kc3-lang/SDL/src/render

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• Hash : d23d9c88
  Author :
  Date : 2014-07-07T23:26:34
  

  Fixed bug 2421 - SDL_RenderCopyEx off by one when rotating by 90 and -90 chasesan When using SDL_RenderCopyEx, I get a problem on some platforms where the output is offset by +/-1 on other platforms and not on others. I tried it with a center of both 0,0 (and offsetting by width/height) and NULL (for centered). The rotation involved is 90, and/or -90 rotation. The rotation was a constant, no arithmetic was involved when inputting it into SDL_RenderCopyEx. This occurred with 32x32, 24x24, and 16x16 texture sizes. I apologize that I don't have more precise information, as I received the information as a bug report myself. But I have tracked the problem down to here. My program requires pixel perfect alignment on several different platforms, so this is something of a showstopper for me. -- Sylvain It appears the RenderCopyEx is done as expected, this is the red rectangle which is not correctly positionned ! So, here's patch with a 0.5 float increment, like for opengles2, for DrawLines, and also Draw Points.

• Files

• SDL_d3dmath.c
• SDL_d3dmath.h
• SDL_render.c
• SDL_sysrender.h
• SDL_yuv_mmx.c
• SDL_yuv_sw.c
• SDL_yuv_sw_c.h
• direct3d/
• direct3d11/
• mmx.h
• opengl/
• opengles/
• opengles2/
• psp/
• software/

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• Git HTTP	https://git.kmx.io/kc3-lang/SDL.git
  Git SSH	git@git.kmx.io:kc3-lang/SDL.git
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  Description	Fork of https://github.com/libsdl-org/SDL
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