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Merge pull request #343 from damiles/master

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Add image flag to support GL_NEAREST rendering
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Mikko Mononen 2017-01-12 13:46:41 +02:00 • committed by GitHub
commit 8feae63a46
2 changed files with 17 additions and 3 deletions
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1
src/nanovg.h
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@ -141,6 +141,7 @@ enum NVGimageFlags {
NVG_IMAGE_REPEATY = 1<<2, // Repeat image in Y direction.
NVG_IMAGE_FLIPY = 1<<3, // Flips (inverses) image in Y direction when rendered.
NVG_IMAGE_PREMULTIPLIED = 1<<4, // Image data has premultiplied alpha.
NVG_IMAGE_NEAREST = 1<<5, // Image interpolation is Nearest instead Linear
};
// Begin drawing a new frame

19
src/nanovg_gl.h
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@ -739,11 +739,24 @@ static int glnvg__renderCreateTexture(void* uptr, int type, int w, int h, int im
#endif
if (imageFlags & NVG_IMAGE_GENERATE_MIPMAPS) {
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
if (imageFlags & NVG_IMAGE_NEAREST) {
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);
} else {
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
}
} else {
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
if (imageFlags & NVG_IMAGE_NEAREST) {
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
} else {
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
}
}
if (imageFlags & NVG_IMAGE_NEAREST) {
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
} else {
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
}
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
if (imageFlags & NVG_IMAGE_REPEATX)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);