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72 | giacomo | 1 | /* $Id: osmesa.c,v 1.2 2003-03-13 12:20:29 giacomo Exp $ */ |
59 | pj | 2 | |
3 | /* |
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4 | * Mesa 3-D graphics library |
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5 | * Version: 5.0 |
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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 | |||
28 | /* |
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29 | * Off-Screen Mesa rendering / Rendering into client memory space |
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30 | * |
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31 | * Note on thread safety: this driver is thread safe. All |
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32 | * functions are reentrant. The notion of current context is |
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33 | * managed by the core _mesa_make_current() and _mesa_get_current_context() |
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34 | * functions. Those functions are thread-safe. |
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35 | */ |
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36 | |||
37 | |||
38 | #include "glheader.h" |
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39 | #include "GL/osmesa.h" |
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40 | #include "buffers.h" |
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41 | #include "context.h" |
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42 | #include "colormac.h" |
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43 | #include "depth.h" |
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44 | #include "extensions.h" |
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45 | #include "imports.h" |
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46 | #include "macros.h" |
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47 | #include "matrix.h" |
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48 | #include "mmath.h" |
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49 | #include "mtypes.h" |
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50 | #include "texformat.h" |
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51 | #include "texstore.h" |
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52 | #include "array_cache/acache.h" |
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53 | #include "swrast/swrast.h" |
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54 | #include "swrast_setup/swrast_setup.h" |
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55 | #include "swrast/s_context.h" |
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56 | #include "swrast/s_depth.h" |
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57 | #include "swrast/s_lines.h" |
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58 | #include "swrast/s_triangle.h" |
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59 | #include "tnl/tnl.h" |
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60 | #include "tnl/t_context.h" |
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61 | #include "tnl/t_pipeline.h" |
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62 | |||
63 | |||
64 | |||
65 | /* |
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66 | * This is the OS/Mesa context struct. |
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67 | * Notice how it includes a GLcontext. By doing this we're mimicking |
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68 | * C++ inheritance/derivation. |
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69 | * Later, we can cast a GLcontext pointer into an OSMesaContext pointer |
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70 | * or vice versa. |
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71 | */ |
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72 | struct osmesa_context { |
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73 | GLcontext gl_ctx; /* The core GL/Mesa context */ |
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74 | GLvisual *gl_visual; /* Describes the buffers */ |
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75 | GLframebuffer *gl_buffer; /* Depth, stencil, accum, etc buffers */ |
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76 | GLenum format; /* either GL_RGBA or GL_COLOR_INDEX */ |
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77 | void *buffer; /* the image buffer */ |
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78 | GLint width, height; /* size of image buffer */ |
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79 | GLint rowlength; /* number of pixels per row */ |
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80 | GLint userRowLength; /* user-specified number of pixels per row */ |
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81 | GLint rshift, gshift; /* bit shifts for RGBA formats */ |
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82 | GLint bshift, ashift; |
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83 | GLint rInd, gInd, bInd, aInd;/* index offsets for RGBA formats */ |
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84 | GLchan *rowaddr[MAX_HEIGHT]; /* address of first pixel in each image row */ |
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85 | GLboolean yup; /* TRUE -> Y increases upward */ |
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86 | /* FALSE -> Y increases downward */ |
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87 | }; |
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88 | |||
89 | |||
90 | |||
91 | /* A forward declaration: */ |
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92 | static void osmesa_update_state( GLcontext *ctx, GLuint newstate ); |
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93 | static void osmesa_register_swrast_functions( GLcontext *ctx ); |
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94 | |||
95 | |||
96 | |||
97 | #define OSMESA_CONTEXT(ctx) ((OSMesaContext) (ctx->DriverCtx)) |
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98 | |||
99 | |||
100 | |||
101 | /**********************************************************************/ |
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102 | /***** Public Functions *****/ |
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103 | /**********************************************************************/ |
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104 | |||
105 | |||
106 | /* |
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107 | * Create an Off-Screen Mesa rendering context. The only attribute needed is |
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108 | * an RGBA vs Color-Index mode flag. |
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109 | * |
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110 | * Input: format - either GL_RGBA or GL_COLOR_INDEX |
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111 | * sharelist - specifies another OSMesaContext with which to share |
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112 | * display lists. NULL indicates no sharing. |
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113 | * Return: an OSMesaContext or 0 if error |
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114 | */ |
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115 | GLAPI OSMesaContext GLAPIENTRY |
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116 | OSMesaCreateContext( GLenum format, OSMesaContext sharelist ) |
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117 | { |
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118 | return OSMesaCreateContextExt(format, DEFAULT_SOFTWARE_DEPTH_BITS, |
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119 | 8, 16, sharelist); |
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120 | } |
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121 | |||
122 | |||
123 | |||
124 | /* |
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125 | * New in Mesa 3.5 |
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126 | * |
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127 | * Create context and specify size of ancillary buffers. |
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128 | */ |
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129 | GLAPI OSMesaContext GLAPIENTRY |
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130 | OSMesaCreateContextExt( GLenum format, GLint depthBits, GLint stencilBits, |
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131 | GLint accumBits, OSMesaContext sharelist ) |
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132 | { |
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133 | OSMesaContext osmesa; |
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134 | GLint rshift, gshift, bshift, ashift; |
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135 | GLint rind, gind, bind, aind; |
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136 | GLint indexBits = 0, redBits = 0, greenBits = 0, blueBits = 0, alphaBits =0; |
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137 | GLboolean rgbmode; |
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138 | const GLuint i4 = 1; |
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139 | const GLubyte *i1 = (GLubyte *) &i4; |
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140 | const GLint little_endian = *i1; |
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141 | |||
142 | rind = gind = bind = aind = 0; |
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143 | if (format==OSMESA_COLOR_INDEX) { |
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144 | indexBits = 8; |
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145 | rshift = gshift = bshift = ashift = 0; |
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146 | rgbmode = GL_FALSE; |
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147 | } |
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148 | else if (format==OSMESA_RGBA) { |
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149 | indexBits = 0; |
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150 | redBits = CHAN_BITS; |
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151 | greenBits = CHAN_BITS; |
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152 | blueBits = CHAN_BITS; |
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153 | alphaBits = CHAN_BITS; |
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154 | rind = 0; |
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155 | gind = 1; |
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156 | bind = 2; |
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157 | aind = 3; |
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158 | if (little_endian) { |
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159 | rshift = 0; |
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160 | gshift = 8; |
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161 | bshift = 16; |
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162 | ashift = 24; |
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163 | } |
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164 | else { |
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165 | rshift = 24; |
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166 | gshift = 16; |
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167 | bshift = 8; |
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168 | ashift = 0; |
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169 | } |
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170 | rgbmode = GL_TRUE; |
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171 | } |
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172 | else if (format==OSMESA_BGRA) { |
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173 | indexBits = 0; |
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174 | redBits = CHAN_BITS; |
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175 | greenBits = CHAN_BITS; |
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176 | blueBits = CHAN_BITS; |
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177 | alphaBits = CHAN_BITS; |
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178 | bind = 0; |
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179 | gind = 1; |
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180 | rind = 2; |
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181 | aind = 3; |
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182 | if (little_endian) { |
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183 | bshift = 0; |
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184 | gshift = 8; |
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185 | rshift = 16; |
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186 | ashift = 24; |
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187 | } |
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188 | else { |
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189 | bshift = 24; |
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190 | gshift = 16; |
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191 | rshift = 8; |
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192 | ashift = 0; |
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193 | } |
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194 | rgbmode = GL_TRUE; |
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195 | } |
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196 | else if (format==OSMESA_ARGB) { |
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197 | indexBits = 0; |
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198 | redBits = CHAN_BITS; |
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199 | greenBits = CHAN_BITS; |
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200 | blueBits = CHAN_BITS; |
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201 | alphaBits = CHAN_BITS; |
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202 | aind = 0; |
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203 | rind = 1; |
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204 | gind = 2; |
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205 | bind = 3; |
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206 | if (little_endian) { |
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207 | ashift = 0; |
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208 | rshift = 8; |
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209 | gshift = 16; |
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210 | bshift = 24; |
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211 | } |
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212 | else { |
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213 | ashift = 24; |
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214 | rshift = 16; |
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215 | gshift = 8; |
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216 | bshift = 0; |
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217 | } |
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218 | rgbmode = GL_TRUE; |
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219 | } |
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220 | else if (format==OSMESA_RGB) { |
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221 | indexBits = 0; |
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222 | redBits = CHAN_BITS; |
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223 | greenBits = CHAN_BITS; |
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224 | blueBits = CHAN_BITS; |
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225 | alphaBits = 0; |
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226 | bshift = 0; |
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227 | gshift = 8; |
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228 | rshift = 16; |
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229 | ashift = 24; |
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230 | rind = 0; |
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231 | gind = 1; |
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232 | bind = 2; |
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233 | rgbmode = GL_TRUE; |
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234 | } |
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235 | else if (format==OSMESA_BGR) { |
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236 | indexBits = 0; |
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237 | redBits = CHAN_BITS; |
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238 | greenBits = CHAN_BITS; |
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239 | blueBits = CHAN_BITS; |
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240 | alphaBits = 0; |
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241 | bshift = 0; |
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242 | gshift = 8; |
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243 | rshift = 16; |
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244 | ashift = 24; |
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245 | rind = 2; |
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246 | gind = 1; |
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247 | bind = 0; |
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248 | rgbmode = GL_TRUE; |
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249 | } |
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250 | else if (format==OSMESA_RGB_565) { |
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251 | indexBits = 0; |
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252 | redBits = 5; |
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253 | greenBits = 6; |
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254 | blueBits = 5; |
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255 | alphaBits = 0; |
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256 | rshift = 11; |
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257 | gshift = 5; |
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258 | bshift = 0; |
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259 | ashift = 0; |
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260 | rind = 0; /* not used */ |
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261 | gind = 0; |
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262 | bind = 0; |
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263 | rgbmode = GL_TRUE; |
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264 | } |
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265 | else { |
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266 | return NULL; |
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267 | } |
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268 | |||
269 | |||
270 | osmesa = (OSMesaContext) CALLOC_STRUCT(osmesa_context); |
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271 | if (osmesa) { |
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272 | osmesa->gl_visual = _mesa_create_visual( rgbmode, |
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273 | GL_FALSE, /* double buffer */ |
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274 | GL_FALSE, /* stereo */ |
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275 | redBits, |
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276 | greenBits, |
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277 | blueBits, |
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278 | alphaBits, |
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279 | indexBits, |
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280 | depthBits, |
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281 | stencilBits, |
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282 | accumBits, |
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283 | accumBits, |
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284 | accumBits, |
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285 | alphaBits ? accumBits : 0, |
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286 | 1 /* num samples */ |
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287 | ); |
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288 | if (!osmesa->gl_visual) { |
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289 | FREE(osmesa); |
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290 | return NULL; |
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291 | } |
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292 | |||
293 | if (!_mesa_initialize_context(&osmesa->gl_ctx, |
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294 | osmesa->gl_visual, |
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295 | sharelist ? &sharelist->gl_ctx |
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296 | : (GLcontext *) NULL, |
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297 | (void *) osmesa, |
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298 | GL_FALSE)) { |
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299 | _mesa_destroy_visual( osmesa->gl_visual ); |
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300 | FREE(osmesa); |
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301 | return NULL; |
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302 | } |
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303 | |||
304 | _mesa_enable_sw_extensions(&(osmesa->gl_ctx)); |
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305 | _mesa_enable_1_3_extensions(&(osmesa->gl_ctx)); |
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306 | _mesa_enable_1_4_extensions(&(osmesa->gl_ctx)); |
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307 | |||
308 | osmesa->gl_buffer = _mesa_create_framebuffer( osmesa->gl_visual, |
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309 | (GLboolean) ( osmesa->gl_visual->depthBits > 0 ), |
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310 | (GLboolean) ( osmesa->gl_visual->stencilBits > 0 ), |
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311 | (GLboolean) ( osmesa->gl_visual->accumRedBits > 0 ), |
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312 | GL_FALSE /* s/w alpha */ ); |
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313 | |||
314 | if (!osmesa->gl_buffer) { |
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315 | _mesa_destroy_visual( osmesa->gl_visual ); |
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316 | _mesa_free_context_data( &osmesa->gl_ctx ); |
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317 | FREE(osmesa); |
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318 | return NULL; |
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319 | } |
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320 | osmesa->format = format; |
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321 | osmesa->buffer = NULL; |
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322 | osmesa->width = 0; |
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323 | osmesa->height = 0; |
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324 | osmesa->userRowLength = 0; |
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325 | osmesa->rowlength = 0; |
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326 | osmesa->yup = GL_TRUE; |
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327 | osmesa->rshift = rshift; |
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328 | osmesa->gshift = gshift; |
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329 | osmesa->bshift = bshift; |
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330 | osmesa->ashift = ashift; |
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331 | osmesa->rInd = rind; |
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332 | osmesa->gInd = gind; |
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333 | osmesa->bInd = bind; |
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334 | osmesa->aInd = aind; |
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335 | |||
336 | |||
337 | /* Initialize the software rasterizer and helper modules. |
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338 | */ |
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339 | { |
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340 | GLcontext *ctx = &osmesa->gl_ctx; |
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341 | |||
342 | _swrast_CreateContext( ctx ); |
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343 | _ac_CreateContext( ctx ); |
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344 | _tnl_CreateContext( ctx ); |
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345 | _swsetup_CreateContext( ctx ); |
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346 | |||
347 | _swsetup_Wakeup( ctx ); |
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348 | osmesa_register_swrast_functions( ctx ); |
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349 | } |
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350 | } |
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351 | return osmesa; |
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352 | } |
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353 | |||
354 | |||
355 | |||
356 | |||
357 | /* |
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358 | * Destroy an Off-Screen Mesa rendering context. |
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359 | * |
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360 | * Input: ctx - the context to destroy |
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361 | */ |
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362 | GLAPI void GLAPIENTRY OSMesaDestroyContext( OSMesaContext ctx ) |
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363 | { |
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364 | if (ctx) { |
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365 | _swsetup_DestroyContext( &ctx->gl_ctx ); |
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366 | _tnl_DestroyContext( &ctx->gl_ctx ); |
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367 | _ac_DestroyContext( &ctx->gl_ctx ); |
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368 | _swrast_DestroyContext( &ctx->gl_ctx ); |
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369 | |||
370 | _mesa_destroy_visual( ctx->gl_visual ); |
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371 | _mesa_destroy_framebuffer( ctx->gl_buffer ); |
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372 | _mesa_free_context_data( &ctx->gl_ctx ); |
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373 | FREE( ctx ); |
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374 | } |
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375 | } |
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376 | |||
377 | |||
378 | |||
379 | /* |
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380 | * Recompute the values of the context's rowaddr array. |
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381 | */ |
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382 | static void compute_row_addresses( OSMesaContext ctx ) |
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383 | { |
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384 | GLint bytesPerPixel, bytesPerRow, i; |
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385 | GLubyte *origin = (GLubyte *) ctx->buffer; |
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386 | |||
387 | if (ctx->format == OSMESA_COLOR_INDEX) { |
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388 | /* CI mode */ |
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389 | bytesPerPixel = 1 * sizeof(GLchan); |
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390 | } |
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391 | else if ((ctx->format == OSMESA_RGB) || (ctx->format == OSMESA_BGR)) { |
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392 | /* RGB mode */ |
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393 | bytesPerPixel = 3 * sizeof(GLchan); |
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394 | } |
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395 | else if (ctx->format == OSMESA_RGB_565) { |
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396 | /* 5/6/5 RGB pixel in 16 bits */ |
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397 | bytesPerPixel = 2; |
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398 | } |
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399 | else { |
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400 | /* RGBA mode */ |
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401 | bytesPerPixel = 4 * sizeof(GLchan); |
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402 | } |
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403 | |||
404 | bytesPerRow = ctx->rowlength * bytesPerPixel; |
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405 | |||
406 | if (ctx->yup) { |
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407 | /* Y=0 is bottom line of window */ |
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408 | for (i = 0; i < MAX_HEIGHT; i++) { |
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409 | ctx->rowaddr[i] = (GLchan *) ((GLubyte *) origin + i * bytesPerRow); |
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410 | } |
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411 | } |
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412 | else { |
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413 | /* Y=0 is top line of window */ |
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414 | for (i = 0; i < MAX_HEIGHT; i++) { |
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415 | GLint j = ctx->height - i - 1; |
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416 | ctx->rowaddr[i] = (GLchan *) ((GLubyte *) origin + j * bytesPerRow); |
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417 | } |
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418 | } |
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419 | } |
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420 | |||
421 | |||
422 | /* |
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423 | * Bind an OSMesaContext to an image buffer. The image buffer is just a |
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424 | * block of memory which the client provides. Its size must be at least |
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425 | * as large as width*height*sizeof(type). Its address should be a multiple |
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426 | * of 4 if using RGBA mode. |
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427 | * |
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428 | * Image data is stored in the order of glDrawPixels: row-major order |
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429 | * with the lower-left image pixel stored in the first array position |
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430 | * (ie. bottom-to-top). |
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431 | * |
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432 | * If the context's viewport hasn't been initialized yet, it will now be |
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433 | * initialized to (0,0,width,height). |
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434 | * |
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435 | * Input: ctx - the rendering context |
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436 | * buffer - the image buffer memory |
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437 | * type - data type for pixel components |
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438 | * Normally, only GL_UNSIGNED_BYTE and GL_UNSIGNED_SHORT_5_6_5 |
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439 | * are supported. But if Mesa's been compiled with CHAN_BITS==16 |
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440 | * then type must be GL_UNSIGNED_SHORT. And if Mesa's been build |
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441 | * with CHAN_BITS==32 then type must be GL_FLOAT. |
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442 | * width, height - size of image buffer in pixels, at least 1 |
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443 | * Return: GL_TRUE if success, GL_FALSE if error because of invalid ctx, |
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444 | * invalid buffer address, invalid type, width<1, height<1, |
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445 | * width>internal limit or height>internal limit. |
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446 | */ |
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447 | GLAPI GLboolean GLAPIENTRY |
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448 | OSMesaMakeCurrent( OSMesaContext ctx, void *buffer, GLenum type, |
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449 | GLsizei width, GLsizei height ) |
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450 | { |
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451 | if (!ctx || !buffer || |
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452 | width < 1 || height < 1 || |
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453 | width > MAX_WIDTH || height > MAX_HEIGHT) { |
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454 | return GL_FALSE; |
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455 | } |
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456 | |||
457 | if (ctx->format == OSMESA_RGB_565) { |
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458 | if (type != GL_UNSIGNED_SHORT_5_6_5) |
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459 | return GL_FALSE; |
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460 | } |
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461 | else if (type != CHAN_TYPE) { |
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462 | return GL_FALSE; |
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463 | } |
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464 | |||
465 | osmesa_update_state( &ctx->gl_ctx, 0 ); |
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466 | _mesa_make_current( &ctx->gl_ctx, ctx->gl_buffer ); |
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467 | |||
468 | ctx->buffer = buffer; |
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469 | ctx->width = width; |
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470 | ctx->height = height; |
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471 | if (ctx->userRowLength) |
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472 | ctx->rowlength = ctx->userRowLength; |
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473 | else |
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474 | ctx->rowlength = width; |
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475 | |||
476 | compute_row_addresses( ctx ); |
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477 | |||
478 | /* init viewport */ |
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479 | if (ctx->gl_ctx.Viewport.Width == 0) { |
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480 | /* initialize viewport and scissor box to buffer size */ |
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481 | _mesa_Viewport( 0, 0, width, height ); |
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482 | ctx->gl_ctx.Scissor.Width = width; |
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483 | ctx->gl_ctx.Scissor.Height = height; |
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484 | } |
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485 | else { |
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486 | /* this will make ensure we recognize the new buffer size */ |
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487 | _mesa_ResizeBuffersMESA(); |
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488 | } |
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489 | |||
490 | /* Added by Gerk Huisma: */ |
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491 | _tnl_MakeCurrent( &ctx->gl_ctx, ctx->gl_ctx.DrawBuffer, |
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492 | ctx->gl_ctx.ReadBuffer ); |
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493 | |||
494 | return GL_TRUE; |
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495 | } |
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496 | |||
497 | |||
498 | |||
499 | GLAPI OSMesaContext GLAPIENTRY OSMesaGetCurrentContext( void ) |
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500 | { |
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501 | GLcontext *ctx = _mesa_get_current_context(); |
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502 | if (ctx) |
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503 | return (OSMesaContext) ctx; |
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504 | else |
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505 | return NULL; |
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506 | } |
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507 | |||
508 | |||
509 | |||
510 | GLAPI void GLAPIENTRY OSMesaPixelStore( GLint pname, GLint value ) |
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511 | { |
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512 | OSMesaContext ctx = OSMesaGetCurrentContext(); |
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513 | |||
514 | switch (pname) { |
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515 | case OSMESA_ROW_LENGTH: |
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516 | if (value<0) { |
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517 | _mesa_error( &ctx->gl_ctx, GL_INVALID_VALUE, |
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518 | "OSMesaPixelStore(value)" ); |
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519 | return; |
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520 | } |
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521 | ctx->userRowLength = value; |
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522 | ctx->rowlength = value; |
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523 | break; |
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524 | case OSMESA_Y_UP: |
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525 | ctx->yup = value ? GL_TRUE : GL_FALSE; |
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526 | break; |
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527 | default: |
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528 | _mesa_error( &ctx->gl_ctx, GL_INVALID_ENUM, "OSMesaPixelStore(pname)" ); |
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529 | return; |
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530 | } |
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531 | |||
532 | compute_row_addresses( ctx ); |
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533 | } |
||
534 | |||
535 | |||
536 | GLAPI void GLAPIENTRY OSMesaGetIntegerv( GLint pname, GLint *value ) |
||
537 | { |
||
538 | OSMesaContext ctx = OSMesaGetCurrentContext(); |
||
539 | |||
540 | switch (pname) { |
||
541 | case OSMESA_WIDTH: |
||
542 | *value = ctx->width; |
||
543 | return; |
||
544 | case OSMESA_HEIGHT: |
||
545 | *value = ctx->height; |
||
546 | return; |
||
547 | case OSMESA_FORMAT: |
||
548 | *value = ctx->format; |
||
549 | return; |
||
550 | case OSMESA_TYPE: |
||
551 | *value = CHAN_TYPE; |
||
552 | return; |
||
553 | case OSMESA_ROW_LENGTH: |
||
554 | *value = ctx->rowlength; |
||
555 | return; |
||
556 | case OSMESA_Y_UP: |
||
557 | *value = ctx->yup; |
||
558 | return; |
||
559 | case OSMESA_MAX_WIDTH: |
||
560 | *value = MAX_WIDTH; |
||
561 | return; |
||
562 | case OSMESA_MAX_HEIGHT: |
||
563 | *value = MAX_HEIGHT; |
||
564 | return; |
||
565 | default: |
||
566 | _mesa_error(&ctx->gl_ctx, GL_INVALID_ENUM, "OSMesaGetIntergerv(pname)"); |
||
567 | return; |
||
568 | } |
||
569 | } |
||
570 | |||
571 | /* |
||
572 | * Return the depth buffer associated with an OSMesa context. |
||
573 | * Input: c - the OSMesa context |
||
574 | * Output: width, height - size of buffer in pixels |
||
575 | * bytesPerValue - bytes per depth value (2 or 4) |
||
576 | * buffer - pointer to depth buffer values |
||
577 | * Return: GL_TRUE or GL_FALSE to indicate success or failure. |
||
578 | */ |
||
579 | GLAPI GLboolean GLAPIENTRY |
||
580 | OSMesaGetDepthBuffer( OSMesaContext c, GLint *width, GLint *height, |
||
581 | GLint *bytesPerValue, void **buffer ) |
||
582 | { |
||
583 | if ((!c->gl_buffer) || (!c->gl_buffer->DepthBuffer)) { |
||
584 | *width = 0; |
||
585 | *height = 0; |
||
586 | *bytesPerValue = 0; |
||
587 | *buffer = 0; |
||
588 | return GL_FALSE; |
||
589 | } |
||
590 | else { |
||
591 | *width = c->gl_buffer->Width; |
||
592 | *height = c->gl_buffer->Height; |
||
593 | if (c->gl_visual->depthBits <= 16) |
||
594 | *bytesPerValue = sizeof(GLushort); |
||
595 | else |
||
596 | *bytesPerValue = sizeof(GLuint); |
||
597 | *buffer = c->gl_buffer->DepthBuffer; |
||
598 | return GL_TRUE; |
||
599 | } |
||
600 | } |
||
601 | |||
602 | /* |
||
603 | * Return the color buffer associated with an OSMesa context. |
||
604 | * Input: c - the OSMesa context |
||
605 | * Output: width, height - size of buffer in pixels |
||
606 | * format - the pixel format (OSMESA_FORMAT) |
||
607 | * buffer - pointer to color buffer values |
||
608 | * Return: GL_TRUE or GL_FALSE to indicate success or failure. |
||
609 | */ |
||
610 | GLAPI GLboolean GLAPIENTRY |
||
611 | OSMesaGetColorBuffer( OSMesaContext c, GLint *width, |
||
612 | GLint *height, GLint *format, void **buffer ) |
||
613 | { |
||
614 | if (!c->buffer) { |
||
615 | *width = 0; |
||
616 | *height = 0; |
||
617 | *format = 0; |
||
618 | *buffer = 0; |
||
619 | return GL_FALSE; |
||
620 | } |
||
621 | else { |
||
622 | *width = c->width; |
||
623 | *height = c->height; |
||
624 | *format = c->format; |
||
625 | *buffer = c->buffer; |
||
626 | return GL_TRUE; |
||
627 | } |
||
628 | } |
||
629 | |||
630 | |||
631 | |||
632 | struct name_address { |
||
633 | const char *Name; |
||
634 | GLvoid *Address; |
||
635 | }; |
||
636 | |||
637 | static struct name_address functions[] = { |
||
638 | { "OSMesaCreateContext", (void *) OSMesaCreateContext }, |
||
639 | { "OSMesaCreateContextExt", (void *) OSMesaCreateContextExt }, |
||
640 | { "OSMesaDestroyContext", (void *) OSMesaDestroyContext }, |
||
641 | { "OSMesaMakeCurrent", (void *) OSMesaMakeCurrent }, |
||
642 | { "OSMesaGetCurrentContext", (void *) OSMesaGetCurrentContext }, |
||
643 | { "OSMesaPixelsStore", (void *) OSMesaPixelStore }, |
||
644 | { "OSMesaGetIntegerv", (void *) OSMesaGetIntegerv }, |
||
645 | { "OSMesaGetDepthBuffer", (void *) OSMesaGetDepthBuffer }, |
||
646 | { "OSMesaGetColorBuffer", (void *) OSMesaGetColorBuffer }, |
||
647 | { "OSMesaGetProcAddress", (void *) OSMesaGetProcAddress }, |
||
648 | { NULL, NULL } |
||
649 | }; |
||
650 | |||
651 | GLAPI void * GLAPIENTRY |
||
652 | OSMesaGetProcAddress( const char *funcName ) |
||
653 | { |
||
654 | int i; |
||
655 | for (i = 0; functions[i].Name; i++) { |
||
656 | if (_mesa_strcmp(functions[i].Name, funcName) == 0) |
||
657 | return (void *) functions[i].Address; |
||
658 | } |
||
659 | return (void *) _glapi_get_proc_address(funcName); |
||
660 | } |
||
661 | |||
662 | |||
663 | /**********************************************************************/ |
||
664 | /*** Device Driver Functions ***/ |
||
665 | /**********************************************************************/ |
||
666 | |||
667 | |||
668 | /* |
||
669 | * Useful macros: |
||
670 | */ |
||
671 | |||
672 | #if CHAN_TYPE == GL_FLOAT |
||
673 | #define PACK_RGBA(DST, R, G, B, A) \ |
||
674 | do { \ |
||
675 | (DST)[0] = MAX2( R, 0.0F ); \ |
||
676 | (DST)[1] = MAX2( G, 0.0F ); \ |
||
677 | (DST)[2] = MAX2( B, 0.0F ); \ |
||
678 | (DST)[3] = CLAMP(A, 0.0F, CHAN_MAXF);\ |
||
679 | } while (0) |
||
680 | #else |
||
681 | #define PACK_RGBA(DST, R, G, B, A) \ |
||
682 | do { \ |
||
683 | (DST)[osmesa->rInd] = R; \ |
||
684 | (DST)[osmesa->gInd] = G; \ |
||
685 | (DST)[osmesa->bInd] = B; \ |
||
686 | (DST)[osmesa->aInd] = A; \ |
||
687 | } while (0) |
||
688 | #endif |
||
689 | |||
690 | #define PACK_RGB(DST, R, G, B) \ |
||
691 | do { \ |
||
692 | (DST)[0] = R; \ |
||
693 | (DST)[1] = G; \ |
||
694 | (DST)[2] = B; \ |
||
695 | } while (0) |
||
696 | |||
697 | #define PACK_BGR(DST, R, G, B) \ |
||
698 | do { \ |
||
699 | (DST)[0] = B; \ |
||
700 | (DST)[1] = G; \ |
||
701 | (DST)[2] = R; \ |
||
702 | } while (0) |
||
703 | |||
704 | #define PACK_RGB_565(DST, R, G, B) \ |
||
705 | do { \ |
||
706 | (DST) = (((int) (R) << 8) & 0xf800) | (((int) (G) << 3) & 0x7e0) | ((int) (B) >> 3);\ |
||
707 | } while (0) |
||
708 | |||
709 | |||
710 | #define UNPACK_RED(P) ( (P)[osmesa->rInd] ) |
||
711 | #define UNPACK_GREEN(P) ( (P)[osmesa->gInd] ) |
||
712 | #define UNPACK_BLUE(P) ( (P)[osmesa->bInd] ) |
||
713 | #define UNPACK_ALPHA(P) ( (P)[osmesa->aInd] ) |
||
714 | |||
715 | |||
716 | #define PIXELADDR1(X,Y) (osmesa->rowaddr[Y] + (X)) |
||
717 | #define PIXELADDR2(X,Y) (osmesa->rowaddr[Y] + 2 * (X)) |
||
718 | #define PIXELADDR3(X,Y) (osmesa->rowaddr[Y] + 3 * (X)) |
||
719 | #define PIXELADDR4(X,Y) (osmesa->rowaddr[Y] + 4 * (X)) |
||
720 | |||
721 | |||
722 | |||
723 | static void set_buffer( GLcontext *ctx, GLframebuffer *buffer, GLuint bufferBit ) |
||
724 | { |
||
725 | /* separate read buffer not supported */ |
||
726 | ASSERT(buffer == ctx->DrawBuffer); |
||
727 | ASSERT(bufferBit == FRONT_LEFT_BIT); |
||
728 | } |
||
729 | |||
730 | |||
731 | static void mesa_clear( GLcontext *ctx, GLbitfield mask, GLboolean all, |
||
732 | GLint x, GLint y, GLint width, GLint height ) |
||
733 | { |
||
734 | OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
735 | const GLuint *colorMask = (GLuint *) &ctx->Color.ColorMask; |
||
736 | |||
737 | /* sanity check - we only have a front-left buffer */ |
||
738 | ASSERT((mask & (DD_FRONT_RIGHT_BIT | DD_BACK_LEFT_BIT | DD_BACK_RIGHT_BIT)) == 0); |
||
739 | if (*colorMask == 0xffffffff && ctx->Color.IndexMask == 0xffffffff) { |
||
740 | if (mask & DD_FRONT_LEFT_BIT) { |
||
741 | if (osmesa->format == OSMESA_COLOR_INDEX) { |
||
742 | if (all) { |
||
743 | /* Clear whole CI buffer */ |
||
744 | #if CHAN_TYPE == GL_UNSIGNED_BYTE |
||
745 | MEMSET(osmesa->buffer, ctx->Color.ClearIndex, |
||
746 | osmesa->rowlength * osmesa->height); |
||
747 | #else |
||
748 | const GLint n = osmesa->rowlength * osmesa->height; |
||
749 | GLchan *buffer = (GLchan *) osmesa->buffer; |
||
750 | GLint i; |
||
751 | for (i = 0; i < n; i ++) { |
||
752 | buffer[i] = ctx->Color.ClearIndex; |
||
753 | } |
||
754 | #endif |
||
755 | } |
||
756 | else { |
||
757 | /* Clear part of CI buffer */ |
||
758 | const GLchan clearIndex = (GLchan) ctx->Color.ClearIndex; |
||
759 | GLint i, j; |
||
760 | for (i = 0; i < height; i++) { |
||
761 | GLchan *ptr1 = PIXELADDR1(x, (y + i)); |
||
762 | for (j = 0; j < width; j++) { |
||
763 | *ptr1++ = clearIndex; |
||
764 | } |
||
765 | } |
||
766 | } |
||
767 | } |
||
768 | else if (osmesa->format == OSMESA_RGB) { |
||
769 | GLchan r, g, b; |
||
770 | CLAMPED_FLOAT_TO_CHAN(r, ctx->Color.ClearColor[0]); |
||
771 | CLAMPED_FLOAT_TO_CHAN(g, ctx->Color.ClearColor[1]); |
||
772 | CLAMPED_FLOAT_TO_CHAN(b, ctx->Color.ClearColor[2]); |
||
773 | if (all) { |
||
774 | /* Clear whole RGB buffer */ |
||
775 | GLuint n = osmesa->rowlength * osmesa->height; |
||
776 | GLchan *ptr3 = (GLchan *) osmesa->buffer; |
||
777 | GLuint i; |
||
778 | for (i = 0; i < n; i++) { |
||
779 | PACK_RGB(ptr3, r, g, b); |
||
780 | ptr3 += 3; |
||
781 | } |
||
782 | } |
||
783 | else { |
||
784 | /* Clear part of RGB buffer */ |
||
785 | GLint i, j; |
||
786 | for (i = 0; i < height; i++) { |
||
787 | GLchan *ptr3 = PIXELADDR3(x, (y + i)); |
||
788 | for (j = 0; j < width; j++) { |
||
789 | PACK_RGB(ptr3, r, g, b); |
||
790 | ptr3 += 3; |
||
791 | } |
||
792 | } |
||
793 | } |
||
794 | } |
||
795 | else if (osmesa->format == OSMESA_BGR) { |
||
796 | GLchan r, g, b; |
||
797 | CLAMPED_FLOAT_TO_CHAN(r, ctx->Color.ClearColor[0]); |
||
798 | CLAMPED_FLOAT_TO_CHAN(g, ctx->Color.ClearColor[1]); |
||
799 | CLAMPED_FLOAT_TO_CHAN(b, ctx->Color.ClearColor[2]); |
||
800 | if (all) { |
||
801 | /* Clear whole RGB buffer */ |
||
802 | const GLint n = osmesa->rowlength * osmesa->height; |
||
803 | GLchan *ptr3 = (GLchan *) osmesa->buffer; |
||
804 | GLint i; |
||
805 | for (i = 0; i < n; i++) { |
||
806 | PACK_BGR(ptr3, r, g, b); |
||
807 | ptr3 += 3; |
||
808 | } |
||
809 | } |
||
810 | else { |
||
811 | /* Clear part of RGB buffer */ |
||
812 | GLint i, j; |
||
813 | for (i = 0; i < height; i++) { |
||
814 | GLchan *ptr3 = PIXELADDR3(x, (y + i)); |
||
815 | for (j = 0; j < width; j++) { |
||
816 | PACK_BGR(ptr3, r, g, b); |
||
817 | ptr3 += 3; |
||
818 | } |
||
819 | } |
||
820 | } |
||
821 | } |
||
822 | else if (osmesa->format == OSMESA_RGB_565) { |
||
823 | GLushort clearPixel; |
||
824 | GLchan r, g, b; |
||
825 | CLAMPED_FLOAT_TO_CHAN(r, ctx->Color.ClearColor[0]); |
||
826 | CLAMPED_FLOAT_TO_CHAN(g, ctx->Color.ClearColor[1]); |
||
827 | CLAMPED_FLOAT_TO_CHAN(b, ctx->Color.ClearColor[2]); |
||
828 | PACK_RGB_565(clearPixel, r, g, b); |
||
829 | if (all) { |
||
830 | /* Clear whole RGB buffer */ |
||
831 | const GLuint n = osmesa->rowlength * osmesa->height; |
||
832 | GLushort *ptr2 = (GLushort *) osmesa->buffer; |
||
833 | GLuint i; |
||
834 | for (i = 0; i < n; i++) { |
||
835 | *ptr2 = clearPixel; |
||
836 | ptr2++; |
||
837 | } |
||
838 | } |
||
839 | else { |
||
840 | /* clear scissored region */ |
||
841 | GLint i, j; |
||
842 | for (i = 0; i < height; i++) { |
||
843 | GLushort *ptr2 = (GLushort *) PIXELADDR2(x, (y + i)); |
||
844 | for (j = 0; j < width; j++) { |
||
845 | *ptr2 = clearPixel; |
||
846 | ptr2++; |
||
847 | } |
||
848 | } |
||
849 | } |
||
850 | } |
||
851 | else { |
||
852 | #if CHAN_TYPE == GL_UNSIGNED_BYTE |
||
853 | /* 4-byte pixel value */ |
||
854 | GLuint clearPixel; |
||
855 | GLchan *clr = (GLchan *) &clearPixel; |
||
856 | CLAMPED_FLOAT_TO_CHAN(clr[osmesa->rInd], ctx->Color.ClearColor[0]); |
||
857 | CLAMPED_FLOAT_TO_CHAN(clr[osmesa->gInd], ctx->Color.ClearColor[1]); |
||
858 | CLAMPED_FLOAT_TO_CHAN(clr[osmesa->bInd], ctx->Color.ClearColor[2]); |
||
859 | CLAMPED_FLOAT_TO_CHAN(clr[osmesa->aInd], ctx->Color.ClearColor[3]); |
||
860 | if (all) { |
||
861 | /* Clear whole RGBA buffer */ |
||
862 | const GLuint n = osmesa->rowlength * osmesa->height; |
||
863 | GLuint *ptr4 = (GLuint *) osmesa->buffer; |
||
864 | GLuint i; |
||
865 | if (clearPixel) { |
||
866 | for (i = 0; i < n; i++) { |
||
867 | *ptr4++ = clearPixel; |
||
868 | } |
||
869 | } |
||
870 | else { |
||
871 | _mesa_bzero(ptr4, n * sizeof(GLuint)); |
||
872 | } |
||
873 | } |
||
874 | else { |
||
875 | /* Clear part of RGBA buffer */ |
||
876 | GLint i, j; |
||
877 | for (i = 0; i < height; i++) { |
||
878 | GLuint *ptr4 = (GLuint *) PIXELADDR4(x, (y + i)); |
||
879 | for (j = 0; j < width; j++) { |
||
880 | *ptr4++ = clearPixel; |
||
881 | } |
||
882 | } |
||
883 | } |
||
884 | #else |
||
885 | GLchan r, g, b, a; |
||
886 | CLAMPED_FLOAT_TO_CHAN(r, ctx->Color.ClearColor[0]); |
||
887 | CLAMPED_FLOAT_TO_CHAN(g, ctx->Color.ClearColor[1]); |
||
888 | CLAMPED_FLOAT_TO_CHAN(b, ctx->Color.ClearColor[2]); |
||
889 | CLAMPED_FLOAT_TO_CHAN(a, ctx->Color.ClearColor[3]); |
||
890 | if (all) { |
||
891 | /* Clear whole RGBA buffer */ |
||
892 | const GLuint n = osmesa->rowlength * osmesa->height; |
||
893 | GLchan *p = (GLchan *) osmesa->buffer; |
||
894 | GLuint i; |
||
895 | for (i = 0; i < n; i++) { |
||
896 | PACK_RGBA(p, r, g, b, a); |
||
897 | p += 4; |
||
898 | } |
||
899 | } |
||
900 | else { |
||
901 | /* Clear part of RGBA buffer */ |
||
902 | GLint i, j; |
||
903 | for (i = 0; i < height; i++) { |
||
904 | GLchan *p = PIXELADDR4(x, (y + i)); |
||
905 | for (j = 0; j < width; j++) { |
||
906 | PACK_RGBA(p, r, g, b, a); |
||
907 | p += 4; |
||
908 | } |
||
909 | } |
||
910 | } |
||
911 | |||
912 | #endif |
||
913 | } |
||
914 | mask &= ~DD_FRONT_LEFT_BIT; |
||
915 | } |
||
916 | } |
||
917 | |||
918 | if (mask) |
||
919 | _swrast_Clear( ctx, mask, all, x, y, width, height ); |
||
920 | } |
||
921 | |||
922 | |||
923 | |||
924 | static void buffer_size( GLframebuffer *buffer, GLuint *width, GLuint *height ) |
||
925 | { |
||
926 | /* don't use GET_CURRENT_CONTEXT(ctx) here - it's a problem on Windows */ |
||
927 | GLcontext *ctx = (GLcontext *) _glapi_get_context(); |
||
928 | (void) buffer; |
||
929 | if (ctx) { |
||
930 | OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
931 | *width = osmesa->width; |
||
932 | *height = osmesa->height; |
||
933 | } |
||
934 | } |
||
935 | |||
936 | |||
937 | /**********************************************************************/ |
||
938 | /***** Read/write spans/arrays of RGBA pixels *****/ |
||
939 | /**********************************************************************/ |
||
940 | |||
941 | /* Write RGBA pixels to an RGBA (or permuted) buffer. */ |
||
942 | static void |
||
943 | write_rgba_span( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
944 | CONST GLchan rgba[][4], const GLubyte mask[] ) |
||
945 | { |
||
946 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
947 | GLchan *p = PIXELADDR4(x, y); |
||
948 | GLuint i; |
||
949 | if (mask) { |
||
950 | for (i = 0; i < n; i++, p += 4) { |
||
951 | if (mask[i]) { |
||
952 | PACK_RGBA(p, rgba[i][RCOMP], rgba[i][GCOMP], |
||
953 | rgba[i][BCOMP], rgba[i][ACOMP]); |
||
954 | } |
||
955 | } |
||
956 | } |
||
957 | else { |
||
958 | for (i = 0; i < n; i++, p += 4) { |
||
959 | PACK_RGBA(p, rgba[i][RCOMP], rgba[i][GCOMP], |
||
960 | rgba[i][BCOMP], rgba[i][ACOMP]); |
||
961 | } |
||
962 | } |
||
963 | } |
||
964 | |||
965 | |||
966 | /* Write RGBA pixels to an RGBA buffer. This is the fastest span-writer. */ |
||
967 | static void |
||
968 | write_rgba_span_rgba( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
969 | CONST GLchan rgba[][4], const GLubyte mask[] ) |
||
970 | { |
||
971 | OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
972 | GLuint *ptr4 = (GLuint *) PIXELADDR4(x, y); |
||
973 | const GLuint *rgba4 = (const GLuint *) rgba; |
||
974 | GLuint i; |
||
975 | ASSERT(CHAN_TYPE == GL_UNSIGNED_BYTE); |
||
976 | if (mask) { |
||
977 | for (i = 0; i < n; i++) { |
||
978 | if (mask[i]) { |
||
979 | ptr4[i] = rgba4[i]; |
||
980 | } |
||
981 | } |
||
982 | } |
||
983 | else { |
||
984 | MEMCPY( ptr4, rgba4, n * 4 ); |
||
985 | } |
||
986 | } |
||
987 | |||
988 | |||
989 | /* Write RGB pixels to an RGBA (or permuted) buffer. */ |
||
990 | static void |
||
991 | write_rgb_span( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
992 | CONST GLchan rgb[][3], const GLubyte mask[] ) |
||
993 | { |
||
994 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
995 | GLchan *p = PIXELADDR4(x, y); |
||
996 | GLuint i; |
||
997 | if (mask) { |
||
998 | for (i = 0; i < n; i++, p+=4) { |
||
999 | if (mask[i]) { |
||
1000 | PACK_RGBA(p, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP], CHAN_MAX); |
||
1001 | } |
||
1002 | } |
||
1003 | } |
||
1004 | else { |
||
1005 | for (i = 0; i < n; i++, p+=4) { |
||
1006 | PACK_RGBA(p, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP], CHAN_MAX); |
||
1007 | } |
||
1008 | } |
||
1009 | } |
||
1010 | |||
1011 | |||
1012 | |||
1013 | static void |
||
1014 | write_monocolor_span( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
1015 | const GLchan color[4], const GLubyte mask[] ) |
||
1016 | { |
||
1017 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1018 | GLchan *p = PIXELADDR4(x, y); |
||
1019 | GLuint i; |
||
1020 | for (i = 0; i < n; i++, p += 4) { |
||
1021 | if (mask[i]) { |
||
1022 | PACK_RGBA(p, color[RCOMP], color[GCOMP], color[BCOMP], color[ACOMP]); |
||
1023 | } |
||
1024 | } |
||
1025 | } |
||
1026 | |||
1027 | |||
1028 | |||
1029 | static void |
||
1030 | write_rgba_pixels( const GLcontext *ctx, GLuint n, |
||
1031 | const GLint x[], const GLint y[], |
||
1032 | CONST GLchan rgba[][4], const GLubyte mask[] ) |
||
1033 | { |
||
1034 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1035 | GLuint i; |
||
1036 | for (i = 0; i < n; i++) { |
||
1037 | if (mask[i]) { |
||
1038 | GLchan *p = PIXELADDR4(x[i], y[i]); |
||
1039 | PACK_RGBA(p, rgba[i][RCOMP], rgba[i][GCOMP], |
||
1040 | rgba[i][BCOMP], rgba[i][ACOMP]); |
||
1041 | } |
||
1042 | } |
||
1043 | } |
||
1044 | |||
1045 | |||
1046 | |||
1047 | static void |
||
1048 | write_monocolor_pixels( const GLcontext *ctx, GLuint n, |
||
1049 | const GLint x[], const GLint y[], |
||
1050 | const GLchan color[4], const GLubyte mask[] ) |
||
1051 | { |
||
1052 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1053 | GLuint i; |
||
1054 | for (i = 0; i < n; i++) { |
||
1055 | if (mask[i]) { |
||
1056 | GLchan *p = PIXELADDR4(x[i], y[i]); |
||
1057 | PACK_RGBA(p, color[RCOMP], color[GCOMP], color[BCOMP], color[ACOMP]); |
||
1058 | } |
||
1059 | } |
||
1060 | } |
||
1061 | |||
1062 | |||
1063 | static void |
||
1064 | read_rgba_span( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
1065 | GLchan rgba[][4] ) |
||
1066 | { |
||
1067 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1068 | GLuint i; |
||
1069 | GLchan *p = PIXELADDR4(x, y); |
||
1070 | for (i = 0; i < n; i++, p += 4) { |
||
1071 | rgba[i][RCOMP] = UNPACK_RED(p); |
||
1072 | rgba[i][GCOMP] = UNPACK_GREEN(p); |
||
1073 | rgba[i][BCOMP] = UNPACK_BLUE(p); |
||
1074 | rgba[i][ACOMP] = UNPACK_ALPHA(p); |
||
1075 | } |
||
1076 | } |
||
1077 | |||
1078 | |||
1079 | /* Read RGBA pixels from an RGBA buffer */ |
||
1080 | static void |
||
1081 | read_rgba_span_rgba( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
1082 | GLchan rgba[][4] ) |
||
1083 | { |
||
1084 | OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1085 | GLuint *ptr4 = (GLuint *) PIXELADDR4(x, y); |
||
1086 | MEMCPY( rgba, ptr4, n * 4 * sizeof(GLchan) ); |
||
1087 | } |
||
1088 | |||
1089 | |||
1090 | static void |
||
1091 | read_rgba_pixels( const GLcontext *ctx, |
||
1092 | GLuint n, const GLint x[], const GLint y[], |
||
1093 | GLchan rgba[][4], const GLubyte mask[] ) |
||
1094 | { |
||
1095 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1096 | GLuint i; |
||
1097 | for (i = 0; i < n; i++) { |
||
1098 | if (mask[i]) { |
||
1099 | const GLchan *p = PIXELADDR4(x[i], y[i]); |
||
1100 | rgba[i][RCOMP] = UNPACK_RED(p); |
||
1101 | rgba[i][GCOMP] = UNPACK_GREEN(p); |
||
1102 | rgba[i][BCOMP] = UNPACK_BLUE(p); |
||
1103 | rgba[i][ACOMP] = UNPACK_ALPHA(p); |
||
1104 | } |
||
1105 | } |
||
1106 | } |
||
1107 | |||
1108 | /**********************************************************************/ |
||
1109 | /***** 3 byte RGB pixel support funcs *****/ |
||
1110 | /**********************************************************************/ |
||
1111 | |||
1112 | /* Write RGBA pixels to an RGB buffer. */ |
||
1113 | static void |
||
1114 | write_rgba_span_RGB( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
1115 | CONST GLchan rgba[][4], const GLubyte mask[] ) |
||
1116 | { |
||
1117 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1118 | GLchan *p = PIXELADDR3(x, y); |
||
1119 | GLuint i; |
||
1120 | if (mask) { |
||
1121 | for (i = 0; i < n; i++, p += 3) { |
||
1122 | if (mask[i]) { |
||
1123 | PACK_RGB(p, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]); |
||
1124 | } |
||
1125 | } |
||
1126 | } |
||
1127 | else { |
||
1128 | for (i = 0; i < n; i++, p += 3) { |
||
1129 | PACK_RGB(p, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]); |
||
1130 | } |
||
1131 | } |
||
1132 | } |
||
1133 | |||
1134 | /* Write RGBA pixels to an BGR buffer. */ |
||
1135 | static void |
||
1136 | write_rgba_span_BGR( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
1137 | CONST GLchan rgba[][4], const GLubyte mask[] ) |
||
1138 | { |
||
1139 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1140 | GLchan *p = PIXELADDR3(x, y); |
||
1141 | GLuint i; |
||
1142 | if (mask) { |
||
1143 | for (i = 0; i < n; i++, p += 3) { |
||
1144 | if (mask[i]) { |
||
1145 | PACK_BGR(p, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]); |
||
1146 | } |
||
1147 | } |
||
1148 | } |
||
1149 | else { |
||
1150 | for (i = 0; i < n; i++, p += 3) { |
||
1151 | PACK_BGR(p, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]); |
||
1152 | } |
||
1153 | } |
||
1154 | } |
||
1155 | |||
1156 | /* Write RGB pixels to an RGB buffer. */ |
||
1157 | static void |
||
1158 | write_rgb_span_RGB( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
1159 | CONST GLchan rgb[][3], const GLubyte mask[] ) |
||
1160 | { |
||
1161 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1162 | GLchan *p = PIXELADDR3(x, y); |
||
1163 | GLuint i; |
||
1164 | if (mask) { |
||
1165 | for (i = 0; i < n; i++, p += 3) { |
||
1166 | if (mask[i]) { |
||
1167 | PACK_RGB(p, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP]); |
||
1168 | } |
||
1169 | } |
||
1170 | } |
||
1171 | else { |
||
1172 | for (i = 0; i < n; i++, p += 3) { |
||
1173 | PACK_RGB(p, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP]); |
||
1174 | } |
||
1175 | } |
||
1176 | } |
||
1177 | |||
1178 | /* Write RGB pixels to an BGR buffer. */ |
||
1179 | static void |
||
1180 | write_rgb_span_BGR( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
1181 | CONST GLchan rgb[][3], const GLubyte mask[] ) |
||
1182 | { |
||
1183 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1184 | GLchan *p = PIXELADDR3(x, y); |
||
1185 | GLuint i; |
||
1186 | if (mask) { |
||
1187 | for (i = 0; i < n; i++, p += 3) { |
||
1188 | if (mask[i]) { |
||
1189 | PACK_BGR(p, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP]); |
||
1190 | } |
||
1191 | } |
||
1192 | } |
||
1193 | else { |
||
1194 | for (i = 0; i < n; i++, p += 3) { |
||
1195 | PACK_BGR(p, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP]); |
||
1196 | } |
||
1197 | } |
||
1198 | } |
||
1199 | |||
1200 | |||
1201 | static void |
||
1202 | write_monocolor_span_RGB( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
1203 | const GLchan color[4], const GLubyte mask[] ) |
||
1204 | { |
||
1205 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1206 | GLchan *p = PIXELADDR3(x, y); |
||
1207 | GLuint i; |
||
1208 | for (i = 0; i < n; i++, p += 3) { |
||
1209 | if (mask[i]) { |
||
1210 | PACK_RGB(p, color[RCOMP], color[GCOMP], color[BCOMP]); |
||
1211 | } |
||
1212 | } |
||
1213 | } |
||
1214 | |||
1215 | static void |
||
1216 | write_monocolor_span_BGR( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
1217 | const GLchan color[4], const GLubyte mask[] ) |
||
1218 | { |
||
1219 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1220 | GLchan *p = PIXELADDR3(x, y); |
||
1221 | GLuint i; |
||
1222 | for (i = 0; i < n; i++, p += 3) { |
||
1223 | if (mask[i]) { |
||
1224 | PACK_BGR(p, color[RCOMP], color[GCOMP], color[BCOMP]); |
||
1225 | } |
||
1226 | } |
||
1227 | } |
||
1228 | |||
1229 | static void |
||
1230 | write_rgba_pixels_RGB( const GLcontext *ctx, GLuint n, |
||
1231 | const GLint x[], const GLint y[], |
||
1232 | CONST GLchan rgba[][4], const GLubyte mask[] ) |
||
1233 | { |
||
1234 | const OSMesaContext osmesa = (const OSMesaContext) ctx; |
||
1235 | GLuint i; |
||
1236 | for (i = 0; i < n; i++) { |
||
1237 | if (mask[i]) { |
||
1238 | GLchan *p = PIXELADDR3(x[i], y[i]); |
||
1239 | PACK_RGB(p, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]); |
||
1240 | } |
||
1241 | } |
||
1242 | } |
||
1243 | |||
1244 | static void |
||
1245 | write_rgba_pixels_BGR( const GLcontext *ctx, GLuint n, |
||
1246 | const GLint x[], const GLint y[], |
||
1247 | CONST GLchan rgba[][4], const GLubyte mask[] ) |
||
1248 | { |
||
1249 | const OSMesaContext osmesa = (const OSMesaContext) ctx; |
||
1250 | GLuint i; |
||
1251 | for (i = 0; i < n; i++) { |
||
1252 | if (mask[i]) { |
||
1253 | GLchan *p = PIXELADDR3(x[i], y[i]); |
||
1254 | PACK_BGR(p, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]); |
||
1255 | } |
||
1256 | } |
||
1257 | } |
||
1258 | |||
1259 | static void |
||
1260 | write_monocolor_pixels_RGB( const GLcontext *ctx, |
||
1261 | GLuint n, const GLint x[], const GLint y[], |
||
1262 | const GLchan color[4], const GLubyte mask[] ) |
||
1263 | { |
||
1264 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1265 | GLuint i; |
||
1266 | for (i = 0; i < n; i++) { |
||
1267 | if (mask[i]) { |
||
1268 | GLchan *p = PIXELADDR3(x[i], y[i]); |
||
1269 | PACK_RGB(p, color[RCOMP], color[GCOMP], color[BCOMP]); |
||
1270 | } |
||
1271 | } |
||
1272 | } |
||
1273 | |||
1274 | static void |
||
1275 | write_monocolor_pixels_BGR( const GLcontext *ctx, |
||
1276 | GLuint n, const GLint x[], const GLint y[], |
||
1277 | const GLchan color[4], const GLubyte mask[] ) |
||
1278 | { |
||
1279 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1280 | GLuint i; |
||
1281 | for (i = 0; i < n; i++) { |
||
1282 | if (mask[i]) { |
||
1283 | GLchan *p = PIXELADDR3(x[i], y[i]); |
||
1284 | PACK_BGR(p, color[RCOMP], color[GCOMP], color[BCOMP]); |
||
1285 | } |
||
1286 | } |
||
1287 | } |
||
1288 | |||
1289 | static void |
||
1290 | read_rgba_span3( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
1291 | GLchan rgba[][4] ) |
||
1292 | { |
||
1293 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1294 | GLuint i; |
||
1295 | const GLchan *p = PIXELADDR3(x, y); |
||
1296 | for (i = 0; i < n; i++, p += 3) { |
||
1297 | rgba[i][RCOMP] = UNPACK_RED(p); |
||
1298 | rgba[i][GCOMP] = UNPACK_GREEN(p); |
||
1299 | rgba[i][BCOMP] = UNPACK_BLUE(p); |
||
1300 | rgba[i][ACOMP] = CHAN_MAX; |
||
1301 | } |
||
1302 | } |
||
1303 | |||
1304 | static void |
||
1305 | read_rgba_pixels3( const GLcontext *ctx, |
||
1306 | GLuint n, const GLint x[], const GLint y[], |
||
1307 | GLchan rgba[][4], const GLubyte mask[] ) |
||
1308 | { |
||
1309 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1310 | GLuint i; |
||
1311 | for (i = 0; i < n; i++) { |
||
1312 | if (mask[i]) { |
||
1313 | const GLchan *p = PIXELADDR3(x[i], y[i]); |
||
1314 | rgba[i][RCOMP] = UNPACK_RED(p); |
||
1315 | rgba[i][GCOMP] = UNPACK_GREEN(p); |
||
1316 | rgba[i][BCOMP] = UNPACK_BLUE(p); |
||
1317 | rgba[i][ACOMP] = CHAN_MAX; |
||
1318 | } |
||
1319 | } |
||
1320 | } |
||
1321 | |||
1322 | |||
1323 | /**********************************************************************/ |
||
1324 | /***** 2 byte RGB pixel support funcs *****/ |
||
1325 | /**********************************************************************/ |
||
1326 | |||
1327 | /* Write RGBA pixels to an RGB_565 buffer. */ |
||
1328 | static void |
||
1329 | write_rgba_span2( const GLcontext *ctx, |
||
1330 | GLuint n, GLint x, GLint y, |
||
1331 | CONST GLchan rgba[][4], const GLubyte mask[] ) |
||
1332 | { |
||
1333 | OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1334 | GLushort *ptr2 = (GLushort *) PIXELADDR2(x, y); |
||
1335 | GLuint i; |
||
1336 | if (mask) { |
||
1337 | for (i = 0; i < n; i++, ptr2++) { |
||
1338 | if (mask[i]) { |
||
1339 | PACK_RGB_565(*ptr2, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]); |
||
1340 | } |
||
1341 | } |
||
1342 | } |
||
1343 | else { |
||
1344 | for (i = 0; i < n; i++, ptr2++) { |
||
1345 | PACK_RGB_565(*ptr2, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]); |
||
1346 | } |
||
1347 | } |
||
1348 | } |
||
1349 | |||
1350 | |||
1351 | /* Write RGB pixels to an RGB_565 buffer. */ |
||
1352 | static void |
||
1353 | write_rgb_span2( const GLcontext *ctx, |
||
1354 | GLuint n, GLint x, GLint y, |
||
1355 | CONST GLchan rgb[][3], const GLubyte mask[] ) |
||
1356 | { |
||
1357 | OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1358 | GLushort *ptr2 = (GLushort *) PIXELADDR2(x, y); |
||
1359 | GLuint i; |
||
1360 | if (mask) { |
||
1361 | for (i = 0; i < n; i++, ptr2++) { |
||
1362 | if (mask[i]) { |
||
1363 | PACK_RGB_565(*ptr2, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP]); |
||
1364 | } |
||
1365 | } |
||
1366 | } |
||
1367 | else { |
||
1368 | for (i = 0; i < n; i++, ptr2++) { |
||
1369 | PACK_RGB_565(*ptr2, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP]); |
||
1370 | } |
||
1371 | } |
||
1372 | } |
||
1373 | |||
1374 | |||
1375 | static void |
||
1376 | write_monocolor_span2( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
1377 | const GLchan color[4], const GLubyte mask[] ) |
||
1378 | { |
||
1379 | OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1380 | GLushort pixel; |
||
1381 | GLushort *ptr2 = (GLushort *) PIXELADDR2(x, y); |
||
1382 | GLuint i; |
||
1383 | PACK_RGB_565(pixel, color[RCOMP], color[GCOMP], color[BCOMP]); |
||
1384 | for (i = 0; i < n; i++, ptr2++) { |
||
1385 | if (mask[i]) { |
||
1386 | *ptr2 = pixel; |
||
1387 | } |
||
1388 | } |
||
1389 | } |
||
1390 | |||
1391 | |||
1392 | static void |
||
1393 | write_rgba_pixels2( const GLcontext *ctx, |
||
1394 | GLuint n, const GLint x[], const GLint y[], |
||
1395 | CONST GLchan rgba[][4], const GLubyte mask[] ) |
||
1396 | { |
||
1397 | OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1398 | GLuint i; |
||
1399 | for (i = 0; i < n; i++) { |
||
1400 | if (mask[i]) { |
||
1401 | GLushort *ptr2 = (GLushort *) PIXELADDR2(x[i],y[i]); |
||
1402 | PACK_RGB_565(*ptr2, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]); |
||
1403 | } |
||
1404 | } |
||
1405 | } |
||
1406 | |||
1407 | static void |
||
1408 | write_monocolor_pixels2( const GLcontext *ctx, |
||
1409 | GLuint n, const GLint x[], const GLint y[], |
||
1410 | const GLchan color[4], const GLubyte mask[] ) |
||
1411 | { |
||
1412 | OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1413 | GLuint i; |
||
1414 | GLushort pixel; |
||
1415 | PACK_RGB_565(pixel, color[RCOMP], color[GCOMP], color[BCOMP]); |
||
1416 | for (i = 0; i < n; i++) { |
||
1417 | if (mask[i]) { |
||
1418 | GLushort *ptr2 = (GLushort *) PIXELADDR2(x[i],y[i]); |
||
1419 | *ptr2 = pixel; |
||
1420 | } |
||
1421 | } |
||
1422 | } |
||
1423 | |||
1424 | static void |
||
1425 | read_rgba_span2( const GLcontext *ctx, |
||
1426 | GLuint n, GLint x, GLint y, |
||
1427 | GLchan rgba[][4] ) |
||
1428 | { |
||
1429 | OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1430 | GLuint i; |
||
1431 | const GLushort *ptr2 = (const GLushort *) PIXELADDR2(x, y); |
||
1432 | for (i = 0; i < n; i++, ptr2++) { |
||
1433 | /* This should be fixed to get the low bits right */ |
||
1434 | rgba[i][RCOMP] = (*ptr2 >> 8) & 0xFe; |
||
1435 | rgba[i][GCOMP] = (*ptr2 >> 3) & 0xFc; |
||
1436 | rgba[i][BCOMP] = (*ptr2 << 3) & 0xFe; |
||
1437 | rgba[i][ACOMP] = 0; |
||
1438 | } |
||
1439 | } |
||
1440 | |||
1441 | static void |
||
1442 | read_rgba_pixels2( const GLcontext *ctx, |
||
1443 | GLuint n, const GLint x[], const GLint y[], |
||
1444 | GLchan rgba[][4], const GLubyte mask[] ) |
||
1445 | { |
||
1446 | OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1447 | GLuint i; |
||
1448 | for (i = 0; i < n; i++) { |
||
1449 | if (mask[i]) { |
||
1450 | /* This should be fixed to get the low bits right */ |
||
1451 | const GLushort *ptr2 = (const GLushort *) PIXELADDR2(x[i],y[i]); |
||
1452 | rgba[i][RCOMP] = (*ptr2 >> 8) & 0xFE; |
||
1453 | rgba[i][GCOMP] = (*ptr2 >> 3) & 0xFC; |
||
1454 | rgba[i][BCOMP] = (*ptr2 << 3) & 0xFE; |
||
1455 | rgba[i][ACOMP] = 0; |
||
1456 | } |
||
1457 | } |
||
1458 | } |
||
1459 | |||
1460 | |||
1461 | |||
1462 | /**********************************************************************/ |
||
1463 | /***** Read/write spans/arrays of CI pixels *****/ |
||
1464 | /**********************************************************************/ |
||
1465 | |||
1466 | /* Write 32-bit color index to buffer */ |
||
1467 | static void |
||
1468 | write_index32_span( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
1469 | const GLuint index[], const GLubyte mask[] ) |
||
1470 | { |
||
1471 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1472 | GLchan *ptr1 = PIXELADDR1(x, y); |
||
1473 | GLuint i; |
||
1474 | if (mask) { |
||
1475 | for (i=0;i<n;i++,ptr1++) { |
||
1476 | if (mask[i]) { |
||
1477 | *ptr1 = (GLchan) index[i]; |
||
1478 | } |
||
1479 | } |
||
1480 | } |
||
1481 | else { |
||
1482 | for (i=0;i<n;i++,ptr1++) { |
||
1483 | *ptr1 = (GLchan) index[i]; |
||
1484 | } |
||
1485 | } |
||
1486 | } |
||
1487 | |||
1488 | |||
1489 | /* Write 8-bit color index to buffer */ |
||
1490 | static void |
||
1491 | write_index8_span( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
1492 | const GLubyte index[], const GLubyte mask[] ) |
||
1493 | { |
||
1494 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1495 | GLchan *ptr1 = PIXELADDR1(x, y); |
||
1496 | GLuint i; |
||
1497 | if (mask) { |
||
1498 | for (i=0;i<n;i++,ptr1++) { |
||
1499 | if (mask[i]) { |
||
1500 | *ptr1 = (GLchan) index[i]; |
||
1501 | } |
||
1502 | } |
||
1503 | } |
||
1504 | else { |
||
1505 | MEMCPY(ptr1, index, n * sizeof(GLchan)); |
||
1506 | } |
||
1507 | } |
||
1508 | |||
1509 | |||
1510 | static void |
||
1511 | write_monoindex_span( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
1512 | GLuint colorIndex, const GLubyte mask[] ) |
||
1513 | { |
||
1514 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1515 | GLchan *ptr1 = PIXELADDR1(x, y); |
||
1516 | GLuint i; |
||
1517 | for (i=0;i<n;i++,ptr1++) { |
||
1518 | if (mask[i]) { |
||
1519 | *ptr1 = (GLchan) colorIndex; |
||
1520 | } |
||
1521 | } |
||
1522 | } |
||
1523 | |||
1524 | |||
1525 | static void |
||
1526 | write_index_pixels( const GLcontext *ctx, |
||
1527 | GLuint n, const GLint x[], const GLint y[], |
||
1528 | const GLuint index[], const GLubyte mask[] ) |
||
1529 | { |
||
1530 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1531 | GLuint i; |
||
1532 | for (i=0;i<n;i++) { |
||
1533 | if (mask[i]) { |
||
1534 | GLchan *ptr1 = PIXELADDR1(x[i], y[i]); |
||
1535 | *ptr1 = (GLchan) index[i]; |
||
1536 | } |
||
1537 | } |
||
1538 | } |
||
1539 | |||
1540 | |||
1541 | static void |
||
1542 | write_monoindex_pixels( const GLcontext *ctx, |
||
1543 | GLuint n, const GLint x[], const GLint y[], |
||
1544 | GLuint colorIndex, const GLubyte mask[] ) |
||
1545 | { |
||
1546 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1547 | GLuint i; |
||
1548 | for (i=0;i<n;i++) { |
||
1549 | if (mask[i]) { |
||
1550 | GLchan *ptr1 = PIXELADDR1(x[i], y[i]); |
||
1551 | *ptr1 = (GLchan) colorIndex; |
||
1552 | } |
||
1553 | } |
||
1554 | } |
||
1555 | |||
1556 | |||
1557 | static void |
||
1558 | read_index_span( const GLcontext *ctx, |
||
1559 | GLuint n, GLint x, GLint y, GLuint index[] ) |
||
1560 | { |
||
1561 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1562 | GLuint i; |
||
1563 | const GLchan *ptr1 = (const GLchan *) PIXELADDR1(x, y); |
||
1564 | for (i=0;i<n;i++,ptr1++) { |
||
1565 | index[i] = (GLuint) *ptr1; |
||
1566 | } |
||
1567 | } |
||
1568 | |||
1569 | |||
1570 | static void |
||
1571 | read_index_pixels( const GLcontext *ctx, |
||
1572 | GLuint n, const GLint x[], const GLint y[], |
||
1573 | GLuint index[], const GLubyte mask[] ) |
||
1574 | { |
||
1575 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1576 | GLuint i; |
||
1577 | for (i=0;i<n;i++) { |
||
1578 | if (mask[i] ) { |
||
1579 | const GLchan *ptr1 = PIXELADDR1(x[i], y[i]); |
||
1580 | index[i] = (GLuint) *ptr1; |
||
1581 | } |
||
1582 | } |
||
1583 | } |
||
1584 | |||
1585 | |||
1586 | |||
1587 | /**********************************************************************/ |
||
1588 | /***** Optimized line rendering *****/ |
||
1589 | /**********************************************************************/ |
||
1590 | |||
1591 | |||
1592 | /* |
||
1593 | * Draw a flat-shaded, RGB line into an osmesa buffer. |
||
1594 | */ |
||
1595 | static void |
||
1596 | flat_rgba_line( GLcontext *ctx, const SWvertex *vert0, const SWvertex *vert1 ) |
||
1597 | { |
||
1598 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1599 | const GLchan *color = vert1->color; |
||
1600 | |||
1601 | #define INTERP_XY 1 |
||
1602 | #define CLIP_HACK 1 |
||
1603 | #define PLOT(X, Y) \ |
||
1604 | do { \ |
||
1605 | GLchan *p = PIXELADDR4(X, Y); \ |
||
1606 | PACK_RGBA(p, color[0], color[1], color[2], color[3]); \ |
||
1607 | } while (0) |
||
1608 | |||
1609 | #ifdef WIN32 |
||
1610 | #include "..\swrast\s_linetemp.h" |
||
1611 | #else |
||
1612 | #include "swrast/s_linetemp.h" |
||
1613 | #endif |
||
1614 | } |
||
1615 | |||
1616 | |||
1617 | /* |
||
1618 | * Draw a flat-shaded, Z-less, RGB line into an osmesa buffer. |
||
1619 | */ |
||
1620 | static void |
||
1621 | flat_rgba_z_line(GLcontext *ctx, const SWvertex *vert0, const SWvertex *vert1) |
||
1622 | { |
||
1623 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1624 | const GLchan *color = vert1->color; |
||
1625 | |||
1626 | #define INTERP_XY 1 |
||
1627 | #define INTERP_Z 1 |
||
1628 | #define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE |
||
1629 | #define CLIP_HACK 1 |
||
1630 | #define PLOT(X, Y) \ |
||
1631 | do { \ |
||
1632 | if (Z < *zPtr) { \ |
||
1633 | GLchan *p = PIXELADDR4(X, Y); \ |
||
1634 | PACK_RGBA(p, color[RCOMP], color[GCOMP], \ |
||
1635 | color[BCOMP], color[ACOMP]); \ |
||
1636 | *zPtr = Z; \ |
||
1637 | } \ |
||
1638 | } while (0) |
||
1639 | |||
1640 | |||
1641 | #ifdef WIN32 |
||
1642 | #include "..\swrast\s_linetemp.h" |
||
1643 | #else |
||
1644 | #include "swrast/s_linetemp.h" |
||
1645 | #endif |
||
1646 | } |
||
1647 | |||
1648 | |||
1649 | /* |
||
1650 | * Draw a flat-shaded, alpha-blended, RGB line into an osmesa buffer. |
||
1651 | * XXX update for GLchan |
||
1652 | */ |
||
1653 | static void |
||
1654 | flat_blend_rgba_line( GLcontext *ctx, |
||
1655 | const SWvertex *vert0, const SWvertex *vert1 ) |
||
1656 | { |
||
1657 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1658 | const GLint rshift = osmesa->rshift; |
||
1659 | const GLint gshift = osmesa->gshift; |
||
1660 | const GLint bshift = osmesa->bshift; |
||
1661 | const GLint avalue = vert0->color[3]; |
||
1662 | const GLint msavalue = CHAN_MAX - avalue; |
||
1663 | const GLint rvalue = vert1->color[0]*avalue; |
||
1664 | const GLint gvalue = vert1->color[1]*avalue; |
||
1665 | const GLint bvalue = vert1->color[2]*avalue; |
||
1666 | |||
1667 | #define INTERP_XY 1 |
||
1668 | #define CLIP_HACK 1 |
||
1669 | #define PLOT(X,Y) \ |
||
1670 | { GLuint *ptr4 = (GLuint *) PIXELADDR4(X, Y); \ |
||
1671 | GLuint pixel = 0; \ |
||
1672 | pixel |=((((((*ptr4) >> rshift) & 0xff)*msavalue+rvalue)>>8) << rshift);\ |
||
1673 | pixel |=((((((*ptr4) >> gshift) & 0xff)*msavalue+gvalue)>>8) << gshift);\ |
||
1674 | pixel |=((((((*ptr4) >> bshift) & 0xff)*msavalue+bvalue)>>8) << bshift);\ |
||
1675 | *ptr4 = pixel; \ |
||
1676 | } |
||
1677 | |||
1678 | #if 0 /* XXX use this in the future */ |
||
1679 | #define PLOT(X,Y) \ |
||
1680 | { \ |
||
1681 | GLchan *pixel = (GLchan *) PIXELADDR4(X, Y); \ |
||
1682 | pixel[rInd] = (pixel[rInd] * msavalue + rvalue) >> CHAN_BITS; \ |
||
1683 | pixel[gInd] = (pixel[gInd] * msavalue + gvalue) >> CHAN_BITS; \ |
||
1684 | pixel[bInd] = (pixel[bInd] * msavalue + bvalue) >> CHAN_BITS; \ |
||
1685 | pixel[aInd] = (pixel[aInd] * msavalue + avalue) >> CHAN_BITS; \ |
||
1686 | } |
||
1687 | #endif |
||
1688 | |||
1689 | #ifdef WIN32 |
||
1690 | #include "..\swrast\s_linetemp.h" |
||
1691 | #else |
||
1692 | #include "swrast/s_linetemp.h" |
||
1693 | #endif |
||
1694 | } |
||
1695 | |||
1696 | |||
1697 | /* |
||
1698 | * Draw a flat-shaded, Z-less, alpha-blended, RGB line into an osmesa buffer. |
||
1699 | * But don't write to Z buffer. |
||
1700 | * XXX update for GLchan |
||
1701 | */ |
||
1702 | static void |
||
1703 | flat_blend_rgba_z_line( GLcontext *ctx, |
||
1704 | const SWvertex *vert0, const SWvertex *vert1 ) |
||
1705 | { |
||
1706 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1707 | const GLint rshift = osmesa->rshift; |
||
1708 | const GLint gshift = osmesa->gshift; |
||
1709 | const GLint bshift = osmesa->bshift; |
||
1710 | const GLint avalue = vert0->color[3]; |
||
1711 | const GLint msavalue = 256 - avalue; |
||
1712 | const GLint rvalue = vert1->color[0]*avalue; |
||
1713 | const GLint gvalue = vert1->color[1]*avalue; |
||
1714 | const GLint bvalue = vert1->color[2]*avalue; |
||
1715 | |||
1716 | #define INTERP_XY 1 |
||
1717 | #define INTERP_Z 1 |
||
1718 | #define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE |
||
1719 | #define CLIP_HACK 1 |
||
1720 | #define PLOT(X,Y) \ |
||
1721 | if (Z < *zPtr) { \ |
||
1722 | GLuint *ptr4 = (GLuint *) PIXELADDR4(X, Y); \ |
||
1723 | GLuint pixel = 0; \ |
||
1724 | pixel |=((((((*ptr4) >> rshift) & 0xff)*msavalue+rvalue)>>8) << rshift); \ |
||
1725 | pixel |=((((((*ptr4) >> gshift) & 0xff)*msavalue+gvalue)>>8) << gshift); \ |
||
1726 | pixel |=((((((*ptr4) >> bshift) & 0xff)*msavalue+bvalue)>>8) << bshift); \ |
||
1727 | *ptr4 = pixel; \ |
||
1728 | } |
||
1729 | |||
1730 | #if 0 /* XXX use this in the future */ |
||
1731 | #define PLOT(X,Y) \ |
||
1732 | if (Z < *zPtr) { \ |
||
1733 | GLchan *pixel = (GLchan *) PIXELADDR4(X, Y); \ |
||
1734 | pixel[rInd] = (pixel[rInd] * msavalue + rvalue) >> CHAN_BITS; \ |
||
1735 | pixel[gInd] = (pixel[gInd] * msavalue + gvalue) >> CHAN_BITS; \ |
||
1736 | pixel[bInd] = (pixel[bInd] * msavalue + bvalue) >> CHAN_BITS; \ |
||
1737 | pixel[aInd] = (pixel[aInd] * msavalue + avalue) >> CHAN_BITS; \ |
||
1738 | } |
||
1739 | #endif |
||
1740 | |||
1741 | #ifdef WIN32 |
||
1742 | #include "..\swrast\s_linetemp.h" |
||
1743 | #else |
||
1744 | #include "swrast/s_linetemp.h" |
||
1745 | #endif |
||
1746 | } |
||
1747 | |||
1748 | |||
1749 | /* |
||
1750 | * Draw a flat-shaded, Z-less, alpha-blended, RGB line into an osmesa buffer. |
||
1751 | * XXX update for GLchan |
||
1752 | */ |
||
1753 | static void |
||
1754 | flat_blend_rgba_z_line_write( GLcontext *ctx, |
||
1755 | const SWvertex *vert0, const SWvertex *vert1 ) |
||
1756 | { |
||
1757 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1758 | const GLint rshift = osmesa->rshift; |
||
1759 | const GLint gshift = osmesa->gshift; |
||
1760 | const GLint bshift = osmesa->bshift; |
||
1761 | const GLint avalue = vert0->color[3]; |
||
1762 | const GLint msavalue = 256 - avalue; |
||
1763 | const GLint rvalue = vert1->color[0]*avalue; |
||
1764 | const GLint gvalue = vert1->color[1]*avalue; |
||
1765 | const GLint bvalue = vert1->color[2]*avalue; |
||
1766 | |||
1767 | #define INTERP_XY 1 |
||
1768 | #define INTERP_Z 1 |
||
1769 | #define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE |
||
1770 | #define CLIP_HACK 1 |
||
1771 | #define PLOT(X,Y) \ |
||
1772 | if (Z < *zPtr) { \ |
||
1773 | GLuint *ptr4 = (GLuint *) PIXELADDR4(X, Y); \ |
||
1774 | GLuint pixel = 0; \ |
||
1775 | pixel |=((((((*ptr4) >> rshift) & 0xff)*msavalue+rvalue)>>8) << rshift); \ |
||
1776 | pixel |=((((((*ptr4) >> gshift) & 0xff)*msavalue+gvalue)>>8) << gshift); \ |
||
1777 | pixel |=((((((*ptr4) >> bshift) & 0xff)*msavalue+bvalue)>>8) << bshift); \ |
||
1778 | *ptr4 = pixel; \ |
||
1779 | *zPtr = Z; \ |
||
1780 | } |
||
1781 | |||
1782 | #if 0 /* XXX use this in the future */ |
||
1783 | #define PLOT(X,Y) \ |
||
1784 | if (Z < *zPtr) { \ |
||
1785 | GLchan *pixel = (GLchan *) PIXELADDR4(X, Y); \ |
||
1786 | pixel[rInd] = (pixel[rInd] * msavalue + rvalue) >> CHAN_BITS; \ |
||
1787 | pixel[gInd] = (pixel[gInd] * msavalue + gvalue) >> CHAN_BITS; \ |
||
1788 | pixel[bInd] = (pixel[bInd] * msavalue + bvalue) >> CHAN_BITS; \ |
||
1789 | pixel[aInd] = (pixel[aInd] * msavalue + avalue) >> CHAN_BITS; \ |
||
1790 | *zPtr = Z; \ |
||
1791 | } |
||
1792 | #endif |
||
1793 | |||
1794 | #ifdef WIN32 |
||
1795 | #include "..\swrast\s_linetemp.h" |
||
1796 | #else |
||
1797 | #include "swrast/s_linetemp.h" |
||
1798 | #endif |
||
1799 | } |
||
1800 | |||
1801 | |||
1802 | /* |
||
1803 | * Analyze context state to see if we can provide a fast line drawing |
||
1804 | * function, like those in lines.c. Otherwise, return NULL. |
||
1805 | */ |
||
1806 | static swrast_line_func |
||
1807 | osmesa_choose_line_function( GLcontext *ctx ) |
||
1808 | { |
||
1809 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1810 | const SWcontext *swrast = SWRAST_CONTEXT(ctx); |
||
1811 | |||
1812 | if (CHAN_BITS != 8) return NULL; |
||
1813 | if (ctx->RenderMode != GL_RENDER) return NULL; |
||
1814 | if (ctx->Line.SmoothFlag) return NULL; |
||
1815 | if (ctx->Texture._EnabledUnits) return NULL; |
||
1816 | if (ctx->Light.ShadeModel != GL_FLAT) return NULL; |
||
1817 | if (ctx->Line.Width != 1.0F) return NULL; |
||
1818 | if (ctx->Line.StippleFlag) return NULL; |
||
1819 | if (ctx->Line.SmoothFlag) return NULL; |
||
1820 | if (osmesa->format != OSMESA_RGBA && |
||
1821 | osmesa->format != OSMESA_BGRA && |
||
1822 | osmesa->format != OSMESA_ARGB) return NULL; |
||
1823 | |||
1824 | if (swrast->_RasterMask==DEPTH_BIT |
||
1825 | && ctx->Depth.Func==GL_LESS |
||
1826 | && ctx->Depth.Mask==GL_TRUE |
||
1827 | && ctx->Visual.depthBits == DEFAULT_SOFTWARE_DEPTH_BITS) { |
||
1828 | return (swrast_line_func) flat_rgba_z_line; |
||
1829 | } |
||
1830 | |||
1831 | if (swrast->_RasterMask == 0) { |
||
1832 | return (swrast_line_func) flat_rgba_line; |
||
1833 | } |
||
1834 | |||
1835 | if (swrast->_RasterMask==(DEPTH_BIT|BLEND_BIT) |
||
1836 | && ctx->Depth.Func==GL_LESS |
||
1837 | && ctx->Depth.Mask==GL_TRUE |
||
1838 | && ctx->Visual.depthBits == DEFAULT_SOFTWARE_DEPTH_BITS |
||
1839 | && ctx->Color.BlendSrcRGB==GL_SRC_ALPHA |
||
1840 | && ctx->Color.BlendDstRGB==GL_ONE_MINUS_SRC_ALPHA |
||
1841 | && ctx->Color.BlendSrcA==GL_SRC_ALPHA |
||
1842 | && ctx->Color.BlendDstA==GL_ONE_MINUS_SRC_ALPHA |
||
1843 | && ctx->Color.BlendEquation==GL_FUNC_ADD_EXT) { |
||
1844 | return (swrast_line_func) flat_blend_rgba_z_line_write; |
||
1845 | } |
||
1846 | |||
1847 | if (swrast->_RasterMask==(DEPTH_BIT|BLEND_BIT) |
||
1848 | && ctx->Depth.Func==GL_LESS |
||
1849 | && ctx->Depth.Mask==GL_FALSE |
||
1850 | && ctx->Visual.depthBits == DEFAULT_SOFTWARE_DEPTH_BITS |
||
1851 | && ctx->Color.BlendSrcRGB==GL_SRC_ALPHA |
||
1852 | && ctx->Color.BlendDstRGB==GL_ONE_MINUS_SRC_ALPHA |
||
1853 | && ctx->Color.BlendSrcA==GL_SRC_ALPHA |
||
1854 | && ctx->Color.BlendDstA==GL_ONE_MINUS_SRC_ALPHA |
||
1855 | && ctx->Color.BlendEquation==GL_FUNC_ADD_EXT) { |
||
1856 | return (swrast_line_func) flat_blend_rgba_z_line; |
||
1857 | } |
||
1858 | |||
1859 | if (swrast->_RasterMask==BLEND_BIT |
||
1860 | && ctx->Color.BlendSrcRGB==GL_SRC_ALPHA |
||
1861 | && ctx->Color.BlendDstRGB==GL_ONE_MINUS_SRC_ALPHA |
||
1862 | && ctx->Color.BlendSrcA==GL_SRC_ALPHA |
||
1863 | && ctx->Color.BlendDstA==GL_ONE_MINUS_SRC_ALPHA |
||
1864 | && ctx->Color.BlendEquation==GL_FUNC_ADD_EXT) { |
||
1865 | return (swrast_line_func) flat_blend_rgba_line; |
||
1866 | } |
||
1867 | |||
1868 | return (swrast_line_func) NULL; |
||
1869 | } |
||
1870 | |||
1871 | |||
1872 | /**********************************************************************/ |
||
1873 | /***** Optimized triangle rendering *****/ |
||
1874 | /**********************************************************************/ |
||
1875 | |||
1876 | |||
1877 | /* |
||
1878 | * Smooth-shaded, z-less triangle, RGBA color. |
||
1879 | */ |
||
1880 | static void smooth_rgba_z_triangle( GLcontext *ctx, |
||
1881 | const SWvertex *v0, |
||
1882 | const SWvertex *v1, |
||
1883 | const SWvertex *v2 ) |
||
1884 | { |
||
1885 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1886 | #define INTERP_Z 1 |
||
1887 | #define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE |
||
1888 | #define INTERP_RGB 1 |
||
1889 | #define INTERP_ALPHA 1 |
||
1890 | #define RENDER_SPAN( span ) \ |
||
1891 | GLuint i; \ |
||
1892 | GLchan *img = PIXELADDR4(span.x, span.y); \ |
||
1893 | for (i = 0; i < span.end; i++, img += 4) { \ |
||
1894 | const GLdepth z = FixedToDepth(span.z); \ |
||
1895 | if (z < zRow[i]) { \ |
||
1896 | PACK_RGBA(img, FixedToChan(span.red), \ |
||
1897 | FixedToChan(span.green), FixedToChan(span.blue), \ |
||
1898 | FixedToChan(span.alpha)); \ |
||
1899 | zRow[i] = z; \ |
||
1900 | } \ |
||
1901 | span.red += span.redStep; \ |
||
1902 | span.green += span.greenStep; \ |
||
1903 | span.blue += span.blueStep; \ |
||
1904 | span.alpha += span.alphaStep; \ |
||
1905 | span.z += span.zStep; \ |
||
1906 | } |
||
1907 | |||
1908 | #ifdef WIN32 |
||
1909 | #include "..\swrast\s_tritemp.h" |
||
1910 | #else |
||
1911 | #include "swrast/s_tritemp.h" |
||
1912 | #endif |
||
1913 | } |
||
1914 | |||
1915 | |||
1916 | |||
1917 | |||
1918 | /* |
||
1919 | * Flat-shaded, z-less triangle, RGBA color. |
||
1920 | */ |
||
1921 | static void flat_rgba_z_triangle( GLcontext *ctx, |
||
1922 | const SWvertex *v0, |
||
1923 | const SWvertex *v1, |
||
1924 | const SWvertex *v2 ) |
||
1925 | { |
||
1926 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1927 | #define INTERP_Z 1 |
||
1928 | #define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE |
||
1929 | #define SETUP_CODE \ |
||
1930 | GLuint pixel; \ |
||
1931 | PACK_RGBA((GLchan *) &pixel, v2->color[0], v2->color[1], \ |
||
1932 | v2->color[2], v2->color[3]); |
||
1933 | |||
1934 | #define RENDER_SPAN( span ) \ |
||
1935 | GLuint i; \ |
||
1936 | GLuint *img = (GLuint *) PIXELADDR4(span.x, span.y); \ |
||
1937 | for (i = 0; i < span.end; i++) { \ |
||
1938 | const GLdepth z = FixedToDepth(span.z); \ |
||
1939 | if (z < zRow[i]) { \ |
||
1940 | img[i] = pixel; \ |
||
1941 | zRow[i] = z; \ |
||
1942 | } \ |
||
1943 | span.z += span.zStep; \ |
||
1944 | } |
||
1945 | |||
1946 | #ifdef WIN32 |
||
1947 | #include "..\swrast\s_tritemp.h" |
||
1948 | #else |
||
1949 | #include "swrast/s_tritemp.h" |
||
1950 | #endif |
||
1951 | } |
||
1952 | |||
1953 | |||
1954 | |||
1955 | /* |
||
1956 | * Return pointer to an accelerated triangle function if possible. |
||
1957 | */ |
||
1958 | static swrast_tri_func |
||
1959 | osmesa_choose_triangle_function( GLcontext *ctx ) |
||
1960 | { |
||
1961 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
1962 | const SWcontext *swrast = SWRAST_CONTEXT(ctx); |
||
1963 | |||
1964 | if (CHAN_BITS != 8) return (swrast_tri_func) NULL; |
||
1965 | if (ctx->RenderMode != GL_RENDER) return (swrast_tri_func) NULL; |
||
1966 | if (ctx->Polygon.SmoothFlag) return (swrast_tri_func) NULL; |
||
1967 | if (ctx->Polygon.StippleFlag) return (swrast_tri_func) NULL; |
||
1968 | if (ctx->Texture._EnabledUnits) return (swrast_tri_func) NULL; |
||
1969 | if (osmesa->format != OSMESA_RGBA && |
||
1970 | osmesa->format != OSMESA_BGRA && |
||
1971 | osmesa->format != OSMESA_ARGB) return (swrast_tri_func) NULL; |
||
1972 | if (ctx->Polygon.CullFlag && |
||
1973 | ctx->Polygon.CullFaceMode == GL_FRONT_AND_BACK) |
||
1974 | return (swrast_tri_func) NULL; |
||
1975 | |||
1976 | if (swrast->_RasterMask == DEPTH_BIT && |
||
1977 | ctx->Depth.Func == GL_LESS && |
||
1978 | ctx->Depth.Mask == GL_TRUE && |
||
1979 | ctx->Visual.depthBits == DEFAULT_SOFTWARE_DEPTH_BITS) { |
||
1980 | if (ctx->Light.ShadeModel == GL_SMOOTH) { |
||
1981 | return (swrast_tri_func) smooth_rgba_z_triangle; |
||
1982 | } |
||
1983 | else { |
||
1984 | return (swrast_tri_func) flat_rgba_z_triangle; |
||
1985 | } |
||
1986 | } |
||
1987 | return (swrast_tri_func) NULL; |
||
1988 | } |
||
1989 | |||
1990 | |||
1991 | |||
1992 | /* Override for the swrast triangle-selection function. Try to use one |
||
1993 | * of our internal triangle functions, otherwise fall back to the |
||
1994 | * standard swrast functions. |
||
1995 | */ |
||
1996 | static void osmesa_choose_triangle( GLcontext *ctx ) |
||
1997 | { |
||
1998 | SWcontext *swrast = SWRAST_CONTEXT(ctx); |
||
1999 | |||
2000 | swrast->Triangle = osmesa_choose_triangle_function( ctx ); |
||
2001 | if (!swrast->Triangle) |
||
2002 | _swrast_choose_triangle( ctx ); |
||
2003 | } |
||
2004 | |||
2005 | static void osmesa_choose_line( GLcontext *ctx ) |
||
2006 | { |
||
2007 | SWcontext *swrast = SWRAST_CONTEXT(ctx); |
||
2008 | |||
2009 | swrast->Line = osmesa_choose_line_function( ctx ); |
||
2010 | if (!swrast->Line) |
||
2011 | _swrast_choose_line( ctx ); |
||
2012 | } |
||
2013 | |||
2014 | |||
2015 | #define OSMESA_NEW_LINE (_NEW_LINE | \ |
||
2016 | _NEW_TEXTURE | \ |
||
2017 | _NEW_LIGHT | \ |
||
2018 | _NEW_DEPTH | \ |
||
2019 | _NEW_RENDERMODE | \ |
||
2020 | _SWRAST_NEW_RASTERMASK) |
||
2021 | |||
2022 | #define OSMESA_NEW_TRIANGLE (_NEW_POLYGON | \ |
||
2023 | _NEW_TEXTURE | \ |
||
2024 | _NEW_LIGHT | \ |
||
2025 | _NEW_DEPTH | \ |
||
2026 | _NEW_RENDERMODE | \ |
||
2027 | _SWRAST_NEW_RASTERMASK) |
||
2028 | |||
2029 | |||
2030 | /* Extend the software rasterizer with our line and triangle |
||
2031 | * functions. |
||
2032 | */ |
||
2033 | static void osmesa_register_swrast_functions( GLcontext *ctx ) |
||
2034 | { |
||
2035 | SWcontext *swrast = SWRAST_CONTEXT( ctx ); |
||
2036 | |||
2037 | swrast->choose_line = osmesa_choose_line; |
||
2038 | swrast->choose_triangle = osmesa_choose_triangle; |
||
2039 | |||
2040 | swrast->invalidate_line |= OSMESA_NEW_LINE; |
||
2041 | swrast->invalidate_triangle |= OSMESA_NEW_TRIANGLE; |
||
2042 | } |
||
2043 | |||
2044 | |||
2045 | static const GLubyte *get_string( GLcontext *ctx, GLenum name ) |
||
2046 | { |
||
2047 | (void) ctx; |
||
2048 | switch (name) { |
||
2049 | case GL_RENDERER: |
||
2050 | #if CHAN_BITS == 32 |
||
2051 | return (const GLubyte *) "Mesa OffScreen32"; |
||
2052 | #elif CHAN_BITS == 16 |
||
2053 | return (const GLubyte *) "Mesa OffScreen16"; |
||
2054 | #else |
||
2055 | return (const GLubyte *) "Mesa OffScreen"; |
||
2056 | #endif |
||
2057 | default: |
||
2058 | return NULL; |
||
2059 | } |
||
2060 | } |
||
2061 | |||
2062 | |||
2063 | static void osmesa_update_state( GLcontext *ctx, GLuint new_state ) |
||
2064 | { |
||
2065 | OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
2066 | struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference( ctx ); |
||
2067 | TNLcontext *tnl = TNL_CONTEXT(ctx); |
||
2068 | |||
2069 | ASSERT((void *) osmesa == (void *) ctx->DriverCtx); |
||
2070 | |||
2071 | /* |
||
2072 | * XXX these function pointers could be initialized just once during |
||
2073 | * context creation since they don't depend on any state changes. |
||
2074 | */ |
||
2075 | |||
2076 | ctx->Driver.GetString = get_string; |
||
2077 | ctx->Driver.UpdateState = osmesa_update_state; |
||
2078 | ctx->Driver.ResizeBuffers = _swrast_alloc_buffers; |
||
2079 | ctx->Driver.GetBufferSize = buffer_size; |
||
2080 | |||
2081 | ctx->Driver.Accum = _swrast_Accum; |
||
2082 | ctx->Driver.Bitmap = _swrast_Bitmap; |
||
2083 | ctx->Driver.Clear = mesa_clear; |
||
2084 | ctx->Driver.CopyPixels = _swrast_CopyPixels; |
||
2085 | ctx->Driver.DrawPixels = _swrast_DrawPixels; |
||
2086 | ctx->Driver.ReadPixels = _swrast_ReadPixels; |
||
2087 | ctx->Driver.DrawBuffer = _swrast_DrawBuffer; |
||
2088 | |||
2089 | ctx->Driver.ChooseTextureFormat = _mesa_choose_tex_format; |
||
2090 | ctx->Driver.TexImage1D = _mesa_store_teximage1d; |
||
2091 | ctx->Driver.TexImage2D = _mesa_store_teximage2d; |
||
2092 | ctx->Driver.TexImage3D = _mesa_store_teximage3d; |
||
2093 | ctx->Driver.TexSubImage1D = _mesa_store_texsubimage1d; |
||
2094 | ctx->Driver.TexSubImage2D = _mesa_store_texsubimage2d; |
||
2095 | ctx->Driver.TexSubImage3D = _mesa_store_texsubimage3d; |
||
2096 | ctx->Driver.TestProxyTexImage = _mesa_test_proxy_teximage; |
||
2097 | |||
2098 | ctx->Driver.CompressedTexImage1D = _mesa_store_compressed_teximage1d; |
||
2099 | ctx->Driver.CompressedTexImage2D = _mesa_store_compressed_teximage2d; |
||
2100 | ctx->Driver.CompressedTexImage3D = _mesa_store_compressed_teximage3d; |
||
2101 | ctx->Driver.CompressedTexSubImage1D = _mesa_store_compressed_texsubimage1d; |
||
2102 | ctx->Driver.CompressedTexSubImage2D = _mesa_store_compressed_texsubimage2d; |
||
2103 | ctx->Driver.CompressedTexSubImage3D = _mesa_store_compressed_texsubimage3d; |
||
2104 | |||
2105 | ctx->Driver.CopyTexImage1D = _swrast_copy_teximage1d; |
||
2106 | ctx->Driver.CopyTexImage2D = _swrast_copy_teximage2d; |
||
2107 | ctx->Driver.CopyTexSubImage1D = _swrast_copy_texsubimage1d; |
||
2108 | ctx->Driver.CopyTexSubImage2D = _swrast_copy_texsubimage2d; |
||
2109 | ctx->Driver.CopyTexSubImage3D = _swrast_copy_texsubimage3d; |
||
2110 | ctx->Driver.CopyColorTable = _swrast_CopyColorTable; |
||
2111 | ctx->Driver.CopyColorSubTable = _swrast_CopyColorSubTable; |
||
2112 | ctx->Driver.CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D; |
||
2113 | ctx->Driver.CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D; |
||
2114 | |||
2115 | swdd->SetBuffer = set_buffer; |
||
2116 | |||
2117 | /* RGB(A) span/pixel functions */ |
||
2118 | if (osmesa->format == OSMESA_RGB) { |
||
2119 | swdd->WriteRGBASpan = write_rgba_span_RGB; |
||
2120 | swdd->WriteRGBSpan = write_rgb_span_RGB; |
||
2121 | swdd->WriteMonoRGBASpan = write_monocolor_span_RGB; |
||
2122 | swdd->WriteRGBAPixels = write_rgba_pixels_RGB; |
||
2123 | swdd->WriteMonoRGBAPixels = write_monocolor_pixels_RGB; |
||
2124 | swdd->ReadRGBASpan = read_rgba_span3; |
||
2125 | swdd->ReadRGBAPixels = read_rgba_pixels3; |
||
2126 | } |
||
2127 | else if (osmesa->format == OSMESA_BGR) { |
||
2128 | swdd->WriteRGBASpan = write_rgba_span_BGR; |
||
2129 | swdd->WriteRGBSpan = write_rgb_span_BGR; |
||
2130 | swdd->WriteMonoRGBASpan = write_monocolor_span_BGR; |
||
2131 | swdd->WriteRGBAPixels = write_rgba_pixels_BGR; |
||
2132 | swdd->WriteMonoRGBAPixels = write_monocolor_pixels_BGR; |
||
2133 | swdd->ReadRGBASpan = read_rgba_span3; |
||
2134 | swdd->ReadRGBAPixels = read_rgba_pixels3; |
||
2135 | } |
||
2136 | else if (osmesa->format == OSMESA_RGB_565) { |
||
2137 | swdd->WriteRGBASpan = write_rgba_span2; |
||
2138 | swdd->WriteRGBSpan = write_rgb_span2; |
||
2139 | swdd->WriteMonoRGBASpan = write_monocolor_span2; |
||
2140 | swdd->WriteRGBAPixels = write_rgba_pixels2; |
||
2141 | swdd->WriteMonoRGBAPixels = write_monocolor_pixels2; |
||
2142 | swdd->ReadRGBASpan = read_rgba_span2; |
||
2143 | swdd->ReadRGBAPixels = read_rgba_pixels2; |
||
2144 | } |
||
2145 | else { |
||
2146 | /* 4 GLchan / pixel in frame buffer */ |
||
2147 | swdd->WriteRGBSpan = write_rgb_span; |
||
2148 | swdd->WriteRGBAPixels = write_rgba_pixels; |
||
2149 | swdd->WriteMonoRGBASpan = write_monocolor_span; |
||
2150 | swdd->WriteMonoRGBAPixels = write_monocolor_pixels; |
||
2151 | if (osmesa->format == OSMESA_RGBA && |
||
2152 | CHAN_TYPE == GL_UNSIGNED_BYTE && |
||
2153 | RCOMP==0 && GCOMP==1 && BCOMP==2 && ACOMP==3) { |
||
2154 | /* special, fast case */ |
||
2155 | swdd->WriteRGBASpan = write_rgba_span_rgba; |
||
2156 | swdd->ReadRGBASpan = read_rgba_span_rgba; |
||
2157 | } |
||
2158 | else { |
||
2159 | swdd->WriteRGBASpan = write_rgba_span; |
||
2160 | swdd->ReadRGBASpan = read_rgba_span; |
||
2161 | } |
||
2162 | swdd->ReadRGBAPixels = read_rgba_pixels; |
||
2163 | } |
||
2164 | |||
2165 | /* CI span/pixel functions */ |
||
2166 | swdd->WriteCI32Span = write_index32_span; |
||
2167 | swdd->WriteCI8Span = write_index8_span; |
||
2168 | swdd->WriteMonoCISpan = write_monoindex_span; |
||
2169 | swdd->WriteCI32Pixels = write_index_pixels; |
||
2170 | swdd->WriteMonoCIPixels = write_monoindex_pixels; |
||
2171 | swdd->ReadCI32Span = read_index_span; |
||
2172 | swdd->ReadCI32Pixels = read_index_pixels; |
||
2173 | |||
2174 | tnl->Driver.RunPipeline = _tnl_run_pipeline; |
||
2175 | |||
2176 | _swrast_InvalidateState( ctx, new_state ); |
||
2177 | _swsetup_InvalidateState( ctx, new_state ); |
||
2178 | _ac_InvalidateState( ctx, new_state ); |
||
2179 | _tnl_InvalidateState( ctx, new_state ); |
||
2180 | } |