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[vk, opengl] recognize and use ETC2 (if available) textures natively (#3237)
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this makes it so VK and OGL backends map the NVIDIA's ETC2 into VK_FORMAT_ETC-whatever and GL_ETC-whatever remaps, instead of using the default fallback for AR8G8B8. in short, just make the ETC2 textures be submitted as ETC2 instead of being submit as A8R8G8B8.

Signed-off-by: lizzie lizzie@eden-emu.dev

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3237
Reviewed-by: Ghost <>
Reviewed-by: crueter <crueter@eden-emu.dev>
This commit is contained in:
lizzie 2026-05-15 22:08:09 +02:00 • committed by crueter
parent 2f0f8a979c
commit 4d49341918
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GPG key ID: 425ACD2D4830EBC6
6 changed files with 60 additions and 208 deletions
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19
src/video_core/surface.cpp
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@ -1,4 +1,4 @@
// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
// SPDX-License-Identifier: GPL-3.0-or-later
// SPDX-FileCopyrightText: 2014 Citra Emulator Project
@ -336,6 +336,20 @@ bool IsPixelFormatBCn(PixelFormat format) {
}
}
bool IsPixelFormatETC2(PixelFormat format) {
switch (format) {
case PixelFormat::ETC2_RGB_UNORM:
case PixelFormat::ETC2_RGBA_UNORM:
case PixelFormat::ETC2_RGB_PTA_UNORM:
case PixelFormat::ETC2_RGB_SRGB:
case PixelFormat::ETC2_RGBA_SRGB:
case PixelFormat::ETC2_RGB_PTA_SRGB:
return true;
default:
return false;
}
}
bool IsPixelFormatSRGB(PixelFormat format) {
switch (format) {
case PixelFormat::A8B8G8R8_SRGB:
@ -344,6 +358,9 @@ bool IsPixelFormatSRGB(PixelFormat format) {
case PixelFormat::BC2_SRGB:
case PixelFormat::BC3_SRGB:
case PixelFormat::BC7_SRGB:
case PixelFormat::ETC2_RGB_SRGB:
case PixelFormat::ETC2_RGBA_SRGB:
case PixelFormat::ETC2_RGB_PTA_SRGB:
case PixelFormat::ASTC_2D_4X4_SRGB:
case PixelFormat::ASTC_2D_8X8_SRGB:
case PixelFormat::ASTC_2D_8X5_SRGB: