test: Move do_composite() function from composite.c to utils.c

So that it can be used in other tests.

3 files changed, 285 insertions, 277 deletions

diff --git a/test/composite.c b/test/composite.c
index b107b11..9e51a8f 100644
--- a/test/composite.c
+++ b/test/composite.c
@@ -181,283 +181,6 @@ static const pixman_op_t operators[] =
     PIXMAN_OP_CONJOINT_XOR,
 };
 
-static double
-calc_op (pixman_op_t op, double src, double dst, double srca, double dsta)
-{
-#define mult_chan(src, dst, Fa, Fb) MIN ((src) * (Fa) + (dst) * (Fb), 1.0)
-
-    double Fa, Fb;
-
-    switch (op)
-    {
-    case PIXMAN_OP_CLEAR:
-    case PIXMAN_OP_DISJOINT_CLEAR:
-    case PIXMAN_OP_CONJOINT_CLEAR:
-	return mult_chan (src, dst, 0.0, 0.0);
-
-    case PIXMAN_OP_SRC:
-    case PIXMAN_OP_DISJOINT_SRC:
-    case PIXMAN_OP_CONJOINT_SRC:
-	return mult_chan (src, dst, 1.0, 0.0);
-
-    case PIXMAN_OP_DST:
-    case PIXMAN_OP_DISJOINT_DST:
-    case PIXMAN_OP_CONJOINT_DST:
-	return mult_chan (src, dst, 0.0, 1.0);
-
-    case PIXMAN_OP_OVER:
-	return mult_chan (src, dst, 1.0, 1.0 - srca);
-
-    case PIXMAN_OP_OVER_REVERSE:
-	return mult_chan (src, dst, 1.0 - dsta, 1.0);
-
-    case PIXMAN_OP_IN:
-	return mult_chan (src, dst, dsta, 0.0);
-
-    case PIXMAN_OP_IN_REVERSE:
-	return mult_chan (src, dst, 0.0, srca);
-
-    case PIXMAN_OP_OUT:
-	return mult_chan (src, dst, 1.0 - dsta, 0.0);
-
-    case PIXMAN_OP_OUT_REVERSE:
-	return mult_chan (src, dst, 0.0, 1.0 - srca);
-
-    case PIXMAN_OP_ATOP:
-	return mult_chan (src, dst, dsta, 1.0 - srca);
-
-    case PIXMAN_OP_ATOP_REVERSE:
-	return mult_chan (src, dst, 1.0 - dsta,  srca);
-
-    case PIXMAN_OP_XOR:
-	return mult_chan (src, dst, 1.0 - dsta, 1.0 - srca);
-
-    case PIXMAN_OP_ADD:
-	return mult_chan (src, dst, 1.0, 1.0);
-
-    case PIXMAN_OP_SATURATE:
-    case PIXMAN_OP_DISJOINT_OVER_REVERSE:
-	if (srca == 0.0)
-	    Fa = 1.0;
-	else
-	    Fa = MIN (1.0, (1.0 - dsta) / srca);
-	return mult_chan (src, dst, Fa, 1.0);
-
-    case PIXMAN_OP_DISJOINT_OVER:
-	if (dsta == 0.0)
-	    Fb = 1.0;
-	else
-	    Fb = MIN (1.0, (1.0 - srca) / dsta);
-	return mult_chan (src, dst, 1.0, Fb);
-
-    case PIXMAN_OP_DISJOINT_IN:
-	if (srca == 0.0)
-	    Fa = 0.0;
-	else
-	    Fa = MAX (0.0, 1.0 - (1.0 - dsta) / srca);
-	return mult_chan (src, dst, Fa, 0.0);
-
-    case PIXMAN_OP_DISJOINT_IN_REVERSE:
-	if (dsta == 0.0)
-	    Fb = 0.0;
-	else
-	    Fb = MAX (0.0, 1.0 - (1.0 - srca) / dsta);
-	return mult_chan (src, dst, 0.0, Fb);
-
-    case PIXMAN_OP_DISJOINT_OUT:
-	if (srca == 0.0)
-	    Fa = 1.0;
-	else
-	    Fa = MIN (1.0, (1.0 - dsta) / srca);
-	return mult_chan (src, dst, Fa, 0.0);
-
-    case PIXMAN_OP_DISJOINT_OUT_REVERSE:
-	if (dsta == 0.0)
-	    Fb = 1.0;
-	else
-	    Fb = MIN (1.0, (1.0 - srca) / dsta);
-	return mult_chan (src, dst, 0.0, Fb);
-
-    case PIXMAN_OP_DISJOINT_ATOP:
-	if (srca == 0.0)
-	    Fa = 0.0;
-	else
-	    Fa = MAX (0.0, 1.0 - (1.0 - dsta) / srca);
-	if (dsta == 0.0)
-	    Fb = 1.0;
-	else
-	    Fb = MIN (1.0, (1.0 - srca) / dsta);
-	return mult_chan (src, dst, Fa, Fb);
-
-    case PIXMAN_OP_DISJOINT_ATOP_REVERSE:
-	if (srca == 0.0)
-	    Fa = 1.0;
-	else
-	    Fa = MIN (1.0, (1.0 - dsta) / srca);
-	if (dsta == 0.0)
-	    Fb = 0.0;
-	else
-	    Fb = MAX (0.0, 1.0 - (1.0 - srca) / dsta);
-	return mult_chan (src, dst, Fa, Fb);
-
-    case PIXMAN_OP_DISJOINT_XOR:
-	if (srca == 0.0)
-	    Fa = 1.0;
-	else
-	    Fa = MIN (1.0, (1.0 - dsta) / srca);
-	if (dsta == 0.0)
-	    Fb = 1.0;
-	else
-	    Fb = MIN (1.0, (1.0 - srca) / dsta);
-	return mult_chan (src, dst, Fa, Fb);
-
-    case PIXMAN_OP_CONJOINT_OVER:
-	if (dsta == 0.0)
-	    Fb = 0.0;
-	else
-	    Fb = MAX (0.0, 1.0 - srca / dsta);
-	return mult_chan (src, dst, 1.0, Fb);
-
-    case PIXMAN_OP_CONJOINT_OVER_REVERSE:
-	if (srca == 0.0)
-	    Fa = 0.0;
-	else
-	    Fa = MAX (0.0, 1.0 - dsta / srca);
-	return mult_chan (src, dst, Fa, 1.0);
-
-    case PIXMAN_OP_CONJOINT_IN:
-	if (srca == 0.0)
-	    Fa = 1.0;
-	else
-	    Fa = MIN (1.0, dsta / srca);
-	return mult_chan (src, dst, Fa, 0.0);
-
-    case PIXMAN_OP_CONJOINT_IN_REVERSE:
-	if (dsta == 0.0)
-	    Fb = 1.0;
-	else
-	    Fb = MIN (1.0, srca / dsta);
-	return mult_chan (src, dst, 0.0, Fb);
-
-    case PIXMAN_OP_CONJOINT_OUT:
-	if (srca == 0.0)
-	    Fa = 0.0;
-	else
-	    Fa = MAX (0.0, 1.0 - dsta / srca);
-	return mult_chan (src, dst, Fa, 0.0);
-
-    case PIXMAN_OP_CONJOINT_OUT_REVERSE:
-	if (dsta == 0.0)
-	    Fb = 0.0;
-	else
-	    Fb = MAX (0.0, 1.0 - srca / dsta);
-	return mult_chan (src, dst, 0.0, Fb);
-
-    case PIXMAN_OP_CONJOINT_ATOP:
-	if (srca == 0.0)
-	    Fa = 1.0;
-	else
-	    Fa = MIN (1.0, dsta / srca);
-	if (dsta == 0.0)
-	    Fb = 0.0;
-	else
-	    Fb = MAX (0.0, 1.0 - srca / dsta);
-	return mult_chan (src, dst, Fa, Fb);
-
-    case PIXMAN_OP_CONJOINT_ATOP_REVERSE:
-	if (srca == 0.0)
-	    Fa = 0.0;
-	else
-	    Fa = MAX (0.0, 1.0 - dsta / srca);
-	if (dsta == 0.0)
-	    Fb = 1.0;
-	else
-	    Fb = MIN (1.0, srca / dsta);
-	return mult_chan (src, dst, Fa, Fb);
-
-    case PIXMAN_OP_CONJOINT_XOR:
-	if (srca == 0.0)
-	    Fa = 0.0;
-	else
-	    Fa = MAX (0.0, 1.0 - dsta / srca);
-	if (dsta == 0.0)
-	    Fb = 0.0;
-	else
-	    Fb = MAX (0.0, 1.0 - srca / dsta);
-	return mult_chan (src, dst, Fa, Fb);
-
-    case PIXMAN_OP_MULTIPLY:
-    case PIXMAN_OP_SCREEN:
-    case PIXMAN_OP_OVERLAY:
-    case PIXMAN_OP_DARKEN:
-    case PIXMAN_OP_LIGHTEN:
-    case PIXMAN_OP_COLOR_DODGE:
-    case PIXMAN_OP_COLOR_BURN:
-    case PIXMAN_OP_HARD_LIGHT:
-    case PIXMAN_OP_SOFT_LIGHT:
-    case PIXMAN_OP_DIFFERENCE:
-    case PIXMAN_OP_EXCLUSION:
-    case PIXMAN_OP_HSL_HUE:
-    case PIXMAN_OP_HSL_SATURATION:
-    case PIXMAN_OP_HSL_COLOR:
-    case PIXMAN_OP_HSL_LUMINOSITY:
-    default:
-	abort();
-	return 0; /* silence MSVC */
-    }
-#undef mult_chan
-}
-
-static void
-do_composite (pixman_op_t op,
-	      const color_t *src,
-	      const color_t *mask,
-	      const color_t *dst,
-	      color_t *result,
-	      pixman_bool_t component_alpha)
-{
-    color_t srcval, srcalpha;
-
-    if (mask == NULL)
-    {
-	srcval = *src;
-
-	srcalpha.r = src->a;
-	srcalpha.g = src->a;
-	srcalpha.b = src->a;
-	srcalpha.a = src->a;
-    }
-    else if (component_alpha)
-    {
-	srcval.r = src->r * mask->r;
-	srcval.g = src->g * mask->g;
-	srcval.b = src->b * mask->b;
-	srcval.a = src->a * mask->a;
-
-	srcalpha.r = src->a * mask->r;
-	srcalpha.g = src->a * mask->g;
-	srcalpha.b = src->a * mask->b;
-	srcalpha.a = src->a * mask->a;
-    }
-    else
-    {
-	srcval.r = src->r * mask->a;
-	srcval.g = src->g * mask->a;
-	srcval.b = src->b * mask->a;
-	srcval.a = src->a * mask->a;
-
-	srcalpha.r = src->a * mask->a;
-	srcalpha.g = src->a * mask->a;
-	srcalpha.b = src->a * mask->a;
-	srcalpha.a = src->a * mask->a;
-    }
-
-    result->r = calc_op (op, srcval.r, dst->r, srcalpha.r, dst->a);
-    result->g = calc_op (op, srcval.g, dst->g, srcalpha.g, dst->a);
-    result->b = calc_op (op, srcval.b, dst->b, srcalpha.b, dst->a);
-    result->a = calc_op (op, srcval.a, dst->a, srcalpha.a, dst->a);
-}
-
 static uint32_t
 get_value (pixman_image_t *image)
 {
diff --git a/test/utils.c b/test/utils.c
index ba7e353..27d8fd9 100644
--- a/test/utils.c
+++ b/test/utils.c
@@ -1033,6 +1033,283 @@ format_name (pixman_format_code_t format)
 };
 
 static double
+calc_op (pixman_op_t op, double src, double dst, double srca, double dsta)
+{
+#define mult_chan(src, dst, Fa, Fb) MIN ((src) * (Fa) + (dst) * (Fb), 1.0)
+
+    double Fa, Fb;
+
+    switch (op)
+    {
+    case PIXMAN_OP_CLEAR:
+    case PIXMAN_OP_DISJOINT_CLEAR:
+    case PIXMAN_OP_CONJOINT_CLEAR:
+	return mult_chan (src, dst, 0.0, 0.0);
+
+    case PIXMAN_OP_SRC:
+    case PIXMAN_OP_DISJOINT_SRC:
+    case PIXMAN_OP_CONJOINT_SRC:
+	return mult_chan (src, dst, 1.0, 0.0);
+
+    case PIXMAN_OP_DST:
+    case PIXMAN_OP_DISJOINT_DST:
+    case PIXMAN_OP_CONJOINT_DST:
+	return mult_chan (src, dst, 0.0, 1.0);
+
+    case PIXMAN_OP_OVER:
+	return mult_chan (src, dst, 1.0, 1.0 - srca);
+
+    case PIXMAN_OP_OVER_REVERSE:
+	return mult_chan (src, dst, 1.0 - dsta, 1.0);
+
+    case PIXMAN_OP_IN:
+	return mult_chan (src, dst, dsta, 0.0);
+
+    case PIXMAN_OP_IN_REVERSE:
+	return mult_chan (src, dst, 0.0, srca);
+
+    case PIXMAN_OP_OUT:
+	return mult_chan (src, dst, 1.0 - dsta, 0.0);
+
+    case PIXMAN_OP_OUT_REVERSE:
+	return mult_chan (src, dst, 0.0, 1.0 - srca);
+
+    case PIXMAN_OP_ATOP:
+	return mult_chan (src, dst, dsta, 1.0 - srca);
+
+    case PIXMAN_OP_ATOP_REVERSE:
+	return mult_chan (src, dst, 1.0 - dsta,  srca);
+
+    case PIXMAN_OP_XOR:
+	return mult_chan (src, dst, 1.0 - dsta, 1.0 - srca);
+
+    case PIXMAN_OP_ADD:
+	return mult_chan (src, dst, 1.0, 1.0);
+
+    case PIXMAN_OP_SATURATE:
+    case PIXMAN_OP_DISJOINT_OVER_REVERSE:
+	if (srca == 0.0)
+	    Fa = 1.0;
+	else
+	    Fa = MIN (1.0, (1.0 - dsta) / srca);
+	return mult_chan (src, dst, Fa, 1.0);
+
+    case PIXMAN_OP_DISJOINT_OVER:
+	if (dsta == 0.0)
+	    Fb = 1.0;
+	else
+	    Fb = MIN (1.0, (1.0 - srca) / dsta);
+	return mult_chan (src, dst, 1.0, Fb);
+
+    case PIXMAN_OP_DISJOINT_IN:
+	if (srca == 0.0)
+	    Fa = 0.0;
+	else
+	    Fa = MAX (0.0, 1.0 - (1.0 - dsta) / srca);
+	return mult_chan (src, dst, Fa, 0.0);
+
+    case PIXMAN_OP_DISJOINT_IN_REVERSE:
+	if (dsta == 0.0)
+	    Fb = 0.0;
+	else
+	    Fb = MAX (0.0, 1.0 - (1.0 - srca) / dsta);
+	return mult_chan (src, dst, 0.0, Fb);
+
+    case PIXMAN_OP_DISJOINT_OUT:
+	if (srca == 0.0)
+	    Fa = 1.0;
+	else
+	    Fa = MIN (1.0, (1.0 - dsta) / srca);
+	return mult_chan (src, dst, Fa, 0.0);
+
+    case PIXMAN_OP_DISJOINT_OUT_REVERSE:
+	if (dsta == 0.0)
+	    Fb = 1.0;
+	else
+	    Fb = MIN (1.0, (1.0 - srca) / dsta);
+	return mult_chan (src, dst, 0.0, Fb);
+
+    case PIXMAN_OP_DISJOINT_ATOP:
+	if (srca == 0.0)
+	    Fa = 0.0;
+	else
+	    Fa = MAX (0.0, 1.0 - (1.0 - dsta) / srca);
+	if (dsta == 0.0)
+	    Fb = 1.0;
+	else
+	    Fb = MIN (1.0, (1.0 - srca) / dsta);
+	return mult_chan (src, dst, Fa, Fb);
+
+    case PIXMAN_OP_DISJOINT_ATOP_REVERSE:
+	if (srca == 0.0)
+	    Fa = 1.0;
+	else
+	    Fa = MIN (1.0, (1.0 - dsta) / srca);
+	if (dsta == 0.0)
+	    Fb = 0.0;
+	else
+	    Fb = MAX (0.0, 1.0 - (1.0 - srca) / dsta);
+	return mult_chan (src, dst, Fa, Fb);
+
+    case PIXMAN_OP_DISJOINT_XOR:
+	if (srca == 0.0)
+	    Fa = 1.0;
+	else
+	    Fa = MIN (1.0, (1.0 - dsta) / srca);
+	if (dsta == 0.0)
+	    Fb = 1.0;
+	else
+	    Fb = MIN (1.0, (1.0 - srca) / dsta);
+	return mult_chan (src, dst, Fa, Fb);
+
+    case PIXMAN_OP_CONJOINT_OVER:
+	if (dsta == 0.0)
+	    Fb = 0.0;
+	else
+	    Fb = MAX (0.0, 1.0 - srca / dsta);
+	return mult_chan (src, dst, 1.0, Fb);
+
+    case PIXMAN_OP_CONJOINT_OVER_REVERSE:
+	if (srca == 0.0)
+	    Fa = 0.0;
+	else
+	    Fa = MAX (0.0, 1.0 - dsta / srca);
+	return mult_chan (src, dst, Fa, 1.0);
+
+    case PIXMAN_OP_CONJOINT_IN:
+	if (srca == 0.0)
+	    Fa = 1.0;
+	else
+	    Fa = MIN (1.0, dsta / srca);
+	return mult_chan (src, dst, Fa, 0.0);
+
+    case PIXMAN_OP_CONJOINT_IN_REVERSE:
+	if (dsta == 0.0)
+	    Fb = 1.0;
+	else
+	    Fb = MIN (1.0, srca / dsta);
+	return mult_chan (src, dst, 0.0, Fb);
+
+    case PIXMAN_OP_CONJOINT_OUT:
+	if (srca == 0.0)
+	    Fa = 0.0;
+	else
+	    Fa = MAX (0.0, 1.0 - dsta / srca);
+	return mult_chan (src, dst, Fa, 0.0);
+
+    case PIXMAN_OP_CONJOINT_OUT_REVERSE:
+	if (dsta == 0.0)
+	    Fb = 0.0;
+	else
+	    Fb = MAX (0.0, 1.0 - srca / dsta);
+	return mult_chan (src, dst, 0.0, Fb);
+
+    case PIXMAN_OP_CONJOINT_ATOP:
+	if (srca == 0.0)
+	    Fa = 1.0;
+	else
+	    Fa = MIN (1.0, dsta / srca);
+	if (dsta == 0.0)
+	    Fb = 0.0;
+	else
+	    Fb = MAX (0.0, 1.0 - srca / dsta);
+	return mult_chan (src, dst, Fa, Fb);
+
+    case PIXMAN_OP_CONJOINT_ATOP_REVERSE:
+	if (srca == 0.0)
+	    Fa = 0.0;
+	else
+	    Fa = MAX (0.0, 1.0 - dsta / srca);
+	if (dsta == 0.0)
+	    Fb = 1.0;
+	else
+	    Fb = MIN (1.0, srca / dsta);
+	return mult_chan (src, dst, Fa, Fb);
+
+    case PIXMAN_OP_CONJOINT_XOR:
+	if (srca == 0.0)
+	    Fa = 0.0;
+	else
+	    Fa = MAX (0.0, 1.0 - dsta / srca);
+	if (dsta == 0.0)
+	    Fb = 0.0;
+	else
+	    Fb = MAX (0.0, 1.0 - srca / dsta);
+	return mult_chan (src, dst, Fa, Fb);
+
+    case PIXMAN_OP_MULTIPLY:
+    case PIXMAN_OP_SCREEN:
+    case PIXMAN_OP_OVERLAY:
+    case PIXMAN_OP_DARKEN:
+    case PIXMAN_OP_LIGHTEN:
+    case PIXMAN_OP_COLOR_DODGE:
+    case PIXMAN_OP_COLOR_BURN:
+    case PIXMAN_OP_HARD_LIGHT:
+    case PIXMAN_OP_SOFT_LIGHT:
+    case PIXMAN_OP_DIFFERENCE:
+    case PIXMAN_OP_EXCLUSION:
+    case PIXMAN_OP_HSL_HUE:
+    case PIXMAN_OP_HSL_SATURATION:
+    case PIXMAN_OP_HSL_COLOR:
+    case PIXMAN_OP_HSL_LUMINOSITY:
+    default:
+	abort();
+	return 0; /* silence MSVC */
+    }
+#undef mult_chan
+}
+
+void
+do_composite (pixman_op_t op,
+	      const color_t *src,
+	      const color_t *mask,
+	      const color_t *dst,
+	      color_t *result,
+	      pixman_bool_t component_alpha)
+{
+    color_t srcval, srcalpha;
+
+    if (mask == NULL)
+    {
+	srcval = *src;
+
+	srcalpha.r = src->a;
+	srcalpha.g = src->a;
+	srcalpha.b = src->a;
+	srcalpha.a = src->a;
+    }
+    else if (component_alpha)
+    {
+	srcval.r = src->r * mask->r;
+	srcval.g = src->g * mask->g;
+	srcval.b = src->b * mask->b;
+	srcval.a = src->a * mask->a;
+
+	srcalpha.r = src->a * mask->r;
+	srcalpha.g = src->a * mask->g;
+	srcalpha.b = src->a * mask->b;
+	srcalpha.a = src->a * mask->a;
+    }
+    else
+    {
+	srcval.r = src->r * mask->a;
+	srcval.g = src->g * mask->a;
+	srcval.b = src->b * mask->a;
+	srcval.a = src->a * mask->a;
+
+	srcalpha.r = src->a * mask->a;
+	srcalpha.g = src->a * mask->a;
+	srcalpha.b = src->a * mask->a;
+	srcalpha.a = src->a * mask->a;
+    }
+
+    result->r = calc_op (op, srcval.r, dst->r, srcalpha.r, dst->a);
+    result->g = calc_op (op, srcval.g, dst->g, srcalpha.g, dst->a);
+    result->b = calc_op (op, srcval.b, dst->b, srcalpha.b, dst->a);
+    result->a = calc_op (op, srcval.a, dst->a, srcalpha.a, dst->a);
+}
+
+static double
 round_channel (double p, int m)
 {
     int t;
diff --git a/test/utils.h b/test/utils.h
index 4988314..162aacb 100644
--- a/test/utils.h
+++ b/test/utils.h
@@ -189,6 +189,14 @@ typedef struct
 } color_t;
 
 void
+do_composite (pixman_op_t op,
+	      const color_t *src,
+	      const color_t *mask,
+	      const color_t *dst,
+	      color_t *result,
+	      pixman_bool_t component_alpha);
+
+void
 round_color (pixman_format_code_t format, color_t *color);
 
 typedef struct