Added additional config to CompilePass in IShaderCompiler

Ghost.Graphics/Core/DxcShaderCompiler.cs

@@ -49,7 +49,7 @@ internal sealed partial class DxcShaderCompiler
         };
     }
 
-    private static List<string> GetCompilerArguments(ref readonly CompilerConfig config)
+    private static List<string> GetCompilerArguments(ref readonly ShaderCompilationConfig config)
     {
         var argsArray = new List<string>
         {
@@ -242,17 +242,13 @@ internal sealed unsafe partial class DxcShaderCompiler : IShaderCompiler
         }
     }
 
-    public Result<ShaderCompileResult> Compile(ref readonly CompilerConfig config, Allocator allocator)
+    public Result<ShaderCompileResult> Compile(ref readonly ShaderCompilationConfig config, Allocator allocator)
     {
         ObjectDisposedException.ThrowIf(_disposed, this);
 
         using ComPtr<IDxcIncludeHandler> includeHandler = default;
         using ComPtr<IDxcBlobEncoding> sourceBlob = default;
 
-        // Create DXC _compiler.Get() and _utils.Get()
-        var dxccID = CLSID.CLSID_DxcCompiler;
-        var dxcuID = CLSID.CLSID_DxcUtils;
-
         ThrowIfFailed(_utils.Get()->CreateDefaultIncludeHandler(includeHandler.GetAddressOf()));
 
         // Create source blob
@@ -344,7 +340,9 @@ internal sealed unsafe partial class DxcShaderCompiler : IShaderCompiler
         }
     }
 
-    public Result<GraphicsCompiledResult> CompilePass(IPassDescriptor descriptor, string? generatedCodePath)
+    // TODO: This should be shader variant specific compile instead of pass specific.
+    // TODO: Build final shader code in memory before compiling.
+    public Result<GraphicsCompiledResult> CompilePass(IPassDescriptor descriptor, ref readonly ShaderCompilationConfig additionalConfig, string? generatedCodePath)
     {
         ObjectDisposedException.ThrowIf(_disposed, this);
 
@@ -353,20 +351,23 @@ internal sealed unsafe partial class DxcShaderCompiler : IShaderCompiler
             return Result.Failure("FullPassDescriptor expected.");
         }
 
+        var fullDefines = fullDescriptor.defines ?? new List<string>();
+        fullDefines.AddRange(additionalConfig.defines);
+
         ShaderCompileResult tsResult = default;
         var tsEntry = fullDescriptor.taskShader;
         if (tsEntry.IsCreated)
         {
-            var config = new CompilerConfig
+            var config = new ShaderCompilationConfig
             {
-                defines = fullDescriptor.defines.AsSpan(),
+                defines = fullDefines.AsSpan(),
                 include = generatedCodePath,
                 shaderPath = tsEntry.shader,
                 entryPoint = tsEntry.entry,
                 stage = ShaderStage.TaskShader,
-                tier = CompilerTier.Tier0,
-                optimizeLevel = CompilerOptimizeLevel.O3,
-                options = CompilerOption.KeepReflections,
+                tier = additionalConfig.tier,
+                optimizeLevel = additionalConfig.optimizeLevel,
+                options = additionalConfig.options,
             };
 
             var result = Compile(ref config, Allocator.Persistent);
@@ -382,16 +383,16 @@ internal sealed unsafe partial class DxcShaderCompiler : IShaderCompiler
         var msEntry = fullDescriptor.meshShader;
         if (msEntry.IsCreated)
         {
-            var config = new CompilerConfig
+            var config = new ShaderCompilationConfig
             {
-                defines = fullDescriptor.defines.AsSpan(),
+                defines = fullDefines.AsSpan(),
                 include = generatedCodePath,
                 shaderPath = msEntry.shader,
                 entryPoint = msEntry.entry,
                 stage = ShaderStage.MeshShader,
-                tier = CompilerTier.Tier0,
-                optimizeLevel = CompilerOptimizeLevel.O3,
-                options = CompilerOption.KeepReflections,
+                tier = additionalConfig.tier,
+                optimizeLevel = additionalConfig.optimizeLevel,
+                options = additionalConfig.options,
             };
 
             var result = Compile(ref config, Allocator.Persistent);
@@ -411,16 +412,16 @@ internal sealed unsafe partial class DxcShaderCompiler : IShaderCompiler
         var psEntry = fullDescriptor.pixelShader;
         if (psEntry.IsCreated)
         {
-            var config = new CompilerConfig
+            var config = new ShaderCompilationConfig
             {
-                defines = fullDescriptor.defines.AsSpan(),
+                defines = fullDefines.AsSpan(),
                 include = generatedCodePath,
                 shaderPath = psEntry.shader,
                 entryPoint = psEntry.entry,
                 stage = ShaderStage.PixelShader,
-                tier = CompilerTier.Tier0,
-                optimizeLevel = CompilerOptimizeLevel.O3,
-                options = CompilerOption.KeepReflections,
+                tier = additionalConfig.tier,
+                optimizeLevel = additionalConfig.optimizeLevel,
+                options = additionalConfig.options,
             };
 
             var result = Compile(ref config, Allocator.Persistent);

Ghost.Graphics/Core/Shader.cs

@@ -36,6 +36,7 @@ public partial struct Shader
     private static int s_nextPropertyID = 0;
 
     private static readonly Dictionary<string, int> s_keywordNameToID = new Dictionary<string, int>();
+    private static readonly Dictionary<int, string> s_keywordIDToName = new Dictionary<int, string>();
     private static int s_nextkeywordID = 0;
 
     public static Identifier<ShaderPass> GetPassID(string passName)
@@ -68,9 +69,20 @@ public partial struct Shader
             id = s_nextkeywordID++;
         }
 
+        s_keywordIDToName[id] = keywordName;
         return id;
     }
 
+    public static string? GetKeywordName(int keywordID)
+    {
+        if (s_keywordIDToName.TryGetValue(keywordID, out var name))
+        {
+            return name;
+        }
+
+        return null;
+    }
+
     // TODO: Global keywords
 }