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d0128a9fa0
- enable minifier deadstripping for OpenGL shader format; bytecode is a 100% match with this change on multiple tested projects so it seems safe to enable - deprecate FOpenGLFrontend; nothing in available code appears to inherit from it anymore so the API appears unnecessary. this makes the OpenGL shader format more similar to others (which do not expose compilation functions as API) #rb Jason.Nadro #rb Laura.Hermanns #rb Yuriy.ODonnell [CL 27338803 by dan elksnitis in ue5-main branch]
137 lines
8.0 KiB
C++
137 lines
8.0 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "Containers/Array.h"
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#include "Containers/Map.h"
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#include "Containers/UnrealString.h"
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#include "CoreMinimal.h"
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#include "HAL/Platform.h"
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#include "RHIDefinitions.h"
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#include "Templates/SharedPointer.h"
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#include "hlslcc.h"
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class FArchive;
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#if PLATFORM_WINDOWS
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#include "Windows/WindowsHWrapper.h"
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#endif
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// Controls whether r.Shaders.RemoveDeadCode should be honored
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#ifndef UE_OPENGL_SHADER_COMPILER_ALLOW_DEAD_CODE_REMOVAL
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#define UE_OPENGL_SHADER_COMPILER_ALLOW_DEAD_CODE_REMOVAL 1
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#endif // UE_OPENGL_SHADER_COMPILER_ALLOW_DEAD_CODE_REMOVAL
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class FShaderCompilerFlags;
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struct FShaderCompilerInput;
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struct FShaderCompilerOutput;
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enum GLSLVersion
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{
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GLSL_150_REMOVED,
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GLSL_430_REMOVED,
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GLSL_ES2_REMOVED,
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GLSL_ES2_WEBGL_REMOVED,
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GLSL_150_ES2_DEPRECATED, // ES2 Emulation
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GLSL_150_ES2_NOUB_DEPRECATED, // ES2 Emulation with NoUBs
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GLSL_150_ES3_1, // ES3.1 Emulation
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GLSL_ES2_IOS_REMOVED,
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GLSL_310_ES_EXT_REMOVED,
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GLSL_ES3_1_ANDROID,
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GLSL_SWITCH,
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GLSL_SWITCH_FORWARD,
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GLSL_MAX
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};
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class SHADERFORMATOPENGL_API FOpenGLFrontend
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{
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public:
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UE_DEPRECATED(5.4, "FOpenGLFrontend is deprecated and derived implementations no longer possible; OpenGL shader compilation should only be triggered from within the shader format code.")
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virtual ~FOpenGLFrontend()
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{
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}
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UE_DEPRECATED(5.4, "FOpenGLFrontend is deprecated and derived implementations no longer possible; OpenGL shader compilation should only be triggered from within the shader format code.")
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void CompileShader(const struct FShaderCompilerInput& Input, struct FShaderCompilerOutput& Output, const class FString& WorkingDirectory, GLSLVersion Version);
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protected:
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// if true, the shader output map will contain true names (i.e. ColorModifier) instead of helper names for runtime binding (i.e. pb_5)
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UE_DEPRECATED(5.4, "FOpenGLFrontend is deprecated and derived implementations no longer possible; OpenGL shader compilation should only be triggered from within the shader format code.")
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virtual bool OutputTrueParameterNames()
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{
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return false;
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}
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UE_DEPRECATED(5.4, "FOpenGLFrontend is deprecated and derived implementations no longer possible; OpenGL shader compilation should only be triggered from within the shader format code.")
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virtual bool IsSM5(GLSLVersion Version)
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{
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return false;
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}
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// what is the max number of samplers the shader platform can use?
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UE_DEPRECATED(5.4, "FOpenGLFrontend is deprecated and derived implementations no longer possible; OpenGL shader compilation should only be triggered from within the shader format code.")
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virtual uint32 GetMaxSamplers(GLSLVersion Version);
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UE_DEPRECATED(5.4, "FOpenGLFrontend is deprecated and derived implementations no longer possible; OpenGL shader compilation should only be triggered from within the shader format code.")
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virtual uint32 CalculateCrossCompilerFlags(GLSLVersion Version, const bool bFullPrecisionInPS, const FShaderCompilerFlags& CompilerFlags);
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// set up compilation information like defines and HlslCompileTarget
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PRAGMA_DISABLE_DEPRECATION_WARNINGS // FShaderCompilerDefinitions will be made internal in the future, marked deprecated until then
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UE_DEPRECATED(5.4, "FOpenGLFrontend is deprecated and derived implementations no longer possible; OpenGL shader compilation should only be triggered from within the shader format code.")
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virtual void SetupPerVersionCompilationEnvironment(GLSLVersion Version, class FShaderCompilerDefinitions& AdditionalDefines, EHlslCompileTarget& HlslCompilerTarget);
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PRAGMA_ENABLE_DEPRECATION_WARNINGS
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UE_DEPRECATED(5.4, "FOpenGLFrontend is deprecated and derived implementations no longer possible; OpenGL shader compilation should only be triggered from within the shader format code.")
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virtual void ConvertOpenGLVersionFromGLSLVersion(GLSLVersion InVersion, int& OutMajorVersion, int& OutMinorVersion);
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// create the compiling backend
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UE_DEPRECATED(5.4, "FOpenGLFrontend is deprecated and derived implementations no longer possible; OpenGL shader compilation should only be triggered from within the shader format code.")
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virtual struct FGlslCodeBackend* CreateBackend(GLSLVersion Version, uint32 CCFlags, EHlslCompileTarget HlslCompilerTarget);
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// create the language spec
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UE_DEPRECATED(5.4, "FOpenGLFrontend is deprecated and derived implementations no longer possible; OpenGL shader compilation should only be triggered from within the shader format code.")
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virtual class FGlslLanguageSpec* CreateLanguageSpec(GLSLVersion Version, bool bDefaultPrecisionIsHalf);
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// Allow a subclass to perform additional work on the cross compiled source code
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UE_DEPRECATED(5.4, "FOpenGLFrontend is deprecated and derived implementations no longer possible; OpenGL shader compilation should only be triggered from within the shader format code.")
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virtual bool PostProcessShaderSource(GLSLVersion Version, EShaderFrequency Frequency, const ANSICHAR* ShaderSource,
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uint32 SourceLen, class FShaderParameterMap& ParameterMap, TMap<FString, FString>& BindingNameMap, TArray<struct FShaderCompilerError>& Errors,
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const FShaderCompilerInput& ShaderInput)
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{
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return true;
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}
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// allow subclass to write out different output, returning true if it did write everything it needed
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UE_DEPRECATED(5.4, "FOpenGLFrontend is deprecated and derived implementations no longer possible; OpenGL shader compilation should only be triggered from within the shader format code.")
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virtual bool OptionalSerializeOutputAndReturnIfSerialized(FArchive& Ar)
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{
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return false;
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}
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UE_DEPRECATED(5.4, "FOpenGLFrontend is deprecated and derived implementations no longer possible; OpenGL shader compilation should only be triggered from within the shader format code.")
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void BuildShaderOutput(FShaderCompilerOutput& ShaderOutput, const FShaderCompilerInput& ShaderInput, const ANSICHAR* InShaderSource, int32 SourceLen, GLSLVersion Version);
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UE_DEPRECATED(5.4, "FOpenGLFrontend is deprecated and derived implementations no longer possible; OpenGL shader compilation should only be triggered from within the shader format code.")
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void PrecompileShader(FShaderCompilerOutput& ShaderOutput, const FShaderCompilerInput& ShaderInput, const ANSICHAR* ShaderSource, GLSLVersion Version, EHlslShaderFrequency Frequency);
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UE_DEPRECATED(5.4, "FOpenGLFrontend is deprecated and derived implementations no longer possible; OpenGL shader compilation should only be triggered from within the shader format code.")
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bool PlatformSupportsOfflineCompilation(const GLSLVersion ShaderVersion) const;
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// fills device capabilities in 'offline', mostly hardcoded values
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UE_DEPRECATED(5.4, "FOpenGLFrontend is deprecated and derived implementations no longer possible; OpenGL shader compilation should only be triggered from within the shader format code.")
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void FillDeviceCapsOfflineCompilation(struct FDeviceCapabilities &Caps, const GLSLVersion ShaderVersion) const;
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// final source code processing, based on device capabilities, before actual (offline) compilation; it mostly mirrors the behaviour of OpenGLShaders.cpp/GLSLToDeviceCompatibleGLSL()
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UE_DEPRECATED(5.4, "FOpenGLFrontend is deprecated and derived implementations no longer possible; OpenGL shader compilation should only be triggered from within the shader format code.")
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TSharedPtr<ANSICHAR> PrepareCodeForOfflineCompilation(GLSLVersion ShaderVersion, EShaderFrequency Frequency, const ANSICHAR* InShaderSource) const;
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UE_DEPRECATED(5.4, "FOpenGLFrontend is deprecated and derived implementations no longer possible; OpenGL shader compilation should only be triggered from within the shader format code.")
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void CompileOffline(const FShaderCompilerInput& ShaderInput, FShaderCompilerOutput &Output, const GLSLVersion ShaderVersion, const ANSICHAR *InShaderSource);
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// based on ShaderVersion decides what platform specific compiler to use
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UE_DEPRECATED(5.4, "FOpenGLFrontend is deprecated and derived implementations no longer possible; OpenGL shader compilation should only be triggered from within the shader format code.")
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void PlatformCompileOffline(const FShaderCompilerInput &Input, FShaderCompilerOutput& ShaderOutput, const ANSICHAR* ShaderSource, const GLSLVersion ShaderVersion);
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};
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