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#ifndef __ASURA_ENGINE_OPENGL_H__
#define __ASURA_ENGINE_OPENGL_H__
#include <stack>
#include <glad/glad.h>
#include <asura-utils/math/rect.hpp>
#include <asura-utils/math/matrix44.h>
#include "matrix_stack.h"
namespace AsuraEngine
{
namespace Graphics
{
class Profiler;
class Shader;
///
/// OpenGLģһЩopengl״̬١ڱ༭രڻ£һڶӦһhwnd
/// һhdcԼopengl contextʹwglMakeCurrent(hdc, glc)ָǰ̶߳
/// Ⱦhdcopenglglcglм¼ľһ̵߳һڵһOpenGL
/// ĵ״̬
///
class OpenGL
{
public:
OpenGL();
~OpenGL();
void SetViewport(const AEMath::Recti viewport);
AEMath::Recti GetViewport();
void UseShader(Shader* shader);
void UnuseShader();
///
/// OpenGL3.0Ժû任ӿڡshaderȲﱣһЩOpenGL״̬ע
/// ƺȫ̵ģҲ˵Asuraֶ֧߳ȾOpenGLĵĴʹһ
/// İһHDC\ϣڴض̴߳ģOpenGLҲһ
/// ض̡߳ͬһ̵߳IJͬHDC\ڿԹͬһOpenGLġΪ
/// дtextuer\shaderhandle
///
struct
{
Shader* shader; ///< ǰʹõshader
AEMath::Recti viewport; ///< ǰлHDC߱ڴСı߲ˢʱ䶯
MatrixStack projectionMatrix; ///< ͶӰ
MatrixStack modelViewMatrix; ///< 任
} state;
private:
friend class Profiler;
};
///
/// OpenGL
///
extern OpenGL gl;
}
}
#endif
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