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-rw-r--r--pixman/pixman/pixman-combine.c.template4904
1 files changed, 2461 insertions, 2443 deletions
diff --git a/pixman/pixman/pixman-combine.c.template b/pixman/pixman/pixman-combine.c.template
index 9b84de4bc..f5dd8e120 100644
--- a/pixman/pixman/pixman-combine.c.template
+++ b/pixman/pixman/pixman-combine.c.template
@@ -1,2443 +1,2461 @@
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <math.h>
-#include <string.h>
-
-#include "pixman-private.h"
-
-#include "pixman-combine.h"
-
-/*** per channel helper functions ***/
-
-static void
-combine_mask_ca (comp4_t *src, comp4_t *mask)
-{
- comp4_t a = *mask;
-
- comp4_t x;
- comp2_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;
- UNcx4_MUL_UNcx4 (x, a);
- *(src) = x;
-
- UNcx4_MUL_UNc (a, xa);
- *(mask) = a;
-}
-
-static void
-combine_mask_value_ca (comp4_t *src, const comp4_t *mask)
-{
- comp4_t a = *mask;
- comp4_t x;
-
- if (!a)
- {
- *(src) = 0;
- return;
- }
-
- if (a == ~0)
- return;
-
- x = *(src);
- UNcx4_MUL_UNcx4 (x, a);
- *(src) = x;
-}
-
-static void
-combine_mask_alpha_ca (const comp4_t *src, comp4_t *mask)
-{
- comp4_t a = *(mask);
- comp4_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;
- }
-
- UNcx4_MUL_UNc (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 'C'. Similarly, functions which deal with
- * this difference will have two versions using the same convention.
- */
-
-/*
- * All of the composing functions
- */
-
-static force_inline comp4_t
-combine_mask (const comp4_t *src, const comp4_t *mask, int i)
-{
- comp4_t s, m;
-
- if (mask)
- {
- m = *(mask + i) >> A_SHIFT;
-
- if (!m)
- return 0;
- }
-
- s = *(src + i);
-
- if (mask)
- UNcx4_MUL_UNc (s, m);
-
- return s;
-}
-
-static void
-combine_clear (pixman_implementation_t *imp,
- pixman_op_t op,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- memset (dest, 0, width * sizeof(comp4_t));
-}
-
-static void
-combine_dst (pixman_implementation_t *imp,
- pixman_op_t op,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- return;
-}
-
-static void
-combine_src_u (pixman_implementation_t *imp,
- pixman_op_t op,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- int i;
-
- if (!mask)
- memcpy (dest, src, width * sizeof (comp4_t));
- else
- {
- for (i = 0; i < width; ++i)
- {
- comp4_t s = combine_mask (src, mask, i);
-
- *(dest + i) = s;
- }
- }
-}
-
-/* if the Src is opaque, call combine_src_u */
-static void
-combine_over_u (pixman_implementation_t *imp,
- pixman_op_t op,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- int i;
-
- for (i = 0; i < width; ++i)
- {
- comp4_t s = combine_mask (src, mask, i);
- comp4_t d = *(dest + i);
- comp4_t ia = ALPHA_c (~s);
-
- UNcx4_MUL_UNc_ADD_UNcx4 (d, ia, s);
- *(dest + i) = d;
- }
-}
-
-/* if the Dst is opaque, this is a noop */
-static void
-combine_over_reverse_u (pixman_implementation_t *imp,
- pixman_op_t op,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- int i;
-
- for (i = 0; i < width; ++i)
- {
- comp4_t s = combine_mask (src, mask, i);
- comp4_t d = *(dest + i);
- comp4_t ia = ALPHA_c (~*(dest + i));
- UNcx4_MUL_UNc_ADD_UNcx4 (s, ia, d);
- *(dest + i) = s;
- }
-}
-
-/* if the Dst is opaque, call combine_src_u */
-static void
-combine_in_u (pixman_implementation_t *imp,
- pixman_op_t op,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- int i;
-
- for (i = 0; i < width; ++i)
- {
- comp4_t s = combine_mask (src, mask, i);
- comp4_t a = ALPHA_c (*(dest + i));
- UNcx4_MUL_UNc (s, a);
- *(dest + i) = s;
- }
-}
-
-/* if the Src is opaque, this is a noop */
-static void
-combine_in_reverse_u (pixman_implementation_t *imp,
- pixman_op_t op,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- int i;
-
- for (i = 0; i < width; ++i)
- {
- comp4_t s = combine_mask (src, mask, i);
- comp4_t d = *(dest + i);
- comp4_t a = ALPHA_c (s);
- UNcx4_MUL_UNc (d, a);
- *(dest + i) = d;
- }
-}
-
-/* if the Dst is opaque, call combine_clear */
-static void
-combine_out_u (pixman_implementation_t *imp,
- pixman_op_t op,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- int i;
-
- for (i = 0; i < width; ++i)
- {
- comp4_t s = combine_mask (src, mask, i);
- comp4_t a = ALPHA_c (~*(dest + i));
- UNcx4_MUL_UNc (s, a);
- *(dest + i) = s;
- }
-}
-
-/* if the Src is opaque, call combine_clear */
-static void
-combine_out_reverse_u (pixman_implementation_t *imp,
- pixman_op_t op,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- int i;
-
- for (i = 0; i < width; ++i)
- {
- comp4_t s = combine_mask (src, mask, i);
- comp4_t d = *(dest + i);
- comp4_t a = ALPHA_c (~s);
- UNcx4_MUL_UNc (d, a);
- *(dest + i) = d;
- }
-}
-
-/* if the Src is opaque, call combine_in_u */
-/* if the Dst is opaque, call combine_over_u */
-/* if both the Src and Dst are opaque, call combine_src_u */
-static void
-combine_atop_u (pixman_implementation_t *imp,
- pixman_op_t op,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- int i;
-
- for (i = 0; i < width; ++i)
- {
- comp4_t s = combine_mask (src, mask, i);
- comp4_t d = *(dest + i);
- comp4_t dest_a = ALPHA_c (d);
- comp4_t src_ia = ALPHA_c (~s);
-
- UNcx4_MUL_UNc_ADD_UNcx4_MUL_UNc (s, dest_a, d, src_ia);
- *(dest + i) = s;
- }
-}
-
-/* if the Src is opaque, call combine_over_reverse_u */
-/* if the Dst is opaque, call combine_in_reverse_u */
-/* if both the Src and Dst are opaque, call combine_dst_u */
-static void
-combine_atop_reverse_u (pixman_implementation_t *imp,
- pixman_op_t op,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- int i;
-
- for (i = 0; i < width; ++i)
- {
- comp4_t s = combine_mask (src, mask, i);
- comp4_t d = *(dest + i);
- comp4_t src_a = ALPHA_c (s);
- comp4_t dest_ia = ALPHA_c (~d);
-
- UNcx4_MUL_UNc_ADD_UNcx4_MUL_UNc (s, dest_ia, d, src_a);
- *(dest + i) = s;
- }
-}
-
-/* if the Src is opaque, call combine_over_u */
-/* if the Dst is opaque, call combine_over_reverse_u */
-/* if both the Src and Dst are opaque, call combine_clear */
-static void
-combine_xor_u (pixman_implementation_t *imp,
- pixman_op_t op,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- int i;
-
- for (i = 0; i < width; ++i)
- {
- comp4_t s = combine_mask (src, mask, i);
- comp4_t d = *(dest + i);
- comp4_t src_ia = ALPHA_c (~s);
- comp4_t dest_ia = ALPHA_c (~d);
-
- UNcx4_MUL_UNc_ADD_UNcx4_MUL_UNc (s, dest_ia, d, src_ia);
- *(dest + i) = s;
- }
-}
-
-static void
-combine_add_u (pixman_implementation_t *imp,
- pixman_op_t op,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- int i;
-
- for (i = 0; i < width; ++i)
- {
- comp4_t s = combine_mask (src, mask, i);
- comp4_t d = *(dest + i);
- UNcx4_ADD_UNcx4 (d, s);
- *(dest + i) = d;
- }
-}
-
-/* if the Src is opaque, call combine_add_u */
-/* if the Dst is opaque, call combine_add_u */
-/* if both the Src and Dst are opaque, call combine_add_u */
-static void
-combine_saturate_u (pixman_implementation_t *imp,
- pixman_op_t op,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- int i;
-
- for (i = 0; i < width; ++i)
- {
- comp4_t s = combine_mask (src, mask, i);
- comp4_t d = *(dest + i);
- comp2_t sa, da;
-
- sa = s >> A_SHIFT;
- da = ~d >> A_SHIFT;
- if (sa > da)
- {
- sa = DIV_UNc (da, sa);
- UNcx4_MUL_UNc (s, sa);
- }
- ;
- UNcx4_ADD_UNcx4 (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/acrobat/pdfs/PDF32000_2008.pdf
- * The relevant chapters are 11.3.5 and 11.3.6.
- * 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() being the blend function.
- * Note that OVER is a special case of this operation, using B(Cb, Cs) = Cs
- *
- * These blend modes should match the SVG filter draft specification, as
- * it has been designed to mirror ISO 32000. Note that at the current point
- * no released draft exists that shows this, as the formulas have not been
- * updated yet after the release of ISO 32000.
- *
- * The default implementation here uses the PDF_SEPARABLE_BLEND_MODE and
- * PDF_NON_SEPARABLE_BLEND_MODE macros, which take the blend function as an
- * argument. Note that this implementation operates on premultiplied colors,
- * while the PDF specification does not. Therefore the code uses the formula
- * ar.Cra = (1 – as) . Dca + (1 – ad) . Sca + B(Dca, ad, Sca, as)
- */
-
-/*
- * Multiply
- * B(Dca, ad, Sca, as) = Dca.Sca
- */
-
-static void
-combine_multiply_u (pixman_implementation_t *imp,
- pixman_op_t op,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- int i;
-
- for (i = 0; i < width; ++i)
- {
- comp4_t s = combine_mask (src, mask, i);
- comp4_t d = *(dest + i);
- comp4_t ss = s;
- comp4_t src_ia = ALPHA_c (~s);
- comp4_t dest_ia = ALPHA_c (~d);
-
- UNcx4_MUL_UNc_ADD_UNcx4_MUL_UNc (ss, dest_ia, d, src_ia);
- UNcx4_MUL_UNcx4 (d, s);
- UNcx4_ADD_UNcx4 (d, ss);
-
- *(dest + i) = d;
- }
-}
-
-static void
-combine_multiply_ca (pixman_implementation_t *imp,
- pixman_op_t op,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- int i;
-
- for (i = 0; i < width; ++i)
- {
- comp4_t m = *(mask + i);
- comp4_t s = *(src + i);
- comp4_t d = *(dest + i);
- comp4_t r = d;
- comp4_t dest_ia = ALPHA_c (~d);
-
- combine_mask_value_ca (&s, &m);
-
- UNcx4_MUL_UNcx4_ADD_UNcx4_MUL_UNc (r, ~m, s, dest_ia);
- UNcx4_MUL_UNcx4 (d, s);
- UNcx4_ADD_UNcx4 (r, d);
-
- *(dest + i) = r;
- }
-}
-
-#define PDF_SEPARABLE_BLEND_MODE(name) \
- static void \
- combine_ ## name ## _u (pixman_implementation_t *imp, \
- pixman_op_t op, \
- comp4_t * dest, \
- const comp4_t * src, \
- const comp4_t * mask, \
- int width) \
- { \
- int i; \
- for (i = 0; i < width; ++i) { \
- comp4_t s = combine_mask (src, mask, i); \
- comp4_t d = *(dest + i); \
- comp1_t sa = ALPHA_c (s); \
- comp1_t isa = ~sa; \
- comp1_t da = ALPHA_c (d); \
- comp1_t ida = ~da; \
- comp4_t result; \
- \
- result = d; \
- UNcx4_MUL_UNc_ADD_UNcx4_MUL_UNc (result, isa, s, ida); \
- \
- *(dest + i) = result + \
- (DIV_ONE_UNc (sa * da) << A_SHIFT) + \
- (blend_ ## name (RED_c (d), da, RED_c (s), sa) << R_SHIFT) + \
- (blend_ ## name (GREEN_c (d), da, GREEN_c (s), sa) << G_SHIFT) + \
- (blend_ ## name (BLUE_c (d), da, BLUE_c (s), sa)); \
- } \
- } \
- \
- static void \
- combine_ ## name ## _ca (pixman_implementation_t *imp, \
- pixman_op_t op, \
- comp4_t * dest, \
- const comp4_t * src, \
- const comp4_t * mask, \
- int width) \
- { \
- int i; \
- for (i = 0; i < width; ++i) { \
- comp4_t m = *(mask + i); \
- comp4_t s = *(src + i); \
- comp4_t d = *(dest + i); \
- comp1_t da = ALPHA_c (d); \
- comp1_t ida = ~da; \
- comp4_t result; \
- \
- combine_mask_value_ca (&s, &m); \
- \
- result = d; \
- UNcx4_MUL_UNcx4_ADD_UNcx4_MUL_UNc (result, ~m, s, ida); \
- \
- result += \
- (DIV_ONE_UNc (ALPHA_c (m) * da) << A_SHIFT) + \
- (blend_ ## name (RED_c (d), da, RED_c (s), RED_c (m)) << R_SHIFT) + \
- (blend_ ## name (GREEN_c (d), da, GREEN_c (s), GREEN_c (m)) << G_SHIFT) + \
- (blend_ ## name (BLUE_c (d), da, BLUE_c (s), BLUE_c (m))); \
- \
- *(dest + i) = result; \
- } \
- }
-
-/*
- * Screen
- * B(Dca, ad, Sca, as) = Dca.sa + Sca.da - Dca.Sca
- */
-static inline comp4_t
-blend_screen (comp4_t dca, comp4_t da, comp4_t sca, comp4_t sa)
-{
- return DIV_ONE_UNc (sca * da + dca * sa - sca * dca);
-}
-
-PDF_SEPARABLE_BLEND_MODE (screen)
-
-/*
- * Overlay
- * B(Dca, Da, Sca, Sa) =
- * if 2.Dca < Da
- * 2.Sca.Dca
- * otherwise
- * Sa.Da - 2.(Da - Dca).(Sa - Sca)
- */
-static inline comp4_t
-blend_overlay (comp4_t dca, comp4_t da, comp4_t sca, comp4_t sa)
-{
- comp4_t rca;
-
- if (2 * dca < da)
- rca = 2 * sca * dca;
- else
- rca = sa * da - 2 * (da - dca) * (sa - sca);
- return DIV_ONE_UNc (rca);
-}
-
-PDF_SEPARABLE_BLEND_MODE (overlay)
-
-/*
- * Darken
- * B(Dca, Da, Sca, Sa) = min (Sca.Da, Dca.Sa)
- */
-static inline comp4_t
-blend_darken (comp4_t dca, comp4_t da, comp4_t sca, comp4_t sa)
-{
- comp4_t s, d;
-
- s = sca * da;
- d = dca * sa;
- return DIV_ONE_UNc (s > d ? d : s);
-}
-
-PDF_SEPARABLE_BLEND_MODE (darken)
-
-/*
- * Lighten
- * B(Dca, Da, Sca, Sa) = max (Sca.Da, Dca.Sa)
- */
-static inline comp4_t
-blend_lighten (comp4_t dca, comp4_t da, comp4_t sca, comp4_t sa)
-{
- comp4_t s, d;
-
- s = sca * da;
- d = dca * sa;
- return DIV_ONE_UNc (s > d ? s : d);
-}
-
-PDF_SEPARABLE_BLEND_MODE (lighten)
-
-/*
- * Color dodge
- * B(Dca, Da, Sca, Sa) =
- * if Dca == 0
- * 0
- * if Sca == Sa
- * Sa.Da
- * otherwise
- * Sa.Da. min (1, Dca / Da / (1 - Sca/Sa))
- */
-static inline comp4_t
-blend_color_dodge (comp4_t dca, comp4_t da, comp4_t sca, comp4_t sa)
-{
- if (sca >= sa)
- {
- return dca == 0 ? 0 : DIV_ONE_UNc (sa * da);
- }
- else
- {
- comp4_t rca = dca * sa / (sa - sca);
- return DIV_ONE_UNc (sa * MIN (rca, da));
- }
-}
-
-PDF_SEPARABLE_BLEND_MODE (color_dodge)
-
-/*
- * Color burn
- * B(Dca, Da, Sca, Sa) =
- * if Dca == Da
- * Sa.Da
- * if Sca == 0
- * 0
- * otherwise
- * Sa.Da.(1 - min (1, (1 - Dca/Da).Sa / Sca))
- */
-static inline comp4_t
-blend_color_burn (comp4_t dca, comp4_t da, comp4_t sca, comp4_t sa)
-{
- if (sca == 0)
- {
- return dca < da ? 0 : DIV_ONE_UNc (sa * da);
- }
- else
- {
- comp4_t rca = (da - dca) * sa / sca;
- return DIV_ONE_UNc (sa * (MAX (rca, da) - rca));
- }
-}
-
-PDF_SEPARABLE_BLEND_MODE (color_burn)
-
-/*
- * Hard light
- * B(Dca, Da, Sca, Sa) =
- * if 2.Sca < Sa
- * 2.Sca.Dca
- * otherwise
- * Sa.Da - 2.(Da - Dca).(Sa - Sca)
- */
-static inline comp4_t
-blend_hard_light (comp4_t dca, comp4_t da, comp4_t sca, comp4_t sa)
-{
- if (2 * sca < sa)
- return DIV_ONE_UNc (2 * sca * dca);
- else
- return DIV_ONE_UNc (sa * da - 2 * (da - dca) * (sa - sca));
-}
-
-PDF_SEPARABLE_BLEND_MODE (hard_light)
-
-/*
- * Soft light
- * B(Dca, Da, Sca, Sa) =
- * if (2.Sca <= Sa)
- * Dca.(Sa - (1 - Dca/Da).(2.Sca - Sa))
- * otherwise if Dca.4 <= Da
- * Dca.(Sa + (2.Sca - Sa).((16.Dca/Da - 12).Dca/Da + 3)
- * otherwise
- * (Dca.Sa + (SQRT (Dca/Da).Da - Dca).(2.Sca - Sa))
- */
-static inline comp4_t
-blend_soft_light (comp4_t dca_org,
- comp4_t da_org,
- comp4_t sca_org,
- comp4_t sa_org)
-{
- double dca = dca_org * (1.0 / MASK);
- double da = da_org * (1.0 / MASK);
- double sca = sca_org * (1.0 / MASK);
- double sa = sa_org * (1.0 / MASK);
- double rca;
-
- if (2 * sca < sa)
- {
- if (da == 0)
- rca = dca * sa;
- else
- rca = dca * sa - dca * (da - dca) * (sa - 2 * sca) / da;
- }
- else if (da == 0)
- {
- rca = 0;
- }
- else if (4 * dca <= da)
- {
- rca = dca * sa +
- (2 * sca - sa) * dca * ((16 * dca / da - 12) * dca / da + 3);
- }
- else
- {
- rca = dca * sa + (sqrt (dca * da) - dca) * (2 * sca - sa);
- }
- return rca * MASK + 0.5;
-}
-
-PDF_SEPARABLE_BLEND_MODE (soft_light)
-
-/*
- * Difference
- * B(Dca, Da, Sca, Sa) = abs (Dca.Sa - Sca.Da)
- */
-static inline comp4_t
-blend_difference (comp4_t dca, comp4_t da, comp4_t sca, comp4_t sa)
-{
- comp4_t dcasa = dca * sa;
- comp4_t scada = sca * da;
-
- if (scada < dcasa)
- return DIV_ONE_UNc (dcasa - scada);
- else
- return DIV_ONE_UNc (scada - dcasa);
-}
-
-PDF_SEPARABLE_BLEND_MODE (difference)
-
-/*
- * Exclusion
- * B(Dca, Da, Sca, Sa) = (Sca.Da + Dca.Sa - 2.Sca.Dca)
- */
-
-/* This can be made faster by writing it directly and not using
- * PDF_SEPARABLE_BLEND_MODE, but that's a performance optimization */
-
-static inline comp4_t
-blend_exclusion (comp4_t dca, comp4_t da, comp4_t sca, comp4_t sa)
-{
- return DIV_ONE_UNc (sca * da + dca * sa - 2 * dca * sca);
-}
-
-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, ra);
- *
- * 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 they 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, rs)
- *
- */
-
-/* So, for the non-separable PDF blend modes, we have (using s, d for
- * non-premultiplied colors, and S, D for premultiplied:
- *
- * Color:
- *
- * a_s * a_d * B(s, d)
- * = a_s * a_d * set_lum (S/a_s, LUM (D/a_d), 1)
- * = set_lum (S * a_d, a_s * LUM (D), a_s * a_d)
- *
- *
- * Luminosity:
- *
- * a_s * a_d * B(s, d)
- * = a_s * a_d * set_lum (D/a_d, LUM(S/a_s), 1)
- * = set_lum (a_s * D, a_d * LUM(S), a_s * a_d)
- *
- *
- * Saturation:
- *
- * a_s * a_d * B(s, d)
- * = a_s * a_d * set_lum (set_sat (D/a_d, SAT (S/a_s)), LUM (D/a_d), 1)
- * = set_lum (a_s * a_d * set_sat (D/a_d, SAT (S/a_s)),
- * a_s * LUM (D), a_s * a_d)
- * = set_lum (set_sat (a_s * D, a_d * SAT (S), a_s * LUM (D), a_s * a_d))
- *
- * Hue:
- *
- * a_s * a_d * B(s, d)
- * = a_s * a_d * set_lum (set_sat (S/a_s, SAT (D/a_d)), LUM (D/a_d), 1)
- * = a_s * a_d * set_lum (set_sat (a_d * S, a_s * SAT (D)),
- * a_s * LUM (D), a_s * a_d)
- *
- */
-
-#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, \
- comp4_t *dest, \
- const comp4_t *src, \
- const comp4_t *mask, \
- int width) \
- { \
- int i; \
- for (i = 0; i < width; ++i) \
- { \
- comp4_t s = combine_mask (src, mask, i); \
- comp4_t d = *(dest + i); \
- comp1_t sa = ALPHA_c (s); \
- comp1_t isa = ~sa; \
- comp1_t da = ALPHA_c (d); \
- comp1_t ida = ~da; \
- comp4_t result; \
- comp4_t sc[3], dc[3], c[3]; \
- \
- result = d; \
- UNcx4_MUL_UNc_ADD_UNcx4_MUL_UNc (result, isa, s, ida); \
- dc[0] = RED_c (d); \
- sc[0] = RED_c (s); \
- dc[1] = GREEN_c (d); \
- sc[1] = GREEN_c (s); \
- dc[2] = BLUE_c (d); \
- sc[2] = BLUE_c (s); \
- blend_ ## name (c, dc, da, sc, sa); \
- \
- *(dest + i) = result + \
- (DIV_ONE_UNc (sa * da) << A_SHIFT) + \
- (DIV_ONE_UNc (c[0]) << R_SHIFT) + \
- (DIV_ONE_UNc (c[1]) << G_SHIFT) + \
- (DIV_ONE_UNc (c[2])); \
- } \
- }
-
-static void
-set_lum (comp4_t dest[3], comp4_t src[3], comp4_t sa, comp4_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)
- {
- 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)
- {
- 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 (comp4_t dest[3], comp4_t src[3], comp4_t sat)
-{
- int id[3];
- comp4_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:
- * B(Cb, Cs) = set_lum (set_sat (Cs, SAT (Cb)), LUM (Cb))
- */
-static inline void
-blend_hsl_hue (comp4_t c[3],
- comp4_t dc[3],
- comp4_t da,
- comp4_t sc[3],
- comp4_t sa)
-{
- c[0] = sc[0] * da;
- c[1] = sc[1] * da;
- c[2] = sc[2] * da;
- set_sat (c, c, SAT (dc) * sa);
- set_lum (c, c, sa * da, LUM (dc) * sa);
-}
-
-PDF_NON_SEPARABLE_BLEND_MODE (hsl_hue)
-
-/*
- * Saturation:
- * B(Cb, Cs) = set_lum (set_sat (Cb, SAT (Cs)), LUM (Cb))
- */
-static inline void
-blend_hsl_saturation (comp4_t c[3],
- comp4_t dc[3],
- comp4_t da,
- comp4_t sc[3],
- comp4_t sa)
-{
- c[0] = dc[0] * sa;
- c[1] = dc[1] * sa;
- c[2] = dc[2] * sa;
- set_sat (c, c, SAT (sc) * da);
- set_lum (c, c, sa * da, LUM (dc) * sa);
-}
-
-PDF_NON_SEPARABLE_BLEND_MODE (hsl_saturation)
-
-/*
- * Color:
- * B(Cb, Cs) = set_lum (Cs, LUM (Cb))
- */
-static inline void
-blend_hsl_color (comp4_t c[3],
- comp4_t dc[3],
- comp4_t da,
- comp4_t sc[3],
- comp4_t sa)
-{
- c[0] = sc[0] * da;
- c[1] = sc[1] * da;
- c[2] = sc[2] * da;
- set_lum (c, c, sa * da, LUM (dc) * sa);
-}
-
-PDF_NON_SEPARABLE_BLEND_MODE (hsl_color)
-
-/*
- * Luminosity:
- * B(Cb, Cs) = set_lum (Cb, LUM (Cs))
- */
-static inline void
-blend_hsl_luminosity (comp4_t c[3],
- comp4_t dc[3],
- comp4_t da,
- comp4_t sc[3],
- comp4_t sa)
-{
- c[0] = dc[0] * sa;
- c[1] = dc[1] * sa;
- c[2] = dc[2] * sa;
- set_lum (c, c, sa * da, LUM (sc) * da);
-}
-
-PDF_NON_SEPARABLE_BLEND_MODE (hsl_luminosity)
-
-#undef SAT
-#undef LUM
-#undef CH_MAX
-#undef CH_MIN
-#undef PDF_NON_SEPARABLE_BLEND_MODE
-
-/* Overlay
- *
- * All of the disjoint 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)
- */
-
-#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 comp1_t
-combine_disjoint_out_part (comp1_t a, comp1_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_UNc (b, a); /* (1-b) / a */
-}
-
-/* portion covered by both a and b */
-static comp1_t
-combine_disjoint_in_part (comp1_t a, comp1_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_UNc(b, a); /* 1 - (1-b) / a */
-}
-
-/* portion covered by a but not b */
-static comp1_t
-combine_conjoint_out_part (comp1_t a, comp1_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_UNc(b, a); /* 1 - b/a */
-}
-
-/* portion covered by both a and b */
-static comp1_t
-combine_conjoint_in_part (comp1_t a, comp1_t b)
-{
- /* min (1,b/a) */
-
- if (b >= a) /* b >= a -> b/a >= 1 */
- return MASK; /* 1 */
- return DIV_UNc (b, a); /* b/a */
-}
-
-#define GET_COMP(v, i) ((comp2_t) (comp1_t) ((v) >> i))
-
-#define ADD(x, y, i, t) \
- ((t) = GET_COMP (x, i) + GET_COMP (y, i), \
- (comp4_t) ((comp1_t) ((t) | (0 - ((t) >> G_SHIFT)))) << (i))
-
-#define GENERIC(x, y, i, ax, ay, t, u, v) \
- ((t) = (MUL_UNc (GET_COMP (y, i), ay, (u)) + \
- MUL_UNc (GET_COMP (x, i), ax, (v))), \
- (comp4_t) ((comp1_t) ((t) | \
- (0 - ((t) >> G_SHIFT)))) << (i))
-
-static void
-combine_disjoint_general_u (comp4_t * dest,
- const comp4_t *src,
- const comp4_t *mask,
- int width,
- comp1_t combine)
-{
- int i;
-
- for (i = 0; i < width; ++i)
- {
- comp4_t s = combine_mask (src, mask, i);
- comp4_t d = *(dest + i);
- comp4_t m, n, o, p;
- comp2_t Fa, Fb, t, u, v;
- comp1_t sa = s >> A_SHIFT;
- comp1_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- int i;
-
- for (i = 0; i < width; ++i)
- {
- comp4_t s = combine_mask (src, mask, i);
- comp2_t a = s >> A_SHIFT;
-
- if (s != 0x00)
- {
- comp4_t d = *(dest + i);
- a = combine_disjoint_out_part (d >> A_SHIFT, a);
- UNcx4_MUL_UNc_ADD_UNcx4 (d, a, s);
-
- *(dest + i) = d;
- }
- }
-}
-
-static void
-combine_disjoint_in_u (pixman_implementation_t *imp,
- pixman_op_t op,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- combine_disjoint_general_u (dest, src, mask, width, COMBINE_XOR);
-}
-
-static void
-combine_conjoint_general_u (comp4_t * dest,
- const comp4_t *src,
- const comp4_t *mask,
- int width,
- comp1_t combine)
-{
- int i;
-
- for (i = 0; i < width; ++i)
- {
- comp4_t s = combine_mask (src, mask, i);
- comp4_t d = *(dest + i);
- comp4_t m, n, o, p;
- comp2_t Fa, Fb, t, u, v;
- comp1_t sa = s >> A_SHIFT;
- comp1_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- combine_conjoint_general_u (dest, src, mask, width, COMBINE_XOR);
-}
-
-/************************************************************************/
-/*********************** Per Channel functions **************************/
-/************************************************************************/
-
-static void
-combine_clear_ca (pixman_implementation_t *imp,
- pixman_op_t op,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- memset (dest, 0, width * sizeof(comp4_t));
-}
-
-static void
-combine_src_ca (pixman_implementation_t *imp,
- pixman_op_t op,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- int i;
-
- for (i = 0; i < width; ++i)
- {
- comp4_t s = *(src + i);
- comp4_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- int i;
-
- for (i = 0; i < width; ++i)
- {
- comp4_t s = *(src + i);
- comp4_t m = *(mask + i);
- comp4_t a;
-
- combine_mask_ca (&s, &m);
-
- a = ~m;
- if (a)
- {
- comp4_t d = *(dest + i);
- UNcx4_MUL_UNcx4_ADD_UNcx4 (d, a, s);
- s = d;
- }
-
- *(dest + i) = s;
- }
-}
-
-static void
-combine_over_reverse_ca (pixman_implementation_t *imp,
- pixman_op_t op,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- int i;
-
- for (i = 0; i < width; ++i)
- {
- comp4_t d = *(dest + i);
- comp4_t a = ~d >> A_SHIFT;
-
- if (a)
- {
- comp4_t s = *(src + i);
- comp4_t m = *(mask + i);
-
- UNcx4_MUL_UNcx4 (s, m);
- UNcx4_MUL_UNc_ADD_UNcx4 (s, a, d);
-
- *(dest + i) = s;
- }
- }
-}
-
-static void
-combine_in_ca (pixman_implementation_t *imp,
- pixman_op_t op,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- int i;
-
- for (i = 0; i < width; ++i)
- {
- comp4_t d = *(dest + i);
- comp2_t a = d >> A_SHIFT;
- comp4_t s = 0;
-
- if (a)
- {
- comp4_t m = *(mask + i);
-
- s = *(src + i);
- combine_mask_value_ca (&s, &m);
-
- if (a != MASK)
- UNcx4_MUL_UNc (s, a);
- }
-
- *(dest + i) = s;
- }
-}
-
-static void
-combine_in_reverse_ca (pixman_implementation_t *imp,
- pixman_op_t op,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- int i;
-
- for (i = 0; i < width; ++i)
- {
- comp4_t s = *(src + i);
- comp4_t m = *(mask + i);
- comp4_t a;
-
- combine_mask_alpha_ca (&s, &m);
-
- a = m;
- if (a != ~0)
- {
- comp4_t d = 0;
-
- if (a)
- {
- d = *(dest + i);
- UNcx4_MUL_UNcx4 (d, a);
- }
-
- *(dest + i) = d;
- }
- }
-}
-
-static void
-combine_out_ca (pixman_implementation_t *imp,
- pixman_op_t op,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- int i;
-
- for (i = 0; i < width; ++i)
- {
- comp4_t d = *(dest + i);
- comp2_t a = ~d >> A_SHIFT;
- comp4_t s = 0;
-
- if (a)
- {
- comp4_t m = *(mask + i);
-
- s = *(src + i);
- combine_mask_value_ca (&s, &m);
-
- if (a != MASK)
- UNcx4_MUL_UNc (s, a);
- }
-
- *(dest + i) = s;
- }
-}
-
-static void
-combine_out_reverse_ca (pixman_implementation_t *imp,
- pixman_op_t op,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- int i;
-
- for (i = 0; i < width; ++i)
- {
- comp4_t s = *(src + i);
- comp4_t m = *(mask + i);
- comp4_t a;
-
- combine_mask_alpha_ca (&s, &m);
-
- a = ~m;
- if (a != ~0)
- {
- comp4_t d = 0;
-
- if (a)
- {
- d = *(dest + i);
- UNcx4_MUL_UNcx4 (d, a);
- }
-
- *(dest + i) = d;
- }
- }
-}
-
-static void
-combine_atop_ca (pixman_implementation_t *imp,
- pixman_op_t op,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- int i;
-
- for (i = 0; i < width; ++i)
- {
- comp4_t d = *(dest + i);
- comp4_t s = *(src + i);
- comp4_t m = *(mask + i);
- comp4_t ad;
- comp2_t as = d >> A_SHIFT;
-
- combine_mask_ca (&s, &m);
-
- ad = ~m;
-
- UNcx4_MUL_UNcx4_ADD_UNcx4_MUL_UNc (d, ad, s, as);
-
- *(dest + i) = d;
- }
-}
-
-static void
-combine_atop_reverse_ca (pixman_implementation_t *imp,
- pixman_op_t op,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- int i;
-
- for (i = 0; i < width; ++i)
- {
- comp4_t d = *(dest + i);
- comp4_t s = *(src + i);
- comp4_t m = *(mask + i);
- comp4_t ad;
- comp2_t as = ~d >> A_SHIFT;
-
- combine_mask_ca (&s, &m);
-
- ad = m;
-
- UNcx4_MUL_UNcx4_ADD_UNcx4_MUL_UNc (d, ad, s, as);
-
- *(dest + i) = d;
- }
-}
-
-static void
-combine_xor_ca (pixman_implementation_t *imp,
- pixman_op_t op,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- int i;
-
- for (i = 0; i < width; ++i)
- {
- comp4_t d = *(dest + i);
- comp4_t s = *(src + i);
- comp4_t m = *(mask + i);
- comp4_t ad;
- comp2_t as = ~d >> A_SHIFT;
-
- combine_mask_ca (&s, &m);
-
- ad = ~m;
-
- UNcx4_MUL_UNcx4_ADD_UNcx4_MUL_UNc (d, ad, s, as);
-
- *(dest + i) = d;
- }
-}
-
-static void
-combine_add_ca (pixman_implementation_t *imp,
- pixman_op_t op,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- int i;
-
- for (i = 0; i < width; ++i)
- {
- comp4_t s = *(src + i);
- comp4_t m = *(mask + i);
- comp4_t d = *(dest + i);
-
- combine_mask_value_ca (&s, &m);
-
- UNcx4_ADD_UNcx4 (d, s);
-
- *(dest + i) = d;
- }
-}
-
-static void
-combine_saturate_ca (pixman_implementation_t *imp,
- pixman_op_t op,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- int i;
-
- for (i = 0; i < width; ++i)
- {
- comp4_t s, d;
- comp2_t sa, sr, sg, sb, da;
- comp2_t t, u, v;
- comp4_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 (comp4_t * dest,
- const comp4_t *src,
- const comp4_t *mask,
- int width,
- comp1_t combine)
-{
- int i;
-
- for (i = 0; i < width; ++i)
- {
- comp4_t s, d;
- comp4_t m, n, o, p;
- comp4_t Fa, Fb;
- comp2_t t, u, v;
- comp4_t sa;
- comp1_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 = (comp4_t)combine_disjoint_out_part ((comp1_t) (sa >> 0), da);
- n = (comp4_t)combine_disjoint_out_part ((comp1_t) (sa >> G_SHIFT), da) << G_SHIFT;
- o = (comp4_t)combine_disjoint_out_part ((comp1_t) (sa >> R_SHIFT), da) << R_SHIFT;
- p = (comp4_t)combine_disjoint_out_part ((comp1_t) (sa >> A_SHIFT), da) << A_SHIFT;
- Fa = m | n | o | p;
- break;
-
- case COMBINE_A_IN:
- m = (comp4_t)combine_disjoint_in_part ((comp1_t) (sa >> 0), da);
- n = (comp4_t)combine_disjoint_in_part ((comp1_t) (sa >> G_SHIFT), da) << G_SHIFT;
- o = (comp4_t)combine_disjoint_in_part ((comp1_t) (sa >> R_SHIFT), da) << R_SHIFT;
- p = (comp4_t)combine_disjoint_in_part ((comp1_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 = (comp4_t)combine_disjoint_out_part (da, (comp1_t) (sa >> 0));
- n = (comp4_t)combine_disjoint_out_part (da, (comp1_t) (sa >> G_SHIFT)) << G_SHIFT;
- o = (comp4_t)combine_disjoint_out_part (da, (comp1_t) (sa >> R_SHIFT)) << R_SHIFT;
- p = (comp4_t)combine_disjoint_out_part (da, (comp1_t) (sa >> A_SHIFT)) << A_SHIFT;
- Fb = m | n | o | p;
- break;
-
- case COMBINE_B_IN:
- m = (comp4_t)combine_disjoint_in_part (da, (comp1_t) (sa >> 0));
- n = (comp4_t)combine_disjoint_in_part (da, (comp1_t) (sa >> G_SHIFT)) << G_SHIFT;
- o = (comp4_t)combine_disjoint_in_part (da, (comp1_t) (sa >> R_SHIFT)) << R_SHIFT;
- p = (comp4_t)combine_disjoint_in_part (da, (comp1_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- combine_disjoint_general_ca (dest, src, mask, width, COMBINE_XOR);
-}
-
-static void
-combine_conjoint_general_ca (comp4_t * dest,
- const comp4_t *src,
- const comp4_t *mask,
- int width,
- comp1_t combine)
-{
- int i;
-
- for (i = 0; i < width; ++i)
- {
- comp4_t s, d;
- comp4_t m, n, o, p;
- comp4_t Fa, Fb;
- comp2_t t, u, v;
- comp4_t sa;
- comp1_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 = (comp4_t)combine_conjoint_out_part ((comp1_t) (sa >> 0), da);
- n = (comp4_t)combine_conjoint_out_part ((comp1_t) (sa >> G_SHIFT), da) << G_SHIFT;
- o = (comp4_t)combine_conjoint_out_part ((comp1_t) (sa >> R_SHIFT), da) << R_SHIFT;
- p = (comp4_t)combine_conjoint_out_part ((comp1_t) (sa >> A_SHIFT), da) << A_SHIFT;
- Fa = m | n | o | p;
- break;
-
- case COMBINE_A_IN:
- m = (comp4_t)combine_conjoint_in_part ((comp1_t) (sa >> 0), da);
- n = (comp4_t)combine_conjoint_in_part ((comp1_t) (sa >> G_SHIFT), da) << G_SHIFT;
- o = (comp4_t)combine_conjoint_in_part ((comp1_t) (sa >> R_SHIFT), da) << R_SHIFT;
- p = (comp4_t)combine_conjoint_in_part ((comp1_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 = (comp4_t)combine_conjoint_out_part (da, (comp1_t) (sa >> 0));
- n = (comp4_t)combine_conjoint_out_part (da, (comp1_t) (sa >> G_SHIFT)) << G_SHIFT;
- o = (comp4_t)combine_conjoint_out_part (da, (comp1_t) (sa >> R_SHIFT)) << R_SHIFT;
- p = (comp4_t)combine_conjoint_out_part (da, (comp1_t) (sa >> A_SHIFT)) << A_SHIFT;
- Fb = m | n | o | p;
- break;
-
- case COMBINE_B_IN:
- m = (comp4_t)combine_conjoint_in_part (da, (comp1_t) (sa >> 0));
- n = (comp4_t)combine_conjoint_in_part (da, (comp1_t) (sa >> G_SHIFT)) << G_SHIFT;
- o = (comp4_t)combine_conjoint_in_part (da, (comp1_t) (sa >> R_SHIFT)) << R_SHIFT;
- p = (comp4_t)combine_conjoint_in_part (da, (comp1_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_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,
- comp4_t * dest,
- const comp4_t * src,
- const comp4_t * mask,
- int width)
-{
- combine_conjoint_general_ca (dest, src, mask, width, COMBINE_XOR);
-}
-
-void
-_pixman_setup_combiner_functions_width (pixman_implementation_t *imp)
-{
- /* Unified alpha */
- imp->combine_width[PIXMAN_OP_CLEAR] = combine_clear;
- imp->combine_width[PIXMAN_OP_SRC] = combine_src_u;
- imp->combine_width[PIXMAN_OP_DST] = combine_dst;
- imp->combine_width[PIXMAN_OP_OVER] = combine_over_u;
- imp->combine_width[PIXMAN_OP_OVER_REVERSE] = combine_over_reverse_u;
- imp->combine_width[PIXMAN_OP_IN] = combine_in_u;
- imp->combine_width[PIXMAN_OP_IN_REVERSE] = combine_in_reverse_u;
- imp->combine_width[PIXMAN_OP_OUT] = combine_out_u;
- imp->combine_width[PIXMAN_OP_OUT_REVERSE] = combine_out_reverse_u;
- imp->combine_width[PIXMAN_OP_ATOP] = combine_atop_u;
- imp->combine_width[PIXMAN_OP_ATOP_REVERSE] = combine_atop_reverse_u;
- imp->combine_width[PIXMAN_OP_XOR] = combine_xor_u;
- imp->combine_width[PIXMAN_OP_ADD] = combine_add_u;
- imp->combine_width[PIXMAN_OP_SATURATE] = combine_saturate_u;
-
- /* Disjoint, unified */
- imp->combine_width[PIXMAN_OP_DISJOINT_CLEAR] = combine_clear;
- imp->combine_width[PIXMAN_OP_DISJOINT_SRC] = combine_src_u;
- imp->combine_width[PIXMAN_OP_DISJOINT_DST] = combine_dst;
- imp->combine_width[PIXMAN_OP_DISJOINT_OVER] = combine_disjoint_over_u;
- imp->combine_width[PIXMAN_OP_DISJOINT_OVER_REVERSE] = combine_saturate_u;
- imp->combine_width[PIXMAN_OP_DISJOINT_IN] = combine_disjoint_in_u;
- imp->combine_width[PIXMAN_OP_DISJOINT_IN_REVERSE] = combine_disjoint_in_reverse_u;
- imp->combine_width[PIXMAN_OP_DISJOINT_OUT] = combine_disjoint_out_u;
- imp->combine_width[PIXMAN_OP_DISJOINT_OUT_REVERSE] = combine_disjoint_out_reverse_u;
- imp->combine_width[PIXMAN_OP_DISJOINT_ATOP] = combine_disjoint_atop_u;
- imp->combine_width[PIXMAN_OP_DISJOINT_ATOP_REVERSE] = combine_disjoint_atop_reverse_u;
- imp->combine_width[PIXMAN_OP_DISJOINT_XOR] = combine_disjoint_xor_u;
-
- /* Conjoint, unified */
- imp->combine_width[PIXMAN_OP_CONJOINT_CLEAR] = combine_clear;
- imp->combine_width[PIXMAN_OP_CONJOINT_SRC] = combine_src_u;
- imp->combine_width[PIXMAN_OP_CONJOINT_DST] = combine_dst;
- imp->combine_width[PIXMAN_OP_CONJOINT_OVER] = combine_conjoint_over_u;
- imp->combine_width[PIXMAN_OP_CONJOINT_OVER_REVERSE] = combine_conjoint_over_reverse_u;
- imp->combine_width[PIXMAN_OP_CONJOINT_IN] = combine_conjoint_in_u;
- imp->combine_width[PIXMAN_OP_CONJOINT_IN_REVERSE] = combine_conjoint_in_reverse_u;
- imp->combine_width[PIXMAN_OP_CONJOINT_OUT] = combine_conjoint_out_u;
- imp->combine_width[PIXMAN_OP_CONJOINT_OUT_REVERSE] = combine_conjoint_out_reverse_u;
- imp->combine_width[PIXMAN_OP_CONJOINT_ATOP] = combine_conjoint_atop_u;
- imp->combine_width[PIXMAN_OP_CONJOINT_ATOP_REVERSE] = combine_conjoint_atop_reverse_u;
- imp->combine_width[PIXMAN_OP_CONJOINT_XOR] = combine_conjoint_xor_u;
-
- imp->combine_width[PIXMAN_OP_MULTIPLY] = combine_multiply_u;
- imp->combine_width[PIXMAN_OP_SCREEN] = combine_screen_u;
- imp->combine_width[PIXMAN_OP_OVERLAY] = combine_overlay_u;
- imp->combine_width[PIXMAN_OP_DARKEN] = combine_darken_u;
- imp->combine_width[PIXMAN_OP_LIGHTEN] = combine_lighten_u;
- imp->combine_width[PIXMAN_OP_COLOR_DODGE] = combine_color_dodge_u;
- imp->combine_width[PIXMAN_OP_COLOR_BURN] = combine_color_burn_u;
- imp->combine_width[PIXMAN_OP_HARD_LIGHT] = combine_hard_light_u;
- imp->combine_width[PIXMAN_OP_SOFT_LIGHT] = combine_soft_light_u;
- imp->combine_width[PIXMAN_OP_DIFFERENCE] = combine_difference_u;
- imp->combine_width[PIXMAN_OP_EXCLUSION] = combine_exclusion_u;
- imp->combine_width[PIXMAN_OP_HSL_HUE] = combine_hsl_hue_u;
- imp->combine_width[PIXMAN_OP_HSL_SATURATION] = combine_hsl_saturation_u;
- imp->combine_width[PIXMAN_OP_HSL_COLOR] = combine_hsl_color_u;
- imp->combine_width[PIXMAN_OP_HSL_LUMINOSITY] = combine_hsl_luminosity_u;
-
- /* Component alpha combiners */
- imp->combine_width_ca[PIXMAN_OP_CLEAR] = combine_clear_ca;
- imp->combine_width_ca[PIXMAN_OP_SRC] = combine_src_ca;
- /* dest */
- imp->combine_width_ca[PIXMAN_OP_OVER] = combine_over_ca;
- imp->combine_width_ca[PIXMAN_OP_OVER_REVERSE] = combine_over_reverse_ca;
- imp->combine_width_ca[PIXMAN_OP_IN] = combine_in_ca;
- imp->combine_width_ca[PIXMAN_OP_IN_REVERSE] = combine_in_reverse_ca;
- imp->combine_width_ca[PIXMAN_OP_OUT] = combine_out_ca;
- imp->combine_width_ca[PIXMAN_OP_OUT_REVERSE] = combine_out_reverse_ca;
- imp->combine_width_ca[PIXMAN_OP_ATOP] = combine_atop_ca;
- imp->combine_width_ca[PIXMAN_OP_ATOP_REVERSE] = combine_atop_reverse_ca;
- imp->combine_width_ca[PIXMAN_OP_XOR] = combine_xor_ca;
- imp->combine_width_ca[PIXMAN_OP_ADD] = combine_add_ca;
- imp->combine_width_ca[PIXMAN_OP_SATURATE] = combine_saturate_ca;
-
- /* Disjoint CA */
- imp->combine_width_ca[PIXMAN_OP_DISJOINT_CLEAR] = combine_clear_ca;
- imp->combine_width_ca[PIXMAN_OP_DISJOINT_SRC] = combine_src_ca;
- imp->combine_width_ca[PIXMAN_OP_DISJOINT_DST] = combine_dst;
- imp->combine_width_ca[PIXMAN_OP_DISJOINT_OVER] = combine_disjoint_over_ca;
- imp->combine_width_ca[PIXMAN_OP_DISJOINT_OVER_REVERSE] = combine_saturate_ca;
- imp->combine_width_ca[PIXMAN_OP_DISJOINT_IN] = combine_disjoint_in_ca;
- imp->combine_width_ca[PIXMAN_OP_DISJOINT_IN_REVERSE] = combine_disjoint_in_reverse_ca;
- imp->combine_width_ca[PIXMAN_OP_DISJOINT_OUT] = combine_disjoint_out_ca;
- imp->combine_width_ca[PIXMAN_OP_DISJOINT_OUT_REVERSE] = combine_disjoint_out_reverse_ca;
- imp->combine_width_ca[PIXMAN_OP_DISJOINT_ATOP] = combine_disjoint_atop_ca;
- imp->combine_width_ca[PIXMAN_OP_DISJOINT_ATOP_REVERSE] = combine_disjoint_atop_reverse_ca;
- imp->combine_width_ca[PIXMAN_OP_DISJOINT_XOR] = combine_disjoint_xor_ca;
-
- /* Conjoint CA */
- imp->combine_width_ca[PIXMAN_OP_CONJOINT_CLEAR] = combine_clear_ca;
- imp->combine_width_ca[PIXMAN_OP_CONJOINT_SRC] = combine_src_ca;
- imp->combine_width_ca[PIXMAN_OP_CONJOINT_DST] = combine_dst;
- imp->combine_width_ca[PIXMAN_OP_CONJOINT_OVER] = combine_conjoint_over_ca;
- imp->combine_width_ca[PIXMAN_OP_CONJOINT_OVER_REVERSE] = combine_conjoint_over_reverse_ca;
- imp->combine_width_ca[PIXMAN_OP_CONJOINT_IN] = combine_conjoint_in_ca;
- imp->combine_width_ca[PIXMAN_OP_CONJOINT_IN_REVERSE] = combine_conjoint_in_reverse_ca;
- imp->combine_width_ca[PIXMAN_OP_CONJOINT_OUT] = combine_conjoint_out_ca;
- imp->combine_width_ca[PIXMAN_OP_CONJOINT_OUT_REVERSE] = combine_conjoint_out_reverse_ca;
- imp->combine_width_ca[PIXMAN_OP_CONJOINT_ATOP] = combine_conjoint_atop_ca;
- imp->combine_width_ca[PIXMAN_OP_CONJOINT_ATOP_REVERSE] = combine_conjoint_atop_reverse_ca;
- imp->combine_width_ca[PIXMAN_OP_CONJOINT_XOR] = combine_conjoint_xor_ca;
-
- imp->combine_width_ca[PIXMAN_OP_MULTIPLY] = combine_multiply_ca;
- imp->combine_width_ca[PIXMAN_OP_SCREEN] = combine_screen_ca;
- imp->combine_width_ca[PIXMAN_OP_OVERLAY] = combine_overlay_ca;
- imp->combine_width_ca[PIXMAN_OP_DARKEN] = combine_darken_ca;
- imp->combine_width_ca[PIXMAN_OP_LIGHTEN] = combine_lighten_ca;
- imp->combine_width_ca[PIXMAN_OP_COLOR_DODGE] = combine_color_dodge_ca;
- imp->combine_width_ca[PIXMAN_OP_COLOR_BURN] = combine_color_burn_ca;
- imp->combine_width_ca[PIXMAN_OP_HARD_LIGHT] = combine_hard_light_ca;
- imp->combine_width_ca[PIXMAN_OP_SOFT_LIGHT] = combine_soft_light_ca;
- imp->combine_width_ca[PIXMAN_OP_DIFFERENCE] = combine_difference_ca;
- imp->combine_width_ca[PIXMAN_OP_EXCLUSION] = combine_exclusion_ca;
-
- /* It is not clear that these make sense, so make them noops for now */
- imp->combine_width_ca[PIXMAN_OP_HSL_HUE] = combine_dst;
- imp->combine_width_ca[PIXMAN_OP_HSL_SATURATION] = combine_dst;
- imp->combine_width_ca[PIXMAN_OP_HSL_COLOR] = combine_dst;
- imp->combine_width_ca[PIXMAN_OP_HSL_LUMINOSITY] = combine_dst;
-}
-
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <math.h>
+#include <string.h>
+
+#include "pixman-private.h"
+
+#include "pixman-combine.h"
+
+/*** per channel helper functions ***/
+
+static void
+combine_mask_ca (comp4_t *src, comp4_t *mask)
+{
+ comp4_t a = *mask;
+
+ comp4_t x;
+ comp2_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;
+ UNcx4_MUL_UNcx4 (x, a);
+ *(src) = x;
+
+ UNcx4_MUL_UNc (a, xa);
+ *(mask) = a;
+}
+
+static void
+combine_mask_value_ca (comp4_t *src, const comp4_t *mask)
+{
+ comp4_t a = *mask;
+ comp4_t x;
+
+ if (!a)
+ {
+ *(src) = 0;
+ return;
+ }
+
+ if (a == ~0)
+ return;
+
+ x = *(src);
+ UNcx4_MUL_UNcx4 (x, a);
+ *(src) = x;
+}
+
+static void
+combine_mask_alpha_ca (const comp4_t *src, comp4_t *mask)
+{
+ comp4_t a = *(mask);
+ comp4_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;
+ }
+
+ UNcx4_MUL_UNc (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 'C'. Similarly, functions which deal with
+ * this difference will have two versions using the same convention.
+ */
+
+/*
+ * All of the composing functions
+ */
+
+static force_inline comp4_t
+combine_mask (const comp4_t *src, const comp4_t *mask, int i)
+{
+ comp4_t s, m;
+
+ if (mask)
+ {
+ m = *(mask + i) >> A_SHIFT;
+
+ if (!m)
+ return 0;
+ }
+
+ s = *(src + i);
+
+ if (mask)
+ UNcx4_MUL_UNc (s, m);
+
+ return s;
+}
+
+static void
+combine_clear (pixman_implementation_t *imp,
+ pixman_op_t op,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ memset (dest, 0, width * sizeof(comp4_t));
+}
+
+static void
+combine_dst (pixman_implementation_t *imp,
+ pixman_op_t op,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ return;
+}
+
+static void
+combine_src_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ int i;
+
+ if (!mask)
+ memcpy (dest, src, width * sizeof (comp4_t));
+ else
+ {
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t s = combine_mask (src, mask, i);
+
+ *(dest + i) = s;
+ }
+ }
+}
+
+/* if the Src is opaque, call combine_src_u */
+static void
+combine_over_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t s = combine_mask (src, mask, i);
+ comp4_t d = *(dest + i);
+ comp4_t ia = ALPHA_c (~s);
+
+ UNcx4_MUL_UNc_ADD_UNcx4 (d, ia, s);
+ *(dest + i) = d;
+ }
+}
+
+/* if the Dst is opaque, this is a noop */
+static void
+combine_over_reverse_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t s = combine_mask (src, mask, i);
+ comp4_t d = *(dest + i);
+ comp4_t ia = ALPHA_c (~*(dest + i));
+ UNcx4_MUL_UNc_ADD_UNcx4 (s, ia, d);
+ *(dest + i) = s;
+ }
+}
+
+/* if the Dst is opaque, call combine_src_u */
+static void
+combine_in_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t s = combine_mask (src, mask, i);
+ comp4_t a = ALPHA_c (*(dest + i));
+ UNcx4_MUL_UNc (s, a);
+ *(dest + i) = s;
+ }
+}
+
+/* if the Src is opaque, this is a noop */
+static void
+combine_in_reverse_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t s = combine_mask (src, mask, i);
+ comp4_t d = *(dest + i);
+ comp4_t a = ALPHA_c (s);
+ UNcx4_MUL_UNc (d, a);
+ *(dest + i) = d;
+ }
+}
+
+/* if the Dst is opaque, call combine_clear */
+static void
+combine_out_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t s = combine_mask (src, mask, i);
+ comp4_t a = ALPHA_c (~*(dest + i));
+ UNcx4_MUL_UNc (s, a);
+ *(dest + i) = s;
+ }
+}
+
+/* if the Src is opaque, call combine_clear */
+static void
+combine_out_reverse_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t s = combine_mask (src, mask, i);
+ comp4_t d = *(dest + i);
+ comp4_t a = ALPHA_c (~s);
+ UNcx4_MUL_UNc (d, a);
+ *(dest + i) = d;
+ }
+}
+
+/* if the Src is opaque, call combine_in_u */
+/* if the Dst is opaque, call combine_over_u */
+/* if both the Src and Dst are opaque, call combine_src_u */
+static void
+combine_atop_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t s = combine_mask (src, mask, i);
+ comp4_t d = *(dest + i);
+ comp4_t dest_a = ALPHA_c (d);
+ comp4_t src_ia = ALPHA_c (~s);
+
+ UNcx4_MUL_UNc_ADD_UNcx4_MUL_UNc (s, dest_a, d, src_ia);
+ *(dest + i) = s;
+ }
+}
+
+/* if the Src is opaque, call combine_over_reverse_u */
+/* if the Dst is opaque, call combine_in_reverse_u */
+/* if both the Src and Dst are opaque, call combine_dst_u */
+static void
+combine_atop_reverse_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t s = combine_mask (src, mask, i);
+ comp4_t d = *(dest + i);
+ comp4_t src_a = ALPHA_c (s);
+ comp4_t dest_ia = ALPHA_c (~d);
+
+ UNcx4_MUL_UNc_ADD_UNcx4_MUL_UNc (s, dest_ia, d, src_a);
+ *(dest + i) = s;
+ }
+}
+
+/* if the Src is opaque, call combine_over_u */
+/* if the Dst is opaque, call combine_over_reverse_u */
+/* if both the Src and Dst are opaque, call combine_clear */
+static void
+combine_xor_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t s = combine_mask (src, mask, i);
+ comp4_t d = *(dest + i);
+ comp4_t src_ia = ALPHA_c (~s);
+ comp4_t dest_ia = ALPHA_c (~d);
+
+ UNcx4_MUL_UNc_ADD_UNcx4_MUL_UNc (s, dest_ia, d, src_ia);
+ *(dest + i) = s;
+ }
+}
+
+static void
+combine_add_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t s = combine_mask (src, mask, i);
+ comp4_t d = *(dest + i);
+ UNcx4_ADD_UNcx4 (d, s);
+ *(dest + i) = d;
+ }
+}
+
+/* if the Src is opaque, call combine_add_u */
+/* if the Dst is opaque, call combine_add_u */
+/* if both the Src and Dst are opaque, call combine_add_u */
+static void
+combine_saturate_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t s = combine_mask (src, mask, i);
+ comp4_t d = *(dest + i);
+ comp2_t sa, da;
+
+ sa = s >> A_SHIFT;
+ da = ~d >> A_SHIFT;
+ if (sa > da)
+ {
+ sa = DIV_UNc (da, sa);
+ UNcx4_MUL_UNc (s, sa);
+ }
+ ;
+ UNcx4_ADD_UNcx4 (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/acrobat/pdfs/PDF32000_2008.pdf
+ * The relevant chapters are 11.3.5 and 11.3.6.
+ * 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() being the blend function.
+ * Note that OVER is a special case of this operation, using B(Cb, Cs) = Cs
+ *
+ * These blend modes should match the SVG filter draft specification, as
+ * it has been designed to mirror ISO 32000. Note that at the current point
+ * no released draft exists that shows this, as the formulas have not been
+ * updated yet after the release of ISO 32000.
+ *
+ * The default implementation here uses the PDF_SEPARABLE_BLEND_MODE and
+ * PDF_NON_SEPARABLE_BLEND_MODE macros, which take the blend function as an
+ * argument. Note that this implementation operates on premultiplied colors,
+ * while the PDF specification does not. Therefore the code uses the formula
+ * ar.Cra = (1 – as) . Dca + (1 – ad) . Sca + B(Dca, ad, Sca, as)
+ */
+
+/*
+ * Multiply
+ * B(Dca, ad, Sca, as) = Dca.Sca
+ */
+
+static void
+combine_multiply_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t s = combine_mask (src, mask, i);
+ comp4_t d = *(dest + i);
+ comp4_t ss = s;
+ comp4_t src_ia = ALPHA_c (~s);
+ comp4_t dest_ia = ALPHA_c (~d);
+
+ UNcx4_MUL_UNc_ADD_UNcx4_MUL_UNc (ss, dest_ia, d, src_ia);
+ UNcx4_MUL_UNcx4 (d, s);
+ UNcx4_ADD_UNcx4 (d, ss);
+
+ *(dest + i) = d;
+ }
+}
+
+static void
+combine_multiply_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t m = *(mask + i);
+ comp4_t s = *(src + i);
+ comp4_t d = *(dest + i);
+ comp4_t r = d;
+ comp4_t dest_ia = ALPHA_c (~d);
+
+ combine_mask_value_ca (&s, &m);
+
+ UNcx4_MUL_UNcx4_ADD_UNcx4_MUL_UNc (r, ~m, s, dest_ia);
+ UNcx4_MUL_UNcx4 (d, s);
+ UNcx4_ADD_UNcx4 (r, d);
+
+ *(dest + i) = r;
+ }
+}
+
+#define PDF_SEPARABLE_BLEND_MODE(name) \
+ static void \
+ combine_ ## name ## _u (pixman_implementation_t *imp, \
+ pixman_op_t op, \
+ comp4_t * dest, \
+ const comp4_t * src, \
+ const comp4_t * mask, \
+ int width) \
+ { \
+ int i; \
+ for (i = 0; i < width; ++i) { \
+ comp4_t s = combine_mask (src, mask, i); \
+ comp4_t d = *(dest + i); \
+ comp1_t sa = ALPHA_c (s); \
+ comp1_t isa = ~sa; \
+ comp1_t da = ALPHA_c (d); \
+ comp1_t ida = ~da; \
+ comp4_t result; \
+ \
+ result = d; \
+ UNcx4_MUL_UNc_ADD_UNcx4_MUL_UNc (result, isa, s, ida); \
+ \
+ *(dest + i) = result + \
+ (DIV_ONE_UNc (sa * da) << A_SHIFT) + \
+ (blend_ ## name (RED_c (d), da, RED_c (s), sa) << R_SHIFT) + \
+ (blend_ ## name (GREEN_c (d), da, GREEN_c (s), sa) << G_SHIFT) + \
+ (blend_ ## name (BLUE_c (d), da, BLUE_c (s), sa)); \
+ } \
+ } \
+ \
+ static void \
+ combine_ ## name ## _ca (pixman_implementation_t *imp, \
+ pixman_op_t op, \
+ comp4_t * dest, \
+ const comp4_t * src, \
+ const comp4_t * mask, \
+ int width) \
+ { \
+ int i; \
+ for (i = 0; i < width; ++i) { \
+ comp4_t m = *(mask + i); \
+ comp4_t s = *(src + i); \
+ comp4_t d = *(dest + i); \
+ comp1_t da = ALPHA_c (d); \
+ comp1_t ida = ~da; \
+ comp4_t result; \
+ \
+ combine_mask_value_ca (&s, &m); \
+ \
+ result = d; \
+ UNcx4_MUL_UNcx4_ADD_UNcx4_MUL_UNc (result, ~m, s, ida); \
+ \
+ result += \
+ (DIV_ONE_UNc (ALPHA_c (m) * da) << A_SHIFT) + \
+ (blend_ ## name (RED_c (d), da, RED_c (s), RED_c (m)) << R_SHIFT) + \
+ (blend_ ## name (GREEN_c (d), da, GREEN_c (s), GREEN_c (m)) << G_SHIFT) + \
+ (blend_ ## name (BLUE_c (d), da, BLUE_c (s), BLUE_c (m))); \
+ \
+ *(dest + i) = result; \
+ } \
+ }
+
+/*
+ * Screen
+ * B(Dca, ad, Sca, as) = Dca.sa + Sca.da - Dca.Sca
+ */
+static inline comp4_t
+blend_screen (comp4_t dca, comp4_t da, comp4_t sca, comp4_t sa)
+{
+ return DIV_ONE_UNc (sca * da + dca * sa - sca * dca);
+}
+
+PDF_SEPARABLE_BLEND_MODE (screen)
+
+/*
+ * Overlay
+ * B(Dca, Da, Sca, Sa) =
+ * if 2.Dca < Da
+ * 2.Sca.Dca
+ * otherwise
+ * Sa.Da - 2.(Da - Dca).(Sa - Sca)
+ */
+static inline comp4_t
+blend_overlay (comp4_t dca, comp4_t da, comp4_t sca, comp4_t sa)
+{
+ comp4_t rca;
+
+ if (2 * dca < da)
+ rca = 2 * sca * dca;
+ else
+ rca = sa * da - 2 * (da - dca) * (sa - sca);
+ return DIV_ONE_UNc (rca);
+}
+
+PDF_SEPARABLE_BLEND_MODE (overlay)
+
+/*
+ * Darken
+ * B(Dca, Da, Sca, Sa) = min (Sca.Da, Dca.Sa)
+ */
+static inline comp4_t
+blend_darken (comp4_t dca, comp4_t da, comp4_t sca, comp4_t sa)
+{
+ comp4_t s, d;
+
+ s = sca * da;
+ d = dca * sa;
+ return DIV_ONE_UNc (s > d ? d : s);
+}
+
+PDF_SEPARABLE_BLEND_MODE (darken)
+
+/*
+ * Lighten
+ * B(Dca, Da, Sca, Sa) = max (Sca.Da, Dca.Sa)
+ */
+static inline comp4_t
+blend_lighten (comp4_t dca, comp4_t da, comp4_t sca, comp4_t sa)
+{
+ comp4_t s, d;
+
+ s = sca * da;
+ d = dca * sa;
+ return DIV_ONE_UNc (s > d ? s : d);
+}
+
+PDF_SEPARABLE_BLEND_MODE (lighten)
+
+/*
+ * Color dodge
+ * B(Dca, Da, Sca, Sa) =
+ * if Dca == 0
+ * 0
+ * if Sca == Sa
+ * Sa.Da
+ * otherwise
+ * Sa.Da. min (1, Dca / Da / (1 - Sca/Sa))
+ */
+static inline comp4_t
+blend_color_dodge (comp4_t dca, comp4_t da, comp4_t sca, comp4_t sa)
+{
+ if (sca >= sa)
+ {
+ return dca == 0 ? 0 : DIV_ONE_UNc (sa * da);
+ }
+ else
+ {
+ comp4_t rca = dca * sa / (sa - sca);
+ return DIV_ONE_UNc (sa * MIN (rca, da));
+ }
+}
+
+PDF_SEPARABLE_BLEND_MODE (color_dodge)
+
+/*
+ * Color burn
+ * B(Dca, Da, Sca, Sa) =
+ * if Dca == Da
+ * Sa.Da
+ * if Sca == 0
+ * 0
+ * otherwise
+ * Sa.Da.(1 - min (1, (1 - Dca/Da).Sa / Sca))
+ */
+static inline comp4_t
+blend_color_burn (comp4_t dca, comp4_t da, comp4_t sca, comp4_t sa)
+{
+ if (sca == 0)
+ {
+ return dca < da ? 0 : DIV_ONE_UNc (sa * da);
+ }
+ else
+ {
+ comp4_t rca = (da - dca) * sa / sca;
+ return DIV_ONE_UNc (sa * (MAX (rca, da) - rca));
+ }
+}
+
+PDF_SEPARABLE_BLEND_MODE (color_burn)
+
+/*
+ * Hard light
+ * B(Dca, Da, Sca, Sa) =
+ * if 2.Sca < Sa
+ * 2.Sca.Dca
+ * otherwise
+ * Sa.Da - 2.(Da - Dca).(Sa - Sca)
+ */
+static inline comp4_t
+blend_hard_light (comp4_t dca, comp4_t da, comp4_t sca, comp4_t sa)
+{
+ if (2 * sca < sa)
+ return DIV_ONE_UNc (2 * sca * dca);
+ else
+ return DIV_ONE_UNc (sa * da - 2 * (da - dca) * (sa - sca));
+}
+
+PDF_SEPARABLE_BLEND_MODE (hard_light)
+
+/*
+ * Soft light
+ * B(Dca, Da, Sca, Sa) =
+ * if (2.Sca <= Sa)
+ * Dca.(Sa - (1 - Dca/Da).(2.Sca - Sa))
+ * otherwise if Dca.4 <= Da
+ * Dca.(Sa + (2.Sca - Sa).((16.Dca/Da - 12).Dca/Da + 3)
+ * otherwise
+ * (Dca.Sa + (SQRT (Dca/Da).Da - Dca).(2.Sca - Sa))
+ */
+static inline comp4_t
+blend_soft_light (comp4_t dca_org,
+ comp4_t da_org,
+ comp4_t sca_org,
+ comp4_t sa_org)
+{
+ double dca = dca_org * (1.0 / MASK);
+ double da = da_org * (1.0 / MASK);
+ double sca = sca_org * (1.0 / MASK);
+ double sa = sa_org * (1.0 / MASK);
+ double rca;
+
+ if (2 * sca < sa)
+ {
+ if (da == 0)
+ rca = dca * sa;
+ else
+ rca = dca * sa - dca * (da - dca) * (sa - 2 * sca) / da;
+ }
+ else if (da == 0)
+ {
+ rca = 0;
+ }
+ else if (4 * dca <= da)
+ {
+ rca = dca * sa +
+ (2 * sca - sa) * dca * ((16 * dca / da - 12) * dca / da + 3);
+ }
+ else
+ {
+ rca = dca * sa + (sqrt (dca * da) - dca) * (2 * sca - sa);
+ }
+ return rca * MASK + 0.5;
+}
+
+PDF_SEPARABLE_BLEND_MODE (soft_light)
+
+/*
+ * Difference
+ * B(Dca, Da, Sca, Sa) = abs (Dca.Sa - Sca.Da)
+ */
+static inline comp4_t
+blend_difference (comp4_t dca, comp4_t da, comp4_t sca, comp4_t sa)
+{
+ comp4_t dcasa = dca * sa;
+ comp4_t scada = sca * da;
+
+ if (scada < dcasa)
+ return DIV_ONE_UNc (dcasa - scada);
+ else
+ return DIV_ONE_UNc (scada - dcasa);
+}
+
+PDF_SEPARABLE_BLEND_MODE (difference)
+
+/*
+ * Exclusion
+ * B(Dca, Da, Sca, Sa) = (Sca.Da + Dca.Sa - 2.Sca.Dca)
+ */
+
+/* This can be made faster by writing it directly and not using
+ * PDF_SEPARABLE_BLEND_MODE, but that's a performance optimization */
+
+static inline comp4_t
+blend_exclusion (comp4_t dca, comp4_t da, comp4_t sca, comp4_t sa)
+{
+ return DIV_ONE_UNc (sca * da + dca * sa - 2 * dca * sca);
+}
+
+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, ra);
+ *
+ * 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 they 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, rs)
+ *
+ */
+
+/* So, for the non-separable PDF blend modes, we have (using s, d for
+ * non-premultiplied colors, and S, D for premultiplied:
+ *
+ * Color:
+ *
+ * a_s * a_d * B(s, d)
+ * = a_s * a_d * set_lum (S/a_s, LUM (D/a_d), 1)
+ * = set_lum (S * a_d, a_s * LUM (D), a_s * a_d)
+ *
+ *
+ * Luminosity:
+ *
+ * a_s * a_d * B(s, d)
+ * = a_s * a_d * set_lum (D/a_d, LUM(S/a_s), 1)
+ * = set_lum (a_s * D, a_d * LUM(S), a_s * a_d)
+ *
+ *
+ * Saturation:
+ *
+ * a_s * a_d * B(s, d)
+ * = a_s * a_d * set_lum (set_sat (D/a_d, SAT (S/a_s)), LUM (D/a_d), 1)
+ * = set_lum (a_s * a_d * set_sat (D/a_d, SAT (S/a_s)),
+ * a_s * LUM (D), a_s * a_d)
+ * = set_lum (set_sat (a_s * D, a_d * SAT (S), a_s * LUM (D), a_s * a_d))
+ *
+ * Hue:
+ *
+ * a_s * a_d * B(s, d)
+ * = a_s * a_d * set_lum (set_sat (S/a_s, SAT (D/a_d)), LUM (D/a_d), 1)
+ * = a_s * a_d * set_lum (set_sat (a_d * S, a_s * SAT (D)),
+ * a_s * LUM (D), a_s * a_d)
+ *
+ */
+
+#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, \
+ comp4_t *dest, \
+ const comp4_t *src, \
+ const comp4_t *mask, \
+ int width) \
+ { \
+ int i; \
+ for (i = 0; i < width; ++i) \
+ { \
+ comp4_t s = combine_mask (src, mask, i); \
+ comp4_t d = *(dest + i); \
+ comp1_t sa = ALPHA_c (s); \
+ comp1_t isa = ~sa; \
+ comp1_t da = ALPHA_c (d); \
+ comp1_t ida = ~da; \
+ comp4_t result; \
+ comp4_t sc[3], dc[3], c[3]; \
+ \
+ result = d; \
+ UNcx4_MUL_UNc_ADD_UNcx4_MUL_UNc (result, isa, s, ida); \
+ dc[0] = RED_c (d); \
+ sc[0] = RED_c (s); \
+ dc[1] = GREEN_c (d); \
+ sc[1] = GREEN_c (s); \
+ dc[2] = BLUE_c (d); \
+ sc[2] = BLUE_c (s); \
+ blend_ ## name (c, dc, da, sc, sa); \
+ \
+ *(dest + i) = result + \
+ (DIV_ONE_UNc (sa * da) << A_SHIFT) + \
+ (DIV_ONE_UNc (c[0]) << R_SHIFT) + \
+ (DIV_ONE_UNc (c[1]) << G_SHIFT) + \
+ (DIV_ONE_UNc (c[2])); \
+ } \
+ }
+
+static void
+set_lum (comp4_t dest[3], comp4_t src[3], comp4_t sa, comp4_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 (comp4_t dest[3], comp4_t src[3], comp4_t sat)
+{
+ int id[3];
+ comp4_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:
+ * B(Cb, Cs) = set_lum (set_sat (Cs, SAT (Cb)), LUM (Cb))
+ */
+static inline void
+blend_hsl_hue (comp4_t c[3],
+ comp4_t dc[3],
+ comp4_t da,
+ comp4_t sc[3],
+ comp4_t sa)
+{
+ c[0] = sc[0] * da;
+ c[1] = sc[1] * da;
+ c[2] = sc[2] * da;
+ set_sat (c, c, SAT (dc) * sa);
+ set_lum (c, c, sa * da, LUM (dc) * sa);
+}
+
+PDF_NON_SEPARABLE_BLEND_MODE (hsl_hue)
+
+/*
+ * Saturation:
+ * B(Cb, Cs) = set_lum (set_sat (Cb, SAT (Cs)), LUM (Cb))
+ */
+static inline void
+blend_hsl_saturation (comp4_t c[3],
+ comp4_t dc[3],
+ comp4_t da,
+ comp4_t sc[3],
+ comp4_t sa)
+{
+ c[0] = dc[0] * sa;
+ c[1] = dc[1] * sa;
+ c[2] = dc[2] * sa;
+ set_sat (c, c, SAT (sc) * da);
+ set_lum (c, c, sa * da, LUM (dc) * sa);
+}
+
+PDF_NON_SEPARABLE_BLEND_MODE (hsl_saturation)
+
+/*
+ * Color:
+ * B(Cb, Cs) = set_lum (Cs, LUM (Cb))
+ */
+static inline void
+blend_hsl_color (comp4_t c[3],
+ comp4_t dc[3],
+ comp4_t da,
+ comp4_t sc[3],
+ comp4_t sa)
+{
+ c[0] = sc[0] * da;
+ c[1] = sc[1] * da;
+ c[2] = sc[2] * da;
+ set_lum (c, c, sa * da, LUM (dc) * sa);
+}
+
+PDF_NON_SEPARABLE_BLEND_MODE (hsl_color)
+
+/*
+ * Luminosity:
+ * B(Cb, Cs) = set_lum (Cb, LUM (Cs))
+ */
+static inline void
+blend_hsl_luminosity (comp4_t c[3],
+ comp4_t dc[3],
+ comp4_t da,
+ comp4_t sc[3],
+ comp4_t sa)
+{
+ c[0] = dc[0] * sa;
+ c[1] = dc[1] * sa;
+ c[2] = dc[2] * sa;
+ set_lum (c, c, sa * da, LUM (sc) * da);
+}
+
+PDF_NON_SEPARABLE_BLEND_MODE (hsl_luminosity)
+
+#undef SAT
+#undef LUM
+#undef CH_MAX
+#undef CH_MIN
+#undef PDF_NON_SEPARABLE_BLEND_MODE
+
+/* Overlay
+ *
+ * All of the disjoint 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)
+ */
+
+#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 comp1_t
+combine_disjoint_out_part (comp1_t a, comp1_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_UNc (b, a); /* (1-b) / a */
+}
+
+/* portion covered by both a and b */
+static comp1_t
+combine_disjoint_in_part (comp1_t a, comp1_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_UNc(b, a); /* 1 - (1-b) / a */
+}
+
+/* portion covered by a but not b */
+static comp1_t
+combine_conjoint_out_part (comp1_t a, comp1_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_UNc(b, a); /* 1 - b/a */
+}
+
+/* portion covered by both a and b */
+static comp1_t
+combine_conjoint_in_part (comp1_t a, comp1_t b)
+{
+ /* min (1,b/a) */
+
+ if (b >= a) /* b >= a -> b/a >= 1 */
+ return MASK; /* 1 */
+ return DIV_UNc (b, a); /* b/a */
+}
+
+#define GET_COMP(v, i) ((comp2_t) (comp1_t) ((v) >> i))
+
+#define ADD(x, y, i, t) \
+ ((t) = GET_COMP (x, i) + GET_COMP (y, i), \
+ (comp4_t) ((comp1_t) ((t) | (0 - ((t) >> G_SHIFT)))) << (i))
+
+#define GENERIC(x, y, i, ax, ay, t, u, v) \
+ ((t) = (MUL_UNc (GET_COMP (y, i), ay, (u)) + \
+ MUL_UNc (GET_COMP (x, i), ax, (v))), \
+ (comp4_t) ((comp1_t) ((t) | \
+ (0 - ((t) >> G_SHIFT)))) << (i))
+
+static void
+combine_disjoint_general_u (comp4_t * dest,
+ const comp4_t *src,
+ const comp4_t *mask,
+ int width,
+ comp1_t combine)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t s = combine_mask (src, mask, i);
+ comp4_t d = *(dest + i);
+ comp4_t m, n, o, p;
+ comp2_t Fa, Fb, t, u, v;
+ comp1_t sa = s >> A_SHIFT;
+ comp1_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t s = combine_mask (src, mask, i);
+ comp2_t a = s >> A_SHIFT;
+
+ if (s != 0x00)
+ {
+ comp4_t d = *(dest + i);
+ a = combine_disjoint_out_part (d >> A_SHIFT, a);
+ UNcx4_MUL_UNc_ADD_UNcx4 (d, a, s);
+
+ *(dest + i) = d;
+ }
+ }
+}
+
+static void
+combine_disjoint_in_u (pixman_implementation_t *imp,
+ pixman_op_t op,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ combine_disjoint_general_u (dest, src, mask, width, COMBINE_XOR);
+}
+
+static void
+combine_conjoint_general_u (comp4_t * dest,
+ const comp4_t *src,
+ const comp4_t *mask,
+ int width,
+ comp1_t combine)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t s = combine_mask (src, mask, i);
+ comp4_t d = *(dest + i);
+ comp4_t m, n, o, p;
+ comp2_t Fa, Fb, t, u, v;
+ comp1_t sa = s >> A_SHIFT;
+ comp1_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ combine_conjoint_general_u (dest, src, mask, width, COMBINE_XOR);
+}
+
+/************************************************************************/
+/*********************** Per Channel functions **************************/
+/************************************************************************/
+
+static void
+combine_clear_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ memset (dest, 0, width * sizeof(comp4_t));
+}
+
+static void
+combine_src_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t s = *(src + i);
+ comp4_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t s = *(src + i);
+ comp4_t m = *(mask + i);
+ comp4_t a;
+
+ combine_mask_ca (&s, &m);
+
+ a = ~m;
+ if (a)
+ {
+ comp4_t d = *(dest + i);
+ UNcx4_MUL_UNcx4_ADD_UNcx4 (d, a, s);
+ s = d;
+ }
+
+ *(dest + i) = s;
+ }
+}
+
+static void
+combine_over_reverse_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t d = *(dest + i);
+ comp4_t a = ~d >> A_SHIFT;
+
+ if (a)
+ {
+ comp4_t s = *(src + i);
+ comp4_t m = *(mask + i);
+
+ UNcx4_MUL_UNcx4 (s, m);
+ UNcx4_MUL_UNc_ADD_UNcx4 (s, a, d);
+
+ *(dest + i) = s;
+ }
+ }
+}
+
+static void
+combine_in_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t d = *(dest + i);
+ comp2_t a = d >> A_SHIFT;
+ comp4_t s = 0;
+
+ if (a)
+ {
+ comp4_t m = *(mask + i);
+
+ s = *(src + i);
+ combine_mask_value_ca (&s, &m);
+
+ if (a != MASK)
+ UNcx4_MUL_UNc (s, a);
+ }
+
+ *(dest + i) = s;
+ }
+}
+
+static void
+combine_in_reverse_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t s = *(src + i);
+ comp4_t m = *(mask + i);
+ comp4_t a;
+
+ combine_mask_alpha_ca (&s, &m);
+
+ a = m;
+ if (a != ~0)
+ {
+ comp4_t d = 0;
+
+ if (a)
+ {
+ d = *(dest + i);
+ UNcx4_MUL_UNcx4 (d, a);
+ }
+
+ *(dest + i) = d;
+ }
+ }
+}
+
+static void
+combine_out_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t d = *(dest + i);
+ comp2_t a = ~d >> A_SHIFT;
+ comp4_t s = 0;
+
+ if (a)
+ {
+ comp4_t m = *(mask + i);
+
+ s = *(src + i);
+ combine_mask_value_ca (&s, &m);
+
+ if (a != MASK)
+ UNcx4_MUL_UNc (s, a);
+ }
+
+ *(dest + i) = s;
+ }
+}
+
+static void
+combine_out_reverse_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t s = *(src + i);
+ comp4_t m = *(mask + i);
+ comp4_t a;
+
+ combine_mask_alpha_ca (&s, &m);
+
+ a = ~m;
+ if (a != ~0)
+ {
+ comp4_t d = 0;
+
+ if (a)
+ {
+ d = *(dest + i);
+ UNcx4_MUL_UNcx4 (d, a);
+ }
+
+ *(dest + i) = d;
+ }
+ }
+}
+
+static void
+combine_atop_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t d = *(dest + i);
+ comp4_t s = *(src + i);
+ comp4_t m = *(mask + i);
+ comp4_t ad;
+ comp2_t as = d >> A_SHIFT;
+
+ combine_mask_ca (&s, &m);
+
+ ad = ~m;
+
+ UNcx4_MUL_UNcx4_ADD_UNcx4_MUL_UNc (d, ad, s, as);
+
+ *(dest + i) = d;
+ }
+}
+
+static void
+combine_atop_reverse_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t d = *(dest + i);
+ comp4_t s = *(src + i);
+ comp4_t m = *(mask + i);
+ comp4_t ad;
+ comp2_t as = ~d >> A_SHIFT;
+
+ combine_mask_ca (&s, &m);
+
+ ad = m;
+
+ UNcx4_MUL_UNcx4_ADD_UNcx4_MUL_UNc (d, ad, s, as);
+
+ *(dest + i) = d;
+ }
+}
+
+static void
+combine_xor_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t d = *(dest + i);
+ comp4_t s = *(src + i);
+ comp4_t m = *(mask + i);
+ comp4_t ad;
+ comp2_t as = ~d >> A_SHIFT;
+
+ combine_mask_ca (&s, &m);
+
+ ad = ~m;
+
+ UNcx4_MUL_UNcx4_ADD_UNcx4_MUL_UNc (d, ad, s, as);
+
+ *(dest + i) = d;
+ }
+}
+
+static void
+combine_add_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t s = *(src + i);
+ comp4_t m = *(mask + i);
+ comp4_t d = *(dest + i);
+
+ combine_mask_value_ca (&s, &m);
+
+ UNcx4_ADD_UNcx4 (d, s);
+
+ *(dest + i) = d;
+ }
+}
+
+static void
+combine_saturate_ca (pixman_implementation_t *imp,
+ pixman_op_t op,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t s, d;
+ comp2_t sa, sr, sg, sb, da;
+ comp2_t t, u, v;
+ comp4_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 (comp4_t * dest,
+ const comp4_t *src,
+ const comp4_t *mask,
+ int width,
+ comp1_t combine)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t s, d;
+ comp4_t m, n, o, p;
+ comp4_t Fa, Fb;
+ comp2_t t, u, v;
+ comp4_t sa;
+ comp1_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 = (comp4_t)combine_disjoint_out_part ((comp1_t) (sa >> 0), da);
+ n = (comp4_t)combine_disjoint_out_part ((comp1_t) (sa >> G_SHIFT), da) << G_SHIFT;
+ o = (comp4_t)combine_disjoint_out_part ((comp1_t) (sa >> R_SHIFT), da) << R_SHIFT;
+ p = (comp4_t)combine_disjoint_out_part ((comp1_t) (sa >> A_SHIFT), da) << A_SHIFT;
+ Fa = m | n | o | p;
+ break;
+
+ case COMBINE_A_IN:
+ m = (comp4_t)combine_disjoint_in_part ((comp1_t) (sa >> 0), da);
+ n = (comp4_t)combine_disjoint_in_part ((comp1_t) (sa >> G_SHIFT), da) << G_SHIFT;
+ o = (comp4_t)combine_disjoint_in_part ((comp1_t) (sa >> R_SHIFT), da) << R_SHIFT;
+ p = (comp4_t)combine_disjoint_in_part ((comp1_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 = (comp4_t)combine_disjoint_out_part (da, (comp1_t) (sa >> 0));
+ n = (comp4_t)combine_disjoint_out_part (da, (comp1_t) (sa >> G_SHIFT)) << G_SHIFT;
+ o = (comp4_t)combine_disjoint_out_part (da, (comp1_t) (sa >> R_SHIFT)) << R_SHIFT;
+ p = (comp4_t)combine_disjoint_out_part (da, (comp1_t) (sa >> A_SHIFT)) << A_SHIFT;
+ Fb = m | n | o | p;
+ break;
+
+ case COMBINE_B_IN:
+ m = (comp4_t)combine_disjoint_in_part (da, (comp1_t) (sa >> 0));
+ n = (comp4_t)combine_disjoint_in_part (da, (comp1_t) (sa >> G_SHIFT)) << G_SHIFT;
+ o = (comp4_t)combine_disjoint_in_part (da, (comp1_t) (sa >> R_SHIFT)) << R_SHIFT;
+ p = (comp4_t)combine_disjoint_in_part (da, (comp1_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ combine_disjoint_general_ca (dest, src, mask, width, COMBINE_XOR);
+}
+
+static void
+combine_conjoint_general_ca (comp4_t * dest,
+ const comp4_t *src,
+ const comp4_t *mask,
+ int width,
+ comp1_t combine)
+{
+ int i;
+
+ for (i = 0; i < width; ++i)
+ {
+ comp4_t s, d;
+ comp4_t m, n, o, p;
+ comp4_t Fa, Fb;
+ comp2_t t, u, v;
+ comp4_t sa;
+ comp1_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 = (comp4_t)combine_conjoint_out_part ((comp1_t) (sa >> 0), da);
+ n = (comp4_t)combine_conjoint_out_part ((comp1_t) (sa >> G_SHIFT), da) << G_SHIFT;
+ o = (comp4_t)combine_conjoint_out_part ((comp1_t) (sa >> R_SHIFT), da) << R_SHIFT;
+ p = (comp4_t)combine_conjoint_out_part ((comp1_t) (sa >> A_SHIFT), da) << A_SHIFT;
+ Fa = m | n | o | p;
+ break;
+
+ case COMBINE_A_IN:
+ m = (comp4_t)combine_conjoint_in_part ((comp1_t) (sa >> 0), da);
+ n = (comp4_t)combine_conjoint_in_part ((comp1_t) (sa >> G_SHIFT), da) << G_SHIFT;
+ o = (comp4_t)combine_conjoint_in_part ((comp1_t) (sa >> R_SHIFT), da) << R_SHIFT;
+ p = (comp4_t)combine_conjoint_in_part ((comp1_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 = (comp4_t)combine_conjoint_out_part (da, (comp1_t) (sa >> 0));
+ n = (comp4_t)combine_conjoint_out_part (da, (comp1_t) (sa >> G_SHIFT)) << G_SHIFT;
+ o = (comp4_t)combine_conjoint_out_part (da, (comp1_t) (sa >> R_SHIFT)) << R_SHIFT;
+ p = (comp4_t)combine_conjoint_out_part (da, (comp1_t) (sa >> A_SHIFT)) << A_SHIFT;
+ Fb = m | n | o | p;
+ break;
+
+ case COMBINE_B_IN:
+ m = (comp4_t)combine_conjoint_in_part (da, (comp1_t) (sa >> 0));
+ n = (comp4_t)combine_conjoint_in_part (da, (comp1_t) (sa >> G_SHIFT)) << G_SHIFT;
+ o = (comp4_t)combine_conjoint_in_part (da, (comp1_t) (sa >> R_SHIFT)) << R_SHIFT;
+ p = (comp4_t)combine_conjoint_in_part (da, (comp1_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_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,
+ comp4_t * dest,
+ const comp4_t * src,
+ const comp4_t * mask,
+ int width)
+{
+ combine_conjoint_general_ca (dest, src, mask, width, COMBINE_XOR);
+}
+
+void
+_pixman_setup_combiner_functions_width (pixman_implementation_t *imp)
+{
+ /* Unified alpha */
+ imp->combine_width[PIXMAN_OP_CLEAR] = combine_clear;
+ imp->combine_width[PIXMAN_OP_SRC] = combine_src_u;
+ imp->combine_width[PIXMAN_OP_DST] = combine_dst;
+ imp->combine_width[PIXMAN_OP_OVER] = combine_over_u;
+ imp->combine_width[PIXMAN_OP_OVER_REVERSE] = combine_over_reverse_u;
+ imp->combine_width[PIXMAN_OP_IN] = combine_in_u;
+ imp->combine_width[PIXMAN_OP_IN_REVERSE] = combine_in_reverse_u;
+ imp->combine_width[PIXMAN_OP_OUT] = combine_out_u;
+ imp->combine_width[PIXMAN_OP_OUT_REVERSE] = combine_out_reverse_u;
+ imp->combine_width[PIXMAN_OP_ATOP] = combine_atop_u;
+ imp->combine_width[PIXMAN_OP_ATOP_REVERSE] = combine_atop_reverse_u;
+ imp->combine_width[PIXMAN_OP_XOR] = combine_xor_u;
+ imp->combine_width[PIXMAN_OP_ADD] = combine_add_u;
+ imp->combine_width[PIXMAN_OP_SATURATE] = combine_saturate_u;
+
+ /* Disjoint, unified */
+ imp->combine_width[PIXMAN_OP_DISJOINT_CLEAR] = combine_clear;
+ imp->combine_width[PIXMAN_OP_DISJOINT_SRC] = combine_src_u;
+ imp->combine_width[PIXMAN_OP_DISJOINT_DST] = combine_dst;
+ imp->combine_width[PIXMAN_OP_DISJOINT_OVER] = combine_disjoint_over_u;
+ imp->combine_width[PIXMAN_OP_DISJOINT_OVER_REVERSE] = combine_saturate_u;
+ imp->combine_width[PIXMAN_OP_DISJOINT_IN] = combine_disjoint_in_u;
+ imp->combine_width[PIXMAN_OP_DISJOINT_IN_REVERSE] = combine_disjoint_in_reverse_u;
+ imp->combine_width[PIXMAN_OP_DISJOINT_OUT] = combine_disjoint_out_u;
+ imp->combine_width[PIXMAN_OP_DISJOINT_OUT_REVERSE] = combine_disjoint_out_reverse_u;
+ imp->combine_width[PIXMAN_OP_DISJOINT_ATOP] = combine_disjoint_atop_u;
+ imp->combine_width[PIXMAN_OP_DISJOINT_ATOP_REVERSE] = combine_disjoint_atop_reverse_u;
+ imp->combine_width[PIXMAN_OP_DISJOINT_XOR] = combine_disjoint_xor_u;
+
+ /* Conjoint, unified */
+ imp->combine_width[PIXMAN_OP_CONJOINT_CLEAR] = combine_clear;
+ imp->combine_width[PIXMAN_OP_CONJOINT_SRC] = combine_src_u;
+ imp->combine_width[PIXMAN_OP_CONJOINT_DST] = combine_dst;
+ imp->combine_width[PIXMAN_OP_CONJOINT_OVER] = combine_conjoint_over_u;
+ imp->combine_width[PIXMAN_OP_CONJOINT_OVER_REVERSE] = combine_conjoint_over_reverse_u;
+ imp->combine_width[PIXMAN_OP_CONJOINT_IN] = combine_conjoint_in_u;
+ imp->combine_width[PIXMAN_OP_CONJOINT_IN_REVERSE] = combine_conjoint_in_reverse_u;
+ imp->combine_width[PIXMAN_OP_CONJOINT_OUT] = combine_conjoint_out_u;
+ imp->combine_width[PIXMAN_OP_CONJOINT_OUT_REVERSE] = combine_conjoint_out_reverse_u;
+ imp->combine_width[PIXMAN_OP_CONJOINT_ATOP] = combine_conjoint_atop_u;
+ imp->combine_width[PIXMAN_OP_CONJOINT_ATOP_REVERSE] = combine_conjoint_atop_reverse_u;
+ imp->combine_width[PIXMAN_OP_CONJOINT_XOR] = combine_conjoint_xor_u;
+
+ imp->combine_width[PIXMAN_OP_MULTIPLY] = combine_multiply_u;
+ imp->combine_width[PIXMAN_OP_SCREEN] = combine_screen_u;
+ imp->combine_width[PIXMAN_OP_OVERLAY] = combine_overlay_u;
+ imp->combine_width[PIXMAN_OP_DARKEN] = combine_darken_u;
+ imp->combine_width[PIXMAN_OP_LIGHTEN] = combine_lighten_u;
+ imp->combine_width[PIXMAN_OP_COLOR_DODGE] = combine_color_dodge_u;
+ imp->combine_width[PIXMAN_OP_COLOR_BURN] = combine_color_burn_u;
+ imp->combine_width[PIXMAN_OP_HARD_LIGHT] = combine_hard_light_u;
+ imp->combine_width[PIXMAN_OP_SOFT_LIGHT] = combine_soft_light_u;
+ imp->combine_width[PIXMAN_OP_DIFFERENCE] = combine_difference_u;
+ imp->combine_width[PIXMAN_OP_EXCLUSION] = combine_exclusion_u;
+ imp->combine_width[PIXMAN_OP_HSL_HUE] = combine_hsl_hue_u;
+ imp->combine_width[PIXMAN_OP_HSL_SATURATION] = combine_hsl_saturation_u;
+ imp->combine_width[PIXMAN_OP_HSL_COLOR] = combine_hsl_color_u;
+ imp->combine_width[PIXMAN_OP_HSL_LUMINOSITY] = combine_hsl_luminosity_u;
+
+ /* Component alpha combiners */
+ imp->combine_width_ca[PIXMAN_OP_CLEAR] = combine_clear_ca;
+ imp->combine_width_ca[PIXMAN_OP_SRC] = combine_src_ca;
+ /* dest */
+ imp->combine_width_ca[PIXMAN_OP_OVER] = combine_over_ca;
+ imp->combine_width_ca[PIXMAN_OP_OVER_REVERSE] = combine_over_reverse_ca;
+ imp->combine_width_ca[PIXMAN_OP_IN] = combine_in_ca;
+ imp->combine_width_ca[PIXMAN_OP_IN_REVERSE] = combine_in_reverse_ca;
+ imp->combine_width_ca[PIXMAN_OP_OUT] = combine_out_ca;
+ imp->combine_width_ca[PIXMAN_OP_OUT_REVERSE] = combine_out_reverse_ca;
+ imp->combine_width_ca[PIXMAN_OP_ATOP] = combine_atop_ca;
+ imp->combine_width_ca[PIXMAN_OP_ATOP_REVERSE] = combine_atop_reverse_ca;
+ imp->combine_width_ca[PIXMAN_OP_XOR] = combine_xor_ca;
+ imp->combine_width_ca[PIXMAN_OP_ADD] = combine_add_ca;
+ imp->combine_width_ca[PIXMAN_OP_SATURATE] = combine_saturate_ca;
+
+ /* Disjoint CA */
+ imp->combine_width_ca[PIXMAN_OP_DISJOINT_CLEAR] = combine_clear_ca;
+ imp->combine_width_ca[PIXMAN_OP_DISJOINT_SRC] = combine_src_ca;
+ imp->combine_width_ca[PIXMAN_OP_DISJOINT_DST] = combine_dst;
+ imp->combine_width_ca[PIXMAN_OP_DISJOINT_OVER] = combine_disjoint_over_ca;
+ imp->combine_width_ca[PIXMAN_OP_DISJOINT_OVER_REVERSE] = combine_saturate_ca;
+ imp->combine_width_ca[PIXMAN_OP_DISJOINT_IN] = combine_disjoint_in_ca;
+ imp->combine_width_ca[PIXMAN_OP_DISJOINT_IN_REVERSE] = combine_disjoint_in_reverse_ca;
+ imp->combine_width_ca[PIXMAN_OP_DISJOINT_OUT] = combine_disjoint_out_ca;
+ imp->combine_width_ca[PIXMAN_OP_DISJOINT_OUT_REVERSE] = combine_disjoint_out_reverse_ca;
+ imp->combine_width_ca[PIXMAN_OP_DISJOINT_ATOP] = combine_disjoint_atop_ca;
+ imp->combine_width_ca[PIXMAN_OP_DISJOINT_ATOP_REVERSE] = combine_disjoint_atop_reverse_ca;
+ imp->combine_width_ca[PIXMAN_OP_DISJOINT_XOR] = combine_disjoint_xor_ca;
+
+ /* Conjoint CA */
+ imp->combine_width_ca[PIXMAN_OP_CONJOINT_CLEAR] = combine_clear_ca;
+ imp->combine_width_ca[PIXMAN_OP_CONJOINT_SRC] = combine_src_ca;
+ imp->combine_width_ca[PIXMAN_OP_CONJOINT_DST] = combine_dst;
+ imp->combine_width_ca[PIXMAN_OP_CONJOINT_OVER] = combine_conjoint_over_ca;
+ imp->combine_width_ca[PIXMAN_OP_CONJOINT_OVER_REVERSE] = combine_conjoint_over_reverse_ca;
+ imp->combine_width_ca[PIXMAN_OP_CONJOINT_IN] = combine_conjoint_in_ca;
+ imp->combine_width_ca[PIXMAN_OP_CONJOINT_IN_REVERSE] = combine_conjoint_in_reverse_ca;
+ imp->combine_width_ca[PIXMAN_OP_CONJOINT_OUT] = combine_conjoint_out_ca;
+ imp->combine_width_ca[PIXMAN_OP_CONJOINT_OUT_REVERSE] = combine_conjoint_out_reverse_ca;
+ imp->combine_width_ca[PIXMAN_OP_CONJOINT_ATOP] = combine_conjoint_atop_ca;
+ imp->combine_width_ca[PIXMAN_OP_CONJOINT_ATOP_REVERSE] = combine_conjoint_atop_reverse_ca;
+ imp->combine_width_ca[PIXMAN_OP_CONJOINT_XOR] = combine_conjoint_xor_ca;
+
+ imp->combine_width_ca[PIXMAN_OP_MULTIPLY] = combine_multiply_ca;
+ imp->combine_width_ca[PIXMAN_OP_SCREEN] = combine_screen_ca;
+ imp->combine_width_ca[PIXMAN_OP_OVERLAY] = combine_overlay_ca;
+ imp->combine_width_ca[PIXMAN_OP_DARKEN] = combine_darken_ca;
+ imp->combine_width_ca[PIXMAN_OP_LIGHTEN] = combine_lighten_ca;
+ imp->combine_width_ca[PIXMAN_OP_COLOR_DODGE] = combine_color_dodge_ca;
+ imp->combine_width_ca[PIXMAN_OP_COLOR_BURN] = combine_color_burn_ca;
+ imp->combine_width_ca[PIXMAN_OP_HARD_LIGHT] = combine_hard_light_ca;
+ imp->combine_width_ca[PIXMAN_OP_SOFT_LIGHT] = combine_soft_light_ca;
+ imp->combine_width_ca[PIXMAN_OP_DIFFERENCE] = combine_difference_ca;
+ imp->combine_width_ca[PIXMAN_OP_EXCLUSION] = combine_exclusion_ca;
+
+ /* It is not clear that these make sense, so make them noops for now */
+ imp->combine_width_ca[PIXMAN_OP_HSL_HUE] = combine_dst;
+ imp->combine_width_ca[PIXMAN_OP_HSL_SATURATION] = combine_dst;
+ imp->combine_width_ca[PIXMAN_OP_HSL_COLOR] = combine_dst;
+ imp->combine_width_ca[PIXMAN_OP_HSL_LUMINOSITY] = combine_dst;
+}
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-01 20:08:17 +0000