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Merge pull request #36695 from clayjohn/ETC-mipmaps-4

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Force mipmaps off when importing RGBA4444 textures
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Rémi Verschelde 2020-03-01 08:29:42 +01:00 committed by GitHub
commit 1ab695bf37
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2 changed files with 8 additions and 0 deletions
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2
core/image.cpp
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@ -1458,6 +1458,8 @@ Error Image::generate_mipmaps(bool p_renormalize) {
ERR_FAIL_COND_V_MSG(!_can_modify(format), ERR_UNAVAILABLE, "Cannot generate mipmaps in compressed or custom image formats.");
ERR_FAIL_COND_V_MSG(format == FORMAT_RGBA4444, ERR_UNAVAILABLE, "Cannot generate mipmaps from RGBA4444 format.");
ERR_FAIL_COND_V_MSG(width == 0 || height == 0, ERR_UNCONFIGURED, "Cannot generate mipmaps with width or height equal to 0.");
int mmcount;

6
modules/etc/image_etc.cpp
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@ -106,9 +106,15 @@ static void _compress_etc(Image *p_img, float p_lossy_quality, bool force_etc1_f
// If VRAM compression is using ETC, but image has alpha, convert to RGBA4444 or LA8
// This saves space while maintaining the alpha channel
if (detected_channels == Image::USED_CHANNELS_RGBA) {
if (p_img->has_mipmaps()) {
// Image doesn't support mipmaps with RGBA4444 textures
p_img->clear_mipmaps();
}
p_img->convert(Image::FORMAT_RGBA4444);
return;
} else if (detected_channels == Image::USE_CHANNELS_LA) {
p_img->convert(Image::FORMAT_LA8);
return;
}