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[gl] Make sure test visuals for CAIRO_CONTENT_COLOR_ALPHA have alpha bits.

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Since we're just making FBOs, the visual chosen probably shouldn't matter,
and it doesn't on Intel.  But it does seem like the right thing to do.
This commit is contained in:
Eric Anholt 2009-03-28 21:30:13 -07:00
parent 93c437d4b9
commit 809f7dc4c8
1 changed files with 18 additions and 7 deletions
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25
boilerplate/cairo-boilerplate-gl.c
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@ -66,12 +66,19 @@ _cairo_boilerplate_gl_create_surface (const char *name,
int id,
void **closure)
{
int attribs[] = { GLX_RGBA,
GLX_RED_SIZE, 1,
GLX_GREEN_SIZE, 1,
GLX_BLUE_SIZE, 1,
GLX_DOUBLEBUFFER,
None };
int rgba_attribs[] = { GLX_RGBA,
GLX_RED_SIZE, 1,
GLX_GREEN_SIZE, 1,
GLX_BLUE_SIZE, 1,
GLX_ALPHA_SIZE, 1,
GLX_DOUBLEBUFFER,
None };
int rgb_attribs[] = { GLX_RGBA,
GLX_RED_SIZE, 1,
GLX_GREEN_SIZE, 1,
GLX_BLUE_SIZE, 1,
GLX_DOUBLEBUFFER,
None };
XVisualInfo *visinfo;
GLXContext gl_ctx;
gl_target_closure_t *gltc;
@ -96,7 +103,11 @@ _cairo_boilerplate_gl_create_surface (const char *name,
if (mode == CAIRO_BOILERPLATE_MODE_TEST)
XSynchronize (gltc->dpy, 1);
visinfo = glXChooseVisual (dpy, DefaultScreen (dpy), attribs);
if (content == CAIRO_CONTENT_COLOR)
visinfo = glXChooseVisual (dpy, DefaultScreen (dpy), rgb_attribs);
else
visinfo = glXChooseVisual (dpy, DefaultScreen (dpy), rgba_attribs);
if (visinfo == NULL) {
fprintf (stderr, "Failed to create RGB, double-buffered visual\n");
XCloseDisplay (dpy);