Mercurial > sdl-ios-xcode
view src/video/Xext/README @ 3707:d8308bc267bc
Adam Strzelecki to SDL
When graphic card has no GL_ARB_texture_rectangle YUV textures mapped with SDL_RenderCopy are stretched 2x horizontally, so only left half of texture is visible. This is due:
data->texw = (GLfloat) (texture->w) / texture_w;
data->texh = (GLfloat) texture->h / texture_h;
But afterwards texture_w /= 2 for YUV texture, but data->texw stays as it was before, while it should be multiplied 2x.
This bug can be seen in any program setting env variables: GL_APPLE_ycbcr_422=0 GL_EXT_texture_rectangle=0 GL_ARB_texture_rectangle=0
author | Sam Lantinga <slouken@libsdl.org> |
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date | Wed, 17 Feb 2010 04:42:52 +0000 |
parents | b87d8d4c205d |
children |
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The reason these libraries are built outside of the standard XFree86 tree is so that they can be linked as shared object code directly into SDL without causing any symbol collisions with code in the application. You can't link static library code into shared libraries on non-x86 Linux platforms. Since these libraries haven't become standard yet, we'll just include them directly. These sources are synchronized with XFree86 4.2.1