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-rw-r--r--pixman/test/utils.c332
1 files changed, 331 insertions, 1 deletions
diff --git a/pixman/test/utils.c b/pixman/test/utils.c
index ba7e35335..3d1ba22ae 100644
--- a/pixman/test/utils.c
+++ b/pixman/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;
@@ -1144,6 +1421,59 @@ pixel_checker_split_pixel (const pixel_checker_t *checker, uint32_t pixel,
*b = (pixel & checker->bm) >> checker->bs;
}
+void
+pixel_checker_get_masks (const pixel_checker_t *checker,
+ uint32_t *am,
+ uint32_t *rm,
+ uint32_t *gm,
+ uint32_t *bm)
+{
+ if (am)
+ *am = checker->am;
+ if (rm)
+ *rm = checker->rm;
+ if (gm)
+ *gm = checker->gm;
+ if (bm)
+ *bm = checker->bm;
+}
+
+void
+pixel_checker_convert_pixel_to_color (const pixel_checker_t *checker,
+ uint32_t pixel, color_t *color)
+{
+ int a, r, g, b;
+
+ pixel_checker_split_pixel (checker, pixel, &a, &r, &g, &b);
+
+ if (checker->am == 0)
+ color->a = 1.0;
+ else
+ color->a = a / (double)(checker->am >> checker->as);
+
+ if (checker->rm == 0)
+ color->r = 0.0;
+ else
+ color->r = r / (double)(checker->rm >> checker->rs);
+
+ if (checker->gm == 0)
+ color->g = 0.0;
+ else
+ color->g = g / (double)(checker->gm >> checker->gs);
+
+ if (checker->bm == 0)
+ color->b = 0.0;
+ else
+ color->b = b / (double)(checker->bm >> checker->bs);
+
+ if (PIXMAN_FORMAT_TYPE (checker->format) == PIXMAN_TYPE_ARGB_SRGB)
+ {
+ color->r = convert_srgb_to_linear (color->r);
+ color->g = convert_srgb_to_linear (color->g);
+ color->b = convert_srgb_to_linear (color->b);
+ }
+}
+
static int32_t
convert (double v, uint32_t width, uint32_t mask, uint32_t shift, double def)
{
@@ -1183,7 +1513,7 @@ get_limits (const pixel_checker_t *checker, double limit,
/* The acceptable deviation in units of [0.0, 1.0]
*/
-#define DEVIATION (0.004)
+#define DEVIATION (0.0064)
void
pixel_checker_get_max (const pixel_checker_t *checker, color_t *color,
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-08 23:12:13 +0000