--- /dev/null
+/*
+ * Copyright © 2000 Keith Packard, member of The XFree86 Project, Inc.
+ * 2005 Lars Knoll & Zack Rusin, Trolltech
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of Keith Packard not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission. Keith Packard makes no
+ * representations about the suitability of this software for any purpose. It
+ * is provided "as is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ */
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <math.h>
+#include <string.h>
+
+#include "pixman-private.h"
+#include "pixman-combine32.h"
+
+/* component alpha helper functions */
+
+static void
+combine_mask_ca (uint32_t *src, uint32_t *mask)
+{
+ uint32_t a = *mask;
+
+ uint32_t x;
+ uint16_t xa;
+
+ if (!a)
+ {
+ *(src) = 0;
+ return;
+ }
+
+ x = *(src);
+ if (a == ~0)
+ {
+ x = x >> A_SHIFT;
+ x |= x << G_SHIFT;
+ x |= x << R_SHIFT;
+ *(mask) = x;
+ return;
+ }
+
+ xa = x >> A_SHIFT;
+ UN8x4_MUL_UN8x4 (x, a);
+ *(src) = x;
+
+ UN8x4_MUL_UN8 (a, xa);
+ *(mask) = a;
+}
+
+static void
+combine_mask_value_ca (uint32_t *src, const uint32_t *mask)
+{
+ uint32_t a = *mask;
+ uint32_t x;
+
+ if (!a)
+ {
+ *(src) = 0;
+ return;
+ }
+
+ if (a == ~0)
+ return;
+
+ x = *(src);
+ UN8x4_MUL_UN8x4 (x, a);
+ *(src) = x;
+}
+
+static void
+combine_mask_alpha_ca (const uint32_t *src, uint32_t *mask)
+{
+ uint32_t a = *(mask);
+ uint32_t x;
+
+ if (!a)
+ return;
+
+ x = *(src) >> A_SHIFT;
+ if (x == MASK)
+ return;
+
+ if (a == ~0)
+ {
+ x |= x << G_SHIFT;
+ x |= x << R_SHIFT;
+ *(mask) = x;
+ return;
+ }
+
+ UN8x4_MUL_UN8 (a, x);
+ *(mask) = a;
+}
+
+/*
+ * There are two ways of handling alpha -- either as a single unified value or
+ * a separate value for each component, hence each macro must have two
+ * versions. The unified alpha version has a 'u' at the end of the name,
+ * the component version has a 'ca'. Similarly, functions which deal with
+ * this difference will have two versions using the same convention.
+ */
+
+static force_inline uint32_t
+combine_mask (const uint32_t *src, const uint32_t *mask, int i)
+{
+ uint32_t s, m;
+
+ if (mask)
+ {
+ m = *(mask + i) >> A_SHIFT;
+
+ if (!m)
+ return 0;
+ }
+
+ s = *(src + i);
+
+ if (mask)
+ UN8x4_MUL_UN8 (s, m);
+
+ return s;
+}
+
+static void
+combine_clear (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ memset (dest, 0, width * sizeof (uint32_t));
+}
+
+static void
+combine_dst (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ return;
+}
+
+static void
+combine_src_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ int i;
+
+ if (!mask)
+ {
+ memcpy (dest, src, width * sizeof (uint32_t));
+ }
+ else
+ {
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t s = combine_mask (src, mask, i);
+
+ *(dest + i) = s;
+ }
+ }
+}
+
+static void
+combine_over_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ int i;
+
+ if (!mask)
+ {
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t s = *(src + i);
+ uint32_t a = ALPHA_8 (s);
+ if (a == 0xFF)
+ {
+ *(dest + i) = s;
+ }
+ else if (s)
+ {
+ uint32_t d = *(dest + i);
+ uint32_t ia = a ^ 0xFF;
+ UN8x4_MUL_UN8_ADD_UN8x4 (d, ia, s);
+ *(dest + i) = d;
+ }
+ }
+ }
+ else
+ {
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t m = ALPHA_8 (*(mask + i));
+ if (m == 0xFF)
+ {
+ uint32_t s = *(src + i);
+ uint32_t a = ALPHA_8 (s);
+ if (a == 0xFF)
+ {
+ *(dest + i) = s;
+ }
+ else if (s)
+ {
+ uint32_t d = *(dest + i);
+ uint32_t ia = a ^ 0xFF;
+ UN8x4_MUL_UN8_ADD_UN8x4 (d, ia, s);
+ *(dest + i) = d;
+ }
+ }
+ else if (m)
+ {
+ uint32_t s = *(src + i);
+ if (s)
+ {
+ uint32_t d = *(dest + i);
+ UN8x4_MUL_UN8 (s, m);
+ UN8x4_MUL_UN8_ADD_UN8x4 (d, ALPHA_8 (~s), s);
+ *(dest + i) = d;
+ }
+ }
+ }
+ }
+}
+
+static void
+combine_over_reverse_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t s = combine_mask (src, mask, i);
+ uint32_t d = *(dest + i);
+ uint32_t ia = ALPHA_8 (~*(dest + i));
+ UN8x4_MUL_UN8_ADD_UN8x4 (s, ia, d);
+ *(dest + i) = s;
+ }
+}
+
+static void
+combine_in_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t s = combine_mask (src, mask, i);
+ uint32_t a = ALPHA_8 (*(dest + i));
+ UN8x4_MUL_UN8 (s, a);
+ *(dest + i) = s;
+ }
+}
+
+static void
+combine_in_reverse_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t s = combine_mask (src, mask, i);
+ uint32_t d = *(dest + i);
+ uint32_t a = ALPHA_8 (s);
+ UN8x4_MUL_UN8 (d, a);
+ *(dest + i) = d;
+ }
+}
+
+static void
+combine_out_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t s = combine_mask (src, mask, i);
+ uint32_t a = ALPHA_8 (~*(dest + i));
+ UN8x4_MUL_UN8 (s, a);
+ *(dest + i) = s;
+ }
+}
+
+static void
+combine_out_reverse_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t s = combine_mask (src, mask, i);
+ uint32_t d = *(dest + i);
+ uint32_t a = ALPHA_8 (~s);
+ UN8x4_MUL_UN8 (d, a);
+ *(dest + i) = d;
+ }
+}
+
+static void
+combine_atop_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t s = combine_mask (src, mask, i);
+ uint32_t d = *(dest + i);
+ uint32_t dest_a = ALPHA_8 (d);
+ uint32_t src_ia = ALPHA_8 (~s);
+
+ UN8x4_MUL_UN8_ADD_UN8x4_MUL_UN8 (s, dest_a, d, src_ia);
+ *(dest + i) = s;
+ }
+}
+
+static void
+combine_atop_reverse_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t s = combine_mask (src, mask, i);
+ uint32_t d = *(dest + i);
+ uint32_t src_a = ALPHA_8 (s);
+ uint32_t dest_ia = ALPHA_8 (~d);
+
+ UN8x4_MUL_UN8_ADD_UN8x4_MUL_UN8 (s, dest_ia, d, src_a);
+ *(dest + i) = s;
+ }
+}
+
+static void
+combine_xor_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t s = combine_mask (src, mask, i);
+ uint32_t d = *(dest + i);
+ uint32_t src_ia = ALPHA_8 (~s);
+ uint32_t dest_ia = ALPHA_8 (~d);
+
+ UN8x4_MUL_UN8_ADD_UN8x4_MUL_UN8 (s, dest_ia, d, src_ia);
+ *(dest + i) = s;
+ }
+}
+
+static void
+combine_add_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t s = combine_mask (src, mask, i);
+ uint32_t d = *(dest + i);
+ UN8x4_ADD_UN8x4 (d, s);
+ *(dest + i) = d;
+ }
+}
+
+static void
+combine_saturate_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t s = combine_mask (src, mask, i);
+ uint32_t d = *(dest + i);
+ uint16_t sa, da;
+
+ sa = s >> A_SHIFT;
+ da = ~d >> A_SHIFT;
+ if (sa > da)
+ {
+ sa = DIV_UN8 (da, sa);
+ UN8x4_MUL_UN8 (s, sa);
+ }
+ ;
+ UN8x4_ADD_UN8x4 (d, s);
+ *(dest + i) = d;
+ }
+}
+
+
+/*
+ * PDF blend modes:
+ *
+ * The following blend modes have been taken from the PDF ISO 32000
+ * specification, which at this point in time is available from
+ *
+ * http://www.adobe.com/devnet/pdf/pdf_reference.html
+ *
+ * The specific documents of interest are the PDF spec itself:
+ *
+ * http://wwwimages.adobe.com/www.adobe.com/content/dam/Adobe/en/devnet/pdf/pdfs/PDF32000_2008.pdf
+ *
+ * chapters 11.3.5 and 11.3.6 and a later supplement for Adobe Acrobat
+ * 9.1 and Reader 9.1:
+ *
+ * http://wwwimages.adobe.com/www.adobe.com/content/dam/Adobe/en/devnet/pdf/pdfs/adobe_supplement_iso32000_1.pdf
+ *
+ * that clarifies the specifications for blend modes ColorDodge and
+ * ColorBurn.
+ *
+ * The formula for computing the final pixel color given in 11.3.6 is:
+ *
+ * αr × Cr = (1 – αs) × αb × Cb + (1 – αb) × αs × Cs + αb × αs × B(Cb, Cs)
+ *
+ * with B() is the blend function. When B(Cb, Cs) = Cs, this formula
+ * reduces to the regular OVER operator.
+ *
+ * Cs and Cb are not premultiplied, so in our implementation we instead
+ * use:
+ *
+ * cr = (1 – αs) × cb + (1 – αb) × cs + αb × αs × B (cb/αb, cs/αs)
+ *
+ * where cr, cs, and cb are premultiplied colors, and where the
+ *
+ * αb × αs × B(cb/αb, cs/αs)
+ *
+ * part is first arithmetically simplified under the assumption that αb
+ * and αs are not 0, and then updated to produce a meaningful result when
+ * they are.
+ *
+ * For all the blend mode operators, the alpha channel is given by
+ *
+ * αr = αs + αb + αb × αs
+ */
+
+/*
+ * Multiply
+ *
+ * ad * as * B(d / ad, s / as)
+ * = ad * as * d/ad * s/as
+ * = d * s
+ *
+ */
+static void
+combine_multiply_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t s = combine_mask (src, mask, i);
+ uint32_t d = *(dest + i);
+ uint32_t ss = s;
+ uint32_t src_ia = ALPHA_8 (~s);
+ uint32_t dest_ia = ALPHA_8 (~d);
+
+ UN8x4_MUL_UN8_ADD_UN8x4_MUL_UN8 (ss, dest_ia, d, src_ia);
+ UN8x4_MUL_UN8x4 (d, s);
+ UN8x4_ADD_UN8x4 (d, ss);
+
+ *(dest + i) = d;
+ }
+}
+
+static void
+combine_multiply_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t m = *(mask + i);
+ uint32_t s = *(src + i);
+ uint32_t d = *(dest + i);
+ uint32_t r = d;
+ uint32_t dest_ia = ALPHA_8 (~d);
+
+ combine_mask_ca (&s, &m);
+
+ UN8x4_MUL_UN8x4_ADD_UN8x4_MUL_UN8 (r, ~m, s, dest_ia);
+ UN8x4_MUL_UN8x4 (d, s);
+ UN8x4_ADD_UN8x4 (r, d);
+
+ *(dest + i) = r;
+ }
+}
+
+#define PDF_SEPARABLE_BLEND_MODE(name) \
+ static void \
+ combine_ ## name ## _u (pixman_implementation_t *imp, \
+ pixman_op_t op, \
+ uint32_t * dest, \
+ const uint32_t * src, \
+ const uint32_t * mask, \
+ int width) \
+ { \
+ int i; \
+ for (i = 0; i < width; ++i) \
+ { \
+ uint32_t s = combine_mask (src, mask, i); \
+ uint32_t d = *(dest + i); \
+ uint8_t sa = ALPHA_8 (s); \
+ uint8_t isa = ~sa; \
+ uint8_t da = ALPHA_8 (d); \
+ uint8_t ida = ~da; \
+ uint32_t result; \
+ \
+ result = d; \
+ UN8x4_MUL_UN8_ADD_UN8x4_MUL_UN8 (result, isa, s, ida); \
+ \
+ *(dest + i) = result + \
+ (DIV_ONE_UN8 (sa * (uint32_t)da) << A_SHIFT) + \
+ (blend_ ## name (RED_8 (d), da, RED_8 (s), sa) << R_SHIFT) + \
+ (blend_ ## name (GREEN_8 (d), da, GREEN_8 (s), sa) << G_SHIFT) + \
+ (blend_ ## name (BLUE_8 (d), da, BLUE_8 (s), sa)); \
+ } \
+ } \
+ \
+ static void \
+ combine_ ## name ## _ca (pixman_implementation_t *imp, \
+ pixman_op_t op, \
+ uint32_t * dest, \
+ const uint32_t * src, \
+ const uint32_t * mask, \
+ int width) \
+ { \
+ int i; \
+ for (i = 0; i < width; ++i) \
+ { \
+ uint32_t m = *(mask + i); \
+ uint32_t s = *(src + i); \
+ uint32_t d = *(dest + i); \
+ uint8_t da = ALPHA_8 (d); \
+ uint8_t ida = ~da; \
+ uint32_t result; \
+ \
+ combine_mask_ca (&s, &m); \
+ \
+ result = d; \
+ UN8x4_MUL_UN8x4_ADD_UN8x4_MUL_UN8 (result, ~m, s, ida); \
+ \
+ result += \
+ (DIV_ONE_UN8 (ALPHA_8 (m) * (uint32_t)da) << A_SHIFT) + \
+ (blend_ ## name (RED_8 (d), da, RED_8 (s), RED_8 (m)) << R_SHIFT) + \
+ (blend_ ## name (GREEN_8 (d), da, GREEN_8 (s), GREEN_8 (m)) << G_SHIFT) + \
+ (blend_ ## name (BLUE_8 (d), da, BLUE_8 (s), BLUE_8 (m))); \
+ \
+ *(dest + i) = result; \
+ } \
+ }
+
+/*
+ * Screen
+ *
+ * ad * as * B(d/ad, s/as)
+ * = ad * as * (d/ad + s/as - s/as * d/ad)
+ * = ad * s + as * d - s * d
+ */
+static inline uint32_t
+blend_screen (uint32_t d, uint32_t ad, uint32_t s, uint32_t as)
+{
+ return DIV_ONE_UN8 (s * ad + d * as - s * d);
+}
+
+PDF_SEPARABLE_BLEND_MODE (screen)
+
+/*
+ * Overlay
+ *
+ * ad * as * B(d/ad, s/as)
+ * = ad * as * Hardlight (s, d)
+ * = if (d / ad < 0.5)
+ * as * ad * Multiply (s/as, 2 * d/ad)
+ * else
+ * as * ad * Screen (s/as, 2 * d / ad - 1)
+ * = if (d < 0.5 * ad)
+ * as * ad * s/as * 2 * d /ad
+ * else
+ * as * ad * (s/as + 2 * d / ad - 1 - s / as * (2 * d / ad - 1))
+ * = if (2 * d < ad)
+ * 2 * s * d
+ * else
+ * ad * s + 2 * as * d - as * ad - ad * s * (2 * d / ad - 1)
+ * = if (2 * d < ad)
+ * 2 * s * d
+ * else
+ * as * ad - 2 * (ad - d) * (as - s)
+ */
+static inline uint32_t
+blend_overlay (uint32_t d, uint32_t ad, uint32_t s, uint32_t as)
+{
+ uint32_t r;
+
+ if (2 * d < ad)
+ r = 2 * s * d;
+ else
+ r = as * ad - 2 * (ad - d) * (as - s);
+
+ return DIV_ONE_UN8 (r);
+}
+
+PDF_SEPARABLE_BLEND_MODE (overlay)
+
+/*
+ * Darken
+ *
+ * ad * as * B(d/ad, s/as)
+ * = ad * as * MIN(d/ad, s/as)
+ * = MIN (as * d, ad * s)
+ */
+static inline uint32_t
+blend_darken (uint32_t d, uint32_t ad, uint32_t s, uint32_t as)
+{
+ s = ad * s;
+ d = as * d;
+
+ return DIV_ONE_UN8 (s > d ? d : s);
+}
+
+PDF_SEPARABLE_BLEND_MODE (darken)
+
+/*
+ * Lighten
+ *
+ * ad * as * B(d/ad, s/as)
+ * = ad * as * MAX(d/ad, s/as)
+ * = MAX (as * d, ad * s)
+ */
+static inline uint32_t
+blend_lighten (uint32_t d, uint32_t ad, uint32_t s, uint32_t as)
+{
+ s = ad * s;
+ d = as * d;
+
+ return DIV_ONE_UN8 (s > d ? s : d);
+}
+
+PDF_SEPARABLE_BLEND_MODE (lighten)
+
+/*
+ * Color dodge
+ *
+ * ad * as * B(d/ad, s/as)
+ * = if d/ad = 0
+ * ad * as * 0
+ * else if (d/ad >= (1 - s/as)
+ * ad * as * 1
+ * else
+ * ad * as * ((d/ad) / (1 - s/as))
+ * = if d = 0
+ * 0
+ * elif as * d >= ad * (as - s)
+ * ad * as
+ * else
+ * as * (as * d / (as - s))
+ *
+ */
+static inline uint32_t
+blend_color_dodge (uint32_t d, uint32_t ad, uint32_t s, uint32_t as)
+{
+ if (d == 0)
+ return 0;
+ else if (as * d >= ad * (as - s))
+ return DIV_ONE_UN8 (as * ad);
+ else if (as - s == 0)
+ return DIV_ONE_UN8 (as * ad);
+ else
+ return DIV_ONE_UN8 (as * ((d * as) / ((as - s))));
+}
+
+PDF_SEPARABLE_BLEND_MODE (color_dodge)
+
+/*
+ * Color burn
+ *
+ * We modify the first clause "if d = 1" to "if d >= 1" since with
+ * premultiplied colors d > 1 can actually happen.
+ *
+ * ad * as * B(d/ad, s/as)
+ * = if d/ad >= 1
+ * ad * as * 1
+ * elif (1 - d/ad) >= s/as
+ * ad * as * 0
+ * else
+ * ad * as * (1 - ((1 - d/ad) / (s/as)))
+ * = if d >= ad
+ * ad * as
+ * elif as * ad - as * d >= ad * s
+ * 0
+ * else
+ * ad * as - as * as * (ad - d) / s
+ */
+static inline uint32_t
+blend_color_burn (uint32_t d, uint32_t ad, uint32_t s, uint32_t as)
+{
+ if (d >= ad)
+ return DIV_ONE_UN8 (ad * as);
+ else if (as * ad - as * d >= ad * s)
+ return 0;
+ else if (s == 0)
+ return 0;
+ else
+ return DIV_ONE_UN8 (ad * as - (as * as * (ad - d)) / s);
+}
+
+PDF_SEPARABLE_BLEND_MODE (color_burn)
+
+/*
+ * Hard light
+ *
+ * ad * as * B(d/ad, s/as)
+ * = if (s/as <= 0.5)
+ * ad * as * Multiply (d/ad, 2 * s/as)
+ * else
+ * ad * as * Screen (d/ad, 2 * s/as - 1)
+ * = if 2 * s <= as
+ * ad * as * d/ad * 2 * s / as
+ * else
+ * ad * as * (d/ad + (2 * s/as - 1) + d/ad * (2 * s/as - 1))
+ * = if 2 * s <= as
+ * 2 * s * d
+ * else
+ * as * ad - 2 * (ad - d) * (as - s)
+ */
+static inline uint32_t
+blend_hard_light (uint32_t d, uint32_t ad, uint32_t s, uint32_t as)
+{
+ if (2 * s < as)
+ return DIV_ONE_UN8 (2 * s * d);
+ else
+ return DIV_ONE_UN8 (as * ad - 2 * (ad - d) * (as - s));
+}
+
+PDF_SEPARABLE_BLEND_MODE (hard_light)
+
+/*
+ * Soft light
+ *
+ * ad * as * B(d/ad, s/as)
+ * = if (s/as <= 0.5)
+ * ad * as * (d/ad - (1 - 2 * s/as) * d/ad * (1 - d/ad))
+ * else if (d/ad <= 0.25)
+ * ad * as * (d/ad + (2 * s/as - 1) * ((((16 * d/ad - 12) * d/ad + 4) * d/ad) - d/ad))
+ * else
+ * ad * as * (d/ad + (2 * s/as - 1) * sqrt (d/ad))
+ * = if (2 * s <= as)
+ * d * as - d * (ad - d) * (as - 2 * s) / ad;
+ * else if (4 * d <= ad)
+ * (2 * s - as) * d * ((16 * d / ad - 12) * d / ad + 3);
+ * else
+ * d * as + (sqrt (d * ad) - d) * (2 * s - as);
+ */
+static inline uint32_t
+blend_soft_light (uint32_t d_org,
+ uint32_t ad_org,
+ uint32_t s_org,
+ uint32_t as_org)
+{
+ double d = d_org * (1.0 / MASK);
+ double ad = ad_org * (1.0 / MASK);
+ double s = s_org * (1.0 / MASK);
+ double as = as_org * (1.0 / MASK);
+ double r;
+
+ if (2 * s < as)
+ {
+ if (ad == 0)
+ r = d * as;
+ else
+ r = d * as - d * (ad - d) * (as - 2 * s) / ad;
+ }
+ else if (ad == 0)
+ {
+ r = 0;
+ }
+ else if (4 * d <= ad)
+ {
+ r = d * as +
+ (2 * s - as) * d * ((16 * d / ad - 12) * d / ad + 3);
+ }
+ else
+ {
+ r = d * as + (sqrt (d * ad) - d) * (2 * s - as);
+ }
+ return r * MASK + 0.5;
+}
+
+PDF_SEPARABLE_BLEND_MODE (soft_light)
+
+/*
+ * Difference
+ *
+ * ad * as * B(s/as, d/ad)
+ * = ad * as * abs (s/as - d/ad)
+ * = if (s/as <= d/ad)
+ * ad * as * (d/ad - s/as)
+ * else
+ * ad * as * (s/as - d/ad)
+ * = if (ad * s <= as * d)
+ * as * d - ad * s
+ * else
+ * ad * s - as * d
+ */
+static inline uint32_t
+blend_difference (uint32_t d, uint32_t ad, uint32_t s, uint32_t as)
+{
+ uint32_t das = d * as;
+ uint32_t sad = s * ad;
+
+ if (sad < das)
+ return DIV_ONE_UN8 (das - sad);
+ else
+ return DIV_ONE_UN8 (sad - das);
+}
+
+PDF_SEPARABLE_BLEND_MODE (difference)
+
+/*
+ * Exclusion
+ *
+ * ad * as * B(s/as, d/ad)
+ * = ad * as * (d/ad + s/as - 2 * d/ad * s/as)
+ * = as * d + ad * s - 2 * s * d
+ */
+
+/* This can be made faster by writing it directly and not using
+ * PDF_SEPARABLE_BLEND_MODE, but that's a performance optimization */
+
+static inline uint32_t
+blend_exclusion (uint32_t d, uint32_t ad, uint32_t s, uint32_t as)
+{
+ return DIV_ONE_UN8 (s * ad + d * as - 2 * d * s);
+}
+
+PDF_SEPARABLE_BLEND_MODE (exclusion)
+
+#undef PDF_SEPARABLE_BLEND_MODE
+
+/*
+ * PDF nonseperable blend modes are implemented using the following functions
+ * to operate in Hsl space, with Cmax, Cmid, Cmin referring to the max, mid
+ * and min value of the red, green and blue components.
+ *
+ * LUM (C) = 0.3 × Cred + 0.59 × Cgreen + 0.11 × Cblue
+ *
+ * clip_color (C):
+ * l = LUM (C)
+ * min = Cmin
+ * max = Cmax
+ * if n < 0.0
+ * C = l + (((C – l) × l) ⁄ (l – min))
+ * if x > 1.0
+ * C = l + (((C – l) × (1 – l) ) ⁄ (max – l))
+ * return C
+ *
+ * set_lum (C, l):
+ * d = l – LUM (C)
+ * C += d
+ * return clip_color (C)
+ *
+ * SAT (C) = CH_MAX (C) - CH_MIN (C)
+ *
+ * set_sat (C, s):
+ * if Cmax > Cmin
+ * Cmid = ( ( ( Cmid – Cmin ) × s ) ⁄ ( Cmax – Cmin ) )
+ * Cmax = s
+ * else
+ * Cmid = Cmax = 0.0
+ * Cmin = 0.0
+ * return C
+ */
+
+/* For premultiplied colors, we need to know what happens when C is
+ * multiplied by a real number. LUM and SAT are linear:
+ *
+ * LUM (r × C) = r × LUM (C) SAT (r * C) = r * SAT (C)
+ *
+ * If we extend clip_color with an extra argument a and change
+ *
+ * if x >= 1.0
+ *
+ * into
+ *
+ * if x >= a
+ *
+ * then clip_color is also linear:
+ *
+ * r * clip_color (C, a) = clip_color (r * C, r * a);
+ *
+ * for positive r.
+ *
+ * Similarly, we can extend set_lum with an extra argument that is just passed
+ * on to clip_color:
+ *
+ * r * set_lum (C, l, a)
+ *
+ * = r × clip_color (C + l - LUM (C), a)
+ *
+ * = clip_color (r * C + r × l - r * LUM (C), r * a)
+ *
+ * = set_lum (r * C, r * l, r * a)
+ *
+ * Finally, set_sat:
+ *
+ * r * set_sat (C, s) = set_sat (x * C, r * s)
+ *
+ * The above holds for all non-zero x, because the x'es in the fraction for
+ * C_mid cancel out. Specifically, it holds for x = r:
+ *
+ * r * set_sat (C, s) = set_sat (r * C, r * s)
+ *
+ */
+
+#define CH_MIN(c) (c[0] < c[1] ? (c[0] < c[2] ? c[0] : c[2]) : (c[1] < c[2] ? c[1] : c[2]))
+#define CH_MAX(c) (c[0] > c[1] ? (c[0] > c[2] ? c[0] : c[2]) : (c[1] > c[2] ? c[1] : c[2]))
+#define LUM(c) ((c[0] * 30 + c[1] * 59 + c[2] * 11) / 100)
+#define SAT(c) (CH_MAX (c) - CH_MIN (c))
+
+#define PDF_NON_SEPARABLE_BLEND_MODE(name) \
+ static void \
+ combine_ ## name ## _u (pixman_implementation_t *imp, \
+ pixman_op_t op, \
+ uint32_t * dest, \
+ const uint32_t * src, \
+ const uint32_t * mask, \
+ int width) \
+ { \
+ int i; \
+ for (i = 0; i < width; ++i) \
+ { \
+ uint32_t s = combine_mask (src, mask, i); \
+ uint32_t d = *(dest + i); \
+ uint8_t sa = ALPHA_8 (s); \
+ uint8_t isa = ~sa; \
+ uint8_t da = ALPHA_8 (d); \
+ uint8_t ida = ~da; \
+ uint32_t result; \
+ uint32_t sc[3], dc[3], c[3]; \
+ \
+ result = d; \
+ UN8x4_MUL_UN8_ADD_UN8x4_MUL_UN8 (result, isa, s, ida); \
+ dc[0] = RED_8 (d); \
+ sc[0] = RED_8 (s); \
+ dc[1] = GREEN_8 (d); \
+ sc[1] = GREEN_8 (s); \
+ dc[2] = BLUE_8 (d); \
+ sc[2] = BLUE_8 (s); \
+ blend_ ## name (c, dc, da, sc, sa); \
+ \
+ *(dest + i) = result + \
+ (DIV_ONE_UN8 (sa * (uint32_t)da) << A_SHIFT) + \
+ (DIV_ONE_UN8 (c[0]) << R_SHIFT) + \
+ (DIV_ONE_UN8 (c[1]) << G_SHIFT) + \
+ (DIV_ONE_UN8 (c[2])); \
+ } \
+ }
+
+static void
+set_lum (uint32_t dest[3], uint32_t src[3], uint32_t sa, uint32_t lum)
+{
+ double a, l, min, max;
+ double tmp[3];
+
+ a = sa * (1.0 / MASK);
+
+ l = lum * (1.0 / MASK);
+ tmp[0] = src[0] * (1.0 / MASK);
+ tmp[1] = src[1] * (1.0 / MASK);
+ tmp[2] = src[2] * (1.0 / MASK);
+
+ l = l - LUM (tmp);
+ tmp[0] += l;
+ tmp[1] += l;
+ tmp[2] += l;
+
+ /* clip_color */
+ l = LUM (tmp);
+ min = CH_MIN (tmp);
+ max = CH_MAX (tmp);
+
+ if (min < 0)
+ {
+ if (l - min == 0.0)
+ {
+ tmp[0] = 0;
+ tmp[1] = 0;
+ tmp[2] = 0;
+ }
+ else
+ {
+ tmp[0] = l + (tmp[0] - l) * l / (l - min);
+ tmp[1] = l + (tmp[1] - l) * l / (l - min);
+ tmp[2] = l + (tmp[2] - l) * l / (l - min);
+ }
+ }
+ if (max > a)
+ {
+ if (max - l == 0.0)
+ {
+ tmp[0] = a;
+ tmp[1] = a;
+ tmp[2] = a;
+ }
+ else
+ {
+ tmp[0] = l + (tmp[0] - l) * (a - l) / (max - l);
+ tmp[1] = l + (tmp[1] - l) * (a - l) / (max - l);
+ tmp[2] = l + (tmp[2] - l) * (a - l) / (max - l);
+ }
+ }
+
+ dest[0] = tmp[0] * MASK + 0.5;
+ dest[1] = tmp[1] * MASK + 0.5;
+ dest[2] = tmp[2] * MASK + 0.5;
+}
+
+static void
+set_sat (uint32_t dest[3], uint32_t src[3], uint32_t sat)
+{
+ int id[3];
+ uint32_t min, max;
+
+ if (src[0] > src[1])
+ {
+ if (src[0] > src[2])
+ {
+ id[0] = 0;
+ if (src[1] > src[2])
+ {
+ id[1] = 1;
+ id[2] = 2;
+ }
+ else
+ {
+ id[1] = 2;
+ id[2] = 1;
+ }
+ }
+ else
+ {
+ id[0] = 2;
+ id[1] = 0;
+ id[2] = 1;
+ }
+ }
+ else
+ {
+ if (src[0] > src[2])
+ {
+ id[0] = 1;
+ id[1] = 0;
+ id[2] = 2;
+ }
+ else
+ {
+ id[2] = 0;
+ if (src[1] > src[2])
+ {
+ id[0] = 1;
+ id[1] = 2;
+ }
+ else
+ {
+ id[0] = 2;
+ id[1] = 1;
+ }
+ }
+ }
+
+ max = dest[id[0]];
+ min = dest[id[2]];
+ if (max > min)
+ {
+ dest[id[1]] = (dest[id[1]] - min) * sat / (max - min);
+ dest[id[0]] = sat;
+ dest[id[2]] = 0;
+ }
+ else
+ {
+ dest[0] = dest[1] = dest[2] = 0;
+ }
+}
+
+/* Hue:
+ *
+ * as * ad * B(s/as, d/as)
+ * = as * ad * set_lum (set_sat (s/as, SAT (d/ad)), LUM (d/ad), 1)
+ * = set_lum (set_sat (ad * s, as * SAT (d)), as * LUM (d), as * ad)
+ *
+ */
+static inline void
+blend_hsl_hue (uint32_t r[3],
+ uint32_t d[3],
+ uint32_t ad,
+ uint32_t s[3],
+ uint32_t as)
+{
+ r[0] = s[0] * ad;
+ r[1] = s[1] * ad;
+ r[2] = s[2] * ad;
+ set_sat (r, r, SAT (d) * as);
+ set_lum (r, r, as * ad, LUM (d) * as);
+}
+
+PDF_NON_SEPARABLE_BLEND_MODE (hsl_hue)
+
+/*
+ * Saturation
+ *
+ * as * ad * B(s/as, d/ad)
+ * = as * ad * set_lum (set_sat (d/ad, SAT (s/as)), LUM (d/ad), 1)
+ * = set_lum (as * ad * set_sat (d/ad, SAT (s/as)),
+ * as * LUM (d), as * ad)
+ * = set_lum (set_sat (as * d, ad * SAT (s), as * LUM (d), as * ad))
+ */
+static inline void
+blend_hsl_saturation (uint32_t r[3],
+ uint32_t d[3],
+ uint32_t ad,
+ uint32_t s[3],
+ uint32_t as)
+{
+ r[0] = d[0] * as;
+ r[1] = d[1] * as;
+ r[2] = d[2] * as;
+ set_sat (r, r, SAT (s) * ad);
+ set_lum (r, r, as * ad, LUM (d) * as);
+}
+
+PDF_NON_SEPARABLE_BLEND_MODE (hsl_saturation)
+
+/*
+ * Color
+ *
+ * as * ad * B(s/as, d/as)
+ * = as * ad * set_lum (s/as, LUM (d/ad), 1)
+ * = set_lum (s * ad, as * LUM (d), as * ad)
+ */
+static inline void
+blend_hsl_color (uint32_t r[3],
+ uint32_t d[3],
+ uint32_t ad,
+ uint32_t s[3],
+ uint32_t as)
+{
+ r[0] = s[0] * ad;
+ r[1] = s[1] * ad;
+ r[2] = s[2] * ad;
+ set_lum (r, r, as * ad, LUM (d) * as);
+}
+
+PDF_NON_SEPARABLE_BLEND_MODE (hsl_color)
+
+/*
+ * Luminosity
+ *
+ * as * ad * B(s/as, d/ad)
+ * = as * ad * set_lum (d/ad, LUM (s/as), 1)
+ * = set_lum (as * d, ad * LUM (s), as * ad)
+ */
+static inline void
+blend_hsl_luminosity (uint32_t r[3],
+ uint32_t d[3],
+ uint32_t ad,
+ uint32_t s[3],
+ uint32_t as)
+{
+ r[0] = d[0] * as;
+ r[1] = d[1] * as;
+ r[2] = d[2] * as;
+ set_lum (r, r, as * ad, LUM (s) * ad);
+}
+
+PDF_NON_SEPARABLE_BLEND_MODE (hsl_luminosity)
+
+#undef SAT
+#undef LUM
+#undef CH_MAX
+#undef CH_MIN
+#undef PDF_NON_SEPARABLE_BLEND_MODE
+
+/* All of the disjoint/conjoint composing functions
+ *
+ * The four entries in the first column indicate what source contributions
+ * come from each of the four areas of the picture -- areas covered by neither
+ * A nor B, areas covered only by A, areas covered only by B and finally
+ * areas covered by both A and B.
+ *
+ * Disjoint Conjoint
+ * Fa Fb Fa Fb
+ * (0,0,0,0) 0 0 0 0
+ * (0,A,0,A) 1 0 1 0
+ * (0,0,B,B) 0 1 0 1
+ * (0,A,B,A) 1 min((1-a)/b,1) 1 max(1-a/b,0)
+ * (0,A,B,B) min((1-b)/a,1) 1 max(1-b/a,0) 1
+ * (0,0,0,A) max(1-(1-b)/a,0) 0 min(1,b/a) 0
+ * (0,0,0,B) 0 max(1-(1-a)/b,0) 0 min(a/b,1)
+ * (0,A,0,0) min(1,(1-b)/a) 0 max(1-b/a,0) 0
+ * (0,0,B,0) 0 min(1,(1-a)/b) 0 max(1-a/b,0)
+ * (0,0,B,A) max(1-(1-b)/a,0) min(1,(1-a)/b) min(1,b/a) max(1-a/b,0)
+ * (0,A,0,B) min(1,(1-b)/a) max(1-(1-a)/b,0) max(1-b/a,0) min(1,a/b)
+ * (0,A,B,0) min(1,(1-b)/a) min(1,(1-a)/b) max(1-b/a,0) max(1-a/b,0)
+ *
+ * See http://marc.info/?l=xfree-render&m=99792000027857&w=2 for more
+ * information about these operators.
+ */
+
+#define COMBINE_A_OUT 1
+#define COMBINE_A_IN 2
+#define COMBINE_B_OUT 4
+#define COMBINE_B_IN 8
+
+#define COMBINE_CLEAR 0
+#define COMBINE_A (COMBINE_A_OUT | COMBINE_A_IN)
+#define COMBINE_B (COMBINE_B_OUT | COMBINE_B_IN)
+#define COMBINE_A_OVER (COMBINE_A_OUT | COMBINE_B_OUT | COMBINE_A_IN)
+#define COMBINE_B_OVER (COMBINE_A_OUT | COMBINE_B_OUT | COMBINE_B_IN)
+#define COMBINE_A_ATOP (COMBINE_B_OUT | COMBINE_A_IN)
+#define COMBINE_B_ATOP (COMBINE_A_OUT | COMBINE_B_IN)
+#define COMBINE_XOR (COMBINE_A_OUT | COMBINE_B_OUT)
+
+/* portion covered by a but not b */
+static uint8_t
+combine_disjoint_out_part (uint8_t a, uint8_t b)
+{
+ /* min (1, (1-b) / a) */
+
+ b = ~b; /* 1 - b */
+ if (b >= a) /* 1 - b >= a -> (1-b)/a >= 1 */
+ return MASK; /* 1 */
+ return DIV_UN8 (b, a); /* (1-b) / a */
+}
+
+/* portion covered by both a and b */
+static uint8_t
+combine_disjoint_in_part (uint8_t a, uint8_t b)
+{
+ /* max (1-(1-b)/a,0) */
+ /* = - min ((1-b)/a - 1, 0) */
+ /* = 1 - min (1, (1-b)/a) */
+
+ b = ~b; /* 1 - b */
+ if (b >= a) /* 1 - b >= a -> (1-b)/a >= 1 */
+ return 0; /* 1 - 1 */
+ return ~DIV_UN8(b, a); /* 1 - (1-b) / a */
+}
+
+/* portion covered by a but not b */
+static uint8_t
+combine_conjoint_out_part (uint8_t a, uint8_t b)
+{
+ /* max (1-b/a,0) */
+ /* = 1-min(b/a,1) */
+
+ /* min (1, (1-b) / a) */
+
+ if (b >= a) /* b >= a -> b/a >= 1 */
+ return 0x00; /* 0 */
+ return ~DIV_UN8(b, a); /* 1 - b/a */
+}
+
+/* portion covered by both a and b */
+static uint8_t
+combine_conjoint_in_part (uint8_t a, uint8_t b)
+{
+ /* min (1,b/a) */
+
+ if (b >= a) /* b >= a -> b/a >= 1 */
+ return MASK; /* 1 */
+ return DIV_UN8 (b, a); /* b/a */
+}
+
+#define GET_COMP(v, i) ((uint16_t) (uint8_t) ((v) >> i))
+
+#define ADD(x, y, i, t) \
+ ((t) = GET_COMP (x, i) + GET_COMP (y, i), \
+ (uint32_t) ((uint8_t) ((t) | (0 - ((t) >> G_SHIFT)))) << (i))
+
+#define GENERIC(x, y, i, ax, ay, t, u, v) \
+ ((t) = (MUL_UN8 (GET_COMP (y, i), ay, (u)) + \
+ MUL_UN8 (GET_COMP (x, i), ax, (v))), \
+ (uint32_t) ((uint8_t) ((t) | \
+ (0 - ((t) >> G_SHIFT)))) << (i))
+
+static void
+combine_disjoint_general_u (uint32_t * dest,
+ const uint32_t *src,
+ const uint32_t *mask,
+ int width,
+ uint8_t combine)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t s = combine_mask (src, mask, i);
+ uint32_t d = *(dest + i);
+ uint32_t m, n, o, p;
+ uint16_t Fa, Fb, t, u, v;
+ uint8_t sa = s >> A_SHIFT;
+ uint8_t da = d >> A_SHIFT;
+
+ switch (combine & COMBINE_A)
+ {
+ default:
+ Fa = 0;
+ break;
+
+ case COMBINE_A_OUT:
+ Fa = combine_disjoint_out_part (sa, da);
+ break;
+
+ case COMBINE_A_IN:
+ Fa = combine_disjoint_in_part (sa, da);
+ break;
+
+ case COMBINE_A:
+ Fa = MASK;
+ break;
+ }
+
+ switch (combine & COMBINE_B)
+ {
+ default:
+ Fb = 0;
+ break;
+
+ case COMBINE_B_OUT:
+ Fb = combine_disjoint_out_part (da, sa);
+ break;
+
+ case COMBINE_B_IN:
+ Fb = combine_disjoint_in_part (da, sa);
+ break;
+
+ case COMBINE_B:
+ Fb = MASK;
+ break;
+ }
+ m = GENERIC (s, d, 0, Fa, Fb, t, u, v);
+ n = GENERIC (s, d, G_SHIFT, Fa, Fb, t, u, v);
+ o = GENERIC (s, d, R_SHIFT, Fa, Fb, t, u, v);
+ p = GENERIC (s, d, A_SHIFT, Fa, Fb, t, u, v);
+ s = m | n | o | p;
+ *(dest + i) = s;
+ }
+}
+
+static void
+combine_disjoint_over_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t s = combine_mask (src, mask, i);
+ uint16_t a = s >> A_SHIFT;
+
+ if (s != 0x00)
+ {
+ uint32_t d = *(dest + i);
+ a = combine_disjoint_out_part (d >> A_SHIFT, a);
+ UN8x4_MUL_UN8_ADD_UN8x4 (d, a, s);
+
+ *(dest + i) = d;
+ }
+ }
+}
+
+static void
+combine_disjoint_in_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_disjoint_general_u (dest, src, mask, width, COMBINE_A_IN);
+}
+
+static void
+combine_disjoint_in_reverse_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_disjoint_general_u (dest, src, mask, width, COMBINE_B_IN);
+}
+
+static void
+combine_disjoint_out_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_disjoint_general_u (dest, src, mask, width, COMBINE_A_OUT);
+}
+
+static void
+combine_disjoint_out_reverse_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_disjoint_general_u (dest, src, mask, width, COMBINE_B_OUT);
+}
+
+static void
+combine_disjoint_atop_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_disjoint_general_u (dest, src, mask, width, COMBINE_A_ATOP);
+}
+
+static void
+combine_disjoint_atop_reverse_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_disjoint_general_u (dest, src, mask, width, COMBINE_B_ATOP);
+}
+
+static void
+combine_disjoint_xor_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_disjoint_general_u (dest, src, mask, width, COMBINE_XOR);
+}
+
+static void
+combine_conjoint_general_u (uint32_t * dest,
+ const uint32_t *src,
+ const uint32_t *mask,
+ int width,
+ uint8_t combine)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t s = combine_mask (src, mask, i);
+ uint32_t d = *(dest + i);
+ uint32_t m, n, o, p;
+ uint16_t Fa, Fb, t, u, v;
+ uint8_t sa = s >> A_SHIFT;
+ uint8_t da = d >> A_SHIFT;
+
+ switch (combine & COMBINE_A)
+ {
+ default:
+ Fa = 0;
+ break;
+
+ case COMBINE_A_OUT:
+ Fa = combine_conjoint_out_part (sa, da);
+ break;
+
+ case COMBINE_A_IN:
+ Fa = combine_conjoint_in_part (sa, da);
+ break;
+
+ case COMBINE_A:
+ Fa = MASK;
+ break;
+ }
+
+ switch (combine & COMBINE_B)
+ {
+ default:
+ Fb = 0;
+ break;
+
+ case COMBINE_B_OUT:
+ Fb = combine_conjoint_out_part (da, sa);
+ break;
+
+ case COMBINE_B_IN:
+ Fb = combine_conjoint_in_part (da, sa);
+ break;
+
+ case COMBINE_B:
+ Fb = MASK;
+ break;
+ }
+
+ m = GENERIC (s, d, 0, Fa, Fb, t, u, v);
+ n = GENERIC (s, d, G_SHIFT, Fa, Fb, t, u, v);
+ o = GENERIC (s, d, R_SHIFT, Fa, Fb, t, u, v);
+ p = GENERIC (s, d, A_SHIFT, Fa, Fb, t, u, v);
+
+ s = m | n | o | p;
+
+ *(dest + i) = s;
+ }
+}
+
+static void
+combine_conjoint_over_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_conjoint_general_u (dest, src, mask, width, COMBINE_A_OVER);
+}
+
+static void
+combine_conjoint_over_reverse_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_conjoint_general_u (dest, src, mask, width, COMBINE_B_OVER);
+}
+
+static void
+combine_conjoint_in_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_conjoint_general_u (dest, src, mask, width, COMBINE_A_IN);
+}
+
+static void
+combine_conjoint_in_reverse_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_conjoint_general_u (dest, src, mask, width, COMBINE_B_IN);
+}
+
+static void
+combine_conjoint_out_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_conjoint_general_u (dest, src, mask, width, COMBINE_A_OUT);
+}
+
+static void
+combine_conjoint_out_reverse_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_conjoint_general_u (dest, src, mask, width, COMBINE_B_OUT);
+}
+
+static void
+combine_conjoint_atop_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_conjoint_general_u (dest, src, mask, width, COMBINE_A_ATOP);
+}
+
+static void
+combine_conjoint_atop_reverse_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_conjoint_general_u (dest, src, mask, width, COMBINE_B_ATOP);
+}
+
+static void
+combine_conjoint_xor_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_conjoint_general_u (dest, src, mask, width, COMBINE_XOR);
+}
+
+
+/* Component alpha combiners */
+
+static void
+combine_clear_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ memset (dest, 0, width * sizeof(uint32_t));
+}
+
+static void
+combine_src_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t s = *(src + i);
+ uint32_t m = *(mask + i);
+
+ combine_mask_value_ca (&s, &m);
+
+ *(dest + i) = s;
+ }
+}
+
+static void
+combine_over_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t s = *(src + i);
+ uint32_t m = *(mask + i);
+ uint32_t a;
+
+ combine_mask_ca (&s, &m);
+
+ a = ~m;
+ if (a)
+ {
+ uint32_t d = *(dest + i);
+ UN8x4_MUL_UN8x4_ADD_UN8x4 (d, a, s);
+ s = d;
+ }
+
+ *(dest + i) = s;
+ }
+}
+
+static void
+combine_over_reverse_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t d = *(dest + i);
+ uint32_t a = ~d >> A_SHIFT;
+
+ if (a)
+ {
+ uint32_t s = *(src + i);
+ uint32_t m = *(mask + i);
+
+ UN8x4_MUL_UN8x4 (s, m);
+ UN8x4_MUL_UN8_ADD_UN8x4 (s, a, d);
+
+ *(dest + i) = s;
+ }
+ }
+}
+
+static void
+combine_in_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t d = *(dest + i);
+ uint16_t a = d >> A_SHIFT;
+ uint32_t s = 0;
+
+ if (a)
+ {
+ uint32_t m = *(mask + i);
+
+ s = *(src + i);
+ combine_mask_value_ca (&s, &m);
+
+ if (a != MASK)
+ UN8x4_MUL_UN8 (s, a);
+ }
+
+ *(dest + i) = s;
+ }
+}
+
+static void
+combine_in_reverse_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t s = *(src + i);
+ uint32_t m = *(mask + i);
+ uint32_t a;
+
+ combine_mask_alpha_ca (&s, &m);
+
+ a = m;
+ if (a != ~0)
+ {
+ uint32_t d = 0;
+
+ if (a)
+ {
+ d = *(dest + i);
+ UN8x4_MUL_UN8x4 (d, a);
+ }
+
+ *(dest + i) = d;
+ }
+ }
+}
+
+static void
+combine_out_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t d = *(dest + i);
+ uint16_t a = ~d >> A_SHIFT;
+ uint32_t s = 0;
+
+ if (a)
+ {
+ uint32_t m = *(mask + i);
+
+ s = *(src + i);
+ combine_mask_value_ca (&s, &m);
+
+ if (a != MASK)
+ UN8x4_MUL_UN8 (s, a);
+ }
+
+ *(dest + i) = s;
+ }
+}
+
+static void
+combine_out_reverse_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t s = *(src + i);
+ uint32_t m = *(mask + i);
+ uint32_t a;
+
+ combine_mask_alpha_ca (&s, &m);
+
+ a = ~m;
+ if (a != ~0)
+ {
+ uint32_t d = 0;
+
+ if (a)
+ {
+ d = *(dest + i);
+ UN8x4_MUL_UN8x4 (d, a);
+ }
+
+ *(dest + i) = d;
+ }
+ }
+}
+
+static void
+combine_atop_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t d = *(dest + i);
+ uint32_t s = *(src + i);
+ uint32_t m = *(mask + i);
+ uint32_t ad;
+ uint16_t as = d >> A_SHIFT;
+
+ combine_mask_ca (&s, &m);
+
+ ad = ~m;
+
+ UN8x4_MUL_UN8x4_ADD_UN8x4_MUL_UN8 (d, ad, s, as);
+
+ *(dest + i) = d;
+ }
+}
+
+static void
+combine_atop_reverse_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t d = *(dest + i);
+ uint32_t s = *(src + i);
+ uint32_t m = *(mask + i);
+ uint32_t ad;
+ uint16_t as = ~d >> A_SHIFT;
+
+ combine_mask_ca (&s, &m);
+
+ ad = m;
+
+ UN8x4_MUL_UN8x4_ADD_UN8x4_MUL_UN8 (d, ad, s, as);
+
+ *(dest + i) = d;
+ }
+}
+
+static void
+combine_xor_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t d = *(dest + i);
+ uint32_t s = *(src + i);
+ uint32_t m = *(mask + i);
+ uint32_t ad;
+ uint16_t as = ~d >> A_SHIFT;
+
+ combine_mask_ca (&s, &m);
+
+ ad = ~m;
+
+ UN8x4_MUL_UN8x4_ADD_UN8x4_MUL_UN8 (d, ad, s, as);
+
+ *(dest + i) = d;
+ }
+}
+
+static void
+combine_add_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t s = *(src + i);
+ uint32_t m = *(mask + i);
+ uint32_t d = *(dest + i);
+
+ combine_mask_value_ca (&s, &m);
+
+ UN8x4_ADD_UN8x4 (d, s);
+
+ *(dest + i) = d;
+ }
+}
+
+static void
+combine_saturate_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t s, d;
+ uint16_t sa, sr, sg, sb, da;
+ uint16_t t, u, v;
+ uint32_t m, n, o, p;
+
+ d = *(dest + i);
+ s = *(src + i);
+ m = *(mask + i);
+
+ combine_mask_ca (&s, &m);
+
+ sa = (m >> A_SHIFT);
+ sr = (m >> R_SHIFT) & MASK;
+ sg = (m >> G_SHIFT) & MASK;
+ sb = m & MASK;
+ da = ~d >> A_SHIFT;
+
+ if (sb <= da)
+ m = ADD (s, d, 0, t);
+ else
+ m = GENERIC (s, d, 0, (da << G_SHIFT) / sb, MASK, t, u, v);
+
+ if (sg <= da)
+ n = ADD (s, d, G_SHIFT, t);
+ else
+ n = GENERIC (s, d, G_SHIFT, (da << G_SHIFT) / sg, MASK, t, u, v);
+
+ if (sr <= da)
+ o = ADD (s, d, R_SHIFT, t);
+ else
+ o = GENERIC (s, d, R_SHIFT, (da << G_SHIFT) / sr, MASK, t, u, v);
+
+ if (sa <= da)
+ p = ADD (s, d, A_SHIFT, t);
+ else
+ p = GENERIC (s, d, A_SHIFT, (da << G_SHIFT) / sa, MASK, t, u, v);
+
+ *(dest + i) = m | n | o | p;
+ }
+}
+
+static void
+combine_disjoint_general_ca (uint32_t * dest,
+ const uint32_t *src,
+ const uint32_t *mask,
+ int width,
+ uint8_t combine)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t s, d;
+ uint32_t m, n, o, p;
+ uint32_t Fa, Fb;
+ uint16_t t, u, v;
+ uint32_t sa;
+ uint8_t da;
+
+ s = *(src + i);
+ m = *(mask + i);
+ d = *(dest + i);
+ da = d >> A_SHIFT;
+
+ combine_mask_ca (&s, &m);
+
+ sa = m;
+
+ switch (combine & COMBINE_A)
+ {
+ default:
+ Fa = 0;
+ break;
+
+ case COMBINE_A_OUT:
+ m = (uint32_t)combine_disjoint_out_part ((uint8_t) (sa >> 0), da);
+ n = (uint32_t)combine_disjoint_out_part ((uint8_t) (sa >> G_SHIFT), da) << G_SHIFT;
+ o = (uint32_t)combine_disjoint_out_part ((uint8_t) (sa >> R_SHIFT), da) << R_SHIFT;
+ p = (uint32_t)combine_disjoint_out_part ((uint8_t) (sa >> A_SHIFT), da) << A_SHIFT;
+ Fa = m | n | o | p;
+ break;
+
+ case COMBINE_A_IN:
+ m = (uint32_t)combine_disjoint_in_part ((uint8_t) (sa >> 0), da);
+ n = (uint32_t)combine_disjoint_in_part ((uint8_t) (sa >> G_SHIFT), da) << G_SHIFT;
+ o = (uint32_t)combine_disjoint_in_part ((uint8_t) (sa >> R_SHIFT), da) << R_SHIFT;
+ p = (uint32_t)combine_disjoint_in_part ((uint8_t) (sa >> A_SHIFT), da) << A_SHIFT;
+ Fa = m | n | o | p;
+ break;
+
+ case COMBINE_A:
+ Fa = ~0;
+ break;
+ }
+
+ switch (combine & COMBINE_B)
+ {
+ default:
+ Fb = 0;
+ break;
+
+ case COMBINE_B_OUT:
+ m = (uint32_t)combine_disjoint_out_part (da, (uint8_t) (sa >> 0));
+ n = (uint32_t)combine_disjoint_out_part (da, (uint8_t) (sa >> G_SHIFT)) << G_SHIFT;
+ o = (uint32_t)combine_disjoint_out_part (da, (uint8_t) (sa >> R_SHIFT)) << R_SHIFT;
+ p = (uint32_t)combine_disjoint_out_part (da, (uint8_t) (sa >> A_SHIFT)) << A_SHIFT;
+ Fb = m | n | o | p;
+ break;
+
+ case COMBINE_B_IN:
+ m = (uint32_t)combine_disjoint_in_part (da, (uint8_t) (sa >> 0));
+ n = (uint32_t)combine_disjoint_in_part (da, (uint8_t) (sa >> G_SHIFT)) << G_SHIFT;
+ o = (uint32_t)combine_disjoint_in_part (da, (uint8_t) (sa >> R_SHIFT)) << R_SHIFT;
+ p = (uint32_t)combine_disjoint_in_part (da, (uint8_t) (sa >> A_SHIFT)) << A_SHIFT;
+ Fb = m | n | o | p;
+ break;
+
+ case COMBINE_B:
+ Fb = ~0;
+ break;
+ }
+ m = GENERIC (s, d, 0, GET_COMP (Fa, 0), GET_COMP (Fb, 0), t, u, v);
+ n = GENERIC (s, d, G_SHIFT, GET_COMP (Fa, G_SHIFT), GET_COMP (Fb, G_SHIFT), t, u, v);
+ o = GENERIC (s, d, R_SHIFT, GET_COMP (Fa, R_SHIFT), GET_COMP (Fb, R_SHIFT), t, u, v);
+ p = GENERIC (s, d, A_SHIFT, GET_COMP (Fa, A_SHIFT), GET_COMP (Fb, A_SHIFT), t, u, v);
+
+ s = m | n | o | p;
+
+ *(dest + i) = s;
+ }
+}
+
+static void
+combine_disjoint_over_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_disjoint_general_ca (dest, src, mask, width, COMBINE_A_OVER);
+}
+
+static void
+combine_disjoint_in_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_disjoint_general_ca (dest, src, mask, width, COMBINE_A_IN);
+}
+
+static void
+combine_disjoint_in_reverse_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_disjoint_general_ca (dest, src, mask, width, COMBINE_B_IN);
+}
+
+static void
+combine_disjoint_out_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_disjoint_general_ca (dest, src, mask, width, COMBINE_A_OUT);
+}
+
+static void
+combine_disjoint_out_reverse_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_disjoint_general_ca (dest, src, mask, width, COMBINE_B_OUT);
+}
+
+static void
+combine_disjoint_atop_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_disjoint_general_ca (dest, src, mask, width, COMBINE_A_ATOP);
+}
+
+static void
+combine_disjoint_atop_reverse_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_disjoint_general_ca (dest, src, mask, width, COMBINE_B_ATOP);
+}
+
+static void
+combine_disjoint_xor_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_disjoint_general_ca (dest, src, mask, width, COMBINE_XOR);
+}
+
+static void
+combine_conjoint_general_ca (uint32_t * dest,
+ const uint32_t *src,
+ const uint32_t *mask,
+ int width,
+ uint8_t combine)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ uint32_t s, d;
+ uint32_t m, n, o, p;
+ uint32_t Fa, Fb;
+ uint16_t t, u, v;
+ uint32_t sa;
+ uint8_t da;
+
+ s = *(src + i);
+ m = *(mask + i);
+ d = *(dest + i);
+ da = d >> A_SHIFT;
+
+ combine_mask_ca (&s, &m);
+
+ sa = m;
+
+ switch (combine & COMBINE_A)
+ {
+ default:
+ Fa = 0;
+ break;
+
+ case COMBINE_A_OUT:
+ m = (uint32_t)combine_conjoint_out_part ((uint8_t) (sa >> 0), da);
+ n = (uint32_t)combine_conjoint_out_part ((uint8_t) (sa >> G_SHIFT), da) << G_SHIFT;
+ o = (uint32_t)combine_conjoint_out_part ((uint8_t) (sa >> R_SHIFT), da) << R_SHIFT;
+ p = (uint32_t)combine_conjoint_out_part ((uint8_t) (sa >> A_SHIFT), da) << A_SHIFT;
+ Fa = m | n | o | p;
+ break;
+
+ case COMBINE_A_IN:
+ m = (uint32_t)combine_conjoint_in_part ((uint8_t) (sa >> 0), da);
+ n = (uint32_t)combine_conjoint_in_part ((uint8_t) (sa >> G_SHIFT), da) << G_SHIFT;
+ o = (uint32_t)combine_conjoint_in_part ((uint8_t) (sa >> R_SHIFT), da) << R_SHIFT;
+ p = (uint32_t)combine_conjoint_in_part ((uint8_t) (sa >> A_SHIFT), da) << A_SHIFT;
+ Fa = m | n | o | p;
+ break;
+
+ case COMBINE_A:
+ Fa = ~0;
+ break;
+ }
+
+ switch (combine & COMBINE_B)
+ {
+ default:
+ Fb = 0;
+ break;
+
+ case COMBINE_B_OUT:
+ m = (uint32_t)combine_conjoint_out_part (da, (uint8_t) (sa >> 0));
+ n = (uint32_t)combine_conjoint_out_part (da, (uint8_t) (sa >> G_SHIFT)) << G_SHIFT;
+ o = (uint32_t)combine_conjoint_out_part (da, (uint8_t) (sa >> R_SHIFT)) << R_SHIFT;
+ p = (uint32_t)combine_conjoint_out_part (da, (uint8_t) (sa >> A_SHIFT)) << A_SHIFT;
+ Fb = m | n | o | p;
+ break;
+
+ case COMBINE_B_IN:
+ m = (uint32_t)combine_conjoint_in_part (da, (uint8_t) (sa >> 0));
+ n = (uint32_t)combine_conjoint_in_part (da, (uint8_t) (sa >> G_SHIFT)) << G_SHIFT;
+ o = (uint32_t)combine_conjoint_in_part (da, (uint8_t) (sa >> R_SHIFT)) << R_SHIFT;
+ p = (uint32_t)combine_conjoint_in_part (da, (uint8_t) (sa >> A_SHIFT)) << A_SHIFT;
+ Fb = m | n | o | p;
+ break;
+
+ case COMBINE_B:
+ Fb = ~0;
+ break;
+ }
+ m = GENERIC (s, d, 0, GET_COMP (Fa, 0), GET_COMP (Fb, 0), t, u, v);
+ n = GENERIC (s, d, G_SHIFT, GET_COMP (Fa, G_SHIFT), GET_COMP (Fb, G_SHIFT), t, u, v);
+ o = GENERIC (s, d, R_SHIFT, GET_COMP (Fa, R_SHIFT), GET_COMP (Fb, R_SHIFT), t, u, v);
+ p = GENERIC (s, d, A_SHIFT, GET_COMP (Fa, A_SHIFT), GET_COMP (Fb, A_SHIFT), t, u, v);
+
+ s = m | n | o | p;
+
+ *(dest + i) = s;
+ }
+}
+
+static void
+combine_conjoint_over_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_conjoint_general_ca (dest, src, mask, width, COMBINE_A_OVER);
+}
+
+static void
+combine_conjoint_over_reverse_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_conjoint_general_ca (dest, src, mask, width, COMBINE_B_OVER);
+}
+
+static void
+combine_conjoint_in_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_conjoint_general_ca (dest, src, mask, width, COMBINE_A_IN);
+}
+
+static void
+combine_conjoint_in_reverse_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_conjoint_general_ca (dest, src, mask, width, COMBINE_B_IN);
+}
+
+static void
+combine_conjoint_out_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_conjoint_general_ca (dest, src, mask, width, COMBINE_A_OUT);
+}
+
+static void
+combine_conjoint_out_reverse_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_conjoint_general_ca (dest, src, mask, width, COMBINE_B_OUT);
+}
+
+static void
+combine_conjoint_atop_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_conjoint_general_ca (dest, src, mask, width, COMBINE_A_ATOP);
+}
+
+static void
+combine_conjoint_atop_reverse_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_conjoint_general_ca (dest, src, mask, width, COMBINE_B_ATOP);
+}
+
+static void
+combine_conjoint_xor_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ uint32_t * dest,
+ const uint32_t * src,
+ const uint32_t * mask,
+ int width)
+{
+ combine_conjoint_general_ca (dest, src, mask, width, COMBINE_XOR);
+}
+
+void
+_pixman_setup_combiner_functions_32 (pixman_implementation_t *imp)
+{
+ /* Unified alpha */
+ imp->combine_32[PIXMAN_OP_CLEAR] = combine_clear;
+ imp->combine_32[PIXMAN_OP_SRC] = combine_src_u;
+ imp->combine_32[PIXMAN_OP_DST] = combine_dst;
+ imp->combine_32[PIXMAN_OP_OVER] = combine_over_u;
+ imp->combine_32[PIXMAN_OP_OVER_REVERSE] = combine_over_reverse_u;
+ imp->combine_32[PIXMAN_OP_IN] = combine_in_u;
+ imp->combine_32[PIXMAN_OP_IN_REVERSE] = combine_in_reverse_u;
+ imp->combine_32[PIXMAN_OP_OUT] = combine_out_u;
+ imp->combine_32[PIXMAN_OP_OUT_REVERSE] = combine_out_reverse_u;
+ imp->combine_32[PIXMAN_OP_ATOP] = combine_atop_u;
+ imp->combine_32[PIXMAN_OP_ATOP_REVERSE] = combine_atop_reverse_u;
+ imp->combine_32[PIXMAN_OP_XOR] = combine_xor_u;
+ imp->combine_32[PIXMAN_OP_ADD] = combine_add_u;
+ imp->combine_32[PIXMAN_OP_SATURATE] = combine_saturate_u;
+
+ /* Disjoint, unified */
+ imp->combine_32[PIXMAN_OP_DISJOINT_CLEAR] = combine_clear;
+ imp->combine_32[PIXMAN_OP_DISJOINT_SRC] = combine_src_u;
+ imp->combine_32[PIXMAN_OP_DISJOINT_DST] = combine_dst;
+ imp->combine_32[PIXMAN_OP_DISJOINT_OVER] = combine_disjoint_over_u;
+ imp->combine_32[PIXMAN_OP_DISJOINT_OVER_REVERSE] = combine_saturate_u;
+ imp->combine_32[PIXMAN_OP_DISJOINT_IN] = combine_disjoint_in_u;
+ imp->combine_32[PIXMAN_OP_DISJOINT_IN_REVERSE] = combine_disjoint_in_reverse_u;
+ imp->combine_32[PIXMAN_OP_DISJOINT_OUT] = combine_disjoint_out_u;
+ imp->combine_32[PIXMAN_OP_DISJOINT_OUT_REVERSE] = combine_disjoint_out_reverse_u;
+ imp->combine_32[PIXMAN_OP_DISJOINT_ATOP] = combine_disjoint_atop_u;
+ imp->combine_32[PIXMAN_OP_DISJOINT_ATOP_REVERSE] = combine_disjoint_atop_reverse_u;
+ imp->combine_32[PIXMAN_OP_DISJOINT_XOR] = combine_disjoint_xor_u;
+
+ /* Conjoint, unified */
+ imp->combine_32[PIXMAN_OP_CONJOINT_CLEAR] = combine_clear;
+ imp->combine_32[PIXMAN_OP_CONJOINT_SRC] = combine_src_u;
+ imp->combine_32[PIXMAN_OP_CONJOINT_DST] = combine_dst;
+ imp->combine_32[PIXMAN_OP_CONJOINT_OVER] = combine_conjoint_over_u;
+ imp->combine_32[PIXMAN_OP_CONJOINT_OVER_REVERSE] = combine_conjoint_over_reverse_u;
+ imp->combine_32[PIXMAN_OP_CONJOINT_IN] = combine_conjoint_in_u;
+ imp->combine_32[PIXMAN_OP_CONJOINT_IN_REVERSE] = combine_conjoint_in_reverse_u;
+ imp->combine_32[PIXMAN_OP_CONJOINT_OUT] = combine_conjoint_out_u;
+ imp->combine_32[PIXMAN_OP_CONJOINT_OUT_REVERSE] = combine_conjoint_out_reverse_u;
+ imp->combine_32[PIXMAN_OP_CONJOINT_ATOP] = combine_conjoint_atop_u;
+ imp->combine_32[PIXMAN_OP_CONJOINT_ATOP_REVERSE] = combine_conjoint_atop_reverse_u;
+ imp->combine_32[PIXMAN_OP_CONJOINT_XOR] = combine_conjoint_xor_u;
+
+ imp->combine_32[PIXMAN_OP_MULTIPLY] = combine_multiply_u;
+ imp->combine_32[PIXMAN_OP_SCREEN] = combine_screen_u;
+ imp->combine_32[PIXMAN_OP_OVERLAY] = combine_overlay_u;
+ imp->combine_32[PIXMAN_OP_DARKEN] = combine_darken_u;
+ imp->combine_32[PIXMAN_OP_LIGHTEN] = combine_lighten_u;
+ imp->combine_32[PIXMAN_OP_COLOR_DODGE] = combine_color_dodge_u;
+ imp->combine_32[PIXMAN_OP_COLOR_BURN] = combine_color_burn_u;
+ imp->combine_32[PIXMAN_OP_HARD_LIGHT] = combine_hard_light_u;
+ imp->combine_32[PIXMAN_OP_SOFT_LIGHT] = combine_soft_light_u;
+ imp->combine_32[PIXMAN_OP_DIFFERENCE] = combine_difference_u;
+ imp->combine_32[PIXMAN_OP_EXCLUSION] = combine_exclusion_u;
+ imp->combine_32[PIXMAN_OP_HSL_HUE] = combine_hsl_hue_u;
+ imp->combine_32[PIXMAN_OP_HSL_SATURATION] = combine_hsl_saturation_u;
+ imp->combine_32[PIXMAN_OP_HSL_COLOR] = combine_hsl_color_u;
+ imp->combine_32[PIXMAN_OP_HSL_LUMINOSITY] = combine_hsl_luminosity_u;
+
+ /* Component alpha combiners */
+ imp->combine_32_ca[PIXMAN_OP_CLEAR] = combine_clear_ca;
+ imp->combine_32_ca[PIXMAN_OP_SRC] = combine_src_ca;
+ /* dest */
+ imp->combine_32_ca[PIXMAN_OP_OVER] = combine_over_ca;
+ imp->combine_32_ca[PIXMAN_OP_OVER_REVERSE] = combine_over_reverse_ca;
+ imp->combine_32_ca[PIXMAN_OP_IN] = combine_in_ca;
+ imp->combine_32_ca[PIXMAN_OP_IN_REVERSE] = combine_in_reverse_ca;
+ imp->combine_32_ca[PIXMAN_OP_OUT] = combine_out_ca;
+ imp->combine_32_ca[PIXMAN_OP_OUT_REVERSE] = combine_out_reverse_ca;
+ imp->combine_32_ca[PIXMAN_OP_ATOP] = combine_atop_ca;
+ imp->combine_32_ca[PIXMAN_OP_ATOP_REVERSE] = combine_atop_reverse_ca;
+ imp->combine_32_ca[PIXMAN_OP_XOR] = combine_xor_ca;
+ imp->combine_32_ca[PIXMAN_OP_ADD] = combine_add_ca;
+ imp->combine_32_ca[PIXMAN_OP_SATURATE] = combine_saturate_ca;
+
+ /* Disjoint CA */
+ imp->combine_32_ca[PIXMAN_OP_DISJOINT_CLEAR] = combine_clear_ca;
+ imp->combine_32_ca[PIXMAN_OP_DISJOINT_SRC] = combine_src_ca;
+ imp->combine_32_ca[PIXMAN_OP_DISJOINT_DST] = combine_dst;
+ imp->combine_32_ca[PIXMAN_OP_DISJOINT_OVER] = combine_disjoint_over_ca;
+ imp->combine_32_ca[PIXMAN_OP_DISJOINT_OVER_REVERSE] = combine_saturate_ca;
+ imp->combine_32_ca[PIXMAN_OP_DISJOINT_IN] = combine_disjoint_in_ca;
+ imp->combine_32_ca[PIXMAN_OP_DISJOINT_IN_REVERSE] = combine_disjoint_in_reverse_ca;
+ imp->combine_32_ca[PIXMAN_OP_DISJOINT_OUT] = combine_disjoint_out_ca;
+ imp->combine_32_ca[PIXMAN_OP_DISJOINT_OUT_REVERSE] = combine_disjoint_out_reverse_ca;
+ imp->combine_32_ca[PIXMAN_OP_DISJOINT_ATOP] = combine_disjoint_atop_ca;
+ imp->combine_32_ca[PIXMAN_OP_DISJOINT_ATOP_REVERSE] = combine_disjoint_atop_reverse_ca;
+ imp->combine_32_ca[PIXMAN_OP_DISJOINT_XOR] = combine_disjoint_xor_ca;
+
+ /* Conjoint CA */
+ imp->combine_32_ca[PIXMAN_OP_CONJOINT_CLEAR] = combine_clear_ca;
+ imp->combine_32_ca[PIXMAN_OP_CONJOINT_SRC] = combine_src_ca;
+ imp->combine_32_ca[PIXMAN_OP_CONJOINT_DST] = combine_dst;
+ imp->combine_32_ca[PIXMAN_OP_CONJOINT_OVER] = combine_conjoint_over_ca;
+ imp->combine_32_ca[PIXMAN_OP_CONJOINT_OVER_REVERSE] = combine_conjoint_over_reverse_ca;
+ imp->combine_32_ca[PIXMAN_OP_CONJOINT_IN] = combine_conjoint_in_ca;
+ imp->combine_32_ca[PIXMAN_OP_CONJOINT_IN_REVERSE] = combine_conjoint_in_reverse_ca;
+ imp->combine_32_ca[PIXMAN_OP_CONJOINT_OUT] = combine_conjoint_out_ca;
+ imp->combine_32_ca[PIXMAN_OP_CONJOINT_OUT_REVERSE] = combine_conjoint_out_reverse_ca;
+ imp->combine_32_ca[PIXMAN_OP_CONJOINT_ATOP] = combine_conjoint_atop_ca;
+ imp->combine_32_ca[PIXMAN_OP_CONJOINT_ATOP_REVERSE] = combine_conjoint_atop_reverse_ca;
+ imp->combine_32_ca[PIXMAN_OP_CONJOINT_XOR] = combine_conjoint_xor_ca;
+
+ imp->combine_32_ca[PIXMAN_OP_MULTIPLY] = combine_multiply_ca;
+ imp->combine_32_ca[PIXMAN_OP_SCREEN] = combine_screen_ca;
+ imp->combine_32_ca[PIXMAN_OP_OVERLAY] = combine_overlay_ca;
+ imp->combine_32_ca[PIXMAN_OP_DARKEN] = combine_darken_ca;
+ imp->combine_32_ca[PIXMAN_OP_LIGHTEN] = combine_lighten_ca;
+ imp->combine_32_ca[PIXMAN_OP_COLOR_DODGE] = combine_color_dodge_ca;
+ imp->combine_32_ca[PIXMAN_OP_COLOR_BURN] = combine_color_burn_ca;
+ imp->combine_32_ca[PIXMAN_OP_HARD_LIGHT] = combine_hard_light_ca;
+ imp->combine_32_ca[PIXMAN_OP_SOFT_LIGHT] = combine_soft_light_ca;
+ imp->combine_32_ca[PIXMAN_OP_DIFFERENCE] = combine_difference_ca;
+ imp->combine_32_ca[PIXMAN_OP_EXCLUSION] = combine_exclusion_ca;
+
+ /* It is not clear that these make sense, so make them noops for now */
+ imp->combine_32_ca[PIXMAN_OP_HSL_HUE] = combine_dst;
+ imp->combine_32_ca[PIXMAN_OP_HSL_SATURATION] = combine_dst;
+ imp->combine_32_ca[PIXMAN_OP_HSL_COLOR] = combine_dst;
+ imp->combine_32_ca[PIXMAN_OP_HSL_LUMINOSITY] = combine_dst;
+}
Code Review / kvmfornfv.git / blobdiff