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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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15
src/render/opengles/SDL_render_gles.c
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@ -23,6 +23,7 @@
#if SDL_VIDEO_RENDER_OGL_ES && !SDL_RENDER_DISABLED
#include "SDL_hints.h"
#include "SDL_opengles.h"
#include "../SDL_sysrender.h"
@ -292,6 +293,18 @@ power_of_2(int input)
return value;
}
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
GLES_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
@ -345,7 +358,7 @@ GLES_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
data->format = format;
data->formattype = type;
data->scaleMode = GL_LINEAR;
data->scaleMode = GetScaleQuality();
glBindTexture(data->type, data->texture);
glTexParameteri(data->type, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(data->type, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);