diff options
Diffstat (limited to 'modules/etc/image_etc.cpp')
| -rw-r--r-- | modules/etc/image_etc.cpp | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/modules/etc/image_etc.cpp b/modules/etc/image_etc.cpp index 7cd5e2eb12..b80138c99d 100644 --- a/modules/etc/image_etc.cpp +++ b/modules/etc/image_etc.cpp @@ -139,6 +139,18 @@ static void _compress_etc(Image *p_img, float p_lossy_quality, bool force_etc1_f return; } + if (force_etc1_format) { + // 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::DETECTED_RGBA) { + p_img->convert(Image::FORMAT_RGBA4444); + return; + } else if (detected_channels == Image::DETECTED_LA) { + p_img->convert(Image::FORMAT_LA8); + return; + } + } + uint32_t imgw = p_img->get_width(), imgh = p_img->get_height(); Image::Format etc_format = force_etc1_format ? Image::FORMAT_ETC : _get_etc2_mode(detected_channels); |