Add combiner test

4 files changed, 167 insertions, 0 deletions

diff --git a/pixman/pixman-private.h b/pixman/pixman-private.h
index 042a73f1..492c5844 100644
--- a/pixman/pixman-private.h
+++ b/pixman/pixman-private.h
@@ -764,6 +764,12 @@ get_implementation (void)
     return global_implementation;
 }
 
+/* This function is exported for the sake of the test suite and not part
+ * of the ABI.
+ */
+PIXMAN_EXPORT pixman_implementation_t *
+_pixman_internal_only_get_implementation (void);
+
 /* Memory allocation helpers */
 void *
 pixman_malloc_ab (unsigned int n, unsigned int b);
diff --git a/pixman/pixman-utils.c b/pixman/pixman-utils.c
index 840a0098..fa1e1694 100644
--- a/pixman/pixman-utils.c
+++ b/pixman/pixman-utils.c
@@ -250,6 +250,15 @@ pixman_region32_copy_from_region16 (pixman_region32_t *dst,
     return retval;
 }
 
+/* This function is exported for the sake of the test suite and not part
+ * of the ABI.
+ */
+PIXMAN_EXPORT pixman_implementation_t *
+_pixman_internal_only_get_implementation (void)
+{
+    return get_implementation ();
+}
+
 #ifdef DEBUG
 
 void
diff --git a/test/Makefile.sources b/test/Makefile.sources
index 3e37e320..279cae27 100644
--- a/test/Makefile.sources
+++ b/test/Makefile.sources
@@ -4,6 +4,7 @@ TESTPROGRAMS =			\
 	pdf-op-test		\
 	region-test		\
 	region-translate-test	\
+	combiner-test		\
 	fetch-test		\
 	rotate-test		\
 	oob-test		\
diff --git a/test/combiner-test.c b/test/combiner-test.c
new file mode 100644
index 00000000..5738c65f
--- /dev/null
+++ b/test/combiner-test.c
@@ -0,0 +1,151 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "utils.h"
+#include <sys/types.h>
+#include "pixman-private.h"
+
+static const pixman_op_t op_list[] =
+{
+    PIXMAN_OP_SRC,
+    PIXMAN_OP_OVER,
+    PIXMAN_OP_ADD,
+    PIXMAN_OP_CLEAR,
+    PIXMAN_OP_SRC,
+    PIXMAN_OP_DST,
+    PIXMAN_OP_OVER,
+    PIXMAN_OP_OVER_REVERSE,
+    PIXMAN_OP_IN,
+    PIXMAN_OP_IN_REVERSE,
+    PIXMAN_OP_OUT,
+    PIXMAN_OP_OUT_REVERSE,
+    PIXMAN_OP_ATOP,
+    PIXMAN_OP_ATOP_REVERSE,
+    PIXMAN_OP_XOR,
+    PIXMAN_OP_ADD,
+    PIXMAN_OP_SATURATE,
+    PIXMAN_OP_DISJOINT_CLEAR,
+    PIXMAN_OP_DISJOINT_SRC,
+    PIXMAN_OP_DISJOINT_DST,
+    PIXMAN_OP_DISJOINT_OVER,
+    PIXMAN_OP_DISJOINT_OVER_REVERSE,
+    PIXMAN_OP_DISJOINT_IN,
+    PIXMAN_OP_DISJOINT_IN_REVERSE,
+    PIXMAN_OP_DISJOINT_OUT,
+    PIXMAN_OP_DISJOINT_OUT_REVERSE,
+    PIXMAN_OP_DISJOINT_ATOP,
+    PIXMAN_OP_DISJOINT_ATOP_REVERSE,
+    PIXMAN_OP_DISJOINT_XOR,
+    PIXMAN_OP_CONJOINT_CLEAR,
+    PIXMAN_OP_CONJOINT_SRC,
+    PIXMAN_OP_CONJOINT_DST,
+    PIXMAN_OP_CONJOINT_OVER,
+    PIXMAN_OP_CONJOINT_OVER_REVERSE,
+    PIXMAN_OP_CONJOINT_IN,
+    PIXMAN_OP_CONJOINT_IN_REVERSE,
+    PIXMAN_OP_CONJOINT_OUT,
+    PIXMAN_OP_CONJOINT_OUT_REVERSE,
+    PIXMAN_OP_CONJOINT_ATOP,
+    PIXMAN_OP_CONJOINT_ATOP_REVERSE,
+    PIXMAN_OP_CONJOINT_XOR,
+    PIXMAN_OP_MULTIPLY,
+    PIXMAN_OP_SCREEN,
+    PIXMAN_OP_OVERLAY,
+    PIXMAN_OP_DARKEN,
+    PIXMAN_OP_LIGHTEN,
+    PIXMAN_OP_COLOR_DODGE,
+    PIXMAN_OP_COLOR_BURN,
+    PIXMAN_OP_HARD_LIGHT,
+    PIXMAN_OP_DIFFERENCE,
+    PIXMAN_OP_EXCLUSION,
+    PIXMAN_OP_SOFT_LIGHT,
+    PIXMAN_OP_HSL_HUE,
+    PIXMAN_OP_HSL_SATURATION,
+    PIXMAN_OP_HSL_COLOR,
+    PIXMAN_OP_HSL_LUMINOSITY,
+};
+
+static float
+rand_float (void)
+{
+    uint32_t u = lcg_rand_u32();
+
+    return *(float *)&u;
+}
+
+static void
+random_floats (argb_t *argb, int width)
+{
+    int i;
+
+    for (i = 0; i < width; ++i)
+    {
+	argb_t *p = argb + i;
+
+	p->a = rand_float();
+	p->r = rand_float();
+	p->g = rand_float();
+	p->b = rand_float();
+    }
+}
+
+#define WIDTH	512
+
+static pixman_combine_float_func_t
+lookup_combiner (pixman_implementation_t *imp, pixman_op_t op,
+		 pixman_bool_t component_alpha)
+{
+    pixman_combine_float_func_t f;
+
+    do
+    {
+	if (component_alpha)
+	    f = imp->combine_float_ca[op];
+	else
+	    f = imp->combine_float[op];
+	
+	imp = imp->fallback;
+    }
+    while (!f);
+
+    return f;
+}
+
+int
+main ()
+{
+    pixman_implementation_t *impl;
+    argb_t *src_bytes = malloc (WIDTH * sizeof (argb_t));
+    argb_t *mask_bytes = malloc (WIDTH * sizeof (argb_t));
+    argb_t *dest_bytes = malloc (WIDTH * sizeof (argb_t));
+    int i;
+
+    enable_fp_exceptions();
+    
+    impl = _pixman_internal_only_get_implementation();
+    
+    lcg_srand (0);
+
+    for (i = 0; i < ARRAY_LENGTH (op_list); ++i)
+    {
+	pixman_op_t op = op_list[i];
+	pixman_combine_float_func_t combiner;
+	int ca;
+
+	for (ca = 0; ca < 2; ++ca)
+	{
+	    combiner = lookup_combiner (impl, op, ca);
+
+	    random_floats (src_bytes, WIDTH);
+	    random_floats (mask_bytes, WIDTH);
+	    random_floats (dest_bytes, WIDTH);
+
+	    combiner (impl, op,
+		      (float *)dest_bytes,
+		      (float *)mask_bytes,
+		      (float *)src_bytes,
+		      WIDTH);
+	}
+    }	
+
+    return 0;
+}