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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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126
Ryujinx.Graphics/Gal/Shader/GlslDecl.cs
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@ -11,31 +11,41 @@ namespace Ryujinx.Graphics.Gal.Shader
public const int VertexIdAttr = 0x2fc;
public const int GlPositionWAttr = 0x7c;
public const int MaxUboSize = 1024;
public const int GlPositionVec4Index = 7;
private const int AttrStartIndex = 8;
private const int TexStartIndex = 8;
public const string PositionOutAttrName = "position";
private const string InAttrName = "in_attr";
private const string OutAttrName = "out_attr";
private const string TextureName = "tex";
private const string UniformName = "c";
private const string GprName = "gpr";
private const string PredName = "pred";
private const string TextureName = "tex";
private const string AttrName = "attr";
private const string InAttrName = "in_" + AttrName;
private const string OutAttrName = "out_" + AttrName;
private const string GprName = "gpr";
private const string PredName = "pred";
public const string FragmentOutputName = "FragColor";
public const string FlipUniformName = "flip";
public const string ProgramName = "program";
public const string ProgramAName = ProgramName + "_a";
public const string ProgramBName = ProgramName + "_b";
private string[] StagePrefixes = new string[] { "vp", "tcp", "tep", "gp", "fp" };
private string StagePrefix;
private Dictionary<int, ShaderDeclInfo> m_Textures;
private Dictionary<int, ShaderDeclInfo> m_Uniforms;
private Dictionary<int, ShaderDeclInfo> m_Attributes;
private Dictionary<int, ShaderDeclInfo> m_InAttributes;
private Dictionary<int, ShaderDeclInfo> m_OutAttributes;
@ -43,9 +53,9 @@ namespace Ryujinx.Graphics.Gal.Shader
private Dictionary<int, ShaderDeclInfo> m_Preds;
public IReadOnlyDictionary<int, ShaderDeclInfo> Textures => m_Textures;
public IReadOnlyDictionary<int, ShaderDeclInfo> Uniforms => m_Uniforms;
public IReadOnlyDictionary<int, ShaderDeclInfo> Attributes => m_Attributes;
public IReadOnlyDictionary<int, ShaderDeclInfo> InAttributes => m_InAttributes;
public IReadOnlyDictionary<int, ShaderDeclInfo> OutAttributes => m_OutAttributes;
@ -54,31 +64,28 @@ namespace Ryujinx.Graphics.Gal.Shader
public GalShaderType ShaderType { get; private set; }
public GlslDecl(ShaderIrBlock[] Blocks, GalShaderType ShaderType)
private GlslDecl(GalShaderType ShaderType)
{
this.ShaderType = ShaderType;
StagePrefix = StagePrefixes[(int)ShaderType] + "_";
m_Uniforms = new Dictionary<int, ShaderDeclInfo>();
m_Textures = new Dictionary<int, ShaderDeclInfo>();
m_Attributes = new Dictionary<int, ShaderDeclInfo>();
m_InAttributes = new Dictionary<int, ShaderDeclInfo>();
m_OutAttributes = new Dictionary<int, ShaderDeclInfo>();
m_Gprs = new Dictionary<int, ShaderDeclInfo>();
m_Preds = new Dictionary<int, ShaderDeclInfo>();
}
public GlslDecl(ShaderIrBlock[] Blocks, GalShaderType ShaderType) : this(ShaderType)
{
StagePrefix = StagePrefixes[(int)ShaderType] + "_";
if (ShaderType == GalShaderType.Fragment)
{
m_Gprs.Add(0, new ShaderDeclInfo(FragmentOutputName, 0, 0, 4));
m_InAttributes.Add(7, new ShaderDeclInfo(PositionOutAttrName, -1, 0, 4));
}
else
{
m_OutAttributes.Add(7, new ShaderDeclInfo("gl_Position", -1, 0, 4));
}
foreach (ShaderIrBlock Block in Blocks)
@ -90,6 +97,57 @@ namespace Ryujinx.Graphics.Gal.Shader
}
}
public static GlslDecl Merge(GlslDecl VpA, GlslDecl VpB)
{
GlslDecl Combined = new GlslDecl(GalShaderType.Vertex);
Merge(Combined.m_Textures, VpA.m_Textures, VpB.m_Textures);
Merge(Combined.m_Uniforms, VpA.m_Uniforms, VpB.m_Uniforms);
Merge(Combined.m_Attributes, VpA.m_Attributes, VpB.m_Attributes);
Merge(Combined.m_OutAttributes, VpA.m_OutAttributes, VpB.m_OutAttributes);
Merge(Combined.m_Gprs, VpA.m_Gprs, VpB.m_Gprs);
Merge(Combined.m_Preds, VpA.m_Preds, VpB.m_Preds);
//Merge input attributes.
foreach (KeyValuePair<int, ShaderDeclInfo> KV in VpA.m_InAttributes)
{
Combined.m_InAttributes.TryAdd(KV.Key, KV.Value);
}
foreach (KeyValuePair<int, ShaderDeclInfo> KV in VpB.m_InAttributes)
{
//If Vertex Program A already writes to this attribute,
//then we don't need to add it as an input attribute since
//Vertex Program A will already have written to it anyway,
//and there's no guarantee that there is an input attribute
//for this slot.
if (!VpA.m_OutAttributes.ContainsKey(KV.Key))
{
Combined.m_InAttributes.TryAdd(KV.Key, KV.Value);
}
}
return Combined;
}
private static void Merge(
Dictionary<int, ShaderDeclInfo> C,
Dictionary<int, ShaderDeclInfo> A,
Dictionary<int, ShaderDeclInfo> B)
{
foreach (KeyValuePair<int, ShaderDeclInfo> KV in A)
{
C.TryAdd(KV.Key, KV.Value);
}
foreach (KeyValuePair<int, ShaderDeclInfo> KV in B)
{
C.TryAdd(KV.Key, KV.Value);
}
}
private void Traverse(ShaderIrNode Parent, ShaderIrNode Node)
{
switch (Node)
@ -133,28 +191,14 @@ namespace Ryujinx.Graphics.Gal.Shader
case ShaderIrOperCbuf Cbuf:
{
if (m_Uniforms.TryGetValue(Cbuf.Index, out ShaderDeclInfo DeclInfo))
{
DeclInfo.SetCbufOffs(Cbuf.Pos);
}
else
if (!m_Uniforms.ContainsKey(Cbuf.Index))
{
string Name = StagePrefix + UniformName + Cbuf.Index;
DeclInfo = new ShaderDeclInfo(Name, Cbuf.Pos, Cbuf.Index);
ShaderDeclInfo DeclInfo = new ShaderDeclInfo(Name, Cbuf.Pos, Cbuf.Index);
m_Uniforms.Add(Cbuf.Index, DeclInfo);
}
if (Cbuf.Offs != null)
{
//The constant buffer is being accessed as an array,
//we have no way to know the max element it may access in this case.
//Here, we just assume the array size with arbitrary values.
//TODO: Find a better solution for this.
DeclInfo.SetCbufOffs(Cbuf.Pos + 15);
}
break;
}
@ -172,6 +216,11 @@ namespace Ryujinx.Graphics.Gal.Shader
int GlslIndex = Index - AttrStartIndex;
if (GlslIndex < 0)
{
return;
}
ShaderDeclInfo DeclInfo;
if (Parent is ShaderIrAsg Asg && Asg.Dst == Node)
@ -195,6 +244,12 @@ namespace Ryujinx.Graphics.Gal.Shader
DeclInfo.Enlarge(Elem + 1);
if (!m_Attributes.ContainsKey(Index))
{
DeclInfo = new ShaderDeclInfo(AttrName + GlslIndex, GlslIndex, 0, 4);
m_Attributes.Add(Index, DeclInfo);
}
break;
}
@ -224,7 +279,10 @@ namespace Ryujinx.Graphics.Gal.Shader
private bool HasName(Dictionary<int, ShaderDeclInfo> Decls, int Index)
{
int VecIndex = Index >> 2;
//This is used to check if the dictionary already contains
//a entry for a vector at a given index position.
//Used to enable turning gprs into vectors.
int VecIndex = Index & ~3;
if (Decls.TryGetValue(VecIndex, out ShaderDeclInfo DeclInfo))
{