perf: Make cairo_t* available to perf functions

perf/README

@@ -40,29 +40,28 @@ Here is the basic structure of a performance test file:
 
     static cairo_perf_ticks_t
     do_my_new_test (cairo_t *cr, int width, int height)
+    {
+	cairo_perf_timer_start ();
+
+	/* Make the cairo calls to be measured */
+
+	cairo_perf_timer_stop ();
+
+	return cairo_perf_timer_elapsed ();
+    }
+
+    void
+    my_new_test (cairo_perf_t *perf, cairo_t *cr, int width, int height)
     {
 	/* First do any setup for which the execution time should not
 	 * be measured. For example, this might include loading
 	 * images from disk, creating patterns, etc. */
 
-	cairo_perf_timer_start ();
-
-	/* Now make the real cairo calls to be measured */
-
-	cairo_perf_timer_stop ();
-
-	/* Finally, any cleanup */
-
-	/* Then return the time that elapsed. */
-
-	return cairo_perf_timer_elapsed ();
-     }
-
-     void
-     my_new_test (cairo_perf_t *perf)
-     {
+	/* Then launch the actual performance testing. */
 	cairo_perf_run (perf, "my_new_test", do_my_new_test);
-     }
+
+	/* Finally, perform any cleanup from the setup above. */
+    }
 
 That's really all there is to writing a new test. The first function
 above is the one that does the real work and returns a timing

perf/cairo-perf.c

@@ -223,7 +223,7 @@ main (int argc, char *argv[])
 					       target->closure);
 
 		perf.cr = cairo_create (surface);
-		perf_case->run (&perf);
+		perf_case->run (&perf, perf.cr, perf.size, perf.size);
 
 		cairo_surface_destroy (surface);
 	    }

perf/cairo-perf.h

@@ -69,7 +69,7 @@ cairo_perf_run (cairo_perf_t		*perf,
 		const char		*name,
 		cairo_perf_func_t	 perf_func);
 
-#define CAIRO_PERF_DECL(func) void (func) (cairo_perf_t *perf);
+#define CAIRO_PERF_DECL(func) void (func) (cairo_perf_t *perf, cairo_t *cr, int width, int height);
 
 /* paint.c */
 CAIRO_PERF_DECL (paint);

perf/paint.c

@@ -168,7 +168,7 @@ paint_source_surface_argb32 (cairo_t *cr, int width, int height)
 }
 
 void
-paint (cairo_perf_t *perf)
+paint (cairo_perf_t *perf, cairo_t *cr, int width, int height)
 {
     cairo_perf_run (perf, "paint_over_solid", paint_over_solid);
     cairo_perf_run (perf, "paint_over_solid_alpha", paint_over_solid_alpha);

perf/tessellate.c

@@ -141,7 +141,7 @@ tessellate_256 (cairo_t *cr, int width, int height)
 }
 
 void
-tessellate (cairo_perf_t *perf)
+tessellate (cairo_perf_t *perf, cairo_t *cr, int width, int height)
 {
     cairo_perf_run (perf, "tessellate-16", tessellate_16);
     cairo_perf_run (perf, "tessellate-64", tessellate_64);