diff options
Diffstat (limited to 'platform/windows/wgl_detect_version.cpp')
| -rw-r--r-- | platform/windows/wgl_detect_version.cpp | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/platform/windows/wgl_detect_version.cpp b/platform/windows/wgl_detect_version.cpp new file mode 100644 index 0000000000..264cd525c5 --- /dev/null +++ b/platform/windows/wgl_detect_version.cpp @@ -0,0 +1,189 @@ +/**************************************************************************/ +/* wgl_detect_version.cpp */ +/**************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/**************************************************************************/ +/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */ +/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */ +/* */ +/* 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(WINDOWS_ENABLED) && defined(GLES3_ENABLED) + +#include "wgl_detect_version.h" +#include "os_windows.h" + +#include "core/string/print_string.h" +#include "core/string/ustring.h" + +#include <windows.h> + +#include <dwmapi.h> +#include <stdio.h> +#include <stdlib.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 +#define WGL_VENDOR 0x1F00 +#define WGL_RENDERER 0x1F01 +#define WGL_VERSION 0x1F02 + +#if defined(__GNUC__) +// Workaround GCC warning from -Wcast-function-type. +#define GetProcAddress (void *)GetProcAddress +#endif + +typedef HGLRC(APIENTRY *PFNWGLCREATECONTEXT)(HDC); +typedef BOOL(APIENTRY *PFNWGLDELETECONTEXT)(HGLRC); +typedef BOOL(APIENTRY *PFNWGLMAKECURRENT)(HDC, HGLRC); +typedef HGLRC(APIENTRY *PFNWGLCREATECONTEXTATTRIBSARBPROC)(HDC, HGLRC, const int *); +typedef void *(APIENTRY *PFNWGLGETPROCADDRESS)(LPCSTR); +typedef const char *(APIENTRY *PFNWGLGETSTRINGPROC)(unsigned int); + +int detect_wgl_version() { + int major = 0; + int minor = 0; + + PFNWGLCREATECONTEXT gd_wglCreateContext; + PFNWGLMAKECURRENT gd_wglMakeCurrent; + PFNWGLDELETECONTEXT gd_wglDeleteContext; + PFNWGLGETPROCADDRESS gd_wglGetProcAddress; + + HMODULE module = LoadLibraryW(L"opengl32.dll"); + if (!module) { + return 0; + } + gd_wglCreateContext = (PFNWGLCREATECONTEXT)GetProcAddress(module, "wglCreateContext"); + gd_wglMakeCurrent = (PFNWGLMAKECURRENT)GetProcAddress(module, "wglMakeCurrent"); + gd_wglDeleteContext = (PFNWGLDELETECONTEXT)GetProcAddress(module, "wglDeleteContext"); + gd_wglGetProcAddress = (PFNWGLGETPROCADDRESS)GetProcAddress(module, "wglGetProcAddress"); + if (!gd_wglCreateContext || !gd_wglMakeCurrent || !gd_wglDeleteContext || !gd_wglGetProcAddress) { + return 0; + } + + LPCWSTR class_name = L"EngineWGLDetect"; + HINSTANCE hInstance = static_cast<OS_Windows *>(OS::get_singleton())->get_hinstance(); + WNDCLASSW wc = {}; + + wc.lpfnWndProc = DefWindowProcW; + wc.hInstance = hInstance; + wc.lpszClassName = class_name; + + RegisterClassW(&wc); + + HWND hWnd = CreateWindowExW(WS_EX_APPWINDOW, class_name, L"", WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, nullptr, nullptr, hInstance, nullptr); + if (hWnd) { + HDC hDC = GetDC(hWnd); + if (hDC) { + 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, + (BYTE)PFD_TYPE_RGBA, + (BYTE)(OS::get_singleton()->is_layered_allowed() ? 32 : 24), + (BYTE)0, (BYTE)0, (BYTE)0, (BYTE)0, (BYTE)0, (BYTE)0, // Color Bits Ignored + (BYTE)(OS::get_singleton()->is_layered_allowed() ? 8 : 0), // Alpha Buffer + (BYTE)0, // Shift Bit Ignored + (BYTE)0, // No Accumulation Buffer + (BYTE)0, (BYTE)0, (BYTE)0, (BYTE)0, // Accumulation Bits Ignored + (BYTE)24, // 24Bit Z-Buffer (Depth Buffer) + (BYTE)0, // No Stencil Buffer + (BYTE)0, // No Auxiliary Buffer + (BYTE)PFD_MAIN_PLANE, // Main Drawing Layer + (BYTE)0, // Reserved + 0, 0, 0 // Layer Masks Ignored + }; + + int pixel_format = ChoosePixelFormat(hDC, &pfd); + SetPixelFormat(hDC, pixel_format, &pfd); + + HGLRC hRC = gd_wglCreateContext(hDC); + if (hRC) { + if (gd_wglMakeCurrent(hDC, hRC)) { + int attribs[] = { + WGL_CONTEXT_MAJOR_VERSION_ARB, 3, + WGL_CONTEXT_MINOR_VERSION_ARB, 3, + WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB, + WGL_CONTEXT_FLAGS_ARB, WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB, + 0 + }; + + PFNWGLCREATECONTEXTATTRIBSARBPROC gd_wglCreateContextAttribsARB = nullptr; + gd_wglCreateContextAttribsARB = (PFNWGLCREATECONTEXTATTRIBSARBPROC)gd_wglGetProcAddress("wglCreateContextAttribsARB"); + if (gd_wglCreateContextAttribsARB) { + HGLRC new_hRC = gd_wglCreateContextAttribsARB(hDC, 0, attribs); + if (new_hRC) { + if (gd_wglMakeCurrent(hDC, new_hRC)) { + PFNWGLGETSTRINGPROC gd_wglGetString = (PFNWGLGETSTRINGPROC)GetProcAddress(module, "glGetString"); + if (gd_wglGetString) { + const char *prefixes[] = { + "OpenGL ES-CM ", + "OpenGL ES-CL ", + "OpenGL ES ", + "OpenGL SC ", + nullptr + }; + const char *version = (const char *)gd_wglGetString(WGL_VERSION); + if (version) { + const String device_vendor = String::utf8((const char *)gd_wglGetString(WGL_VENDOR)).strip_edges(); + const String device_name = String::utf8((const char *)gd_wglGetString(WGL_RENDERER)).strip_edges(); + for (int i = 0; prefixes[i]; i++) { + size_t length = strlen(prefixes[i]); + if (strncmp(version, prefixes[i], length) == 0) { + version += length; + break; + } + } +#ifdef _MSC_VER + sscanf_s(version, "%d.%d", &major, &minor); +#else + sscanf(version, "%d.%d", &major, &minor); +#endif + print_verbose(vformat("Native OpenGL API detected: %d.%d: %s - %s", major, minor, device_vendor, device_name)); + } + } + } + gd_wglMakeCurrent(nullptr, nullptr); + gd_wglDeleteContext(new_hRC); + } + } + } + gd_wglMakeCurrent(nullptr, nullptr); + gd_wglDeleteContext(hRC); + } + ReleaseDC(hWnd, hDC); + } + DestroyWindow(hWnd); + } + UnregisterClassW(class_name, hInstance); + + return major * 10000 + minor; +} + +#endif // WINDOWS_ENABLED && GLES3_ENABLED |