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Add support for BC1/2/3 decompression (for 3D textures) (#2987)

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* Add support for BC1/2/3 decompression (for 3D textures)

* Optimize and clean up

* Unsafe not needed here

* Fix alpha value interpolation when a0 <= a1
This commit is contained in:
gdkchan 2022-01-22 15:23:00 -03:00 • committed by GitHub
parent 8117f6a979
commit 42c75dbb8f
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GPG key ID: 4AEE18F83AFDEB23
8 changed files with 720 additions and 143 deletions
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18
Ryujinx.Graphics.Gpu/Image/TextureCompatibility.cs
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@ -14,9 +14,6 @@ namespace Ryujinx.Graphics.Gpu.Image
private enum FormatClass
{
Unclassified,
BCn64,
BCn128,
Bc1Rgb,
Bc1Rgba,
Bc2,
Bc3,
@ -88,13 +85,21 @@ namespace Ryujinx.Graphics.Gpu.Image
return new FormatInfo(Format.R4G4B4A4Unorm, 1, 1, 2, 4);
}
if (info.Target == Target.Texture3D)
if (!caps.Supports3DTextureCompression && info.Target == Target.Texture3D)
{
// The host API does not support 3D BC4/BC5 compressed formats.
// The host API does not support 3D compressed formats.
// We assume software decompression will be done for those textures,
// and so we adjust the format here to match the decompressor output.
switch (info.FormatInfo.Format)
{
case Format.Bc1RgbaSrgb:
case Format.Bc2Srgb:
case Format.Bc3Srgb:
return new FormatInfo(Format.R8G8B8A8Srgb, 1, 1, 4, 4);
case Format.Bc1RgbaUnorm:
case Format.Bc2Unorm:
case Format.Bc3Unorm:
return new FormatInfo(Format.R8G8B8A8Unorm, 1, 1, 4, 4);
case Format.Bc4Unorm:
return new FormatInfo(Format.R8Unorm, 1, 1, 1, 1);
case Format.Bc4Snorm:
@ -749,9 +754,6 @@ namespace Ryujinx.Graphics.Gpu.Image
{
switch (format)
{
case Format.Bc1RgbSrgb:
case Format.Bc1RgbUnorm:
return FormatClass.Bc1Rgb;
case Format.Bc1RgbaSrgb:
case Format.Bc1RgbaUnorm:
return FormatClass.Bc1Rgba;