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authorgdk <gab.dark.100@gmail.com>2019-10-13 03:02:07 -0300
committerThog <thog@protonmail.com>2020-01-09 02:13:00 +0100
commit1876b346fea647e8284a66bb6d62c38801035cff (patch)
tree6eeff094298cda84d1613dc5ec0691e51d7b35f1 /Ryujinx.Graphics.Shader/Translation/Translator.cs
parentf617fb542a0e3d36012d77a4b5acbde7b08902f2 (diff)
Initial work
Diffstat (limited to 'Ryujinx.Graphics.Shader/Translation/Translator.cs')
-rw-r--r--Ryujinx.Graphics.Shader/Translation/Translator.cs300
1 files changed, 300 insertions, 0 deletions
diff --git a/Ryujinx.Graphics.Shader/Translation/Translator.cs b/Ryujinx.Graphics.Shader/Translation/Translator.cs
new file mode 100644
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+++ b/Ryujinx.Graphics.Shader/Translation/Translator.cs
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+using Ryujinx.Graphics.Shader.CodeGen.Glsl;
+using Ryujinx.Graphics.Shader.Decoders;
+using Ryujinx.Graphics.Shader.Instructions;
+using Ryujinx.Graphics.Shader.IntermediateRepresentation;
+using Ryujinx.Graphics.Shader.StructuredIr;
+using Ryujinx.Graphics.Shader.Translation.Optimizations;
+using System;
+using System.Collections.Generic;
+
+using static Ryujinx.Graphics.Shader.IntermediateRepresentation.OperandHelper;
+
+namespace Ryujinx.Graphics.Shader.Translation
+{
+ public static class Translator
+ {
+ private const int HeaderSize = 0x50;
+
+ public static ShaderProgram Translate(Span<byte> code, TranslationConfig translationConfig)
+ {
+ return Translate(code, Span<byte>.Empty, translationConfig);
+ }
+
+ public static ShaderProgram Translate(Span<byte> code, Span<byte> code2, TranslationConfig translationConfig)
+ {
+ bool compute = (translationConfig.Flags & TranslationFlags.Compute) != 0;
+ bool debugMode = (translationConfig.Flags & TranslationFlags.DebugMode) != 0;
+
+ Operation[] shaderOps = DecodeShader(code, compute, debugMode, out ShaderHeader header);
+
+ if (code2 != Span<byte>.Empty)
+ {
+ // Dual vertex shader.
+ Operation[] shaderOpsB = DecodeShader(code2, compute, debugMode, out header);
+
+ shaderOps = Combine(shaderOps, shaderOpsB);
+ }
+
+ ShaderStage stage;
+
+ if (compute)
+ {
+ stage = ShaderStage.Compute;
+ }
+ else
+ {
+ stage = header.Stage;
+ }
+
+ int maxOutputVertexCount = 0;
+
+ OutputTopology outputTopology = OutputTopology.LineStrip;
+
+ if (!compute)
+ {
+ maxOutputVertexCount = header.MaxOutputVertexCount;
+ outputTopology = header.OutputTopology;
+ }
+
+ ShaderConfig config = new ShaderConfig(
+ stage,
+ translationConfig.Flags,
+ translationConfig.MaxCBufferSize,
+ maxOutputVertexCount,
+ outputTopology);
+
+ BasicBlock[] irBlocks = ControlFlowGraph.MakeCfg(shaderOps);
+
+ Dominance.FindDominators(irBlocks[0], irBlocks.Length);
+
+ Dominance.FindDominanceFrontiers(irBlocks);
+
+ Ssa.Rename(irBlocks);
+
+ Optimizer.Optimize(irBlocks, stage);
+
+ StructuredProgramInfo sInfo = StructuredProgram.MakeStructuredProgram(irBlocks, config);
+
+ GlslProgram program = GlslGenerator.Generate(sInfo, config);
+
+ ShaderProgramInfo spInfo = new ShaderProgramInfo(
+ program.CBufferDescriptors,
+ program.SBufferDescriptors,
+ program.TextureDescriptors,
+ sInfo.InterpolationQualifiers,
+ sInfo.UsesInstanceId);
+
+ string glslCode = program.Code;
+
+ if (translationConfig.Version != 0)
+ {
+ glslCode = "// " + translationConfig.Version + Environment.NewLine + glslCode;
+ }
+
+ return new ShaderProgram(spInfo, stage, glslCode);
+ }
+
+ private static Operation[] DecodeShader(Span<byte> code, bool compute, bool debugMode, out ShaderHeader header)
+ {
+ Block[] cfg;
+
+ EmitterContext context;
+
+ ulong headerSize;
+
+ if (compute)
+ {
+ header = null;
+
+ cfg = Decoder.Decode(code, 0);
+
+ context = new EmitterContext(ShaderStage.Compute, header);
+
+ headerSize = 0;
+ }
+ else
+ {
+ header = new ShaderHeader(code);
+
+ cfg = Decoder.Decode(code, HeaderSize);
+
+ context = new EmitterContext(header.Stage, header);
+
+ headerSize = HeaderSize;
+ }
+
+ for (int blkIndex = 0; blkIndex < cfg.Length; blkIndex++)
+ {
+ Block block = cfg[blkIndex];
+
+ context.CurrBlock = block;
+
+ context.MarkLabel(context.GetLabel(block.Address));
+
+ for (int opIndex = 0; opIndex < block.OpCodes.Count; opIndex++)
+ {
+ OpCode op = block.OpCodes[opIndex];
+
+ if (debugMode)
+ {
+ string instName;
+
+ if (op.Emitter != null)
+ {
+ instName = op.Emitter.Method.Name;
+ }
+ else
+ {
+ instName = "???";
+ }
+
+ string dbgComment = $"0x{(op.Address - headerSize):X6}: 0x{op.RawOpCode:X16} {instName}";
+
+ context.Add(new CommentNode(dbgComment));
+ }
+
+ if (op.NeverExecute)
+ {
+ continue;
+ }
+
+ Operand predSkipLbl = null;
+
+ bool skipPredicateCheck = op.Emitter == InstEmit.Bra;
+
+ if (op is OpCodeSync opSync)
+ {
+ // If the instruction is a SYNC instruction with only one
+ // possible target address, then the instruction is basically
+ // just a simple branch, we can generate code similar to branch
+ // instructions, with the condition check on the branch itself.
+ skipPredicateCheck |= opSync.Targets.Count < 2;
+ }
+
+ if (!(op.Predicate.IsPT || skipPredicateCheck))
+ {
+ Operand label;
+
+ if (opIndex == block.OpCodes.Count - 1 && block.Next != null)
+ {
+ label = context.GetLabel(block.Next.Address);
+ }
+ else
+ {
+ label = Label();
+
+ predSkipLbl = label;
+ }
+
+ Operand pred = Register(op.Predicate);
+
+ if (op.InvertPredicate)
+ {
+ context.BranchIfTrue(label, pred);
+ }
+ else
+ {
+ context.BranchIfFalse(label, pred);
+ }
+ }
+
+ context.CurrOp = op;
+
+ if (op.Emitter != null)
+ {
+ op.Emitter(context);
+ }
+
+ if (predSkipLbl != null)
+ {
+ context.MarkLabel(predSkipLbl);
+ }
+ }
+ }
+
+ return context.GetOperations();
+ }
+
+ private static Operation[] Combine(Operation[] a, Operation[] b)
+ {
+ // Here we combine two shaders.
+ // For shader A:
+ // - All user attribute stores on shader A are turned into copies to a
+ // temporary variable. It's assumed that shader B will consume them.
+ // - All return instructions are turned into branch instructions, the
+ // branch target being the start of the shader B code.
+ // For shader B:
+ // - All user attribute loads on shader B are turned into copies from a
+ // temporary variable, as long that attribute is written by shader A.
+ List<Operation> output = new List<Operation>(a.Length + b.Length);
+
+ Operand[] temps = new Operand[AttributeConsts.UserAttributesCount * 4];
+
+ Operand lblB = Label();
+
+ for (int index = 0; index < a.Length; index++)
+ {
+ Operation operation = a[index];
+
+ if (IsUserAttribute(operation.Dest))
+ {
+ int tIndex = (operation.Dest.Value - AttributeConsts.UserAttributeBase) / 4;
+
+ Operand temp = temps[tIndex];
+
+ if (temp == null)
+ {
+ temp = Local();
+
+ temps[tIndex] = temp;
+ }
+
+ operation.Dest = temp;
+ }
+
+ if (operation.Inst == Instruction.Return)
+ {
+ output.Add(new Operation(Instruction.Branch, lblB));
+ }
+ else
+ {
+ output.Add(operation);
+ }
+ }
+
+ output.Add(new Operation(Instruction.MarkLabel, lblB));
+
+ for (int index = 0; index < b.Length; index++)
+ {
+ Operation operation = b[index];
+
+ for (int srcIndex = 0; srcIndex < operation.SourcesCount; srcIndex++)
+ {
+ Operand src = operation.GetSource(srcIndex);
+
+ if (IsUserAttribute(src))
+ {
+ Operand temp = temps[(src.Value - AttributeConsts.UserAttributeBase) / 4];
+
+ if (temp != null)
+ {
+ operation.SetSource(srcIndex, temp);
+ }
+ }
+ }
+
+ output.Add(operation);
+ }
+
+ return output.ToArray();
+ }
+
+ private static bool IsUserAttribute(Operand operand)
+ {
+ return operand != null &&
+ operand.Type == OperandType.Attribute &&
+ operand.Value >= AttributeConsts.UserAttributeBase &&
+ operand.Value < AttributeConsts.UserAttributeEnd;
+ }
+ }
+} \ No newline at end of file
generated by cgit v1.2.3-70-g09d2 (git 2.48.1) at 2025-03-13 18:12:59 +0000