1#ifndef _RSGGENERATORSTATE_HPP
2#define _RSGGENERATORSTATE_HPP
3/*-------------------------------------------------------------------------
4 * drawElements Quality Program Random Shader Generator
5 * ----------------------------------------------------
6 *
7 * Copyright 2014 The Android Open Source Project
8 *
9 * Licensed under the Apache License, Version 2.0 (the "License");
10 * you may not use this file except in compliance with the License.
11 * You may obtain a copy of the License at
12 *
13 *      http://www.apache.org/licenses/LICENSE-2.0
14 *
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
20 *
21 *//*!
22 * \file
23 * \brief Generator state.
24 *//*--------------------------------------------------------------------*/
25
26#include "rsgDefs.hpp"
27#include "rsgParameters.hpp"
28#include "deRandom.hpp"
29#include "rsgNameAllocator.hpp"
30
31#include <vector>
32
33namespace rsg
34{
35
36class Shader;
37class VariableManager;
38class VariableType;
39class Statement;
40
41enum ExpressionFlags
42{
43	CONST_EXPR			= (1<<0),
44	NO_VAR_ALLOCATION	= (1<<1)
45};
46
47enum
48{
49	PRECEDENCE_MAX		= 100
50};
51
52class GeneratorState
53{
54public:
55								GeneratorState				(const ProgramParameters& programParams, de::Random& random);
56								~GeneratorState				(void);
57
58	const ProgramParameters&	getProgramParameters		(void) const	{ return m_programParams;	}
59	de::Random&					getRandom					(void)			{ return m_random;			}
60
61	const ShaderParameters&		getShaderParameters			(void) const	{ return *m_shaderParams;	}
62	Shader&						getShader					(void)			{ return *m_shader;			}
63
64	void						setShader					(const ShaderParameters& params, Shader& shader);
65
66	NameAllocator&				getNameAllocator			(void)							{ return m_nameAllocator;		}
67	VariableManager&			getVariableManager			(void)							{ return *m_varManager;			}
68	const VariableManager&		getVariableManager			(void) const					{ return *m_varManager;			}
69	void						setVariableManager			(VariableManager& varManager)	{ m_varManager = &varManager;	}
70
71	// \todo [2011-06-10 pyry] Could we not expose whole statement stack to everyone?
72	int							getStatementDepth			(void) const						{ return (int)m_statementStack->size();	}
73	void						setStatementStack			(std::vector<Statement*>& stack)	{ m_statementStack = &stack;			}
74	const Statement*			getStatementStackEntry		(int ndx) const						{ return m_statementStack->at(ndx);		}
75
76	int							getExpressionDepth			(void) const					{ return m_expressionDepth;		}
77	void						setExpressionDepth			(int depth)						{ m_expressionDepth = depth;	}
78
79	// \todo [2011-03-21 pyry] A bit of a hack... Move to ValueRange?
80	deUint32					getExpressionFlags			(void) const					{ return m_exprFlagStack.back();	}
81	void						pushExpressionFlags			(deUint32 flags)				{ m_exprFlagStack.push_back(flags);	}
82	void						popExpressionFlags			(void)							{ m_exprFlagStack.pop_back();		}
83
84	int							getPrecedence				(void) const					{ return m_precedenceStack.back();			}
85	void						pushPrecedence				(int precedence)				{ m_precedenceStack.push_back(precedence);	}
86	void						popPrecedence				(void)							{ m_precedenceStack.pop_back();				}
87
88private:
89	const ProgramParameters&	m_programParams;
90	de::Random&					m_random;
91
92	const ShaderParameters*		m_shaderParams;
93	Shader*						m_shader;
94
95	NameAllocator				m_nameAllocator;
96	VariableManager*			m_varManager;
97
98	std::vector<Statement*>*	m_statementStack;
99	int							m_expressionDepth;
100	std::vector<deUint32>		m_exprFlagStack;
101	std::vector<int>			m_precedenceStack;
102};
103
104} // rsg
105
106#endif // _RSGGENERATORSTATE_HPP
107