diff options
Diffstat (limited to 'source/blender/imbuf/intern/dds/BlockDXT.cpp')
| -rw-r--r-- | source/blender/imbuf/intern/dds/BlockDXT.cpp | 204 |
1 files changed, 102 insertions, 102 deletions
diff --git a/source/blender/imbuf/intern/dds/BlockDXT.cpp b/source/blender/imbuf/intern/dds/BlockDXT.cpp index 1fbe7b46963..2d9c300a147 100644 --- a/source/blender/imbuf/intern/dds/BlockDXT.cpp +++ b/source/blender/imbuf/intern/dds/BlockDXT.cpp @@ -25,28 +25,28 @@ * Original license from NVIDIA follows. */ -// Copyright NVIDIA Corporation 2007 -- Ignacio Castano <icastano@nvidia.com> -// -// 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. +/* Copyright NVIDIA Corporation 2007 -- Ignacio Castano <icastano@nvidia.com> + * + * 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. */ #include <BlockDXT.h> #include <ColorBlock.h> @@ -59,32 +59,32 @@ uint BlockDXT1::evaluatePalette(Color32 color_array[4]) const { - // Does bit expansion before interpolation. + /* Does bit expansion before interpolation. */ color_array[0].b = (col0.b << 3) | (col0.b >> 2); color_array[0].g = (col0.g << 2) | (col0.g >> 4); color_array[0].r = (col0.r << 3) | (col0.r >> 2); color_array[0].a = 0xFF; - // @@ Same as above, but faster? - // Color32 c; - // c.u = ((col0.u << 3) & 0xf8) | ((col0.u << 5) & 0xfc00) | ((col0.u << 8) & 0xf80000); - // c.u |= (c.u >> 5) & 0x070007; - // c.u |= (c.u >> 6) & 0x000300; - // color_array[0].u = c.u; + /* @@ Same as above, but faster? + * Color32 c; + * c.u = ((col0.u << 3) & 0xf8) | ((col0.u << 5) & 0xfc00) | ((col0.u << 8) & 0xf80000); + * c.u |= (c.u >> 5) & 0x070007; + * c.u |= (c.u >> 6) & 0x000300; + * color_array[0].u = c.u; */ color_array[1].r = (col1.r << 3) | (col1.r >> 2); color_array[1].g = (col1.g << 2) | (col1.g >> 4); color_array[1].b = (col1.b << 3) | (col1.b >> 2); color_array[1].a = 0xFF; - // @@ Same as above, but faster? - // c.u = ((col1.u << 3) & 0xf8) | ((col1.u << 5) & 0xfc00) | ((col1.u << 8) & 0xf80000); - // c.u |= (c.u >> 5) & 0x070007; - // c.u |= (c.u >> 6) & 0x000300; - // color_array[1].u = c.u; + /* @@ Same as above, but faster? + * c.u = ((col1.u << 3) & 0xf8) | ((col1.u << 5) & 0xfc00) | ((col1.u << 8) & 0xf80000); + * c.u |= (c.u >> 5) & 0x070007; + * c.u |= (c.u >> 6) & 0x000300; + * color_array[1].u = c.u; */ if (col0.u > col1.u) { - // Four-color block: derive the other two colors. + /* Four-color block: derive the other two colors. */ color_array[2].r = (2 * color_array[0].r + color_array[1].r) / 3; color_array[2].g = (2 * color_array[0].g + color_array[1].g) / 3; color_array[2].b = (2 * color_array[0].b + color_array[1].b) / 3; @@ -98,16 +98,16 @@ uint BlockDXT1::evaluatePalette(Color32 color_array[4]) const return 4; } - // Three-color block: derive the other color. + /* Three-color block: derive the other color. */ color_array[2].r = (color_array[0].r + color_array[1].r) / 2; color_array[2].g = (color_array[0].g + color_array[1].g) / 2; color_array[2].b = (color_array[0].b + color_array[1].b) / 2; color_array[2].a = 0xFF; - // Set all components to 0 to match DXT specs. - color_array[3].r = 0x00; // color_array[2].r; - color_array[3].g = 0x00; // color_array[2].g; - color_array[3].b = 0x00; // color_array[2].b; + /* Set all components to 0 to match DXT specs. */ + color_array[3].r = 0x00; /* color_array[2].r; */ + color_array[3].g = 0x00; /* color_array[2].g; */ + color_array[3].b = 0x00; /* color_array[2].b; */ color_array[3].a = 0x00; return 3; @@ -115,7 +115,7 @@ uint BlockDXT1::evaluatePalette(Color32 color_array[4]) const uint BlockDXT1::evaluatePaletteNV5x(Color32 color_array[4]) const { - // Does bit expansion before interpolation. + /* Does bit expansion before interpolation. */ color_array[0].b = (3 * col0.b * 22) / 8; color_array[0].g = (col0.g << 2) | (col0.g >> 4); color_array[0].r = (3 * col0.r * 22) / 8; @@ -129,7 +129,7 @@ uint BlockDXT1::evaluatePaletteNV5x(Color32 color_array[4]) const int gdiff = color_array[1].g - color_array[0].g; if (col0.u > col1.u) { - // Four-color block: derive the other two colors. + /* Four-color block: derive the other two colors. */ color_array[2].r = ((2 * col0.r + col1.r) * 22) / 8; color_array[2].g = (256 * color_array[0].g + gdiff / 4 + 128 + gdiff * 80) / 256; color_array[2].b = ((2 * col0.b + col1.b) * 22) / 8; @@ -143,22 +143,22 @@ uint BlockDXT1::evaluatePaletteNV5x(Color32 color_array[4]) const return 4; } - // Three-color block: derive the other color. + /* Three-color block: derive the other color. */ color_array[2].r = ((col0.r + col1.r) * 33) / 8; color_array[2].g = (256 * color_array[0].g + gdiff / 4 + 128 + gdiff * 128) / 256; color_array[2].b = ((col0.b + col1.b) * 33) / 8; color_array[2].a = 0xFF; - // Set all components to 0 to match DXT specs. - color_array[3].r = 0x00; // color_array[2].r; - color_array[3].g = 0x00; // color_array[2].g; - color_array[3].b = 0x00; // color_array[2].b; + /* Set all components to 0 to match DXT specs. */ + color_array[3].r = 0x00; /* color_array[2].r; */ + color_array[3].g = 0x00; /* color_array[2].g; */ + color_array[3].b = 0x00; /* color_array[2].b; */ color_array[3].a = 0x00; return 3; } -// Evaluate palette assuming 3 color block. +/* Evaluate palette assuming 3 color block. */ void BlockDXT1::evaluatePalette3(Color32 color_array[4]) const { color_array[0].b = (col0.b << 3) | (col0.b >> 2); @@ -171,20 +171,20 @@ void BlockDXT1::evaluatePalette3(Color32 color_array[4]) const color_array[1].b = (col1.b << 3) | (col1.b >> 2); color_array[1].a = 0xFF; - // Three-color block: derive the other color. + /* Three-color block: derive the other color. */ color_array[2].r = (color_array[0].r + color_array[1].r) / 2; color_array[2].g = (color_array[0].g + color_array[1].g) / 2; color_array[2].b = (color_array[0].b + color_array[1].b) / 2; color_array[2].a = 0xFF; - // Set all components to 0 to match DXT specs. - color_array[3].r = 0x00; // color_array[2].r; - color_array[3].g = 0x00; // color_array[2].g; - color_array[3].b = 0x00; // color_array[2].b; + /* Set all components to 0 to match DXT specs. */ + color_array[3].r = 0x00; /* color_array[2].r; */ + color_array[3].g = 0x00; /* color_array[2].g; */ + color_array[3].b = 0x00; /* color_array[2].b; */ color_array[3].a = 0x00; } -// Evaluate palette assuming 4 color block. +/* Evaluate palette assuming 4 color block. */ void BlockDXT1::evaluatePalette4(Color32 color_array[4]) const { color_array[0].b = (col0.b << 3) | (col0.b >> 2); @@ -197,7 +197,7 @@ void BlockDXT1::evaluatePalette4(Color32 color_array[4]) const color_array[1].b = (col1.b << 3) | (col1.b >> 2); color_array[1].a = 0xFF; - // Four-color block: derive the other two colors. + /* Four-color block: derive the other two colors. */ color_array[2].r = (2 * color_array[0].r + color_array[1].r) / 3; color_array[2].g = (2 * color_array[0].g + color_array[1].g) / 3; color_array[2].b = (2 * color_array[0].b + color_array[1].b) / 3; @@ -211,11 +211,11 @@ void BlockDXT1::evaluatePalette4(Color32 color_array[4]) const void BlockDXT1::decodeBlock(ColorBlock *block) const { - // Decode color block. + /* Decode color block. */ Color32 color_array[4]; evaluatePalette(color_array); - // Write color block. + /* Write color block. */ for (uint j = 0; j < 4; j++) { for (uint i = 0; i < 4; i++) { uint idx = (row[j] >> (2 * i)) & 3; @@ -226,11 +226,11 @@ void BlockDXT1::decodeBlock(ColorBlock *block) const void BlockDXT1::decodeBlockNV5x(ColorBlock *block) const { - // Decode color block. + /* Decode color block. */ Color32 color_array[4]; evaluatePaletteNV5x(color_array); - // Write color block. + /* Write color block. */ for (uint j = 0; j < 4; j++) { for (uint i = 0; i < 4; i++) { uint idx = (row[j] >> (2 * i)) & 3; @@ -247,14 +247,14 @@ void BlockDXT1::setIndices(const int *idx) } } -/// Flip DXT1 block vertically. +/** Flip DXT1 block vertically. */ inline void BlockDXT1::flip4() { swap(row[0], row[3]); swap(row[1], row[2]); } -/// Flip half DXT1 block vertically. +/** Flip half DXT1 block vertically. */ inline void BlockDXT1::flip2() { swap(row[0], row[1]); @@ -266,10 +266,10 @@ inline void BlockDXT1::flip2() void BlockDXT3::decodeBlock(ColorBlock *block) const { - // Decode color. + /* Decode color. */ color.decodeBlock(block); - // Decode alpha. + /* Decode alpha. */ alpha.decodeBlock(block); } @@ -299,27 +299,27 @@ void AlphaBlockDXT3::decodeBlock(ColorBlock *block) const block->color(0xF).a = (alphaF << 4) | alphaF; } -/// Flip DXT3 alpha block vertically. +/** Flip DXT3 alpha block vertically. */ void AlphaBlockDXT3::flip4() { swap(row[0], row[3]); swap(row[1], row[2]); } -/// Flip half DXT3 alpha block vertically. +/** Flip half DXT3 alpha block vertically. */ void AlphaBlockDXT3::flip2() { swap(row[0], row[1]); } -/// Flip DXT3 block vertically. +/** Flip DXT3 block vertically. */ void BlockDXT3::flip4() { alpha.flip4(); color.flip4(); } -/// Flip half DXT3 block vertically. +/** Flip half DXT3 block vertically. */ void BlockDXT3::flip2() { alpha.flip2(); @@ -342,30 +342,30 @@ void AlphaBlockDXT5::evaluatePalette(uint8 alpha[8]) const void AlphaBlockDXT5::evaluatePalette8(uint8 alpha[8]) const { - // 8-alpha block: derive the other six alphas. - // Bit code 000 = alpha0, 001 = alpha1, others are interpolated. + /* 8-alpha block: derive the other six alphas. + * Bit code 000 = alpha0, 001 = alpha1, others are interpolated. */ alpha[0] = alpha0(); alpha[1] = alpha1(); - alpha[2] = (6 * alpha[0] + 1 * alpha[1]) / 7; // bit code 010 - alpha[3] = (5 * alpha[0] + 2 * alpha[1]) / 7; // bit code 011 - alpha[4] = (4 * alpha[0] + 3 * alpha[1]) / 7; // bit code 100 - alpha[5] = (3 * alpha[0] + 4 * alpha[1]) / 7; // bit code 101 - alpha[6] = (2 * alpha[0] + 5 * alpha[1]) / 7; // bit code 110 - alpha[7] = (1 * alpha[0] + 6 * alpha[1]) / 7; // bit code 111 + alpha[2] = (6 * alpha[0] + 1 * alpha[1]) / 7; /* bit code 010 */ + alpha[3] = (5 * alpha[0] + 2 * alpha[1]) / 7; /* bit code 011 */ + alpha[4] = (4 * alpha[0] + 3 * alpha[1]) / 7; /* bit code 100 */ + alpha[5] = (3 * alpha[0] + 4 * alpha[1]) / 7; /* bit code 101 */ + alpha[6] = (2 * alpha[0] + 5 * alpha[1]) / 7; /* bit code 110 */ + alpha[7] = (1 * alpha[0] + 6 * alpha[1]) / 7; /* bit code 111 */ } void AlphaBlockDXT5::evaluatePalette6(uint8 alpha[8]) const { - // 6-alpha block. - // Bit code 000 = alpha0, 001 = alpha1, others are interpolated. + /* 6-alpha block. + * Bit code 000 = alpha0, 001 = alpha1, others are interpolated. */ alpha[0] = alpha0(); alpha[1] = alpha1(); - alpha[2] = (4 * alpha[0] + 1 * alpha[1]) / 5; // Bit code 010 - alpha[3] = (3 * alpha[0] + 2 * alpha[1]) / 5; // Bit code 011 - alpha[4] = (2 * alpha[0] + 3 * alpha[1]) / 5; // Bit code 100 - alpha[5] = (1 * alpha[0] + 4 * alpha[1]) / 5; // Bit code 101 - alpha[6] = 0x00; // Bit code 110 - alpha[7] = 0xFF; // Bit code 111 + alpha[2] = (4 * alpha[0] + 1 * alpha[1]) / 5; /* Bit code 010 */ + alpha[3] = (3 * alpha[0] + 2 * alpha[1]) / 5; /* Bit code 011 */ + alpha[4] = (2 * alpha[0] + 3 * alpha[1]) / 5; /* Bit code 100 */ + alpha[5] = (1 * alpha[0] + 4 * alpha[1]) / 5; /* Bit code 101 */ + alpha[6] = 0x00; /* Bit code 110 */ + alpha[7] = 0xFF; /* Bit code 111 */ } void AlphaBlockDXT5::indices(uint8 index_array[16]) const @@ -418,7 +418,7 @@ void AlphaBlockDXT5::flip4() { uint64 *b = (uint64 *)this; - // @@ The masks might have to be byte swapped. + /* @@ The masks might have to be byte swapped. */ uint64 tmp = (*b & (uint64)(0x000000000000FFFFLL)); tmp |= (*b & (uint64)(0x000000000FFF0000LL)) << 36; tmp |= (*b & (uint64)(0x000000FFF0000000LL)) << 12; @@ -432,7 +432,7 @@ void AlphaBlockDXT5::flip2() { uint *b = (uint *)this; - // @@ The masks might have to be byte swapped. + /* @@ The masks might have to be byte swapped. */ uint tmp = (*b & 0xFF000000); tmp |= (*b & 0x00000FFF) << 12; tmp |= (*b & 0x00FFF000) >> 12; @@ -442,37 +442,37 @@ void AlphaBlockDXT5::flip2() void BlockDXT5::decodeBlock(ColorBlock *block) const { - // Decode color. + /* Decode color. */ color.decodeBlock(block); - // Decode alpha. + /* Decode alpha. */ alpha.decodeBlock(block); } void BlockDXT5::decodeBlockNV5x(ColorBlock *block) const { - // Decode color. + /* Decode color. */ color.decodeBlockNV5x(block); - // Decode alpha. + /* Decode alpha. */ alpha.decodeBlock(block); } -/// Flip DXT5 block vertically. +/** Flip DXT5 block vertically. */ void BlockDXT5::flip4() { alpha.flip4(); color.flip4(); } -/// Flip half DXT5 block vertically. +/** Flip half DXT5 block vertically. */ void BlockDXT5::flip2() { alpha.flip2(); color.flip2(); } -/// Decode ATI1 block. +/** Decode ATI1 block. */ void BlockATI1::decodeBlock(ColorBlock *block) const { uint8 alpha_array[8]; @@ -488,19 +488,19 @@ void BlockATI1::decodeBlock(ColorBlock *block) const } } -/// Flip ATI1 block vertically. +/** Flip ATI1 block vertically. */ void BlockATI1::flip4() { alpha.flip4(); } -/// Flip half ATI1 block vertically. +/** Flip half ATI1 block vertically. */ void BlockATI1::flip2() { alpha.flip2(); } -/// Decode ATI2 block. +/** Decode ATI2 block. */ void BlockATI2::decodeBlock(ColorBlock *block) const { uint8 alpha_array[8]; @@ -525,14 +525,14 @@ void BlockATI2::decodeBlock(ColorBlock *block) const } } -/// Flip ATI2 block vertically. +/** Flip ATI2 block vertically. */ void BlockATI2::flip4() { x.flip4(); y.flip4(); } -/// Flip half ATI2 block vertically. +/** Flip half ATI2 block vertically. */ void BlockATI2::flip2() { x.flip2(); @@ -541,7 +541,7 @@ void BlockATI2::flip2() void BlockCTX1::evaluatePalette(Color32 color_array[4]) const { - // Does bit expansion before interpolation. + /* Does bit expansion before interpolation. */ color_array[0].b = 0x00; color_array[0].g = col0[1]; color_array[0].r = col0[0]; @@ -565,11 +565,11 @@ void BlockCTX1::evaluatePalette(Color32 color_array[4]) const void BlockCTX1::decodeBlock(ColorBlock *block) const { - // Decode color block. + /* Decode color block. */ Color32 color_array[4]; evaluatePalette(color_array); - // Write color block. + /* Write color block. */ for (uint j = 0; j < 4; j++) { for (uint i = 0; i < 4; i++) { uint idx = (row[j] >> (2 * i)) & 3; @@ -586,14 +586,14 @@ void BlockCTX1::setIndices(const int *idx) } } -/// Flip CTX1 block vertically. +/** Flip CTX1 block vertically. */ inline void BlockCTX1::flip4() { swap(row[0], row[3]); swap(row[1], row[2]); } -/// Flip half CTX1 block vertically. +/** Flip half CTX1 block vertically. */ inline void BlockCTX1::flip2() { swap(row[0], row[1]); |