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Move gl_Layer from vertex to geometry if GPU does not support it on vertex (#3866)

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* Move gl_Layer from vertex to geometry if GPU does not support it on vertex

* Shader cache version bump

* PR feedback
This commit is contained in:
gdkchan 2022-11-18 23:27:54 -03:00 • committed by GitHub
parent 7373ec5792
commit 2e43d01d36
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GPG key ID: 4AEE18F83AFDEB23
13 changed files with 190 additions and 17 deletions
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97
Ryujinx.Graphics.Shader/Translation/TranslatorContext.cs
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@ -1,7 +1,12 @@
using Ryujinx.Graphics.Shader.Decoders;
using Ryujinx.Graphics.Shader.CodeGen.Glsl;
using Ryujinx.Graphics.Shader.CodeGen.Spirv;
using Ryujinx.Graphics.Shader.Decoders;
using Ryujinx.Graphics.Shader.IntermediateRepresentation;
using Ryujinx.Graphics.Shader.StructuredIr;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Numerics;
using static Ryujinx.Graphics.Shader.IntermediateRepresentation.OperandHelper;
using static Ryujinx.Graphics.Shader.Translation.Translator;
@ -18,6 +23,7 @@ namespace Ryujinx.Graphics.Shader.Translation
public ShaderStage Stage => _config.Stage;
public int Size => _config.Size;
public int Cb1DataSize => _config.Cb1DataSize;
public bool LayerOutputWritten => _config.LayerOutputWritten;
public IGpuAccessor GpuAccessor => _config.GpuAccessor;
@ -149,5 +155,94 @@ namespace Ryujinx.Graphics.Shader.Translation
return Translator.Translate(code, _config);
}
public ShaderProgram GenerateGeometryPassthrough()
{
int outputAttributesMask = _config.UsedOutputAttributes;
int layerOutputAttr = _config.LayerOutputAttribute;
OutputTopology outputTopology;
int maxOutputVertices;
switch (GpuAccessor.QueryPrimitiveTopology())
{
case InputTopology.Points:
outputTopology = OutputTopology.PointList;
maxOutputVertices = 1;
break;
case InputTopology.Lines:
case InputTopology.LinesAdjacency:
outputTopology = OutputTopology.LineStrip;
maxOutputVertices = 2;
break;
default:
outputTopology = OutputTopology.TriangleStrip;
maxOutputVertices = 3;
break;
}
ShaderConfig config = new ShaderConfig(ShaderStage.Geometry, outputTopology, maxOutputVertices, GpuAccessor, _config.Options);
EmitterContext context = new EmitterContext(default, config, false);
for (int v = 0; v < maxOutputVertices; v++)
{
int outAttrsMask = outputAttributesMask;
while (outAttrsMask != 0)
{
int attrIndex = BitOperations.TrailingZeroCount(outAttrsMask);
outAttrsMask &= ~(1 << attrIndex);
for (int c = 0; c < 4; c++)
{
int attr = AttributeConsts.UserAttributeBase + attrIndex * 16 + c * 4;
Operand value = context.LoadAttribute(Const(attr), Const(0), Const(v));
if (attr == layerOutputAttr)
{
context.Copy(Attribute(AttributeConsts.Layer), value);
}
else
{
context.Copy(Attribute(attr), value);
config.SetOutputUserAttribute(attrIndex);
}
config.SetInputUserAttribute(attrIndex, c);
}
}
for (int c = 0; c < 4; c++)
{
int attr = AttributeConsts.PositionX + c * 4;
Operand value = context.LoadAttribute(Const(attr), Const(0), Const(v));
context.Copy(Attribute(attr), value);
}
context.EmitVertex();
}
context.EndPrimitive();
var operations = context.GetOperations();
var cfg = ControlFlowGraph.Create(operations);
var function = new Function(cfg.Blocks, "main", false, 0, 0);
var sInfo = StructuredProgram.MakeStructuredProgram(new[] { function }, config);
var info = config.CreateProgramInfo();
return config.Options.TargetLanguage switch
{
TargetLanguage.Glsl => new ShaderProgram(info, TargetLanguage.Glsl, GlslGenerator.Generate(sInfo, config)),
TargetLanguage.Spirv => new ShaderProgram(info, TargetLanguage.Spirv, SpirvGenerator.Generate(sInfo, config)),
_ => throw new NotImplementedException(config.Options.TargetLanguage.ToString())
};
}
}
}