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Initial tessellation shader support (#2534)

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* Initial tessellation shader support

* Nits

* Re-arrange built-in table

* This is not needed anymore

* PR feedback
This commit is contained in:
gdkchan 2021-10-18 18:38:04 -03:00 • committed by GitHub
parent 7603dbe3c8
commit d512ce122c
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GPG key ID: 4AEE18F83AFDEB23
42 changed files with 775 additions and 148 deletions
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73
Ryujinx.Graphics.Shader/CodeGen/Glsl/Declarations.cs
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@ -136,6 +136,22 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
context.AppendLine();
}
else if (context.Config.Stage == ShaderStage.TessellationControl)
{
int threadsPerInputPrimitive = context.Config.ThreadsPerInputPrimitive;
context.AppendLine($"layout (vertices = {threadsPerInputPrimitive}) out;");
context.AppendLine();
}
else if (context.Config.Stage == ShaderStage.TessellationEvaluation)
{
string patchType = context.Config.GpuAccessor.QueryTessPatchType().ToGlsl();
string spacing = context.Config.GpuAccessor.QueryTessSpacing().ToGlsl();
string windingOrder = context.Config.GpuAccessor.QueryTessCw() ? "cw" : "ccw";
context.AppendLine($"layout ({patchType}, {spacing}, {windingOrder}) in;");
context.AppendLine();
}
if (context.Config.UsedInputAttributes != 0 || context.Config.GpPassthrough)
{
@ -150,6 +166,20 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
context.AppendLine();
}
if (context.Config.UsedInputAttributesPerPatch != 0)
{
DeclareInputAttributesPerPatch(context, context.Config.UsedInputAttributesPerPatch);
context.AppendLine();
}
if (context.Config.UsedOutputAttributesPerPatch != 0)
{
DeclareUsedOutputAttributesPerPatch(context, context.Config.UsedOutputAttributesPerPatch);
context.AppendLine();
}
}
else
{
@ -424,17 +454,25 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
while (usedAttributes != 0)
{
int index = BitOperations.TrailingZeroCount(usedAttributes);
DeclareInputAttribute(context, info, index);
usedAttributes &= ~(1 << index);
}
}
}
private static void DeclareInputAttributesPerPatch(CodeGenContext context, int usedAttributes)
{
while (usedAttributes != 0)
{
int index = BitOperations.TrailingZeroCount(usedAttributes);
DeclareInputAttributePerPatch(context, index);
usedAttributes &= ~(1 << index);
}
}
private static void DeclareInputAttribute(CodeGenContext context, StructuredProgramInfo info, int attr)
{
string suffix = context.Config.Stage == ShaderStage.Geometry ? "[]" : string.Empty;
string suffix = OperandManager.IsArrayAttribute(context.Config.Stage, isOutAttr: false) ? "[]" : string.Empty;
string iq = string.Empty;
if (context.Config.Stage == ShaderStage.Fragment)
@ -465,6 +503,13 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
}
}
private static void DeclareInputAttributePerPatch(CodeGenContext context, int attr)
{
string name = $"{DefaultNames.PerPatchAttributePrefix}{attr}";
context.AppendLine($"patch in vec4 {name};");
}
private static void DeclareOutputAttributes(CodeGenContext context, StructuredProgramInfo info)
{
if (context.Config.UsedFeatures.HasFlag(FeatureFlags.OaIndexing))
@ -477,9 +522,7 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
while (usedAttributes != 0)
{
int index = BitOperations.TrailingZeroCount(usedAttributes);
DeclareOutputAttribute(context, index);
usedAttributes &= ~(1 << index);
}
}
@ -487,7 +530,8 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
private static void DeclareOutputAttribute(CodeGenContext context, int attr)
{
string name = $"{DefaultNames.OAttributePrefix}{attr}";
string suffix = OperandManager.IsArrayAttribute(context.Config.Stage, isOutAttr: true) ? "[]" : string.Empty;
string name = $"{DefaultNames.OAttributePrefix}{attr}{suffix}";
if ((context.Config.Options.Flags & TranslationFlags.Feedback) != 0)
{
@ -504,6 +548,23 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
}
}
private static void DeclareUsedOutputAttributesPerPatch(CodeGenContext context, int usedAttributes)
{
while (usedAttributes != 0)
{
int index = BitOperations.TrailingZeroCount(usedAttributes);
DeclareOutputAttributePerPatch(context, index);
usedAttributes &= ~(1 << index);
}
}
private static void DeclareOutputAttributePerPatch(CodeGenContext context, int attr)
{
string name = $"{DefaultNames.PerPatchAttributePrefix}{attr}";
context.AppendLine($"patch out vec4 {name};");
}
private static void DeclareSupportUniformBlock(CodeGenContext context, bool isFragment, int scaleElements)
{
if (!isFragment && scaleElements == 0)