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-rw-r--r--gst-libs/gst/vaapi/gstvaapiutils_glx.c40
1 files changed, 38 insertions, 2 deletions
diff --git a/gst-libs/gst/vaapi/gstvaapiutils_glx.c b/gst-libs/gst/vaapi/gstvaapiutils_glx.c
index ccd7832b..f73106c2 100644
--- a/gst-libs/gst/vaapi/gstvaapiutils_glx.c
+++ b/gst-libs/gst/vaapi/gstvaapiutils_glx.c
@@ -301,9 +301,17 @@ gl_create_context (Display * dpy, int screen, GLContextState * parent)
GLX_RED_SIZE, 8,
GLX_GREEN_SIZE, 8,
GLX_BLUE_SIZE, 8,
+ GLX_ALPHA_SIZE, 8,
None
};
+ const GLint rgba_colors[4] = {
+ GLX_RED_SIZE,
+ GLX_GREEN_SIZE,
+ GLX_BLUE_SIZE,
+ GLX_ALPHA_SIZE
+ };
+
cs = malloc (sizeof (*cs));
if (!cs)
goto error;
@@ -333,11 +341,38 @@ gl_create_context (Display * dpy, int screen, GLContextState * parent)
if (!fbconfigs)
goto error;
- /* Find out a GLXFBConfig compatible with the parent context */
+ /* Find out a 8 bit GLXFBConfig compatible with the parent context */
for (n = 0; n < n_fbconfigs; n++) {
+ gboolean sizes_correct = FALSE;
+ int cn;
+
status = glXGetFBConfigAttrib (parent->display,
fbconfigs[n], GLX_FBCONFIG_ID, &val);
- if (status == Success && val == fbconfig_id)
+ if (status != Success)
+ goto error;
+ if (val != fbconfig_id)
+ continue;
+
+ /* Iterate over RGBA sizes in fbconfig */
+ for (cn = 0; cn < 4; cn++) {
+ int size = 0;
+
+ status = glXGetFBConfigAttrib (parent->display,
+ fbconfigs[n], rgba_colors[cn], &size);
+ if (status != Success)
+ goto error;
+
+ /* Last check is for alpha
+ * and alpha is optional */
+ if (cn == 3) {
+ if (size == 0 || size == 8) {
+ sizes_correct = TRUE;
+ break;
+ }
+ } else if (size != 8)
+ break;
+ }
+ if (sizes_correct)
break;
}
if (n == n_fbconfigs)
@@ -809,6 +844,7 @@ gl_create_pixmap_object (Display * dpy, guint width, guint height)
GLX_RED_SIZE, 8,
GLX_GREEN_SIZE, 8,
GLX_BLUE_SIZE, 8,
+ GLX_ALPHA_SIZE, 8,
GL_NONE,
};