Lines Matching refs:trans_alpha
334 png_bytep trans_alpha; in ReadPixel1() local
345 if (png_get_tRNS(png_instance, png_info_ptr, &trans_alpha, &num_trans, &trans_color) == 0) in ReadPixel1()
347 trans_alpha = NULL; in ReadPixel1()
356 if ((num_trans > 0) && (trans_alpha[0] == pal_index)) in ReadPixel1()
404 png_bytep trans_alpha; in ReadPixel2() local
414 if (png_get_tRNS(png_instance, png_info_ptr, &trans_alpha, &num_trans, &trans_color) == 0) in ReadPixel2()
416 trans_alpha = NULL; in ReadPixel2()
424 if ((num_trans > 0) && (trans_alpha[0] == pal_index)) in ReadPixel2()
471 png_bytep trans_alpha; in ReadPixel4() local
481 if (png_get_tRNS(png_instance, png_info_ptr, &trans_alpha, &num_trans, &trans_color) == 0) in ReadPixel4()
483 trans_alpha = NULL; in ReadPixel4()
491 if ((num_trans > 0) && (trans_alpha[0] == pal_index)) in ReadPixel4()
538 png_bytep trans_alpha; in ReadPixel8() local
554 if (png_get_tRNS(png_instance, png_info_ptr, &trans_alpha, &num_trans, &trans_color) == 0) in ReadPixel8()
556 trans_alpha = NULL; in ReadPixel8()
572 put->Alpha = trans_alpha[pal_index]; in ReadPixel8()
587 if ((num_trans > 0) && (trans_alpha[0] == pal_index)) in ReadPixel8()