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55 | pj | 1 | /* $Id: pixel.c,v 1.1 2003-02-28 11:42:04 pj Exp $ */ |
2 | |||
3 | /* |
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4 | * Mesa 3-D graphics library |
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5 | * Version: 4.1 |
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6 | * |
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7 | * Copyright (C) 1999-2002 Brian Paul All Rights Reserved. |
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8 | * |
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9 | * Permission is hereby granted, free of charge, to any person obtaining a |
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10 | * copy of this software and associated documentation files (the "Software"), |
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11 | * to deal in the Software without restriction, including without limitation |
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12 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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13 | * and/or sell copies of the Software, and to permit persons to whom the |
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14 | * Software is furnished to do so, subject to the following conditions: |
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15 | * |
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16 | * The above copyright notice and this permission notice shall be included |
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17 | * in all copies or substantial portions of the Software. |
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18 | * |
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19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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20 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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21 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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22 | * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN |
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23 | * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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24 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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25 | */ |
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26 | |||
27 | #include "glheader.h" |
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28 | #include "imports.h" |
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29 | #include "colormac.h" |
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30 | #include "context.h" |
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31 | #include "macros.h" |
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32 | #include "pixel.h" |
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33 | #include "mtypes.h" |
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34 | |||
35 | |||
36 | /**********************************************************************/ |
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37 | /***** glPixelZoom *****/ |
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38 | /**********************************************************************/ |
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39 | |||
40 | |||
41 | |||
42 | void |
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43 | _mesa_PixelZoom( GLfloat xfactor, GLfloat yfactor ) |
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44 | { |
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45 | GET_CURRENT_CONTEXT(ctx); |
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46 | |||
47 | if (ctx->Pixel.ZoomX == xfactor && |
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48 | ctx->Pixel.ZoomY == yfactor) |
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49 | return; |
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50 | |||
51 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
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52 | ctx->Pixel.ZoomX = xfactor; |
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53 | ctx->Pixel.ZoomY = yfactor; |
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54 | } |
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55 | |||
56 | |||
57 | |||
58 | /**********************************************************************/ |
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59 | /***** glPixelStore *****/ |
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60 | /**********************************************************************/ |
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61 | |||
62 | |||
63 | void |
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64 | _mesa_PixelStorei( GLenum pname, GLint param ) |
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65 | { |
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66 | /* NOTE: this call can't be compiled into the display list */ |
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67 | GET_CURRENT_CONTEXT(ctx); |
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68 | ASSERT_OUTSIDE_BEGIN_END(ctx); |
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69 | |||
70 | switch (pname) { |
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71 | case GL_PACK_SWAP_BYTES: |
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72 | if (param == (GLint)ctx->Pack.SwapBytes) |
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73 | return; |
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74 | FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
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75 | ctx->Pack.SwapBytes = param ? GL_TRUE : GL_FALSE; |
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76 | break; |
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77 | case GL_PACK_LSB_FIRST: |
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78 | if (param == (GLint)ctx->Pack.LsbFirst) |
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79 | return; |
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80 | FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
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81 | ctx->Pack.LsbFirst = param ? GL_TRUE : GL_FALSE; |
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82 | break; |
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83 | case GL_PACK_ROW_LENGTH: |
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84 | if (param<0) { |
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85 | _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" ); |
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86 | return; |
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87 | } |
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88 | if (ctx->Pack.RowLength == param) |
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89 | return; |
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90 | FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
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91 | ctx->Pack.RowLength = param; |
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92 | break; |
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93 | case GL_PACK_IMAGE_HEIGHT: |
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94 | if (param<0) { |
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95 | _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" ); |
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96 | return; |
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97 | } |
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98 | if (ctx->Pack.ImageHeight == param) |
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99 | return; |
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100 | FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
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101 | ctx->Pack.ImageHeight = param; |
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102 | break; |
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103 | case GL_PACK_SKIP_PIXELS: |
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104 | if (param<0) { |
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105 | _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" ); |
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106 | return; |
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107 | } |
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108 | if (ctx->Pack.SkipPixels == param) |
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109 | return; |
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110 | FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
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111 | ctx->Pack.SkipPixels = param; |
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112 | break; |
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113 | case GL_PACK_SKIP_ROWS: |
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114 | if (param<0) { |
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115 | _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" ); |
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116 | return; |
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117 | } |
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118 | if (ctx->Pack.SkipRows == param) |
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119 | return; |
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120 | FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
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121 | ctx->Pack.SkipRows = param; |
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122 | break; |
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123 | case GL_PACK_SKIP_IMAGES: |
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124 | if (param<0) { |
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125 | _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" ); |
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126 | return; |
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127 | } |
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128 | if (ctx->Pack.SkipImages == param) |
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129 | return; |
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130 | FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
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131 | ctx->Pack.SkipImages = param; |
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132 | break; |
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133 | case GL_PACK_ALIGNMENT: |
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134 | if (param!=1 && param!=2 && param!=4 && param!=8) { |
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135 | _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" ); |
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136 | return; |
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137 | } |
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138 | if (ctx->Pack.Alignment == param) |
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139 | return; |
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140 | FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
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141 | ctx->Pack.Alignment = param; |
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142 | break; |
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143 | case GL_PACK_INVERT_MESA: |
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144 | if (!ctx->Extensions.MESA_pack_invert) { |
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145 | _mesa_error( ctx, GL_INVALID_ENUM, "glPixelstore(pname)" ); |
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146 | return; |
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147 | } |
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148 | if (ctx->Pack.Invert == param) |
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149 | return; |
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150 | FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
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151 | ctx->Pack.Invert = param; |
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152 | break; |
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153 | |||
154 | case GL_UNPACK_SWAP_BYTES: |
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155 | if (param == (GLint)ctx->Unpack.SwapBytes) |
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156 | return; |
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157 | if ((GLint)ctx->Unpack.SwapBytes == param) |
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158 | return; |
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159 | FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
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160 | ctx->Unpack.SwapBytes = param ? GL_TRUE : GL_FALSE; |
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161 | break; |
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162 | case GL_UNPACK_LSB_FIRST: |
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163 | if (param == (GLint)ctx->Unpack.LsbFirst) |
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164 | return; |
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165 | if ((GLint)ctx->Unpack.LsbFirst == param) |
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166 | return; |
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167 | FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
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168 | ctx->Unpack.LsbFirst = param ? GL_TRUE : GL_FALSE; |
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169 | break; |
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170 | case GL_UNPACK_ROW_LENGTH: |
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171 | if (param<0) { |
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172 | _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" ); |
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173 | return; |
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174 | } |
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175 | if (ctx->Unpack.RowLength == param) |
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176 | return; |
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177 | FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
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178 | ctx->Unpack.RowLength = param; |
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179 | break; |
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180 | case GL_UNPACK_IMAGE_HEIGHT: |
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181 | if (param<0) { |
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182 | _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" ); |
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183 | return; |
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184 | } |
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185 | if (ctx->Unpack.ImageHeight == param) |
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186 | return; |
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187 | |||
188 | FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
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189 | ctx->Unpack.ImageHeight = param; |
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190 | break; |
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191 | case GL_UNPACK_SKIP_PIXELS: |
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192 | if (param<0) { |
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193 | _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" ); |
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194 | return; |
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195 | } |
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196 | if (ctx->Unpack.SkipPixels == param) |
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197 | return; |
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198 | FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
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199 | ctx->Unpack.SkipPixels = param; |
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200 | break; |
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201 | case GL_UNPACK_SKIP_ROWS: |
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202 | if (param<0) { |
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203 | _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" ); |
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204 | return; |
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205 | } |
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206 | if (ctx->Unpack.SkipRows == param) |
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207 | return; |
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208 | FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
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209 | ctx->Unpack.SkipRows = param; |
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210 | break; |
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211 | case GL_UNPACK_SKIP_IMAGES: |
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212 | if (param < 0) { |
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213 | _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" ); |
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214 | return; |
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215 | } |
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216 | if (ctx->Unpack.SkipImages == param) |
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217 | return; |
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218 | FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
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219 | ctx->Unpack.SkipImages = param; |
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220 | break; |
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221 | case GL_UNPACK_ALIGNMENT: |
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222 | if (param!=1 && param!=2 && param!=4 && param!=8) { |
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223 | _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore" ); |
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224 | return; |
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225 | } |
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226 | if (ctx->Unpack.Alignment == param) |
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227 | return; |
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228 | FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
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229 | ctx->Unpack.Alignment = param; |
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230 | break; |
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231 | case GL_UNPACK_CLIENT_STORAGE_APPLE: |
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232 | if (param == (GLint)ctx->Unpack.ClientStorage) |
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233 | return; |
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234 | FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
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235 | ctx->Unpack.ClientStorage = param ? GL_TRUE : GL_FALSE; |
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236 | break; |
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237 | default: |
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238 | _mesa_error( ctx, GL_INVALID_ENUM, "glPixelStore" ); |
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239 | return; |
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240 | } |
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241 | } |
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242 | |||
243 | |||
244 | void |
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245 | _mesa_PixelStoref( GLenum pname, GLfloat param ) |
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246 | { |
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247 | _mesa_PixelStorei( pname, (GLint) param ); |
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248 | } |
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249 | |||
250 | |||
251 | |||
252 | /**********************************************************************/ |
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253 | /***** glPixelMap *****/ |
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254 | /**********************************************************************/ |
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255 | |||
256 | |||
257 | |||
258 | void |
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259 | _mesa_PixelMapfv( GLenum map, GLint mapsize, const GLfloat *values ) |
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260 | { |
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261 | GLint i; |
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262 | GET_CURRENT_CONTEXT(ctx); |
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263 | ASSERT_OUTSIDE_BEGIN_END(ctx); |
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264 | |||
265 | if (mapsize < 1 || mapsize > MAX_PIXEL_MAP_TABLE) { |
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266 | _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapfv(mapsize)" ); |
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267 | return; |
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268 | } |
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269 | |||
270 | if (map >= GL_PIXEL_MAP_S_TO_S && map <= GL_PIXEL_MAP_I_TO_A) { |
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271 | /* test that mapsize is a power of two */ |
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272 | if (_mesa_bitcount((GLuint) mapsize) != 1) { |
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273 | _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapfv(mapsize)" ); |
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274 | return; |
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275 | } |
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276 | } |
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277 | |||
278 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
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279 | |||
280 | switch (map) { |
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281 | case GL_PIXEL_MAP_S_TO_S: |
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282 | ctx->Pixel.MapStoSsize = mapsize; |
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283 | for (i=0;i<mapsize;i++) { |
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284 | ctx->Pixel.MapStoS[i] = (GLint) values[i]; |
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285 | } |
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286 | break; |
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287 | case GL_PIXEL_MAP_I_TO_I: |
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288 | ctx->Pixel.MapItoIsize = mapsize; |
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289 | for (i=0;i<mapsize;i++) { |
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290 | ctx->Pixel.MapItoI[i] = (GLint) values[i]; |
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291 | } |
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292 | break; |
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293 | case GL_PIXEL_MAP_I_TO_R: |
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294 | ctx->Pixel.MapItoRsize = mapsize; |
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295 | for (i=0;i<mapsize;i++) { |
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296 | GLfloat val = CLAMP( values[i], 0.0F, 1.0F ); |
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297 | ctx->Pixel.MapItoR[i] = val; |
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298 | ctx->Pixel.MapItoR8[i] = (GLint) (val * 255.0F); |
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299 | } |
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300 | break; |
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301 | case GL_PIXEL_MAP_I_TO_G: |
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302 | ctx->Pixel.MapItoGsize = mapsize; |
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303 | for (i=0;i<mapsize;i++) { |
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304 | GLfloat val = CLAMP( values[i], 0.0F, 1.0F ); |
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305 | ctx->Pixel.MapItoG[i] = val; |
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306 | ctx->Pixel.MapItoG8[i] = (GLint) (val * 255.0F); |
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307 | } |
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308 | break; |
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309 | case GL_PIXEL_MAP_I_TO_B: |
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310 | ctx->Pixel.MapItoBsize = mapsize; |
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311 | for (i=0;i<mapsize;i++) { |
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312 | GLfloat val = CLAMP( values[i], 0.0F, 1.0F ); |
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313 | ctx->Pixel.MapItoB[i] = val; |
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314 | ctx->Pixel.MapItoB8[i] = (GLint) (val * 255.0F); |
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315 | } |
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316 | break; |
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317 | case GL_PIXEL_MAP_I_TO_A: |
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318 | ctx->Pixel.MapItoAsize = mapsize; |
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319 | for (i=0;i<mapsize;i++) { |
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320 | GLfloat val = CLAMP( values[i], 0.0F, 1.0F ); |
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321 | ctx->Pixel.MapItoA[i] = val; |
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322 | ctx->Pixel.MapItoA8[i] = (GLint) (val * 255.0F); |
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323 | } |
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324 | break; |
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325 | case GL_PIXEL_MAP_R_TO_R: |
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326 | ctx->Pixel.MapRtoRsize = mapsize; |
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327 | for (i=0;i<mapsize;i++) { |
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328 | ctx->Pixel.MapRtoR[i] = CLAMP( values[i], 0.0F, 1.0F ); |
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329 | } |
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330 | break; |
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331 | case GL_PIXEL_MAP_G_TO_G: |
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332 | ctx->Pixel.MapGtoGsize = mapsize; |
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333 | for (i=0;i<mapsize;i++) { |
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334 | ctx->Pixel.MapGtoG[i] = CLAMP( values[i], 0.0F, 1.0F ); |
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335 | } |
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336 | break; |
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337 | case GL_PIXEL_MAP_B_TO_B: |
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338 | ctx->Pixel.MapBtoBsize = mapsize; |
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339 | for (i=0;i<mapsize;i++) { |
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340 | ctx->Pixel.MapBtoB[i] = CLAMP( values[i], 0.0F, 1.0F ); |
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341 | } |
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342 | break; |
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343 | case GL_PIXEL_MAP_A_TO_A: |
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344 | ctx->Pixel.MapAtoAsize = mapsize; |
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345 | for (i=0;i<mapsize;i++) { |
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346 | ctx->Pixel.MapAtoA[i] = CLAMP( values[i], 0.0F, 1.0F ); |
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347 | } |
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348 | break; |
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349 | default: |
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350 | _mesa_error( ctx, GL_INVALID_ENUM, "glPixelMapfv(map)" ); |
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351 | } |
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352 | } |
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353 | |||
354 | |||
355 | |||
356 | void |
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357 | _mesa_PixelMapuiv(GLenum map, GLint mapsize, const GLuint *values ) |
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358 | { |
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359 | const GLint n = MIN2(mapsize, MAX_PIXEL_MAP_TABLE); |
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360 | GLfloat fvalues[MAX_PIXEL_MAP_TABLE]; |
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361 | GLint i; |
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362 | if (map==GL_PIXEL_MAP_I_TO_I || map==GL_PIXEL_MAP_S_TO_S) { |
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363 | for (i=0;i<n;i++) { |
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364 | fvalues[i] = (GLfloat) values[i]; |
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365 | } |
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366 | } |
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367 | else { |
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368 | for (i=0;i<n;i++) { |
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369 | fvalues[i] = UINT_TO_FLOAT( values[i] ); |
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370 | } |
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371 | } |
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372 | _mesa_PixelMapfv(map, mapsize, fvalues); |
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373 | } |
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374 | |||
375 | |||
376 | |||
377 | void |
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378 | _mesa_PixelMapusv(GLenum map, GLint mapsize, const GLushort *values ) |
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379 | { |
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380 | const GLint n = MIN2(mapsize, MAX_PIXEL_MAP_TABLE); |
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381 | GLfloat fvalues[MAX_PIXEL_MAP_TABLE]; |
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382 | GLint i; |
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383 | if (map==GL_PIXEL_MAP_I_TO_I || map==GL_PIXEL_MAP_S_TO_S) { |
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384 | for (i=0;i<n;i++) { |
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385 | fvalues[i] = (GLfloat) values[i]; |
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386 | } |
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387 | } |
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388 | else { |
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389 | for (i=0;i<n;i++) { |
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390 | fvalues[i] = USHORT_TO_FLOAT( values[i] ); |
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391 | } |
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392 | } |
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393 | _mesa_PixelMapfv(map, mapsize, fvalues); |
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394 | } |
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395 | |||
396 | |||
397 | |||
398 | void |
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399 | _mesa_GetPixelMapfv( GLenum map, GLfloat *values ) |
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400 | { |
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401 | GET_CURRENT_CONTEXT(ctx); |
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402 | GLint i; |
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403 | ASSERT_OUTSIDE_BEGIN_END(ctx); |
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404 | |||
405 | switch (map) { |
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406 | case GL_PIXEL_MAP_I_TO_I: |
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407 | for (i=0;i<ctx->Pixel.MapItoIsize;i++) { |
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408 | values[i] = (GLfloat) ctx->Pixel.MapItoI[i]; |
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409 | } |
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410 | break; |
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411 | case GL_PIXEL_MAP_S_TO_S: |
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412 | for (i=0;i<ctx->Pixel.MapStoSsize;i++) { |
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413 | values[i] = (GLfloat) ctx->Pixel.MapStoS[i]; |
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414 | } |
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415 | break; |
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416 | case GL_PIXEL_MAP_I_TO_R: |
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417 | MEMCPY(values,ctx->Pixel.MapItoR,ctx->Pixel.MapItoRsize*sizeof(GLfloat)); |
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418 | break; |
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419 | case GL_PIXEL_MAP_I_TO_G: |
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420 | MEMCPY(values,ctx->Pixel.MapItoG,ctx->Pixel.MapItoGsize*sizeof(GLfloat)); |
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421 | break; |
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422 | case GL_PIXEL_MAP_I_TO_B: |
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423 | MEMCPY(values,ctx->Pixel.MapItoB,ctx->Pixel.MapItoBsize*sizeof(GLfloat)); |
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424 | break; |
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425 | case GL_PIXEL_MAP_I_TO_A: |
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426 | MEMCPY(values,ctx->Pixel.MapItoA,ctx->Pixel.MapItoAsize*sizeof(GLfloat)); |
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427 | break; |
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428 | case GL_PIXEL_MAP_R_TO_R: |
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429 | MEMCPY(values,ctx->Pixel.MapRtoR,ctx->Pixel.MapRtoRsize*sizeof(GLfloat)); |
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430 | break; |
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431 | case GL_PIXEL_MAP_G_TO_G: |
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432 | MEMCPY(values,ctx->Pixel.MapGtoG,ctx->Pixel.MapGtoGsize*sizeof(GLfloat)); |
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433 | break; |
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434 | case GL_PIXEL_MAP_B_TO_B: |
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435 | MEMCPY(values,ctx->Pixel.MapBtoB,ctx->Pixel.MapBtoBsize*sizeof(GLfloat)); |
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436 | break; |
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437 | case GL_PIXEL_MAP_A_TO_A: |
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438 | MEMCPY(values,ctx->Pixel.MapAtoA,ctx->Pixel.MapAtoAsize*sizeof(GLfloat)); |
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439 | break; |
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440 | default: |
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441 | _mesa_error( ctx, GL_INVALID_ENUM, "glGetPixelMapfv" ); |
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442 | } |
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443 | } |
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444 | |||
445 | |||
446 | void |
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447 | _mesa_GetPixelMapuiv( GLenum map, GLuint *values ) |
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448 | { |
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449 | GET_CURRENT_CONTEXT(ctx); |
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450 | GLint i; |
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451 | ASSERT_OUTSIDE_BEGIN_END(ctx); |
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452 | |||
453 | switch (map) { |
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454 | case GL_PIXEL_MAP_I_TO_I: |
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455 | MEMCPY(values, ctx->Pixel.MapItoI, ctx->Pixel.MapItoIsize*sizeof(GLint)); |
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456 | break; |
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457 | case GL_PIXEL_MAP_S_TO_S: |
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458 | MEMCPY(values, ctx->Pixel.MapStoS, ctx->Pixel.MapStoSsize*sizeof(GLint)); |
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459 | break; |
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460 | case GL_PIXEL_MAP_I_TO_R: |
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461 | for (i=0;i<ctx->Pixel.MapItoRsize;i++) { |
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462 | values[i] = FLOAT_TO_UINT( ctx->Pixel.MapItoR[i] ); |
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463 | } |
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464 | break; |
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465 | case GL_PIXEL_MAP_I_TO_G: |
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466 | for (i=0;i<ctx->Pixel.MapItoGsize;i++) { |
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467 | values[i] = FLOAT_TO_UINT( ctx->Pixel.MapItoG[i] ); |
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468 | } |
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469 | break; |
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470 | case GL_PIXEL_MAP_I_TO_B: |
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471 | for (i=0;i<ctx->Pixel.MapItoBsize;i++) { |
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472 | values[i] = FLOAT_TO_UINT( ctx->Pixel.MapItoB[i] ); |
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473 | } |
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474 | break; |
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475 | case GL_PIXEL_MAP_I_TO_A: |
||
476 | for (i=0;i<ctx->Pixel.MapItoAsize;i++) { |
||
477 | values[i] = FLOAT_TO_UINT( ctx->Pixel.MapItoA[i] ); |
||
478 | } |
||
479 | break; |
||
480 | case GL_PIXEL_MAP_R_TO_R: |
||
481 | for (i=0;i<ctx->Pixel.MapRtoRsize;i++) { |
||
482 | values[i] = FLOAT_TO_UINT( ctx->Pixel.MapRtoR[i] ); |
||
483 | } |
||
484 | break; |
||
485 | case GL_PIXEL_MAP_G_TO_G: |
||
486 | for (i=0;i<ctx->Pixel.MapGtoGsize;i++) { |
||
487 | values[i] = FLOAT_TO_UINT( ctx->Pixel.MapGtoG[i] ); |
||
488 | } |
||
489 | break; |
||
490 | case GL_PIXEL_MAP_B_TO_B: |
||
491 | for (i=0;i<ctx->Pixel.MapBtoBsize;i++) { |
||
492 | values[i] = FLOAT_TO_UINT( ctx->Pixel.MapBtoB[i] ); |
||
493 | } |
||
494 | break; |
||
495 | case GL_PIXEL_MAP_A_TO_A: |
||
496 | for (i=0;i<ctx->Pixel.MapAtoAsize;i++) { |
||
497 | values[i] = FLOAT_TO_UINT( ctx->Pixel.MapAtoA[i] ); |
||
498 | } |
||
499 | break; |
||
500 | default: |
||
501 | _mesa_error( ctx, GL_INVALID_ENUM, "glGetPixelMapfv" ); |
||
502 | } |
||
503 | } |
||
504 | |||
505 | |||
506 | void |
||
507 | _mesa_GetPixelMapusv( GLenum map, GLushort *values ) |
||
508 | { |
||
509 | GET_CURRENT_CONTEXT(ctx); |
||
510 | GLint i; |
||
511 | ASSERT_OUTSIDE_BEGIN_END(ctx); |
||
512 | |||
513 | switch (map) { |
||
514 | case GL_PIXEL_MAP_I_TO_I: |
||
515 | for (i=0;i<ctx->Pixel.MapItoIsize;i++) { |
||
516 | values[i] = (GLushort) ctx->Pixel.MapItoI[i]; |
||
517 | } |
||
518 | break; |
||
519 | case GL_PIXEL_MAP_S_TO_S: |
||
520 | for (i=0;i<ctx->Pixel.MapStoSsize;i++) { |
||
521 | values[i] = (GLushort) ctx->Pixel.MapStoS[i]; |
||
522 | } |
||
523 | break; |
||
524 | case GL_PIXEL_MAP_I_TO_R: |
||
525 | for (i=0;i<ctx->Pixel.MapItoRsize;i++) { |
||
526 | values[i] = FLOAT_TO_USHORT( ctx->Pixel.MapItoR[i] ); |
||
527 | } |
||
528 | break; |
||
529 | case GL_PIXEL_MAP_I_TO_G: |
||
530 | for (i=0;i<ctx->Pixel.MapItoGsize;i++) { |
||
531 | values[i] = FLOAT_TO_USHORT( ctx->Pixel.MapItoG[i] ); |
||
532 | } |
||
533 | break; |
||
534 | case GL_PIXEL_MAP_I_TO_B: |
||
535 | for (i=0;i<ctx->Pixel.MapItoBsize;i++) { |
||
536 | values[i] = FLOAT_TO_USHORT( ctx->Pixel.MapItoB[i] ); |
||
537 | } |
||
538 | break; |
||
539 | case GL_PIXEL_MAP_I_TO_A: |
||
540 | for (i=0;i<ctx->Pixel.MapItoAsize;i++) { |
||
541 | values[i] = FLOAT_TO_USHORT( ctx->Pixel.MapItoA[i] ); |
||
542 | } |
||
543 | break; |
||
544 | case GL_PIXEL_MAP_R_TO_R: |
||
545 | for (i=0;i<ctx->Pixel.MapRtoRsize;i++) { |
||
546 | values[i] = FLOAT_TO_USHORT( ctx->Pixel.MapRtoR[i] ); |
||
547 | } |
||
548 | break; |
||
549 | case GL_PIXEL_MAP_G_TO_G: |
||
550 | for (i=0;i<ctx->Pixel.MapGtoGsize;i++) { |
||
551 | values[i] = FLOAT_TO_USHORT( ctx->Pixel.MapGtoG[i] ); |
||
552 | } |
||
553 | break; |
||
554 | case GL_PIXEL_MAP_B_TO_B: |
||
555 | for (i=0;i<ctx->Pixel.MapBtoBsize;i++) { |
||
556 | values[i] = FLOAT_TO_USHORT( ctx->Pixel.MapBtoB[i] ); |
||
557 | } |
||
558 | break; |
||
559 | case GL_PIXEL_MAP_A_TO_A: |
||
560 | for (i=0;i<ctx->Pixel.MapAtoAsize;i++) { |
||
561 | values[i] = FLOAT_TO_USHORT( ctx->Pixel.MapAtoA[i] ); |
||
562 | } |
||
563 | break; |
||
564 | default: |
||
565 | _mesa_error( ctx, GL_INVALID_ENUM, "glGetPixelMapfv" ); |
||
566 | } |
||
567 | } |
||
568 | |||
569 | |||
570 | |||
571 | /**********************************************************************/ |
||
572 | /***** glPixelTransfer *****/ |
||
573 | /**********************************************************************/ |
||
574 | |||
575 | |||
576 | /* |
||
577 | * Implements glPixelTransfer[fi] whether called immediately or from a |
||
578 | * display list. |
||
579 | */ |
||
580 | void |
||
581 | _mesa_PixelTransferf( GLenum pname, GLfloat param ) |
||
582 | { |
||
583 | GET_CURRENT_CONTEXT(ctx); |
||
584 | ASSERT_OUTSIDE_BEGIN_END(ctx); |
||
585 | |||
586 | switch (pname) { |
||
587 | case GL_MAP_COLOR: |
||
588 | if (ctx->Pixel.MapColorFlag == (param ? GL_TRUE : GL_FALSE)) |
||
589 | return; |
||
590 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
||
591 | ctx->Pixel.MapColorFlag = param ? GL_TRUE : GL_FALSE; |
||
592 | break; |
||
593 | case GL_MAP_STENCIL: |
||
594 | if (ctx->Pixel.MapStencilFlag == (param ? GL_TRUE : GL_FALSE)) |
||
595 | return; |
||
596 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
||
597 | ctx->Pixel.MapStencilFlag = param ? GL_TRUE : GL_FALSE; |
||
598 | break; |
||
599 | case GL_INDEX_SHIFT: |
||
600 | if (ctx->Pixel.IndexShift == (GLint) param) |
||
601 | return; |
||
602 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
||
603 | ctx->Pixel.IndexShift = (GLint) param; |
||
604 | break; |
||
605 | case GL_INDEX_OFFSET: |
||
606 | if (ctx->Pixel.IndexOffset == (GLint) param) |
||
607 | return; |
||
608 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
||
609 | ctx->Pixel.IndexOffset = (GLint) param; |
||
610 | break; |
||
611 | case GL_RED_SCALE: |
||
612 | if (ctx->Pixel.RedScale == param) |
||
613 | return; |
||
614 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
||
615 | ctx->Pixel.RedScale = param; |
||
616 | break; |
||
617 | case GL_RED_BIAS: |
||
618 | if (ctx->Pixel.RedBias == param) |
||
619 | return; |
||
620 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
||
621 | ctx->Pixel.RedBias = param; |
||
622 | break; |
||
623 | case GL_GREEN_SCALE: |
||
624 | if (ctx->Pixel.GreenScale == param) |
||
625 | return; |
||
626 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
||
627 | ctx->Pixel.GreenScale = param; |
||
628 | break; |
||
629 | case GL_GREEN_BIAS: |
||
630 | if (ctx->Pixel.GreenBias == param) |
||
631 | return; |
||
632 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
||
633 | ctx->Pixel.GreenBias = param; |
||
634 | break; |
||
635 | case GL_BLUE_SCALE: |
||
636 | if (ctx->Pixel.BlueScale == param) |
||
637 | return; |
||
638 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
||
639 | ctx->Pixel.BlueScale = param; |
||
640 | break; |
||
641 | case GL_BLUE_BIAS: |
||
642 | if (ctx->Pixel.BlueBias == param) |
||
643 | return; |
||
644 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
||
645 | ctx->Pixel.BlueBias = param; |
||
646 | break; |
||
647 | case GL_ALPHA_SCALE: |
||
648 | if (ctx->Pixel.AlphaScale == param) |
||
649 | return; |
||
650 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
||
651 | ctx->Pixel.AlphaScale = param; |
||
652 | break; |
||
653 | case GL_ALPHA_BIAS: |
||
654 | if (ctx->Pixel.AlphaBias == param) |
||
655 | return; |
||
656 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
||
657 | ctx->Pixel.AlphaBias = param; |
||
658 | break; |
||
659 | case GL_DEPTH_SCALE: |
||
660 | if (ctx->Pixel.DepthScale == param) |
||
661 | return; |
||
662 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
||
663 | ctx->Pixel.DepthScale = param; |
||
664 | break; |
||
665 | case GL_DEPTH_BIAS: |
||
666 | if (ctx->Pixel.DepthBias == param) |
||
667 | return; |
||
668 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
||
669 | ctx->Pixel.DepthBias = param; |
||
670 | break; |
||
671 | case GL_POST_COLOR_MATRIX_RED_SCALE: |
||
672 | if (ctx->Pixel.PostColorMatrixScale[0] == param) |
||
673 | return; |
||
674 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
||
675 | ctx->Pixel.PostColorMatrixScale[0] = param; |
||
676 | break; |
||
677 | case GL_POST_COLOR_MATRIX_RED_BIAS: |
||
678 | if (ctx->Pixel.PostColorMatrixBias[0] == param) |
||
679 | return; |
||
680 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
||
681 | ctx->Pixel.PostColorMatrixBias[0] = param; |
||
682 | break; |
||
683 | case GL_POST_COLOR_MATRIX_GREEN_SCALE: |
||
684 | if (ctx->Pixel.PostColorMatrixScale[1] == param) |
||
685 | return; |
||
686 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
||
687 | ctx->Pixel.PostColorMatrixScale[1] = param; |
||
688 | break; |
||
689 | case GL_POST_COLOR_MATRIX_GREEN_BIAS: |
||
690 | if (ctx->Pixel.PostColorMatrixBias[1] == param) |
||
691 | return; |
||
692 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
||
693 | ctx->Pixel.PostColorMatrixBias[1] = param; |
||
694 | break; |
||
695 | case GL_POST_COLOR_MATRIX_BLUE_SCALE: |
||
696 | if (ctx->Pixel.PostColorMatrixScale[2] == param) |
||
697 | return; |
||
698 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
||
699 | ctx->Pixel.PostColorMatrixScale[2] = param; |
||
700 | break; |
||
701 | case GL_POST_COLOR_MATRIX_BLUE_BIAS: |
||
702 | if (ctx->Pixel.PostColorMatrixBias[2] == param) |
||
703 | return; |
||
704 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
||
705 | ctx->Pixel.PostColorMatrixBias[2] = param; |
||
706 | break; |
||
707 | case GL_POST_COLOR_MATRIX_ALPHA_SCALE: |
||
708 | if (ctx->Pixel.PostColorMatrixScale[3] == param) |
||
709 | return; |
||
710 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
||
711 | ctx->Pixel.PostColorMatrixScale[3] = param; |
||
712 | break; |
||
713 | case GL_POST_COLOR_MATRIX_ALPHA_BIAS: |
||
714 | if (ctx->Pixel.PostColorMatrixBias[3] == param) |
||
715 | return; |
||
716 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
||
717 | ctx->Pixel.PostColorMatrixBias[3] = param; |
||
718 | break; |
||
719 | case GL_POST_CONVOLUTION_RED_SCALE: |
||
720 | if (ctx->Pixel.PostConvolutionScale[0] == param) |
||
721 | return; |
||
722 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
||
723 | ctx->Pixel.PostConvolutionScale[0] = param; |
||
724 | break; |
||
725 | case GL_POST_CONVOLUTION_RED_BIAS: |
||
726 | if (ctx->Pixel.PostConvolutionBias[0] == param) |
||
727 | return; |
||
728 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
||
729 | ctx->Pixel.PostConvolutionBias[0] = param; |
||
730 | break; |
||
731 | case GL_POST_CONVOLUTION_GREEN_SCALE: |
||
732 | if (ctx->Pixel.PostConvolutionScale[1] == param) |
||
733 | return; |
||
734 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
||
735 | ctx->Pixel.PostConvolutionScale[1] = param; |
||
736 | break; |
||
737 | case GL_POST_CONVOLUTION_GREEN_BIAS: |
||
738 | if (ctx->Pixel.PostConvolutionBias[1] == param) |
||
739 | return; |
||
740 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
||
741 | ctx->Pixel.PostConvolutionBias[1] = param; |
||
742 | break; |
||
743 | case GL_POST_CONVOLUTION_BLUE_SCALE: |
||
744 | if (ctx->Pixel.PostConvolutionScale[2] == param) |
||
745 | return; |
||
746 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
||
747 | ctx->Pixel.PostConvolutionScale[2] = param; |
||
748 | break; |
||
749 | case GL_POST_CONVOLUTION_BLUE_BIAS: |
||
750 | if (ctx->Pixel.PostConvolutionBias[2] == param) |
||
751 | return; |
||
752 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
||
753 | ctx->Pixel.PostConvolutionBias[2] = param; |
||
754 | break; |
||
755 | case GL_POST_CONVOLUTION_ALPHA_SCALE: |
||
756 | if (ctx->Pixel.PostConvolutionScale[2] == param) |
||
757 | return; |
||
758 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
||
759 | ctx->Pixel.PostConvolutionScale[2] = param; |
||
760 | break; |
||
761 | case GL_POST_CONVOLUTION_ALPHA_BIAS: |
||
762 | if (ctx->Pixel.PostConvolutionBias[2] == param) |
||
763 | return; |
||
764 | FLUSH_VERTICES(ctx, _NEW_PIXEL); |
||
765 | ctx->Pixel.PostConvolutionBias[2] = param; |
||
766 | break; |
||
767 | default: |
||
768 | _mesa_error( ctx, GL_INVALID_ENUM, "glPixelTransfer(pname)" ); |
||
769 | return; |
||
770 | } |
||
771 | } |
||
772 | |||
773 | |||
774 | void |
||
775 | _mesa_PixelTransferi( GLenum pname, GLint param ) |
||
776 | { |
||
777 | _mesa_PixelTransferf( pname, (GLfloat) param ); |
||
778 | } |
||
779 | |||
780 | |||
781 | |||
782 | /**********************************************************************/ |
||
783 | /***** Pixel processing functions ******/ |
||
784 | /**********************************************************************/ |
||
785 | |||
786 | |||
787 | /* |
||
788 | * Apply scale and bias factors to an array of RGBA pixels. |
||
789 | */ |
||
790 | void |
||
791 | _mesa_scale_and_bias_rgba(const GLcontext *ctx, GLuint n, GLfloat rgba[][4], |
||
792 | GLfloat rScale, GLfloat gScale, |
||
793 | GLfloat bScale, GLfloat aScale, |
||
794 | GLfloat rBias, GLfloat gBias, |
||
795 | GLfloat bBias, GLfloat aBias) |
||
796 | { |
||
797 | if (rScale != 1.0 || rBias != 0.0) { |
||
798 | GLuint i; |
||
799 | for (i = 0; i < n; i++) { |
||
800 | rgba[i][RCOMP] = rgba[i][RCOMP] * rScale + rBias; |
||
801 | } |
||
802 | } |
||
803 | if (gScale != 1.0 || gBias != 0.0) { |
||
804 | GLuint i; |
||
805 | for (i = 0; i < n; i++) { |
||
806 | rgba[i][GCOMP] = rgba[i][GCOMP] * gScale + gBias; |
||
807 | } |
||
808 | } |
||
809 | if (bScale != 1.0 || bBias != 0.0) { |
||
810 | GLuint i; |
||
811 | for (i = 0; i < n; i++) { |
||
812 | rgba[i][BCOMP] = rgba[i][BCOMP] * bScale + bBias; |
||
813 | } |
||
814 | } |
||
815 | if (aScale != 1.0 || aBias != 0.0) { |
||
816 | GLuint i; |
||
817 | for (i = 0; i < n; i++) { |
||
818 | rgba[i][ACOMP] = rgba[i][ACOMP] * aScale + aBias; |
||
819 | } |
||
820 | } |
||
821 | } |
||
822 | |||
823 | |||
824 | /* |
||
825 | * Apply pixel mapping to an array of floating point RGBA pixels. |
||
826 | */ |
||
827 | void |
||
828 | _mesa_map_rgba( const GLcontext *ctx, GLuint n, GLfloat rgba[][4] ) |
||
829 | { |
||
830 | const GLfloat rscale = (GLfloat) (ctx->Pixel.MapRtoRsize - 1); |
||
831 | const GLfloat gscale = (GLfloat) (ctx->Pixel.MapGtoGsize - 1); |
||
832 | const GLfloat bscale = (GLfloat) (ctx->Pixel.MapBtoBsize - 1); |
||
833 | const GLfloat ascale = (GLfloat) (ctx->Pixel.MapAtoAsize - 1); |
||
834 | const GLfloat *rMap = ctx->Pixel.MapRtoR; |
||
835 | const GLfloat *gMap = ctx->Pixel.MapGtoG; |
||
836 | const GLfloat *bMap = ctx->Pixel.MapBtoB; |
||
837 | const GLfloat *aMap = ctx->Pixel.MapAtoA; |
||
838 | GLuint i; |
||
839 | for (i=0;i<n;i++) { |
||
840 | GLfloat r = CLAMP(rgba[i][RCOMP], 0.0F, 1.0F); |
||
841 | GLfloat g = CLAMP(rgba[i][GCOMP], 0.0F, 1.0F); |
||
842 | GLfloat b = CLAMP(rgba[i][BCOMP], 0.0F, 1.0F); |
||
843 | GLfloat a = CLAMP(rgba[i][ACOMP], 0.0F, 1.0F); |
||
844 | rgba[i][RCOMP] = rMap[IROUND(r * rscale)]; |
||
845 | rgba[i][GCOMP] = gMap[IROUND(g * gscale)]; |
||
846 | rgba[i][BCOMP] = bMap[IROUND(b * bscale)]; |
||
847 | rgba[i][ACOMP] = aMap[IROUND(a * ascale)]; |
||
848 | } |
||
849 | } |
||
850 | |||
851 | |||
852 | /* |
||
853 | * Apply the color matrix and post color matrix scaling and biasing. |
||
854 | */ |
||
855 | void |
||
856 | _mesa_transform_rgba(const GLcontext *ctx, GLuint n, GLfloat rgba[][4]) |
||
857 | { |
||
858 | const GLfloat rs = ctx->Pixel.PostColorMatrixScale[0]; |
||
859 | const GLfloat rb = ctx->Pixel.PostColorMatrixBias[0]; |
||
860 | const GLfloat gs = ctx->Pixel.PostColorMatrixScale[1]; |
||
861 | const GLfloat gb = ctx->Pixel.PostColorMatrixBias[1]; |
||
862 | const GLfloat bs = ctx->Pixel.PostColorMatrixScale[2]; |
||
863 | const GLfloat bb = ctx->Pixel.PostColorMatrixBias[2]; |
||
864 | const GLfloat as = ctx->Pixel.PostColorMatrixScale[3]; |
||
865 | const GLfloat ab = ctx->Pixel.PostColorMatrixBias[3]; |
||
866 | const GLfloat *m = ctx->ColorMatrixStack.Top->m; |
||
867 | GLuint i; |
||
868 | for (i = 0; i < n; i++) { |
||
869 | const GLfloat r = rgba[i][RCOMP]; |
||
870 | const GLfloat g = rgba[i][GCOMP]; |
||
871 | const GLfloat b = rgba[i][BCOMP]; |
||
872 | const GLfloat a = rgba[i][ACOMP]; |
||
873 | rgba[i][RCOMP] = (m[0] * r + m[4] * g + m[ 8] * b + m[12] * a) * rs + rb; |
||
874 | rgba[i][GCOMP] = (m[1] * r + m[5] * g + m[ 9] * b + m[13] * a) * gs + gb; |
||
875 | rgba[i][BCOMP] = (m[2] * r + m[6] * g + m[10] * b + m[14] * a) * bs + bb; |
||
876 | rgba[i][ACOMP] = (m[3] * r + m[7] * g + m[11] * b + m[15] * a) * as + ab; |
||
877 | } |
||
878 | } |
||
879 | |||
880 | |||
881 | /* |
||
882 | * Apply a color table lookup to an array of colors. |
||
883 | */ |
||
884 | void |
||
885 | _mesa_lookup_rgba(const struct gl_color_table *table, |
||
886 | GLuint n, GLfloat rgba[][4]) |
||
887 | { |
||
888 | ASSERT(table->FloatTable); |
||
889 | if (!table->Table || table->Size == 0) |
||
890 | return; |
||
891 | |||
892 | switch (table->Format) { |
||
893 | case GL_INTENSITY: |
||
894 | /* replace RGBA with I */ |
||
895 | if (!table->FloatTable) { |
||
896 | const GLint max = table->Size - 1; |
||
897 | const GLfloat scale = (GLfloat) max; |
||
898 | const GLchan *lut = (const GLchan *) table->Table; |
||
899 | GLuint i; |
||
900 | for (i = 0; i < n; i++) { |
||
901 | GLint j = IROUND(rgba[i][RCOMP] * scale); |
||
902 | GLfloat c = CHAN_TO_FLOAT(lut[CLAMP(j, 0, 1)]); |
||
903 | rgba[i][RCOMP] = rgba[i][GCOMP] = |
||
904 | rgba[i][BCOMP] = rgba[i][ACOMP] = c; |
||
905 | } |
||
906 | |||
907 | } |
||
908 | else { |
||
909 | const GLint max = table->Size - 1; |
||
910 | const GLfloat scale = (GLfloat) max; |
||
911 | const GLfloat *lut = (const GLfloat *) table->Table; |
||
912 | GLuint i; |
||
913 | for (i = 0; i < n; i++) { |
||
914 | GLint j = IROUND(rgba[i][RCOMP] * scale); |
||
915 | GLfloat c = lut[CLAMP(j, 0, max)]; |
||
916 | rgba[i][RCOMP] = rgba[i][GCOMP] = |
||
917 | rgba[i][BCOMP] = rgba[i][ACOMP] = c; |
||
918 | } |
||
919 | } |
||
920 | break; |
||
921 | case GL_LUMINANCE: |
||
922 | /* replace RGB with L */ |
||
923 | if (!table->FloatTable) { |
||
924 | const GLint max = table->Size - 1; |
||
925 | const GLfloat scale = (GLfloat) max; |
||
926 | const GLchan *lut = (const GLchan *) table->Table; |
||
927 | GLuint i; |
||
928 | for (i = 0; i < n; i++) { |
||
929 | GLint j = IROUND(rgba[i][RCOMP] * scale); |
||
930 | GLfloat c = CHAN_TO_FLOAT(lut[CLAMP(j, 0, max)]); |
||
931 | rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = c; |
||
932 | } |
||
933 | } |
||
934 | else { |
||
935 | const GLint max = table->Size - 1; |
||
936 | const GLfloat scale = (GLfloat) max; |
||
937 | const GLfloat *lut = (const GLfloat *) table->Table; |
||
938 | GLuint i; |
||
939 | for (i = 0; i < n; i++) { |
||
940 | GLint j = IROUND(rgba[i][RCOMP] * scale); |
||
941 | GLfloat c = lut[CLAMP(j, 0, max)]; |
||
942 | rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = c; |
||
943 | } |
||
944 | } |
||
945 | break; |
||
946 | case GL_ALPHA: |
||
947 | /* replace A with A */ |
||
948 | if (!table->FloatTable) { |
||
949 | const GLint max = table->Size - 1; |
||
950 | const GLfloat scale = (GLfloat) max; |
||
951 | const GLchan *lut = (const GLchan *) table->Table; |
||
952 | GLuint i; |
||
953 | for (i = 0; i < n; i++) { |
||
954 | GLint j = IROUND(rgba[i][ACOMP] * scale); |
||
955 | rgba[i][ACOMP] = CHAN_TO_FLOAT(lut[CLAMP(j, 0, max)]); |
||
956 | } |
||
957 | } |
||
958 | else { |
||
959 | const GLint max = table->Size - 1; |
||
960 | const GLfloat scale = (GLfloat) max; |
||
961 | const GLfloat *lut = (const GLfloat *) table->Table; |
||
962 | GLuint i; |
||
963 | for (i = 0; i < n; i++) { |
||
964 | GLint j = IROUND(rgba[i][ACOMP] * scale); |
||
965 | rgba[i][ACOMP] = lut[CLAMP(j, 0, max)]; |
||
966 | } |
||
967 | } |
||
968 | break; |
||
969 | case GL_LUMINANCE_ALPHA: |
||
970 | /* replace RGBA with LLLA */ |
||
971 | if (!table->FloatTable) { |
||
972 | const GLint max = table->Size - 1; |
||
973 | const GLfloat scale = (GLfloat) max; |
||
974 | const GLchan *lut = (const GLchan *) table->Table; |
||
975 | GLuint i; |
||
976 | for (i = 0; i < n; i++) { |
||
977 | GLint jL = IROUND(rgba[i][RCOMP] * scale); |
||
978 | GLint jA = IROUND(rgba[i][ACOMP] * scale); |
||
979 | GLfloat luminance, alpha; |
||
980 | jL = CLAMP(jL, 0, max); |
||
981 | jA = CLAMP(jA, 0, max); |
||
982 | luminance = CHAN_TO_FLOAT(lut[jL * 2 + 0]); |
||
983 | alpha = CHAN_TO_FLOAT(lut[jA * 2 + 1]); |
||
984 | rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = luminance; |
||
985 | rgba[i][ACOMP] = alpha;; |
||
986 | } |
||
987 | } |
||
988 | else { |
||
989 | const GLint max = table->Size - 1; |
||
990 | const GLfloat scale = (GLfloat) max; |
||
991 | const GLfloat *lut = (const GLfloat *) table->Table; |
||
992 | GLuint i; |
||
993 | for (i = 0; i < n; i++) { |
||
994 | GLint jL = IROUND(rgba[i][RCOMP] * scale); |
||
995 | GLint jA = IROUND(rgba[i][ACOMP] * scale); |
||
996 | GLfloat luminance, alpha; |
||
997 | jL = CLAMP(jL, 0, max); |
||
998 | jA = CLAMP(jA, 0, max); |
||
999 | luminance = lut[jL * 2 + 0]; |
||
1000 | alpha = lut[jA * 2 + 1]; |
||
1001 | rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = luminance; |
||
1002 | rgba[i][ACOMP] = alpha;; |
||
1003 | } |
||
1004 | } |
||
1005 | break; |
||
1006 | case GL_RGB: |
||
1007 | /* replace RGB with RGB */ |
||
1008 | if (!table->FloatTable) { |
||
1009 | const GLint max = table->Size - 1; |
||
1010 | const GLfloat scale = (GLfloat) max; |
||
1011 | const GLchan *lut = (const GLchan *) table->Table; |
||
1012 | GLuint i; |
||
1013 | for (i = 0; i < n; i++) { |
||
1014 | GLint jR = IROUND(rgba[i][RCOMP] * scale); |
||
1015 | GLint jG = IROUND(rgba[i][GCOMP] * scale); |
||
1016 | GLint jB = IROUND(rgba[i][BCOMP] * scale); |
||
1017 | jR = CLAMP(jR, 0, max); |
||
1018 | jG = CLAMP(jG, 0, max); |
||
1019 | jB = CLAMP(jB, 0, max); |
||
1020 | rgba[i][RCOMP] = CHAN_TO_FLOAT(lut[jR * 3 + 0]); |
||
1021 | rgba[i][GCOMP] = CHAN_TO_FLOAT(lut[jG * 3 + 1]); |
||
1022 | rgba[i][BCOMP] = CHAN_TO_FLOAT(lut[jB * 3 + 2]); |
||
1023 | } |
||
1024 | } |
||
1025 | else { |
||
1026 | const GLint max = table->Size - 1; |
||
1027 | const GLfloat scale = (GLfloat) max; |
||
1028 | const GLfloat *lut = (const GLfloat *) table->Table; |
||
1029 | GLuint i; |
||
1030 | for (i = 0; i < n; i++) { |
||
1031 | GLint jR = IROUND(rgba[i][RCOMP] * scale); |
||
1032 | GLint jG = IROUND(rgba[i][GCOMP] * scale); |
||
1033 | GLint jB = IROUND(rgba[i][BCOMP] * scale); |
||
1034 | jR = CLAMP(jR, 0, max); |
||
1035 | jG = CLAMP(jG, 0, max); |
||
1036 | jB = CLAMP(jB, 0, max); |
||
1037 | rgba[i][RCOMP] = lut[jR * 3 + 0]; |
||
1038 | rgba[i][GCOMP] = lut[jG * 3 + 1]; |
||
1039 | rgba[i][BCOMP] = lut[jB * 3 + 2]; |
||
1040 | } |
||
1041 | } |
||
1042 | break; |
||
1043 | case GL_RGBA: |
||
1044 | /* replace RGBA with RGBA */ |
||
1045 | if (!table->FloatTable) { |
||
1046 | const GLint max = table->Size - 1; |
||
1047 | const GLfloat scale = (GLfloat) max; |
||
1048 | const GLchan *lut = (const GLchan *) table->Table; |
||
1049 | GLuint i; |
||
1050 | for (i = 0; i < n; i++) { |
||
1051 | GLint jR = IROUND(rgba[i][RCOMP] * scale); |
||
1052 | GLint jG = IROUND(rgba[i][GCOMP] * scale); |
||
1053 | GLint jB = IROUND(rgba[i][BCOMP] * scale); |
||
1054 | GLint jA = IROUND(rgba[i][ACOMP] * scale); |
||
1055 | jR = CLAMP(jR, 0, max); |
||
1056 | jG = CLAMP(jG, 0, max); |
||
1057 | jB = CLAMP(jB, 0, max); |
||
1058 | jA = CLAMP(jA, 0, max); |
||
1059 | rgba[i][RCOMP] = CHAN_TO_FLOAT(lut[jR * 4 + 0]); |
||
1060 | rgba[i][GCOMP] = CHAN_TO_FLOAT(lut[jG * 4 + 1]); |
||
1061 | rgba[i][BCOMP] = CHAN_TO_FLOAT(lut[jB * 4 + 2]); |
||
1062 | rgba[i][ACOMP] = CHAN_TO_FLOAT(lut[jA * 4 + 3]); |
||
1063 | } |
||
1064 | } |
||
1065 | else { |
||
1066 | const GLint max = table->Size - 1; |
||
1067 | const GLfloat scale = (GLfloat) max; |
||
1068 | const GLfloat *lut = (const GLfloat *) table->Table; |
||
1069 | GLuint i; |
||
1070 | for (i = 0; i < n; i++) { |
||
1071 | GLint jR = IROUND(rgba[i][RCOMP] * scale); |
||
1072 | GLint jG = IROUND(rgba[i][GCOMP] * scale); |
||
1073 | GLint jB = IROUND(rgba[i][BCOMP] * scale); |
||
1074 | GLint jA = IROUND(rgba[i][ACOMP] * scale); |
||
1075 | jR = CLAMP(jR, 0, max); |
||
1076 | jG = CLAMP(jG, 0, max); |
||
1077 | jB = CLAMP(jB, 0, max); |
||
1078 | jA = CLAMP(jA, 0, max); |
||
1079 | rgba[i][RCOMP] = lut[jR * 4 + 0]; |
||
1080 | rgba[i][GCOMP] = lut[jG * 4 + 1]; |
||
1081 | rgba[i][BCOMP] = lut[jB * 4 + 2]; |
||
1082 | rgba[i][ACOMP] = lut[jA * 4 + 3]; |
||
1083 | } |
||
1084 | } |
||
1085 | break; |
||
1086 | default: |
||
1087 | _mesa_problem(NULL, "Bad format in _mesa_lookup_rgba"); |
||
1088 | return; |
||
1089 | } |
||
1090 | } |
||
1091 | |||
1092 | |||
1093 | |||
1094 | /* |
||
1095 | * Apply color index shift and offset to an array of pixels. |
||
1096 | */ |
||
1097 | void |
||
1098 | _mesa_shift_and_offset_ci( const GLcontext *ctx, GLuint n, GLuint indexes[] ) |
||
1099 | { |
||
1100 | GLint shift = ctx->Pixel.IndexShift; |
||
1101 | GLint offset = ctx->Pixel.IndexOffset; |
||
1102 | GLuint i; |
||
1103 | if (shift > 0) { |
||
1104 | for (i=0;i<n;i++) { |
||
1105 | indexes[i] = (indexes[i] << shift) + offset; |
||
1106 | } |
||
1107 | } |
||
1108 | else if (shift < 0) { |
||
1109 | shift = -shift; |
||
1110 | for (i=0;i<n;i++) { |
||
1111 | indexes[i] = (indexes[i] >> shift) + offset; |
||
1112 | } |
||
1113 | } |
||
1114 | else { |
||
1115 | for (i=0;i<n;i++) { |
||
1116 | indexes[i] = indexes[i] + offset; |
||
1117 | } |
||
1118 | } |
||
1119 | } |
||
1120 | |||
1121 | |||
1122 | /* |
||
1123 | * Apply color index mapping to color indexes. |
||
1124 | */ |
||
1125 | void |
||
1126 | _mesa_map_ci( const GLcontext *ctx, GLuint n, GLuint index[] ) |
||
1127 | { |
||
1128 | GLuint mask = ctx->Pixel.MapItoIsize - 1; |
||
1129 | GLuint i; |
||
1130 | for (i=0;i<n;i++) { |
||
1131 | index[i] = ctx->Pixel.MapItoI[ index[i] & mask ]; |
||
1132 | } |
||
1133 | } |
||
1134 | |||
1135 | |||
1136 | /* |
||
1137 | * Map color indexes to rgba values. |
||
1138 | */ |
||
1139 | void |
||
1140 | _mesa_map_ci_to_rgba_chan( const GLcontext *ctx, GLuint n, |
||
1141 | const GLuint index[], GLchan rgba[][4] ) |
||
1142 | { |
||
1143 | #if CHAN_BITS == 8 |
||
1144 | GLuint rmask = ctx->Pixel.MapItoRsize - 1; |
||
1145 | GLuint gmask = ctx->Pixel.MapItoGsize - 1; |
||
1146 | GLuint bmask = ctx->Pixel.MapItoBsize - 1; |
||
1147 | GLuint amask = ctx->Pixel.MapItoAsize - 1; |
||
1148 | const GLubyte *rMap = ctx->Pixel.MapItoR8; |
||
1149 | const GLubyte *gMap = ctx->Pixel.MapItoG8; |
||
1150 | const GLubyte *bMap = ctx->Pixel.MapItoB8; |
||
1151 | const GLubyte *aMap = ctx->Pixel.MapItoA8; |
||
1152 | GLuint i; |
||
1153 | for (i=0;i<n;i++) { |
||
1154 | rgba[i][RCOMP] = rMap[index[i] & rmask]; |
||
1155 | rgba[i][GCOMP] = gMap[index[i] & gmask]; |
||
1156 | rgba[i][BCOMP] = bMap[index[i] & bmask]; |
||
1157 | rgba[i][ACOMP] = aMap[index[i] & amask]; |
||
1158 | } |
||
1159 | #else |
||
1160 | GLuint rmask = ctx->Pixel.MapItoRsize - 1; |
||
1161 | GLuint gmask = ctx->Pixel.MapItoGsize - 1; |
||
1162 | GLuint bmask = ctx->Pixel.MapItoBsize - 1; |
||
1163 | GLuint amask = ctx->Pixel.MapItoAsize - 1; |
||
1164 | const GLfloat *rMap = ctx->Pixel.MapItoR; |
||
1165 | const GLfloat *gMap = ctx->Pixel.MapItoG; |
||
1166 | const GLfloat *bMap = ctx->Pixel.MapItoB; |
||
1167 | const GLfloat *aMap = ctx->Pixel.MapItoA; |
||
1168 | GLuint i; |
||
1169 | for (i=0;i<n;i++) { |
||
1170 | CLAMPED_FLOAT_TO_CHAN(rgba[i][RCOMP], rMap[index[i] & rmask]); |
||
1171 | CLAMPED_FLOAT_TO_CHAN(rgba[i][GCOMP], gMap[index[i] & gmask]); |
||
1172 | CLAMPED_FLOAT_TO_CHAN(rgba[i][BCOMP], bMap[index[i] & bmask]); |
||
1173 | CLAMPED_FLOAT_TO_CHAN(rgba[i][ACOMP], aMap[index[i] & amask]); |
||
1174 | } |
||
1175 | #endif |
||
1176 | } |
||
1177 | |||
1178 | |||
1179 | /* |
||
1180 | * Map color indexes to float rgba values. |
||
1181 | */ |
||
1182 | void |
||
1183 | _mesa_map_ci_to_rgba( const GLcontext *ctx, GLuint n, |
||
1184 | const GLuint index[], GLfloat rgba[][4] ) |
||
1185 | { |
||
1186 | GLuint rmask = ctx->Pixel.MapItoRsize - 1; |
||
1187 | GLuint gmask = ctx->Pixel.MapItoGsize - 1; |
||
1188 | GLuint bmask = ctx->Pixel.MapItoBsize - 1; |
||
1189 | GLuint amask = ctx->Pixel.MapItoAsize - 1; |
||
1190 | const GLfloat *rMap = ctx->Pixel.MapItoR; |
||
1191 | const GLfloat *gMap = ctx->Pixel.MapItoG; |
||
1192 | const GLfloat *bMap = ctx->Pixel.MapItoB; |
||
1193 | const GLfloat *aMap = ctx->Pixel.MapItoA; |
||
1194 | GLuint i; |
||
1195 | for (i=0;i<n;i++) { |
||
1196 | rgba[i][RCOMP] = rMap[index[i] & rmask]; |
||
1197 | rgba[i][GCOMP] = gMap[index[i] & gmask]; |
||
1198 | rgba[i][BCOMP] = bMap[index[i] & bmask]; |
||
1199 | rgba[i][ACOMP] = aMap[index[i] & amask]; |
||
1200 | } |
||
1201 | } |
||
1202 | |||
1203 | |||
1204 | /* |
||
1205 | * Map 8-bit color indexes to rgb values. |
||
1206 | */ |
||
1207 | void |
||
1208 | _mesa_map_ci8_to_rgba( const GLcontext *ctx, GLuint n, const GLubyte index[], |
||
1209 | GLchan rgba[][4] ) |
||
1210 | { |
||
1211 | #if CHAN_BITS == 8 |
||
1212 | GLuint rmask = ctx->Pixel.MapItoRsize - 1; |
||
1213 | GLuint gmask = ctx->Pixel.MapItoGsize - 1; |
||
1214 | GLuint bmask = ctx->Pixel.MapItoBsize - 1; |
||
1215 | GLuint amask = ctx->Pixel.MapItoAsize - 1; |
||
1216 | const GLubyte *rMap = ctx->Pixel.MapItoR8; |
||
1217 | const GLubyte *gMap = ctx->Pixel.MapItoG8; |
||
1218 | const GLubyte *bMap = ctx->Pixel.MapItoB8; |
||
1219 | const GLubyte *aMap = ctx->Pixel.MapItoA8; |
||
1220 | GLuint i; |
||
1221 | for (i=0;i<n;i++) { |
||
1222 | rgba[i][RCOMP] = rMap[index[i] & rmask]; |
||
1223 | rgba[i][GCOMP] = gMap[index[i] & gmask]; |
||
1224 | rgba[i][BCOMP] = bMap[index[i] & bmask]; |
||
1225 | rgba[i][ACOMP] = aMap[index[i] & amask]; |
||
1226 | } |
||
1227 | #else |
||
1228 | GLuint rmask = ctx->Pixel.MapItoRsize - 1; |
||
1229 | GLuint gmask = ctx->Pixel.MapItoGsize - 1; |
||
1230 | GLuint bmask = ctx->Pixel.MapItoBsize - 1; |
||
1231 | GLuint amask = ctx->Pixel.MapItoAsize - 1; |
||
1232 | const GLfloat *rMap = ctx->Pixel.MapItoR; |
||
1233 | const GLfloat *gMap = ctx->Pixel.MapItoG; |
||
1234 | const GLfloat *bMap = ctx->Pixel.MapItoB; |
||
1235 | const GLfloat *aMap = ctx->Pixel.MapItoA; |
||
1236 | GLuint i; |
||
1237 | for (i=0;i<n;i++) { |
||
1238 | CLAMPED_FLOAT_TO_CHAN(rgba[i][RCOMP], rMap[index[i] & rmask]); |
||
1239 | CLAMPED_FLOAT_TO_CHAN(rgba[i][GCOMP], gMap[index[i] & gmask]); |
||
1240 | CLAMPED_FLOAT_TO_CHAN(rgba[i][BCOMP], bMap[index[i] & bmask]); |
||
1241 | CLAMPED_FLOAT_TO_CHAN(rgba[i][ACOMP], aMap[index[i] & amask]); |
||
1242 | } |
||
1243 | #endif |
||
1244 | } |
||
1245 | |||
1246 | |||
1247 | void |
||
1248 | _mesa_shift_and_offset_stencil( const GLcontext *ctx, GLuint n, |
||
1249 | GLstencil stencil[] ) |
||
1250 | { |
||
1251 | GLuint i; |
||
1252 | GLint shift = ctx->Pixel.IndexShift; |
||
1253 | GLint offset = ctx->Pixel.IndexOffset; |
||
1254 | if (shift > 0) { |
||
1255 | for (i=0;i<n;i++) { |
||
1256 | stencil[i] = (stencil[i] << shift) + offset; |
||
1257 | } |
||
1258 | } |
||
1259 | else if (shift < 0) { |
||
1260 | shift = -shift; |
||
1261 | for (i=0;i<n;i++) { |
||
1262 | stencil[i] = (stencil[i] >> shift) + offset; |
||
1263 | } |
||
1264 | } |
||
1265 | else { |
||
1266 | for (i=0;i<n;i++) { |
||
1267 | stencil[i] = stencil[i] + offset; |
||
1268 | } |
||
1269 | } |
||
1270 | |||
1271 | } |
||
1272 | |||
1273 | |||
1274 | void |
||
1275 | _mesa_map_stencil( const GLcontext *ctx, GLuint n, GLstencil stencil[] ) |
||
1276 | { |
||
1277 | GLuint mask = ctx->Pixel.MapStoSsize - 1; |
||
1278 | GLuint i; |
||
1279 | for (i=0;i<n;i++) { |
||
1280 | stencil[i] = ctx->Pixel.MapStoS[ stencil[i] & mask ]; |
||
1281 | } |
||
1282 | } |
||
1283 | |||
1284 | |||
1285 | |||
1286 | /* |
||
1287 | * This function converts an array of GLchan colors to GLfloat colors. |
||
1288 | * Most importantly, it undoes the non-uniform quantization of pixel |
||
1289 | * values introduced when we convert shallow (< 8 bit) pixel values |
||
1290 | * to GLubytes in the ctx->Driver.ReadRGBASpan() functions. |
||
1291 | * This fixes a number of OpenGL conformance failures when running on |
||
1292 | * 16bpp displays, for example. |
||
1293 | */ |
||
1294 | void |
||
1295 | _mesa_chan_to_float_span(const GLcontext *ctx, GLuint n, |
||
1296 | CONST GLchan rgba[][4], GLfloat rgbaf[][4]) |
||
1297 | { |
||
1298 | #if CHAN_TYPE == GL_FLOAT |
||
1299 | MEMCPY(rgbaf, rgba, n * 4 * sizeof(GLfloat)); |
||
1300 | #else |
||
1301 | const GLuint rShift = CHAN_BITS - ctx->Visual.redBits; |
||
1302 | const GLuint gShift = CHAN_BITS - ctx->Visual.greenBits; |
||
1303 | const GLuint bShift = CHAN_BITS - ctx->Visual.blueBits; |
||
1304 | GLuint aShift; |
||
1305 | const GLfloat rScale = 1.0F / (GLfloat) ((1 << ctx->Visual.redBits ) - 1); |
||
1306 | const GLfloat gScale = 1.0F / (GLfloat) ((1 << ctx->Visual.greenBits) - 1); |
||
1307 | const GLfloat bScale = 1.0F / (GLfloat) ((1 << ctx->Visual.blueBits ) - 1); |
||
1308 | GLfloat aScale; |
||
1309 | GLuint i; |
||
1310 | |||
1311 | if (ctx->Visual.alphaBits > 0) { |
||
1312 | aShift = CHAN_BITS - ctx->Visual.alphaBits; |
||
1313 | aScale = 1.0F / (GLfloat) ((1 << ctx->Visual.alphaBits) - 1); |
||
1314 | } |
||
1315 | else { |
||
1316 | aShift = 0; |
||
1317 | aScale = 1.0F / CHAN_MAXF; |
||
1318 | } |
||
1319 | |||
1320 | for (i = 0; i < n; i++) { |
||
1321 | const GLint r = rgba[i][RCOMP] >> rShift; |
||
1322 | const GLint g = rgba[i][GCOMP] >> gShift; |
||
1323 | const GLint b = rgba[i][BCOMP] >> bShift; |
||
1324 | const GLint a = rgba[i][ACOMP] >> aShift; |
||
1325 | rgbaf[i][RCOMP] = (GLfloat) r * rScale; |
||
1326 | rgbaf[i][GCOMP] = (GLfloat) g * gScale; |
||
1327 | rgbaf[i][BCOMP] = (GLfloat) b * bScale; |
||
1328 | rgbaf[i][ACOMP] = (GLfloat) a * aScale; |
||
1329 | } |
||
1330 | #endif |
||
1331 | } |