bool GLRenderer::initialize(EGLNativeWindowType window)
#endif
{
#ifndef IOS
Log("Initializing OpenGL");
if(!InitEGL(window))
{
Log("[GlesCube] GlesCube can run on systems which supports OpenGL ES(R) 2.0.");
Log("[GlesCube] When GlesCube does not correctly execute, there are a few reasons.");
Log("[GlesCube] 1. The current device(real-target or simulator) does not support OpenGL ES(R) 2.0. Check the Release Notes.");
Log("[GlesCube] 2. The system running on simulator cannot support OpenGL(R) 2.1 or later. Try with other system.");
Log("[GlesCube] 3. The system running on simulator does not maintain the latest graphics driver. Update the graphics driver.");
DestroyGL();
return false;
}
#endif
if(!InitGL())
{
return false;
}
return true;
}
// 创建opengl窗口
BOOL GLWindow::CreateGlWnd(const char* title, int x, int y, int width, int height)
{
m_width = width;
m_height = height;
RECT windowRect = { 0, 0, width, height };
DWORD windowStyle = WS_OVERLAPPEDWINDOW; // 预留做全屏
DWORD windowExStyle = WS_EX_APPWINDOW; // 扩展样式
// 全屏处理 - 预留
// 窗口样式
//windowStyle = WS_POPUP;
//windowExStyle |= WS_EX_TOPMOST;
::AdjustWindowRectEx(&windowRect, windowStyle, 0, windowExStyle); // 调整窗口
CreateEx(0, "OpenGL", title, WS_OVERLAPPEDWINDOW | WS_VISIBLE | WS_CLIPSIBLINGS | WS_CLIPCHILDREN,
x, y, windowRect.right - windowRect.left, windowRect.bottom - windowRect.top, NULL, NULL);
if (!(m_hDc = GetDC(m_hWnd))) // 获取DC
{
DestroyGL(); // 销毁
return FALSE; // 不能获取DC
}
m_timerFrame = 1000; // 初始化
GLuint PixelFormat;
static PIXELFORMATDESCRIPTOR pdf = {
sizeof(PIXELFORMATDESCRIPTOR), // 结构体大小
1, // 版本号
PFD_DRAW_TO_WINDOW | // 支持窗口
PFD_SUPPORT_OPENGL | // 支持opengl
PFD_DOUBLEBUFFER, // 支持双缓冲
PFD_TYPE_RGBA, // 申请RGBA格式
32, // 色彩深度
0, 0, 0, 0, 0, 0, // 忽略的色彩位
0, // 无alpha缓存
0, // 无shift Bit
0, // 无累加缓存
0, 0, 0, 0, // 忽略聚集位
24, // 16位Z-缓存
8, // 无蒙版缓存
0, // 无辅助缓存
PFD_MAIN_PLANE, // 主绘图层
0, // Reserved
0, 0, 0 // 忽略层遮罩
};
if (!(PixelFormat = ChoosePixelFormat(m_hDc, &pdf))) // 寻找相应像素格式
{
DestroyGL(); // 销毁
// printf("1====error choose====");
return FALSE;
}
if (!SetPixelFormat(m_hDc, PixelFormat, &pdf))
{
DestroyGL();
// printf("1====error choose====");
return FALSE;
// 不能设置像素格式
}
HGLRC tempContext;
if (!(tempContext = wglCreateContext(m_hDc)))
{
DestroyGL();
// printf("2====error create context====");
return FALSE; // 不能获得着色描述表
}
if (!wglMakeCurrent(m_hDc, tempContext)) // 开启低版本opengl
{
DestroyGL();
// printf("3========");
return FALSE; // 不能激活当前opengl渲染描述表
}
if (GLEW_OK != glewInit())
{
DestroyGL();
return FALSE; // glew初始化失败
}
// 开启 opengl 4.3 支持
GLint attribs[] = { WGL_CONTEXT_MAJOR_VERSION_ARB, 4, // 主版本4
WGL_CONTEXT_MINOR_VERSION_ARB, 3, // 次版本号3
WGL_CONTEXT_PROFILE_MASK_ARB,WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB,//要求返回兼容模式环境,如果不指定或指定为WGL_CONTEXT_CORE_PROFILE_BIT_ARB会返回只包含核心功能的环境
0
};
if (wglewIsSupported("WGL_ARB_create_context") == 1)
{
m_hRc = wglCreateContextAttribsARB(m_hDc, 0, attribs);
wglMakeCurrent(NULL, NULL);
wglDeleteContext(tempContext);
int result = wglMakeCurrent(m_hDc, m_hRc); // 设置opengl 4.3
if (result != 1)
{
return FALSE;
}
}
else
{ // 不支持opengl4.X 还原为opengl 2.1
m_hRc = tempContext;
}
//RECT rect; // 客户区大小
//::GetClientRect(m_hWnd, &rect);
//ResizeGLScene(rect.right - rect.left, rect.bottom - rect.top); // 设置GL屏幕 (注意，这里只使用客户区计算)
ResizeGLScene(width, height);
if (!initGL()) // 初始化opengl
{
DestroyGL();
return FALSE;
}
// 设定计时器 每秒刷新60次
SetTimer(m_hWnd, m_timerFrame, 1000 / 60, NULL);
return TRUE;
}
LRESULT GLWindow::OnDestroy(WPARAM wParam, LPARAM lParam)
{
DestroyGL(); // 退出程序前销毁opengl
PostQuitMessage(0);
return 0;
}
void GLRenderer::Cleanup()
{
DestroyGL();
}
GLRenderer::~GLRenderer()
{
DestroyGL();
}
bool GLRenderer::InitEGL(EGLNativeWindowType window)
{
EGLint numConfigs = 1;
EGLint eglConfigList[] = {
EGL_RED_SIZE, 5,
EGL_GREEN_SIZE, 6,
EGL_BLUE_SIZE, 5,
EGL_ALPHA_SIZE, 0,
EGL_DEPTH_SIZE, 8,
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_NONE
};
EGLint eglContextList[] = {
EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_NONE
};
eglBindAPI(EGL_OPENGL_ES_API);
if(m_eglDisplay)
{
DestroyGL();
}
m_eglDisplay = eglGetDisplay((EGLNativeDisplayType)EGL_DEFAULT_DISPLAY);
if (EGL_NO_DISPLAY == m_eglDisplay)
{
Log("[GlesCube] eglGetDisplay() is failed. [0x%x]\n", eglGetError());
DestroyGL();
return false;
}
if (EGL_FALSE == eglInitialize(m_eglDisplay, null, null) ||
EGL_SUCCESS != eglGetError())
{
Log("[GlesCube] eglInitialize() has been failed. [0x%x]\n", eglGetError());
DestroyGL();
return false;
}
if (EGL_FALSE == eglChooseConfig(m_eglDisplay, eglConfigList, &m_eglConfig, 1, &numConfigs) ||
EGL_SUCCESS != eglGetError())
{
Log("[GlesCube] eglChooseConfig() has been failed. [0x%x]\n", eglGetError());
DestroyGL();
return false;
}
if (!numConfigs)
{
Log("[GlesCube] eglChooseConfig() has been failed. because of matching config doesn't exist \n");
DestroyGL();
return false;
}
m_eglSurface = eglCreateWindowSurface(m_eglDisplay, m_eglConfig, window, null);
if (EGL_NO_SURFACE == m_eglSurface ||
EGL_SUCCESS != eglGetError())
{
Log("[GlesCube] eglCreateWindowSurface() has been failed. EGL_NO_SURFACE [0x%x]\n", eglGetError());
DestroyGL();
return false;
}
m_eglContext = eglCreateContext(m_eglDisplay, m_eglConfig, EGL_NO_CONTEXT, eglContextList);
if (EGL_NO_CONTEXT == m_eglContext ||
EGL_SUCCESS != eglGetError())
{
Log("[GlesCube] eglCreateContext() has been failed. [0x%x]\n", eglGetError());
DestroyGL();
return false;
}
if (EGL_FALSE == eglMakeCurrent(m_eglDisplay, m_eglSurface, m_eglSurface, m_eglContext) ||
EGL_SUCCESS != eglGetError())
{
Log("[GlesCube] eglMakeCurrent() has been failed. [0x%x]\n", eglGetError());
DestroyGL();
return false;
}
return true;
}
void CIdleOpenGLWnd::OnDestroy()
{
DestroyGL(m_hrc);
MSG_FORWARD_WM_DESTROY(COpenGLWnd);
}
