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Move texture anisotropy check to SetInfo (#2843)

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Rather than calculating this for every sampler, this PR calculates if a texture can force anisotropy when its info is set, and exposes the value via a public boolean.

This should help texture/sampler heavy games when anisotropic filtering is not Auto, like UE4 ones (or so i hear?). There is another cost where samplers are created twice when anisotropic filtering is enabled, but I'm not sure how relevant this one is.
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riperiperi 2021-12-08 21:09:36 +00:00 • committed by GitHub
parent 650cc41c02
commit bc4e70b6fa
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 28 additions and 23 deletions
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24
Ryujinx.Graphics.Gpu/Image/Sampler.cs
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@ -1,6 +1,5 @@
using Ryujinx.Graphics.GAL;
using System;
using System.Numerics;
namespace Ryujinx.Graphics.Gpu.Image
{
@ -9,8 +8,6 @@ namespace Ryujinx.Graphics.Gpu.Image
/// </summary>
class Sampler : IDisposable
{
private const int MinLevelsForAnisotropic = 5;
/// <summary>
/// Host sampler object.
/// </summary>
@ -96,26 +93,7 @@ namespace Ryujinx.Graphics.Gpu.Image
/// <returns>A host sampler</returns>
public ISampler GetHostSampler(Texture texture)
{
return _anisoSampler != null && AllowForceAnisotropy(texture) ? _anisoSampler : _hostSampler;
}
/// <summary>
/// Determine if the given texture can have anisotropic filtering forced.
/// Filtered textures that we might want to force anisotropy on should have a lot of mip levels.
/// </summary>
/// <param name="texture">The texture</param>
/// <returns>True if anisotropic filtering can be forced, false otherwise</returns>
private static bool AllowForceAnisotropy(Texture texture)
{
if (texture == null || !(texture.Target == Target.Texture2D || texture.Target == Target.Texture2DArray))
{
return false;
}
int maxSize = Math.Max(texture.Info.Width, texture.Info.Height);
int maxLevels = BitOperations.Log2((uint)maxSize) + 1;
return texture.Info.Levels >= Math.Min(MinLevelsForAnisotropic, maxLevels);
return _anisoSampler != null && texture?.CanForceAnisotropy == true ? _anisoSampler : _hostSampler;
}
/// <summary>