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Add support for Vertex Program A and other small shader improvements (#192)

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* Add WIP support for Vertex Program A, add the FADD_I32 shader instruction, small fix on FFMA_I encoding, nits

* Add separate subroutines for program A/B, and copy attributes to a temp

* Move finalization code to main

* Add new line after flip uniform on the shader

* Handle possible case where VPB uses an output attribute written by VPA but not available on the vbo

* Address PR feedback
This commit is contained in:
gdkchan 2018-06-27 23:55:08 -03:00 • committed by GitHub
parent 900a84ae0a
commit e6eeb6f09f
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GPG key ID: 4AEE18F83AFDEB23
9 changed files with 303 additions and 78 deletions
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147
Ryujinx.Graphics/Gal/Shader/GlslDecompiler.cs
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@ -25,7 +25,7 @@ namespace Ryujinx.Graphics.Gal.Shader
private GlslDecl Decl;
private ShaderIrBlock[] Blocks;
private ShaderIrBlock[] Blocks, BlocksB;
private StringBuilder SB;
@ -104,24 +104,63 @@ namespace Ryujinx.Graphics.Gal.Shader
};
}
public GlslProgram Decompile(
IGalMemory Memory,
long VpAPosition,
long VpBPosition,
GalShaderType ShaderType)
{
Blocks = ShaderDecoder.Decode(Memory, VpAPosition);
BlocksB = ShaderDecoder.Decode(Memory, VpBPosition);
GlslDecl DeclVpA = new GlslDecl(Blocks, ShaderType);
GlslDecl DeclVpB = new GlslDecl(BlocksB, ShaderType);
Decl = GlslDecl.Merge(DeclVpA, DeclVpB);
return Decompile();
}
public GlslProgram Decompile(IGalMemory Memory, long Position, GalShaderType ShaderType)
{
Blocks = ShaderDecoder.Decode(Memory, Position);
Blocks = ShaderDecoder.Decode(Memory, Position);
BlocksB = null;
Decl = new GlslDecl(Blocks, ShaderType);
return Decompile();
}
private GlslProgram Decompile()
{
SB = new StringBuilder();
SB.AppendLine("#version 410 core");
PrintDeclTextures();
PrintDeclUniforms();
PrintDeclAttributes();
PrintDeclInAttributes();
PrintDeclOutAttributes();
PrintDeclGprs();
PrintDeclPreds();
PrintBlockScope(Blocks[0], null, null, "void main()", IdentationStr);
if (BlocksB != null)
{
PrintBlockScope(Blocks[0], null, null, "void " + GlslDecl.ProgramAName + "()", IdentationStr);
SB.AppendLine();
PrintBlockScope(BlocksB[0], null, null, "void " + GlslDecl.ProgramBName + "()", IdentationStr);
}
else
{
PrintBlockScope(Blocks[0], null, null, "void " + GlslDecl.ProgramName + "()", IdentationStr);
}
SB.AppendLine();
PrintMain();
string GlslCode = SB.ToString();
@ -143,11 +182,15 @@ namespace Ryujinx.Graphics.Gal.Shader
SB.AppendLine("uniform vec2 " + GlslDecl.FlipUniformName + ";");
}
SB.AppendLine();
foreach (ShaderDeclInfo DeclInfo in Decl.Uniforms.Values.OrderBy(DeclKeySelector))
{
SB.AppendLine($"layout (std140) uniform {DeclInfo.Name} {{");
SB.AppendLine($"{IdentationStr}vec4 {DeclInfo.Name}_data[{DeclInfo.Index / 4 + 1}];");
SB.AppendLine($"}};");
SB.AppendLine($"{IdentationStr}vec4 {DeclInfo.Name}_data[{GlslDecl.MaxUboSize}];");
SB.AppendLine("};");
}
if (Decl.Uniforms.Count > 0)
@ -156,6 +199,11 @@ namespace Ryujinx.Graphics.Gal.Shader
}
}
private void PrintDeclAttributes()
{
PrintDecls(Decl.Attributes);
}
private void PrintDeclInAttributes()
{
if (Decl.ShaderType == GalShaderType.Fragment)
@ -244,6 +292,59 @@ namespace Ryujinx.Graphics.Gal.Shader
return ElemTypes[DeclInfo.Size - 1] + " " + DeclInfo.Name;
}
private void PrintMain()
{
SB.AppendLine("void main() {");
foreach (KeyValuePair<int, ShaderDeclInfo> KV in Decl.InAttributes)
{
if (!Decl.Attributes.TryGetValue(KV.Key, out ShaderDeclInfo Attr))
{
continue;
}
ShaderDeclInfo DeclInfo = KV.Value;
string Swizzle = ".xyzw".Substring(0, DeclInfo.Size + 1);
SB.AppendLine(IdentationStr + Attr.Name + Swizzle + " = " + DeclInfo.Name + ";");
}
if (BlocksB != null)
{
SB.AppendLine(IdentationStr + GlslDecl.ProgramAName + "();");
SB.AppendLine(IdentationStr + GlslDecl.ProgramBName + "();");
}
else
{
SB.AppendLine(IdentationStr + GlslDecl.ProgramName + "();");
}
foreach (KeyValuePair<int, ShaderDeclInfo> KV in Decl.OutAttributes)
{
if (!Decl.Attributes.TryGetValue(KV.Key, out ShaderDeclInfo Attr))
{
continue;
}
ShaderDeclInfo DeclInfo = KV.Value;
string Swizzle = ".xyzw".Substring(0, DeclInfo.Size + 1);
SB.AppendLine(IdentationStr + DeclInfo.Name + " = " + Attr.Name + Swizzle + ";");
}
if (Decl.ShaderType == GalShaderType.Vertex)
{
SB.AppendLine(IdentationStr + "gl_Position.xy *= " + GlslDecl.FlipUniformName + ";");
SB.AppendLine(IdentationStr + GlslDecl.PositionOutAttrName + " = gl_Position;");
SB.AppendLine(IdentationStr + GlslDecl.PositionOutAttrName + ".w = 1;");
}
SB.AppendLine("}");
}
private void PrintBlockScope(
ShaderIrBlock Block,
ShaderIrBlock EndBlock,
@ -383,18 +484,6 @@ namespace Ryujinx.Graphics.Gal.Shader
continue;
}
else if (Op.Inst == ShaderIrInst.Exit)
{
//Do everything that needs to be done before
//the shader ends here.
if (Decl.ShaderType == GalShaderType.Vertex)
{
SB.AppendLine(Identation + "gl_Position.xy *= flip;");
SB.AppendLine(Identation + GlslDecl.PositionOutAttrName + " = gl_Position;");
SB.AppendLine(Identation + GlslDecl.PositionOutAttrName + ".w = 1;");
}
}
SB.AppendLine(Identation + GetSrcExpr(Op, true) + ";");
}
@ -546,11 +635,12 @@ namespace Ryujinx.Graphics.Gal.Shader
private string GetOutAbufName(ShaderIrOperAbuf Abuf)
{
return GetName(Decl.OutAttributes, Abuf);
return GetAttrTempName(Abuf);
}
private string GetName(ShaderIrOperAbuf Abuf)
{
//Handle special scalar read-only attributes here.
if (Decl.ShaderType == GalShaderType.Vertex)
{
switch (Abuf.Offs)
@ -569,20 +659,33 @@ namespace Ryujinx.Graphics.Gal.Shader
}
}
return GetName(Decl.InAttributes, Abuf);
return GetAttrTempName(Abuf);
}
private string GetName(IReadOnlyDictionary<int, ShaderDeclInfo> Dict, ShaderIrOperAbuf Abuf)
private string GetAttrTempName(ShaderIrOperAbuf Abuf)
{
int Index = Abuf.Offs >> 4;
int Elem = (Abuf.Offs >> 2) & 3;
if (!Dict.TryGetValue(Index, out ShaderDeclInfo DeclInfo))
string Swizzle = "." + GetAttrSwizzle(Elem);
if (!Decl.Attributes.TryGetValue(Index, out ShaderDeclInfo DeclInfo))
{
//Handle special vec4 attributes here
//(for example, index 7 is aways gl_Position).
if (Index == GlslDecl.GlPositionVec4Index)
{
string Name =
Decl.ShaderType != GalShaderType.Vertex &&
Decl.ShaderType != GalShaderType.Geometry ? GlslDecl.PositionOutAttrName : "gl_Position";
return Name + Swizzle;
}
throw new InvalidOperationException();
}
return DeclInfo.Size > 1 ? DeclInfo.Name + "." + GetAttrSwizzle(Elem) : DeclInfo.Name;
return DeclInfo.Name + Swizzle;
}
private string GetName(ShaderIrOperGpr Gpr)