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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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9
src/video_core/surface.h
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@ -111,6 +111,12 @@ namespace VideoCore::Surface {
PIXEL_FORMAT_ELEM(ASTC_2D_6X5_UNORM, 6, 5, 128) \
PIXEL_FORMAT_ELEM(ASTC_2D_6X5_SRGB, 6, 5, 128) \
PIXEL_FORMAT_ELEM(E5B9G9R9_FLOAT, 1, 1, 32) \
PIXEL_FORMAT_ELEM(ETC2_RGB_UNORM, 4, 4, 64) \
PIXEL_FORMAT_ELEM(ETC2_RGBA_UNORM, 4, 4, 128) \
PIXEL_FORMAT_ELEM(ETC2_RGB_PTA_UNORM, 4, 4, 64) \
PIXEL_FORMAT_ELEM(ETC2_RGB_SRGB, 4, 4, 64) \
PIXEL_FORMAT_ELEM(ETC2_RGBA_SRGB, 4, 4, 128) \
PIXEL_FORMAT_ELEM(ETC2_RGB_PTA_SRGB, 4, 4, 64) \
/* Depth formats */ \
PIXEL_FORMAT_ELEM(D32_FLOAT, 1, 1, 32) \
PIXEL_FORMAT_ELEM(D16_UNORM, 1, 1, 16) \
@ -181,8 +187,6 @@ constexpr u32 BitsPerBlock(PixelFormat format) noexcept {
}
}
#undef PIXEL_FORMAT_LIST
/// Returns the sizer in bytes of the specified pixel format
constexpr u32 BytesPerBlock(PixelFormat pixel_format) {
return BitsPerBlock(pixel_format) / CHAR_BIT;
@ -198,6 +202,7 @@ SurfaceType GetFormatType(PixelFormat pixel_format);
bool HasAlpha(PixelFormat pixel_format);
bool IsPixelFormatASTC(PixelFormat format);
bool IsPixelFormatBCn(PixelFormat format);
bool IsPixelFormatETC2(PixelFormat format);
bool IsPixelFormatSRGB(PixelFormat format);
bool IsPixelFormatInteger(PixelFormat format);
bool IsPixelFormatSignedInteger(PixelFormat format);