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Added the SDL_HINT_RENDER_SCALE_QUALITY hint, which defaults to nearest pixel sampling.

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This commit is contained in:
Sam Lantinga 2011-03-13 11:18:35 -07:00
parent fbc49beee3
commit a19e258730
5 changed files with 79 additions and 9 deletions
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14
src/render/opengl/SDL_render_gl.c
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@ -393,6 +393,18 @@ convert_format(GL_RenderData *renderdata, Uint32 pixel_format,
return SDL_TRUE;
}
static GLenum
GetScaleQuality(void)
{
const char *hint = SDL_GetHint(SDL_HINT_RENDER_SCALE_QUALITY);
if (!hint || *hint == '0' || SDL_strcasecmp(hint, "nearest") == 0) {
return GL_NEAREST;
} else {
return GL_LINEAR;
}
}
static int
GL_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
@ -455,7 +467,7 @@ GL_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
data->format = format;
data->formattype = type;
data->scaleMode = GL_LINEAR;
data->scaleMode = GetScaleQuality();
renderdata->glEnable(data->type);
renderdata->glBindTexture(data->type, data->texture);
renderdata->glTexParameteri(data->type, GL_TEXTURE_WRAP_S,