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no bilinearing filtering on exact multiples

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@4178
This commit is contained in:
Peter Veenstra 2018-12-17 19:22:30 +00:00
parent f5e4b9205f
commit c9f79add62
1 changed files with 4 additions and 4 deletions
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8
src/gui/sdlmain.cpp
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@ -719,12 +719,12 @@ dosurface:
// No borders
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
if (sdl.opengl.bilinear) {
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
} else {
if (!sdl.opengl.bilinear || ( (sdl.clip.h % height) == 0 && (sdl.clip.w % width) == 0) ) {
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
} else {
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
}
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, texsize, texsize, 0, GL_BGRA_EXT, GL_UNSIGNED_BYTE, 0);