2019-10-13 00:02:07 -06:00
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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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2020-03-29 06:48:39 -06:00
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private static readonly Lazy<bool> _supportsAstcCompression = new Lazy<bool>(() => HasExtension("GL_KHR_texture_compression_astc_ldr"));
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2019-10-13 00:02:07 -06:00
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2020-03-29 06:48:39 -06:00
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private static readonly Lazy<int> _maximumComputeSharedMemorySize = new Lazy<int>(() => GetLimit(All.MaxComputeSharedMemorySize));
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private static readonly Lazy<int> _storageBufferOffsetAlignment = new Lazy<int>(() => GetLimit(All.ShaderStorageBufferOffsetAlignment));
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2019-11-30 19:53:09 -07:00
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2020-03-29 06:48:39 -06:00
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public enum GpuVendor
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{
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Unknown,
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Amd,
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Intel,
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Nvidia
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}
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private static readonly Lazy<GpuVendor> _gpuVendor = new Lazy<GpuVendor>(GetGpuVendor);
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public static GpuVendor Vendor => _gpuVendor.Value;
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2019-11-30 19:53:09 -07:00
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2019-12-10 23:54:18 -07:00
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public static bool SupportsAstcCompression => _supportsAstcCompression.Value;
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2020-03-29 06:48:39 -06:00
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public static bool SupportsNonConstantTextureOffset => _gpuVendor.Value == GpuVendor.Nvidia;
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2019-12-10 23:54:18 -07:00
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2020-01-05 18:04:37 -07:00
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public static int MaximumComputeSharedMemorySize => _maximumComputeSharedMemorySize.Value;
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public static int StorageBufferOffsetAlignment => _storageBufferOffsetAlignment.Value;
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2019-10-13 00:02:07 -06:00
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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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2019-11-30 19:53:09 -07:00
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private static int GetLimit(All name)
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{
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return GL.GetInteger((GetPName)name);
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}
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2019-12-10 23:54:18 -07:00
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2020-03-29 06:48:39 -06:00
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private static GpuVendor GetGpuVendor()
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2019-12-10 23:54:18 -07:00
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{
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2020-03-29 06:48:39 -06:00
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string vendor = GL.GetString(StringName.Vendor).ToLower();
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if (vendor == "nvidia corporation")
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{
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return GpuVendor.Nvidia;
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}
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else if (vendor == "intel")
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{
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return GpuVendor.Intel;
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}
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else if (vendor == "ati technologies inc." || vendor == "advanced micro devices, inc.")
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{
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return GpuVendor.Amd;
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}
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else
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{
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return GpuVendor.Unknown;
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}
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2019-12-10 23:54:18 -07:00
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}
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2019-10-13 00:02:07 -06:00
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}
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}
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