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gl: use wglCreateContextAttribsARB to create share context

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=726494
This commit is contained in:
Wang Xin-yu (王昕宇) 2014-03-18 09:16:25 +08:00 committed by Tim-Philipp Müller
parent d3a823c459
commit 369bee2031
1 changed files with 28 additions and 6 deletions
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32
gst-libs/gst/gl/win32/gstglcontext_wgl.c
View file

@ -29,6 +29,7 @@
#include <gst/gl/gstglcontext.h>
#include "gstglcontext_wgl.h"
#include <gl/wglext.h>
#define gst_gl_context_wgl_parent_class parent_class
G_DEFINE_TYPE (GstGLContextWGL, gst_gl_context_wgl, GST_GL_TYPE_CONTEXT);
@ -93,6 +94,7 @@ gst_gl_context_wgl_create_context (GstGLContext * context,
GstGLWindow *window;
GstGLContextWGL *context_wgl;
HGLRC external_gl_context = NULL;
PFNWGLCREATECONTEXTATTRIBSARBPROC wglCreateContextAttribsARB = NULL;
HDC device;
context_wgl = GST_GL_CONTEXT_WGL (context);
@ -100,7 +102,7 @@ gst_gl_context_wgl_create_context (GstGLContext * context,
device = (HDC) gst_gl_window_get_display (window);
if (other_context) {
if (!GST_GL_IS_CONTEXT_WGL (other_context)) {
if (gst_gl_context_get_gl_platform (other_context) != GST_GL_PLATFORM_WGL) {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_WRONG_CONFIG,
"Cannot share context with a non-WGL context");
@ -121,18 +123,38 @@ gst_gl_context_wgl_create_context (GstGLContext * context,
}
g_assert (context_wgl->wgl_context);
GST_LOG ("gl context id: %" G_GUINTPTR_FORMAT,
(guintptr) context_wgl->wgl_context);
if (external_gl_context) {
if (!wglShareLists (external_gl_context, context_wgl->wgl_context)) {
wglMakeCurrent (device, context_wgl->wgl_context);
wglCreateContextAttribsARB = (PFNWGLCREATECONTEXTATTRIBSARBPROC)
wglGetProcAddress ("wglCreateContextAttribsARB");
if (wglCreateContextAttribsARB != NULL) {
wglMakeCurrent (device, 0);
wglDeleteContext (context_wgl->wgl_context);
context_wgl->wgl_context =
wglCreateContextAttribsARB (device, external_gl_context, 0);
if (context_wgl->wgl_context == NULL) {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_CREATE_CONTEXT, "failed to share contexts 0x%x",
GST_GL_CONTEXT_ERROR_CREATE_CONTEXT,
"failed to share context through wglCreateContextAttribsARB 0x%x",
(unsigned int) GetLastError ());
goto failure;
}
} else if (!wglShareLists (external_gl_context, context_wgl->wgl_context)){
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_CREATE_CONTEXT,
"failed to share contexts through wglShareLists 0x%x",
(unsigned int) GetLastError ());
goto failure;
}
}
GST_LOG ("gl context id: %" G_GUINTPTR_FORMAT,
(guintptr) context_wgl->wgl_context);
gst_object_unref (window);
return TRUE;