319 lines
11 KiB
C#
319 lines
11 KiB
C#
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using Ryujinx.Graphics.Shader.IntermediateRepresentation;
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using Ryujinx.Graphics.Shader.StructuredIr;
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using Ryujinx.Graphics.Shader.Translation;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
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{
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static class Declarations
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{
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// At least 16 attributes are guaranteed by the spec.
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public const int MaxAttributes = 16;
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public static void Declare(CodeGenContext context, StructuredProgramInfo info)
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{
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context.AppendLine("#version 420 core");
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context.AppendLine("#extension GL_ARB_shader_storage_buffer_object : enable");
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if (context.Config.Stage == ShaderStage.Compute)
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{
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context.AppendLine("#extension GL_ARB_compute_shader : enable");
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}
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context.AppendLine();
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context.AppendLine($"const int {DefaultNames.UndefinedName} = 0;");
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context.AppendLine();
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if (context.Config.Stage == ShaderStage.Geometry)
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{
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string inPrimitive = "points";
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if ((context.Config.Flags & TranslationFlags.Unspecialized) != 0)
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{
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inPrimitive = DefineNames.InputTopologyName;
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}
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context.AppendLine($"layout ({inPrimitive}) in;");
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string outPrimitive = "triangle_strip";
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switch (context.Config.OutputTopology)
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{
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case OutputTopology.LineStrip: outPrimitive = "line_strip"; break;
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case OutputTopology.PointList: outPrimitive = "points"; break;
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case OutputTopology.TriangleStrip: outPrimitive = "triangle_strip"; break;
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}
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int maxOutputVertices = context.Config.MaxOutputVertices;
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context.AppendLine($"layout ({outPrimitive}, max_vertices = {maxOutputVertices}) out;");
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context.AppendLine();
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}
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context.AppendLine("layout (std140) uniform Extra");
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context.EnterScope();
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context.AppendLine("vec2 flip;");
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context.AppendLine("int instance;");
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context.LeaveScope(";");
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context.AppendLine();
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context.AppendLine($"precise float {DefaultNames.LocalMemoryName}[0x100];");
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context.AppendLine();
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if (info.CBuffers.Count != 0)
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{
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DeclareUniforms(context, info);
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context.AppendLine();
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}
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if (info.SBuffers.Count != 0)
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{
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DeclareStorage(context, info);
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context.AppendLine();
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}
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if (info.Samplers.Count != 0)
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{
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DeclareSamplers(context, info);
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context.AppendLine();
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}
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if (context.Config.Stage != ShaderStage.Compute)
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{
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if (info.IAttributes.Count != 0)
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{
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DeclareInputAttributes(context, info);
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context.AppendLine();
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}
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if (info.OAttributes.Count != 0 || context.Config.Stage != ShaderStage.Fragment)
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{
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DeclareOutputAttributes(context, info);
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context.AppendLine();
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}
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}
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else
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{
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string localSizeX = "1";
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string localSizeY = "1";
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string localSizeZ = "1";
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if ((context.Config.Flags & TranslationFlags.Unspecialized) != 0)
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{
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localSizeX = DefineNames.LocalSizeX;
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localSizeY = DefineNames.LocalSizeY;
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localSizeZ = DefineNames.LocalSizeZ;
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}
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context.AppendLine(
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$"layout (" +
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$"local_size_x = {localSizeX}, " +
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$"local_size_y = {localSizeY}, " +
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$"local_size_z = {localSizeZ}) in;");
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context.AppendLine();
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}
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}
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public static void DeclareLocals(CodeGenContext context, StructuredProgramInfo info)
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{
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foreach (AstOperand decl in info.Locals)
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{
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string name = context.OperandManager.DeclareLocal(decl);
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context.AppendLine(GetVarTypeName(decl.VarType) + " " + name + ";");
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}
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}
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private static string GetVarTypeName(VariableType type)
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{
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switch (type)
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{
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case VariableType.Bool: return "bool";
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case VariableType.F32: return "precise float";
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case VariableType.S32: return "int";
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case VariableType.U32: return "uint";
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}
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throw new ArgumentException($"Invalid variable type \"{type}\".");
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}
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private static void DeclareUniforms(CodeGenContext context, StructuredProgramInfo info)
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{
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foreach (int cbufSlot in info.CBuffers.OrderBy(x => x))
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{
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string ubName = OperandManager.GetShaderStagePrefix(context.Config.Stage);
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ubName += "_" + DefaultNames.UniformNamePrefix + cbufSlot;
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context.CBufferDescriptors.Add(new BufferDescriptor(ubName, cbufSlot));
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context.AppendLine("layout (std140) uniform " + ubName);
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context.EnterScope();
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string ubSize = "[" + NumberFormatter.FormatInt(context.Config.MaxCBufferSize / 16) + "]";
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context.AppendLine("vec4 " + OperandManager.GetUbName(context.Config.Stage, cbufSlot) + ubSize + ";");
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context.LeaveScope(";");
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}
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}
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private static void DeclareStorage(CodeGenContext context, StructuredProgramInfo info)
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{
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foreach (int sbufSlot in info.SBuffers.OrderBy(x => x))
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{
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string sbName = OperandManager.GetShaderStagePrefix(context.Config.Stage);
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sbName += "_" + DefaultNames.StorageNamePrefix + sbufSlot;
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context.SBufferDescriptors.Add(new BufferDescriptor(sbName, sbufSlot));
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context.AppendLine("layout (std430) buffer " + sbName);
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context.EnterScope();
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context.AppendLine("precise float " + OperandManager.GetSbName(context.Config.Stage, sbufSlot) + "[];");
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context.LeaveScope(";");
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}
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}
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private static void DeclareSamplers(CodeGenContext context, StructuredProgramInfo info)
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{
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Dictionary<string, AstTextureOperation> samplers = new Dictionary<string, AstTextureOperation>();
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foreach (AstTextureOperation texOp in info.Samplers.OrderBy(x => x.Handle))
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{
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string samplerName = OperandManager.GetSamplerName(context.Config.Stage, texOp);
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if (!samplers.TryAdd(samplerName, texOp))
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{
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continue;
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}
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string samplerTypeName = GetSamplerTypeName(texOp.Target);
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context.AppendLine("uniform " + samplerTypeName + " " + samplerName + ";");
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}
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foreach (KeyValuePair<string, AstTextureOperation> kv in samplers)
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{
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string samplerName = kv.Key;
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AstTextureOperation texOp = kv.Value;
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TextureDescriptor desc;
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if ((texOp.Flags & TextureFlags.Bindless) != 0)
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{
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AstOperand operand = texOp.GetSource(0) as AstOperand;
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desc = new TextureDescriptor(samplerName, texOp.Target, operand.CbufSlot, operand.CbufOffset);
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}
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else
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{
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desc = new TextureDescriptor(samplerName, texOp.Target, texOp.Handle);
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}
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context.TextureDescriptors.Add(desc);
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}
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}
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private static void DeclareInputAttributes(CodeGenContext context, StructuredProgramInfo info)
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{
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string suffix = context.Config.Stage == ShaderStage.Geometry ? "[]" : string.Empty;
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foreach (int attr in info.IAttributes.OrderBy(x => x))
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{
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string iq = info.InterpolationQualifiers[attr].ToGlslQualifier();
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if (iq != string.Empty)
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{
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iq += " ";
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}
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context.AppendLine($"layout (location = {attr}) {iq}in vec4 {DefaultNames.IAttributePrefix}{attr}{suffix};");
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}
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}
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private static void DeclareOutputAttributes(CodeGenContext context, StructuredProgramInfo info)
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{
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if (context.Config.Stage == ShaderStage.Fragment)
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{
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DeclareUsedOutputAttributes(context, info);
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}
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else
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{
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DeclareAllOutputAttributes(context, info);
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}
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}
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private static void DeclareUsedOutputAttributes(CodeGenContext context, StructuredProgramInfo info)
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{
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foreach (int attr in info.OAttributes.OrderBy(x => x))
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{
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context.AppendLine($"layout (location = {attr}) out vec4 {DefaultNames.OAttributePrefix}{attr};");
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}
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}
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private static void DeclareAllOutputAttributes(CodeGenContext context, StructuredProgramInfo info)
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{
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for (int attr = 0; attr < MaxAttributes; attr++)
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{
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string iq = $"{DefineNames.OutQualifierPrefixName}{attr} ";
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context.AppendLine($"layout (location = {attr}) {iq}out vec4 {DefaultNames.OAttributePrefix}{attr};");
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}
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foreach (int attr in info.OAttributes.OrderBy(x => x).Where(x => x >= MaxAttributes))
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{
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context.AppendLine($"layout (location = {attr}) out vec4 {DefaultNames.OAttributePrefix}{attr};");
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}
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}
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private static string GetSamplerTypeName(TextureTarget type)
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{
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string typeName;
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switch (type & TextureTarget.Mask)
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{
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case TextureTarget.Texture1D: typeName = "sampler1D"; break;
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case TextureTarget.Texture2D: typeName = "sampler2D"; break;
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case TextureTarget.Texture3D: typeName = "sampler3D"; break;
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case TextureTarget.TextureCube: typeName = "samplerCube"; break;
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default: throw new ArgumentException($"Invalid sampler type \"{type}\".");
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}
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if ((type & TextureTarget.Multisample) != 0)
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{
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typeName += "MS";
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}
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if ((type & TextureTarget.Array) != 0)
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{
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typeName += "Array";
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}
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if ((type & TextureTarget.Shadow) != 0)
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{
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typeName += "Shadow";
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}
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return typeName;
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}
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}
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}
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