From 7a9fc69a16d2cf29e0f5b4388869c29c4c5e8dd3 Mon Sep 17 00:00:00 2001 From: clayjohn Date: Thu, 2 Jan 2020 21:37:48 -0800 Subject: Fallback to RGBA4444 for textures with alpha set to ETC compression --- modules/etc/image_etc.cpp | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'modules') diff --git a/modules/etc/image_etc.cpp b/modules/etc/image_etc.cpp index 7cd5e2eb12..f0b95c893d 100644 --- a/modules/etc/image_etc.cpp +++ b/modules/etc/image_etc.cpp @@ -139,6 +139,13 @@ static void _compress_etc(Image *p_img, float p_lossy_quality, bool force_etc1_f return; } + if (img_format >= Image::FORMAT_RGBA8 && force_etc1_format) { + // If VRAM compression is using ETC, but image has alpha, convert to RGBA4444 + // This saves space while maintaining the alpha channel + p_img->convert(Image::FORMAT_RGBA4444); + 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); -- cgit v1.2.3