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5564 | serge | 1 | /* |
2 | * Mesa 3-D graphics library |
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3 | * |
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4 | * Copyright (C) 1999-2006 Brian Paul All Rights Reserved. |
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5 | * |
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6 | * Permission is hereby granted, free of charge, to any person obtaining a |
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7 | * copy of this software and associated documentation files (the "Software"), |
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8 | * to deal in the Software without restriction, including without limitation |
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9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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10 | * and/or sell copies of the Software, and to permit persons to whom the |
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11 | * Software is furnished to do so, subject to the following conditions: |
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12 | * |
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13 | * The above copyright notice and this permission notice shall be included |
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14 | * in all copies or substantial portions of the Software. |
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15 | * |
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16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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17 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR |
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20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
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21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
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22 | * OTHER DEALINGS IN THE SOFTWARE. |
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23 | */ |
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24 | |||
25 | |||
26 | #include "main/glheader.h" |
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27 | #include "main/context.h" |
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28 | #include "main/imports.h" |
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29 | #include "main/macros.h" |
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30 | |||
31 | #include "s_context.h" |
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32 | #include "s_logic.h" |
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33 | #include "s_span.h" |
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34 | |||
35 | |||
36 | /** |
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37 | * We do all logic ops on 4-byte GLuints. |
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38 | * Depending on bytes per pixel, the mask array elements correspond to |
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39 | * 1, 2 or 4 GLuints. |
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40 | */ |
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41 | #define LOGIC_OP_LOOP(MODE, MASKSTRIDE) \ |
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42 | do { \ |
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43 | GLuint i; \ |
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44 | switch (MODE) { \ |
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45 | case GL_CLEAR: \ |
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46 | for (i = 0; i < n; i++) { \ |
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47 | if (mask[i / MASKSTRIDE]) { \ |
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48 | src[i] = 0; \ |
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49 | } \ |
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50 | } \ |
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51 | break; \ |
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52 | case GL_SET: \ |
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53 | for (i = 0; i < n; i++) { \ |
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54 | if (mask[i / MASKSTRIDE]) { \ |
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55 | src[i] = ~0; \ |
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56 | } \ |
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57 | } \ |
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58 | break; \ |
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59 | case GL_COPY: \ |
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60 | /* do nothing */ \ |
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61 | break; \ |
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62 | case GL_COPY_INVERTED: \ |
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63 | for (i = 0; i < n; i++) { \ |
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64 | if (mask[i / MASKSTRIDE]) { \ |
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65 | src[i] = ~src[i]; \ |
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66 | } \ |
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67 | } \ |
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68 | break; \ |
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69 | case GL_NOOP: \ |
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70 | for (i = 0; i < n; i++) { \ |
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71 | if (mask[i / MASKSTRIDE]) { \ |
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72 | src[i] = dest[i]; \ |
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73 | } \ |
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74 | } \ |
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75 | break; \ |
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76 | case GL_INVERT: \ |
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77 | for (i = 0; i < n; i++) { \ |
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78 | if (mask[i / MASKSTRIDE]) { \ |
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79 | src[i] = ~dest[i]; \ |
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80 | } \ |
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81 | } \ |
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82 | break; \ |
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83 | case GL_AND: \ |
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84 | for (i = 0; i < n; i++) { \ |
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85 | if (mask[i / MASKSTRIDE]) { \ |
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86 | src[i] &= dest[i]; \ |
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87 | } \ |
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88 | } \ |
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89 | break; \ |
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90 | case GL_NAND: \ |
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91 | for (i = 0; i < n; i++) { \ |
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92 | if (mask[i / MASKSTRIDE]) { \ |
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93 | src[i] = ~(src[i] & dest[i]); \ |
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94 | } \ |
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95 | } \ |
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96 | break; \ |
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97 | case GL_OR: \ |
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98 | for (i = 0; i < n; i++) { \ |
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99 | if (mask[i / MASKSTRIDE]) { \ |
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100 | src[i] |= dest[i]; \ |
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101 | } \ |
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102 | } \ |
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103 | break; \ |
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104 | case GL_NOR: \ |
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105 | for (i = 0; i < n; i++) { \ |
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106 | if (mask[i / MASKSTRIDE]) { \ |
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107 | src[i] = ~(src[i] | dest[i]); \ |
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108 | } \ |
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109 | } \ |
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110 | break; \ |
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111 | case GL_XOR: \ |
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112 | for (i = 0; i < n; i++) { \ |
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113 | if (mask[i / MASKSTRIDE]) { \ |
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114 | src[i] ^= dest[i]; \ |
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115 | } \ |
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116 | } \ |
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117 | break; \ |
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118 | case GL_EQUIV: \ |
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119 | for (i = 0; i < n; i++) { \ |
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120 | if (mask[i / MASKSTRIDE]) { \ |
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121 | src[i] = ~(src[i] ^ dest[i]); \ |
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122 | } \ |
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123 | } \ |
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124 | break; \ |
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125 | case GL_AND_REVERSE: \ |
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126 | for (i = 0; i < n; i++) { \ |
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127 | if (mask[i / MASKSTRIDE]) { \ |
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128 | src[i] = src[i] & ~dest[i]; \ |
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129 | } \ |
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130 | } \ |
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131 | break; \ |
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132 | case GL_AND_INVERTED: \ |
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133 | for (i = 0; i < n; i++) { \ |
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134 | if (mask[i / MASKSTRIDE]) { \ |
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135 | src[i] = ~src[i] & dest[i]; \ |
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136 | } \ |
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137 | } \ |
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138 | break; \ |
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139 | case GL_OR_REVERSE: \ |
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140 | for (i = 0; i < n; i++) { \ |
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141 | if (mask[i / MASKSTRIDE]) { \ |
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142 | src[i] = src[i] | ~dest[i]; \ |
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143 | } \ |
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144 | } \ |
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145 | break; \ |
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146 | case GL_OR_INVERTED: \ |
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147 | for (i = 0; i < n; i++) { \ |
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148 | if (mask[i / MASKSTRIDE]) { \ |
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149 | src[i] = ~src[i] | dest[i]; \ |
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150 | } \ |
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151 | } \ |
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152 | break; \ |
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153 | default: \ |
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154 | _mesa_problem(ctx, "bad logicop mode");\ |
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155 | } \ |
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156 | } while (0) |
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157 | |||
158 | |||
159 | |||
160 | static inline void |
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161 | logicop_uint1(struct gl_context *ctx, GLuint n, GLuint src[], const GLuint dest[], |
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162 | const GLubyte mask[]) |
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163 | { |
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164 | LOGIC_OP_LOOP(ctx->Color.LogicOp, 1); |
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165 | } |
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166 | |||
167 | |||
168 | static inline void |
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169 | logicop_uint2(struct gl_context *ctx, GLuint n, GLuint src[], const GLuint dest[], |
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170 | const GLubyte mask[]) |
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171 | { |
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172 | LOGIC_OP_LOOP(ctx->Color.LogicOp, 2); |
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173 | } |
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174 | |||
175 | |||
176 | static inline void |
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177 | logicop_uint4(struct gl_context *ctx, GLuint n, GLuint src[], const GLuint dest[], |
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178 | const GLubyte mask[]) |
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179 | { |
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180 | LOGIC_OP_LOOP(ctx->Color.LogicOp, 4); |
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181 | } |
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182 | |||
183 | |||
184 | |||
185 | /** |
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186 | * Apply the current logic operator to a span of RGBA pixels. |
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187 | * We can handle horizontal runs of pixels (spans) or arrays of x/y |
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188 | * pixel coordinates. |
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189 | */ |
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190 | void |
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191 | _swrast_logicop_rgba_span(struct gl_context *ctx, struct gl_renderbuffer *rb, |
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192 | SWspan *span) |
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193 | { |
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194 | void *rbPixels; |
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195 | |||
196 | assert(span->end < SWRAST_MAX_WIDTH); |
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197 | assert(span->arrayMask & SPAN_RGBA); |
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198 | |||
199 | rbPixels = _swrast_get_dest_rgba(ctx, rb, span); |
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200 | |||
201 | if (span->array->ChanType == GL_UNSIGNED_BYTE) { |
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202 | /* treat 4*GLubyte as GLuint */ |
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203 | logicop_uint1(ctx, span->end, |
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204 | (GLuint *) span->array->rgba8, |
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205 | (const GLuint *) rbPixels, span->array->mask); |
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206 | } |
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207 | else if (span->array->ChanType == GL_UNSIGNED_SHORT) { |
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208 | /* treat 2*GLushort as GLuint */ |
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209 | logicop_uint2(ctx, 2 * span->end, |
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210 | (GLuint *) span->array->rgba16, |
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211 | (const GLuint *) rbPixels, span->array->mask); |
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212 | } |
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213 | else { |
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214 | logicop_uint4(ctx, 4 * span->end, |
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215 | (GLuint *) span->array->attribs[VARYING_SLOT_COL0], |
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216 | (const GLuint *) rbPixels, span->array->mask); |
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217 | } |
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218 | }>>>>>>>>>>>>>>>> |