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#ifndef __ASURA_ENGINE_OPENGL_H__
#define __ASURA_ENGINE_OPENGL_H__
#include <stack>
#include <glad/glad.h>
#include <asura-utils/scripting/portable.hpp>
#include <asura-utils/math/rect.hpp>
#include <asura-utils/math/matrix44.h>
#include "matrix_stack.h"
namespace AsuraEngine
{
namespace Graphics
{
class Profiler;
class Shader;
enum MatrixMode
{
MATRIX_PROJECTION = 0,
MATRIX_MODELVIEW = 1,
};
///
/// OpenGLģһЩopengl״̬١ڱ༭രڻ£һڶӦһhwnd
/// һhdcԼopengl contextʹwglMakeCurrent(hdc, glc)ָǰ̶߳
/// Ⱦhdcopenglglcglм¼ľһ̵߳һڵһOpenGL
/// ĵ״ֶ̬֧Ⱦ
///
class OpenGL : public AEScripting::Portable<OpenGL>
{
public:
LUAX_DECL_SINGLETON(GL);
OpenGL();
~OpenGL();
void SetViewport(const AEMath::Recti viewport);
AEMath::Recti GetViewport();
void UseShader(Shader* shader);
void UnuseShader();
void SetMatrixMode(MatrixMode mode);
MatrixMode GetMatrixMode();
void PushMatrix();
void PopMatrix();
void LoadIdentity();
void Rotate(float angle, float x, float y, float z);
void Translate(float x, float y, float z);
void Scale(float x, float y, float z);
void Ortho(float l, float r, float b, float t, float n, float f);
AEMath::Matrix44& GetMatrix(MatrixMode mode);
uint GetMatrixDepth();
uint GetMatrixIndex();
///
/// OpenGL3.0Ժû任ӿڡshaderȲﱣһЩOpenGL״̬ע
/// ƺȫ̵ģҲ˵Asuraֶ֧߳ȾOpenGLĵĴʹһ
/// İһHDC\ϣڴض̴߳ģOpenGLҲһ
/// ض̡߳ͬһ̵߳IJͬHDC\ڿԹͬһOpenGLġΪ
/// дtextuer\shaderhandle
///
struct
{
Shader* shader; ///< ǰʹõshader
AEMath::Recti viewport; ///< ǰлHDC߱ڴСı߲ˢʱ䶯
MatrixStack matrix[2]; ///< 任
MatrixMode matrixMode; ///< ǰľ
} state;
private:
friend class Profiler;
//----------------------------------------------------------------------------//
LUAX_DECL_ENUM(MatrixMode, 0);
LUAX_DECL_METHOD(_SetMatrixMode);
LUAX_DECL_METHOD(_GetMatrixMode);
LUAX_DECL_METHOD(_PushMatrix);
LUAX_DECL_METHOD(_PopMatrix);
LUAX_DECL_METHOD(_LoadIdentity);
LUAX_DECL_METHOD(_Rotate);
LUAX_DECL_METHOD(_Translate);
LUAX_DECL_METHOD(_Scale);
LUAX_DECL_METHOD(_Ortho);
LUAX_DECL_METHOD(_GetMatrixDepth);
LUAX_DECL_METHOD(_GetMatrixIndex);
LUAX_DECL_METHOD(_UseShader);
LUAX_DECL_METHOD(_UnuseShader);
//----------------------------------------------------------------------------//
};
///
/// OpenGL
///
extern OpenGL gl;
}
}
#endif
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