Blame 3Depict-0.0.9-png-gray.patch
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diff -r src/pngread.c src/pngread.c
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--- src/pngread.c
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+++ src/pngread.c
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@@ -132,11 +132,7 @@ int read_png(FILE *fp, unsigned int sig_read, png_bytep **row_pointers,
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/* Expand grayscale images to the full 8 bits from 1, 2, or 4 bits/pixel */
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if (color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8)
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{
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-#if defined(__APPLE__) || defined(__WIN32) || defined(__WIN64)
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png_set_expand_gray_1_2_4_to_8(png_ptr);
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-#else
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- png_set_gray_1_2_4_to_8(png_ptr);
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-#endif
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}
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/* Expand paletted or RGB images with transparency to full alpha for RGBA */
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