "VideoCommon/TextureDecoder.h" + +static bool TexFmt_Overlay_Enable=false; +static bool TexFmt_Overlay_Center=false; + +// TRAM +// STATE_TO_SAVE +GC_ALIGNED16(u8 texMem[TMEM_SIZE]); + +int TexDecoder_GetTexelSizeInNibbles(int format) +{ + switch (format & 0x3f) { + case GX_TF_I4: return 1; + case GX_TF_I8: return 2; + case GX_TF_IA4: return 2; + case GX_TF_IA8: return 4; + case GX_TF_RGB565: return 4; + case GX_TF_RGB5A3: return 4; + case GX_TF_RGBA8: return 8; + case GX_TF_C4: return 1; + case GX_TF_C8: return 2; + case GX_TF_C14X2: return 4; + case GX_TF_CMPR: return 1; + case GX_CTF_R4: return 1; + case GX_CTF_RA4: return 2; + case GX_CTF_RA8: return 4; + case GX_CTF_YUVA8: return 8; + case GX_CTF_A8: return 2; + case GX_CTF_R8: return 2; + case GX_CTF_G8: return 2; + case GX_CTF_B8: return 2; + case GX_CTF_RG8: return 4; + case GX_CTF_GB8: return 4; + + case GX_TF_Z8: return 2; + case GX_TF_Z16: return 4; + case GX_TF_Z24X8: return 8; + + case GX_CTF_Z4: return 1; + case GX_CTF_Z8M: return 2; + case GX_CTF_Z8L: return 2; + case GX_CTF_Z16L: return 4; + default: return 1; + } +} + +int TexDecoder_GetTextureSizeInBytes(int width, int height, int format) +{ + return (width * height * TexDecoder_GetTexelSizeInNibbles(format)) / 2; +} + +int TexDecoder_GetBlockWidthInTexels(u32 format) +{ + switch (format) + { + case GX_TF_I4: return 8; + case GX_TF_I8: return 8; + case GX_TF_IA4: return 8; + case GX_TF_IA8: return 4; + case GX_TF_RGB565: return 4; + case GX_TF_RGB5A3: return 4; + case GX_TF_RGBA8: return 4; + case GX_TF_C4: return 8; + case GX_TF_C8: return 8; + case GX_TF_C14X2: return 4; + case GX_TF_CMPR: return 8; + case GX_CTF_R4: return 8; + case GX_CTF_RA4: return 8; + case GX_CTF_RA8: return 4; + case GX_CTF_A8: return 8; + case GX_CTF_R8: return 8; + case GX_CTF_G8: return 8; + case GX_CTF_B8: return 8; + case GX_CTF_RG8: return 4; + case GX_CTF_GB8: return 4; + case GX_TF_Z8: return 8; + case GX_TF_Z16: return 4; + case GX_TF_Z24X8: return 4; + case GX_CTF_Z4: return 8; + case GX_CTF_Z8M: return 8; + case GX_CTF_Z8L: return 8; + case GX_CTF_Z16L: return 4; + default: + ERROR_LOG(VIDEO, "Unsupported Texture Format (%08x)! (GetBlockWidthInTexels)", format); + return 8; + } +} + +int TexDecoder_GetBlockHeightInTexels(u32 format) +{ + switch (format) + { + case GX_TF_I4: return 8; + case GX_TF_I8: return 4; + case GX_TF_IA4: return 4; + case GX_TF_IA8: return 4; + case GX_TF_RGB565: return 4; + case GX_TF_RGB5A3: return 4; + case GX_TF_RGBA8: return 4; + case GX_TF_C4: return 8; + case GX_TF_C8: return 4; + case GX_TF_C14X2: return 4; + case GX_TF_CMPR: return 8; + case GX_CTF_R4: return 8; + case GX_CTF_RA4: return 4; + case GX_CTF_RA8: return 4; + case GX_CTF_A8: return 4; + case GX_CTF_R8: return 4; + case GX_CTF_G8: return 4; + case GX_CTF_B8: return 4; + case GX_CTF_RG8: return 4; + case GX_CTF_GB8: return 4; + case GX_TF_Z8: return 4; + case GX_TF_Z16: return 4; + case GX_TF_Z24X8: return 4; + case GX_CTF_Z4: return 8; + case GX_CTF_Z8M: return 4; + case GX_CTF_Z8L: return 4; + case GX_CTF_Z16L: return 4; + default: + ERROR_LOG(VIDEO, "Unsupported Texture Format (%08x)! (GetBlockHeightInTexels)", format); + return 4; + } +} + +//returns bytes +int TexDecoder_GetPaletteSize(int format) +{ + switch (format) + { + case GX_TF_C4: return 16 * 2; + case GX_TF_C8: return 256 * 2; + case GX_TF_C14X2: return 16384 * 2; + default: + return 0; + } +} + +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", "0x2F", + // 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, int texformat, PC_TexFormat pc_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[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++) + { + switch (pc_texformat) + { + case PC_TEX_FMT_I8: + { + // TODO: Is this an acceptable way to draw in I8? + u8 *dtp = (u8*)dst; + dtp[(y + yoff) * width + x + xoff] = ptr[x] ? 0xFF : 0x88; + break; + } + case PC_TEX_FMT_IA8: + case PC_TEX_FMT_IA4_AS_IA8: + { + u16 *dtp = (u16*)dst; + dtp[(y + yoff) * width + x + xoff] = ptr[x] ? 0xFFFF : 0xFF00; + break; + } + case PC_TEX_FMT_RGB565: + { + u16 *dtp = (u16*)dst; + dtp[(y + yoff)*width + x + xoff] = ptr[x] ? 0xFFFF : 0x0000; + break; + } + default: + case PC_TEX_FMT_BGRA32: + { + int *dtp = (int*)dst; + dtp[(y + yoff) * width + x + xoff] = ptr[x] ? 0xFFFFFFFF : 0xFF000000; + break; + } + } + } + ptr += 9; + } + xoff += xcnt; + fmt++; + } +} + +PC_TexFormat TexDecoder_Decode(u8 *dst, const u8 *src, int width, int height, int texformat, int tlutaddr, int tlutfmt,bool rgbaOnly) +{ + PC_TexFormat pc_texformat = _TexDecoder_DecodeImpl(dst, src, width, height, texformat, tlutaddr, tlutfmt, rgbaOnly); + + if (TexFmt_Overlay_Enable && pc_texformat != PC_TEX_FMT_NONE) + TexDecoder_DrawOverlay(dst, width, height, texformat, pc_texformat); + + return pc_texformat; +} + +static inline u32 makeRGBA(int r, int g, int b, int a) +{ + return (a<<24)|(b<<16)|(g<<8)|r; +} + +static inline u32 decodeIA8Swapped(u16 val) +{ + int a = val & 0xFF; + int i = val >> 8; + return i | (i<<8) | (i<<16) | (a<<24); +} + +static inline u32 decode565RGBA(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 decode5A3RGBA(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); +} + +struct DXTBlock +{ + u16 color1; + u16 color2; + u8 lines[4]; +}; + +void TexDecoder_DecodeTexel(u8 *dst, const u8 *src, int s, int t, int imageWidth, int texformat, int tlutaddr, int 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 GX_TF_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*)(texMem + tlutaddr); + + switch (tlutfmt) + { + case 0: + *((u32*)dst) = decodeIA8Swapped(tlut[val]); + break; + case 1: + *((u32*)dst) = decode565RGBA(Common::swap16(tlut[val])); + break; + case 2: + *((u32*)dst) = decode5A3RGBA(Common::swap16(tlut[val])); + break; + } + } + break; + case GX_TF_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 GX_TF_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 GX_TF_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*)(texMem + tlutaddr); + + switch (tlutfmt) + { + case 0: + *((u32*)dst) = decodeIA8Swapped(tlut[val]); + break; + case 1: + *((u32*)dst) = decode565RGBA(Common::swap16(tlut[val])); + break; + case 2: + *((u32*)dst) = decode5A3RGBA(Common::swap16(tlut[val])); + break; + } + } + break; + case GX_TF_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 GX_TF_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) = decodeIA8Swapped(*valAddr); + } + break; + case GX_TF_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*)(texMem + tlutaddr); + + switch (tlutfmt) + { + case 0: + *((u32*)dst) = decodeIA8Swapped(tlut[val]); + break; + case 1: + *((u32*)dst) = decode565RGBA(Common::swap16(tlut[val])); + break; + case 2: + *((u32*)dst) = decode5A3RGBA(Common::swap16(tlut[val])); + break; + } + } + break; + case GX_TF_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) = decode565RGBA(Common::swap16(*valAddr)); + } + break; + case GX_TF_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) = decode5A3RGBA(Common::swap16(*valAddr)); + } + break; + case GX_TF_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 GX_TF_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(red1+(red2-red1)/3, green1+(green2-green1)/3, blue1+(blue2-blue1)/3, 255); + break; + case 3: + color = makeRGBA(red2+(red1-red2)/3, green2+(green1-green2)/3, blue2+(blue1-blue2)/3, 255); + break; + case 6: + color = makeRGBA((int)ceil((float)(red1+red2)/2), (int)ceil((float)(green1+green2)/2), (int)ceil((float)(blue1+blue2)/2), 255); + break; + case 7: + color = makeRGBA(red2, green2, blue2, 0); + break; + } + + *((u32*)dst) = color; + } + 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 +} + +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; +} |