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/PHP-7.4/ext/gd/libgd/
H A Dgd_png.c492 png_byte trans_values[256]; in gdImagePngCtxEx() local
638 trans_values[i] = 255 - ((im->alpha[i] << 1) + (im->alpha[i] >> 6)); in gdImagePngCtxEx()
640 png_set_tRNS (png_ptr, info_ptr, trans_values, 256, NULL); in gdImagePngCtxEx()
656 trans_values[j] = 255 - ((im->alpha[i] << 1) + (im->alpha[i] >> 6)); in gdImagePngCtxEx()
663 png_set_tRNS(png_ptr, info_ptr, trans_values, tc, NULL); in gdImagePngCtxEx()

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