524 lines
20 KiB
C#
524 lines
20 KiB
C#
using Ryujinx.Common;
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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 440 core");
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context.AppendLine("#extension GL_ARB_gpu_shader_int64 : enable");
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context.AppendLine("#extension GL_ARB_shader_ballot : enable");
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context.AppendLine("#extension GL_ARB_shader_group_vote : enable");
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context.AppendLine("#extension GL_EXT_shader_image_load_formatted : 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("#pragma optionNV(fastmath off)");
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context.AppendLine();
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context.AppendLine($"const int {DefaultNames.UndefinedName} = 0;");
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context.AppendLine();
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if (context.Config.Stage == ShaderStage.Geometry)
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{
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string inPrimitive = context.Config.GpuAccessor.QueryPrimitiveTopology().ToGlslString();
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context.AppendLine($"layout ({inPrimitive}) in;");
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string outPrimitive = context.Config.OutputTopology.ToGlslString();
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int maxOutputVertices = context.Config.MaxOutputVertices;
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context.AppendLine($"layout ({outPrimitive}, max_vertices = {maxOutputVertices}) out;");
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context.AppendLine();
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}
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if (context.Config.Stage == ShaderStage.Compute)
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{
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int localMemorySize = BitUtils.DivRoundUp(context.Config.GpuAccessor.QueryComputeLocalMemorySize(), 4);
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if (localMemorySize != 0)
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{
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string localMemorySizeStr = NumberFormatter.FormatInt(localMemorySize);
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context.AppendLine($"uint {DefaultNames.LocalMemoryName}[{localMemorySizeStr}];");
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context.AppendLine();
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}
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int sharedMemorySize = BitUtils.DivRoundUp(context.Config.GpuAccessor.QueryComputeSharedMemorySize(), 4);
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if (sharedMemorySize != 0)
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{
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string sharedMemorySizeStr = NumberFormatter.FormatInt(sharedMemorySize);
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context.AppendLine($"shared uint {DefaultNames.SharedMemoryName}[{sharedMemorySizeStr}];");
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context.AppendLine();
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}
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}
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else if (context.Config.LocalMemorySize != 0)
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{
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int localMemorySize = BitUtils.DivRoundUp(context.Config.LocalMemorySize, 4);
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string localMemorySizeStr = NumberFormatter.FormatInt(localMemorySize);
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context.AppendLine($"uint {DefaultNames.LocalMemoryName}[{localMemorySizeStr}];");
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context.AppendLine();
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}
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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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DeclareStorages(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 (info.Images.Count != 0)
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{
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DeclareImages(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 = NumberFormatter.FormatInt(context.Config.GpuAccessor.QueryComputeLocalSizeX());
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string localSizeY = NumberFormatter.FormatInt(context.Config.GpuAccessor.QueryComputeLocalSizeY());
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string localSizeZ = NumberFormatter.FormatInt(context.Config.GpuAccessor.QueryComputeLocalSizeZ());
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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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$"local_size_z = {localSizeZ}) in;");
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context.AppendLine();
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}
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if (context.Config.Stage == ShaderStage.Fragment || context.Config.Stage == ShaderStage.Compute)
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{
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if (context.Config.Stage == ShaderStage.Fragment)
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{
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context.AppendLine($"uniform bool {DefaultNames.IsBgraName}[8];");
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context.AppendLine();
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}
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if (DeclareRenderScale(context))
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{
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context.AppendLine();
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}
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}
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if ((info.HelperFunctionsMask & HelperFunctionsMask.MultiplyHighS32) != 0)
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{
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AppendHelperFunction(context, "Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/MultiplyHighS32.glsl");
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}
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if ((info.HelperFunctionsMask & HelperFunctionsMask.MultiplyHighU32) != 0)
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{
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AppendHelperFunction(context, "Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/MultiplyHighU32.glsl");
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}
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if ((info.HelperFunctionsMask & HelperFunctionsMask.Shuffle) != 0)
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{
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AppendHelperFunction(context, "Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/Shuffle.glsl");
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}
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if ((info.HelperFunctionsMask & HelperFunctionsMask.ShuffleDown) != 0)
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{
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AppendHelperFunction(context, "Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/ShuffleDown.glsl");
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}
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if ((info.HelperFunctionsMask & HelperFunctionsMask.ShuffleUp) != 0)
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{
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AppendHelperFunction(context, "Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/ShuffleUp.glsl");
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}
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if ((info.HelperFunctionsMask & HelperFunctionsMask.ShuffleXor) != 0)
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{
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AppendHelperFunction(context, "Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/ShuffleXor.glsl");
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}
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if ((info.HelperFunctionsMask & HelperFunctionsMask.SwizzleAdd) != 0)
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{
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AppendHelperFunction(context, "Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/SwizzleAdd.glsl");
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}
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}
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public static void DeclareLocals(CodeGenContext context, StructuredFunction function)
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{
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foreach (AstOperand decl in function.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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public 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.F64: return "double";
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case VariableType.None: return "void";
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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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string ubSize = "[" + NumberFormatter.FormatInt(Constants.ConstantBufferSize / 16) + "]";
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if (info.UsesCbIndexing)
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{
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int count = info.CBuffers.Max() + 1;
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int[] bindings = new int[count];
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for (int i = 0; i < count; i++)
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{
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bindings[i] = context.Config.Counts.IncrementUniformBuffersCount();
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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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context.CBufferDescriptors.Add(new BufferDescriptor(bindings[cbufSlot], cbufSlot));
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}
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string ubName = OperandManager.GetShaderStagePrefix(context.Config.Stage);
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ubName += "_" + DefaultNames.UniformNamePrefix;
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string blockName = $"{ubName}_{DefaultNames.BlockSuffix}";
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context.AppendLine($"layout (binding = {bindings[0]}, std140) uniform {blockName}");
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context.EnterScope();
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context.AppendLine("vec4 " + DefaultNames.DataName + ubSize + ";");
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context.LeaveScope($" {ubName}[{NumberFormatter.FormatInt(count)}];");
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}
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else
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{
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foreach (int cbufSlot in info.CBuffers.OrderBy(x => x))
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{
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int binding = context.Config.Counts.IncrementUniformBuffersCount();
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context.CBufferDescriptors.Add(new BufferDescriptor(binding, cbufSlot));
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string ubName = OperandManager.GetShaderStagePrefix(context.Config.Stage);
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ubName += "_" + DefaultNames.UniformNamePrefix + cbufSlot;
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context.AppendLine($"layout (binding = {binding}, std140) uniform {ubName}");
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context.EnterScope();
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context.AppendLine("vec4 " + OperandManager.GetUbName(context.Config.Stage, cbufSlot, false) + ubSize + ";");
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context.LeaveScope(";");
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}
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}
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}
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private static void DeclareStorages(CodeGenContext context, StructuredProgramInfo info)
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{
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string sbName = OperandManager.GetShaderStagePrefix(context.Config.Stage);
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sbName += "_" + DefaultNames.StorageNamePrefix;
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string blockName = $"{sbName}_{DefaultNames.BlockSuffix}";
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int count = info.SBuffers.Max() + 1;
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int[] bindings = new int[count];
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for (int i = 0; i < count; i++)
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{
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bindings[i] = context.Config.Counts.IncrementStorageBuffersCount();
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}
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foreach (int sbufSlot in info.SBuffers)
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{
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context.SBufferDescriptors.Add(new BufferDescriptor(bindings[sbufSlot], sbufSlot));
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}
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context.AppendLine($"layout (binding = {bindings[0]}, std430) buffer {blockName}");
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context.EnterScope();
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context.AppendLine("uint " + DefaultNames.DataName + "[];");
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context.LeaveScope($" {sbName}[{NumberFormatter.FormatInt(count)}];");
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}
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private static void DeclareSamplers(CodeGenContext context, StructuredProgramInfo info)
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{
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HashSet<string> samplers = new HashSet<string>();
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// Texture instructions other than TextureSample (like TextureSize)
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// may have incomplete sampler type information. In those cases,
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// we prefer instead the more accurate information from the
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// TextureSample instruction, if both are available.
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foreach (AstTextureOperation texOp in info.Samplers.OrderBy(x => x.Handle * 2 + (x.Inst == Instruction.TextureSample ? 0 : 1)))
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{
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string indexExpr = NumberFormatter.FormatInt(texOp.ArraySize);
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string samplerName = OperandManager.GetSamplerName(context.Config.Stage, texOp, indexExpr);
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if ((texOp.Flags & TextureFlags.Bindless) != 0 || !samplers.Add(samplerName))
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{
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continue;
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}
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int firstBinding = -1;
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if ((texOp.Type & SamplerType.Indexed) != 0)
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{
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for (int index = 0; index < texOp.ArraySize; index++)
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{
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int binding = context.Config.Counts.IncrementTexturesCount();
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if (firstBinding < 0)
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{
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firstBinding = binding;
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}
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var desc = new TextureDescriptor(binding, texOp.Type, texOp.Format, texOp.CbufSlot, texOp.Handle + index * 2);
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context.TextureDescriptors.Add(desc);
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}
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}
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else
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{
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firstBinding = context.Config.Counts.IncrementTexturesCount();
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var desc = new TextureDescriptor(firstBinding, texOp.Type, texOp.Format, texOp.CbufSlot, texOp.Handle);
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context.TextureDescriptors.Add(desc);
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}
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string samplerTypeName = texOp.Type.ToGlslSamplerType();
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context.AppendLine($"layout (binding = {firstBinding}) uniform {samplerTypeName} {samplerName};");
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}
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}
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private static void DeclareImages(CodeGenContext context, StructuredProgramInfo info)
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{
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HashSet<string> images = new HashSet<string>();
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foreach (AstTextureOperation texOp in info.Images.OrderBy(x => x.Handle))
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{
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string indexExpr = NumberFormatter.FormatInt(texOp.ArraySize);
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string imageName = OperandManager.GetImageName(context.Config.Stage, texOp, indexExpr);
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if ((texOp.Flags & TextureFlags.Bindless) != 0 || !images.Add(imageName))
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{
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continue;
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}
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int firstBinding = -1;
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if ((texOp.Type & SamplerType.Indexed) != 0)
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{
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for (int index = 0; index < texOp.ArraySize; index++)
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{
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int binding = context.Config.Counts.IncrementImagesCount();
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if (firstBinding < 0)
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{
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firstBinding = binding;
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}
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var desc = new TextureDescriptor(binding, texOp.Type, texOp.Format, texOp.CbufSlot, texOp.Handle + index * 2);
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context.ImageDescriptors.Add(desc);
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}
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}
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else
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{
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firstBinding = context.Config.Counts.IncrementImagesCount();
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var desc = new TextureDescriptor(firstBinding, texOp.Type, texOp.Format, texOp.CbufSlot, texOp.Handle);
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context.ImageDescriptors.Add(desc);
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}
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string layout = texOp.Format.ToGlslFormat();
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if (!string.IsNullOrEmpty(layout))
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{
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layout = ", " + layout;
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}
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string imageTypeName = texOp.Type.ToGlslImageType(texOp.Format.GetComponentType());
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context.AppendLine($"layout (binding = {firstBinding}{layout}) uniform {imageTypeName} {imageName};");
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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 = string.Empty;
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if (context.Config.Stage == ShaderStage.Fragment)
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{
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iq = context.Config.ImapTypes[attr].GetFirstUsedType() switch
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{
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PixelImap.Constant => "flat ",
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PixelImap.ScreenLinear => "noperspective ",
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_ => string.Empty
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};
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}
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string name = $"{DefaultNames.IAttributePrefix}{attr}";
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if ((context.Config.Flags & TranslationFlags.Feedback) != 0)
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{
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for (int c = 0; c < 4; c++)
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{
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char swzMask = "xyzw"[c];
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context.AppendLine($"layout (location = {attr}, component = {c}) {iq}in float {name}_{swzMask}{suffix};");
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}
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}
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else
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{
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context.AppendLine($"layout (location = {attr}) {iq}in vec4 {name}{suffix};");
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}
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}
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}
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private static void DeclareOutputAttributes(CodeGenContext context, StructuredProgramInfo info)
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{
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if (context.Config.Stage == ShaderStage.Fragment)
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{
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DeclareUsedOutputAttributes(context, info);
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}
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else
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{
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DeclareAllOutputAttributes(context, info);
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}
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}
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private static void DeclareUsedOutputAttributes(CodeGenContext context, StructuredProgramInfo info)
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{
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foreach (int attr in info.OAttributes.OrderBy(x => x))
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{
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context.AppendLine($"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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DeclareOutputAttribute(context, 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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DeclareOutputAttribute(context, attr);
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}
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}
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private static void DeclareOutputAttribute(CodeGenContext context, int attr)
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{
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string name = $"{DefaultNames.OAttributePrefix}{attr}";
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if ((context.Config.Flags & TranslationFlags.Feedback) != 0)
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{
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for (int c = 0; c < 4; c++)
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{
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char swzMask = "xyzw"[c];
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context.AppendLine($"layout (location = {attr}, component = {c}) out float {name}_{swzMask};");
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}
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}
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else
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{
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context.AppendLine($"layout (location = {attr}) out vec4 {name};");
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}
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}
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private static bool DeclareRenderScale(CodeGenContext context)
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{
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if ((context.Config.UsedFeatures & (FeatureFlags.FragCoordXY | FeatureFlags.IntegerSampling)) != 0)
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{
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string stage = OperandManager.GetShaderStagePrefix(context.Config.Stage);
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int scaleElements = context.TextureDescriptors.Count + context.ImageDescriptors.Count;
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if (context.Config.Stage == ShaderStage.Fragment)
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{
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scaleElements++; // Also includes render target scale, for gl_FragCoord.
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}
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context.AppendLine($"uniform float {stage}_renderScale[{scaleElements}];");
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if (context.Config.UsedFeatures.HasFlag(FeatureFlags.IntegerSampling))
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{
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context.AppendLine();
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AppendHelperFunction(context, $"Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/TexelFetchScale_{stage}.glsl");
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}
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return true;
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}
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return false;
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}
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private static void AppendHelperFunction(CodeGenContext context, string filename)
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{
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string code = EmbeddedResources.ReadAllText(filename);
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context.AppendLine(code.Replace("\t", CodeGenContext.Tab));
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context.AppendLine();
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}
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}
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} |