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4349 | Serge | 1 | /* |
2 | * Copyright © 2009 Red Hat, Inc. |
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3 | * Copyright © 2000 SuSE, Inc. |
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4 | * Copyright © 2007 Red Hat, Inc. |
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5 | * Copyright © 2000 Keith Packard, member of The XFree86 Project, Inc. |
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6 | * 2005 Lars Knoll & Zack Rusin, Trolltech |
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7 | * 2008 Aaron Plattner, NVIDIA Corporation |
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8 | * |
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9 | * Permission to use, copy, modify, distribute, and sell this software and its |
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10 | * documentation for any purpose is hereby granted without fee, provided that |
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11 | * the above copyright notice appear in all copies and that both that |
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12 | * copyright notice and this permission notice appear in supporting |
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13 | * documentation, and that the name of Red Hat not be used in advertising or |
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14 | * publicity pertaining to distribution of the software without specific, |
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15 | * written prior permission. Red Hat makes no representations about the |
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16 | * suitability of this software for any purpose. It is provided "as is" |
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17 | * without express or implied warranty. |
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18 | * |
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19 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS |
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20 | * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND |
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21 | * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY |
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22 | * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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23 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN |
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24 | * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING |
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25 | * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS |
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26 | * SOFTWARE. |
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27 | */ |
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28 | #ifdef HAVE_CONFIG_H |
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29 | #include |
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30 | #endif |
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31 | #include |
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32 | #include |
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33 | #include |
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34 | #include |
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35 | #include |
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36 | #include |
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37 | #include |
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38 | #include "pixman-private.h" |
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39 | |||
40 | static pixman_bool_t |
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41 | general_src_iter_init (pixman_implementation_t *imp, pixman_iter_t *iter) |
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42 | { |
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43 | pixman_image_t *image = iter->image; |
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44 | |||
45 | if (image->type == LINEAR) |
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46 | _pixman_linear_gradient_iter_init (image, iter); |
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47 | else if (image->type == RADIAL) |
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48 | _pixman_radial_gradient_iter_init (image, iter); |
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49 | else if (image->type == CONICAL) |
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50 | _pixman_conical_gradient_iter_init (image, iter); |
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51 | else if (image->type == BITS) |
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52 | _pixman_bits_image_src_iter_init (image, iter); |
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53 | else if (image->type == SOLID) |
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54 | _pixman_log_error (FUNC, "Solid image not handled by noop"); |
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55 | else |
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56 | _pixman_log_error (FUNC, "Pixman bug: unknown image type\n"); |
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57 | |||
58 | return TRUE; |
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59 | } |
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60 | |||
61 | static pixman_bool_t |
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62 | general_dest_iter_init (pixman_implementation_t *imp, pixman_iter_t *iter) |
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63 | { |
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64 | if (iter->image->type == BITS) |
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65 | { |
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66 | _pixman_bits_image_dest_iter_init (iter->image, iter); |
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67 | |||
68 | return TRUE; |
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69 | } |
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70 | else |
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71 | { |
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72 | _pixman_log_error (FUNC, "Trying to write to a non-writable image"); |
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73 | |||
74 | return FALSE; |
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75 | } |
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76 | } |
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77 | |||
78 | typedef struct op_info_t op_info_t; |
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79 | struct op_info_t |
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80 | { |
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81 | uint8_t src, dst; |
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82 | }; |
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83 | |||
84 | #define ITER_IGNORE_BOTH \ |
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85 | (ITER_IGNORE_ALPHA | ITER_IGNORE_RGB | ITER_LOCALIZED_ALPHA) |
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86 | |||
87 | static const op_info_t op_flags[PIXMAN_N_OPERATORS] = |
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88 | { |
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89 | /* Src Dst */ |
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90 | { ITER_IGNORE_BOTH, ITER_IGNORE_BOTH }, /* CLEAR */ |
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91 | { ITER_LOCALIZED_ALPHA, ITER_IGNORE_BOTH }, /* SRC */ |
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92 | { ITER_IGNORE_BOTH, ITER_LOCALIZED_ALPHA }, /* DST */ |
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93 | { 0, ITER_LOCALIZED_ALPHA }, /* OVER */ |
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94 | { ITER_LOCALIZED_ALPHA, 0 }, /* OVER_REVERSE */ |
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95 | { ITER_LOCALIZED_ALPHA, ITER_IGNORE_RGB }, /* IN */ |
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96 | { ITER_IGNORE_RGB, ITER_LOCALIZED_ALPHA }, /* IN_REVERSE */ |
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97 | { ITER_LOCALIZED_ALPHA, ITER_IGNORE_RGB }, /* OUT */ |
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98 | { ITER_IGNORE_RGB, ITER_LOCALIZED_ALPHA }, /* OUT_REVERSE */ |
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99 | { 0, 0 }, /* ATOP */ |
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100 | { 0, 0 }, /* ATOP_REVERSE */ |
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101 | { 0, 0 }, /* XOR */ |
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102 | { ITER_LOCALIZED_ALPHA, ITER_LOCALIZED_ALPHA }, /* ADD */ |
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103 | { 0, 0 }, /* SATURATE */ |
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104 | }; |
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105 | |||
106 | #define SCANLINE_BUFFER_LENGTH 8192 |
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107 | |||
108 | static void |
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109 | general_composite_rect (pixman_implementation_t *imp, |
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110 | pixman_composite_info_t *info) |
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111 | { |
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112 | PIXMAN_COMPOSITE_ARGS (info); |
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113 | uint64_t stack_scanline_buffer[(SCANLINE_BUFFER_LENGTH * 3 + 7) / 8]; |
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114 | uint8_t *scanline_buffer = (uint8_t *) stack_scanline_buffer; |
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115 | uint8_t *src_buffer, *mask_buffer, *dest_buffer; |
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116 | pixman_iter_t src_iter, mask_iter, dest_iter; |
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117 | pixman_combine_32_func_t compose; |
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118 | pixman_bool_t component_alpha; |
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119 | iter_flags_t narrow, src_iter_flags; |
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120 | int Bpp; |
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121 | int i; |
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122 | |||
123 | if ((src_image->common.flags & FAST_PATH_NARROW_FORMAT) && |
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124 | (!mask_image || mask_image->common.flags & FAST_PATH_NARROW_FORMAT) && |
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125 | (dest_image->common.flags & FAST_PATH_NARROW_FORMAT)) |
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126 | { |
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127 | narrow = ITER_NARROW; |
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128 | Bpp = 4; |
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129 | } |
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130 | else |
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131 | { |
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132 | narrow = 0; |
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133 | Bpp = 16; |
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134 | } |
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135 | |||
136 | if (width * Bpp > SCANLINE_BUFFER_LENGTH) |
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137 | { |
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138 | scanline_buffer = pixman_malloc_abc (width, 3, Bpp); |
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139 | |||
140 | if (!scanline_buffer) |
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141 | return; |
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142 | } |
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143 | |||
144 | src_buffer = scanline_buffer; |
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145 | mask_buffer = src_buffer + width * Bpp; |
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146 | dest_buffer = mask_buffer + width * Bpp; |
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147 | |||
148 | if (!narrow) |
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149 | { |
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150 | /* To make sure there aren't any NANs in the buffers */ |
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151 | memset (src_buffer, 0, width * Bpp); |
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152 | memset (mask_buffer, 0, width * Bpp); |
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153 | memset (dest_buffer, 0, width * Bpp); |
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154 | } |
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155 | |||
156 | /* src iter */ |
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157 | src_iter_flags = narrow | op_flags[op].src; |
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158 | |||
159 | _pixman_implementation_src_iter_init (imp->toplevel, &src_iter, src_image, |
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160 | src_x, src_y, width, height, |
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161 | src_buffer, src_iter_flags, info->src_flags); |
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162 | |||
163 | /* mask iter */ |
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164 | if ((src_iter_flags & (ITER_IGNORE_ALPHA | ITER_IGNORE_RGB)) == |
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165 | (ITER_IGNORE_ALPHA | ITER_IGNORE_RGB)) |
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166 | { |
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167 | /* If it doesn't matter what the source is, then it doesn't matter |
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168 | * what the mask is |
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169 | */ |
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170 | mask_image = NULL; |
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171 | } |
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172 | |||
173 | component_alpha = |
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174 | mask_image && |
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175 | mask_image->common.type == BITS && |
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176 | mask_image->common.component_alpha && |
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177 | PIXMAN_FORMAT_RGB (mask_image->bits.format); |
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178 | |||
179 | _pixman_implementation_src_iter_init ( |
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180 | imp->toplevel, &mask_iter, mask_image, mask_x, mask_y, width, height, |
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181 | mask_buffer, narrow | (component_alpha? 0 : ITER_IGNORE_RGB), info->mask_flags); |
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182 | |||
183 | /* dest iter */ |
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184 | _pixman_implementation_dest_iter_init ( |
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185 | imp->toplevel, &dest_iter, dest_image, dest_x, dest_y, width, height, |
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186 | dest_buffer, narrow | op_flags[op].dst, info->dest_flags); |
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187 | |||
188 | compose = _pixman_implementation_lookup_combiner ( |
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189 | imp->toplevel, op, component_alpha, narrow); |
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190 | |||
191 | for (i = 0; i < height; ++i) |
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192 | { |
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193 | uint32_t *s, *m, *d; |
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194 | |||
195 | m = mask_iter.get_scanline (&mask_iter, NULL); |
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196 | s = src_iter.get_scanline (&src_iter, m); |
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197 | d = dest_iter.get_scanline (&dest_iter, NULL); |
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198 | |||
199 | compose (imp->toplevel, op, d, s, m, width); |
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200 | |||
201 | dest_iter.write_back (&dest_iter); |
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202 | } |
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203 | |||
204 | if (scanline_buffer != (uint8_t *) stack_scanline_buffer) |
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205 | free (scanline_buffer); |
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206 | } |
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207 | |||
208 | static const pixman_fast_path_t general_fast_path[] = |
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209 | { |
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210 | { PIXMAN_OP_any, PIXMAN_any, 0, PIXMAN_any, 0, PIXMAN_any, 0, general_composite_rect }, |
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211 | { PIXMAN_OP_NONE } |
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212 | }; |
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213 | |||
214 | pixman_implementation_t * |
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215 | _pixman_implementation_create_general (void) |
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216 | { |
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217 | pixman_implementation_t *imp = _pixman_implementation_create (NULL, general_fast_path); |
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218 | |||
219 | _pixman_setup_combiner_functions_32 (imp); |
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220 | _pixman_setup_combiner_functions_float (imp); |
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221 | |||
222 | imp->src_iter_init = general_src_iter_init; |
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223 | imp->dest_iter_init = general_dest_iter_init; |
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224 | |||
225 | return imp; |
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226 | }> |
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227 |