diff options
Diffstat (limited to 'src/Ryujinx.Graphics.OpenGL/Effects')
5 files changed, 240 insertions, 16 deletions
diff --git a/src/Ryujinx.Graphics.OpenGL/Effects/AreaScalingFilter.cs b/src/Ryujinx.Graphics.OpenGL/Effects/AreaScalingFilter.cs new file mode 100644 index 00000000..9b19f2f2 --- /dev/null +++ b/src/Ryujinx.Graphics.OpenGL/Effects/AreaScalingFilter.cs @@ -0,0 +1,106 @@ +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 AreaScalingFilter : IScalingFilter + { + private readonly OpenGLRenderer _renderer; + private int _inputUniform; + private int _outputUniform; + private int _srcX0Uniform; + private int _srcX1Uniform; + private int _srcY0Uniform; + private int _scalingShaderProgram; + private int _srcY1Uniform; + private int _dstX0Uniform; + private int _dstX1Uniform; + private int _dstY0Uniform; + private int _dstY1Uniform; + + public float Level { get; set; } + + public AreaScalingFilter(OpenGLRenderer renderer) + { + Initialize(); + + _renderer = renderer; + } + + public void Dispose() + { + if (_scalingShaderProgram != 0) + { + GL.DeleteProgram(_scalingShaderProgram); + } + } + + private void Initialize() + { + var scalingShader = EmbeddedResources.ReadAllText("Ryujinx.Graphics.OpenGL/Effects/Shaders/area_scaling.glsl"); + + _scalingShaderProgram = CompileProgram(scalingShader, ShaderType.ComputeShader); + + _inputUniform = GL.GetUniformLocation(_scalingShaderProgram, "Source"); + _outputUniform = GL.GetUniformLocation(_scalingShaderProgram, "imgOutput"); + + _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"); + } + + public void Run( + TextureView view, + TextureView destinationTexture, + int width, + int height, + Extents2D source, + Extents2D destination) + { + 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, destinationTexture.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 + 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.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); + } + } +} diff --git a/src/Ryujinx.Graphics.OpenGL/Effects/FsrScalingFilter.cs b/src/Ryujinx.Graphics.OpenGL/Effects/FsrScalingFilter.cs index 1a130beb..0522e28e 100644 --- a/src/Ryujinx.Graphics.OpenGL/Effects/FsrScalingFilter.cs +++ b/src/Ryujinx.Graphics.OpenGL/Effects/FsrScalingFilter.cs @@ -18,7 +18,7 @@ namespace Ryujinx.Graphics.OpenGL.Effects private int _srcY0Uniform; private int _scalingShaderProgram; private int _sharpeningShaderProgram; - private float _scale = 1; + private float _sharpeningLevel = 1; private int _srcY1Uniform; private int _dstX0Uniform; private int _dstX1Uniform; @@ -30,10 +30,10 @@ namespace Ryujinx.Graphics.OpenGL.Effects public float Level { - get => _scale; + get => _sharpeningLevel; set { - _scale = MathF.Max(0.01f, value); + _sharpeningLevel = MathF.Max(0.01f, value); } } diff --git a/src/Ryujinx.Graphics.OpenGL/Effects/ShaderHelper.cs b/src/Ryujinx.Graphics.OpenGL/Effects/ShaderHelper.cs index c25fe5b2..637b2fba 100644 --- a/src/Ryujinx.Graphics.OpenGL/Effects/ShaderHelper.cs +++ b/src/Ryujinx.Graphics.OpenGL/Effects/ShaderHelper.cs @@ -1,4 +1,5 @@ using OpenTK.Graphics.OpenGL; +using Ryujinx.Common.Logging; namespace Ryujinx.Graphics.OpenGL.Effects { @@ -6,18 +7,7 @@ namespace Ryujinx.Graphics.OpenGL.Effects { 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; + return CompileProgram(new string[] { shaderCode }, shaderType); } public static int CompileProgram(string[] shaders, ShaderType shaderType) @@ -26,6 +16,15 @@ namespace Ryujinx.Graphics.OpenGL.Effects GL.ShaderSource(shader, shaders.Length, shaders, (int[])null); GL.CompileShader(shader); + GL.GetShader(shader, ShaderParameter.CompileStatus, out int isCompiled); + if (isCompiled == 0) + { + string log = GL.GetShaderInfoLog(shader); + Logger.Error?.Print(LogClass.Gpu, $"Failed to compile effect shader:\n\n{log}\n"); + GL.DeleteShader(shader); + return 0; + } + var program = GL.CreateProgram(); GL.AttachShader(program, shader); GL.LinkProgram(program); diff --git a/src/Ryujinx.Graphics.OpenGL/Effects/Shaders/area_scaling.glsl b/src/Ryujinx.Graphics.OpenGL/Effects/Shaders/area_scaling.glsl new file mode 100644 index 00000000..0fe20d3f --- /dev/null +++ b/src/Ryujinx.Graphics.OpenGL/Effects/Shaders/area_scaling.glsl @@ -0,0 +1,119 @@ +#version 430 core +precision mediump float; +layout (local_size_x = 16, local_size_y = 16) 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; + +/***** Area Sampling *****/ + +// By Sam Belliveau and Filippo Tarpini. Public Domain license. +// Effectively a more accurate sharp bilinear filter when upscaling, +// that also works as a mathematically perfect downscale filter. +// https://entropymine.com/imageworsener/pixelmixing/ +// https://github.com/obsproject/obs-studio/pull/1715 +// https://legacy.imagemagick.org/Usage/filter/ +vec4 AreaSampling(vec2 xy) +{ + // Determine the sizes of the source and target images. + vec2 source_size = vec2(abs(srcX1 - srcX0), abs(srcY1 - srcY0)); + vec2 target_size = vec2(abs(dstX1 - dstX0), abs(dstY1 - dstY0)); + vec2 inverted_target_size = vec2(1.0) / target_size; + + // Compute the top-left and bottom-right corners of the target pixel box. + vec2 t_beg = floor(xy - vec2(dstX0 < dstX1 ? dstX0 : dstX1, dstY0 < dstY1 ? dstY0 : dstY1)); + vec2 t_end = t_beg + vec2(1.0, 1.0); + + // Convert the target pixel box to source pixel box. + vec2 beg = t_beg * inverted_target_size * source_size; + vec2 end = t_end * inverted_target_size * source_size; + + // Compute the top-left and bottom-right corners of the pixel box. + ivec2 f_beg = ivec2(beg); + ivec2 f_end = ivec2(end); + + // Compute how much of the start and end pixels are covered horizontally & vertically. + float area_w = 1.0 - fract(beg.x); + float area_n = 1.0 - fract(beg.y); + float area_e = fract(end.x); + float area_s = fract(end.y); + + // Compute the areas of the corner pixels in the pixel box. + float area_nw = area_n * area_w; + float area_ne = area_n * area_e; + float area_sw = area_s * area_w; + float area_se = area_s * area_e; + + // Initialize the color accumulator. + vec4 avg_color = vec4(0.0, 0.0, 0.0, 0.0); + + // Accumulate corner pixels. + avg_color += area_nw * texelFetch(Source, ivec2(f_beg.x, f_beg.y), 0); + avg_color += area_ne * texelFetch(Source, ivec2(f_end.x, f_beg.y), 0); + avg_color += area_sw * texelFetch(Source, ivec2(f_beg.x, f_end.y), 0); + avg_color += area_se * texelFetch(Source, ivec2(f_end.x, f_end.y), 0); + + // Determine the size of the pixel box. + int x_range = int(f_end.x - f_beg.x - 0.5); + int y_range = int(f_end.y - f_beg.y - 0.5); + + // Accumulate top and bottom edge pixels. + for (int x = f_beg.x + 1; x <= f_beg.x + x_range; ++x) + { + avg_color += area_n * texelFetch(Source, ivec2(x, f_beg.y), 0); + avg_color += area_s * texelFetch(Source, ivec2(x, f_end.y), 0); + } + + // Accumulate left and right edge pixels and all the pixels in between. + for (int y = f_beg.y + 1; y <= f_beg.y + y_range; ++y) + { + avg_color += area_w * texelFetch(Source, ivec2(f_beg.x, y), 0); + avg_color += area_e * texelFetch(Source, ivec2(f_end.x, y), 0); + + for (int x = f_beg.x + 1; x <= f_beg.x + x_range; ++x) + { + avg_color += texelFetch(Source, ivec2(x, y), 0); + } + } + + // Compute the area of the pixel box that was sampled. + float area_corners = area_nw + area_ne + area_sw + area_se; + float area_edges = float(x_range) * (area_n + area_s) + float(y_range) * (area_w + area_e); + float area_center = float(x_range) * float(y_range); + + // Return the normalized average color. + return avg_color / (area_corners + area_edges + area_center); +} + +float insideBox(vec2 v, vec2 bLeft, vec2 tRight) { + vec2 s = step(bLeft, v) - step(tRight, v); + return s.x * s.y; +} + +vec2 translateDest(vec2 pos) { + vec2 translatedPos = vec2(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; +} + +void main() +{ + vec2 bLeft = vec2(dstX0 < dstX1 ? dstX0 : dstX1, dstY0 < dstY1 ? dstY0 : dstY1); + vec2 tRight = vec2(dstX1 > dstX0 ? dstX1 : dstX0, dstY1 > dstY0 ? dstY1 : dstY0); + ivec2 loc = ivec2(gl_GlobalInvocationID.x, gl_GlobalInvocationID.y); + if (insideBox(loc, bLeft, tRight) == 0) { + imageStore(imgOutput, loc, vec4(0, 0, 0, 1)); + return; + } + + vec4 outColor = AreaSampling(loc); + imageStore(imgOutput, ivec2(translateDest(loc)), vec4(outColor.rgb, 1)); +} diff --git a/src/Ryujinx.Graphics.OpenGL/Effects/Shaders/fsr_scaling.glsl b/src/Ryujinx.Graphics.OpenGL/Effects/Shaders/fsr_scaling.glsl index 8e8755db..3c7d485b 100644 --- a/src/Ryujinx.Graphics.OpenGL/Effects/Shaders/fsr_scaling.glsl +++ b/src/Ryujinx.Graphics.OpenGL/Effects/Shaders/fsr_scaling.glsl @@ -85,4 +85,4 @@ void main() { CurrFilter(gxy); gxy.x -= 8u; CurrFilter(gxy); -}
\ No newline at end of file +} |