Mercurial > love-experiments

annotate src/libraries/ddsparse/ddsparse.cpp @ 1422:377f9dad7a2d image-CompressedData

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Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist. love.filesystem.newFileData now accepts filepaths and File objects.
author Alex Szpakowski <slime73@gmail.com>
date Sun, 07 Apr 2013 17:18:34 -0300
parents aa603d1b03bc
children
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1420
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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1 /**
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2 * Simple DDS data parser for compressed 2D textures.
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3 *
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4 * Copyright (c) 2013 Alexander Szpakowski.
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5 *
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6 * Permission is hereby granted, free of charge, to any person obtaining a copy
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7 * of this software and associated documentation files (the "Software"), to deal
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8 * in the Software without restriction, including without limitation the rights
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9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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10 * copies of the Software, and to permit persons to whom the Software is
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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11 * furnished to do so, subject to the following conditions:
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12 *
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13 * The above copyright notice and this permission notice shall be included in
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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14 * all copies or substantial portions of the Software.
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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15 *
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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22 * THE SOFTWARE.
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23 **/
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24
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25 #include "ddsparse.h"
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26 #include "ddsinfo.h"
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28 #include <algorithm>
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30 namespace dds
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31 {
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32
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33 using namespace dds::dxinfo;
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34
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35 // Creates a packed uint representation of a FourCC code.
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36 static inline uint32_t FourCC(char a, char b, char c, char d)
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37 {
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38 uint32_t fcc = ((uint32_t) a)
1422
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
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39 | (((uint32_t) b) << 8)
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
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40 | (((uint32_t) c) << 16)
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
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41 | (((uint32_t) d) << 24);
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42
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43 return fcc;
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44 }
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45
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46 Parser::Image::Image()
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47 : width(0)
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48 , height(0)
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49 , dataSize(0)
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50 , data(0)
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51 {
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52 }
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53
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54 bool Parser::isDDS(const void *data, size_t dataSize)
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55 {
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56 const uint8_t *readData = (const uint8_t *) data;
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57 ptrdiff_t offset = 0;
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58
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59 // Is the data large enough to hold the DDS header?
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60 if(dataSize < sizeof(uint32_t) + sizeof(DDSHeader))
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61 return false;
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62
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63 // All DDS files start with "DDS ".
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64 if((*(uint32_t *) readData) != FourCC('D','D','S',' '))
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65 return false;
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67 offset += sizeof(uint32_t);
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68
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69 DDSHeader *header = (DDSHeader *) &readData[offset];
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72 // Verify header to validate DDS data.
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73 if (header->size != sizeof(DDSHeader) || header->format.size != sizeof(DDSPixelFormat))
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74 return false;
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76 offset += sizeof(DDSHeader);
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78 // Check for DX10 extension.
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79 if ((header->format.flags & DDPF_FOURCC) && (header->format.fourCC == FourCC('D','X','1','0')))
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80 {
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81 // Data must be big enough for both headers plus the magic value.
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82 if (dataSize < (sizeof(uint32_t) + sizeof(DDSHeader) + sizeof(DDSHeader10)))
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83 return false;
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84 }
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85
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86 return true;
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87 }
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88
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89 bool Parser::isCompressedDDS(const void *data, size_t dataSize)
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
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parents: 1421
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90 {
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
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parents: 1421
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91 if (!isDDS(data, dataSize))
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
Alex Szpakowski <slime73@gmail.com>
parents: 1421
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92 return false;
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
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parents: 1421
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93
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parents: 1421
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94 const uint8_t *readData = (const uint8_t *) data;
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
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parents: 1421
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95 ptrdiff_t offset = sizeof(uint32_t);
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
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parents: 1421
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96
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
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parents: 1421
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97 DDSHeader *header = (DDSHeader *) &readData[offset];
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
Alex Szpakowski <slime73@gmail.com>
parents: 1421
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98 offset += sizeof(DDSHeader);
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
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99
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100 // Check for DX10 extension.
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101 if ((header->format.flags & DDPF_FOURCC) && (header->format.fourCC == FourCC('D','X','1','0')))
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102 {
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103 DDSHeader10 *header10 = (DDSHeader10 *) &readData[offset];
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104 return parseDX10Format(header10->dxgiFormat) != FORMAT_UNKNOWN;
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105 }
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106
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107 return parseDDSFormat(header->format) != FORMAT_UNKNOWN;
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108 }
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109
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110 Parser::Parser(const void *data, size_t dataSize)
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111 : format(FORMAT_UNKNOWN)
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112 {
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113 parseData(data, dataSize);
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114 }
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115
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116 Parser::Parser(const Parser &other)
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117 : texData(other.texData)
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118 , format(other.format)
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119 {
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120 }
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121
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122 Parser::Parser()
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123 : format(FORMAT_UNKNOWN)
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124 {
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125 }
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126
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127 Parser &Parser::operator = (const Parser &other)
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128 {
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129 texData = other.texData;
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130 format = other.format;
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131
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132 return *this;
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133 }
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134
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135 Parser::~Parser()
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136 {
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137 }
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138
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139 Format Parser::getFormat() const
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140 {
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141 return format;
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142 }
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143
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144 const Parser::Image *Parser::getImageData(size_t miplevel) const
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145 {
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146 if (miplevel >= texData.size())
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147 return 0;
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148
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149 return &texData[miplevel];
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150 }
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151
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152 size_t Parser::getNumMipmaps() const
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153 {
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154 return texData.size();
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155 }
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156
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157 Format Parser::parseDDSFormat(const DDSPixelFormat &fmt)
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158 {
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159 if (fmt.flags & DDPF_FOURCC)
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160 {
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161 if (fmt.fourCC == FourCC('D','X','T','1'))
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162 return FORMAT_DXT1;
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163 else if (fmt.fourCC == FourCC('D','X','T','3'))
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164 return FORMAT_DXT3;
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165 else if (fmt.fourCC == FourCC('D','X','T','5'))
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166 return FORMAT_DXT5;
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167 else if (fmt.fourCC == FourCC('A','T','I','1'))
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168 return FORMAT_BC4;
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169 else if (fmt.fourCC == FourCC('A','T','I','2'))
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170 return FORMAT_BC5;
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171 else if (fmt.fourCC == FourCC('B','C','4','U'))
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172 return FORMAT_BC4;
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173 else if (fmt.fourCC == FourCC('B','C','4','S'))
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174 return FORMAT_BC4s;
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175 else if (fmt.fourCC == FourCC('B','C','5','U'))
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176 return FORMAT_BC5;
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177 else if (fmt.fourCC == FourCC('B','C','5','S'))
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178 return FORMAT_BC5s;
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179 }
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180
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181 return FORMAT_UNKNOWN;
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182 }
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183
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184 Format Parser::parseDX10Format(DXGIFormat fmt)
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185 {
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186 Format f = FORMAT_UNKNOWN;
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187
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188 switch (fmt)
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189 {
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190 case DXGI_FORMAT_BC1_TYPELESS:
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191 case DXGI_FORMAT_BC1_UNORM:
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192 case DXGI_FORMAT_BC1_UNORM_SRGB:
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193 f = FORMAT_DXT1;
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194 break;
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195 case DXGI_FORMAT_BC2_TYPELESS:
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196 case DXGI_FORMAT_BC2_UNORM:
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197 case DXGI_FORMAT_BC2_UNORM_SRGB:
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198 f = FORMAT_DXT3;
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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parents:
diff changeset
199 break;
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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parents:
diff changeset
200 case DXGI_FORMAT_BC3_TYPELESS:
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
Alex Szpakowski <slime73@gmail.com>
parents:
diff changeset
201 case DXGI_FORMAT_BC3_UNORM:
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
Alex Szpakowski <slime73@gmail.com>
parents:
diff changeset
202 case DXGI_FORMAT_BC3_UNORM_SRGB:
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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parents:
diff changeset
203 f = FORMAT_DXT5;
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
Alex Szpakowski <slime73@gmail.com>
parents:
diff changeset
204 break;
1422
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
Alex Szpakowski <slime73@gmail.com>
parents: 1421
diff changeset
205 case DXGI_FORMAT_BC4_TYPELESS:
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
Alex Szpakowski <slime73@gmail.com>
parents: 1421
diff changeset
206 case DXGI_FORMAT_BC4_UNORM:
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
Alex Szpakowski <slime73@gmail.com>
parents: 1421
diff changeset
207 f = FORMAT_BC4;
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
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parents: 1421
diff changeset
208 break;
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
Alex Szpakowski <slime73@gmail.com>
parents: 1421
diff changeset
209 case DXGI_FORMAT_BC4_SNORM:
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
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parents: 1421
diff changeset
210 f = FORMAT_BC4s;
1420
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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parents:
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211 break;
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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parents:
diff changeset
212 case DXGI_FORMAT_BC5_TYPELESS:
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
Alex Szpakowski <slime73@gmail.com>
parents:
diff changeset
213 case DXGI_FORMAT_BC5_UNORM:
1421
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parents: 1420
diff changeset
214 f = FORMAT_BC5;
1420
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parents:
diff changeset
215 break;
1422
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
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parents: 1421
diff changeset
216 case DXGI_FORMAT_BC5_SNORM:
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
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parents: 1421
diff changeset
217 f = FORMAT_BC5s;
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
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parents: 1421
diff changeset
218 break;
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
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parents: 1421
diff changeset
219 case DXGI_FORMAT_BC6H_TYPELESS:
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
Alex Szpakowski <slime73@gmail.com>
parents: 1421
diff changeset
220 case DXGI_FORMAT_BC6H_UF16:
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
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parents: 1421
diff changeset
221 f = FORMAT_BC6H;
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
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parents: 1421
diff changeset
222 break;
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
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parents: 1421
diff changeset
223 case DXGI_FORMAT_BC6H_SF16:
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
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parents: 1421
diff changeset
224 f = FORAMT_BC6Hs;
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
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parents: 1421
diff changeset
225 break;
1420
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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parents:
diff changeset
226 case DXGI_FORMAT_BC7_TYPELESS:
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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parents:
diff changeset
227 case DXGI_FORMAT_BC7_UNORM:
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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diff changeset
228 f = FORMAT_BC7;
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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parents:
diff changeset
229 break;
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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parents:
diff changeset
230 case DXGI_FORMAT_BC7_UNORM_SRGB:
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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231 f = FORMAT_BC7srgb;
1422
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parents: 1421
diff changeset
232 break;
1420
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diff changeset
233 default:
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
Alex Szpakowski <slime73@gmail.com>
parents:
diff changeset
234 break;
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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235 }
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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236
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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237 return f;
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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238 }
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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parents:
diff changeset
239
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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diff changeset
240 size_t Parser::parseImageSize(Format fmt, int width, int height) const
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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diff changeset
241 {
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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diff changeset
242 size_t size = 0;
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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243
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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parents:
diff changeset
244 switch (fmt)
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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diff changeset
245 {
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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246 case FORMAT_DXT1:
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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247 case FORMAT_DXT3:
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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248 case FORMAT_DXT5:
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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parents:
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249 case FORMAT_BC5s:
1421
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250 case FORMAT_BC5:
1420
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251 case FORMAT_BC7:
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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252 case FORMAT_BC7srgb:
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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parents:
diff changeset
253 {
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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diff changeset
254 int numBlocksWide = 0;
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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parents:
diff changeset
255 if (width > 0)
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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diff changeset
256 numBlocksWide = std::max(1, (width + 3) / 4);
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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parents:
diff changeset
257
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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diff changeset
258 int numBlocksHigh = 0;
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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parents:
diff changeset
259 if (height > 0)
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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parents:
diff changeset
260 numBlocksHigh = std::max(1, (height + 3) / 4);
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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diff changeset
261
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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parents:
diff changeset
262 int numBytesPerBlock = (fmt == FORMAT_DXT1 ? 8 : 16);
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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parents:
diff changeset
263
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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diff changeset
264 size = numBlocksWide * numBytesPerBlock * numBlocksHigh;
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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parents:
diff changeset
265 }
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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parents:
diff changeset
266 break;
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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parents:
diff changeset
267 default:
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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parents:
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268 break;
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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269 }
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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270
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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271 return size;
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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272 }
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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273
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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diff changeset
274 bool Parser::parseTexData(const uint8_t *data, size_t dataSize, Format fmt, int w, int h, int mips)
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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275 {
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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276 size_t offset = 0;
1422
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
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277 std::vector<Image> newTexData;
1420
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278
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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diff changeset
279 for (int i = 0; i < mips; i++)
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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diff changeset
280 {
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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diff changeset
281 Image img;
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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282 img.width = w;
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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diff changeset
283 img.height = h;
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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284
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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diff changeset
285 img.dataSize = parseImageSize(fmt, img.width, img.height);
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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parents:
diff changeset
286
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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287 // Make sure the data size is valid.
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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diff changeset
288 if (img.dataSize == 0 || (offset + img.dataSize) > dataSize)
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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diff changeset
289 return false;
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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290
1422
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parents: 1421
diff changeset
291 // Store the memory address of the data representing this mip level.
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
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diff changeset
292 img.data = &data[offset];
1420
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293
1422
377f9dad7a2d Replaced the devil love.image module with love.image.magpie, which can decide which image library to use in a similar manner to love.sound.lullaby. Some rough edges still exist.
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diff changeset
294 newTexData.push_back(img);
1420
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295
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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diff changeset
296 // Move to the next mip level.
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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parents:
diff changeset
297 offset += img.dataSize;
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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298
2a5ef265e040 Added support for DXT1/3/5 and BC5/7 compressed textures via love.image.CompressedData. Some internals are still iffy.
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diff changeset
299 w = std::max(w / 2, 1);
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300 h = std::max(h / 2, 1);
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301 }
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302
1422
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303 texData = newTexData;
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304
1420
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305 return true;
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306 }
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307
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308 bool Parser::parseData(const void *data, size_t dataSize)
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309 {
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310 if (!isDDS(data, dataSize))
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311 return false;
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312
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313 const uint8_t *readData = (const uint8_t *) data;
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314 ptrdiff_t offset = sizeof(uint32_t);
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315
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316 DDSHeader *header = (DDSHeader *) &readData[offset];
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317 offset += sizeof(DDSHeader);
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318
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319
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320 // Check for DX10 extension.
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321 if ((header->format.flags & DDPF_FOURCC) && (header->format.fourCC == FourCC('D','X','1','0')))
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322 {
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323 DDSHeader10 *header10 = (DDSHeader10 *) &readData[offset];
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324 offset += sizeof(DDSHeader10);
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325
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326 // We can't deal with 1D/3D textures.
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327 switch (header10->resourceDimension)
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328 {
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329 case D3D10_RESOURCE_DIMENSION_TEXTURE2D:
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330 case D3D10_RESOURCE_DIMENSION_UNKNOWN:
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331 break;
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332 default:
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333 return false;
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334 }
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335
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336 // We also can't deal with texture arrays and cubemaps.
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337 if (header10->arraySize > 1)
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338 return false;
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339
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340 format = parseDX10Format(header10->dxgiFormat);
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341 }
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342 else
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343 format = parseDDSFormat(header->format);
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344
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345
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346 if (format == FORMAT_UNKNOWN)
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347 return false;
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348
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349
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350 int w = header->width;
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351 int h = header->height;
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352
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353 int mips = std::max((int) header->mipMapCount, 1);
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354
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355 return parseTexData(&readData[offset], dataSize - offset, format, w, h, mips);
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356 }
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357
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358 } // dds