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irrlicht/source/Irrlicht/CWGLManager.cpp

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Cleanup line endings (#245) The exact commands to make this commit were: git reset --hard origin/master find -type f | # list all regular files grep -E '\.(h|cpp|fsh|vsh|mm)|LICENSE$' | # filter for text files xargs -n 1 -P $(nproc) sed -i 's:\s*$::' # for each file, trim trailing whitespace including the CR git commit -a
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// Copyright (C) 2013 Christian Stehno
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in Irrlicht.h
#include "CWGLManager.h"
Remove more dead code
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#ifdef _IRR_COMPILE_WITH_WGL_MANAGER_
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#include "os.h"
#include <GL/gl.h>
#include <GL/wglext.h>
namespace irr
{
namespace video
{
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CWGLManager::CWGLManager() :
PrimaryContext(SExposedVideoData(0)), PixelFormat(0), libHandle(NULL)
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{
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#ifdef _DEBUG
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setDebugName("CWGLManager");
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#endif
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memset(FunctionPointers, 0, sizeof(FunctionPointers));
}
CWGLManager::~CWGLManager()
{
}
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bool CWGLManager::initialize(const SIrrlichtCreationParameters &params, const SExposedVideoData &videodata)
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{
// store params, videoData is set later as it would be overwritten else
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Params = params;
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// Create a window to test antialiasing support
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const fschar_t *ClassName = __TEXT("CWGLManager");
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HINSTANCE lhInstance = GetModuleHandle(0);
// Register Class
WNDCLASSEX wcex;
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wcex.cbSize = sizeof(WNDCLASSEX);
wcex.style = CS_HREDRAW | CS_VREDRAW;
wcex.lpfnWndProc = (WNDPROC)DefWindowProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = lhInstance;
wcex.hIcon = 0;
wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
wcex.lpszMenuName = 0;
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wcex.lpszClassName = ClassName;
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wcex.hIconSm = 0;
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RegisterClassEx(&wcex);
RECT clientSize;
clientSize.top = 0;
clientSize.left = 0;
clientSize.right = Params.WindowSize.Width;
clientSize.bottom = Params.WindowSize.Height;
DWORD style = WS_POPUP;
if (!Params.Fullscreen)
style = WS_SYSMENU | WS_BORDER | WS_CAPTION | WS_CLIPCHILDREN | WS_CLIPSIBLINGS;
AdjustWindowRect(&clientSize, style, FALSE);
const s32 realWidth = clientSize.right - clientSize.left;
const s32 realHeight = clientSize.bottom - clientSize.top;
const s32 windowLeft = (GetSystemMetrics(SM_CXSCREEN) - realWidth) / 2;
const s32 windowTop = (GetSystemMetrics(SM_CYSCREEN) - realHeight) / 2;
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HWND temporary_wnd = CreateWindow(ClassName, __TEXT(""), style, windowLeft,
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windowTop, realWidth, realHeight, NULL, NULL, lhInstance, NULL);
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if (!temporary_wnd) {
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os::Printer::log("Cannot create a temporary window.", ELL_ERROR);
UnregisterClass(ClassName, lhInstance);
return false;
}
HDC HDc = GetDC(temporary_wnd);
// Set up pixel format descriptor with desired parameters
PIXELFORMATDESCRIPTOR tmp_pfd = {
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sizeof(PIXELFORMATDESCRIPTOR), // Size Of This Pixel Format Descriptor
1, // Version Number
(DWORD)(PFD_DRAW_TO_WINDOW | // Format Must Support Window
PFD_SUPPORT_OPENGL | // Format Must Support OpenGL
(Params.Doublebuffer ? PFD_DOUBLEBUFFER : 0) | // Must Support Double Buffering
(Params.Stereobuffer ? PFD_STEREO : 0)), // Must Support Stereo Buffer
PFD_TYPE_RGBA, // Request An RGBA Format
Params.Bits, // Select Our Color Depth
0, 0, 0, 0, 0, 0, // Color Bits Ignored
0, // No Alpha Buffer
0, // Shift Bit Ignored
0, // No Accumulation Buffer
0, 0, 0, 0, // Accumulation Bits Ignored
Params.ZBufferBits, // Z-Buffer (Depth Buffer)
BYTE(Params.Stencilbuffer ? 1 : 0), // Stencil Buffer Depth
0, // No Auxiliary Buffer
PFD_MAIN_PLANE, // Main Drawing Layer
0, // Reserved
0, 0, 0 // Layer Masks Ignored
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};
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pfd = tmp_pfd;
for (u32 i = 0; i < 6; ++i) {
if (i == 1) {
if (Params.Stencilbuffer) {
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os::Printer::log("Cannot create a GL device with stencil buffer, disabling stencil shadows.", ELL_WARNING);
Params.Stencilbuffer = false;
pfd.cStencilBits = 0;
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} else
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continue;
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} else if (i == 2) {
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pfd.cDepthBits = 24;
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} else if (i == 3) {
if (Params.Bits != 16)
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pfd.cDepthBits = 16;
else
continue;
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} else if (i == 4) {
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// try single buffer
if (Params.Doublebuffer)
pfd.dwFlags &= ~PFD_DOUBLEBUFFER;
else
continue;
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} else if (i == 5) {
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os::Printer::log("Cannot create a GL device context", "No suitable format for temporary window.", ELL_ERROR);
ReleaseDC(temporary_wnd, HDc);
DestroyWindow(temporary_wnd);
UnregisterClass(ClassName, lhInstance);
return false;
}
// choose pixelformat
PixelFormat = ChoosePixelFormat(HDc, &pfd);
if (PixelFormat)
break;
}
SetPixelFormat(HDc, PixelFormat, &pfd);
os::Printer::log("Create temporary GL rendering context", ELL_DEBUG);
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HGLRC hrc = wglCreateContext(HDc);
if (!hrc) {
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os::Printer::log("Cannot create a temporary GL rendering context.", ELL_ERROR);
ReleaseDC(temporary_wnd, HDc);
DestroyWindow(temporary_wnd);
UnregisterClass(ClassName, lhInstance);
return false;
}
CurrentContext.OpenGLWin32.HDc = HDc;
CurrentContext.OpenGLWin32.HRc = hrc;
CurrentContext.OpenGLWin32.HWnd = temporary_wnd;
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if (!activateContext(CurrentContext, false)) {
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os::Printer::log("Cannot activate a temporary GL rendering context.", ELL_ERROR);
wglDeleteContext(hrc);
ReleaseDC(temporary_wnd, HDc);
DestroyWindow(temporary_wnd);
UnregisterClass(ClassName, lhInstance);
return false;
}
core::stringc wglExtensions;
#ifdef WGL_ARB_extensions_string
PFNWGLGETEXTENSIONSSTRINGARBPROC irrGetExtensionsString = (PFNWGLGETEXTENSIONSSTRINGARBPROC)wglGetProcAddress("wglGetExtensionsStringARB");
if (irrGetExtensionsString)
wglExtensions = irrGetExtensionsString(HDc);
#elif defined(WGL_EXT_extensions_string)
PFNWGLGETEXTENSIONSSTRINGEXTPROC irrGetExtensionsString = (PFNWGLGETEXTENSIONSSTRINGEXTPROC)wglGetProcAddress("wglGetExtensionsStringEXT");
if (irrGetExtensionsString)
wglExtensions = irrGetExtensionsString(HDc);
#endif
const bool pixel_format_supported = (wglExtensions.find("WGL_ARB_pixel_format") != -1);
const bool multi_sample_supported = ((wglExtensions.find("WGL_ARB_multisample") != -1) ||
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(wglExtensions.find("WGL_EXT_multisample") != -1) || (wglExtensions.find("WGL_3DFX_multisample") != -1));
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#ifdef _DEBUG
os::Printer::log("WGL_extensions", wglExtensions);
#endif
// Without a GL context we can't call wglGetProcAddress so store this for later
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FunctionPointers[0] = (void *)wglGetProcAddress("wglCreateContextAttribsARB");
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#ifdef WGL_ARB_pixel_format
PFNWGLCHOOSEPIXELFORMATARBPROC wglChoosePixelFormat_ARB = (PFNWGLCHOOSEPIXELFORMATARBPROC)wglGetProcAddress("wglChoosePixelFormatARB");
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if (pixel_format_supported && wglChoosePixelFormat_ARB) {
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// This value determines the number of samples used for antialiasing
// My experience is that 8 does not show a big
// improvement over 4, but 4 shows a big improvement
// over 2.
if (Params.AntiAlias > 32)
Params.AntiAlias = 32;
f32 fAttributes[] = {0.0, 0.0};
s32 iAttributes[] =
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{
WGL_DRAW_TO_WINDOW_ARB, 1,
WGL_SUPPORT_OPENGL_ARB, 1,
WGL_ACCELERATION_ARB, WGL_FULL_ACCELERATION_ARB,
WGL_COLOR_BITS_ARB, (Params.Bits == 32) ? 24 : 15,
WGL_ALPHA_BITS_ARB, (Params.Bits == 32) ? 8 : 1,
WGL_DEPTH_BITS_ARB, Params.ZBufferBits, // 10,11
WGL_STENCIL_BITS_ARB, Params.Stencilbuffer ? 1 : 0,
WGL_DOUBLE_BUFFER_ARB, Params.Doublebuffer ? 1 : 0,
WGL_STEREO_ARB, Params.Stereobuffer ? 1 : 0,
WGL_PIXEL_TYPE_ARB, WGL_TYPE_RGBA_ARB,
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#ifdef WGL_ARB_multisample
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WGL_SAMPLES_ARB, Params.AntiAlias, // 20,21
WGL_SAMPLE_BUFFERS_ARB, (Params.AntiAlias > 0) ? 1 : 0,
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#elif defined(WGL_EXT_multisample)
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WGL_SAMPLES_EXT, AntiAlias, // 20,21
WGL_SAMPLE_BUFFERS_EXT, (Params.AntiAlias > 0) ? 1 : 0,
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#elif defined(WGL_3DFX_multisample)
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WGL_SAMPLES_3DFX, AntiAlias, // 20,21
WGL_SAMPLE_BUFFERS_3DFX, (Params.AntiAlias > 0) ? 1 : 0,
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#endif
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// WGL_DEPTH_FLOAT_EXT, 1,
0, 0, 0, 0};
int iAttrSize = sizeof(iAttributes) / sizeof(int);
if (!multi_sample_supported) {
memmove(&iAttributes[20], &iAttributes[24], sizeof(int) * (iAttrSize - 24));
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iAttrSize -= 4;
}
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s32 rv = 0;
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// Try to get an acceptable pixel format
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do {
int pixelFormat = 0;
UINT numFormats = 0;
const BOOL valid = wglChoosePixelFormat_ARB(HDc, iAttributes, fAttributes, 1, &pixelFormat, &numFormats);
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if (valid && numFormats)
rv = pixelFormat;
else
iAttributes[21] -= 1;
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} while (rv == 0 && iAttributes[21] > 1);
if (rv) {
PixelFormat = rv;
Params.AntiAlias = iAttributes[21];
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}
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} else
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#endif
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Params.AntiAlias = 0;
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// this only terminates the temporary HRc
destroyContext();
destroySurface();
terminate();
DestroyWindow(temporary_wnd);
UnregisterClass(ClassName, lhInstance);
// now get new window
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CurrentContext.OpenGLWin32.HWnd = videodata.OpenGLWin32.HWnd;
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// get hdc
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if (!(CurrentContext.OpenGLWin32.HDc = GetDC((HWND)videodata.OpenGLWin32.HWnd))) {
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os::Printer::log("Cannot create a GL device context.", ELL_ERROR);
return false;
}
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if (!PrimaryContext.OpenGLWin32.HWnd) {
PrimaryContext.OpenGLWin32.HWnd = CurrentContext.OpenGLWin32.HWnd;
PrimaryContext.OpenGLWin32.HDc = CurrentContext.OpenGLWin32.HDc;
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}
return true;
}
void CWGLManager::terminate()
{
if (CurrentContext.OpenGLWin32.HDc)
ReleaseDC((HWND)CurrentContext.OpenGLWin32.HWnd, (HDC)CurrentContext.OpenGLWin32.HDc);
if (PrimaryContext.OpenGLWin32.HDc && PrimaryContext.OpenGLWin32.HDc == CurrentContext.OpenGLWin32.HDc)
memset(&PrimaryContext, 0, sizeof(PrimaryContext));
memset(&CurrentContext, 0, sizeof(CurrentContext));
if (libHandle)
FreeLibrary(libHandle);
}
bool CWGLManager::generateSurface()
{
HDC HDc = (HDC)CurrentContext.OpenGLWin32.HDc;
// search for pixel format the simple way
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if (PixelFormat == 0 || (!SetPixelFormat(HDc, PixelFormat, &pfd))) {
for (u32 i = 0; i < 5; ++i) {
if (i == 1) {
if (Params.Stencilbuffer) {
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os::Printer::log("Cannot create a GL device with stencil buffer, disabling stencil shadows.", ELL_WARNING);
Params.Stencilbuffer = false;
pfd.cStencilBits = 0;
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} else
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continue;
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} else if (i == 2) {
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pfd.cDepthBits = 24;
}
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if (i == 3) {
if (Params.Bits != 16)
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pfd.cDepthBits = 16;
else
continue;
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} else if (i == 4) {
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os::Printer::log("Cannot create a GL device context", "No suitable format.", ELL_ERROR);
return false;
}
// choose pixelformat
PixelFormat = ChoosePixelFormat(HDc, &pfd);
if (PixelFormat)
break;
}
// set pixel format
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if (!SetPixelFormat(HDc, PixelFormat, &pfd)) {
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os::Printer::log("Cannot set the pixel format.", ELL_ERROR);
return false;
}
}
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if (pfd.cAlphaBits != 0) {
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if (pfd.cRedBits == 8)
ColorFormat = ECF_A8R8G8B8;
else
ColorFormat = ECF_A1R5G5B5;
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} else {
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if (pfd.cRedBits == 8)
ColorFormat = ECF_R8G8B8;
else
ColorFormat = ECF_R5G6B5;
}
os::Printer::log("Pixel Format", core::stringc(PixelFormat).c_str(), ELL_DEBUG);
return true;
}
void CWGLManager::destroySurface()
{
}
bool CWGLManager::generateContext()
{
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HDC HDc = (HDC)CurrentContext.OpenGLWin32.HDc;
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HGLRC hrc;
// create rendering context
#ifdef WGL_ARB_create_context
PFNWGLCREATECONTEXTATTRIBSARBPROC wglCreateContextAttribs_ARB = (PFNWGLCREATECONTEXTATTRIBSARBPROC)FunctionPointers[0];
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if (wglCreateContextAttribs_ARB) {
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// with 3.0 all available profiles should be usable, higher versions impose restrictions
// we need at least 1.1
const int iAttribs[] =
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{
WGL_CONTEXT_MAJOR_VERSION_ARB, 1,
WGL_CONTEXT_MINOR_VERSION_ARB, 1,
// WGL_CONTEXT_FLAGS_ARB, WGL_CONTEXT_DEBUG_BIT_ARB, // enable to get a debug context (depends on driver if that does anything)
0};
hrc = wglCreateContextAttribs_ARB(HDc, 0, iAttribs);
} else
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#endif
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hrc = wglCreateContext(HDc);
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os::Printer::log("Irrlicht context");
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if (!hrc) {
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os::Printer::log("Cannot create a GL rendering context.", ELL_ERROR);
return false;
}
// set exposed data
CurrentContext.OpenGLWin32.HRc = hrc;
if (!PrimaryContext.OpenGLWin32.HRc)
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PrimaryContext.OpenGLWin32.HRc = CurrentContext.OpenGLWin32.HRc;
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return true;
}
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const SExposedVideoData &CWGLManager::getContext() const
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{
return CurrentContext;
}
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bool CWGLManager::activateContext(const SExposedVideoData &videoData, bool restorePrimaryOnZero)
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{
Reformat the code, using: find -type f | # list all regular files grep -E '\.(h|cpp|mm)$' | # filter for source files grep -v '/mt_' | # filter out generated files grep -v '/vendor/' | # and vendored GL grep -v '/test/image_loader_test.cpp' | # and this file (has giant literals arrays) xargs -n 1 -P $(nproc) clang-format -i # reformat everything Co-authored-by: numzero <numzer0@yandex.ru>
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if (videoData.OpenGLWin32.HWnd && videoData.OpenGLWin32.HDc && videoData.OpenGLWin32.HRc) {
if (!wglMakeCurrent((HDC)videoData.OpenGLWin32.HDc, (HGLRC)videoData.OpenGLWin32.HRc)) {
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os::Printer::log("Render Context switch failed.");
return false;
}
Reformat the code, using: find -type f | # list all regular files grep -E '\.(h|cpp|mm)$' | # filter for source files grep -v '/mt_' | # filter out generated files grep -v '/vendor/' | # and vendored GL grep -v '/test/image_loader_test.cpp' | # and this file (has giant literals arrays) xargs -n 1 -P $(nproc) clang-format -i # reformat everything Co-authored-by: numzero <numzer0@yandex.ru>
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CurrentContext = videoData;
} else if (!restorePrimaryOnZero && !videoData.OpenGLWin32.HDc && !videoData.OpenGLWin32.HRc) {
if (!wglMakeCurrent((HDC)0, (HGLRC)0)) {
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os::Printer::log("Render Context reset failed.");
return false;
}
CurrentContext = videoData;
}
// set back to main context
Reformat the code, using: find -type f | # list all regular files grep -E '\.(h|cpp|mm)$' | # filter for source files grep -v '/mt_' | # filter out generated files grep -v '/vendor/' | # and vendored GL grep -v '/test/image_loader_test.cpp' | # and this file (has giant literals arrays) xargs -n 1 -P $(nproc) clang-format -i # reformat everything Co-authored-by: numzero <numzer0@yandex.ru>
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else if (!videoData.OpenGLWin32.HWnd && CurrentContext.OpenGLWin32.HDc != PrimaryContext.OpenGLWin32.HDc) {
if (!wglMakeCurrent((HDC)PrimaryContext.OpenGLWin32.HDc, (HGLRC)PrimaryContext.OpenGLWin32.HRc)) {
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os::Printer::log("Render Context switch (back to main) failed.");
return false;
}
Reformat the code, using: find -type f | # list all regular files grep -E '\.(h|cpp|mm)$' | # filter for source files grep -v '/mt_' | # filter out generated files grep -v '/vendor/' | # and vendored GL grep -v '/test/image_loader_test.cpp' | # and this file (has giant literals arrays) xargs -n 1 -P $(nproc) clang-format -i # reformat everything Co-authored-by: numzero <numzer0@yandex.ru>
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CurrentContext = PrimaryContext;
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}
return true;
}
void CWGLManager::destroyContext()
{
Reformat the code, using: find -type f | # list all regular files grep -E '\.(h|cpp|mm)$' | # filter for source files grep -v '/mt_' | # filter out generated files grep -v '/vendor/' | # and vendored GL grep -v '/test/image_loader_test.cpp' | # and this file (has giant literals arrays) xargs -n 1 -P $(nproc) clang-format -i # reformat everything Co-authored-by: numzero <numzer0@yandex.ru>
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if (CurrentContext.OpenGLWin32.HRc) {
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if (!wglMakeCurrent((HDC)CurrentContext.OpenGLWin32.HDc, 0))
os::Printer::log("Release of render context failed.", ELL_WARNING);
if (!wglDeleteContext((HGLRC)CurrentContext.OpenGLWin32.HRc))
os::Printer::log("Deletion of render context failed.", ELL_WARNING);
Reformat the code, using: find -type f | # list all regular files grep -E '\.(h|cpp|mm)$' | # filter for source files grep -v '/mt_' | # filter out generated files grep -v '/vendor/' | # and vendored GL grep -v '/test/image_loader_test.cpp' | # and this file (has giant literals arrays) xargs -n 1 -P $(nproc) clang-format -i # reformat everything Co-authored-by: numzero <numzer0@yandex.ru>
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if (PrimaryContext.OpenGLWin32.HRc == CurrentContext.OpenGLWin32.HRc)
PrimaryContext.OpenGLWin32.HRc = 0;
CurrentContext.OpenGLWin32.HRc = 0;
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}
}
Reformat the code, using: find -type f | # list all regular files grep -E '\.(h|cpp|mm)$' | # filter for source files grep -v '/mt_' | # filter out generated files grep -v '/vendor/' | # and vendored GL grep -v '/test/image_loader_test.cpp' | # and this file (has giant literals arrays) xargs -n 1 -P $(nproc) clang-format -i # reformat everything Co-authored-by: numzero <numzer0@yandex.ru>
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void *CWGLManager::getProcAddress(const std::string &procName)
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{
Reformat the code, using: find -type f | # list all regular files grep -E '\.(h|cpp|mm)$' | # filter for source files grep -v '/mt_' | # filter out generated files grep -v '/vendor/' | # and vendored GL grep -v '/test/image_loader_test.cpp' | # and this file (has giant literals arrays) xargs -n 1 -P $(nproc) clang-format -i # reformat everything Co-authored-by: numzero <numzer0@yandex.ru>
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void *proc = NULL;
proc = (void *)wglGetProcAddress(procName.c_str());
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if (!proc) { // Fallback
if (!libHandle)
libHandle = LoadLibraryA("opengl32.dll");
if (libHandle)
Reformat the code, using: find -type f | # list all regular files grep -E '\.(h|cpp|mm)$' | # filter for source files grep -v '/mt_' | # filter out generated files grep -v '/vendor/' | # and vendored GL grep -v '/test/image_loader_test.cpp' | # and this file (has giant literals arrays) xargs -n 1 -P $(nproc) clang-format -i # reformat everything Co-authored-by: numzero <numzer0@yandex.ru>
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proc = (void *)GetProcAddress(libHandle, procName.c_str());
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}
return proc;
}
bool CWGLManager::swapBuffers()
{
return SwapBuffers((HDC)CurrentContext.OpenGLWin32.HDc) == TRUE;
}
}
}
Remove more dead code
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#endif
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