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win32-try a different approach to improve new opengl initialization reliability

This commit is contained in:
zeromus 2013-02-06 21:39:38 +00:00
parent 719e1244cc
commit b16f5e8c07
1 changed files with 14 additions and 11 deletions
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25
desmume/src/windows/ogl.cpp
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@ -98,8 +98,8 @@ bool windows_opengl_init()
if(oglAlreadyInit == true) return true;
GLuint PixelFormat;
static PIXELFORMATDESCRIPTOR pfd;
GLuint PixelFormat;
static PIXELFORMATDESCRIPTOR pfd;
memset(&pfd,0, sizeof(PIXELFORMATDESCRIPTOR));
pfd.nSize = sizeof(PIXELFORMATDESCRIPTOR);
pfd.nVersion = 1;
@ -109,18 +109,21 @@ bool windows_opengl_init()
pfd.cDepthBits = 24;
pfd.cAlphaBits = 8;
pfd.cStencilBits = 8;
pfd.iLayerType = PFD_MAIN_PLANE ;
main_hDC = GetDC(NULL);
PixelFormat = ChoosePixelFormat(main_hDC, &pfd);
SetPixelFormat(main_hDC, PixelFormat, &pfd);
main_hRC = wglCreateContext(main_hDC);
wglMakeCurrent(main_hDC, main_hRC);
pfd.iLayerType = PFD_MAIN_PLANE;
HWND fakeWindow = CreateWindow("EDIT", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
main_hDC = GetDC(fakeWindow);
PixelFormat = ChoosePixelFormat(main_hDC, &pfd);
SetPixelFormat(main_hDC, PixelFormat, &pfd);
main_hRC = wglCreateContext(main_hDC);
wglMakeCurrent(main_hDC, main_hRC);
int res = CheckHardwareSupport(main_hDC);
if (res>=0&&res<=2)
INFO("WGL OpenGL mode: %s\n",opengl_modes[res]);
else
INFO("WGL OpenGL mode: uknown\n");
INFO("WGL OpenGL mode: %s\n",opengl_modes[res]);
else
INFO("WGL OpenGL mode: uknown\n");
oglAlreadyInit = true;