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progs/wgl: Create GL context in a thread that actually uses it.

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This commit is contained in:
Michal Krol
2009-03-20 16:16:12 +01:00
parent e8aa5a1018
commit 9bbffcced4
1 changed files with 35 additions and 30 deletions
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progs/wgl/sharedtex_mt/sharedtex_mt.c
+35 -30
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@@ -49,6 +49,7 @@ struct window {
HGLRC Context;
float Angle;
int Id;
HGLRC sharedContext;
};
@@ -172,8 +173,6 @@ AddWindow(int xpos, int ypos, HGLRC sCtx)
{
struct window *win = &Windows[NumWindows];
WNDCLASS wc = {0};
PIXELFORMATDESCRIPTOR pfd = {0};
int visinfo;
int width = 300, height = 300;
if (NumWindows >= MAX_WINDOWS)
@@ -208,33 +207,7 @@ AddWindow(int xpos, int ypos, HGLRC sCtx)
Error("Couldn't create window");
}
win->hDC = GetDC(win->Win);
if (!win->hDC) {
Error("Couldn't obtain HDC");
}
pfd.cColorBits = 24;
pfd.cDepthBits = 24;
pfd.dwFlags = PFD_DOUBLEBUFFER | PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL;
pfd.iLayerType = PFD_MAIN_PLANE;
pfd.iPixelType = PFD_TYPE_RGBA;
pfd.nSize = sizeof(pfd);
pfd.nVersion = 1;
visinfo = ChoosePixelFormat(win->hDC, &pfd);
if (!visinfo) {
Error("Unable to find RGB, Z, double-buffered visual");
}
SetPixelFormat(win->hDC, visinfo, &pfd);
win->Context = wglCreateContext(win->hDC);
if (!win->Context) {
Error("Couldn't create WGL context");
}
if (sCtx) {
wglShareLists(sCtx, win->Context);
}
win->sharedContext = sCtx;
ShowWindow(win->Win, SW_SHOW);
@@ -244,7 +217,6 @@ AddWindow(int xpos, int ypos, HGLRC sCtx)
static void
InitGLstuff(void)
{
glGenTextures(3, Textures);
@@ -432,9 +404,39 @@ threadRunner (void *arg)
{
struct thread_init_arg *tia = (struct thread_init_arg *) arg;
struct window *win;
PIXELFORMATDESCRIPTOR pfd = {0};
int visinfo;
win = &Windows[tia->id];
win->hDC = GetDC(win->Win);
if (!win->hDC) {
Error("Couldn't obtain HDC");
}
pfd.cColorBits = 24;
pfd.cDepthBits = 24;
pfd.dwFlags = PFD_DOUBLEBUFFER | PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL;
pfd.iLayerType = PFD_MAIN_PLANE;
pfd.iPixelType = PFD_TYPE_RGBA;
pfd.nSize = sizeof(pfd);
pfd.nVersion = 1;
visinfo = ChoosePixelFormat(win->hDC, &pfd);
if (!visinfo) {
Error("Unable to find RGB, Z, double-buffered visual");
}
SetPixelFormat(win->hDC, visinfo, &pfd);
win->Context = wglCreateContext(win->hDC);
if (!win->Context) {
Error("Couldn't create WGL context");
}
if (win->sharedContext) {
wglShareLists(win->sharedContext, win->Context);
}
while (1) {
MSG msg;
@@ -464,6 +466,9 @@ threadRunner (void *arg)
static void
Resize(struct window *h, unsigned int width, unsigned int height)
{
if (!h->Context)
return;
EnterCriticalSection(&h->drawMutex);
if (!wglMakeCurrent(h->hDC, h->Context)) {