190 lines
7.7 KiB
C++
190 lines
7.7 KiB
C++
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/**************************************************************************/
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/* wgl_detect_version.cpp */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#if defined(WINDOWS_ENABLED) && defined(GLES3_ENABLED)
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#include "wgl_detect_version.h"
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#include "os_windows.h"
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#include "core/string/print_string.h"
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#include "core/string/ustring.h"
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#include <windows.h>
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#include <dwmapi.h>
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#include <stdio.h>
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#include <stdlib.h>
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#define WGL_CONTEXT_MAJOR_VERSION_ARB 0x2091
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#define WGL_CONTEXT_MINOR_VERSION_ARB 0x2092
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#define WGL_CONTEXT_FLAGS_ARB 0x2094
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#define WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB 0x00000002
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#define WGL_CONTEXT_PROFILE_MASK_ARB 0x9126
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#define WGL_CONTEXT_CORE_PROFILE_BIT_ARB 0x00000001
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#define WGL_VENDOR 0x1F00
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#define WGL_RENDERER 0x1F01
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#define WGL_VERSION 0x1F02
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#if defined(__GNUC__)
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// Workaround GCC warning from -Wcast-function-type.
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#define GetProcAddress (void *)GetProcAddress
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#endif
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typedef HGLRC(APIENTRY *PFNWGLCREATECONTEXT)(HDC);
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typedef BOOL(APIENTRY *PFNWGLDELETECONTEXT)(HGLRC);
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typedef BOOL(APIENTRY *PFNWGLMAKECURRENT)(HDC, HGLRC);
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typedef HGLRC(APIENTRY *PFNWGLCREATECONTEXTATTRIBSARBPROC)(HDC, HGLRC, const int *);
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typedef void *(APIENTRY *PFNWGLGETPROCADDRESS)(LPCSTR);
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typedef const char *(APIENTRY *PFNWGLGETSTRINGPROC)(unsigned int);
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int detect_wgl_version() {
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int major = 0;
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int minor = 0;
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PFNWGLCREATECONTEXT gd_wglCreateContext;
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PFNWGLMAKECURRENT gd_wglMakeCurrent;
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PFNWGLDELETECONTEXT gd_wglDeleteContext;
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PFNWGLGETPROCADDRESS gd_wglGetProcAddress;
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HMODULE module = LoadLibraryW(L"opengl32.dll");
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if (!module) {
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return 0;
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}
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gd_wglCreateContext = (PFNWGLCREATECONTEXT)GetProcAddress(module, "wglCreateContext");
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gd_wglMakeCurrent = (PFNWGLMAKECURRENT)GetProcAddress(module, "wglMakeCurrent");
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gd_wglDeleteContext = (PFNWGLDELETECONTEXT)GetProcAddress(module, "wglDeleteContext");
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gd_wglGetProcAddress = (PFNWGLGETPROCADDRESS)GetProcAddress(module, "wglGetProcAddress");
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if (!gd_wglCreateContext || !gd_wglMakeCurrent || !gd_wglDeleteContext || !gd_wglGetProcAddress) {
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return 0;
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}
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LPCWSTR class_name = L"EngineWGLDetect";
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HINSTANCE hInstance = static_cast<OS_Windows *>(OS::get_singleton())->get_hinstance();
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WNDCLASSW wc = {};
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wc.lpfnWndProc = DefWindowProcW;
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wc.hInstance = hInstance;
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wc.lpszClassName = class_name;
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RegisterClassW(&wc);
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HWND hWnd = CreateWindowExW(WS_EX_APPWINDOW, class_name, L"", WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, nullptr, nullptr, hInstance, nullptr);
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if (hWnd) {
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HDC hDC = GetDC(hWnd);
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if (hDC) {
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static PIXELFORMATDESCRIPTOR pfd = {
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sizeof(PIXELFORMATDESCRIPTOR), // Size Of This Pixel Format Descriptor
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1,
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PFD_DRAW_TO_WINDOW | // Format Must Support Window
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PFD_SUPPORT_OPENGL | // Format Must Support OpenGL
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PFD_DOUBLEBUFFER,
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(BYTE)PFD_TYPE_RGBA,
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(BYTE)(OS::get_singleton()->is_layered_allowed() ? 32 : 24),
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(BYTE)0, (BYTE)0, (BYTE)0, (BYTE)0, (BYTE)0, (BYTE)0, // Color Bits Ignored
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(BYTE)(OS::get_singleton()->is_layered_allowed() ? 8 : 0), // Alpha Buffer
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(BYTE)0, // Shift Bit Ignored
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(BYTE)0, // No Accumulation Buffer
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(BYTE)0, (BYTE)0, (BYTE)0, (BYTE)0, // Accumulation Bits Ignored
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(BYTE)24, // 24Bit Z-Buffer (Depth Buffer)
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(BYTE)0, // No Stencil Buffer
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(BYTE)0, // No Auxiliary Buffer
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(BYTE)PFD_MAIN_PLANE, // Main Drawing Layer
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(BYTE)0, // Reserved
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0, 0, 0 // Layer Masks Ignored
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};
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int pixel_format = ChoosePixelFormat(hDC, &pfd);
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SetPixelFormat(hDC, pixel_format, &pfd);
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HGLRC hRC = gd_wglCreateContext(hDC);
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if (hRC) {
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if (gd_wglMakeCurrent(hDC, hRC)) {
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int attribs[] = {
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WGL_CONTEXT_MAJOR_VERSION_ARB, 3,
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WGL_CONTEXT_MINOR_VERSION_ARB, 3,
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WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB,
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WGL_CONTEXT_FLAGS_ARB, WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB,
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0
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};
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PFNWGLCREATECONTEXTATTRIBSARBPROC gd_wglCreateContextAttribsARB = nullptr;
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gd_wglCreateContextAttribsARB = (PFNWGLCREATECONTEXTATTRIBSARBPROC)gd_wglGetProcAddress("wglCreateContextAttribsARB");
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if (gd_wglCreateContextAttribsARB) {
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HGLRC new_hRC = gd_wglCreateContextAttribsARB(hDC, 0, attribs);
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if (new_hRC) {
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if (gd_wglMakeCurrent(hDC, new_hRC)) {
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PFNWGLGETSTRINGPROC gd_wglGetString = (PFNWGLGETSTRINGPROC)GetProcAddress(module, "glGetString");
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if (gd_wglGetString) {
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const char *prefixes[] = {
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"OpenGL ES-CM ",
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"OpenGL ES-CL ",
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"OpenGL ES ",
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"OpenGL SC ",
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nullptr
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};
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const char *version = (const char *)gd_wglGetString(WGL_VERSION);
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if (version) {
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const String device_vendor = String::utf8((const char *)gd_wglGetString(WGL_VENDOR)).strip_edges();
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const String device_name = String::utf8((const char *)gd_wglGetString(WGL_RENDERER)).strip_edges();
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for (int i = 0; prefixes[i]; i++) {
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size_t length = strlen(prefixes[i]);
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if (strncmp(version, prefixes[i], length) == 0) {
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version += length;
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break;
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}
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}
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#ifdef _MSC_VER
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sscanf_s(version, "%d.%d", &major, &minor);
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#else
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sscanf(version, "%d.%d", &major, &minor);
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#endif
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print_verbose(vformat("Native OpenGL API detected: %d.%d: %s - %s", major, minor, device_vendor, device_name));
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}
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}
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}
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gd_wglMakeCurrent(nullptr, nullptr);
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gd_wglDeleteContext(new_hRC);
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}
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}
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}
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gd_wglMakeCurrent(nullptr, nullptr);
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gd_wglDeleteContext(hRC);
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}
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ReleaseDC(hWnd, hDC);
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}
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DestroyWindow(hWnd);
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}
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UnregisterClassW(class_name, hInstance);
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return major * 10000 + minor;
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}
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#endif // WINDOWS_ENABLED && GLES3_ENABLED
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