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Implement geometry shader passthrough (#1961)

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* Implement geometry shader passthrough

* Cache version change
This commit is contained in:
gdkchan 2021-01-29 00:38:51 -03:00 committed by GitHub
parent 9c2f851d39
commit f93089a64f
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GPG Key ID: 4AEE18F83AFDEB23
5 changed files with 47 additions and 18 deletions
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2
Ryujinx.Graphics.Gpu/Shader/ShaderCache.cs
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@ -34,7 +34,7 @@ namespace Ryujinx.Graphics.Gpu.Shader
/// <summary>
/// Version of the codegen (to be changed when codegen or guest format change).
/// </summary>
private const ulong ShaderCodeGenVersion = 1964;
private const ulong ShaderCodeGenVersion = 1961;
/// <summary>
/// Creates a new instance of the shader cache.

52
Ryujinx.Graphics.Shader/CodeGen/Glsl/Declarations.cs
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@ -26,6 +26,11 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
context.AppendLine("#extension GL_ARB_compute_shader : enable");
}
if (context.Config.GpPassthrough)
{
context.AppendLine("#extension GL_NV_geometry_shader_passthrough : enable");
}
context.AppendLine("#pragma optionNV(fastmath off)");
context.AppendLine();
@ -33,20 +38,6 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
context.AppendLine($"const int {DefaultNames.UndefinedName} = 0;");
context.AppendLine();
if (context.Config.Stage == ShaderStage.Geometry)
{
string inPrimitive = context.Config.GpuAccessor.QueryPrimitiveTopology().ToGlslString();
context.AppendLine($"layout ({inPrimitive}) in;");
string outPrimitive = context.Config.OutputTopology.ToGlslString();
int maxOutputVertices = context.Config.MaxOutputVertices;
context.AppendLine($"layout ({outPrimitive}, max_vertices = {maxOutputVertices}) out;");
context.AppendLine();
}
if (context.Config.Stage == ShaderStage.Compute)
{
int localMemorySize = BitUtils.DivRoundUp(context.Config.GpuAccessor.QueryComputeLocalMemorySize(), 4);
@ -109,6 +100,33 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
if (context.Config.Stage != ShaderStage.Compute)
{
if (context.Config.Stage == ShaderStage.Geometry)
{
string inPrimitive = context.Config.GpuAccessor.QueryPrimitiveTopology().ToGlslString();
context.AppendLine($"layout ({inPrimitive}) in;");
if (context.Config.GpPassthrough)
{
context.AppendLine($"layout (passthrough) in gl_PerVertex");
context.EnterScope();
context.AppendLine("vec4 gl_Position;");
context.AppendLine("float gl_PointSize;");
context.AppendLine("float gl_ClipDistance[];");
context.LeaveScope(";");
}
else
{
string outPrimitive = context.Config.OutputTopology.ToGlslString();
int maxOutputVertices = context.Config.MaxOutputVertices;
context.AppendLine($"layout ({outPrimitive}, max_vertices = {maxOutputVertices}) out;");
}
context.AppendLine();
}
if (info.IAttributes.Count != 0)
{
DeclareInputAttributes(context, info);
@ -432,6 +450,8 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
};
}
string pass = context.Config.GpPassthrough ? "passthrough, " : string.Empty;
string name = $"{DefaultNames.IAttributePrefix}{attr}";
if ((context.Config.Flags & TranslationFlags.Feedback) != 0)
@ -440,12 +460,12 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
{
char swzMask = "xyzw"[c];
context.AppendLine($"layout (location = {attr}, component = {c}) {iq}in float {name}_{swzMask}{suffix};");
context.AppendLine($"layout ({pass}location = {attr}, component = {c}) {iq}in float {name}_{swzMask}{suffix};");
}
}
else
{
context.AppendLine($"layout (location = {attr}) {iq}in vec4 {name}{suffix};");
context.AppendLine($"layout ({pass}location = {attr}) {iq}in vec4 {name}{suffix};");
}
}
}

3
Ryujinx.Graphics.Shader/CodeGen/Glsl/GlslGenerator.cs
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@ -69,7 +69,8 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
// compiler may eliminate them.
// (Not needed for fragment shader as it is the last stage).
if (context.Config.Stage != ShaderStage.Compute &&
context.Config.Stage != ShaderStage.Fragment)
context.Config.Stage != ShaderStage.Fragment &&
!context.Config.GpPassthrough)
{
for (int attr = 0; attr < Declarations.MaxAttributes; attr++)
{

4
Ryujinx.Graphics.Shader/Translation/ShaderConfig.cs
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@ -6,6 +6,8 @@ namespace Ryujinx.Graphics.Shader.Translation
{
public ShaderStage Stage { get; }
public bool GpPassthrough { get; }
public OutputTopology OutputTopology { get; }
public int MaxOutputVertices { get; }
@ -33,6 +35,7 @@ namespace Ryujinx.Graphics.Shader.Translation
public ShaderConfig(IGpuAccessor gpuAccessor, TranslationFlags flags, TranslationCounts counts)
{
Stage = ShaderStage.Compute;
GpPassthrough = false;
OutputTopology = OutputTopology.PointList;
MaxOutputVertices = 0;
LocalMemorySize = 0;
@ -51,6 +54,7 @@ namespace Ryujinx.Graphics.Shader.Translation
public ShaderConfig(ShaderHeader header, IGpuAccessor gpuAccessor, TranslationFlags flags, TranslationCounts counts)
{
Stage = header.Stage;
GpPassthrough = header.Stage == ShaderStage.Geometry && header.GpPassthrough;
OutputTopology = header.OutputTopology;
MaxOutputVertices = header.MaxOutputVertexCount;
LocalMemorySize = header.ShaderLocalMemoryLowSize + header.ShaderLocalMemoryHighSize;

4
Ryujinx.Graphics.Shader/Translation/ShaderHeader.cs
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@ -81,6 +81,8 @@ namespace Ryujinx.Graphics.Shader.Translation
public int SassVersion { get; }
public bool GpPassthrough { get; }
public bool DoesLoadOrStore { get; }
public bool DoesFp64 { get; }
@ -136,6 +138,8 @@ namespace Ryujinx.Graphics.Shader.Translation
SassVersion = commonWord0.Extract(17, 4);
GpPassthrough = commonWord0.Extract(24);
DoesLoadOrStore = commonWord0.Extract(26);
DoesFp64 = commonWord0.Extract(27);