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glcontext/cocoa: implement GL3 core context selection

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This commit is contained in:
Matthew Waters 2015-01-22 18:00:36 +11:00
parent 904cdf3f58
commit 1e9c30223e
2 changed files with 57 additions and 5 deletions
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2
gst-libs/gst/gl/cocoa/gstgl_cocoa_private.h
View file

@ -38,6 +38,8 @@ struct _GstGLContextCocoaPrivate
CGLContextObj external_gl_context;
GstGLAPI context_api;
gint source_id;
};

60
gst-libs/gst/gl/cocoa/gstglcontext_cocoa.m
View file

@ -165,6 +165,7 @@ gst_gl_context_cocoa_create_context (GstGLContext *context, GstGLAPI gl_api,
GstGLContextCocoaPrivate *priv = context_cocoa->priv;
GstGLWindow *window = gst_gl_context_get_window (context);
GstGLWindowCocoa *window_cocoa = GST_GL_WINDOW_COCOA (window);
GstGLAPI context_api = GST_GL_API_NONE;
const GLint swapInterval = 1;
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
CGLPixelFormatObj fmt = NULL;
@ -175,8 +176,16 @@ gst_gl_context_cocoa_create_context (GstGLContext *context, GstGLAPI gl_api,
0
};
CGLError ret;
gint pix_fmt_i = 0;
gint npix;
if ((gl_api & (GST_GL_API_OPENGL | GST_GL_API_OPENGL3)) == GST_GL_API_NONE) {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_CREATE_CONTEXT,
"The CGL backend only supports GL and GL3");
goto error;
}
priv->gl_context = nil;
if (other_context)
priv->external_gl_context = (CGLContextObj) gst_gl_context_get_gl_context (other_context);
@ -184,10 +193,40 @@ gst_gl_context_cocoa_create_context (GstGLContext *context, GstGLAPI gl_api,
priv->external_gl_context = NULL;
if (priv->external_gl_context) {
gint profile;
fmt = CGLGetPixelFormat (priv->external_gl_context);
#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1070
/* core profile is only available in >= 10.7 */
if (kCGLNoError == CGLDescribePixelFormat (fmt, 0, kCGLPFAOpenGLProfile,
&profile)) {
if (profile == kCGLOGLPVersion_3_2_Core) {
context_api = GST_GL_API_OPENGL3;
} else {
context_api =GST_GL_API_OPENGL;
}
}
#else
context_api = GST_GL_API_OPENGL;
#endif
}
if (!fmt) {
#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1070
if (gl_api & GST_GL_API_OPENGL3) {
attribs[pix_fmt_i++] = kCGLPFAOpenGLProfile;
attribs[pix_fmt_i++] = (int) kCGLOGLPVersion_3_2_Core;
context_api = GST_GL_API_OPENGL3;
} else {
context_api = GST_GL_API_OPENGL;
}
#else
context_api = GST_GL_API_OPENGL;
#endif
attribs[pix_fmt_i++] = 0;
ret = CGLChoosePixelFormat (attribs, &fmt, &npix);
if (ret != kCGLNoError) {
g_set_error (error, GST_GL_CONTEXT_ERROR,
@ -224,15 +263,21 @@ gst_gl_context_cocoa_create_context (GstGLContext *context, GstGLAPI gl_api,
*/
CGLSetParameter (context_cocoa->priv->gl_context, kCGLCPSwapInterval, &swapInterval);
gst_object_unref (window);
context_cocoa->priv->context_api = context_api;
if (window)
gst_object_unref (window);
[pool release];
return TRUE;
error:
gst_object_unref (window);
[pool release];
return FALSE;
{
if (window)
gst_object_unref (window);
[pool release];
return FALSE;
}
}
static void
@ -259,7 +304,12 @@ gst_gl_context_cocoa_activate (GstGLContext * context, gboolean activate)
static GstGLAPI
gst_gl_context_cocoa_get_gl_api (GstGLContext * context)
{
return GST_GL_API_OPENGL;
GstGLContextCocoa *context_cocoa = GST_GL_CONTEXT_COCOA (context);
if (context_cocoa->priv->gl_context)
return context_cocoa->priv->context_api;
return GST_GL_API_OPENGL | GST_GL_API_OPENGL3;
}
static GstGLPlatform