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[test/surface-source] Modify to trigger a crash.

Browse source 
Whilst investigating:
  Bug 7360 painting huge surfaces fails
  https://bugs.freedesktop.org/show_bug.cgi?id=7360
I found a particular combination of operations that cause a crash within
xlib, so I'm committing the test for posterity.
This commit is contained in:
Chris Wilson 2008-09-29 13:54:12 +01:00
parent 3b33d49d37
commit c23dbc4c61
1 changed files with 37 additions and 11 deletions
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48
test/surface-source.c
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@ -28,19 +28,28 @@
static cairo_test_draw_function_t draw;
static cairo_surface_t *create_source_surface (int size);
#define SIZE 90
/* We use a relatively large source to exercise bug:
* Bug 7360 painting huge surfaces fails
* [https://bugs.freedesktop.org/show_bug.cgi?id=7360]
* but still keep the resultant image small for reasonably quick checking.
*/
#define SOURCE_SIZE 2000
#define INTER_SIZE 512
static const cairo_test_t test = {
NAME "-surface-source",
"Test using various surfaces as the source",
SIZE, SIZE,
90, 90,
draw
};
static void
draw_pattern (cairo_surface_t *surface, int surface_size)
draw_pattern (cairo_surface_t **surface_inout, int surface_size)
{
cairo_t *cr = cairo_create (surface);
cairo_t *cr;
cr = cairo_create (*surface_inout);
cairo_surface_destroy (*surface_inout);
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_rectangle (cr,
@ -63,6 +72,7 @@ draw_pattern (cairo_surface_t *surface, int surface_size)
surface_size / 2, surface_size / 2);
cairo_fill (cr);
*surface_inout = cairo_surface_reference (cairo_get_target (cr));
cairo_destroy (cr);
}
@ -70,21 +80,37 @@ static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
cairo_surface_t *surface;
int surface_size;
cairo_surface_t *similar;
cairo_t *cr2;
cairo_set_source_rgb (cr, 0, 0, 0);
cairo_paint (cr);
surface_size = SIZE - 30;
surface = create_source_surface (surface_size);
surface = create_source_surface (SOURCE_SIZE);
if (surface == NULL) /* can't create the source so skip the test */
return CAIRO_TEST_UNTESTED;
draw_pattern (surface, surface_size);
draw_pattern (&surface, SOURCE_SIZE);
cairo_set_source_surface (cr, surface, 15, 15);
/* copy a subregion to a smaller intermediate surface */
similar = cairo_surface_create_similar (surface,
CAIRO_CONTENT_COLOR_ALPHA,
INTER_SIZE, INTER_SIZE);
cr2 = cairo_create (similar);
cairo_surface_destroy (similar);
cairo_set_source_surface (cr2, surface,
(INTER_SIZE - SOURCE_SIZE)/2,
(INTER_SIZE - SOURCE_SIZE)/2);
cairo_surface_destroy (surface);
cairo_paint (cr);
cairo_paint (cr2);
/* and then paint onto a small surface for checking */
cairo_set_source_surface (cr, cairo_get_target (cr2),
(width - INTER_SIZE)/2,
(height - INTER_SIZE)/2);
cairo_destroy (cr2);
cairo_rectangle (cr, 15, 15, 60, 60);
cairo_fill (cr);
return CAIRO_TEST_SUCCESS;
}
@ -94,7 +120,7 @@ main (void)
{
cairo_surface_t *surface;
surface = create_source_surface (SIZE);
surface = create_source_surface (SOURCE_SIZE);
if (surface == NULL) /* can't create the source so skip the test */
return CAIRO_TEST_UNTESTED;