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further fixes to two-step context creation

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This commit is contained in:
David Rose 2010-03-13 18:28:52 +00:00
parent d199a95664
commit b89595c845
2 changed files with 30 additions and 3 deletions
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32
panda/src/glxdisplay/glxGraphicsStateGuardian.cxx
View File

@ -57,6 +57,7 @@ glxGraphicsStateGuardian(GraphicsEngine *engine, GraphicsPipe *pipe,
_checked_get_proc_address = false;
_glXGetProcAddress = NULL;
_temp_xwindow = (Window)NULL;
_temp_colormap = (Colormap)NULL;
}
////////////////////////////////////////////////////////////////////
@ -235,7 +236,11 @@ choose_pixel_format(const FrameBufferProperties &properties,
_context = 0;
_fbconfig = 0;
_visual = 0;
_visuals = 0;
if (_visuals != (XVisualInfo *)NULL) {
XFree(_visuals);
_visuals = NULL;
}
_fbprops.clear();
// First, attempt to create a context using the XVisual interface.
@ -343,6 +348,10 @@ choose_pixel_format(const FrameBufferProperties &properties,
_glXCreateNewContext(_display, _fbconfig, GLX_RGBA_TYPE, _share_context,
GL_TRUE);
if (_context) {
if (_visuals != (XVisualInfo *)NULL) {
XFree(_visuals);
_visuals = NULL;
}
_visuals = _glXGetVisualFromFBConfig(_display, _fbconfig);
_visual = _visuals;
@ -761,6 +770,10 @@ choose_visual(const FrameBufferProperties &properties) {
FrameBufferProperties best_props;
// Scan available visuals.
if (_visuals != (XVisualInfo *)NULL) {
XFree(_visuals);
_visuals = NULL;
}
int nvisuals = 0;
_visuals = XGetVisualInfo(_display, 0, 0, &nvisuals);
if (_visuals != 0) {
@ -804,10 +817,19 @@ init_temp_context() {
destroy_temp_xwindow();
// Assume everyone uses TrueColor or DirectColor these days.
Visual *visual = _visual->visual;
nassertv(visual->c_class == DirectColor || visual->c_class == TrueColor);
_temp_colormap = XCreateColormap(_display, root_window,
visual, AllocNone);
XSetWindowAttributes wa;
wa.colormap = _temp_colormap;
unsigned long attrib_mask = CWColormap;
_temp_xwindow = XCreateWindow
(_display, root_window, 0, 0, 1, 1,
(_display, root_window, 0, 0, 100, 100,
0, _visual->depth, InputOutput,
_visual->visual, 0, NULL);
visual, attrib_mask, &wa);
if (_temp_xwindow == (Window)NULL) {
glxdisplay_cat.error()
<< "Could not create temporary window for context\n";
@ -830,4 +852,8 @@ destroy_temp_xwindow() {
XDestroyWindow(_display, _temp_xwindow);
_temp_xwindow = (Window)NULL;
}
if (_temp_colormap != (Colormap)NULL) {
XFreeColormap(_display, _temp_colormap);
_temp_colormap = (Colormap)NULL;
}
}

1
panda/src/glxdisplay/glxGraphicsStateGuardian.h
View File

@ -143,6 +143,7 @@ private:
bool _checked_get_proc_address;
PFNGLXGETPROCADDRESSPROC _glXGetProcAddress;
Window _temp_xwindow;
Colormap _temp_colormap;
public:
static TypeHandle get_class_type() {