diff options
Diffstat (limited to 'source/blender/imbuf/intern/dds/BlockDXT.cpp')
| -rw-r--r-- | source/blender/imbuf/intern/dds/BlockDXT.cpp | 80 |
1 files changed, 40 insertions, 40 deletions
diff --git a/source/blender/imbuf/intern/dds/BlockDXT.cpp b/source/blender/imbuf/intern/dds/BlockDXT.cpp index 8e571483e08..170cf620701 100644 --- a/source/blender/imbuf/intern/dds/BlockDXT.cpp +++ b/source/blender/imbuf/intern/dds/BlockDXT.cpp @@ -33,7 +33,7 @@ */ // 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 @@ -42,10 +42,10 @@ // 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 @@ -71,37 +71,37 @@ uint BlockDXT1::evaluatePalette(Color32 color_array[4]) const 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; - + 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; - + if ( col0.u > col1.u ) { // 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; color_array[2].a = 0xFF; - + color_array[3].r = (2 * color_array[1].r + color_array[0].r) / 3; color_array[3].g = (2 * color_array[1].g + color_array[0].g) / 3; color_array[3].b = (2 * color_array[1].b + color_array[0].b) / 3; color_array[3].a = 0xFF; - + return 4; } else { @@ -110,13 +110,13 @@ uint BlockDXT1::evaluatePalette(Color32 color_array[4]) const 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; color_array[3].a = 0x00; - + return 3; } } @@ -134,7 +134,7 @@ uint BlockDXT1::evaluatePaletteNV5x(Color32 color_array[4]) const color_array[1].g = (col1.g << 2) | (col1.g >> 4); color_array[1].b = (3 * col1.b * 22) / 8; color_array[1].a = 0xFF; - + int gdiff = color_array[1].g - color_array[0].g; if ( col0.u > col1.u ) { @@ -143,7 +143,7 @@ uint BlockDXT1::evaluatePaletteNV5x(Color32 color_array[4]) const 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; color_array[2].a = 0xFF; - + color_array[3].r = ((2 * col1.r + col0.r) * 22) / 8; color_array[3].g = (256 * color_array[1].g - gdiff / 4 + 128 - gdiff * 80) / 256; color_array[3].b = ((2 * col1.b + col0.b) * 22) / 8; @@ -157,13 +157,13 @@ uint BlockDXT1::evaluatePaletteNV5x(Color32 color_array[4]) const 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; color_array[3].a = 0x00; - + return 3; } } @@ -175,18 +175,18 @@ void BlockDXT1::evaluatePalette3(Color32 color_array[4]) const 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; - + 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; - + // 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; @@ -201,18 +201,18 @@ void BlockDXT1::evaluatePalette4(Color32 color_array[4]) const 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; - + 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; - + // 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; color_array[2].a = 0xFF; - + color_array[3].r = (2 * color_array[1].r + color_array[0].r) / 3; color_array[3].g = (2 * color_array[1].g + color_array[0].g) / 3; color_array[3].b = (2 * color_array[1].b + color_array[0].b) / 3; @@ -225,7 +225,7 @@ void BlockDXT1::decodeBlock(ColorBlock *block) const // Decode color block. Color32 color_array[4]; evaluatePalette(color_array); - + // Write color block. for ( uint j = 0; j < 4; j++ ) { for ( uint i = 0; i < 4; i++ ) { @@ -281,7 +281,7 @@ void BlockDXT3::decodeBlock(ColorBlock *block) const { // Decode color. color.decodeBlock(block); - + // Decode alpha. alpha.decodeBlock(block); } @@ -419,10 +419,10 @@ void AlphaBlockDXT5::decodeBlock(ColorBlock *block) const { uint8 alpha_array[8]; evaluatePalette(alpha_array); - + uint8 index_array[16]; indices(index_array); - + for (uint i = 0; i < 16; i++) { block->color(i).a = alpha_array[index_array[i]]; } @@ -431,26 +431,26 @@ void AlphaBlockDXT5::decodeBlock(ColorBlock *block) const void AlphaBlockDXT5::flip4() { uint64 * b = (uint64 *)this; - + // @@ The masks might have to be byte swapped. uint64 tmp = (*b & (uint64)(0x000000000000FFFFLL)); tmp |= (*b & (uint64)(0x000000000FFF0000LL)) << 36; tmp |= (*b & (uint64)(0x000000FFF0000000LL)) << 12; tmp |= (*b & (uint64)(0x000FFF0000000000LL)) >> 12; tmp |= (*b & (uint64)(0xFFF0000000000000LL)) >> 36; - + *b = tmp; } void AlphaBlockDXT5::flip2() { uint * b = (uint *)this; - + // @@ The masks might have to be byte swapped. uint tmp = (*b & 0xFF000000); tmp |= (*b & 0x00000FFF) << 12; tmp |= (*b & 0x00FFF000) >> 12; - + *b = tmp; } @@ -458,7 +458,7 @@ void BlockDXT5::decodeBlock(ColorBlock *block) const { // Decode color. color.decodeBlock(block); - + // Decode alpha. alpha.decodeBlock(block); } @@ -467,7 +467,7 @@ void BlockDXT5::decodeBlockNV5x(ColorBlock *block) const { // Decode color. color.decodeBlockNV5x(block); - + // Decode alpha. alpha.decodeBlock(block); } @@ -492,10 +492,10 @@ void BlockATI1::decodeBlock(ColorBlock *block) const { uint8 alpha_array[8]; alpha.evaluatePalette(alpha_array); - + uint8 index_array[16]; alpha.indices(index_array); - + for (uint i = 0; i < 16; i++) { Color32 & c = block->color(i); c.b = c.g = c.r = alpha_array[index_array[i]]; @@ -521,10 +521,10 @@ void BlockATI2::decodeBlock(ColorBlock *block) const { uint8 alpha_array[8]; uint8 index_array[16]; - + x.evaluatePalette(alpha_array); x.indices(index_array); - + for (uint i = 0; i < 16; i++) { Color32 & c = block->color(i); c.r = alpha_array[index_array[i]]; @@ -532,7 +532,7 @@ void BlockATI2::decodeBlock(ColorBlock *block) const y.evaluatePalette(alpha_array); y.indices(index_array); - + for (uint i = 0; i < 16; i++) { Color32 & c = block->color(i); c.g = alpha_array[index_array[i]]; @@ -563,17 +563,17 @@ void BlockCTX1::evaluatePalette(Color32 color_array[4]) const color_array[0].g = col0[1]; color_array[0].r = col0[0]; color_array[0].a = 0xFF; - + color_array[1].r = 0x00; color_array[1].g = col0[1]; color_array[1].b = col1[0]; color_array[1].a = 0xFF; - + color_array[2].r = 0x00; 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; color_array[2].a = 0xFF; - + color_array[3].r = 0x00; color_array[3].g = (2 * color_array[1].g + color_array[0].g) / 3; color_array[3].b = (2 * color_array[1].b + color_array[0].b) / 3; @@ -585,7 +585,7 @@ void BlockCTX1::decodeBlock(ColorBlock *block) const // Decode color block. Color32 color_array[4]; evaluatePalette(color_array); - + // Write color block. for ( uint j = 0; j < 4; j++ ) { for ( uint i = 0; i < 4; i++ ) { |