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daniel@transgaming.com4f39fd92010-03-08 20:26:45 +00001//
2// Copyright (c) 2002-2010 The ANGLE Project Authors. All rights reserved.
3// Use of this source code is governed by a BSD-style license that can be
4// found in the LICENSE file.
5//
6
7#ifndef _SHHANDLE_INCLUDED_
8#define _SHHANDLE_INCLUDED_
9
10//
11// Machine independent part of the compiler private objects
12// sent as ShHandle to the driver.
13//
14// This should not be included by driver code.
15//
16
alokp@chromium.orgea0e1af2010-03-22 19:33:14 +000017#include "GLSLANG/ShaderLang.h"
daniel@transgaming.com4f39fd92010-03-08 20:26:45 +000018
alokp@chromium.orgad771eb2010-09-07 17:36:23 +000019#include "compiler/ExtensionBehavior.h"
daniel@transgaming.combbf56f72010-04-20 18:52:13 +000020#include "compiler/InfoSink.h"
alokp@chromium.orge4249f02010-07-26 18:13:52 +000021#include "compiler/SymbolTable.h"
alokp@chromium.org07620a52010-09-23 17:53:56 +000022#include "compiler/VariableInfo.h"
daniel@transgaming.com4f39fd92010-03-08 20:26:45 +000023
24class TCompiler;
daniel@transgaming.com4f39fd92010-03-08 20:26:45 +000025
26//
27// The base class used to back handles returned to the driver.
28//
29class TShHandleBase {
30public:
alokp@chromium.orgbafcbaa2010-11-23 19:07:43 +000031 TShHandleBase();
32 virtual ~TShHandleBase();
daniel@transgaming.com4f39fd92010-03-08 20:26:45 +000033 virtual TCompiler* getAsCompiler() { return 0; }
alokp@chromium.orgbafcbaa2010-11-23 19:07:43 +000034
35protected:
36 // Memory allocator. Allocates and tracks memory required by the compiler.
37 // Deallocates all memory when compiler is destructed.
38 TPoolAllocator allocator;
daniel@transgaming.com4f39fd92010-03-08 20:26:45 +000039};
40
41//
daniel@transgaming.com4f39fd92010-03-08 20:26:45 +000042// The base class for the machine dependent compiler to derive from
43// for managing object code from the compile.
44//
45class TCompiler : public TShHandleBase {
46public:
alokp@chromium.org4888ceb2010-10-01 21:13:12 +000047 TCompiler(ShShaderType type, ShShaderSpec spec);
48 virtual ~TCompiler();
daniel@transgaming.com4f39fd92010-03-08 20:26:45 +000049 virtual TCompiler* getAsCompiler() { return this; }
alokp@chromium.org76b82082010-03-24 17:59:39 +000050
alokp@chromium.org4888ceb2010-10-01 21:13:12 +000051 bool Init(const ShBuiltInResources& resources);
alokp@chromium.org07620a52010-09-23 17:53:56 +000052 bool compile(const char* const shaderStrings[],
53 const int numStrings,
54 int compileOptions);
55
56 // Get results of the last compilation.
57 TInfoSink& getInfoSink() { return infoSink; }
58 const TVariableInfoList& getAttribs() const { return attribs; }
59 const TVariableInfoList& getUniforms() const { return uniforms; }
60
daniel@transgaming.com4f39fd92010-03-08 20:26:45 +000061protected:
alokp@chromium.org9ecf3952010-10-13 19:28:25 +000062 ShShaderType getShaderType() const { return shaderType; }
63 ShShaderSpec getShaderSpec() const { return shaderSpec; }
alokp@chromium.org07620a52010-09-23 17:53:56 +000064 // Initialize symbol-table with built-in symbols.
alokp@chromium.org4888ceb2010-10-01 21:13:12 +000065 bool InitBuiltInSymbolTable(const ShBuiltInResources& resources);
alokp@chromium.org07620a52010-09-23 17:53:56 +000066 // Clears the results from the previous compilation.
67 void clearResults();
68 // Collect info for all attribs and uniforms.
69 void collectAttribsUniforms(TIntermNode* root);
70 // Translate to object code.
71 virtual void translate(TIntermNode* root) = 0;
72
73private:
alokp@chromium.org4888ceb2010-10-01 21:13:12 +000074 ShShaderType shaderType;
75 ShShaderSpec shaderSpec;
alokp@chromium.orge4249f02010-07-26 18:13:52 +000076
77 // Built-in symbol table for the given language, spec, and resources.
78 // It is preserved from compile-to-compile.
79 TSymbolTable symbolTable;
alokp@chromium.orgad771eb2010-09-07 17:36:23 +000080 // Built-in extensions with default behavior.
81 TExtensionBehavior extensionBehavior;
alokp@chromium.org07620a52010-09-23 17:53:56 +000082
83 // Results of compilation.
84 TInfoSink infoSink; // Output sink.
85 TVariableInfoList attribs; // Active attributes in the compiled shader.
86 TVariableInfoList uniforms; // Active uniforms in the compiled shader.
daniel@transgaming.com4f39fd92010-03-08 20:26:45 +000087};
88
89//
90// This is the interface between the machine independent code
91// and the machine dependent code.
92//
93// The machine dependent code should derive from the classes
94// above. Then Construct*() and Delete*() will create and
95// destroy the machine dependent objects, which contain the
96// above machine independent information.
97//
alokp@chromium.org4888ceb2010-10-01 21:13:12 +000098TCompiler* ConstructCompiler(ShShaderType type, ShShaderSpec spec);
daniel@transgaming.com4f39fd92010-03-08 20:26:45 +000099void DeleteCompiler(TCompiler*);
100
daniel@transgaming.com4f39fd92010-03-08 20:26:45 +0000101#endif // _SHHANDLE_INCLUDED_