/*************************************************************************/ /* context_gl_win.cpp */ /*************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ /* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */ /* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md) */ /* */ /* Permission is hereby granted, free of charge, to any person obtaining */ /* a copy of this software and associated documentation files (the */ /* "Software"), to deal in the Software without restriction, including */ /* without limitation the rights to use, copy, modify, merge, publish, */ /* distribute, sublicense, and/or sell copies of the Software, and to */ /* permit persons to whom the Software is furnished to do so, subject to */ /* the following conditions: */ /* */ /* The above copyright notice and this permission notice shall be */ /* included in all copies or substantial portions of the Software. */ /* */ /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ /*************************************************************************/ #if defined(OPENGL_ENABLED) || defined(GLES_ENABLED) // Author: Juan Linietsky <reduzio@gmail.com>, (C) 2008 #include "context_gl_win.h" #define WGL_CONTEXT_MAJOR_VERSION_ARB 0x2091 #define WGL_CONTEXT_MINOR_VERSION_ARB 0x2092 #define WGL_CONTEXT_FLAGS_ARB 0x2094 #define WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB 0x00000002 #define WGL_CONTEXT_PROFILE_MASK_ARB 0x9126 #define WGL_CONTEXT_CORE_PROFILE_BIT_ARB 0x00000001 typedef HGLRC(APIENTRY *PFNWGLCREATECONTEXTATTRIBSARBPROC)(HDC, HGLRC, const int *); void ContextGL_Win::release_current() { wglMakeCurrent(hDC, NULL); } void ContextGL_Win::make_current() { wglMakeCurrent(hDC, hRC); } int ContextGL_Win::get_window_width() { return OS::get_singleton()->get_video_mode().width; } int ContextGL_Win::get_window_height() { return OS::get_singleton()->get_video_mode().height; } void ContextGL_Win::swap_buffers() { SwapBuffers(hDC); } /* static GLWrapperFuncPtr wrapper_get_proc_address(const char* p_function) { print_line(String()+"getting proc of: "+p_function); GLWrapperFuncPtr func=(GLWrapperFuncPtr)get_gl_proc_address(p_function); if (!func) { print_line("Couldn't find function: "+String(p_function)); print_line("error: "+itos(GetLastError())); } return func; } */ void ContextGL_Win::set_use_vsync(bool p_use) { if (wglSwapIntervalEXT) { wglSwapIntervalEXT(p_use ? 1 : 0); } use_vsync = p_use; } bool ContextGL_Win::is_using_vsync() const { return use_vsync; } #define _WGL_CONTEXT_DEBUG_BIT_ARB 0x0001 Error ContextGL_Win::initialize() { static PIXELFORMATDESCRIPTOR pfd = { sizeof(PIXELFORMATDESCRIPTOR), // Size Of This Pixel Format Descriptor 1, PFD_DRAW_TO_WINDOW | // Format Must Support Window PFD_SUPPORT_OPENGL | // Format Must Support OpenGL PFD_DOUBLEBUFFER, PFD_TYPE_RGBA, OS::get_singleton()->is_layered_allowed() ? 32 : 24, 0, 0, 0, 0, 0, 0, // Color Bits Ignored OS::get_singleton()->is_layered_allowed() ? 8 : 0, // Alpha Buffer 0, // Shift Bit Ignored 0, // No Accumulation Buffer 0, 0, 0, 0, // Accumulation Bits Ignored 24, // 24Bit Z-Buffer (Depth Buffer) 0, // No Stencil Buffer 0, // No Auxiliary Buffer PFD_MAIN_PLANE, // Main Drawing Layer 0, // Reserved 0, 0, 0 // Layer Masks Ignored }; hDC = GetDC(hWnd); if (!hDC) { MessageBox(NULL, "Can't Create A GL Device Context.", "ERROR", MB_OK | MB_ICONEXCLAMATION); return ERR_CANT_CREATE; // Return FALSE } pixel_format = ChoosePixelFormat(hDC, &pfd); if (!pixel_format) // Did Windows Find A Matching Pixel Format? { MessageBox(NULL, "Can't Find A Suitable pixel_format.", "ERROR", MB_OK | MB_ICONEXCLAMATION); return ERR_CANT_CREATE; // Return FALSE } BOOL ret = SetPixelFormat(hDC, pixel_format, &pfd); if (!ret) // Are We Able To Set The Pixel Format? { MessageBox(NULL, "Can't Set The pixel_format.", "ERROR", MB_OK | MB_ICONEXCLAMATION); return ERR_CANT_CREATE; // Return FALSE } hRC = wglCreateContext(hDC); if (!hRC) // Are We Able To Get A Rendering Context? { MessageBox(NULL, "Can't Create A Temporary GL Rendering Context.", "ERROR", MB_OK | MB_ICONEXCLAMATION); return ERR_CANT_CREATE; // Return FALSE } wglMakeCurrent(hDC, hRC); if (opengl_3_context) { int attribs[] = { WGL_CONTEXT_MAJOR_VERSION_ARB, 3, //we want a 3.3 context WGL_CONTEXT_MINOR_VERSION_ARB, 3, //and it shall be forward compatible so that we can only use up to date functionality WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB, WGL_CONTEXT_FLAGS_ARB, WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB /*| _WGL_CONTEXT_DEBUG_BIT_ARB*/, 0 }; //zero indicates the end of the array PFNWGLCREATECONTEXTATTRIBSARBPROC wglCreateContextAttribsARB = NULL; //pointer to the method wglCreateContextAttribsARB = (PFNWGLCREATECONTEXTATTRIBSARBPROC)wglGetProcAddress("wglCreateContextAttribsARB"); if (wglCreateContextAttribsARB == NULL) //OpenGL 3.0 is not supported { MessageBox(NULL, "Cannot get Proc Address for CreateContextAttribs", "ERROR", MB_OK | MB_ICONEXCLAMATION); wglDeleteContext(hRC); return ERR_CANT_CREATE; } HGLRC new_hRC = wglCreateContextAttribsARB(hDC, 0, attribs); if (!new_hRC) { wglDeleteContext(hRC); MessageBox(NULL, "Can't Create An OpenGL 3.3 Rendering Context.", "ERROR", MB_OK | MB_ICONEXCLAMATION); return ERR_CANT_CREATE; // Return false } wglMakeCurrent(hDC, NULL); wglDeleteContext(hRC); hRC = new_hRC; if (!wglMakeCurrent(hDC, hRC)) // Try To Activate The Rendering Context { MessageBox(NULL, "Can't Activate The GL 3.3 Rendering Context.", "ERROR", MB_OK | MB_ICONEXCLAMATION); return ERR_CANT_CREATE; // Return FALSE } } wglSwapIntervalEXT = (PFNWGLSWAPINTERVALEXTPROC)wglGetProcAddress("wglSwapIntervalEXT"); //glWrapperInit(wrapper_get_proc_address); return OK; } ContextGL_Win::ContextGL_Win(HWND hwnd, bool p_opengl_3_context) { opengl_3_context = p_opengl_3_context; hWnd = hwnd; use_vsync = false; } ContextGL_Win::~ContextGL_Win() { } #endif