92 lines
3.3 KiB
C#
92 lines
3.3 KiB
C#
using OpenTK.Graphics.OpenGL;
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using System;
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namespace Ryujinx.Graphics.OpenGL
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{
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static class HwCapabilities
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{
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private static Lazy<bool> _astcCompression = new Lazy<bool>(SupportsAstcCompressionImpl);
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public static bool SupportsAstcCompression => _astcCompression.Value;
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private static bool SupportsAstcCompressionImpl()
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{
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// The NVIDIA driver has software decompression support for ASTC textures,
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// but the extension is not exposed, so we check the list of compressed
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// formats too, since the support is indicated there.
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return SupportsAnyAstcFormat() || HasExtension("GL_KHR_texture_compression_astc_ldr");
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}
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private static bool SupportsAnyAstcFormat()
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{
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int formatsCount = GL.GetInteger(GetPName.NumCompressedTextureFormats);
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int[] formats = new int[formatsCount];
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GL.GetInteger(GetPName.CompressedTextureFormats, formats);
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foreach (int format in formats)
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{
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if (IsAstcFormat(format))
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{
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return true;
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}
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}
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return false;
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}
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private static bool IsAstcFormat(int format)
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{
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switch ((All)format)
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{
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case All.CompressedRgbaAstc4X4Khr:
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case All.CompressedRgbaAstc5X4Khr:
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case All.CompressedRgbaAstc5X5Khr:
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case All.CompressedRgbaAstc6X5Khr:
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case All.CompressedRgbaAstc6X6Khr:
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case All.CompressedRgbaAstc8X5Khr:
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case All.CompressedRgbaAstc8X6Khr:
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case All.CompressedRgbaAstc8X8Khr:
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case All.CompressedRgbaAstc10X5Khr:
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case All.CompressedRgbaAstc10X6Khr:
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case All.CompressedRgbaAstc10X8Khr:
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case All.CompressedRgbaAstc10X10Khr:
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case All.CompressedRgbaAstc12X10Khr:
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case All.CompressedRgbaAstc12X12Khr:
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case All.CompressedSrgb8Alpha8Astc4X4Khr:
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case All.CompressedSrgb8Alpha8Astc5X4Khr:
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case All.CompressedSrgb8Alpha8Astc5X5Khr:
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case All.CompressedSrgb8Alpha8Astc6X5Khr:
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case All.CompressedSrgb8Alpha8Astc6X6Khr:
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case All.CompressedSrgb8Alpha8Astc8X5Khr:
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case All.CompressedSrgb8Alpha8Astc8X6Khr:
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case All.CompressedSrgb8Alpha8Astc8X8Khr:
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case All.CompressedSrgb8Alpha8Astc10X5Khr:
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case All.CompressedSrgb8Alpha8Astc10X6Khr:
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case All.CompressedSrgb8Alpha8Astc10X8Khr:
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case All.CompressedSrgb8Alpha8Astc10X10Khr:
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case All.CompressedSrgb8Alpha8Astc12X10Khr:
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case All.CompressedSrgb8Alpha8Astc12X12Khr:
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return true;
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}
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return false;
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}
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private static bool HasExtension(string name)
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{
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int numExtensions = GL.GetInteger(GetPName.NumExtensions);
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for (int extension = 0; extension < numExtensions; extension++)
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{
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if (GL.GetString(StringNameIndexed.Extensions, extension) == name)
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{
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return true;
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}
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}
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return false;
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}
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}
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} |