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[693/906] x11_glx: ask for a 3.0 GL Context

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(falling back if needed)
This commit is contained in:
Matthew Waters 2013-06-04 22:16:00 +10:00 committed by Tim-Philipp Müller
parent 957b4cf08b
commit 696477bbf6
1 changed files with 101 additions and 11 deletions
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112
gst-libs/gst/gl/x11/gstglwindow_x11_glx.c
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@ -27,6 +27,7 @@
#include <gst/gst.h>
#include <gstglfeature.h>
#include "gstglwindow_x11_glx.h"
#define GST_CAT_DEFAULT gst_gl_window_debug
@ -56,6 +57,12 @@ struct _GstGLWindowX11GLXPrivate
{
int glx_major;
int glx_minor;
GstGLAPI context_api;
GLXFBConfig *fbconfigs;
GLXContext (*glXCreateContextAttribsARB) (Display *, GLXFBConfig,
GLXContext, Bool, const int *);
};
static void
@ -100,21 +107,101 @@ gst_gl_window_x11_glx_new (void)
return window;
}
static inline void
_describe_fbconfig (Display * display, GLXFBConfig config)
{
int val;
glXGetFBConfigAttrib (display, config, GLX_FBCONFIG_ID, &val);
GST_DEBUG ("ID: %d", val);
glXGetFBConfigAttrib (display, config, GLX_DOUBLEBUFFER, &val);
GST_DEBUG ("double buffering: %d", val);
glXGetFBConfigAttrib (display, config, GLX_RED_SIZE, &val);
GST_DEBUG ("red: %d", val);
glXGetFBConfigAttrib (display, config, GLX_GREEN_SIZE, &val);
GST_DEBUG ("green: %d", val);
glXGetFBConfigAttrib (display, config, GLX_BLUE_SIZE, &val);
GST_DEBUG ("blue: %d", val);
glXGetFBConfigAttrib (display, config, GLX_ALPHA_SIZE, &val);
GST_DEBUG ("alpha: %d", val);
glXGetFBConfigAttrib (display, config, GLX_DEPTH_SIZE, &val);
GST_DEBUG ("depth: %d", val);
glXGetFBConfigAttrib (display, config, GLX_STENCIL_SIZE, &val);
GST_DEBUG ("stencil: %d", val);
}
static gboolean
gst_gl_window_x11_glx_create_context (GstGLWindowX11 * window_x11,
GstGLAPI gl_api, guintptr external_gl_context, GError ** error)
{
GstGLWindowX11GLX *window_glx;
gboolean create_context;
const char *glx_exts;
int x_error;
window_glx = GST_GL_WINDOW_X11_GLX (window_x11);
window_glx->glx_context =
glXCreateContext (window_x11->device, window_x11->visual_info,
(GLXContext) external_gl_context, TRUE);
glx_exts =
glXQueryExtensionsString (window_x11->device,
DefaultScreen (window_x11->device));
create_context = gst_gl_check_extension ("GLX_ARB_create_context", glx_exts);
window_glx->priv->glXCreateContextAttribsARB =
(gpointer) glXGetProcAddressARB ((const GLubyte *)
"glXCreateContextAttribsARB");
if (create_context && window_glx->priv->glXCreateContextAttribsARB) {
int context_attribs_3[] = {
GLX_CONTEXT_MAJOR_VERSION_ARB, 3,
GLX_CONTEXT_MINOR_VERSION_ARB, 0,
//GLX_CONTEXT_FLAGS_ARB , GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB,
None
};
int context_attribs_pre_3[] = {
GLX_CONTEXT_MAJOR_VERSION_ARB, 1,
GLX_CONTEXT_MINOR_VERSION_ARB, 4,
None
};
gst_gl_window_x11_trap_x_errors ();
window_glx->glx_context =
window_glx->priv->glXCreateContextAttribsARB (window_x11->device,
window_glx->priv->fbconfigs[0], (GLXContext) external_gl_context, True,
context_attribs_3);
x_error = gst_gl_window_x11_untrap_x_errors ();
window_glx->priv->context_api = GST_GL_API_OPENGL3 | GST_GL_API_OPENGL;
if (!window_glx->glx_context || x_error != 0) {
GST_DEBUG ("Failed to create an Opengl 3 context. trying a legacy one");
gst_gl_window_x11_trap_x_errors ();
window_glx->glx_context =
window_glx->priv->glXCreateContextAttribsARB (window_x11->device,
window_glx->priv->fbconfigs[0], (GLXContext) external_gl_context,
True, context_attribs_pre_3);
x_error = gst_gl_window_x11_untrap_x_errors ();
if (x_error != 0)
window_glx->glx_context = NULL;
window_glx->priv->context_api = GST_GL_API_OPENGL;
}
} else {
window_glx->glx_context =
glXCreateContext (window_x11->device, window_x11->visual_info,
(GLXContext) external_gl_context, TRUE);
window_glx->priv->context_api = GST_GL_API_OPENGL;
}
if (window_glx->priv->fbconfigs)
XFree (window_glx->priv->fbconfigs);
if (!window_glx->glx_context) {
g_set_error (error, GST_GL_WINDOW_ERROR, GST_GL_WINDOW_ERROR_CREATE_CONTEXT,
"Failed to create opengl context (glXCreateContext failed)");
"Failed to create opengl context");
goto failure;
}
@ -195,22 +282,21 @@ gst_gl_window_x11_glx_choose_format (GstGLWindowX11 * window_x11,
GLX_DOUBLEBUFFER, True,
None
};
int fbcount;
GLXFBConfig *fbconfigs = glXChooseFBConfig (window_x11->device,
window_glx->priv->fbconfigs = glXChooseFBConfig (window_x11->device,
DefaultScreen (window_x11->device), attribs, &fbcount);
if (!fbconfigs) {
if (!window_glx->priv->fbconfigs) {
g_set_error (error, GST_GL_WINDOW_ERROR, GST_GL_WINDOW_ERROR_WRONG_CONFIG,
"Could not find any FBConfig's to use (check attributes?)");
goto failure;
}
window_x11->visual_info = glXGetVisualFromFBConfig (window_x11->device,
fbconfigs[0]);
_describe_fbconfig (window_x11->device, window_glx->priv->fbconfigs[0]);
XFree (fbconfigs);
window_x11->visual_info = glXGetVisualFromFBConfig (window_x11->device,
window_glx->priv->fbconfigs[0]);
if (!window_x11->visual_info) {
g_set_error (error, GST_GL_WINDOW_ERROR, GST_GL_WINDOW_ERROR_WRONG_CONFIG,
@ -255,7 +341,11 @@ gst_gl_window_x11_glx_activate (GstGLWindowX11 * window_x11, gboolean activate)
GstGLAPI
gst_gl_window_x11_glx_get_gl_api (GstGLWindow * window)
{
return GST_GL_API_OPENGL;
GstGLWindowX11GLX *window_glx;
window_glx = GST_GL_WINDOW_X11_GLX (window);
return window_glx->priv->context_api;
}
static gpointer