From: Connor McAdams cmcadams@codeweavers.com
Signed-off-by: Connor McAdams cmcadams@codeweavers.com --- dlls/d3dx9_24/Makefile.in | 1 - dlls/d3dx9_25/Makefile.in | 1 - dlls/d3dx9_26/Makefile.in | 1 - dlls/d3dx9_27/Makefile.in | 1 - dlls/d3dx9_28/Makefile.in | 1 - dlls/d3dx9_29/Makefile.in | 1 - dlls/d3dx9_30/Makefile.in | 1 - dlls/d3dx9_31/Makefile.in | 1 - dlls/d3dx9_32/Makefile.in | 1 - dlls/d3dx9_33/Makefile.in | 1 - dlls/d3dx9_34/Makefile.in | 1 - dlls/d3dx9_35/Makefile.in | 1 - dlls/d3dx9_36/Makefile.in | 1 - dlls/d3dx9_36/bcdec.h | 1328 ++++++++++++++++++++++++++++++++ dlls/d3dx9_36/surface.c | 99 ++- dlls/d3dx9_36/txc_dxtn.h | 9 - dlls/d3dx9_36/txc_fetch_dxtn.c | 243 ------ dlls/d3dx9_37/Makefile.in | 1 - dlls/d3dx9_38/Makefile.in | 1 - dlls/d3dx9_39/Makefile.in | 1 - dlls/d3dx9_40/Makefile.in | 1 - dlls/d3dx9_41/Makefile.in | 1 - dlls/d3dx9_42/Makefile.in | 1 - dlls/d3dx9_43/Makefile.in | 1 - 24 files changed, 1411 insertions(+), 288 deletions(-) create mode 100644 dlls/d3dx9_36/bcdec.h delete mode 100644 dlls/d3dx9_36/txc_fetch_dxtn.c
diff --git a/dlls/d3dx9_24/Makefile.in b/dlls/d3dx9_24/Makefile.in index 3f3fc57bfb5..000bf47af30 100644 --- a/dlls/d3dx9_24/Makefile.in +++ b/dlls/d3dx9_24/Makefile.in @@ -23,7 +23,6 @@ SOURCES = \ surface.c \ texture.c \ txc_compress_dxtn.c \ - txc_fetch_dxtn.c \ util.c \ version.rc \ volume.c \ diff --git a/dlls/d3dx9_25/Makefile.in b/dlls/d3dx9_25/Makefile.in index 93691cfb23d..6796f90b1c4 100644 --- a/dlls/d3dx9_25/Makefile.in +++ b/dlls/d3dx9_25/Makefile.in @@ -23,7 +23,6 @@ SOURCES = \ surface.c \ texture.c \ txc_compress_dxtn.c \ - txc_fetch_dxtn.c \ util.c \ version.rc \ volume.c \ diff --git a/dlls/d3dx9_26/Makefile.in b/dlls/d3dx9_26/Makefile.in index b7369e7810e..cb6ff05ccbb 100644 --- a/dlls/d3dx9_26/Makefile.in +++ b/dlls/d3dx9_26/Makefile.in @@ -23,7 +23,6 @@ SOURCES = \ surface.c \ texture.c \ txc_compress_dxtn.c \ - txc_fetch_dxtn.c \ util.c \ version.rc \ volume.c \ diff --git a/dlls/d3dx9_27/Makefile.in b/dlls/d3dx9_27/Makefile.in index da4e396db86..339bccaae96 100644 --- a/dlls/d3dx9_27/Makefile.in +++ b/dlls/d3dx9_27/Makefile.in @@ -23,7 +23,6 @@ SOURCES = \ surface.c \ texture.c \ txc_compress_dxtn.c \ - txc_fetch_dxtn.c \ util.c \ version.rc \ volume.c \ diff --git a/dlls/d3dx9_28/Makefile.in b/dlls/d3dx9_28/Makefile.in index b321e3605af..d25dc56a7e7 100644 --- a/dlls/d3dx9_28/Makefile.in +++ b/dlls/d3dx9_28/Makefile.in @@ -23,7 +23,6 @@ SOURCES = \ surface.c \ texture.c \ txc_compress_dxtn.c \ - txc_fetch_dxtn.c \ util.c \ version.rc \ volume.c \ diff --git a/dlls/d3dx9_29/Makefile.in b/dlls/d3dx9_29/Makefile.in index c1bee84ca0c..fe06e9b4a31 100644 --- a/dlls/d3dx9_29/Makefile.in +++ b/dlls/d3dx9_29/Makefile.in @@ -23,7 +23,6 @@ SOURCES = \ surface.c \ texture.c \ txc_compress_dxtn.c \ - txc_fetch_dxtn.c \ util.c \ version.rc \ volume.c \ diff --git a/dlls/d3dx9_30/Makefile.in b/dlls/d3dx9_30/Makefile.in index da162dae334..882c2355521 100644 --- a/dlls/d3dx9_30/Makefile.in +++ b/dlls/d3dx9_30/Makefile.in @@ -23,7 +23,6 @@ SOURCES = \ surface.c \ texture.c \ txc_compress_dxtn.c \ - txc_fetch_dxtn.c \ util.c \ version.rc \ volume.c \ diff --git a/dlls/d3dx9_31/Makefile.in b/dlls/d3dx9_31/Makefile.in index d973244f620..a48b829a26c 100644 --- a/dlls/d3dx9_31/Makefile.in +++ b/dlls/d3dx9_31/Makefile.in @@ -23,7 +23,6 @@ SOURCES = \ surface.c \ texture.c \ txc_compress_dxtn.c \ - txc_fetch_dxtn.c \ util.c \ version.rc \ volume.c \ diff --git a/dlls/d3dx9_32/Makefile.in b/dlls/d3dx9_32/Makefile.in index 1b2fb450b92..e7b902765d4 100644 --- a/dlls/d3dx9_32/Makefile.in +++ b/dlls/d3dx9_32/Makefile.in @@ -23,7 +23,6 @@ SOURCES = \ surface.c \ texture.c \ txc_compress_dxtn.c \ - txc_fetch_dxtn.c \ util.c \ version.rc \ volume.c \ diff --git a/dlls/d3dx9_33/Makefile.in b/dlls/d3dx9_33/Makefile.in index 038280385e3..34f63cf1819 100644 --- a/dlls/d3dx9_33/Makefile.in +++ b/dlls/d3dx9_33/Makefile.in @@ -23,7 +23,6 @@ SOURCES = \ surface.c \ texture.c \ txc_compress_dxtn.c \ - txc_fetch_dxtn.c \ util.c \ version.rc \ volume.c \ diff --git a/dlls/d3dx9_34/Makefile.in b/dlls/d3dx9_34/Makefile.in index 1cb2deace74..23faf212b25 100644 --- a/dlls/d3dx9_34/Makefile.in +++ b/dlls/d3dx9_34/Makefile.in @@ -23,7 +23,6 @@ SOURCES = \ surface.c \ texture.c \ txc_compress_dxtn.c \ - txc_fetch_dxtn.c \ util.c \ version.rc \ volume.c \ diff --git a/dlls/d3dx9_35/Makefile.in b/dlls/d3dx9_35/Makefile.in index f08b2ebc52e..e7c6cb997b7 100644 --- a/dlls/d3dx9_35/Makefile.in +++ b/dlls/d3dx9_35/Makefile.in @@ -24,7 +24,6 @@ SOURCES = \ surface.c \ texture.c \ txc_compress_dxtn.c \ - txc_fetch_dxtn.c \ util.c \ version.rc \ volume.c \ diff --git a/dlls/d3dx9_36/Makefile.in b/dlls/d3dx9_36/Makefile.in index 798ae4c2c1d..e21a80122ae 100644 --- a/dlls/d3dx9_36/Makefile.in +++ b/dlls/d3dx9_36/Makefile.in @@ -23,7 +23,6 @@ SOURCES = \ surface.c \ texture.c \ txc_compress_dxtn.c \ - txc_fetch_dxtn.c \ util.c \ version.rc \ volume.c \ diff --git a/dlls/d3dx9_36/bcdec.h b/dlls/d3dx9_36/bcdec.h new file mode 100644 index 00000000000..4e4c7360507 --- /dev/null +++ b/dlls/d3dx9_36/bcdec.h @@ -0,0 +1,1328 @@ +/* bcdec.h - v0.96 + provides functions to decompress blocks of BC compressed images + written by Sergii "iOrange" Kudlai in 2022 + + This library does not allocate memory and is trying to use as less stack as possible + + The library was never optimized specifically for speed but for the overall size + it has zero external dependencies and is not using any runtime functions + + Supported BC formats: + BC1 (also known as DXT1) + it's "binary alpha" variant BC1A (DXT1A) + BC2 (also known as DXT3) + BC3 (also known as DXT5) + BC4 (also known as ATI1N) + BC5 (also known as ATI2N) + BC6H (HDR format) + BC7 + + BC1/BC2/BC3/BC7 are expected to decompress into 4*4 RGBA blocks 8bit per component (32bit pixel) + BC4/BC5 are expected to decompress into 4*4 R/RG blocks 8bit per component (8bit and 16bit pixel) + BC6H is expected to decompress into 4*4 RGB blocks of either 32bit float or 16bit "half" per + component (96bit or 48bit pixel) + + For more info, issues and suggestions please visit https://github.com/iOrange/bcdec + + CREDITS: + Aras Pranckevicius (@aras-p) - BC1/BC3 decoders optimizations (up to 3x the speed) + - BC6H/BC7 bits pulling routines optimizations + - optimized BC6H by moving unquantize out of the loop + - Split BC6H decompression function into 'half' and + 'float' variants + + bugfixes: + @linkmauve + + LICENSE: See end of file for license information. +*/ + +#ifndef BCDEC_HEADER_INCLUDED +#define BCDEC_HEADER_INCLUDED + +/* if BCDEC_STATIC causes problems, try defining BCDECDEF to 'inline' or 'static inline' */ +#ifndef BCDECDEF +#ifdef BCDEC_STATIC +#define BCDECDEF static +#else +#ifdef __cplusplus +#define BCDECDEF extern "C" +#else +#define BCDECDEF extern +#endif +#endif +#endif + +/* Used information sources: + https://docs.microsoft.com/en-us/windows/win32/direct3d10/d3d10-graphics-pro... + https://docs.microsoft.com/en-us/windows/win32/direct3d11/bc6h-format + https://docs.microsoft.com/en-us/windows/win32/direct3d11/bc7-format + https://docs.microsoft.com/en-us/windows/win32/direct3d11/bc7-format-mode-re... + + ! WARNING ! Khronos's BPTC partitions tables contain mistakes, do not use them! + https://www.khronos.org/registry/DataFormat/specs/1.1/dataformat.1.1.html#BP... + + ! Use tables from here instead ! + https://www.khronos.org/registry/OpenGL/extensions/ARB/ARB_texture_compressi... + + Leaving it here as it's a nice read + https://fgiesen.wordpress.com/2021/10/04/gpu-bcn-decoding/ + + Fast half to float function from here + https://gist.github.com/rygorous/2144712 +*/ + +#define BCDEC_BC1_BLOCK_SIZE 8 +#define BCDEC_BC2_BLOCK_SIZE 16 +#define BCDEC_BC3_BLOCK_SIZE 16 +#define BCDEC_BC4_BLOCK_SIZE 8 +#define BCDEC_BC5_BLOCK_SIZE 16 +#define BCDEC_BC6H_BLOCK_SIZE 16 +#define BCDEC_BC7_BLOCK_SIZE 16 + +#define BCDEC_BC1_COMPRESSED_SIZE(w, h) ((((w)>>2)*((h)>>2))*BCDEC_BC1_BLOCK_SIZE) +#define BCDEC_BC2_COMPRESSED_SIZE(w, h) ((((w)>>2)*((h)>>2))*BCDEC_BC2_BLOCK_SIZE) +#define BCDEC_BC3_COMPRESSED_SIZE(w, h) ((((w)>>2)*((h)>>2))*BCDEC_BC3_BLOCK_SIZE) +#define BCDEC_BC4_COMPRESSED_SIZE(w, h) ((((w)>>2)*((h)>>2))*BCDEC_BC4_BLOCK_SIZE) +#define BCDEC_BC5_COMPRESSED_SIZE(w, h) ((((w)>>2)*((h)>>2))*BCDEC_BC5_BLOCK_SIZE) +#define BCDEC_BC6H_COMPRESSED_SIZE(w, h) ((((w)>>2)*((h)>>2))*BCDEC_BC6H_BLOCK_SIZE) +#define BCDEC_BC7_COMPRESSED_SIZE(w, h) ((((w)>>2)*((h)>>2))*BCDEC_BC7_BLOCK_SIZE) + +BCDECDEF void bcdec_bc1(const void* compressedBlock, void* decompressedBlock, int destinationPitch); +BCDECDEF void bcdec_bc2(const void* compressedBlock, void* decompressedBlock, int destinationPitch); +BCDECDEF void bcdec_bc3(const void* compressedBlock, void* decompressedBlock, int destinationPitch); +BCDECDEF void bcdec_bc4(const void* compressedBlock, void* decompressedBlock, int destinationPitch); +BCDECDEF void bcdec_bc5(const void* compressedBlock, void* decompressedBlock, int destinationPitch); +BCDECDEF void bcdec_bc6h_float(const void* compressedBlock, void* decompressedBlock, int destinationPitch, int isSigned); +BCDECDEF void bcdec_bc6h_half(const void* compressedBlock, void* decompressedBlock, int destinationPitch, int isSigned); +BCDECDEF void bcdec_bc7(const void* compressedBlock, void* decompressedBlock, int destinationPitch); + +#endif /* BCDEC_HEADER_INCLUDED */ + +#ifdef BCDEC_IMPLEMENTATION + +static void bcdec__color_block(const void* compressedBlock, void* decompressedBlock, int destinationPitch, int onlyOpaqueMode) { + unsigned short c0, c1; + unsigned int refColors[4]; /* 0xAABBGGRR */ + unsigned char* dstColors; + unsigned int colorIndices; + int i, j, idx; + unsigned int r0, g0, b0, r1, g1, b1, r, g, b; + + c0 = ((unsigned short*)compressedBlock)[0]; + c1 = ((unsigned short*)compressedBlock)[1]; + + /* Expand 565 ref colors to 888 */ + r0 = (((c0 >> 11) & 0x1F) * 527 + 23) >> 6; + g0 = (((c0 >> 5) & 0x3F) * 259 + 33) >> 6; + b0 = ((c0 & 0x1F) * 527 + 23) >> 6; + refColors[0] = 0xFF000000 | (b0 << 16) | (g0 << 8) | r0; + + r1 = (((c1 >> 11) & 0x1F) * 527 + 23) >> 6; + g1 = (((c1 >> 5) & 0x3F) * 259 + 33) >> 6; + b1 = ((c1 & 0x1F) * 527 + 23) >> 6; + refColors[1] = 0xFF000000 | (b1 << 16) | (g1 << 8) | r1; + + if (c0 > c1 || onlyOpaqueMode) { /* Standard BC1 mode (also BC3 color block uses ONLY this mode) */ + /* color_2 = 2/3*color_0 + 1/3*color_1 + color_3 = 1/3*color_0 + 2/3*color_1 */ + r = (2 * r0 + r1 + 1) / 3; + g = (2 * g0 + g1 + 1) / 3; + b = (2 * b0 + b1 + 1) / 3; + refColors[2] = 0xFF000000 | (b << 16) | (g << 8) | r; + + r = (r0 + 2 * r1 + 1) / 3; + g = (g0 + 2 * g1 + 1) / 3; + b = (b0 + 2 * b1 + 1) / 3; + refColors[3] = 0xFF000000 | (b << 16) | (g << 8) | r; + } else { /* Quite rare BC1A mode */ + /* color_2 = 1/2*color_0 + 1/2*color_1; + color_3 = 0; */ + r = (r0 + r1 + 1) >> 1; + g = (g0 + g1 + 1) >> 1; + b = (b0 + b1 + 1) >> 1; + refColors[2] = 0xFF000000 | (b << 16) | (g << 8) | r; + + refColors[3] = 0x00000000; + } + + colorIndices = ((unsigned int*)compressedBlock)[1]; + + /* Fill out the decompressed color block */ + dstColors = (unsigned char*)decompressedBlock; + for (i = 0; i < 4; ++i) { + for (j = 0; j < 4; ++j) { + idx = colorIndices & 0x03; + ((unsigned int*)dstColors)[j] = refColors[idx]; + colorIndices >>= 2; + } + + dstColors += destinationPitch; + } +} + +static void bcdec__sharp_alpha_block(const void* compressedBlock, void* decompressedBlock, int destinationPitch) { + unsigned short* alpha; + unsigned char* decompressed; + int i, j; + + alpha = (unsigned short*)compressedBlock; + decompressed = (unsigned char*)decompressedBlock; + + for (i = 0; i < 4; ++i) { + for (j = 0; j < 4; ++j) { + decompressed[j * 4] = ((alpha[i] >> (4 * j)) & 0x0F) * 17; + } + + decompressed += destinationPitch; + } +} + +static void bcdec__smooth_alpha_block(const void* compressedBlock, void* decompressedBlock, int destinationPitch, int pixelSize) { + unsigned char* decompressed; + unsigned char alpha[8]; + int i, j; + unsigned long long block, indices; + + block = *(unsigned long long*)compressedBlock; + decompressed = (unsigned char*)decompressedBlock; + + alpha[0] = block & 0xFF; + alpha[1] = (block >> 8) & 0xFF; + + if (alpha[0] > alpha[1]) { + /* 6 interpolated alpha values. */ + alpha[2] = (6 * alpha[0] + alpha[1] + 1) / 7; /* 6/7*alpha_0 + 1/7*alpha_1 */ + alpha[3] = (5 * alpha[0] + 2 * alpha[1] + 1) / 7; /* 5/7*alpha_0 + 2/7*alpha_1 */ + alpha[4] = (4 * alpha[0] + 3 * alpha[1] + 1) / 7; /* 4/7*alpha_0 + 3/7*alpha_1 */ + alpha[5] = (3 * alpha[0] + 4 * alpha[1] + 1) / 7; /* 3/7*alpha_0 + 4/7*alpha_1 */ + alpha[6] = (2 * alpha[0] + 5 * alpha[1] + 1) / 7; /* 2/7*alpha_0 + 5/7*alpha_1 */ + alpha[7] = ( alpha[0] + 6 * alpha[1] + 1) / 7; /* 1/7*alpha_0 + 6/7*alpha_1 */ + } + else { + /* 4 interpolated alpha values. */ + alpha[2] = (4 * alpha[0] + alpha[1] + 1) / 5; /* 4/5*alpha_0 + 1/5*alpha_1 */ + alpha[3] = (3 * alpha[0] + 2 * alpha[1] + 1) / 5; /* 3/5*alpha_0 + 2/5*alpha_1 */ + alpha[4] = (2 * alpha[0] + 3 * alpha[1] + 1) / 5; /* 2/5*alpha_0 + 3/5*alpha_1 */ + alpha[5] = ( alpha[0] + 4 * alpha[1] + 1) / 5; /* 1/5*alpha_0 + 4/5*alpha_1 */ + alpha[6] = 0x00; + alpha[7] = 0xFF; + } + + indices = block >> 16; + for (i = 0; i < 4; ++i) { + for (j = 0; j < 4; ++j) { + decompressed[j * pixelSize] = alpha[indices & 0x07]; + indices >>= 3; + } + + decompressed += destinationPitch; + } +} + +typedef struct bcdec__bitstream { + unsigned long long low; + unsigned long long high; +} bcdec__bitstream_t; + +static int bcdec__bitstream_read_bits(bcdec__bitstream_t* bstream, int numBits) { + unsigned int mask = (1 << numBits) - 1; + /* Read the low N bits */ + unsigned int bits = (bstream->low & mask); + + bstream->low >>= numBits; + /* Put the low N bits of "high" into the high 64-N bits of "low". */ + bstream->low |= (bstream->high & mask) << (sizeof(bstream->high) * 8 - numBits); + bstream->high >>= numBits; + + return bits; +} + +static int bcdec__bitstream_read_bit(bcdec__bitstream_t* bstream) { + return bcdec__bitstream_read_bits(bstream, 1); +} + +/* reversed bits pulling, used in BC6H decoding + why ?? just why ??? */ +static int bcdec__bitstream_read_bits_r(bcdec__bitstream_t* bstream, int numBits) { + int bits = bcdec__bitstream_read_bits(bstream, numBits); + /* Reverse the bits. */ + int result = 0; + while (numBits--) { + result <<= 1; + result |= (bits & 1); + bits >>= 1; + } + return result; +} + + + +BCDECDEF void bcdec_bc1(const void* compressedBlock, void* decompressedBlock, int destinationPitch) { + bcdec__color_block(compressedBlock, decompressedBlock, destinationPitch, 0); +} + +BCDECDEF void bcdec_bc2(const void* compressedBlock, void* decompressedBlock, int destinationPitch) { + bcdec__color_block(((char*)compressedBlock) + 8, decompressedBlock, destinationPitch, 1); + bcdec__sharp_alpha_block(compressedBlock, ((char*)decompressedBlock) + 3, destinationPitch); +} + +BCDECDEF void bcdec_bc3(const void* compressedBlock, void* decompressedBlock, int destinationPitch) { + bcdec__color_block(((char*)compressedBlock) + 8, decompressedBlock, destinationPitch, 1); + bcdec__smooth_alpha_block(compressedBlock, ((char*)decompressedBlock) + 3, destinationPitch, 4); +} + +BCDECDEF void bcdec_bc4(const void* compressedBlock, void* decompressedBlock, int destinationPitch) { + bcdec__smooth_alpha_block(compressedBlock, decompressedBlock, destinationPitch, 1); +} + +BCDECDEF void bcdec_bc5(const void* compressedBlock, void* decompressedBlock, int destinationPitch) { + bcdec__smooth_alpha_block(compressedBlock, decompressedBlock, destinationPitch, 2); + bcdec__smooth_alpha_block(((char*)compressedBlock) + 8, ((char*)decompressedBlock) + 1, destinationPitch, 2); +} + +/* http://graphics.stanford.edu/~seander/bithacks.html#VariableSignExtend */ +static int bcdec__extend_sign(int val, int bits) { + return (val << (32 - bits)) >> (32 - bits); +} + +static int bcdec__transform_inverse(int val, int a0, int bits, int isSigned) { + /* If the precision of A0 is "p" bits, then the transform algorithm is: + B0 = (B0 + A0) & ((1 << p) - 1) */ + val = (val + a0) & ((1 << bits) - 1); + if (isSigned) { + val = bcdec__extend_sign(val, bits); + } + return val; +} + +/* pretty much copy-paste from documentation */ +static int bcdec__unquantize(int val, int bits, int isSigned) { + int unq, s = 0; + + if (!isSigned) { + if (bits >= 15) { + unq = val; + } else if (!val) { + unq = 0; + } else if (val == ((1 << bits) - 1)) { + unq = 0xFFFF; + } else { + unq = ((val << 16) + 0x8000) >> bits; + } + } else { + if (bits >= 16) { + unq = val; + } else { + if (val < 0) { + s = 1; + val = -val; + } + + if (val == 0) { + unq = 0; + } else if (val >= ((1 << (bits - 1)) - 1)) { + unq = 0x7FFF; + } else { + unq = ((val << 15) + 0x4000) >> (bits - 1); + } + + if (s) { + unq = -unq; + } + } + } + return unq; +} + +static int bcdec__interpolate(int a, int b, int* weights, int index) { + return (a * (64 - weights[index]) + b * weights[index] + 32) >> 6; +} + +static unsigned short bcdec__finish_unquantize(int val, int isSigned) { + int s; + + if (!isSigned) { + return (unsigned short)((val * 31) >> 6); /* scale the magnitude by 31 / 64 */ + } else { + val = (val < 0) ? -(((-val) * 31) >> 5) : (val * 31) >> 5; /* scale the magnitude by 31 / 32 */ + s = 0; + if (val < 0) { + s = 0x8000; + val = -val; + } + return (unsigned short)(s | val); + } +} + +/* modified half_to_float_fast4 from https://gist.github.com/rygorous/2144712 */ +static float bcdec__half_to_float_quick(unsigned short half) { + typedef union { + unsigned int u; + float f; + } FP32; + + static const FP32 magic = { 113 << 23 }; + static const unsigned int shifted_exp = 0x7c00 << 13; /* exponent mask after shift */ + FP32 o; + unsigned int exp; + + o.u = (half & 0x7fff) << 13; /* exponent/mantissa bits */ + exp = shifted_exp & o.u; /* just the exponent */ + o.u += (127 - 15) << 23; /* exponent adjust */ + + /* handle exponent special cases */ + if (exp == shifted_exp) { /* Inf/NaN? */ + o.u += (128 - 16) << 23; /* extra exp adjust */ + } else if (exp == 0) { /* Zero/Denormal? */ + o.u += 1 << 23; /* extra exp adjust */ + o.f -= magic.f; /* renormalize */ + } + + o.u |= (half & 0x8000) << 16; /* sign bit */ + return o.f; +} + +BCDECDEF void bcdec_bc6h_half(const void* compressedBlock, void* decompressedBlock, int destinationPitch, int isSigned) { + static char actual_bits_count[4][14] = { + { 10, 7, 11, 11, 11, 9, 8, 8, 8, 6, 10, 11, 12, 16 }, /* W */ + { 5, 6, 5, 4, 4, 5, 6, 5, 5, 6, 10, 9, 8, 4 }, /* dR */ + { 5, 6, 4, 5, 4, 5, 5, 6, 5, 6, 10, 9, 8, 4 }, /* dG */ + { 5, 6, 4, 4, 5, 5, 5, 5, 6, 6, 10, 9, 8, 4 } /* dB */ + }; + + /* There are 32 possible partition sets for a two-region tile. + Each 4x4 block represents a single shape. + Here also every fix-up index has MSB bit set. */ + static unsigned char partition_sets[32][4][4] = { + { {128, 0, 1, 1}, {0, 0, 1, 1}, { 0, 0, 1, 1}, {0, 0, 1, 129} }, /* 0 */ + { {128, 0, 0, 1}, {0, 0, 0, 1}, { 0, 0, 0, 1}, {0, 0, 0, 129} }, /* 1 */ + { {128, 1, 1, 1}, {0, 1, 1, 1}, { 0, 1, 1, 1}, {0, 1, 1, 129} }, /* 2 */ + { {128, 0, 0, 1}, {0, 0, 1, 1}, { 0, 0, 1, 1}, {0, 1, 1, 129} }, /* 3 */ + { {128, 0, 0, 0}, {0, 0, 0, 1}, { 0, 0, 0, 1}, {0, 0, 1, 129} }, /* 4 */ + { {128, 0, 1, 1}, {0, 1, 1, 1}, { 0, 1, 1, 1}, {1, 1, 1, 129} }, /* 5 */ + { {128, 0, 0, 1}, {0, 0, 1, 1}, { 0, 1, 1, 1}, {1, 1, 1, 129} }, /* 6 */ + { {128, 0, 0, 0}, {0, 0, 0, 1}, { 0, 0, 1, 1}, {0, 1, 1, 129} }, /* 7 */ + { {128, 0, 0, 0}, {0, 0, 0, 0}, { 0, 0, 0, 1}, {0, 0, 1, 129} }, /* 8 */ + { {128, 0, 1, 1}, {0, 1, 1, 1}, { 1, 1, 1, 1}, {1, 1, 1, 129} }, /* 9 */ + { {128, 0, 0, 0}, {0, 0, 0, 1}, { 0, 1, 1, 1}, {1, 1, 1, 129} }, /* 10 */ + { {128, 0, 0, 0}, {0, 0, 0, 0}, { 0, 0, 0, 1}, {0, 1, 1, 129} }, /* 11 */ + { {128, 0, 0, 1}, {0, 1, 1, 1}, { 1, 1, 1, 1}, {1, 1, 1, 129} }, /* 12 */ + { {128, 0, 0, 0}, {0, 0, 0, 0}, { 1, 1, 1, 1}, {1, 1, 1, 129} }, /* 13 */ + { {128, 0, 0, 0}, {1, 1, 1, 1}, { 1, 1, 1, 1}, {1, 1, 1, 129} }, /* 14 */ + { {128, 0, 0, 0}, {0, 0, 0, 0}, { 0, 0, 0, 0}, {1, 1, 1, 129} }, /* 15 */ + { {128, 0, 0, 0}, {1, 0, 0, 0}, { 1, 1, 1, 0}, {1, 1, 1, 129} }, /* 16 */ + { {128, 1, 129, 1}, {0, 0, 0, 1}, { 0, 0, 0, 0}, {0, 0, 0, 0} }, /* 17 */ + { {128, 0, 0, 0}, {0, 0, 0, 0}, {129, 0, 0, 0}, {1, 1, 1, 0} }, /* 18 */ + { {128, 1, 129, 1}, {0, 0, 1, 1}, { 0, 0, 0, 1}, {0, 0, 0, 0} }, /* 19 */ + { {128, 0, 129, 1}, {0, 0, 0, 1}, { 0, 0, 0, 0}, {0, 0, 0, 0} }, /* 20 */ + { {128, 0, 0, 0}, {1, 0, 0, 0}, {129, 1, 0, 0}, {1, 1, 1, 0} }, /* 21 */ + { {128, 0, 0, 0}, {0, 0, 0, 0}, {129, 0, 0, 0}, {1, 1, 0, 0} }, /* 22 */ + { {128, 1, 1, 1}, {0, 0, 1, 1}, { 0, 0, 1, 1}, {0, 0, 0, 129} }, /* 23 */ + { {128, 0, 129, 1}, {0, 0, 0, 1}, { 0, 0, 0, 1}, {0, 0, 0, 0} }, /* 24 */ + { {128, 0, 0, 0}, {1, 0, 0, 0}, {129, 0, 0, 0}, {1, 1, 0, 0} }, /* 25 */ + { {128, 1, 129, 0}, {0, 1, 1, 0}, { 0, 1, 1, 0}, {0, 1, 1, 0} }, /* 26 */ + { {128, 0, 129, 1}, {0, 1, 1, 0}, { 0, 1, 1, 0}, {1, 1, 0, 0} }, /* 27 */ + { {128, 0, 0, 1}, {0, 1, 1, 1}, {129, 1, 1, 0}, {1, 0, 0, 0} }, /* 28 */ + { {128, 0, 0, 0}, {1, 1, 1, 1}, {129, 1, 1, 1}, {0, 0, 0, 0} }, /* 29 */ + { {128, 1, 129, 1}, {0, 0, 0, 1}, { 1, 0, 0, 0}, {1, 1, 1, 0} }, /* 30 */ + { {128, 0, 129, 1}, {1, 0, 0, 1}, { 1, 0, 0, 1}, {1, 1, 0, 0} } /* 31 */ + }; + + static int aWeight3[8] = { 0, 9, 18, 27, 37, 46, 55, 64 }; + static int aWeight4[16] = { 0, 4, 9, 13, 17, 21, 26, 30, 34, 38, 43, 47, 51, 55, 60, 64 }; + + bcdec__bitstream_t bstream; + int mode, partition, numPartitions, i, j, partitionSet, indexBits, index, ep_i, actualBits0Mode; + int r[4], g[4], b[4]; /* wxyz */ + unsigned short* decompressed; + int* weights; + + decompressed = (unsigned short*)decompressedBlock; + + bstream.low = ((unsigned long long*)compressedBlock)[0]; + bstream.high = ((unsigned long long*)compressedBlock)[1]; + + r[0] = r[1] = r[2] = r[3] = 0; + g[0] = g[1] = g[2] = g[3] = 0; + b[0] = b[1] = b[2] = b[3] = 0; + + mode = bcdec__bitstream_read_bits(&bstream, 2); + if (mode > 1) { + mode |= (bcdec__bitstream_read_bits(&bstream, 3) << 2); + } + + /* modes >= 11 (10 in my code) are using 0 one, others will read it from the bitstream */ + partition = 0; + + switch (mode) { + /* mode 1 */ + case 0b00: { + /* Partitition indices: 46 bits + Partition: 5 bits + Color Endpoints: 75 bits (10.555, 10.555, 10.555) */ + g[2] |= bcdec__bitstream_read_bit(&bstream) << 4; /* gy[4] */ + b[2] |= bcdec__bitstream_read_bit(&bstream) << 4; /* by[4] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 4; /* bz[4] */ + r[0] |= bcdec__bitstream_read_bits(&bstream, 10); /* rw[9:0] */ + g[0] |= bcdec__bitstream_read_bits(&bstream, 10); /* gw[9:0] */ + b[0] |= bcdec__bitstream_read_bits(&bstream, 10); /* bw[9:0] */ + r[1] |= bcdec__bitstream_read_bits(&bstream, 5); /* rx[4:0] */ + g[3] |= bcdec__bitstream_read_bit(&bstream) << 4; /* gz[4] */ + g[2] |= bcdec__bitstream_read_bits(&bstream, 4); /* gy[3:0] */ + g[1] |= bcdec__bitstream_read_bits(&bstream, 5); /* gx[4:0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream); /* bz[0] */ + g[3] |= bcdec__bitstream_read_bits(&bstream, 4); /* gz[3:0] */ + b[1] |= bcdec__bitstream_read_bits(&bstream, 5); /* bx[4:0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 1; /* bz[1] */ + b[2] |= bcdec__bitstream_read_bits(&bstream, 4); /* by[3:0] */ + r[2] |= bcdec__bitstream_read_bits(&bstream, 5); /* ry[4:0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 2; /* bz[2] */ + r[3] |= bcdec__bitstream_read_bits(&bstream, 5); /* rz[4:0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 3; /* bz[3] */ + partition = bcdec__bitstream_read_bits(&bstream, 5); /* d[4:0] */ + mode = 0; + } break; + + /* mode 2 */ + case 0b01: { + /* Partitition indices: 46 bits + Partition: 5 bits + Color Endpoints: 75 bits (7666, 7666, 7666) */ + g[2] |= bcdec__bitstream_read_bit(&bstream) << 5; /* gy[5] */ + g[3] |= bcdec__bitstream_read_bit(&bstream) << 4; /* gz[4] */ + g[3] |= bcdec__bitstream_read_bit(&bstream) << 5; /* gz[5] */ + r[0] |= bcdec__bitstream_read_bits(&bstream, 7); /* rw[6:0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream); /* bz[0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 1; /* bz[1] */ + b[2] |= bcdec__bitstream_read_bit(&bstream) << 4; /* by[4] */ + g[0] |= bcdec__bitstream_read_bits(&bstream, 7); /* gw[6:0] */ + b[2] |= bcdec__bitstream_read_bit(&bstream) << 5; /* by[5] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 2; /* bz[2] */ + g[2] |= bcdec__bitstream_read_bit(&bstream) << 4; /* gy[4] */ + b[0] |= bcdec__bitstream_read_bits(&bstream, 7); /* bw[6:0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 3; /* bz[3] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 5; /* bz[5] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 4; /* bz[4] */ + r[1] |= bcdec__bitstream_read_bits(&bstream, 6); /* rx[5:0] */ + g[2] |= bcdec__bitstream_read_bits(&bstream, 4); /* gy[3:0] */ + g[1] |= bcdec__bitstream_read_bits(&bstream, 6); /* gx[5:0] */ + g[3] |= bcdec__bitstream_read_bits(&bstream, 4); /* gz[3:0] */ + b[1] |= bcdec__bitstream_read_bits(&bstream, 6); /* bx[5:0] */ + b[2] |= bcdec__bitstream_read_bits(&bstream, 4); /* by[3:0] */ + r[2] |= bcdec__bitstream_read_bits(&bstream, 6); /* ry[5:0] */ + r[3] |= bcdec__bitstream_read_bits(&bstream, 6); /* rz[5:0] */ + partition = bcdec__bitstream_read_bits(&bstream, 5); /* d[4:0] */ + mode = 1; + } break; + + /* mode 3 */ + case 0b00010: { + /* Partitition indices: 46 bits + Partition: 5 bits + Color Endpoints: 72 bits (11.555, 11.444, 11.444) */ + r[0] |= bcdec__bitstream_read_bits(&bstream, 10); /* rw[9:0] */ + g[0] |= bcdec__bitstream_read_bits(&bstream, 10); /* gw[9:0] */ + b[0] |= bcdec__bitstream_read_bits(&bstream, 10); /* bw[9:0] */ + r[1] |= bcdec__bitstream_read_bits(&bstream, 5); /* rx[4:0] */ + r[0] |= bcdec__bitstream_read_bit(&bstream) << 10; /* rw[10] */ + g[2] |= bcdec__bitstream_read_bits(&bstream, 4); /* gy[3:0] */ + g[1] |= bcdec__bitstream_read_bits(&bstream, 4); /* gx[3:0] */ + g[0] |= bcdec__bitstream_read_bit(&bstream) << 10; /* gw[10] */ + b[3] |= bcdec__bitstream_read_bit(&bstream); /* bz[0] */ + g[3] |= bcdec__bitstream_read_bits(&bstream, 4); /* gz[3:0] */ + b[1] |= bcdec__bitstream_read_bits(&bstream, 4); /* bx[3:0] */ + b[0] |= bcdec__bitstream_read_bit(&bstream) << 10; /* bw[10] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 1; /* bz[1] */ + b[2] |= bcdec__bitstream_read_bits(&bstream, 4); /* by[3:0] */ + r[2] |= bcdec__bitstream_read_bits(&bstream, 5); /* ry[4:0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 2; /* bz[2] */ + r[3] |= bcdec__bitstream_read_bits(&bstream, 5); /* rz[4:0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 3; /* bz[3] */ + partition = bcdec__bitstream_read_bits(&bstream, 5); /* d[4:0] */ + mode = 2; + } break; + + /* mode 4 */ + case 0b00110: { + /* Partitition indices: 46 bits + Partition: 5 bits + Color Endpoints: 72 bits (11.444, 11.555, 11.444) */ + r[0] |= bcdec__bitstream_read_bits(&bstream, 10); /* rw[9:0] */ + g[0] |= bcdec__bitstream_read_bits(&bstream, 10); /* gw[9:0] */ + b[0] |= bcdec__bitstream_read_bits(&bstream, 10); /* bw[9:0] */ + r[1] |= bcdec__bitstream_read_bits(&bstream, 4); /* rx[3:0] */ + r[0] |= bcdec__bitstream_read_bit(&bstream) << 10; /* rw[10] */ + g[3] |= bcdec__bitstream_read_bit(&bstream) << 4; /* gz[4] */ + g[2] |= bcdec__bitstream_read_bits(&bstream, 4); /* gy[3:0] */ + g[1] |= bcdec__bitstream_read_bits(&bstream, 5); /* gx[4:0] */ + g[0] |= bcdec__bitstream_read_bit(&bstream) << 10; /* gw[10] */ + g[3] |= bcdec__bitstream_read_bits(&bstream, 4); /* gz[3:0] */ + b[1] |= bcdec__bitstream_read_bits(&bstream, 4); /* bx[3:0] */ + b[0] |= bcdec__bitstream_read_bit(&bstream) << 10; /* bw[10] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 1; /* bz[1] */ + b[2] |= bcdec__bitstream_read_bits(&bstream, 4); /* by[3:0] */ + r[2] |= bcdec__bitstream_read_bits(&bstream, 4); /* ry[3:0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream); /* bz[0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 2; /* bz[2] */ + r[3] |= bcdec__bitstream_read_bits(&bstream, 4); /* rz[3:0] */ + g[2] |= bcdec__bitstream_read_bit(&bstream) << 4; /* gy[4] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 3; /* bz[3] */ + partition = bcdec__bitstream_read_bits(&bstream, 5); /* d[4:0] */ + mode = 3; + } break; + + /* mode 5 */ + case 0b01010: { + /* Partitition indices: 46 bits + Partition: 5 bits + Color Endpoints: 72 bits (11.444, 11.444, 11.555) */ + r[0] |= bcdec__bitstream_read_bits(&bstream, 10); /* rw[9:0] */ + g[0] |= bcdec__bitstream_read_bits(&bstream, 10); /* gw[9:0] */ + b[0] |= bcdec__bitstream_read_bits(&bstream, 10); /* bw[9:0] */ + r[1] |= bcdec__bitstream_read_bits(&bstream, 4); /* rx[3:0] */ + r[0] |= bcdec__bitstream_read_bit(&bstream) << 10; /* rw[10] */ + b[2] |= bcdec__bitstream_read_bit(&bstream) << 4; /* by[4] */ + g[2] |= bcdec__bitstream_read_bits(&bstream, 4); /* gy[3:0] */ + g[1] |= bcdec__bitstream_read_bits(&bstream, 4); /* gx[3:0] */ + g[0] |= bcdec__bitstream_read_bit(&bstream) << 10; /* gw[10] */ + b[3] |= bcdec__bitstream_read_bit(&bstream); /* bz[0] */ + g[3] |= bcdec__bitstream_read_bits(&bstream, 4); /* gz[3:0] */ + b[1] |= bcdec__bitstream_read_bits(&bstream, 5); /* bx[4:0] */ + b[0] |= bcdec__bitstream_read_bit(&bstream) << 10; /* bw[10] */ + b[2] |= bcdec__bitstream_read_bits(&bstream, 4); /* by[3:0] */ + r[2] |= bcdec__bitstream_read_bits(&bstream, 4); /* ry[3:0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 1; /* bz[1] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 2; /* bz[2] */ + r[3] |= bcdec__bitstream_read_bits(&bstream, 4); /* rz[3:0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 4; /* bz[4] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 3; /* bz[3] */ + partition = bcdec__bitstream_read_bits(&bstream, 5); /* d[4:0] */ + mode = 4; + } break; + + /* mode 6 */ + case 0b01110: { + /* Partitition indices: 46 bits + Partition: 5 bits + Color Endpoints: 72 bits (9555, 9555, 9555) */ + r[0] |= bcdec__bitstream_read_bits(&bstream, 9); /* rw[8:0] */ + b[2] |= bcdec__bitstream_read_bit(&bstream) << 4; /* by[4] */ + g[0] |= bcdec__bitstream_read_bits(&bstream, 9); /* gw[8:0] */ + g[2] |= bcdec__bitstream_read_bit(&bstream) << 4; /* gy[4] */ + b[0] |= bcdec__bitstream_read_bits(&bstream, 9); /* bw[8:0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 4; /* bz[4] */ + r[1] |= bcdec__bitstream_read_bits(&bstream, 5); /* rx[4:0] */ + g[3] |= bcdec__bitstream_read_bit(&bstream) << 4; /* gz[4] */ + g[2] |= bcdec__bitstream_read_bits(&bstream, 4); /* gy[3:0] */ + g[1] |= bcdec__bitstream_read_bits(&bstream, 5); /* gx[4:0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream); /* bz[0] */ + g[3] |= bcdec__bitstream_read_bits(&bstream, 4); /* gx[3:0] */ + b[1] |= bcdec__bitstream_read_bits(&bstream, 5); /* bx[4:0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 1; /* bz[1] */ + b[2] |= bcdec__bitstream_read_bits(&bstream, 4); /* by[3:0] */ + r[2] |= bcdec__bitstream_read_bits(&bstream, 5); /* ry[4:0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 2; /* bz[2] */ + r[3] |= bcdec__bitstream_read_bits(&bstream, 5); /* rz[4:0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 3; /* bz[3] */ + partition = bcdec__bitstream_read_bits(&bstream, 5); /* d[4:0] */ + mode = 5; + } break; + + /* mode 7 */ + case 0b10010: { + /* Partitition indices: 46 bits + Partition: 5 bits + Color Endpoints: 72 bits (8666, 8555, 8555) */ + r[0] |= bcdec__bitstream_read_bits(&bstream, 8); /* rw[7:0] */ + g[3] |= bcdec__bitstream_read_bit(&bstream) << 4; /* gz[4] */ + b[2] |= bcdec__bitstream_read_bit(&bstream) << 4; /* by[4] */ + g[0] |= bcdec__bitstream_read_bits(&bstream, 8); /* gw[7:0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 2; /* bz[2] */ + g[2] |= bcdec__bitstream_read_bit(&bstream) << 4; /* gy[4] */ + b[0] |= bcdec__bitstream_read_bits(&bstream, 8); /* bw[7:0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 3; /* bz[3] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 4; /* bz[4] */ + r[1] |= bcdec__bitstream_read_bits(&bstream, 6); /* rx[5:0] */ + g[2] |= bcdec__bitstream_read_bits(&bstream, 4); /* gy[3:0] */ + g[1] |= bcdec__bitstream_read_bits(&bstream, 5); /* gx[4:0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream); /* bz[0] */ + g[3] |= bcdec__bitstream_read_bits(&bstream, 4); /* gz[3:0] */ + b[1] |= bcdec__bitstream_read_bits(&bstream, 5); /* bx[4:0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 1; /* bz[1] */ + b[2] |= bcdec__bitstream_read_bits(&bstream, 4); /* by[3:0] */ + r[2] |= bcdec__bitstream_read_bits(&bstream, 6); /* ry[5:0] */ + r[3] |= bcdec__bitstream_read_bits(&bstream, 6); /* rz[5:0] */ + partition = bcdec__bitstream_read_bits(&bstream, 5); /* d[4:0] */ + mode = 6; + } break; + + /* mode 8 */ + case 0b10110: { + /* Partitition indices: 46 bits + Partition: 5 bits + Color Endpoints: 72 bits (8555, 8666, 8555) */ + r[0] |= bcdec__bitstream_read_bits(&bstream, 8); /* rw[7:0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream); /* bz[0] */ + b[2] |= bcdec__bitstream_read_bit(&bstream) << 4; /* by[4] */ + g[0] |= bcdec__bitstream_read_bits(&bstream, 8); /* gw[7:0] */ + g[2] |= bcdec__bitstream_read_bit(&bstream) << 5; /* gy[5] */ + g[2] |= bcdec__bitstream_read_bit(&bstream) << 4; /* gy[4] */ + b[0] |= bcdec__bitstream_read_bits(&bstream, 8); /* bw[7:0] */ + g[3] |= bcdec__bitstream_read_bit(&bstream) << 5; /* gz[5] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 4; /* bz[4] */ + r[1] |= bcdec__bitstream_read_bits(&bstream, 5); /* rx[4:0] */ + g[3] |= bcdec__bitstream_read_bit(&bstream) << 4; /* gz[4] */ + g[2] |= bcdec__bitstream_read_bits(&bstream, 4); /* gy[3:0] */ + g[1] |= bcdec__bitstream_read_bits(&bstream, 6); /* gx[5:0] */ + g[3] |= bcdec__bitstream_read_bits(&bstream, 4); /* zx[3:0] */ + b[1] |= bcdec__bitstream_read_bits(&bstream, 5); /* bx[4:0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 1; /* bz[1] */ + b[2] |= bcdec__bitstream_read_bits(&bstream, 4); /* by[3:0] */ + r[2] |= bcdec__bitstream_read_bits(&bstream, 5); /* ry[4:0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 2; /* bz[2] */ + r[3] |= bcdec__bitstream_read_bits(&bstream, 5); /* rz[4:0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 3; /* bz[3] */ + partition = bcdec__bitstream_read_bits(&bstream, 5); /* d[4:0] */ + mode = 7; + } break; + + /* mode 9 */ + case 0b11010: { + /* Partitition indices: 46 bits + Partition: 5 bits + Color Endpoints: 72 bits (8555, 8555, 8666) */ + r[0] |= bcdec__bitstream_read_bits(&bstream, 8); /* rw[7:0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 1; /* bz[1] */ + b[2] |= bcdec__bitstream_read_bit(&bstream) << 4; /* by[4] */ + g[0] |= bcdec__bitstream_read_bits(&bstream, 8); /* gw[7:0] */ + b[2] |= bcdec__bitstream_read_bit(&bstream) << 5; /* by[5] */ + g[2] |= bcdec__bitstream_read_bit(&bstream) << 4; /* gy[4] */ + b[0] |= bcdec__bitstream_read_bits(&bstream, 8); /* bw[7:0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 5; /* bz[5] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 4; /* bz[4] */ + r[1] |= bcdec__bitstream_read_bits(&bstream, 5); /* bw[4:0] */ + g[3] |= bcdec__bitstream_read_bit(&bstream) << 4; /* gz[4] */ + g[2] |= bcdec__bitstream_read_bits(&bstream, 4); /* gy[3:0] */ + g[1] |= bcdec__bitstream_read_bits(&bstream, 5); /* gx[4:0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream); /* bz[0] */ + g[3] |= bcdec__bitstream_read_bits(&bstream, 4); /* gz[3:0] */ + b[1] |= bcdec__bitstream_read_bits(&bstream, 6); /* bx[5:0] */ + b[2] |= bcdec__bitstream_read_bits(&bstream, 4); /* by[3:0] */ + r[2] |= bcdec__bitstream_read_bits(&bstream, 5); /* ry[4:0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 2; /* bz[2] */ + r[3] |= bcdec__bitstream_read_bits(&bstream, 5); /* rz[4:0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 3; /* bz[3] */ + partition = bcdec__bitstream_read_bits(&bstream, 5); /* d[4:0] */ + mode = 8; + } break; + + /* mode 10 */ + case 0b11110: { + /* Partitition indices: 46 bits + Partition: 5 bits + Color Endpoints: 72 bits (6666, 6666, 6666) */ + r[0] |= bcdec__bitstream_read_bits(&bstream, 6); /* rw[5:0] */ + g[3] |= bcdec__bitstream_read_bit(&bstream) << 4; /* gz[4] */ + b[3] |= bcdec__bitstream_read_bit(&bstream); /* bz[0] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 1; /* bz[1] */ + b[2] |= bcdec__bitstream_read_bit(&bstream) << 4; /* by[4] */ + g[0] |= bcdec__bitstream_read_bits(&bstream, 6); /* gw[5:0] */ + g[2] |= bcdec__bitstream_read_bit(&bstream) << 5; /* gy[5] */ + b[2] |= bcdec__bitstream_read_bit(&bstream) << 5; /* by[5] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 2; /* bz[2] */ + g[2] |= bcdec__bitstream_read_bit(&bstream) << 4; /* gy[4] */ + b[0] |= bcdec__bitstream_read_bits(&bstream, 6); /* bw[5:0] */ + g[3] |= bcdec__bitstream_read_bit(&bstream) << 5; /* gz[5] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 3; /* bz[3] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 5; /* bz[5] */ + b[3] |= bcdec__bitstream_read_bit(&bstream) << 4; /* bz[4] */ + r[1] |= bcdec__bitstream_read_bits(&bstream, 6); /* rx[5:0] */ + g[2] |= bcdec__bitstream_read_bits(&bstream, 4); /* gy[3:0] */ + g[1] |= bcdec__bitstream_read_bits(&bstream, 6); /* gx[5:0] */ + g[3] |= bcdec__bitstream_read_bits(&bstream, 4); /* gz[3:0] */ + b[1] |= bcdec__bitstream_read_bits(&bstream, 6); /* bx[5:0] */ + b[2] |= bcdec__bitstream_read_bits(&bstream, 4); /* by[3:0] */ + r[2] |= bcdec__bitstream_read_bits(&bstream, 6); /* ry[5:0] */ + r[3] |= bcdec__bitstream_read_bits(&bstream, 6); /* rz[5:0] */ + partition = bcdec__bitstream_read_bits(&bstream, 5); /* d[4:0] */ + mode = 9; + } break; + + /* mode 11 */ + case 0b00011: { + /* Partitition indices: 63 bits + Partition: 0 bits + Color Endpoints: 60 bits (10.10, 10.10, 10.10) */ + r[0] |= bcdec__bitstream_read_bits(&bstream, 10); /* rw[9:0] */ + g[0] |= bcdec__bitstream_read_bits(&bstream, 10); /* gw[9:0] */ + b[0] |= bcdec__bitstream_read_bits(&bstream, 10); /* bw[9:0] */ + r[1] |= bcdec__bitstream_read_bits(&bstream, 10); /* rx[9:0] */ + g[1] |= bcdec__bitstream_read_bits(&bstream, 10); /* gx[9:0] */ + b[1] |= bcdec__bitstream_read_bits(&bstream, 10); /* bx[9:0] */ + mode = 10; + } break; + + /* mode 12 */ + case 0b00111: { + /* Partitition indices: 63 bits + Partition: 0 bits + Color Endpoints: 60 bits (11.9, 11.9, 11.9) */ + r[0] |= bcdec__bitstream_read_bits(&bstream, 10); /* rw[9:0] */ + g[0] |= bcdec__bitstream_read_bits(&bstream, 10); /* gw[9:0] */ + b[0] |= bcdec__bitstream_read_bits(&bstream, 10); /* bw[9:0] */ + r[1] |= bcdec__bitstream_read_bits(&bstream, 9); /* rx[8:0] */ + r[0] |= bcdec__bitstream_read_bit(&bstream) << 10; /* rw[10] */ + g[1] |= bcdec__bitstream_read_bits(&bstream, 9); /* gx[8:0] */ + g[0] |= bcdec__bitstream_read_bit(&bstream) << 10; /* gw[10] */ + b[1] |= bcdec__bitstream_read_bits(&bstream, 9); /* bx[8:0] */ + b[0] |= bcdec__bitstream_read_bit(&bstream) << 10; /* bw[10] */ + mode = 11; + } break; + + /* mode 13 */ + case 0b01011: { + /* Partitition indices: 63 bits + Partition: 0 bits + Color Endpoints: 60 bits (12.8, 12.8, 12.8) */ + r[0] |= bcdec__bitstream_read_bits(&bstream, 10); /* rw[9:0] */ + g[0] |= bcdec__bitstream_read_bits(&bstream, 10); /* gw[9:0] */ + b[0] |= bcdec__bitstream_read_bits(&bstream, 10); /* bw[9:0] */ + r[1] |= bcdec__bitstream_read_bits(&bstream, 8); /* rx[7:0] */ + r[0] |= bcdec__bitstream_read_bits_r(&bstream, 2) << 10;/* rx[10:11] */ + g[1] |= bcdec__bitstream_read_bits(&bstream, 8); /* gx[7:0] */ + g[0] |= bcdec__bitstream_read_bits_r(&bstream, 2) << 10;/* gx[10:11] */ + b[1] |= bcdec__bitstream_read_bits(&bstream, 8); /* bx[7:0] */ + b[0] |= bcdec__bitstream_read_bits_r(&bstream, 2) << 10;/* bx[10:11] */ + mode = 12; + } break; + + /* mode 14 */ + case 0b01111: { + /* Partitition indices: 63 bits + Partition: 0 bits + Color Endpoints: 60 bits (16.4, 16.4, 16.4) */ + r[0] |= bcdec__bitstream_read_bits(&bstream, 10); /* rw[9:0] */ + g[0] |= bcdec__bitstream_read_bits(&bstream, 10); /* gw[9:0] */ + b[0] |= bcdec__bitstream_read_bits(&bstream, 10); /* bw[9:0] */ + r[1] |= bcdec__bitstream_read_bits(&bstream, 4); /* rx[3:0] */ + r[0] |= bcdec__bitstream_read_bits_r(&bstream, 6) << 10;/* rw[10:15] */ + g[1] |= bcdec__bitstream_read_bits(&bstream, 4); /* gx[3:0] */ + g[0] |= bcdec__bitstream_read_bits_r(&bstream, 6) << 10;/* gw[10:15] */ + b[1] |= bcdec__bitstream_read_bits(&bstream, 4); /* bx[3:0] */ + b[0] |= bcdec__bitstream_read_bits_r(&bstream, 6) << 10;/* bw[10:15] */ + mode = 13; + } break; + + default: { + /* Modes 10011, 10111, 11011, and 11111 (not shown) are reserved. + Do not use these in your encoder. If the hardware is passed blocks + with one of these modes specified, the resulting decompressed block + must contain all zeroes in all channels except for the alpha channel. */ + for (i = 0; i < 4; ++i) { + for (j = 0; j < 4; ++j) { + decompressed[j * 3 + 0] = 0; + decompressed[j * 3 + 1] = 0; + decompressed[j * 3 + 2] = 0; + } + decompressed += destinationPitch; + } + + return; + } + } + + numPartitions = (mode >= 10) ? 0 : 1; + + actualBits0Mode = actual_bits_count[0][mode]; + if (isSigned) { + r[0] = bcdec__extend_sign(r[0], actualBits0Mode); + g[0] = bcdec__extend_sign(g[0], actualBits0Mode); + b[0] = bcdec__extend_sign(b[0], actualBits0Mode); + } + + /* Mode 11 (like Mode 10) does not use delta compression, + and instead stores both color endpoints explicitly. */ + if ((mode != 9 && mode != 10) || isSigned) { + for (i = 1; i < (numPartitions + 1) * 2; ++i) { + r[i] = bcdec__extend_sign(r[i], actual_bits_count[1][mode]); + g[i] = bcdec__extend_sign(g[i], actual_bits_count[2][mode]); + b[i] = bcdec__extend_sign(b[i], actual_bits_count[3][mode]); + } + } + + if (mode != 9 && mode != 10) { + for (i = 1; i < (numPartitions + 1) * 2; ++i) { + r[i] = bcdec__transform_inverse(r[i], r[0], actualBits0Mode, isSigned); + g[i] = bcdec__transform_inverse(g[i], g[0], actualBits0Mode, isSigned); + b[i] = bcdec__transform_inverse(b[i], b[0], actualBits0Mode, isSigned); + } + } + + for (i = 0; i < (numPartitions + 1) * 2; ++i) { + r[i] = bcdec__unquantize(r[i], actualBits0Mode, isSigned); + g[i] = bcdec__unquantize(g[i], actualBits0Mode, isSigned); + b[i] = bcdec__unquantize(b[i], actualBits0Mode, isSigned); + } + + weights = (mode >= 10) ? aWeight4 : aWeight3; + for (i = 0; i < 4; ++i) { + for (j = 0; j < 4; ++j) { + partitionSet = (mode >= 10) ? ((i|j) ? 0 : 128) : partition_sets[partition][i][j]; + + indexBits = (mode >= 10) ? 4 : 3; + /* fix-up index is specified with one less bit */ + /* The fix-up index for subset 0 is always index 0 */ + if (partitionSet & 0x80) { + indexBits--; + } + partitionSet &= 0x01; + + index = bcdec__bitstream_read_bits(&bstream, indexBits); + + ep_i = partitionSet * 2; + decompressed[j * 3 + 0] = bcdec__finish_unquantize( + bcdec__interpolate(r[ep_i], r[ep_i+1], weights, index), isSigned); + decompressed[j * 3 + 1] = bcdec__finish_unquantize( + bcdec__interpolate(g[ep_i], g[ep_i+1], weights, index), isSigned); + decompressed[j * 3 + 2] = bcdec__finish_unquantize( + bcdec__interpolate(b[ep_i], b[ep_i+1], weights, index), isSigned); + } + + decompressed += destinationPitch; + } +} + +BCDECDEF void bcdec_bc6h_float(const void* compressedBlock, void* decompressedBlock, int destinationPitch, int isSigned) { + unsigned short block[16*3]; + float* decompressed; + const unsigned short* b; + int i, j; + + bcdec_bc6h_half(compressedBlock, block, 4*3, isSigned); + b = block; + decompressed = (float*)decompressedBlock; + for (i = 0; i < 4; ++i) { + for (j = 0; j < 4; ++j) { + decompressed[j * 3 + 0] = bcdec__half_to_float_quick(*b++); + decompressed[j * 3 + 1] = bcdec__half_to_float_quick(*b++); + decompressed[j * 3 + 2] = bcdec__half_to_float_quick(*b++); + } + decompressed += destinationPitch; + } +} + +static void bcdec__swap_values(int* a, int* b) { + a[0] ^= b[0], b[0] ^= a[0], a[0] ^= b[0]; +} + +BCDECDEF void bcdec_bc7(const void* compressedBlock, void* decompressedBlock, int destinationPitch) { + static char actual_bits_count[2][8] = { + { 4, 6, 5, 7, 5, 7, 7, 5 }, /* RGBA */ + { 0, 0, 0, 0, 6, 8, 7, 5 }, /* Alpha */ + }; + + /* There are 64 possible partition sets for a two-region tile. + Each 4x4 block represents a single shape. + Here also every fix-up index has MSB bit set. */ + static unsigned char partition_sets[2][64][4][4] = { + { /* Partition table for 2-subset BPTC */ + { {128, 0, 1, 1}, {0, 0, 1, 1}, { 0, 0, 1, 1}, {0, 0, 1, 129} }, /* 0 */ + { {128, 0, 0, 1}, {0, 0, 0, 1}, { 0, 0, 0, 1}, {0, 0, 0, 129} }, /* 1 */ + { {128, 1, 1, 1}, {0, 1, 1, 1}, { 0, 1, 1, 1}, {0, 1, 1, 129} }, /* 2 */ + { {128, 0, 0, 1}, {0, 0, 1, 1}, { 0, 0, 1, 1}, {0, 1, 1, 129} }, /* 3 */ + { {128, 0, 0, 0}, {0, 0, 0, 1}, { 0, 0, 0, 1}, {0, 0, 1, 129} }, /* 4 */ + { {128, 0, 1, 1}, {0, 1, 1, 1}, { 0, 1, 1, 1}, {1, 1, 1, 129} }, /* 5 */ + { {128, 0, 0, 1}, {0, 0, 1, 1}, { 0, 1, 1, 1}, {1, 1, 1, 129} }, /* 6 */ + { {128, 0, 0, 0}, {0, 0, 0, 1}, { 0, 0, 1, 1}, {0, 1, 1, 129} }, /* 7 */ + { {128, 0, 0, 0}, {0, 0, 0, 0}, { 0, 0, 0, 1}, {0, 0, 1, 129} }, /* 8 */ + { {128, 0, 1, 1}, {0, 1, 1, 1}, { 1, 1, 1, 1}, {1, 1, 1, 129} }, /* 9 */ + { {128, 0, 0, 0}, {0, 0, 0, 1}, { 0, 1, 1, 1}, {1, 1, 1, 129} }, /* 10 */ + { {128, 0, 0, 0}, {0, 0, 0, 0}, { 0, 0, 0, 1}, {0, 1, 1, 129} }, /* 11 */ + { {128, 0, 0, 1}, {0, 1, 1, 1}, { 1, 1, 1, 1}, {1, 1, 1, 129} }, /* 12 */ + { {128, 0, 0, 0}, {0, 0, 0, 0}, { 1, 1, 1, 1}, {1, 1, 1, 129} }, /* 13 */ + { {128, 0, 0, 0}, {1, 1, 1, 1}, { 1, 1, 1, 1}, {1, 1, 1, 129} }, /* 14 */ + { {128, 0, 0, 0}, {0, 0, 0, 0}, { 0, 0, 0, 0}, {1, 1, 1, 129} }, /* 15 */ + { {128, 0, 0, 0}, {1, 0, 0, 0}, { 1, 1, 1, 0}, {1, 1, 1, 129} }, /* 16 */ + { {128, 1, 129, 1}, {0, 0, 0, 1}, { 0, 0, 0, 0}, {0, 0, 0, 0} }, /* 17 */ + { {128, 0, 0, 0}, {0, 0, 0, 0}, {129, 0, 0, 0}, {1, 1, 1, 0} }, /* 18 */ + { {128, 1, 129, 1}, {0, 0, 1, 1}, { 0, 0, 0, 1}, {0, 0, 0, 0} }, /* 19 */ + { {128, 0, 129, 1}, {0, 0, 0, 1}, { 0, 0, 0, 0}, {0, 0, 0, 0} }, /* 20 */ + { {128, 0, 0, 0}, {1, 0, 0, 0}, {129, 1, 0, 0}, {1, 1, 1, 0} }, /* 21 */ + { {128, 0, 0, 0}, {0, 0, 0, 0}, {129, 0, 0, 0}, {1, 1, 0, 0} }, /* 22 */ + { {128, 1, 1, 1}, {0, 0, 1, 1}, { 0, 0, 1, 1}, {0, 0, 0, 129} }, /* 23 */ + { {128, 0, 129, 1}, {0, 0, 0, 1}, { 0, 0, 0, 1}, {0, 0, 0, 0} }, /* 24 */ + { {128, 0, 0, 0}, {1, 0, 0, 0}, {129, 0, 0, 0}, {1, 1, 0, 0} }, /* 25 */ + { {128, 1, 129, 0}, {0, 1, 1, 0}, { 0, 1, 1, 0}, {0, 1, 1, 0} }, /* 26 */ + { {128, 0, 129, 1}, {0, 1, 1, 0}, { 0, 1, 1, 0}, {1, 1, 0, 0} }, /* 27 */ + { {128, 0, 0, 1}, {0, 1, 1, 1}, {129, 1, 1, 0}, {1, 0, 0, 0} }, /* 28 */ + { {128, 0, 0, 0}, {1, 1, 1, 1}, {129, 1, 1, 1}, {0, 0, 0, 0} }, /* 29 */ + { {128, 1, 129, 1}, {0, 0, 0, 1}, { 1, 0, 0, 0}, {1, 1, 1, 0} }, /* 30 */ + { {128, 0, 129, 1}, {1, 0, 0, 1}, { 1, 0, 0, 1}, {1, 1, 0, 0} }, /* 31 */ + { {128, 1, 0, 1}, {0, 1, 0, 1}, { 0, 1, 0, 1}, {0, 1, 0, 129} }, /* 32 */ + { {128, 0, 0, 0}, {1, 1, 1, 1}, { 0, 0, 0, 0}, {1, 1, 1, 129} }, /* 33 */ + { {128, 1, 0, 1}, {1, 0, 129, 0}, { 0, 1, 0, 1}, {1, 0, 1, 0} }, /* 34 */ + { {128, 0, 1, 1}, {0, 0, 1, 1}, {129, 1, 0, 0}, {1, 1, 0, 0} }, /* 35 */ + { {128, 0, 129, 1}, {1, 1, 0, 0}, { 0, 0, 1, 1}, {1, 1, 0, 0} }, /* 36 */ + { {128, 1, 0, 1}, {0, 1, 0, 1}, {129, 0, 1, 0}, {1, 0, 1, 0} }, /* 37 */ + { {128, 1, 1, 0}, {1, 0, 0, 1}, { 0, 1, 1, 0}, {1, 0, 0, 129} }, /* 38 */ + { {128, 1, 0, 1}, {1, 0, 1, 0}, { 1, 0, 1, 0}, {0, 1, 0, 129} }, /* 39 */ + { {128, 1, 129, 1}, {0, 0, 1, 1}, { 1, 1, 0, 0}, {1, 1, 1, 0} }, /* 40 */ + { {128, 0, 0, 1}, {0, 0, 1, 1}, {129, 1, 0, 0}, {1, 0, 0, 0} }, /* 41 */ + { {128, 0, 129, 1}, {0, 0, 1, 0}, { 0, 1, 0, 0}, {1, 1, 0, 0} }, /* 42 */ + { {128, 0, 129, 1}, {1, 0, 1, 1}, { 1, 1, 0, 1}, {1, 1, 0, 0} }, /* 43 */ + { {128, 1, 129, 0}, {1, 0, 0, 1}, { 1, 0, 0, 1}, {0, 1, 1, 0} }, /* 44 */ + { {128, 0, 1, 1}, {1, 1, 0, 0}, { 1, 1, 0, 0}, {0, 0, 1, 129} }, /* 45 */ + { {128, 1, 1, 0}, {0, 1, 1, 0}, { 1, 0, 0, 1}, {1, 0, 0, 129} }, /* 46 */ + { {128, 0, 0, 0}, {0, 1, 129, 0}, { 0, 1, 1, 0}, {0, 0, 0, 0} }, /* 47 */ + { {128, 1, 0, 0}, {1, 1, 129, 0}, { 0, 1, 0, 0}, {0, 0, 0, 0} }, /* 48 */ + { {128, 0, 129, 0}, {0, 1, 1, 1}, { 0, 0, 1, 0}, {0, 0, 0, 0} }, /* 49 */ + { {128, 0, 0, 0}, {0, 0, 129, 0}, { 0, 1, 1, 1}, {0, 0, 1, 0} }, /* 50 */ + { {128, 0, 0, 0}, {0, 1, 0, 0}, {129, 1, 1, 0}, {0, 1, 0, 0} }, /* 51 */ + { {128, 1, 1, 0}, {1, 1, 0, 0}, { 1, 0, 0, 1}, {0, 0, 1, 129} }, /* 52 */ + { {128, 0, 1, 1}, {0, 1, 1, 0}, { 1, 1, 0, 0}, {1, 0, 0, 129} }, /* 53 */ + { {128, 1, 129, 0}, {0, 0, 1, 1}, { 1, 0, 0, 1}, {1, 1, 0, 0} }, /* 54 */ + { {128, 0, 129, 1}, {1, 0, 0, 1}, { 1, 1, 0, 0}, {0, 1, 1, 0} }, /* 55 */ + { {128, 1, 1, 0}, {1, 1, 0, 0}, { 1, 1, 0, 0}, {1, 0, 0, 129} }, /* 56 */ + { {128, 1, 1, 0}, {0, 0, 1, 1}, { 0, 0, 1, 1}, {1, 0, 0, 129} }, /* 57 */ + { {128, 1, 1, 1}, {1, 1, 1, 0}, { 1, 0, 0, 0}, {0, 0, 0, 129} }, /* 58 */ + { {128, 0, 0, 1}, {1, 0, 0, 0}, { 1, 1, 1, 0}, {0, 1, 1, 129} }, /* 59 */ + { {128, 0, 0, 0}, {1, 1, 1, 1}, { 0, 0, 1, 1}, {0, 0, 1, 129} }, /* 60 */ + { {128, 0, 129, 1}, {0, 0, 1, 1}, { 1, 1, 1, 1}, {0, 0, 0, 0} }, /* 61 */ + { {128, 0, 129, 0}, {0, 0, 1, 0}, { 1, 1, 1, 0}, {1, 1, 1, 0} }, /* 62 */ + { {128, 1, 0, 0}, {0, 1, 0, 0}, { 0, 1, 1, 1}, {0, 1, 1, 129} } /* 63 */ + }, + { /* Partition table for 3-subset BPTC */ + { {128, 0, 1, 129}, {0, 0, 1, 1}, { 0, 2, 2, 1}, { 2, 2, 2, 130} }, /* 0 */ + { {128, 0, 0, 129}, {0, 0, 1, 1}, {130, 2, 1, 1}, { 2, 2, 2, 1} }, /* 1 */ + { {128, 0, 0, 0}, {2, 0, 0, 1}, {130, 2, 1, 1}, { 2, 2, 1, 129} }, /* 2 */ + { {128, 2, 2, 130}, {0, 0, 2, 2}, { 0, 0, 1, 1}, { 0, 1, 1, 129} }, /* 3 */ + { {128, 0, 0, 0}, {0, 0, 0, 0}, {129, 1, 2, 2}, { 1, 1, 2, 130} }, /* 4 */ + { {128, 0, 1, 129}, {0, 0, 1, 1}, { 0, 0, 2, 2}, { 0, 0, 2, 130} }, /* 5 */ + { {128, 0, 2, 130}, {0, 0, 2, 2}, { 1, 1, 1, 1}, { 1, 1, 1, 129} }, /* 6 */ + { {128, 0, 1, 1}, {0, 0, 1, 1}, {130, 2, 1, 1}, { 2, 2, 1, 129} }, /* 7 */ + { {128, 0, 0, 0}, {0, 0, 0, 0}, {129, 1, 1, 1}, { 2, 2, 2, 130} }, /* 8 */ + { {128, 0, 0, 0}, {1, 1, 1, 1}, {129, 1, 1, 1}, { 2, 2, 2, 130} }, /* 9 */ + { {128, 0, 0, 0}, {1, 1, 129, 1}, { 2, 2, 2, 2}, { 2, 2, 2, 130} }, /* 10 */ + { {128, 0, 1, 2}, {0, 0, 129, 2}, { 0, 0, 1, 2}, { 0, 0, 1, 130} }, /* 11 */ + { {128, 1, 1, 2}, {0, 1, 129, 2}, { 0, 1, 1, 2}, { 0, 1, 1, 130} }, /* 12 */ + { {128, 1, 2, 2}, {0, 129, 2, 2}, { 0, 1, 2, 2}, { 0, 1, 2, 130} }, /* 13 */ + { {128, 0, 1, 129}, {0, 1, 1, 2}, { 1, 1, 2, 2}, { 1, 2, 2, 130} }, /* 14 */ + { {128, 0, 1, 129}, {2, 0, 0, 1}, {130, 2, 0, 0}, { 2, 2, 2, 0} }, /* 15 */ + { {128, 0, 0, 129}, {0, 0, 1, 1}, { 0, 1, 1, 2}, { 1, 1, 2, 130} }, /* 16 */ + { {128, 1, 1, 129}, {0, 0, 1, 1}, {130, 0, 0, 1}, { 2, 2, 0, 0} }, /* 17 */ + { {128, 0, 0, 0}, {1, 1, 2, 2}, {129, 1, 2, 2}, { 1, 1, 2, 130} }, /* 18 */ + { {128, 0, 2, 130}, {0, 0, 2, 2}, { 0, 0, 2, 2}, { 1, 1, 1, 129} }, /* 19 */ + { {128, 1, 1, 129}, {0, 1, 1, 1}, { 0, 2, 2, 2}, { 0, 2, 2, 130} }, /* 20 */ + { {128, 0, 0, 129}, {0, 0, 0, 1}, {130, 2, 2, 1}, { 2, 2, 2, 1} }, /* 21 */ + { {128, 0, 0, 0}, {0, 0, 129, 1}, { 0, 1, 2, 2}, { 0, 1, 2, 130} }, /* 22 */ + { {128, 0, 0, 0}, {1, 1, 0, 0}, {130, 2, 129, 0}, { 2, 2, 1, 0} }, /* 23 */ + { {128, 1, 2, 130}, {0, 129, 2, 2}, { 0, 0, 1, 1}, { 0, 0, 0, 0} }, /* 24 */ + { {128, 0, 1, 2}, {0, 0, 1, 2}, {129, 1, 2, 2}, { 2, 2, 2, 130} }, /* 25 */ + { {128, 1, 1, 0}, {1, 2, 130, 1}, {129, 2, 2, 1}, { 0, 1, 1, 0} }, /* 26 */ + { {128, 0, 0, 0}, {0, 1, 129, 0}, { 1, 2, 130, 1}, { 1, 2, 2, 1} }, /* 27 */ + { {128, 0, 2, 2}, {1, 1, 0, 2}, {129, 1, 0, 2}, { 0, 0, 2, 130} }, /* 28 */ + { {128, 1, 1, 0}, {0, 129, 1, 0}, { 2, 0, 0, 2}, { 2, 2, 2, 130} }, /* 29 */ + { {128, 0, 1, 1}, {0, 1, 2, 2}, { 0, 1, 130, 2}, { 0, 0, 1, 129} }, /* 30 */ + { {128, 0, 0, 0}, {2, 0, 0, 0}, {130, 2, 1, 1}, { 2, 2, 2, 129} }, /* 31 */ + { {128, 0, 0, 0}, {0, 0, 0, 2}, {129, 1, 2, 2}, { 1, 2, 2, 130} }, /* 32 */ + { {128, 2, 2, 130}, {0, 0, 2, 2}, { 0, 0, 1, 2}, { 0, 0, 1, 129} }, /* 33 */ + { {128, 0, 1, 129}, {0, 0, 1, 2}, { 0, 0, 2, 2}, { 0, 2, 2, 130} }, /* 34 */ + { {128, 1, 2, 0}, {0, 129, 2, 0}, { 0, 1, 130, 0}, { 0, 1, 2, 0} }, /* 35 */ + { {128, 0, 0, 0}, {1, 1, 129, 1}, { 2, 2, 130, 2}, { 0, 0, 0, 0} }, /* 36 */ + { {128, 1, 2, 0}, {1, 2, 0, 1}, {130, 0, 129, 2}, { 0, 1, 2, 0} }, /* 37 */ + { {128, 1, 2, 0}, {2, 0, 1, 2}, {129, 130, 0, 1}, { 0, 1, 2, 0} }, /* 38 */ + { {128, 0, 1, 1}, {2, 2, 0, 0}, { 1, 1, 130, 2}, { 0, 0, 1, 129} }, /* 39 */ + { {128, 0, 1, 1}, {1, 1, 130, 2}, { 2, 2, 0, 0}, { 0, 0, 1, 129} }, /* 40 */ + { {128, 1, 0, 129}, {0, 1, 0, 1}, { 2, 2, 2, 2}, { 2, 2, 2, 130} }, /* 41 */ + { {128, 0, 0, 0}, {0, 0, 0, 0}, {130, 1, 2, 1}, { 2, 1, 2, 129} }, /* 42 */ + { {128, 0, 2, 2}, {1, 129, 2, 2}, { 0, 0, 2, 2}, { 1, 1, 2, 130} }, /* 43 */ + { {128, 0, 2, 130}, {0, 0, 1, 1}, { 0, 0, 2, 2}, { 0, 0, 1, 129} }, /* 44 */ + { {128, 2, 2, 0}, {1, 2, 130, 1}, { 0, 2, 2, 0}, { 1, 2, 2, 129} }, /* 45 */ + { {128, 1, 0, 1}, {2, 2, 130, 2}, { 2, 2, 2, 2}, { 0, 1, 0, 129} }, /* 46 */ + { {128, 0, 0, 0}, {2, 1, 2, 1}, {130, 1, 2, 1}, { 2, 1, 2, 129} }, /* 47 */ + { {128, 1, 0, 129}, {0, 1, 0, 1}, { 0, 1, 0, 1}, { 2, 2, 2, 130} }, /* 48 */ + { {128, 2, 2, 130}, {0, 1, 1, 1}, { 0, 2, 2, 2}, { 0, 1, 1, 129} }, /* 49 */ + { {128, 0, 0, 2}, {1, 129, 1, 2}, { 0, 0, 0, 2}, { 1, 1, 1, 130} }, /* 50 */ + { {128, 0, 0, 0}, {2, 129, 1, 2}, { 2, 1, 1, 2}, { 2, 1, 1, 130} }, /* 51 */ + { {128, 2, 2, 2}, {0, 129, 1, 1}, { 0, 1, 1, 1}, { 0, 2, 2, 130} }, /* 52 */ + { {128, 0, 0, 2}, {1, 1, 1, 2}, {129, 1, 1, 2}, { 0, 0, 0, 130} }, /* 53 */ + { {128, 1, 1, 0}, {0, 129, 1, 0}, { 0, 1, 1, 0}, { 2, 2, 2, 130} }, /* 54 */ + { {128, 0, 0, 0}, {0, 0, 0, 0}, { 2, 1, 129, 2}, { 2, 1, 1, 130} }, /* 55 */ + { {128, 1, 1, 0}, {0, 129, 1, 0}, { 2, 2, 2, 2}, { 2, 2, 2, 130} }, /* 56 */ + { {128, 0, 2, 2}, {0, 0, 1, 1}, { 0, 0, 129, 1}, { 0, 0, 2, 130} }, /* 57 */ + { {128, 0, 2, 2}, {1, 1, 2, 2}, {129, 1, 2, 2}, { 0, 0, 2, 130} }, /* 58 */ + { {128, 0, 0, 0}, {0, 0, 0, 0}, { 0, 0, 0, 0}, { 2, 129, 1, 130} }, /* 59 */ + { {128, 0, 0, 130}, {0, 0, 0, 1}, { 0, 0, 0, 2}, { 0, 0, 0, 129} }, /* 60 */ + { {128, 2, 2, 2}, {1, 2, 2, 2}, { 0, 2, 2, 2}, {129, 2, 2, 130} }, /* 61 */ + { {128, 1, 0, 129}, {2, 2, 2, 2}, { 2, 2, 2, 2}, { 2, 2, 2, 130} }, /* 62 */ + { {128, 1, 1, 129}, {2, 0, 1, 1}, {130, 2, 0, 1}, { 2, 2, 2, 0} } /* 63 */ + } + }; + + static int aWeight2[] = { 0, 21, 43, 64 }; + static int aWeight3[] = { 0, 9, 18, 27, 37, 46, 55, 64 }; + static int aWeight4[] = { 0, 4, 9, 13, 17, 21, 26, 30, 34, 38, 43, 47, 51, 55, 60, 64 }; + + static unsigned char sModeHasPBits = 0b11001011; + + bcdec__bitstream_t bstream; + int mode, partition, numPartitions, numEndpoints, i, j, k, rotation, partitionSet; + int indexSelectionBit, indexBits, indexBits2, index, index2; + int endpoints[6][4]; + char indices[4][4]; + int r, g, b, a; + int* weights, * weights2; + unsigned char* decompressed; + + decompressed = (unsigned char*)decompressedBlock; + + bstream.low = ((unsigned long long*)compressedBlock)[0]; + bstream.high = ((unsigned long long*)compressedBlock)[1]; + + for (mode = 0; mode < 8 && (0 == bcdec__bitstream_read_bit(&bstream)); ++mode); + + /* unexpected mode, clear the block (transparent black) */ + if (mode >= 8) { + for (i = 0; i < 4; ++i) { + for (j = 0; j < 4; ++j) { + decompressed[j * 4 + 0] = 0; + decompressed[j * 4 + 1] = 0; + decompressed[j * 4 + 2] = 0; + decompressed[j * 4 + 3] = 0; + } + decompressed += destinationPitch; + } + + return; + } + + partition = 0; + numPartitions = 1; + rotation = 0; + indexSelectionBit = 0; + + if (mode == 0 || mode == 1 || mode == 2 || mode == 3 || mode == 7) { + numPartitions = (mode == 0 || mode == 2) ? 3 : 2; + partition = bcdec__bitstream_read_bits(&bstream, (mode == 0) ? 4 : 6); + } + + numEndpoints = numPartitions * 2; + + if (mode == 4 || mode == 5) { + rotation = bcdec__bitstream_read_bits(&bstream, 2); + + if (mode == 4) { + indexSelectionBit = bcdec__bitstream_read_bit(&bstream); + } + } + + /* Extract endpoints */ + /* RGB */ + for (i = 0; i < 3; ++i) { + for (j = 0; j < numEndpoints; ++j) { + endpoints[j][i] = bcdec__bitstream_read_bits(&bstream, actual_bits_count[0][mode]); + } + } + /* Alpha (if any) */ + if (actual_bits_count[1][mode] > 0) { + for (j = 0; j < numEndpoints; ++j) { + endpoints[j][3] = bcdec__bitstream_read_bits(&bstream, actual_bits_count[1][mode]); + } + } + + /* Fully decode endpoints */ + /* First handle modes that have P-bits */ + if (mode == 0 || mode == 1 || mode == 3 || mode == 6 || mode == 7) { + for (i = 0; i < numEndpoints; ++i) { + /* component-wise left-shift */ + for (j = 0; j < 4; ++j) { + endpoints[i][j] <<= 1; + } + } + + /* if P-bit is shared */ + if (mode == 1) { + i = bcdec__bitstream_read_bit(&bstream); + j = bcdec__bitstream_read_bit(&bstream); + + /* rgb component-wise insert pbits */ + for (k = 0; k < 3; ++k) { + endpoints[0][k] |= i; + endpoints[1][k] |= i; + endpoints[2][k] |= j; + endpoints[3][k] |= j; + } + } else if (sModeHasPBits & (1 << mode)) { + /* unique P-bit per endpoint */ + for (i = 0; i < numEndpoints; ++i) { + j = bcdec__bitstream_read_bit(&bstream); + for (k = 0; k < 4; ++k) { + endpoints[i][k] |= j; + } + } + } + } + + for (i = 0; i < numEndpoints; ++i) { + /* get color components precision including pbit */ + j = actual_bits_count[0][mode] + ((sModeHasPBits >> mode) & 1); + + for (k = 0; k < 3; ++k) { + /* left shift endpoint components so that their MSB lies in bit 7 */ + endpoints[i][k] = endpoints[i][k] << (8 - j); + /* Replicate each component's MSB into the LSBs revealed by the left-shift operation above */ + endpoints[i][k] = endpoints[i][k] | (endpoints[i][k] >> j); + } + + /* get alpha component precision including pbit */ + j = actual_bits_count[1][mode] + ((sModeHasPBits >> mode) & 1); + + /* left shift endpoint components so that their MSB lies in bit 7 */ + endpoints[i][3] = endpoints[i][3] << (8 - j); + /* Replicate each component's MSB into the LSBs revealed by the left-shift operation above */ + endpoints[i][3] = endpoints[i][3] | (endpoints[i][3] >> j); + } + + /* If this mode does not explicitly define the alpha component */ + /* set alpha equal to 1.0 */ + if (!actual_bits_count[1][mode]) { + for (j = 0; j < numEndpoints; ++j) { + endpoints[j][3] = 0xFF; + } + } + + /* Determine weights tables */ + indexBits = (mode == 0 || mode == 1) ? 3 : ((mode == 6) ? 4 : 2); + indexBits2 = (mode == 4) ? 3 : ((mode == 5) ? 2 : 0); + weights = (indexBits == 2) ? aWeight2 : ((indexBits == 3) ? aWeight3 : aWeight4); + weights2 = (indexBits2 == 2) ? aWeight2 : aWeight3; + + /* Quite inconvenient that indices aren't interleaved so we have to make 2 passes here */ + /* Pass #1: collecting color indices */ + for (i = 0; i < 4; ++i) { + for (j = 0; j < 4; ++j) { + partitionSet = (numPartitions == 1) ? ((i | j) ? 0 : 128) : partition_sets[numPartitions - 2][partition][i][j]; + + indexBits = (mode == 0 || mode == 1) ? 3 : ((mode == 6) ? 4 : 2); + /* fix-up index is specified with one less bit */ + /* The fix-up index for subset 0 is always index 0 */ + if (partitionSet & 0x80) { + indexBits--; + } + + indices[i][j] = bcdec__bitstream_read_bits(&bstream, indexBits); + } + } + + /* Pass #2: reading alpha indices (if any) and interpolating & rotating */ + for (i = 0; i < 4; ++i) { + for (j = 0; j < 4; ++j) { + partitionSet = (numPartitions == 1) ? ((i|j) ? 0 : 128) : partition_sets[numPartitions - 2][partition][i][j]; + partitionSet &= 0x03; + + index = indices[i][j]; + + if (!indexBits2) { + r = bcdec__interpolate(endpoints[partitionSet * 2][0], endpoints[partitionSet * 2 + 1][0], weights, index); + g = bcdec__interpolate(endpoints[partitionSet * 2][1], endpoints[partitionSet * 2 + 1][1], weights, index); + b = bcdec__interpolate(endpoints[partitionSet * 2][2], endpoints[partitionSet * 2 + 1][2], weights, index); + a = bcdec__interpolate(endpoints[partitionSet * 2][3], endpoints[partitionSet * 2 + 1][3], weights, index); + } else { + index2 = bcdec__bitstream_read_bits(&bstream, (i|j) ? indexBits2 : (indexBits2 - 1)); + /* The index value for interpolating color comes from the secondary index bits for the texel + if the mode has an index selection bit and its value is one, and from the primary index bits otherwise. + The alpha index comes from the secondary index bits if the block has a secondary index and + the block either doesn’t have an index selection bit or that bit is zero, and from the primary index bits otherwise. */ + if (!indexSelectionBit) { + r = bcdec__interpolate(endpoints[partitionSet * 2][0], endpoints[partitionSet * 2 + 1][0], weights, index); + g = bcdec__interpolate(endpoints[partitionSet * 2][1], endpoints[partitionSet * 2 + 1][1], weights, index); + b = bcdec__interpolate(endpoints[partitionSet * 2][2], endpoints[partitionSet * 2 + 1][2], weights, index); + a = bcdec__interpolate(endpoints[partitionSet * 2][3], endpoints[partitionSet * 2 + 1][3], weights2, index2); + } else { + r = bcdec__interpolate(endpoints[partitionSet * 2][0], endpoints[partitionSet * 2 + 1][0], weights2, index2); + g = bcdec__interpolate(endpoints[partitionSet * 2][1], endpoints[partitionSet * 2 + 1][1], weights2, index2); + b = bcdec__interpolate(endpoints[partitionSet * 2][2], endpoints[partitionSet * 2 + 1][2], weights2, index2); + a = bcdec__interpolate(endpoints[partitionSet * 2][3], endpoints[partitionSet * 2 + 1][3], weights, index); + } + } + + switch (rotation) { + case 1: { /* 01 – Block format is Scalar(R) Vector(AGB) - swap A and R */ + bcdec__swap_values(&a, &r); + } break; + case 2: { /* 10 – Block format is Scalar(G) Vector(RAB) - swap A and G */ + bcdec__swap_values(&a, &g); + } break; + case 3: { /* 11 - Block format is Scalar(B) Vector(RGA) - swap A and B */ + bcdec__swap_values(&a, &b); + } break; + } + + decompressed[j * 4 + 0] = r; + decompressed[j * 4 + 1] = g; + decompressed[j * 4 + 2] = b; + decompressed[j * 4 + 3] = a; + } + + decompressed += destinationPitch; + } +} + +#endif /* BCDEC_IMPLEMENTATION */ + +/* LICENSE: + +This software is available under 2 licenses -- choose whichever you prefer. + +------------------------------------------------------------------------------ +ALTERNATIVE A - MIT License + +Copyright (c) 2022 Sergii Kudlai + +Permission is hereby granted, free of charge, to any person obtaining a copy of +this software and associated documentation files (the "Software"), to deal in +the Software without restriction, including without limitation the rights to +use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies +of the Software, and to permit persons to whom the Software is furnished to do +so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. + +------------------------------------------------------------------------------ +ALTERNATIVE B - The Unlicense + +This is free and unencumbered software released into the public domain. + +Anyone is free to copy, modify, publish, use, compile, sell, or +distribute this software, either in source code form or as a compiled +binary, for any purpose, commercial or non-commercial, and by any +means. + +In jurisdictions that recognize copyright laws, the author or authors +of this software dedicate any and all copyright interest in the +software to the public domain. We make this dedication for the benefit +of the public at large and to the detriment of our heirs and +successors. We intend this dedication to be an overt act of +relinquishment in perpetuity of all present and future rights to this +software under copyright law. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. +IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR +OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, +ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR +OTHER DEALINGS IN THE SOFTWARE. + +For more information, please refer to https://unlicense.org + +*/ diff --git a/dlls/d3dx9_36/surface.c b/dlls/d3dx9_36/surface.c index 7ead6ae3e78..70ee7bdbd01 100644 --- a/dlls/d3dx9_36/surface.c +++ b/dlls/d3dx9_36/surface.c @@ -25,6 +25,8 @@ #include "ole2.h" #include "wincodec.h"
+#define BCDEC_IMPLEMENTATION +#include "bcdec.h" #include "txc_dxtn.h" #include <assert.h>
@@ -2697,32 +2699,100 @@ static void point_filter_argb_pixels(const BYTE *src, UINT src_row_pitch, UINT s } }
+struct d3dx_bcn_decompression_context +{ + void (*decompress_bcn_block)(const void *, void *, int); + const struct pixel_format_desc *compressed_format_desc; + struct d3dx_pixels *compressed_pixels; + + const struct pixel_format_desc *decompressed_format_desc; + uint8_t cur_block_decompressed[64]; + uint32_t cur_block_row_pitch; + int cur_block_x; + int cur_block_y; + int cur_block_z; +}; + +static void d3dx_init_bcn_decompression_context(struct d3dx_bcn_decompression_context *context, + struct d3dx_pixels *pixels, const struct pixel_format_desc *desc, const struct pixel_format_desc *dst_desc) +{ + memset(context, 0, sizeof(*context)); + switch (desc->format) + { + case D3DX_PIXEL_FORMAT_DXT1_UNORM: + context->decompress_bcn_block = bcdec_bc1; + break; + + case D3DX_PIXEL_FORMAT_DXT2_UNORM: + case D3DX_PIXEL_FORMAT_DXT3_UNORM: + context->decompress_bcn_block = bcdec_bc2; + break; + + case D3DX_PIXEL_FORMAT_DXT4_UNORM: + case D3DX_PIXEL_FORMAT_DXT5_UNORM: + context->decompress_bcn_block = bcdec_bc3; + break; + + default: + assert(0); + break; + } + + context->compressed_format_desc = desc; + context->compressed_pixels = pixels; + + context->decompressed_format_desc = dst_desc; + context->cur_block_row_pitch = dst_desc->bytes_per_pixel * desc->block_width; + context->cur_block_x = context->cur_block_y = context->cur_block_z = -1; +} + +static void d3dx_fetch_bcn_texel(struct d3dx_bcn_decompression_context *context, int x, int y, int z, void *texel) +{ + const struct pixel_format_desc *decomp_fmt_desc = context->decompressed_format_desc; + const struct pixel_format_desc *comp_fmt_desc = context->compressed_format_desc; + const int y_aligned = (y & ~(comp_fmt_desc->block_height - 1)); + const int x_aligned = (x & ~(comp_fmt_desc->block_width - 1)); + uint32_t pixel_offset; + + /* Check if we can't re-use the currently decompressed block. */ + if (z != context->cur_block_z || (x_aligned != context->cur_block_x) || (y_aligned != context->cur_block_y)) + { + const BYTE *block_ptr = context->compressed_pixels->data; + + block_ptr += z * context->compressed_pixels->slice_pitch; + block_ptr += (y / comp_fmt_desc->block_height) * context->compressed_pixels->row_pitch; + block_ptr += (x / comp_fmt_desc->block_width) * comp_fmt_desc->block_byte_count; + context->decompress_bcn_block(block_ptr, context->cur_block_decompressed, context->cur_block_row_pitch); + context->cur_block_x = x_aligned; + context->cur_block_y = y_aligned; + context->cur_block_z = z; + } + + pixel_offset = (y & (comp_fmt_desc->block_height - 1)) * context->cur_block_row_pitch; + pixel_offset += (x & (comp_fmt_desc->block_width - 1)) * decomp_fmt_desc->bytes_per_pixel; + memcpy(texel, context->cur_block_decompressed + pixel_offset, decomp_fmt_desc->bytes_per_pixel); +} + static HRESULT d3dx_pixels_decompress(struct d3dx_pixels *pixels, const struct pixel_format_desc *desc, BOOL is_dst, void **out_memory, uint32_t *out_row_pitch, uint32_t *out_slice_pitch, const struct pixel_format_desc **out_desc) { - void (*fetch_dxt_texel)(int srcRowStride, const BYTE *pixdata, int i, int j, void *texel); - uint32_t x, y, z, tmp_pitch, uncompressed_slice_pitch, uncompressed_row_pitch; + uint32_t x, y, z, uncompressed_slice_pitch, uncompressed_row_pitch; const struct pixel_format_desc *uncompressed_desc = NULL; + struct d3dx_bcn_decompression_context context; const struct volume *size = &pixels->size; BYTE *uncompressed_mem;
switch (desc->format) { case D3DX_PIXEL_FORMAT_DXT1_UNORM: - uncompressed_desc = get_format_info(D3DFMT_A8B8G8R8); - fetch_dxt_texel = fetch_2d_texel_rgba_dxt1; - break; case D3DX_PIXEL_FORMAT_DXT2_UNORM: case D3DX_PIXEL_FORMAT_DXT3_UNORM: - uncompressed_desc = get_format_info(D3DFMT_A8B8G8R8); - fetch_dxt_texel = fetch_2d_texel_rgba_dxt3; - break; case D3DX_PIXEL_FORMAT_DXT4_UNORM: case D3DX_PIXEL_FORMAT_DXT5_UNORM: - uncompressed_desc = get_format_info(D3DFMT_A8B8G8R8); - fetch_dxt_texel = fetch_2d_texel_rgba_dxt5; + uncompressed_desc = get_d3dx_pixel_format_info(D3DX_PIXEL_FORMAT_R8G8B8A8_UNORM); break; + default: FIXME("Unexpected compressed texture format %u.\n", desc->format); return E_NOTIMPL; @@ -2752,11 +2822,9 @@ static HRESULT d3dx_pixels_decompress(struct d3dx_pixels *pixels, const struct p }
TRACE("Decompressing pixels.\n"); - tmp_pitch = pixels->row_pitch * desc->block_width / desc->block_byte_count; + d3dx_init_bcn_decompression_context(&context, pixels, desc, uncompressed_desc); for (z = 0; z < size->depth; ++z) { - const BYTE *slice_data = ((BYTE *)pixels->data) + (pixels->slice_pitch * z); - for (y = 0; y < size->height; ++y) { BYTE *ptr = &uncompressed_mem[(z * uncompressed_slice_pitch) + (y * uncompressed_row_pitch)]; @@ -2765,10 +2833,9 @@ static HRESULT d3dx_pixels_decompress(struct d3dx_pixels *pixels, const struct p const POINT pt = { x, y };
if (!is_dst) - fetch_dxt_texel(tmp_pitch, slice_data, x + pixels->unaligned_rect.left, - y + pixels->unaligned_rect.top, ptr); + d3dx_fetch_bcn_texel(&context, x + pixels->unaligned_rect.left, y + pixels->unaligned_rect.top, z, ptr); else if (!PtInRect(&pixels->unaligned_rect, pt)) - fetch_dxt_texel(tmp_pitch, slice_data, x, y, ptr); + d3dx_fetch_bcn_texel(&context, x, y, z, ptr); ptr += uncompressed_desc->bytes_per_pixel; } } diff --git a/dlls/d3dx9_36/txc_dxtn.h b/dlls/d3dx9_36/txc_dxtn.h index 3c1e3d46c28..9bd59037a4b 100644 --- a/dlls/d3dx9_36/txc_dxtn.h +++ b/dlls/d3dx9_36/txc_dxtn.h @@ -36,15 +36,6 @@ typedef GLubyte GLchan; #define BCOMP 2 #define ACOMP 3
-void fetch_2d_texel_rgb_dxt1(GLint srcRowStride, const GLubyte *pixdata, - GLint i, GLint j, GLvoid *texel); -void fetch_2d_texel_rgba_dxt1(GLint srcRowStride, const GLubyte *pixdata, - GLint i, GLint j, GLvoid *texel); -void fetch_2d_texel_rgba_dxt3(GLint srcRowStride, const GLubyte *pixdata, - GLint i, GLint j, GLvoid *texel); -void fetch_2d_texel_rgba_dxt5(GLint srcRowStride, const GLubyte *pixdata, - GLint i, GLint j, GLvoid *texel); - void tx_compress_dxtn(GLint srccomps, GLint width, GLint height, const GLubyte *srcPixData, GLenum destformat, GLubyte *dest, GLint dstRowStride); diff --git a/dlls/d3dx9_36/txc_fetch_dxtn.c b/dlls/d3dx9_36/txc_fetch_dxtn.c deleted file mode 100644 index 7f0db56a155..00000000000 --- a/dlls/d3dx9_36/txc_fetch_dxtn.c +++ /dev/null @@ -1,243 +0,0 @@ -/* - * libtxc_dxtn - * Version: 1.0 - * - * Copyright (C) 2004 Roland Scheidegger All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included - * in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS - * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN - * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - */ - -#include <stdio.h> -#include "txc_dxtn.h" - -#define EXP5TO8R(packedcol) \ - ((((packedcol) >> 8) & 0xf8) | (((packedcol) >> 13) & 0x7)) - -#define EXP6TO8G(packedcol) \ - ((((packedcol) >> 3) & 0xfc) | (((packedcol) >> 9) & 0x3)) - -#define EXP5TO8B(packedcol) \ - ((((packedcol) << 3) & 0xf8) | (((packedcol) >> 2) & 0x7)) - -#define EXP4TO8(col) \ - ((col) | ((col) << 4)) - -/* inefficient. To be efficient, it would be necessary to decode 16 pixels at once */ - -static void dxt135_decode_imageblock ( const GLubyte *img_block_src, - GLint i, GLint j, GLuint dxt_type, GLvoid *texel ) { - GLchan *rgba = (GLchan *) texel; - const GLushort color0 = img_block_src[0] | (img_block_src[1] << 8); - const GLushort color1 = img_block_src[2] | (img_block_src[3] << 8); - const GLuint bits = img_block_src[4] | (img_block_src[5] << 8) | - (img_block_src[6] << 16) | (img_block_src[7] << 24); - /* What about big/little endian? */ - GLubyte bit_pos = 2 * (j * 4 + i) ; - GLubyte code = (GLubyte) ((bits >> bit_pos) & 3); - - rgba[ACOMP] = CHAN_MAX; - switch (code) { - case 0: - rgba[RCOMP] = UBYTE_TO_CHAN( EXP5TO8R(color0) ); - rgba[GCOMP] = UBYTE_TO_CHAN( EXP6TO8G(color0) ); - rgba[BCOMP] = UBYTE_TO_CHAN( EXP5TO8B(color0) ); - break; - case 1: - rgba[RCOMP] = UBYTE_TO_CHAN( EXP5TO8R(color1) ); - rgba[GCOMP] = UBYTE_TO_CHAN( EXP6TO8G(color1) ); - rgba[BCOMP] = UBYTE_TO_CHAN( EXP5TO8B(color1) ); - break; - case 2: - if ((dxt_type > 1) || (color0 > color1)) { - rgba[RCOMP] = UBYTE_TO_CHAN( ((EXP5TO8R(color0) * 2 + EXP5TO8R(color1)) / 3) ); - rgba[GCOMP] = UBYTE_TO_CHAN( ((EXP6TO8G(color0) * 2 + EXP6TO8G(color1)) / 3) ); - rgba[BCOMP] = UBYTE_TO_CHAN( ((EXP5TO8B(color0) * 2 + EXP5TO8B(color1)) / 3) ); - } - else { - rgba[RCOMP] = UBYTE_TO_CHAN( ((EXP5TO8R(color0) + EXP5TO8R(color1)) / 2) ); - rgba[GCOMP] = UBYTE_TO_CHAN( ((EXP6TO8G(color0) + EXP6TO8G(color1)) / 2) ); - rgba[BCOMP] = UBYTE_TO_CHAN( ((EXP5TO8B(color0) + EXP5TO8B(color1)) / 2) ); - } - break; - case 3: - if ((dxt_type > 1) || (color0 > color1)) { - rgba[RCOMP] = UBYTE_TO_CHAN( ((EXP5TO8R(color0) + EXP5TO8R(color1) * 2) / 3) ); - rgba[GCOMP] = UBYTE_TO_CHAN( ((EXP6TO8G(color0) + EXP6TO8G(color1) * 2) / 3) ); - rgba[BCOMP] = UBYTE_TO_CHAN( ((EXP5TO8B(color0) + EXP5TO8B(color1) * 2) / 3) ); - } - else { - rgba[RCOMP] = 0; - rgba[GCOMP] = 0; - rgba[BCOMP] = 0; - if (dxt_type == 1) rgba[ACOMP] = UBYTE_TO_CHAN(0); - } - break; - default: - /* CANNOT happen (I hope) */ - break; - } -} - - -void fetch_2d_texel_rgb_dxt1(GLint srcRowStride, const GLubyte *pixdata, - GLint i, GLint j, GLvoid *texel) -{ - /* Extract the (i,j) pixel from pixdata and return it - * in texel[RCOMP], texel[GCOMP], texel[BCOMP], texel[ACOMP]. - */ - - const GLubyte *blksrc = (pixdata + ((srcRowStride + 3) / 4 * (j / 4) + (i / 4)) * 8); - dxt135_decode_imageblock(blksrc, (i&3), (j&3), 0, texel); -} - - -void fetch_2d_texel_rgba_dxt1(GLint srcRowStride, const GLubyte *pixdata, - GLint i, GLint j, GLvoid *texel) -{ - /* Extract the (i,j) pixel from pixdata and return it - * in texel[RCOMP], texel[GCOMP], texel[BCOMP], texel[ACOMP]. - */ - - const GLubyte *blksrc = (pixdata + ((srcRowStride + 3) / 4 * (j / 4) + (i / 4)) * 8); - dxt135_decode_imageblock(blksrc, (i&3), (j&3), 1, texel); -} - -void fetch_2d_texel_rgba_dxt3(GLint srcRowStride, const GLubyte *pixdata, - GLint i, GLint j, GLvoid *texel) { - - /* Extract the (i,j) pixel from pixdata and return it - * in texel[RCOMP], texel[GCOMP], texel[BCOMP], texel[ACOMP]. - */ - - GLchan *rgba = (GLchan *) texel; - const GLubyte *blksrc = (pixdata + ((srcRowStride + 3) / 4 * (j / 4) + (i / 4)) * 16); -#if 0 - /* Simple 32bit version. */ -/* that's pretty brain-dead for a single pixel, isn't it? */ - const GLubyte bit_pos = 4 * ((j&3) * 4 + (i&3)); - const GLuint alpha_low = blksrc[0] | (blksrc[1] << 8) | (blksrc[2] << 16) | (blksrc[3] << 24); - const GLuint alpha_high = blksrc[4] | (blksrc[5] << 8) | (blksrc[6] << 16) | (blksrc[7] << 24); - - dxt135_decode_imageblock(blksrc + 8, (i&3), (j&3), 2, texel); - if (bit_pos < 32) - rgba[ACOMP] = UBYTE_TO_CHAN( (GLubyte)(EXP4TO8((alpha_low >> bit_pos) & 15)) ); - else - rgba[ACOMP] = UBYTE_TO_CHAN( (GLubyte)(EXP4TO8((alpha_high >> (bit_pos - 32)) & 15)) ); -#endif -#if 1 -/* TODO test this! */ - const GLubyte anibble = (blksrc[((j&3) * 4 + (i&3)) / 2] >> (4 * (i&1))) & 0xf; - dxt135_decode_imageblock(blksrc + 8, (i&3), (j&3), 2, texel); - rgba[ACOMP] = UBYTE_TO_CHAN( (GLubyte)(EXP4TO8(anibble)) ); -#endif - -} - -void fetch_2d_texel_rgba_dxt5(GLint srcRowStride, const GLubyte *pixdata, - GLint i, GLint j, GLvoid *texel) { - - /* Extract the (i,j) pixel from pixdata and return it - * in texel[RCOMP], texel[GCOMP], texel[BCOMP], texel[ACOMP]. - */ - - GLchan *rgba = (GLchan *) texel; - const GLubyte *blksrc = (pixdata + ((srcRowStride + 3) / 4 * (j / 4) + (i / 4)) * 16); - const GLubyte alpha0 = blksrc[0]; - const GLubyte alpha1 = blksrc[1]; -#if 0 - const GLubyte bit_pos = 3 * ((j&3) * 4 + (i&3)); - /* simple 32bit version */ - const GLuint bits_low = blksrc[2] | (blksrc[3] << 8) | (blksrc[4] << 16) | (blksrc[5] << 24); - const GLuint bits_high = blksrc[6] | (blksrc[7] << 8); - GLubyte code; - - if (bit_pos < 30) - code = (GLubyte) ((bits_low >> bit_pos) & 7); - else if (bit_pos == 30) - code = (GLubyte) ((bits_low >> 30) & 3) | ((bits_high << 2) & 4); - else - code = (GLubyte) ((bits_high >> (bit_pos - 32)) & 7); -#endif -#if 1 -/* TODO test this! */ - const GLubyte bit_pos = ((j&3) * 4 + (i&3)) * 3; - const GLubyte acodelow = blksrc[2 + bit_pos / 8]; - const GLubyte acodehigh = blksrc[3 + bit_pos / 8]; - const GLubyte code = (acodelow >> (bit_pos & 0x7) | - (acodehigh << (8 - (bit_pos & 0x7)))) & 0x7; -#endif - dxt135_decode_imageblock(blksrc + 8, (i&3), (j&3), 2, texel); -#if 0 - if (alpha0 > alpha1) { - switch (code) { - case 0: - rgba[ACOMP] = UBYTE_TO_CHAN( alpha0 ); - break; - case 1: - rgba[ACOMP] = UBYTE_TO_CHAN( alpha1 ); - break; - case 2: - case 3: - case 4: - case 5: - case 6: - case 7: - rgba[ACOMP] = UBYTE_TO_CHAN( ((alpha0 * (8 - code) + (alpha1 * (code - 1))) / 7) ); - break; - } - } - else { - switch (code) { - case 0: - rgba[ACOMP] = UBYTE_TO_CHAN( alpha0 ); - break; - case 1: - rgba[ACOMP] = UBYTE_TO_CHAN( alpha1 ); - break; - case 2: - case 3: - case 4: - case 5: - rgba[ACOMP] = UBYTE_TO_CHAN( ((alpha0 * (6 - code) + (alpha1 * (code - 1))) / 5) ); - break; - case 6: - rgba[ACOMP] = 0; - break; - case 7: - rgba[ACOMP] = CHAN_MAX; - break; - } - } -#endif -/* not sure. Which version is faster? */ -#if 1 -/* TODO test this */ - if (code == 0) - rgba[ACOMP] = UBYTE_TO_CHAN( alpha0 ); - else if (code == 1) - rgba[ACOMP] = UBYTE_TO_CHAN( alpha1 ); - else if (alpha0 > alpha1) - rgba[ACOMP] = UBYTE_TO_CHAN( ((alpha0 * (8 - code) + (alpha1 * (code - 1))) / 7) ); - else if (code < 6) - rgba[ACOMP] = UBYTE_TO_CHAN( ((alpha0 * (6 - code) + (alpha1 * (code - 1))) / 5) ); - else if (code == 6) - rgba[ACOMP] = 0; - else - rgba[ACOMP] = CHAN_MAX; -#endif -} diff --git a/dlls/d3dx9_37/Makefile.in b/dlls/d3dx9_37/Makefile.in index b61c8ceddf5..88bc6e43589 100644 --- a/dlls/d3dx9_37/Makefile.in +++ b/dlls/d3dx9_37/Makefile.in @@ -23,7 +23,6 @@ SOURCES = \ surface.c \ texture.c \ txc_compress_dxtn.c \ - txc_fetch_dxtn.c \ util.c \ version.rc \ volume.c \ diff --git a/dlls/d3dx9_38/Makefile.in b/dlls/d3dx9_38/Makefile.in index 4d9a11580bc..56cc69cf193 100644 --- a/dlls/d3dx9_38/Makefile.in +++ b/dlls/d3dx9_38/Makefile.in @@ -23,7 +23,6 @@ SOURCES = \ surface.c \ texture.c \ txc_compress_dxtn.c \ - txc_fetch_dxtn.c \ util.c \ version.rc \ volume.c \ diff --git a/dlls/d3dx9_39/Makefile.in b/dlls/d3dx9_39/Makefile.in index 6ff59e7b98e..b0b539fccf7 100644 --- a/dlls/d3dx9_39/Makefile.in +++ b/dlls/d3dx9_39/Makefile.in @@ -23,7 +23,6 @@ SOURCES = \ surface.c \ texture.c \ txc_compress_dxtn.c \ - txc_fetch_dxtn.c \ util.c \ version.rc \ volume.c \ diff --git a/dlls/d3dx9_40/Makefile.in b/dlls/d3dx9_40/Makefile.in index ae63a814403..0c23fced19e 100644 --- a/dlls/d3dx9_40/Makefile.in +++ b/dlls/d3dx9_40/Makefile.in @@ -23,7 +23,6 @@ SOURCES = \ surface.c \ texture.c \ txc_compress_dxtn.c \ - txc_fetch_dxtn.c \ util.c \ version.rc \ volume.c \ diff --git a/dlls/d3dx9_41/Makefile.in b/dlls/d3dx9_41/Makefile.in index 9fdc2884e1b..994f8e2e385 100644 --- a/dlls/d3dx9_41/Makefile.in +++ b/dlls/d3dx9_41/Makefile.in @@ -23,7 +23,6 @@ SOURCES = \ surface.c \ texture.c \ txc_compress_dxtn.c \ - txc_fetch_dxtn.c \ util.c \ version.rc \ volume.c \ diff --git a/dlls/d3dx9_42/Makefile.in b/dlls/d3dx9_42/Makefile.in index 0e2bf79aeff..a96721a35b0 100644 --- a/dlls/d3dx9_42/Makefile.in +++ b/dlls/d3dx9_42/Makefile.in @@ -24,7 +24,6 @@ SOURCES = \ surface.c \ texture.c \ txc_compress_dxtn.c \ - txc_fetch_dxtn.c \ util.c \ version.rc \ volume.c \ diff --git a/dlls/d3dx9_43/Makefile.in b/dlls/d3dx9_43/Makefile.in index 0ba2e5e8fe0..27122d33617 100644 --- a/dlls/d3dx9_43/Makefile.in +++ b/dlls/d3dx9_43/Makefile.in @@ -24,7 +24,6 @@ SOURCES = \ surface.c \ texture.c \ txc_compress_dxtn.c \ - txc_fetch_dxtn.c \ util.c \ version.rc \ volume.c \