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view Makefile.dc @ 1543:98f9b16f565c
From: "Alex Volkov"
Date: Thu, 10 Nov 2005 21:53:40 -0500
Subject: [SDL] BUG[?]: 32bpp RGBA->RGB colorkey blit, no SDL_SRCALPHA
It seems there is either a documentation vs. reality mismatch or a real bug
in SDL_blit_N.c:BlitNtoNKey().
The exact blit in question is a 32bpp RGBA->RGB, where RGBA has SDL_COLORKEY
and *no* SDL_SRCALPHA flags. The doc in SDL_video.h states:
* RGBA->RGB:
* SDL_SRCALPHA not set:
* copy RGB.
* if SDL_SRCCOLORKEY set, only copy the pixels matching the
* RGB values of the source colour key, ignoring alpha in the
* comparison.
BlitNtoNKey(), however, forgets to "ignore alpha in the comparison". The
documentation makes perfect sense, so I think it is the code that is faulty.
The attached patch corrects the code.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Wed, 15 Mar 2006 15:43:15 +0000 |
parents | 38c1eb6b0083 |
children | e49147870aac c8f42ed8805e |
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#GL=1 CC = sh-elf-gcc AR = sh-elf-ar ifdef GL DEFS += -DSDL_VIDEO_OPENGL=1 TARGET = libSDL_gl.a else TARGET = libSDL.a endif CFLAGS=$(KOS_CFLAGS) $(DEFS) -Iinclude SRCS = \ src/audio/dc/SDL_dcaudio.c \ src/audio/dc/aica.c \ src/audio/dummy/SDL_dummyaudio.c \ src/audio/SDL_audio.c \ src/audio/SDL_audiocvt.c \ src/audio/SDL_audiodev.c \ src/audio/SDL_mixer.c \ src/audio/SDL_wave.c \ src/cdrom/dc/SDL_syscdrom.c \ src/cdrom/SDL_cdrom.c \ src/events/SDL_active.c \ src/events/SDL_events.c \ src/events/SDL_expose.c \ src/events/SDL_keyboard.c \ src/events/SDL_mouse.c \ src/events/SDL_quit.c \ src/events/SDL_resize.c \ src/file/SDL_rwops.c \ src/joystick/dc/SDL_sysjoystick.c \ src/joystick/SDL_joystick.c \ src/loadso/dummy/SDL_sysloadso.c \ src/SDL.c \ src/SDL_error.c \ src/SDL_fatal.c \ src/stdlib/SDL_getenv.c \ src/stdlib/SDL_iconv.c \ src/stdlib/SDL_malloc.c \ src/stdlib/SDL_qsort.c \ src/stdlib/SDL_stdlib.c \ src/stdlib/SDL_string.c \ src/thread/dc/SDL_syscond.c \ src/thread/dc/SDL_sysmutex.c \ src/thread/dc/SDL_syssem.c \ src/thread/dc/SDL_systhread.c \ src/thread/SDL_thread.c \ src/timer/dc/SDL_systimer.c \ src/timer/SDL_timer.c \ src/video/dc/SDL_dcevents.c \ src/video/dc/SDL_dcvideo.c \ src/video/dummy/SDL_nullevents.c \ src/video/dummy/SDL_nullmouse.c \ src/video/dummy/SDL_nullvideo.c \ src/video/SDL_blit.c \ src/video/SDL_blit_0.c \ src/video/SDL_blit_1.c \ src/video/SDL_blit_A.c \ src/video/SDL_blit_N.c \ src/video/SDL_bmp.c \ src/video/SDL_cursor.c \ src/video/SDL_gamma.c \ src/video/SDL_pixels.c \ src/video/SDL_RLEaccel.c \ src/video/SDL_stretch.c \ src/video/SDL_surface.c \ src/video/SDL_video.c \ src/video/SDL_yuv.c \ src/video/SDL_yuv_sw.c \ OBJS = $(SRCS:.c=.o) TEST = \ test/checkkeys.c \ test/graywin.c \ test/loopwave.c \ test/testalpha.c \ test/testbitmap.c \ test/testcdrom.c \ test/testerror.c \ test/testgamma.c \ test/testgl.c \ test/testhread.c \ test/testjoystick.c \ test/testkeys.c \ test/testlock.c \ test/testoverlay.c \ test/testpalette.c \ test/testsem.c \ test/testsprite.c \ test/testtimer.c \ test/testtypes.c \ test/testver.c \ test/testvidinfo.c \ test/testwin.c \ test/testwm.c \ test/threadwin.c \ test/torturethread.c \ $(TARGET): $(OBJS) $(AR) rcs $(TARGET) $(OBJS) clean: rm -f $(OBJS)