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Add vertex shader input layout reading via shader compiler reflection to handle missing vertex elements binding when explicit layout got deprecated

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This commit is contained in:
Wojtek Figat
2025-01-07 23:26:06 +01:00
parent 7f0d852f49
commit 7aa240e5eb
20 changed files with 350 additions and 232 deletions
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19
Source/Engine/ShadersCompilation/ShaderCompiler.h
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@@ -7,6 +7,7 @@
#include "ShaderCompilationContext.h"
#include "Parser/ShaderMeta.h"
#include "Engine/Graphics/Shaders/GPUShaderProgram.h"
#include "Engine/Graphics/Shaders/GPUVertexLayout.h"
/// <summary>
/// Base class for the objects that can compile shaders source code.
@@ -14,7 +15,6 @@
class ShaderCompiler
{
public:
struct ShaderResourceBuffer
{
byte Slot;
@@ -23,11 +23,9 @@ public:
};
private:
Array<char> _funcNameDefineBuffer;
protected:
ShaderProfile _profile;
ShaderCompilationContext* _context = nullptr;
Array<ShaderMacro> _globalMacros;
@@ -35,7 +33,6 @@ protected:
Array<ShaderResourceBuffer> _constantBuffers;
public:
/// <summary>
/// Initializes a new instance of the <see cref="ShaderCompiler"/> class.
/// </summary>
@@ -51,7 +48,6 @@ public:
virtual ~ShaderCompiler() = default;
public:
/// <summary>
/// Gets shader profile supported by this compiler.
/// </summary>
@@ -85,8 +81,13 @@ public:
static void DisposeIncludedFilesCache();
protected:
// Input elements read from reflection after shader compilation. Rough approx or attributes without exact format nor bind slot (only semantics and value dimensions match).
struct AdditionalDataVS
{
GPUVertexLayout::Elements Inputs;
};
typedef bool (*WritePermutationData)(ShaderCompilationContext*, ShaderFunctionMeta&, int32, const Array<ShaderMacro>&);
typedef bool (*WritePermutationData)(ShaderCompilationContext*, ShaderFunctionMeta&, int32, const Array<ShaderMacro>&, void*);
virtual bool CompileShader(ShaderFunctionMeta& meta, WritePermutationData customDataWrite = nullptr) = 0;
@@ -99,9 +100,11 @@ protected:
static bool WriteShaderFunctionPermutation(ShaderCompilationContext* context, ShaderFunctionMeta& meta, int32 permutationIndex, const ShaderBindings& bindings, const void* header, int32 headerSize, const void* cache, int32 cacheSize);
static bool WriteShaderFunctionPermutation(ShaderCompilationContext* context, ShaderFunctionMeta& meta, int32 permutationIndex, const ShaderBindings& bindings, const void* cache, int32 cacheSize);
static bool WriteShaderFunctionEnd(ShaderCompilationContext* context, ShaderFunctionMeta& meta);
static bool WriteCustomDataVS(ShaderCompilationContext* context, ShaderFunctionMeta& meta, int32 permutationIndex, const Array<ShaderMacro>& macros);
static bool WriteCustomDataHS(ShaderCompilationContext* context, ShaderFunctionMeta& meta, int32 permutationIndex, const Array<ShaderMacro>& macros);
static bool WriteCustomDataVS(ShaderCompilationContext* context, ShaderFunctionMeta& meta, int32 permutationIndex, const Array<ShaderMacro>& macros, void* additionalData);
static bool WriteCustomDataHS(ShaderCompilationContext* context, ShaderFunctionMeta& meta, int32 permutationIndex, const Array<ShaderMacro>& macros, void* additionalData);
void GetDefineForFunction(ShaderFunctionMeta& meta, Array<ShaderMacro>& macros);
static VertexElement::Types ParseVertexElementType(StringAnsiView semantic, uint32 index = 0);
};
#endif