Home | History | Annotate | Download | only in glshared 
      1 #ifndef _GLSSHADEREXECUTIL_HPP
      2 #define _GLSSHADEREXECUTIL_HPP
      3 /*-------------------------------------------------------------------------
      4  * drawElements Quality Program OpenGL (ES) Module
      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 Shader execution utilities.
     24  *//*--------------------------------------------------------------------*/
     25 
     26 #include "tcuDefs.hpp"
     27 #include "gluVarType.hpp"
     28 #include "gluShaderUtil.hpp"
     29 
     30 namespace tcu
     31 {
     32 class TestLog;
     33 }
     34 
     35 namespace glu
     36 {
     37 class RenderContext;
     38 }
     39 
     40 namespace deqp
     41 {
     42 namespace gls
     43 {
     44 namespace ShaderExecUtil
     45 {
     46 
     47 //! Shader input / output variable declaration.
     48 struct Symbol
     49 {
     50 	std::string			name;		//!< Symbol name.
     51 	glu::VarType		varType;	//!< Symbol type.
     52 
     53 	Symbol (void) {}
     54 	Symbol (const std::string& name_, const glu::VarType& varType_) : name(name_), varType(varType_) {}
     55 };
     56 
     57 //! Complete shader specification.
     58 struct ShaderSpec
     59 {
     60 	glu::GLSLVersion		version;				//!< Shader version.
     61 	std::vector<Symbol>		inputs;
     62 	std::vector<Symbol>		outputs;
     63 	std::string				globalDeclarations;		//!< These are placed into global scope. Can contain uniform declarations for example.
     64 	std::string				source;					//!< Source snippet to be executed.
     65 
     66 	ShaderSpec (void) : version(glu::GLSL_VERSION_300_ES) {}
     67 };
     68 
     69 //! Base class for shader executor.
     70 class ShaderExecutor
     71 {
     72 public:
     73 	virtual						~ShaderExecutor			(void);
     74 
     75 	//! Check if executor can be used.
     76 	virtual bool				isOk					(void) const = 0;
     77 
     78 	//! Log executor details (program etc.).
     79 	virtual void				log						(tcu::TestLog& log) const = 0;
     80 
     81 	//! Get program.
     82 	virtual deUint32			getProgram				(void) const = 0;
     83 
     84 	//! Set this shader program current in context. Must be called before execute().
     85 	virtual void				useProgram				(void);
     86 
     87 	//! Execute active program. useProgram() must be called before this.
     88 	virtual void				execute					(int numValues, const void* const* inputs, void* const* outputs) = 0;
     89 
     90 protected:
     91 								ShaderExecutor			(const glu::RenderContext& renderCtx, const ShaderSpec& shaderSpec);
     92 
     93 	const glu::RenderContext&	m_renderCtx;
     94 
     95 	std::vector<Symbol>			m_inputs;
     96 	std::vector<Symbol>			m_outputs;
     97 };
     98 
     99 inline tcu::TestLog& operator<< (tcu::TestLog& log, const ShaderExecutor* executor) { executor->log(log);	return log; }
    100 inline tcu::TestLog& operator<< (tcu::TestLog& log, const ShaderExecutor& executor) { executor.log(log);	return log; }
    101 
    102 ShaderExecutor* createExecutor (const glu::RenderContext& renderCtx, glu::ShaderType shaderType, const ShaderSpec& shaderSpec);
    103 
    104 } // ShaderExecUtil
    105 } // gls
    106 } // deqp
    107 
    108 #endif // _GLSSHADEREXECUTIL_HPP
    109