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/**************************************************************************/
/* wgl_detect_version.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2024-present Redot Engine contributors */
/* (see REDOT_AUTHORS.md) */
/* 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 "core/variant/dictionary.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);
Dictionary detect_wgl() {
Dictionary gl_info;
gl_info["version"] = 0;
gl_info["vendor"] = String();
gl_info["name"] = String();
PFNWGLCREATECONTEXT gd_wglCreateContext;
PFNWGLMAKECURRENT gd_wglMakeCurrent;
PFNWGLDELETECONTEXT gd_wglDeleteContext;
PFNWGLGETPROCADDRESS gd_wglGetProcAddress;
HMODULE module = LoadLibraryW(L"opengl32.dll");
if (!module) {
return gl_info;
}
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 gl_info;
}
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, nullptr, 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().trim_suffix(" Corporation");
const String device_name = String::utf8((const char *)gd_wglGetString(WGL_RENDERER)).strip_edges().trim_suffix("/PCIe/SSE2");
for (int i = 0; prefixes[i]; i++) {
size_t length = strlen(prefixes[i]);
if (strncmp(version, prefixes[i], length) == 0) {
version += length;
break;
}
}
int major = 0;
int minor = 0;
#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));
gl_info["vendor"] = device_vendor;
gl_info["name"] = device_name;
gl_info["version"] = major * 10000 + minor;
}
}
}
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 gl_info;
}
#endif // WINDOWS_ENABLED && GLES3_ENABLED
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