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Rev | Author | Line No. | Line |
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4680 | right-hear | 1 | #include "fitz.h" |
2 | |||
3 | typedef unsigned char byte; |
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4 | |||
5 | static inline float roundup(float x) |
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6 | { |
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7 | return (x < 0) ? floorf(x) : ceilf(x); |
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8 | } |
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9 | |||
10 | static inline int lerp(int a, int b, int t) |
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11 | { |
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12 | return a + (((b - a) * t) >> 16); |
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13 | } |
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14 | |||
15 | static inline int bilerp(int a, int b, int c, int d, int u, int v) |
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16 | { |
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17 | return lerp(lerp(a, b, u), lerp(c, d, u), v); |
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18 | } |
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19 | |||
20 | static inline byte *sample_nearest(byte *s, int w, int h, int n, int u, int v) |
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21 | { |
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22 | if (u < 0) u = 0; |
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23 | if (v < 0) v = 0; |
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24 | if (u >= w) u = w - 1; |
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25 | if (v >= h) v = h - 1; |
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26 | return s + (v * w + u) * n; |
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27 | } |
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28 | |||
29 | /* Blend premultiplied source image in constant alpha over destination */ |
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30 | |||
31 | static inline void |
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32 | fz_paint_affine_alpha_N_lerp(byte *dp, byte *sp, int sw, int sh, int u, int v, int fa, int fb, int w, int n, int alpha, byte *hp) |
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33 | { |
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34 | int k; |
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35 | int n1 = n-1; |
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36 | |||
37 | while (w--) |
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38 | { |
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39 | int ui = u >> 16; |
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40 | int vi = v >> 16; |
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41 | if (ui >= 0 && ui < sw && vi >= 0 && vi < sh) |
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42 | { |
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43 | int uf = u & 0xffff; |
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44 | int vf = v & 0xffff; |
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45 | byte *a = sample_nearest(sp, sw, sh, n, ui, vi); |
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46 | byte *b = sample_nearest(sp, sw, sh, n, ui+1, vi); |
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47 | byte *c = sample_nearest(sp, sw, sh, n, ui, vi+1); |
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48 | byte *d = sample_nearest(sp, sw, sh, n, ui+1, vi+1); |
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49 | int xa = bilerp(a[n1], b[n1], c[n1], d[n1], uf, vf); |
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50 | int t; |
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51 | xa = fz_mul255(xa, alpha); |
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52 | t = 255 - xa; |
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53 | for (k = 0; k < n1; k++) |
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54 | { |
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55 | int x = bilerp(a[k], b[k], c[k], d[k], uf, vf); |
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56 | dp[k] = fz_mul255(x, alpha) + fz_mul255(dp[k], t); |
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57 | } |
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58 | dp[n1] = xa + fz_mul255(dp[n1], t); |
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59 | if (hp) |
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60 | hp[0] = xa + fz_mul255(hp[n1], t); |
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61 | } |
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62 | dp += n; |
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63 | if (hp) |
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64 | hp++; |
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65 | u += fa; |
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66 | v += fb; |
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67 | } |
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68 | } |
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69 | |||
70 | /* Special case code for gray -> rgb */ |
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71 | static inline void |
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72 | fz_paint_affine_alpha_g2rgb_lerp(byte *dp, byte *sp, int sw, int sh, int u, int v, int fa, int fb, int w, int alpha, byte *hp) |
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73 | { |
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74 | while (w--) |
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75 | { |
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76 | int ui = u >> 16; |
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77 | int vi = v >> 16; |
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78 | if (ui >= 0 && ui < sw && vi >= 0 && vi < sh) |
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79 | { |
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80 | int uf = u & 0xffff; |
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81 | int vf = v & 0xffff; |
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82 | byte *a = sample_nearest(sp, sw, sh, 2, ui, vi); |
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83 | byte *b = sample_nearest(sp, sw, sh, 2, ui+1, vi); |
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84 | byte *c = sample_nearest(sp, sw, sh, 2, ui, vi+1); |
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85 | byte *d = sample_nearest(sp, sw, sh, 2, ui+1, vi+1); |
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86 | int y = bilerp(a[1], b[1], c[1], d[1], uf, vf); |
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87 | int x = bilerp(a[0], b[0], c[0], d[0], uf, vf); |
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88 | int t; |
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89 | x = fz_mul255(x, alpha); |
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90 | y = fz_mul255(y, alpha); |
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91 | t = 255 - y; |
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92 | dp[0] = x + fz_mul255(dp[0], t); |
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93 | dp[1] = x + fz_mul255(dp[1], t); |
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94 | dp[2] = x + fz_mul255(dp[2], t); |
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95 | dp[3] = y + fz_mul255(dp[3], t); |
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96 | if (hp) |
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97 | hp[0] = y + fz_mul255(hp[0], t); |
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98 | } |
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99 | dp += 4; |
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100 | if (hp) |
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101 | hp++; |
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102 | u += fa; |
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103 | v += fb; |
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104 | } |
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105 | } |
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106 | |||
107 | static inline void |
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108 | fz_paint_affine_alpha_N_near(byte *dp, byte *sp, int sw, int sh, int u, int v, int fa, int fb, int w, int n, int alpha, byte *hp) |
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109 | { |
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110 | int k; |
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111 | int n1 = n-1; |
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112 | |||
113 | while (w--) |
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114 | { |
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115 | int ui = u >> 16; |
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116 | int vi = v >> 16; |
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117 | if (ui >= 0 && ui < sw && vi >= 0 && vi < sh) |
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118 | { |
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119 | byte *sample = sp + ((vi * sw + ui) * n); |
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120 | int a = fz_mul255(sample[n-1], alpha); |
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121 | int t = 255 - a; |
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122 | for (k = 0; k < n1; k++) |
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123 | dp[k] = fz_mul255(sample[k], alpha) + fz_mul255(dp[k], t); |
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124 | dp[n1] = a + fz_mul255(dp[n1], t); |
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125 | if (hp) |
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126 | hp[0] = a + fz_mul255(hp[n1], t); |
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127 | } |
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128 | dp += n; |
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129 | if (hp) |
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130 | hp++; |
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131 | u += fa; |
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132 | v += fb; |
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133 | } |
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134 | } |
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135 | |||
136 | static inline void |
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137 | fz_paint_affine_alpha_g2rgb_near(byte *dp, byte *sp, int sw, int sh, int u, int v, int fa, int fb, int w, int alpha, byte *hp) |
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138 | { |
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139 | while (w--) |
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140 | { |
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141 | int ui = u >> 16; |
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142 | int vi = v >> 16; |
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143 | if (ui >= 0 && ui < sw && vi >= 0 && vi < sh) |
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144 | { |
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145 | byte *sample = sp + ((vi * sw + ui) * 2); |
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146 | int x = fz_mul255(sample[0], alpha); |
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147 | int a = fz_mul255(sample[1], alpha); |
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148 | int t = 255 - a; |
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149 | dp[0] = x + fz_mul255(dp[0], t); |
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150 | dp[1] = x + fz_mul255(dp[1], t); |
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151 | dp[2] = x + fz_mul255(dp[2], t); |
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152 | dp[3] = a + fz_mul255(dp[3], t); |
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153 | if (hp) |
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154 | hp[0] = a + fz_mul255(hp[0], t); |
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155 | } |
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156 | dp += 4; |
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157 | if (hp) |
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158 | hp++; |
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159 | u += fa; |
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160 | v += fb; |
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161 | } |
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162 | } |
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163 | |||
164 | /* Blend premultiplied source image over destination */ |
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165 | |||
166 | static inline void |
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167 | fz_paint_affine_N_lerp(byte *dp, byte *sp, int sw, int sh, int u, int v, int fa, int fb, int w, int n, byte *hp) |
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168 | { |
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169 | int k; |
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170 | int n1 = n-1; |
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171 | |||
172 | while (w--) |
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173 | { |
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174 | int ui = u >> 16; |
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175 | int vi = v >> 16; |
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176 | if (ui >= 0 && ui < sw && vi >= 0 && vi < sh) |
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177 | { |
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178 | int uf = u & 0xffff; |
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179 | int vf = v & 0xffff; |
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180 | byte *a = sample_nearest(sp, sw, sh, n, ui, vi); |
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181 | byte *b = sample_nearest(sp, sw, sh, n, ui+1, vi); |
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182 | byte *c = sample_nearest(sp, sw, sh, n, ui, vi+1); |
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183 | byte *d = sample_nearest(sp, sw, sh, n, ui+1, vi+1); |
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184 | int y = bilerp(a[n1], b[n1], c[n1], d[n1], uf, vf); |
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185 | int t = 255 - y; |
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186 | for (k = 0; k < n1; k++) |
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187 | { |
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188 | int x = bilerp(a[k], b[k], c[k], d[k], uf, vf); |
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189 | dp[k] = x + fz_mul255(dp[k], t); |
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190 | } |
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191 | dp[n1] = y + fz_mul255(dp[n1], t); |
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192 | if (hp) |
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193 | hp[0] = y + fz_mul255(hp[0], t); |
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194 | } |
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195 | dp += n; |
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196 | if (hp) |
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197 | hp++; |
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198 | u += fa; |
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199 | v += fb; |
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200 | } |
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201 | } |
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202 | |||
203 | static inline void |
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204 | fz_paint_affine_solid_g2rgb_lerp(byte *dp, byte *sp, int sw, int sh, int u, int v, int fa, int fb, int w, byte *hp) |
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205 | { |
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206 | while (w--) |
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207 | { |
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208 | int ui = u >> 16; |
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209 | int vi = v >> 16; |
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210 | if (ui >= 0 && ui < sw && vi >= 0 && vi < sh) |
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211 | { |
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212 | int uf = u & 0xffff; |
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213 | int vf = v & 0xffff; |
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214 | byte *a = sample_nearest(sp, sw, sh, 2, ui, vi); |
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215 | byte *b = sample_nearest(sp, sw, sh, 2, ui+1, vi); |
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216 | byte *c = sample_nearest(sp, sw, sh, 2, ui, vi+1); |
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217 | byte *d = sample_nearest(sp, sw, sh, 2, ui+1, vi+1); |
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218 | int y = bilerp(a[1], b[1], c[1], d[1], uf, vf); |
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219 | int t = 255 - y; |
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220 | int x = bilerp(a[0], b[0], c[0], d[0], uf, vf); |
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221 | dp[0] = x + fz_mul255(dp[0], t); |
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222 | dp[1] = x + fz_mul255(dp[1], t); |
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223 | dp[2] = x + fz_mul255(dp[2], t); |
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224 | dp[3] = y + fz_mul255(dp[3], t); |
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225 | if (hp) |
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226 | hp[0] = y + fz_mul255(hp[0], t); |
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227 | } |
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228 | dp += 4; |
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229 | if (hp) |
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230 | hp++; |
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231 | u += fa; |
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232 | v += fb; |
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233 | } |
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234 | } |
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235 | |||
236 | static inline void |
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237 | fz_paint_affine_N_near(byte *dp, byte *sp, int sw, int sh, int u, int v, int fa, int fb, int w, int n, byte *hp) |
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238 | { |
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239 | int k; |
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240 | int n1 = n-1; |
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241 | |||
242 | while (w--) |
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243 | { |
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244 | int ui = u >> 16; |
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245 | int vi = v >> 16; |
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246 | if (ui >= 0 && ui < sw && vi >= 0 && vi < sh) |
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247 | { |
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248 | byte *sample = sp + ((vi * sw + ui) * n); |
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249 | int a = sample[n1]; |
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250 | int t = 255 - a; |
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251 | for (k = 0; k < n1; k++) |
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252 | dp[k] = sample[k] + fz_mul255(dp[k], t); |
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253 | dp[n1] = a + fz_mul255(dp[n1], t); |
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254 | if (hp) |
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255 | hp[0] = a + fz_mul255(hp[0], t); |
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256 | } |
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257 | dp += n; |
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258 | if (hp) |
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259 | hp++; |
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260 | u += fa; |
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261 | v += fb; |
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262 | } |
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263 | } |
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264 | |||
265 | static inline void |
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266 | fz_paint_affine_solid_g2rgb_near(byte *dp, byte *sp, int sw, int sh, int u, int v, int fa, int fb, int w, byte *hp) |
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267 | { |
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268 | while (w--) |
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269 | { |
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270 | int ui = u >> 16; |
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271 | int vi = v >> 16; |
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272 | if (ui >= 0 && ui < sw && vi >= 0 && vi < sh) |
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273 | { |
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274 | byte *sample = sp + ((vi * sw + ui) * 2); |
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275 | int x = sample[0]; |
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276 | int a = sample[1]; |
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277 | int t = 255 - a; |
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278 | dp[0] = x + fz_mul255(dp[0], t); |
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279 | dp[1] = x + fz_mul255(dp[1], t); |
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280 | dp[2] = x + fz_mul255(dp[2], t); |
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281 | dp[3] = a + fz_mul255(dp[3], t); |
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282 | if (hp) |
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283 | hp[0] = a + fz_mul255(hp[0], t); |
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284 | } |
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285 | dp += 4; |
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286 | if (hp) |
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287 | hp++; |
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288 | u += fa; |
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289 | v += fb; |
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290 | } |
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291 | } |
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292 | |||
293 | /* Blend non-premultiplied color in source image mask over destination */ |
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294 | |||
295 | static inline void |
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296 | fz_paint_affine_color_N_lerp(byte *dp, byte *sp, int sw, int sh, int u, int v, int fa, int fb, int w, int n, byte *color, byte *hp) |
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297 | { |
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298 | int n1 = n - 1; |
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299 | int sa = color[n1]; |
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300 | int k; |
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301 | |||
302 | while (w--) |
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303 | { |
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304 | int ui = u >> 16; |
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305 | int vi = v >> 16; |
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306 | if (ui >= 0 && ui < sw && vi >= 0 && vi < sh) |
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307 | { |
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308 | int uf = u & 0xffff; |
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309 | int vf = v & 0xffff; |
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310 | byte *a = sample_nearest(sp, sw, sh, 1, ui, vi); |
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311 | byte *b = sample_nearest(sp, sw, sh, 1, ui+1, vi); |
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312 | byte *c = sample_nearest(sp, sw, sh, 1, ui, vi+1); |
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313 | byte *d = sample_nearest(sp, sw, sh, 1, ui+1, vi+1); |
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314 | int ma = bilerp(a[0], b[0], c[0], d[0], uf, vf); |
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315 | int masa = FZ_COMBINE(FZ_EXPAND(ma), sa); |
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316 | for (k = 0; k < n1; k++) |
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317 | dp[k] = FZ_BLEND(color[k], dp[k], masa); |
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318 | dp[n1] = FZ_BLEND(255, dp[n1], masa); |
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319 | if (hp) |
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320 | hp[0] = FZ_BLEND(255, hp[0], masa); |
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321 | } |
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322 | dp += n; |
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323 | if (hp) |
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324 | hp++; |
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325 | u += fa; |
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326 | v += fb; |
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327 | } |
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328 | } |
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329 | |||
330 | static inline void |
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331 | fz_paint_affine_color_N_near(byte *dp, byte *sp, int sw, int sh, int u, int v, int fa, int fb, int w, int n, byte *color, byte *hp) |
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332 | { |
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333 | int n1 = n-1; |
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334 | int sa = color[n1]; |
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335 | int k; |
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336 | |||
337 | while (w--) |
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338 | { |
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339 | int ui = u >> 16; |
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340 | int vi = v >> 16; |
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341 | if (ui >= 0 && ui < sw && vi >= 0 && vi < sh) |
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342 | { |
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343 | int ma = sp[vi * sw + ui]; |
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344 | int masa = FZ_COMBINE(FZ_EXPAND(ma), sa); |
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345 | for (k = 0; k < n1; k++) |
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346 | dp[k] = FZ_BLEND(color[k], dp[k], masa); |
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347 | dp[n1] = FZ_BLEND(255, dp[n1], masa); |
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348 | if (hp) |
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349 | hp[n1] = FZ_BLEND(255, hp[n1], masa); |
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350 | } |
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351 | dp += n; |
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352 | if (hp) |
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353 | hp++; |
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354 | u += fa; |
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355 | v += fb; |
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356 | } |
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357 | } |
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358 | |||
359 | static void |
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360 | fz_paint_affine_lerp(byte *dp, byte *sp, int sw, int sh, int u, int v, int fa, int fb, int w, int n, int alpha, byte *color/*unused*/, byte *hp) |
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361 | { |
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362 | if (alpha == 255) |
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363 | { |
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364 | switch (n) |
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365 | { |
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366 | case 1: fz_paint_affine_N_lerp(dp, sp, sw, sh, u, v, fa, fb, w, 1, hp); break; |
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367 | case 2: fz_paint_affine_N_lerp(dp, sp, sw, sh, u, v, fa, fb, w, 2, hp); break; |
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368 | case 4: fz_paint_affine_N_lerp(dp, sp, sw, sh, u, v, fa, fb, w, 4, hp); break; |
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369 | default: fz_paint_affine_N_lerp(dp, sp, sw, sh, u, v, fa, fb, w, n, hp); break; |
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370 | } |
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371 | } |
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372 | else if (alpha > 0) |
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373 | { |
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374 | switch (n) |
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375 | { |
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376 | case 1: fz_paint_affine_alpha_N_lerp(dp, sp, sw, sh, u, v, fa, fb, w, 1, alpha, hp); break; |
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377 | case 2: fz_paint_affine_alpha_N_lerp(dp, sp, sw, sh, u, v, fa, fb, w, 2, alpha, hp); break; |
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378 | case 4: fz_paint_affine_alpha_N_lerp(dp, sp, sw, sh, u, v, fa, fb, w, 4, alpha, hp); break; |
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379 | default: fz_paint_affine_alpha_N_lerp(dp, sp, sw, sh, u, v, fa, fb, w, n, alpha, hp); break; |
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380 | } |
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381 | } |
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382 | } |
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383 | |||
384 | static void |
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385 | fz_paint_affine_g2rgb_lerp(byte *dp, byte *sp, int sw, int sh, int u, int v, int fa, int fb, int w, int n, int alpha, byte *color/*unused*/, byte *hp) |
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386 | { |
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387 | if (alpha == 255) |
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388 | { |
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389 | fz_paint_affine_solid_g2rgb_lerp(dp, sp, sw, sh, u, v, fa, fb, w, hp); |
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390 | } |
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391 | else if (alpha > 0) |
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392 | { |
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393 | fz_paint_affine_alpha_g2rgb_lerp(dp, sp, sw, sh, u, v, fa, fb, w, alpha, hp); |
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394 | } |
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395 | } |
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396 | |||
397 | static void |
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398 | fz_paint_affine_near(byte *dp, byte *sp, int sw, int sh, int u, int v, int fa, int fb, int w, int n, int alpha, byte *color/*unused */, byte *hp) |
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399 | { |
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400 | if (alpha == 255) |
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401 | { |
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402 | switch (n) |
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403 | { |
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404 | case 1: fz_paint_affine_N_near(dp, sp, sw, sh, u, v, fa, fb, w, 1, hp); break; |
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405 | case 2: fz_paint_affine_N_near(dp, sp, sw, sh, u, v, fa, fb, w, 2, hp); break; |
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406 | case 4: fz_paint_affine_N_near(dp, sp, sw, sh, u, v, fa, fb, w, 4, hp); break; |
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407 | default: fz_paint_affine_N_near(dp, sp, sw, sh, u, v, fa, fb, w, n, hp); break; |
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408 | } |
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409 | } |
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410 | else if (alpha > 0) |
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411 | { |
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412 | switch (n) |
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413 | { |
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414 | case 1: fz_paint_affine_alpha_N_near(dp, sp, sw, sh, u, v, fa, fb, w, 1, alpha, hp); break; |
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415 | case 2: fz_paint_affine_alpha_N_near(dp, sp, sw, sh, u, v, fa, fb, w, 2, alpha, hp); break; |
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416 | case 4: fz_paint_affine_alpha_N_near(dp, sp, sw, sh, u, v, fa, fb, w, 4, alpha, hp); break; |
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417 | default: fz_paint_affine_alpha_N_near(dp, sp, sw, sh, u, v, fa, fb, w, n, alpha, hp); break; |
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418 | } |
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419 | } |
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420 | } |
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421 | |||
422 | static void |
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423 | fz_paint_affine_g2rgb_near(byte *dp, byte *sp, int sw, int sh, int u, int v, int fa, int fb, int w, int n, int alpha, byte *color/*unused*/, byte *hp) |
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424 | { |
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425 | if (alpha == 255) |
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426 | { |
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427 | fz_paint_affine_solid_g2rgb_near(dp, sp, sw, sh, u, v, fa, fb, w, hp); |
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428 | } |
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429 | else if (alpha > 0) |
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430 | { |
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431 | fz_paint_affine_alpha_g2rgb_near(dp, sp, sw, sh, u, v, fa, fb, w, alpha, hp); |
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432 | } |
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433 | } |
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434 | |||
435 | static void |
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436 | fz_paint_affine_color_lerp(byte *dp, byte *sp, int sw, int sh, int u, int v, int fa, int fb, int w, int n, int alpha/*unused*/, byte *color, byte *hp) |
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437 | { |
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438 | switch (n) |
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439 | { |
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440 | case 2: fz_paint_affine_color_N_lerp(dp, sp, sw, sh, u, v, fa, fb, w, 2, color, hp); break; |
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441 | case 4: fz_paint_affine_color_N_lerp(dp, sp, sw, sh, u, v, fa, fb, w, 4, color, hp); break; |
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442 | default: fz_paint_affine_color_N_lerp(dp, sp, sw, sh, u, v, fa, fb, w, n, color, hp); break; |
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443 | } |
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444 | } |
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445 | |||
446 | static void |
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447 | fz_paint_affine_color_near(byte *dp, byte *sp, int sw, int sh, int u, int v, int fa, int fb, int w, int n, int alpha/*unused*/, byte *color, byte *hp) |
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448 | { |
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449 | switch (n) |
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450 | { |
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451 | case 2: fz_paint_affine_color_N_near(dp, sp, sw, sh, u, v, fa, fb, w, 2, color, hp); break; |
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452 | case 4: fz_paint_affine_color_N_near(dp, sp, sw, sh, u, v, fa, fb, w, 4, color, hp); break; |
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453 | default: fz_paint_affine_color_N_near(dp, sp, sw, sh, u, v, fa, fb, w, n, color, hp); break; |
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454 | } |
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455 | } |
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456 | |||
457 | /* Draw an image with an affine transform on destination */ |
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458 | |||
459 | static void |
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460 | fz_paint_image_imp(fz_pixmap *dst, fz_bbox scissor, fz_pixmap *shape, fz_pixmap *img, fz_matrix ctm, byte *color, int alpha) |
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461 | { |
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462 | byte *dp, *sp, *hp; |
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463 | int u, v, fa, fb, fc, fd; |
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464 | int x, y, w, h; |
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465 | int sw, sh, n, hw; |
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466 | fz_matrix inv; |
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467 | fz_bbox bbox; |
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468 | int dolerp; |
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469 | void (*paintfn)(byte *dp, byte *sp, int sw, int sh, int u, int v, int fa, int fb, int w, int n, int alpha, byte *color, byte *hp); |
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470 | |||
471 | /* grid fit the image */ |
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472 | if (fz_is_rectilinear(ctm)) |
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473 | { |
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474 | ctm.a = roundup(ctm.a); |
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475 | ctm.b = roundup(ctm.b); |
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476 | ctm.c = roundup(ctm.c); |
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477 | ctm.d = roundup(ctm.d); |
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478 | ctm.e = floorf(ctm.e); |
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479 | ctm.f = floorf(ctm.f); |
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480 | } |
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481 | |||
482 | /* turn on interpolation for upscaled and non-rectilinear transforms */ |
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483 | dolerp = 0; |
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484 | if (!fz_is_rectilinear(ctm)) |
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485 | dolerp = 1; |
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486 | if (sqrtf(ctm.a * ctm.a + ctm.b * ctm.b) > img->w) |
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487 | dolerp = 1; |
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488 | if (sqrtf(ctm.c * ctm.c + ctm.d * ctm.d) > img->h) |
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489 | dolerp = 1; |
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490 | |||
491 | /* except when we shouldn't, at large magnifications */ |
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492 | if (!img->interpolate) |
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493 | { |
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494 | if (sqrtf(ctm.a * ctm.a + ctm.b * ctm.b) > img->w * 2) |
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495 | dolerp = 0; |
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496 | if (sqrtf(ctm.c * ctm.c + ctm.d * ctm.d) > img->h * 2) |
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497 | dolerp = 0; |
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498 | } |
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499 | |||
500 | bbox = fz_round_rect(fz_transform_rect(ctm, fz_unit_rect)); |
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501 | bbox = fz_intersect_bbox(bbox, scissor); |
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502 | x = bbox.x0; |
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503 | y = bbox.y0; |
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504 | w = bbox.x1 - bbox.x0; |
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505 | h = bbox.y1 - bbox.y0; |
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506 | |||
507 | /* map from screen space (x,y) to image space (u,v) */ |
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508 | inv = fz_scale(1.0f / img->w, -1.0f / img->h); |
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509 | inv = fz_concat(inv, fz_translate(0, 1)); |
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510 | inv = fz_concat(inv, ctm); |
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511 | inv = fz_invert_matrix(inv); |
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512 | |||
513 | fa = inv.a * 65536; |
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514 | fb = inv.b * 65536; |
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515 | fc = inv.c * 65536; |
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516 | fd = inv.d * 65536; |
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517 | |||
518 | /* Calculate initial texture positions. Do a half step to start. */ |
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519 | u = (fa * x) + (fc * y) + inv.e * 65536 + ((fa + fc) >> 1); |
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520 | v = (fb * x) + (fd * y) + inv.f * 65536 + ((fb + fd) >> 1); |
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521 | |||
522 | dp = dst->samples + ((y - dst->y) * dst->w + (x - dst->x)) * dst->n; |
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523 | n = dst->n; |
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524 | sp = img->samples; |
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525 | sw = img->w; |
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526 | sh = img->h; |
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527 | if (shape) |
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528 | { |
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529 | hw = shape->w; |
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530 | hp = shape->samples + ((y - shape->y) * hw) + x - dst->x; |
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531 | } |
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532 | else |
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533 | { |
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534 | hw = 0; |
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535 | hp = NULL; |
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536 | } |
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537 | |||
538 | /* TODO: if (fb == 0 && fa == 1) call fz_paint_span */ |
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539 | |||
540 | if (dst->n == 4 && img->n == 2) |
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541 | { |
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542 | assert(color == NULL); |
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543 | if (dolerp) |
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544 | paintfn = fz_paint_affine_g2rgb_lerp; |
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545 | else |
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546 | paintfn = fz_paint_affine_g2rgb_near; |
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547 | } |
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548 | else |
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549 | { |
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550 | if (dolerp) |
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551 | { |
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552 | if (color) |
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553 | paintfn = fz_paint_affine_color_lerp; |
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554 | else |
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555 | paintfn = fz_paint_affine_lerp; |
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556 | } |
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557 | else |
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558 | { |
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559 | if (color) |
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560 | paintfn = fz_paint_affine_color_near; |
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561 | else |
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562 | paintfn = fz_paint_affine_near; |
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563 | } |
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564 | } |
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565 | |||
566 | while (h--) |
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567 | { |
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568 | paintfn(dp, sp, sw, sh, u, v, fa, fb, w, n, alpha, color, hp); |
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569 | dp += dst->w * n; |
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570 | hp += hw; |
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571 | u += fc; |
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572 | v += fd; |
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573 | } |
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574 | } |
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575 | |||
576 | void |
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577 | fz_paint_image_with_color(fz_pixmap *dst, fz_bbox scissor, fz_pixmap *shape, fz_pixmap *img, fz_matrix ctm, byte *color) |
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578 | { |
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579 | assert(img->n == 1); |
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580 | fz_paint_image_imp(dst, scissor, shape, img, ctm, color, 255); |
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581 | } |
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582 | |||
583 | void |
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584 | fz_paint_image(fz_pixmap *dst, fz_bbox scissor, fz_pixmap *shape, fz_pixmap *img, fz_matrix ctm, int alpha) |
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585 | { |
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586 | assert(dst->n == img->n || (dst->n == 4 && img->n == 2)); |
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587 | fz_paint_image_imp(dst, scissor, shape, img, ctm, NULL, alpha); |
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588 | }>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |