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/*
* gl_program.h - GL Program
*
* Copyright (c) 2018 Intel Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Author: Wind Yuan <feng.yuan@intel.com>
*/
#ifndef XCAM_GL_PROGRAM_H
#define XCAM_GL_PROGRAM_H
#include <gles/gles_std.h>
#include <gles/gl_shader.h>
#include <map>
namespace XCam {
class GLProgram
{
public:
typedef std::map<GLuint, SmartPtr<GLShader>> ShaderList;
enum State {
StateIntiated = 0,
StateLinked = 2,
StateInUse = 3,
};
virtual ~GLProgram ();
static SmartPtr<GLProgram> create_program (const char *name = NULL);
GLuint get_program_id () const {
return _program_id;
}
const char *get_name () {
return _name;
}
XCamReturn link_shader (const GLShaderInfo &info);
XCamReturn link_shaders (const GLShaderInfoList &infos);
XCamReturn use ();
XCamReturn disuse ();
virtual XCamReturn work ();
virtual XCamReturn finish ();
protected:
explicit GLProgram (GLuint id, const char *name);
private:
XCamReturn attach_shader (const SmartPtr<GLShader> &shader);
XCamReturn detach_shader (const SmartPtr<GLShader> &shader);
XCamReturn clear_shaders ();
XCamReturn link ();
private:
XCAM_DEAD_COPY (GLProgram);
private:
ShaderList _shaders;
GLuint _program_id;
State _state;
char _name [XCAM_GL_NAME_LENGTH];
};
}
#endif //XCAM_GL_PROGRAM_H
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