| // |
| // Copyright 2020 The ANGLE Project Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| // |
| |
| #ifndef COMPILER_TRANSLATOR_TRANSLATORMETALDIRECT_PIPELINE_H_ |
| #define COMPILER_TRANSLATOR_TRANSLATORMETALDIRECT_PIPELINE_H_ |
| |
| #include "compiler/translator/Symbol.h" |
| #include "compiler/translator/TranslatorMetalDirect/ModifyStruct.h" |
| #include "compiler/translator/TranslatorMetalDirect/Name.h" |
| #include "compiler/translator/TranslatorMetalDirect/SymbolEnv.h" |
| |
| namespace sh |
| { |
| |
| // Data that is scoped as `external` and `internal` for a given pipeline. |
| template <typename T> |
| struct PipelineScoped |
| { |
| // Data that is configured to talk externally to the program. |
| // May coincide with `internal`, but may also diverge from `internal`. |
| const T *external = nullptr; |
| |
| // Data that is configured to talk internally within the program. |
| // May coincide with `external`, but may also diverge from `external`. |
| const T *internal = nullptr; |
| |
| // Returns true iff the input coincides with either `external` or `internal` data. |
| bool matches(const T &object) const { return external == &object || internal == &object; } |
| |
| // Both `external` and `internal` representations are non-null. |
| bool isTotallyFull() const { return external && internal; } |
| |
| // Both `external` and `internal` representations are null. |
| bool isTotallyEmpty() const { return !external && !internal; } |
| |
| // Both `external` and `internal` representations are the same. |
| bool isUniform() const { return external == internal; } |
| }; |
| |
| // Represents a high-level program pipeline. |
| class Pipeline |
| { |
| public: |
| enum class Type |
| { |
| VertexIn, |
| VertexOut, |
| FragmentIn, |
| FragmentOut, |
| UserUniforms, |
| AngleUniforms, |
| NonConstantGlobals, |
| InvocationVertexGlobals, |
| InvocationFragmentGlobals, |
| UniformBuffer, |
| Texture, |
| InstanceId, |
| }; |
| |
| enum class Variant |
| { |
| // For all internal pipeline uses. |
| // For external pipeline uses if pipeline does not require splitting or saturation. |
| Original, |
| |
| // Only for external pipeline uses if the pipeline was split or saturated. |
| Modified, |
| }; |
| |
| public: |
| // The type of the pipeline. |
| Type type; |
| |
| // Non-null if a global instance of the pipeline struct already exists. |
| // If non-null struct splitting should not be needed. |
| const TVariable *globalInstanceVar; |
| |
| public: |
| // Returns true iff the variable belongs to the pipeline. |
| bool uses(const TVariable &var) const; |
| |
| // Returns the name for the struct type that stores variables of this pipeline. |
| Name getStructTypeName(Variant variant) const; |
| |
| // Returns the name for the struct instance that stores variables of this pipeline. |
| Name getStructInstanceName(Variant variant) const; |
| |
| ModifyStructConfig externalStructModifyConfig() const; |
| |
| // Returns true if the pipeline always requires a non-parameter local instance declaration of |
| // the pipeline structures. |
| bool alwaysRequiresLocalVariableDeclarationInMain() const; |
| |
| // Returns true iff the pipeline is an output pipeline. The external pipeline structure should |
| // be returned from `main`. |
| bool isPipelineOut() const; |
| |
| AddressSpace externalAddressSpace() const; |
| }; |
| |
| // A collection of various pipeline structures. |
| struct PipelineStructs : angle::NonCopyable |
| { |
| PipelineScoped<TStructure> fragmentIn; |
| PipelineScoped<TStructure> fragmentOut; |
| PipelineScoped<TStructure> vertexIn; |
| PipelineScoped<TStructure> vertexOut; |
| PipelineScoped<TStructure> userUniforms; |
| PipelineScoped<TStructure> angleUniforms; |
| PipelineScoped<TStructure> nonConstantGlobals; |
| PipelineScoped<TStructure> invocationVertexGlobals; |
| PipelineScoped<TStructure> invocationFragmentGlobals; |
| PipelineScoped<TStructure> uniformBuffers; |
| PipelineScoped<TStructure> texture; |
| PipelineScoped<TStructure> instanceId; |
| |
| bool matches(const TStructure &s, bool internal, bool external) const; |
| }; |
| |
| } // namespace sh |
| |
| #endif // COMPILER_TRANSLATOR_TRANSLATORMETALDIRECT_PIPELINE_H_ |