Add Support for Post Processing Effects (#3616)

* Add Post Processing Effects

* fix events and shader issues

* fix gtk upscale slider value

* fix bgra games

* don't swap swizzle if already swapped

* restore opengl texture state after effects run

* addressed review

* use single pipeline for smaa and fsr

* call finish on all pipelines

* addressed review

* attempt fix file case

* attempt fixing file case

* fix filter level tick frequency

* adjust filter slider margins

* replace fxaa shaders with original shader

* addressed review

Ryujinx.Graphics.OpenGL/Effects/FsrScalingFilter.cs

@@ -0,0 +1,177 @@
+using OpenTK.Graphics.OpenGL;
+using Ryujinx.Common;
+using Ryujinx.Graphics.GAL;
+using Ryujinx.Graphics.OpenGL.Image;
+using System;
+using static Ryujinx.Graphics.OpenGL.Effects.ShaderHelper;
+
+namespace Ryujinx.Graphics.OpenGL.Effects
+{
+    internal class FsrScalingFilter : IScalingFilter
+    {
+        private readonly OpenGLRenderer _renderer;
+        private int _inputUniform;
+        private int _outputUniform;
+        private int _sharpeningUniform;
+        private int _srcX0Uniform;
+        private int _srcX1Uniform;
+        private int _srcY0Uniform;
+        private int _scalingShaderProgram;
+        private int _sharpeningShaderProgram;
+        private float _scale = 1;
+        private int _srcY1Uniform;
+        private int _dstX0Uniform;
+        private int _dstX1Uniform;
+        private int _dstY0Uniform;
+        private int _dstY1Uniform;
+        private int _scaleXUniform;
+        private int _scaleYUniform;
+        private TextureStorage _intermediaryTexture;
+
+        public float Level
+        {
+            get => _scale;
+            set
+            {
+                _scale = MathF.Max(0.01f, value);
+            }
+        }
+
+        public FsrScalingFilter(OpenGLRenderer renderer, IPostProcessingEffect filter)
+        {
+            Initialize();
+
+            _renderer = renderer;
+        }
+
+        public void Dispose()
+        {
+            if (_scalingShaderProgram != 0)
+            {
+                GL.DeleteProgram(_scalingShaderProgram);
+                GL.DeleteProgram(_sharpeningShaderProgram);
+            }
+
+            _intermediaryTexture?.Dispose();
+        }
+
+        private void Initialize()
+        {
+            var scalingShader = EmbeddedResources.ReadAllText("Ryujinx.Graphics.OpenGL/Effects/Shaders/fsr_scaling.glsl");
+            var sharpeningShader = EmbeddedResources.ReadAllText("Ryujinx.Graphics.OpenGL/Effects/Shaders/fsr_sharpening.glsl");
+            var fsrA = EmbeddedResources.ReadAllText("Ryujinx.Graphics.OpenGL/Effects/Shaders/ffx_a.h");
+            var fsr1 = EmbeddedResources.ReadAllText("Ryujinx.Graphics.OpenGL/Effects/Shaders/ffx_fsr1.h");
+
+            scalingShader = scalingShader.Replace("#include \"ffx_a.h\"", fsrA);
+            scalingShader = scalingShader.Replace("#include \"ffx_fsr1.h\"", fsr1);
+            sharpeningShader = sharpeningShader.Replace("#include \"ffx_a.h\"", fsrA);
+            sharpeningShader = sharpeningShader.Replace("#include \"ffx_fsr1.h\"", fsr1);
+
+            _scalingShaderProgram = CompileProgram(scalingShader, ShaderType.ComputeShader);
+            _sharpeningShaderProgram = CompileProgram(sharpeningShader, ShaderType.ComputeShader);
+
+            _inputUniform = GL.GetUniformLocation(_scalingShaderProgram, "Source");
+            _outputUniform = GL.GetUniformLocation(_scalingShaderProgram, "imgOutput");
+            _sharpeningUniform = GL.GetUniformLocation(_sharpeningShaderProgram, "sharpening");
+
+            _srcX0Uniform = GL.GetUniformLocation(_scalingShaderProgram, "srcX0");
+            _srcX1Uniform = GL.GetUniformLocation(_scalingShaderProgram, "srcX1");
+            _srcY0Uniform = GL.GetUniformLocation(_scalingShaderProgram, "srcY0");
+            _srcY1Uniform = GL.GetUniformLocation(_scalingShaderProgram, "srcY1");
+            _dstX0Uniform = GL.GetUniformLocation(_scalingShaderProgram, "dstX0");
+            _dstX1Uniform = GL.GetUniformLocation(_scalingShaderProgram, "dstX1");
+            _dstY0Uniform = GL.GetUniformLocation(_scalingShaderProgram, "dstY0");
+            _dstY1Uniform = GL.GetUniformLocation(_scalingShaderProgram, "dstY1");
+            _scaleXUniform = GL.GetUniformLocation(_scalingShaderProgram, "scaleX");
+            _scaleYUniform = GL.GetUniformLocation(_scalingShaderProgram, "scaleY");
+        }
+
+        public void Run(
+            TextureView view,
+            TextureView destinationTexture,
+            int width,
+            int height,
+            Extents2D source,
+            Extents2D destination)
+        {
+            if (_intermediaryTexture == null || _intermediaryTexture.Info.Width != width || _intermediaryTexture.Info.Height != height)
+            {
+                _intermediaryTexture?.Dispose();
+                var originalInfo = view.Info;
+                var info = new TextureCreateInfo(width,
+                    height,
+                    originalInfo.Depth,
+                    originalInfo.Levels,
+                    originalInfo.Samples,
+                    originalInfo.BlockWidth,
+                    originalInfo.BlockHeight,
+                    originalInfo.BytesPerPixel,
+                    originalInfo.Format,
+                    originalInfo.DepthStencilMode,
+                    originalInfo.Target,
+                    originalInfo.SwizzleR,
+                    originalInfo.SwizzleG,
+                    originalInfo.SwizzleB,
+                    originalInfo.SwizzleA);
+
+                _intermediaryTexture = new TextureStorage(_renderer, info, view.ScaleFactor);
+                _intermediaryTexture.CreateDefaultView();
+            }
+
+            var textureView = _intermediaryTexture.CreateView(_intermediaryTexture.Info, 0, 0) as TextureView;
+
+            int previousProgram = GL.GetInteger(GetPName.CurrentProgram);
+            int previousUnit = GL.GetInteger(GetPName.ActiveTexture);
+            GL.ActiveTexture(TextureUnit.Texture0);
+            int previousTextureBinding = GL.GetInteger(GetPName.TextureBinding2D);
+
+            GL.BindImageTexture(0, textureView.Handle, 0, false, 0, TextureAccess.ReadWrite, SizedInternalFormat.Rgba8);
+
+            int threadGroupWorkRegionDim = 16;
+            int dispatchX = (width + (threadGroupWorkRegionDim - 1)) / threadGroupWorkRegionDim;
+            int dispatchY = (height + (threadGroupWorkRegionDim - 1)) / threadGroupWorkRegionDim;
+
+            // Scaling pass
+            float srcWidth = Math.Abs(source.X2 - source.X1);
+            float srcHeight = Math.Abs(source.Y2 - source.Y1);
+            float scaleX = srcWidth / view.Width;
+            float scaleY = srcHeight / view.Height;
+            GL.UseProgram(_scalingShaderProgram);
+            view.Bind(0);
+            GL.Uniform1(_inputUniform, 0);
+            GL.Uniform1(_outputUniform, 0);
+            GL.Uniform1(_srcX0Uniform, (float)source.X1);
+            GL.Uniform1(_srcX1Uniform, (float)source.X2);
+            GL.Uniform1(_srcY0Uniform, (float)source.Y1);
+            GL.Uniform1(_srcY1Uniform, (float)source.Y2);
+            GL.Uniform1(_dstX0Uniform, (float)destination.X1);
+            GL.Uniform1(_dstX1Uniform, (float)destination.X2);
+            GL.Uniform1(_dstY0Uniform, (float)destination.Y1);
+            GL.Uniform1(_dstY1Uniform, (float)destination.Y2);
+            GL.Uniform1(_scaleXUniform, scaleX);
+            GL.Uniform1(_scaleYUniform, scaleY);
+            GL.DispatchCompute(dispatchX, dispatchY, 1);
+
+            GL.MemoryBarrier(MemoryBarrierFlags.ShaderImageAccessBarrierBit);
+
+            // Sharpening Pass
+            GL.UseProgram(_sharpeningShaderProgram);
+            GL.BindImageTexture(0, destinationTexture.Handle, 0, false, 0, TextureAccess.ReadWrite, SizedInternalFormat.Rgba8);
+            textureView.Bind(0);
+            GL.Uniform1(_inputUniform, 0);
+            GL.Uniform1(_outputUniform, 0);
+            GL.Uniform1(_sharpeningUniform, 1.5f - (Level * 0.01f * 1.5f));
+            GL.DispatchCompute(dispatchX, dispatchY, 1);
+
+            GL.UseProgram(previousProgram);
+            GL.MemoryBarrier(MemoryBarrierFlags.ShaderImageAccessBarrierBit);
+
+            (_renderer.Pipeline as Pipeline).RestoreImages1And2();
+
+            GL.ActiveTexture(TextureUnit.Texture0);
+            GL.BindTexture(TextureTarget.Texture2D, previousTextureBinding);
+
+            GL.ActiveTexture((TextureUnit)previousUnit);
+        }
+    }
+}

Ryujinx.Graphics.OpenGL/Effects/FxaaPostProcessingEffect.cs

@@ -0,0 +1,81 @@
+using OpenTK.Graphics.OpenGL;
+using Ryujinx.Common;
+using Ryujinx.Graphics.OpenGL.Image;
+
+namespace Ryujinx.Graphics.OpenGL.Effects
+{
+    internal class FxaaPostProcessingEffect : IPostProcessingEffect
+    {
+        private readonly OpenGLRenderer _renderer;
+        private int _resolutionUniform;
+        private int _inputUniform;
+        private int _outputUniform;
+        private int _shaderProgram;
+        private TextureStorage _textureStorage;
+
+        public FxaaPostProcessingEffect(OpenGLRenderer renderer)
+        {
+            Initialize();
+
+            _renderer = renderer;
+        }
+
+        public void Dispose()
+        {
+            if (_shaderProgram != 0)
+            {
+                GL.DeleteProgram(_shaderProgram);
+                _textureStorage?.Dispose();
+            }
+        }
+
+        private void Initialize()
+        {
+            _shaderProgram = ShaderHelper.CompileProgram(EmbeddedResources.ReadAllText("Ryujinx.Graphics.OpenGL/Effects/Shaders/fxaa.glsl"), ShaderType.ComputeShader);
+
+            _resolutionUniform = GL.GetUniformLocation(_shaderProgram, "invResolution");
+            _inputUniform = GL.GetUniformLocation(_shaderProgram, "inputTexture");
+            _outputUniform = GL.GetUniformLocation(_shaderProgram, "imgOutput");
+        }
+
+        public TextureView Run(TextureView view, int width, int height)
+        {
+            if (_textureStorage == null || _textureStorage.Info.Width != view.Width || _textureStorage.Info.Height != view.Height)
+            {
+                _textureStorage?.Dispose();
+                _textureStorage = new TextureStorage(_renderer, view.Info, view.ScaleFactor);
+                _textureStorage.CreateDefaultView();
+            }
+
+            var textureView = _textureStorage.CreateView(view.Info, 0, 0) as TextureView;
+
+            int previousProgram = GL.GetInteger(GetPName.CurrentProgram);
+            int previousUnit = GL.GetInteger(GetPName.ActiveTexture);
+            GL.ActiveTexture(TextureUnit.Texture0);
+            int previousTextureBinding = GL.GetInteger(GetPName.TextureBinding2D);
+
+            GL.BindImageTexture(0, textureView.Handle, 0, false, 0, TextureAccess.ReadWrite, SizedInternalFormat.Rgba8);
+            GL.UseProgram(_shaderProgram);
+
+            var dispatchX = BitUtils.DivRoundUp(view.Width, IPostProcessingEffect.LocalGroupSize);
+            var dispatchY = BitUtils.DivRoundUp(view.Height, IPostProcessingEffect.LocalGroupSize);
+
+            view.Bind(0);
+            GL.Uniform1(_inputUniform, 0);
+            GL.Uniform1(_outputUniform, 0);
+            GL.Uniform2(_resolutionUniform, (float)view.Width, (float)view.Height);
+            GL.DispatchCompute(dispatchX, dispatchY, 1);
+            GL.UseProgram(previousProgram);
+            GL.MemoryBarrier(MemoryBarrierFlags.ShaderImageAccessBarrierBit);
+
+            (_renderer.Pipeline as Pipeline).RestoreImages1And2();
+
+            GL.ActiveTexture(TextureUnit.Texture0);
+            GL.BindTexture(TextureTarget.Texture2D, previousTextureBinding);
+
+            GL.ActiveTexture((TextureUnit)previousUnit);
+
+            return textureView;
+        }
+    }
+}

Ryujinx.Graphics.OpenGL/Effects/IPostProcessingEffect.cs

@@ -0,0 +1,11 @@
+using Ryujinx.Graphics.OpenGL.Image;
+using System;
+
+namespace Ryujinx.Graphics.OpenGL.Effects
+{
+    internal interface IPostProcessingEffect :  IDisposable
+    {
+        const int LocalGroupSize = 64;
+        TextureView Run(TextureView view, int width, int height);
+    }
+}

Ryujinx.Graphics.OpenGL/Effects/IScalingFilter.cs

@@ -0,0 +1,18 @@
+using Ryujinx.Graphics.GAL;
+using Ryujinx.Graphics.OpenGL.Image;
+using System;
+
+namespace Ryujinx.Graphics.OpenGL.Effects
+{
+    internal interface IScalingFilter : IDisposable
+    {
+        float Level { get; set; }
+        void Run(
+            TextureView view,
+            TextureView destinationTexture,
+            int width,
+            int height,
+            Extents2D source,
+            Extents2D destination);
+    }
+}

Ryujinx.Graphics.OpenGL/Effects/ShaderHelper.cs

@@ -0,0 +1,40 @@
+using OpenTK.Graphics.OpenGL;
+using System;
+
+namespace Ryujinx.Graphics.OpenGL.Effects
+{
+    internal static class ShaderHelper
+    {
+        public static int CompileProgram(string shaderCode, ShaderType shaderType)
+        {
+            var shader = GL.CreateShader(shaderType);
+            GL.ShaderSource(shader, shaderCode);
+            GL.CompileShader(shader);
+
+            var program = GL.CreateProgram();
+            GL.AttachShader(program, shader);
+            GL.LinkProgram(program);
+
+            GL.DetachShader(program, shader);
+            GL.DeleteShader(shader);
+
+            return program;
+        }
+
+        public static int CompileProgram(string[] shaders, ShaderType shaderType)
+        {
+            var shader = GL.CreateShader(shaderType);
+            GL.ShaderSource(shader, shaders.Length, shaders, (int[])null);
+            GL.CompileShader(shader);
+
+            var program = GL.CreateProgram();
+            GL.AttachShader(program, shader);
+            GL.LinkProgram(program);
+
+            GL.DetachShader(program, shader);
+            GL.DeleteShader(shader);
+
+            return program;
+        }
+    }
+}

Ryujinx.Graphics.OpenGL/Effects/Shaders/fsr_scaling.glsl

@@ -0,0 +1,88 @@
+#version 430 core
+precision mediump float;
+layout (local_size_x = 64) in;
+layout(rgba8, binding = 0, location=0) uniform image2D imgOutput;
+layout( location=1 ) uniform sampler2D Source;
+layout( location=2 ) uniform float srcX0;
+layout( location=3 ) uniform float srcX1;
+layout( location=4 ) uniform float srcY0;
+layout( location=5 ) uniform float srcY1;
+layout( location=6 ) uniform float dstX0;
+layout( location=7 ) uniform float dstX1;
+layout( location=8 ) uniform float dstY0;
+layout( location=9 ) uniform float dstY1;
+layout( location=10 ) uniform float scaleX;
+layout( location=11 ) uniform float scaleY;
+
+#define A_GPU 1
+#define A_GLSL 1
+#include "ffx_a.h"
+
+#define FSR_EASU_F 1
+AU4 con0, con1, con2, con3;
+float srcW, srcH, dstW, dstH;
+vec2 bLeft, tRight;
+
+AF2 translate(AF2 pos) {
+    return AF2(pos.x * scaleX, pos.y * scaleY);
+}
+
+void setBounds(vec2 bottomLeft, vec2 topRight) {
+    bLeft = bottomLeft;
+    tRight = topRight;
+}
+
+AF2 translateDest(AF2 pos) {
+    AF2 translatedPos = AF2(pos.x, pos.y);
+    translatedPos.x = dstX1 < dstX0 ? dstX1 - translatedPos.x : translatedPos.x;
+    translatedPos.y = dstY0 > dstY1 ? dstY0 + dstY1 - translatedPos.y - 1: translatedPos.y;
+    return translatedPos;
+}
+
+AF4 FsrEasuRF(AF2 p) { AF4 res = textureGather(Source, translate(p), 0); return res; }
+AF4 FsrEasuGF(AF2 p) { AF4 res = textureGather(Source, translate(p), 1); return res; }
+AF4 FsrEasuBF(AF2 p) { AF4 res = textureGather(Source, translate(p), 2); return res; }
+
+#include "ffx_fsr1.h"
+
+float insideBox(vec2 v) {
+    vec2 s = step(bLeft, v) - step(tRight, v);
+    return s.x * s.y;   
+}
+
+void CurrFilter(AU2 pos)
+{
+    if((insideBox(vec2(pos.x, pos.y))) == 0) {
+        imageStore(imgOutput, ASU2(pos.x, pos.y), AF4(0,0,0,1));
+       return;
+    }
+    AF3 c;
+    FsrEasuF(c, AU2(pos.x - bLeft.x, pos.y - bLeft.y), con0, con1, con2, con3);
+    imageStore(imgOutput, ASU2(translateDest(pos)), AF4(c, 1));
+}
+
+void main() {
+    srcW = abs(srcX1 - srcX0);
+    srcH = abs(srcY1 - srcY0);
+    dstW = abs(dstX1 - dstX0);
+    dstH = abs(dstY1 - dstY0);
+
+    AU2 gxy = ARmp8x8(gl_LocalInvocationID.x) + AU2(gl_WorkGroupID.x << 4u, gl_WorkGroupID.y << 4u);
+
+    setBounds(vec2(dstX0 < dstX1 ? dstX0 : dstX1, dstY0 < dstY1 ? dstY0 : dstY1),
+        vec2(dstX1 > dstX0 ? dstX1 : dstX0, dstY1 > dstY0 ? dstY1 : dstY0));
+
+    // Upscaling
+    FsrEasuCon(con0, con1, con2, con3,
+        srcW, srcH,  // Viewport size (top left aligned) in the input image which is to be scaled.
+        srcW, srcH,  // The size of the input image.
+        dstW, dstH); // The output resolution.
+
+    CurrFilter(gxy);
+    gxy.x += 8u;
+    CurrFilter(gxy);
+    gxy.y += 8u;
+    CurrFilter(gxy);
+    gxy.x -= 8u;
+    CurrFilter(gxy);
+}

Ryujinx.Graphics.OpenGL/Effects/Shaders/fsr_sharpening.glsl

@@ -0,0 +1,37 @@
+#version 430 core
+precision mediump float;
+layout (local_size_x = 64) in;
+layout(rgba8, binding = 0, location=0) uniform image2D imgOutput;
+layout( location=1 ) uniform sampler2D source;
+layout( location=2 ) uniform float sharpening;
+
+#define A_GPU 1
+#define A_GLSL 1
+#include "ffx_a.h"
+
+#define FSR_RCAS_F 1
+AU4 con0;
+
+AF4 FsrRcasLoadF(ASU2 p) { return AF4(texelFetch(source, p, 0)); }
+void FsrRcasInputF(inout AF1 r, inout AF1 g, inout AF1 b) {}
+
+#include "ffx_fsr1.h"
+
+void CurrFilter(AU2 pos)
+{
+    AF3 c;
+    FsrRcasF(c.r, c.g, c.b, pos, con0);
+    imageStore(imgOutput, ASU2(pos), AF4(c, 1));
+}
+
+void main() {
+    FsrRcasCon(con0, sharpening);
+    AU2 gxy = ARmp8x8(gl_LocalInvocationID.x) + AU2(gl_WorkGroupID.x << 4u, gl_WorkGroupID.y << 4u);
+    CurrFilter(gxy);
+    gxy.x += 8u;
+    CurrFilter(gxy);
+    gxy.y += 8u;
+    CurrFilter(gxy);
+    gxy.x -= 8u;
+    CurrFilter(gxy);
+}

Ryujinx.Graphics.OpenGL/Effects/Shaders/smaa_blend.glsl

@@ -0,0 +1,26 @@
+layout(rgba8, binding = 0) uniform image2D imgOutput;
+
+uniform sampler2D inputTexture;
+layout( location=0 ) uniform vec2 invResolution;
+uniform sampler2D samplerArea;
+uniform sampler2D samplerSearch;
+
+void main() {
+    ivec2 loc = ivec2(gl_GlobalInvocationID.x * 4, gl_GlobalInvocationID.y * 4);
+    for(int i = 0; i < 4; i++)
+    {
+        for(int j = 0; j < 4; j++)
+        {
+            ivec2 texelCoord = ivec2(loc.x + i, loc.y + j);
+            vec2 coord = (texelCoord + vec2(0.5)) / invResolution;
+            vec2 pixCoord;
+            vec4 offset[3];
+
+            SMAABlendingWeightCalculationVS(coord, pixCoord, offset);
+
+            vec4 oColor = SMAABlendingWeightCalculationPS(coord, pixCoord, offset, inputTexture, samplerArea, samplerSearch, ivec4(0));    
+
+            imageStore(imgOutput, texelCoord, oColor);
+        }
+    }
+}

Ryujinx.Graphics.OpenGL/Effects/Shaders/smaa_edge.glsl

@@ -0,0 +1,24 @@
+layout(rgba8, binding = 0) uniform image2D imgOutput;
+
+uniform sampler2D inputTexture;
+layout( location=0 ) uniform vec2 invResolution;
+
+void main() 
+{
+    vec2 loc = ivec2(gl_GlobalInvocationID.x * 4, gl_GlobalInvocationID.y * 4);
+    for(int i = 0; i < 4; i++)
+    {
+        for(int j = 0; j < 4; j++)
+        {
+            ivec2 texelCoord = ivec2(loc.x + i, loc.y + j);
+            vec2 coord = (texelCoord + vec2(0.5)) / invResolution;
+            vec4 offset[3];
+            SMAAEdgeDetectionVS(coord, offset);
+            vec2 oColor = SMAAColorEdgeDetectionPS(coord, offset, inputTexture);
+            if (oColor != float2(-2.0, -2.0))
+            {
+                imageStore(imgOutput, texelCoord, vec4(oColor, 0.0, 1.0));
+            }
+        }
+    }
+}

Ryujinx.Graphics.OpenGL/Effects/Shaders/smaa_neighbour.glsl

@@ -0,0 +1,26 @@
+layout(rgba8, binding = 0) uniform image2D imgOutput;
+
+uniform sampler2D inputTexture;
+layout( location=0 ) uniform vec2 invResolution;
+uniform sampler2D samplerBlend;
+
+void main() {
+    vec2 loc = ivec2(gl_GlobalInvocationID.x * 4, gl_GlobalInvocationID.y * 4);
+    for(int i = 0; i < 4; i++)
+    {
+        for(int j = 0; j < 4; j++)
+        {
+            ivec2 texelCoord = ivec2(loc.x + i, loc.y + j);
+            vec2 coord = (texelCoord + vec2(0.5)) / invResolution;
+            vec2 pixCoord;
+            vec4 offset;
+            
+            SMAANeighborhoodBlendingVS(coord, offset);
+
+            vec4 oColor = SMAANeighborhoodBlendingPS(coord, offset, inputTexture, samplerBlend);
+
+            imageStore(imgOutput,  texelCoord, oColor);
+        }
+    }
+
+}

Ryujinx.Graphics.OpenGL/Effects/SmaaPostProcessingEffect.cs

@@ -0,0 +1,261 @@
+using OpenTK.Graphics.OpenGL;
+using Ryujinx.Common;
+using Ryujinx.Graphics.GAL;
+using Ryujinx.Graphics.OpenGL.Image;
+using System;
+
+namespace Ryujinx.Graphics.OpenGL.Effects.Smaa
+{
+    internal partial class SmaaPostProcessingEffect : IPostProcessingEffect
+    {
+        public const int AreaWidth = 160;
+        public const int AreaHeight = 560;
+        public const int SearchWidth = 64;
+        public const int SearchHeight = 16;
+
+        private readonly OpenGLRenderer _renderer;
+        private TextureStorage _outputTexture;
+        private TextureStorage _searchTexture;
+        private TextureStorage _areaTexture;
+        private int[] _edgeShaderPrograms;
+        private int[] _blendShaderPrograms;
+        private int[] _neighbourShaderPrograms;
+        private TextureStorage _edgeOutputTexture;
+        private TextureStorage _blendOutputTexture;
+        private string[] _qualities;
+        private int _inputUniform;
+        private int _outputUniform;
+        private int _samplerAreaUniform;
+        private int _samplerSearchUniform;
+        private int _samplerBlendUniform;
+        private int _resolutionUniform;
+        private int _quality = 1;
+
+        public int Quality
+        {
+            get => _quality; set
+            {
+                _quality = Math.Clamp(value, 0, _qualities.Length - 1);
+            }
+        }
+        public SmaaPostProcessingEffect(OpenGLRenderer renderer, int quality)
+        {
+            _renderer = renderer;
+
+            _edgeShaderPrograms = Array.Empty<int>();
+            _blendShaderPrograms = Array.Empty<int>();
+            _neighbourShaderPrograms = Array.Empty<int>();
+
+            _qualities = new string[] { "SMAA_PRESET_LOW", "SMAA_PRESET_MEDIUM", "SMAA_PRESET_HIGH", "SMAA_PRESET_ULTRA" };
+
+            Quality = quality;
+
+            Initialize();
+        }
+
+        public void Dispose()
+        {
+            _searchTexture?.Dispose();
+            _areaTexture?.Dispose();
+            _outputTexture?.Dispose();
+            _edgeOutputTexture?.Dispose();
+            _blendOutputTexture?.Dispose();
+
+            DeleteShaders();
+        }
+
+        private void DeleteShaders()
+        {
+            for (int i = 0; i < _edgeShaderPrograms.Length; i++)
+            {
+                GL.DeleteProgram(_edgeShaderPrograms[i]);
+                GL.DeleteProgram(_blendShaderPrograms[i]);
+                GL.DeleteProgram(_neighbourShaderPrograms[i]);
+            }
+        }
+
+        private unsafe void RecreateShaders(int width, int height)
+        {
+            string baseShader = EmbeddedResources.ReadAllText("Ryujinx.Graphics.OpenGL/Effects/Shaders/smaa.hlsl");
+            var pixelSizeDefine = $"#define SMAA_RT_METRICS float4(1.0 / {width}.0, 1.0 / {height}.0, {width}, {height}) \n";
+
+            _edgeShaderPrograms = new int[_qualities.Length];
+            _blendShaderPrograms = new int[_qualities.Length];
+            _neighbourShaderPrograms = new int[_qualities.Length];
+
+            for (int i = 0; i < +_edgeShaderPrograms.Length; i++)
+            {
+                var presets = $"#version 430 core \n#define {_qualities[i]} 1 \n{pixelSizeDefine}#define SMAA_GLSL_4 1 \nlayout (local_size_x = 16, local_size_y = 16) in;\n{baseShader}";
+
+                var edgeShaderData = EmbeddedResources.ReadAllText("Ryujinx.Graphics.OpenGL/Effects/Shaders/smaa_edge.glsl");
+                var blendShaderData = EmbeddedResources.ReadAllText("Ryujinx.Graphics.OpenGL/Effects/Shaders/smaa_blend.glsl");
+                var neighbourShaderData = EmbeddedResources.ReadAllText("Ryujinx.Graphics.OpenGL/Effects/Shaders/smaa_neighbour.glsl");
+
+                var shaders = new string[] { presets, edgeShaderData };
+                var edgeProgram = ShaderHelper.CompileProgram(shaders, ShaderType.ComputeShader);
+
+                shaders[1] = blendShaderData;
+                var blendProgram = ShaderHelper.CompileProgram(shaders, ShaderType.ComputeShader);
+
+                shaders[1] = neighbourShaderData;
+                var neighbourProgram = ShaderHelper.CompileProgram(shaders, ShaderType.ComputeShader);
+
+                _edgeShaderPrograms[i] = edgeProgram;
+                _blendShaderPrograms[i] = blendProgram;
+                _neighbourShaderPrograms[i] = neighbourProgram;
+            }
+
+            _inputUniform = GL.GetUniformLocation(_edgeShaderPrograms[0], "inputTexture");
+            _outputUniform = GL.GetUniformLocation(_edgeShaderPrograms[0], "imgOutput");
+            _samplerAreaUniform = GL.GetUniformLocation(_blendShaderPrograms[0], "samplerArea");
+            _samplerSearchUniform = GL.GetUniformLocation(_blendShaderPrograms[0], "samplerSearch");
+            _samplerBlendUniform = GL.GetUniformLocation(_neighbourShaderPrograms[0], "samplerBlend");
+            _resolutionUniform = GL.GetUniformLocation(_edgeShaderPrograms[0], "invResolution");
+        }
+
+        private void Initialize()
+        {
+            var areaInfo = new TextureCreateInfo(AreaWidth,
+                AreaHeight,
+                1,
+                1,
+                1,
+                1,
+                1,
+                1,
+                Format.R8G8Unorm,
+                DepthStencilMode.Depth,
+                Target.Texture2D,
+                SwizzleComponent.Red,
+                SwizzleComponent.Green,
+                SwizzleComponent.Blue,
+                SwizzleComponent.Alpha);
+
+            var searchInfo = new TextureCreateInfo(SearchWidth,
+                SearchHeight,
+                1,
+                1,
+                1,
+                1,
+                1,
+                1,
+                Format.R8Unorm,
+                DepthStencilMode.Depth,
+                Target.Texture2D,
+                SwizzleComponent.Red,
+                SwizzleComponent.Green,
+                SwizzleComponent.Blue,
+                SwizzleComponent.Alpha);
+
+            _areaTexture = new TextureStorage(_renderer, areaInfo, 1);
+            _searchTexture = new TextureStorage(_renderer, searchInfo, 1);
+
+            var areaTexture = EmbeddedResources.Read("Ryujinx.Graphics.OpenGL/Effects/Textures/SmaaAreaTexture.bin");
+            var searchTexture = EmbeddedResources.Read("Ryujinx.Graphics.OpenGL/Effects/Textures/SmaaSearchTexture.bin");
+
+            var areaView = _areaTexture.CreateDefaultView();
+            var searchView = _searchTexture.CreateDefaultView();
+
+            areaView.SetData(areaTexture);
+            searchView.SetData(searchTexture);
+        }
+
+        public TextureView Run(TextureView view, int width, int height)
+        {
+            if (_outputTexture == null || _outputTexture.Info.Width != view.Width || _outputTexture.Info.Height != view.Height)
+            {
+                _outputTexture?.Dispose();
+                _outputTexture = new TextureStorage(_renderer, view.Info, view.ScaleFactor);
+                _outputTexture.CreateDefaultView();
+                _edgeOutputTexture = new TextureStorage(_renderer, view.Info, view.ScaleFactor);
+                _edgeOutputTexture.CreateDefaultView();
+                _blendOutputTexture = new TextureStorage(_renderer, view.Info, view.ScaleFactor);
+                _blendOutputTexture.CreateDefaultView();
+
+                DeleteShaders();
+
+                RecreateShaders(view.Width, view.Height);
+            }
+
+            var textureView = _outputTexture.CreateView(view.Info, 0, 0) as TextureView;
+            var edgeOutput = _edgeOutputTexture.DefaultView as TextureView;
+            var blendOutput = _blendOutputTexture.DefaultView as TextureView;
+            var areaTexture = _areaTexture.DefaultView as TextureView;
+            var searchTexture = _searchTexture.DefaultView as TextureView;
+
+            var previousFramebuffer = GL.GetInteger(GetPName.FramebufferBinding);
+            int previousUnit = GL.GetInteger(GetPName.ActiveTexture);
+            GL.ActiveTexture(TextureUnit.Texture0);
+            int previousTextureBinding0 = GL.GetInteger(GetPName.TextureBinding2D);
+            GL.ActiveTexture(TextureUnit.Texture1);
+            int previousTextureBinding1 = GL.GetInteger(GetPName.TextureBinding2D);
+            GL.ActiveTexture(TextureUnit.Texture2);
+            int previousTextureBinding2 = GL.GetInteger(GetPName.TextureBinding2D);
+
+            var framebuffer = new Framebuffer();
+            framebuffer.Bind();
+            framebuffer.AttachColor(0, edgeOutput);
+            GL.Clear(ClearBufferMask.ColorBufferBit);
+            GL.ClearColor(0, 0, 0, 0);
+            framebuffer.AttachColor(0, blendOutput);
+            GL.Clear(ClearBufferMask.ColorBufferBit);
+            GL.ClearColor(0, 0, 0, 0);
+
+            GL.BindFramebuffer(FramebufferTarget.Framebuffer, previousFramebuffer);
+
+            framebuffer.Dispose();
+
+            var dispatchX = BitUtils.DivRoundUp(view.Width, IPostProcessingEffect.LocalGroupSize);
+            var dispatchY = BitUtils.DivRoundUp(view.Height, IPostProcessingEffect.LocalGroupSize);
+
+            int previousProgram = GL.GetInteger(GetPName.CurrentProgram);
+            GL.BindImageTexture(0, edgeOutput.Handle, 0, false, 0, TextureAccess.ReadWrite, SizedInternalFormat.Rgba8);
+            GL.UseProgram(_edgeShaderPrograms[Quality]);
+            view.Bind(0);
+            GL.Uniform1(_inputUniform, 0);
+            GL.Uniform1(_outputUniform, 0);
+            GL.Uniform2(_resolutionUniform, (float)view.Width, (float)view.Height);
+            GL.DispatchCompute(dispatchX, dispatchY, 1);
+            GL.MemoryBarrier(MemoryBarrierFlags.ShaderImageAccessBarrierBit);
+
+            GL.BindImageTexture(0, blendOutput.Handle, 0, false, 0, TextureAccess.ReadWrite, SizedInternalFormat.Rgba8);
+            GL.UseProgram(_blendShaderPrograms[Quality]);
+            edgeOutput.Bind(0);
+            areaTexture.Bind(1);
+            searchTexture.Bind(2);
+            GL.Uniform1(_inputUniform, 0);
+            GL.Uniform1(_outputUniform, 0);
+            GL.Uniform1(_samplerAreaUniform, 1);
+            GL.Uniform1(_samplerSearchUniform, 2);
+            GL.Uniform2(_resolutionUniform, (float)view.Width, (float)view.Height);
+            GL.DispatchCompute(dispatchX, dispatchY, 1);
+            GL.MemoryBarrier(MemoryBarrierFlags.ShaderImageAccessBarrierBit);
+
+            GL.BindImageTexture(0, textureView.Handle, 0, false, 0, TextureAccess.ReadWrite, SizedInternalFormat.Rgba8);
+            GL.UseProgram(_neighbourShaderPrograms[Quality]);
+            view.Bind(0);
+            blendOutput.Bind(1);
+            GL.Uniform1(_inputUniform, 0);
+            GL.Uniform1(_outputUniform, 0);
+            GL.Uniform1(_samplerBlendUniform, 1);
+            GL.Uniform2(_resolutionUniform, (float)view.Width, (float)view.Height);
+            GL.DispatchCompute(dispatchX, dispatchY, 1);
+            GL.MemoryBarrier(MemoryBarrierFlags.ShaderImageAccessBarrierBit);
+
+            (_renderer.Pipeline as Pipeline).RestoreImages1And2();
+
+            GL.UseProgram(previousProgram);
+
+            GL.ActiveTexture(TextureUnit.Texture0);
+            GL.BindTexture(TextureTarget.Texture2D, previousTextureBinding0);
+            GL.ActiveTexture(TextureUnit.Texture1);
+            GL.BindTexture(TextureTarget.Texture2D, previousTextureBinding1);
+            GL.ActiveTexture(TextureUnit.Texture2);
+            GL.BindTexture(TextureTarget.Texture2D, previousTextureBinding2);
+
+            GL.ActiveTexture((TextureUnit)previousUnit);
+
+            return textureView;
+        }
+    }
+}