From 51ea33f92fa43b2061385463c1db32d9be7eaaf0 Mon Sep 17 00:00:00 2001 From: rubidium Date: Wed, 14 Apr 2010 16:07:17 +0000 Subject: (svn r19628) -Change: support the tRNS chunk to read transparency information for RGB PNGs (Szvengar) --- src/spriteloader/png.cpp | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'src') diff --git a/src/spriteloader/png.cpp b/src/spriteloader/png.cpp index e72f44010..fa66ae3f1 100644 --- a/src/spriteloader/png.cpp +++ b/src/spriteloader/png.cpp @@ -132,7 +132,12 @@ static bool LoadPNG(SpriteLoader::Sprite *sprite, const char *filename, uint32 i } if (colour_type == PNG_COLOR_TYPE_RGB) { - png_set_filler(png_ptr, 0xff, PNG_FILLER_AFTER); + if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)) { + /* Create an alpha channel when there is a tRNS chunk */ + png_set_tRNS_to_alpha(png_ptr); + } else { + png_set_filler(png_ptr, 0xff, PNG_FILLER_AFTER); + } } pixelsize = sizeof(uint32); -- cgit v1.2.3-70-g09d2