/* * Copyright © 2000 Keith Packard, member of The XFree86 Project, Inc. * 2005 Lars Knoll & Zack Rusin, Trolltech * * Permission to use, copy, modify, distribute, and sell this software and its * documentation for any purpose is hereby granted without fee, provided that * the above copyright notice appear in all copies and that both that * copyright notice and this permission notice appear in supporting * documentation, and that the name of Keith Packard not be used in * advertising or publicity pertaining to distribution of the software without * specific, written prior permission. Keith Packard makes no * representations about the suitability of this software for any purpose. It * is provided "as is" without express or implied warranty. * * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS * SOFTWARE. */ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include <math.h> #include <string.h> #include "pixman-private.h" #include "pixman-combine32.h" /* component alpha helper functions */ static void combine_mask_ca (uint32_t *src, uint32_t *mask) { uint32_t a = *mask; uint32_t x; uint16_t xa; if (!a) { *(src) = 0; return; } x = *(src); if (a == ~0) { x = x >> A_SHIFT; x |= x << G_SHIFT; x |= x << R_SHIFT; *(mask) = x; return; } xa = x >> A_SHIFT; UN8x4_MUL_UN8x4 (x, a); *(src) = x; UN8x4_MUL_UN8 (a, xa); *(mask) = a; } static void combine_mask_value_ca (uint32_t *src, const uint32_t *mask) { uint32_t a = *mask; uint32_t x; if (!a) { *(src) = 0; return; } if (a == ~0) return; x = *(src); UN8x4_MUL_UN8x4 (x, a); *(src) = x; } static void combine_mask_alpha_ca (const uint32_t *src, uint32_t *mask) { uint32_t a = *(mask); uint32_t x; if (!a) return; x = *(src) >> A_SHIFT; if (x == MASK) return; if (a == ~0) { x |= x << G_SHIFT; x |= x << R_SHIFT; *(mask) = x; return; } UN8x4_MUL_UN8 (a, x); *(mask) = a; } /* * There are two ways of handling alpha -- either as a single unified value or * a separate value for each component, hence each macro must have two * versions. The unified alpha version has a 'u' at the end of the name, * the component version has a 'ca'. Similarly, functions which deal with * this difference will have two versions using the same convention. */ static force_inline uint32_t combine_mask (const uint32_t *src, const uint32_t *mask, int i) { uint32_t s, m; if (mask) { m = *(mask + i) >> A_SHIFT; if (!m) return 0; } s = *(src + i); if (mask) UN8x4_MUL_UN8 (s, m); return s; } static void combine_clear (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { memset (dest, 0, width * sizeof(uint32_t)); } static void combine_dst (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { return; } static void combine_src_u (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { int i; if (!mask) { memcpy (dest, src, width * sizeof (uint32_t)); } else { for (i = 0; i < width; ++i) { uint32_t s = combine_mask (src, mask, i); *(dest + i) = s; } } } static void combine_over_u (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { int i; if (!mask) { for (i = 0; i < width; ++i) { uint32_t s = *(src + i); uint32_t a = ALPHA_8 (s); if (a == 0xFF) { *(dest + i) = s; } else if (s) { uint32_t d = *(dest + i); uint32_t ia = a ^ 0xFF; UN8x4_MUL_UN8_ADD_UN8x4 (d, ia, s); *(dest + i) = d; } } } else { for (i = 0; i < width; ++i) { uint32_t m = ALPHA_8 (*(mask + i)); if (m == 0xFF) { uint32_t s = *(src + i); uint32_t a = ALPHA_8 (s); if (a == 0xFF) { *(dest + i) = s; } else if (s) { uint32_t d = *(dest + i); uint32_t ia = a ^ 0xFF; UN8x4_MUL_UN8_ADD_UN8x4 (d, ia, s); *(dest + i) = d; } } else if (m) { uint32_t s = *(src + i); if (s) { uint32_t d = *(dest + i); UN8x4_MUL_UN8 (s, m); UN8x4_MUL_UN8_ADD_UN8x4 (d, ALPHA_8 (~s), s); *(dest + i) = d; } } } } } static void combine_over_reverse_u (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { int i; for (i = 0; i < width; ++i) { uint32_t s = combine_mask (src, mask, i); uint32_t d = *(dest + i); uint32_t ia = ALPHA_8 (~*(dest + i)); UN8x4_MUL_UN8_ADD_UN8x4 (s, ia, d); *(dest + i) = s; } } static void combine_in_u (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { int i; for (i = 0; i < width; ++i) { uint32_t s = combine_mask (src, mask, i); uint32_t a = ALPHA_8 (*(dest + i)); UN8x4_MUL_UN8 (s, a); *(dest + i) = s; } } static void combine_in_reverse_u (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { int i; for (i = 0; i < width; ++i) { uint32_t s = combine_mask (src, mask, i); uint32_t d = *(dest + i); uint32_t a = ALPHA_8 (s); UN8x4_MUL_UN8 (d, a); *(dest + i) = d; } } static void combine_out_u (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { int i; for (i = 0; i < width; ++i) { uint32_t s = combine_mask (src, mask, i); uint32_t a = ALPHA_8 (~*(dest + i)); UN8x4_MUL_UN8 (s, a); *(dest + i) = s; } } static void combine_out_reverse_u (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { int i; for (i = 0; i < width; ++i) { uint32_t s = combine_mask (src, mask, i); uint32_t d = *(dest + i); uint32_t a = ALPHA_8 (~s); UN8x4_MUL_UN8 (d, a); *(dest + i) = d; } } static void combine_atop_u (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { int i; for (i = 0; i < width; ++i) { uint32_t s = combine_mask (src, mask, i); uint32_t d = *(dest + i); uint32_t dest_a = ALPHA_8 (d); uint32_t src_ia = ALPHA_8 (~s); UN8x4_MUL_UN8_ADD_UN8x4_MUL_UN8 (s, dest_a, d, src_ia); *(dest + i) = s; } } static void combine_atop_reverse_u (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { int i; for (i = 0; i < width; ++i) { uint32_t s = combine_mask (src, mask, i); uint32_t d = *(dest + i); uint32_t src_a = ALPHA_8 (s); uint32_t dest_ia = ALPHA_8 (~d); UN8x4_MUL_UN8_ADD_UN8x4_MUL_UN8 (s, dest_ia, d, src_a); *(dest + i) = s; } } static void combine_xor_u (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { int i; for (i = 0; i < width; ++i) { uint32_t s = combine_mask (src, mask, i); uint32_t d = *(dest + i); uint32_t src_ia = ALPHA_8 (~s); uint32_t dest_ia = ALPHA_8 (~d); UN8x4_MUL_UN8_ADD_UN8x4_MUL_UN8 (s, dest_ia, d, src_ia); *(dest + i) = s; } } static void combine_add_u (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { int i; for (i = 0; i < width; ++i) { uint32_t s = combine_mask (src, mask, i); uint32_t d = *(dest + i); UN8x4_ADD_UN8x4 (d, s); *(dest + i) = d; } } static void combine_saturate_u (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { int i; for (i = 0; i < width; ++i) { uint32_t s = combine_mask (src, mask, i); uint32_t d = *(dest + i); uint16_t sa, da; sa = s >> A_SHIFT; da = ~d >> A_SHIFT; if (sa > da) { sa = DIV_UN8 (da, sa); UN8x4_MUL_UN8 (s, sa); } ; UN8x4_ADD_UN8x4 (d, s); *(dest + i) = d; } } /* * PDF blend modes: * The following blend modes have been taken from the PDF ISO 32000 * specification, which at this point in time is available from * http://www.adobe.com/devnet/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 * 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, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { int i; for (i = 0; i < width; ++i) { uint32_t s = combine_mask (src, mask, i); uint32_t d = *(dest + i); uint32_t ss = s; uint32_t src_ia = ALPHA_8 (~s); uint32_t dest_ia = ALPHA_8 (~d); UN8x4_MUL_UN8_ADD_UN8x4_MUL_UN8 (ss, dest_ia, d, src_ia); UN8x4_MUL_UN8x4 (d, s); UN8x4_ADD_UN8x4 (d, ss); *(dest + i) = d; } } static void combine_multiply_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { int i; for (i = 0; i < width; ++i) { uint32_t m = *(mask + i); uint32_t s = *(src + i); uint32_t d = *(dest + i); uint32_t r = d; uint32_t dest_ia = ALPHA_8 (~d); combine_mask_ca (&s, &m); UN8x4_MUL_UN8x4_ADD_UN8x4_MUL_UN8 (r, ~m, s, dest_ia); UN8x4_MUL_UN8x4 (d, s); UN8x4_ADD_UN8x4 (r, d); *(dest + i) = r; } } #define PDF_SEPARABLE_BLEND_MODE(name) \ static void \ combine_ ## name ## _u (pixman_implementation_t *imp, \ pixman_op_t op, \ uint32_t * dest, \ const uint32_t * src, \ const uint32_t * mask, \ int width) \ { \ int i; \ for (i = 0; i < width; ++i) { \ uint32_t s = combine_mask (src, mask, i); \ uint32_t d = *(dest + i); \ uint8_t sa = ALPHA_8 (s); \ uint8_t isa = ~sa; \ uint8_t da = ALPHA_8 (d); \ uint8_t ida = ~da; \ uint32_t result; \ \ result = d; \ UN8x4_MUL_UN8_ADD_UN8x4_MUL_UN8 (result, isa, s, ida); \ \ *(dest + i) = result + \ (DIV_ONE_UN8 (sa * (uint32_t)da) << A_SHIFT) + \ (blend_ ## name (RED_8 (d), da, RED_8 (s), sa) << R_SHIFT) + \ (blend_ ## name (GREEN_8 (d), da, GREEN_8 (s), sa) << G_SHIFT) + \ (blend_ ## name (BLUE_8 (d), da, BLUE_8 (s), sa)); \ } \ } \ \ static void \ combine_ ## name ## _ca (pixman_implementation_t *imp, \ pixman_op_t op, \ uint32_t * dest, \ const uint32_t * src, \ const uint32_t * mask, \ int width) \ { \ int i; \ for (i = 0; i < width; ++i) { \ uint32_t m = *(mask + i); \ uint32_t s = *(src + i); \ uint32_t d = *(dest + i); \ uint8_t da = ALPHA_8 (d); \ uint8_t ida = ~da; \ uint32_t result; \ \ combine_mask_ca (&s, &m); \ \ result = d; \ UN8x4_MUL_UN8x4_ADD_UN8x4_MUL_UN8 (result, ~m, s, ida); \ \ result += \ (DIV_ONE_UN8 (ALPHA_8 (m) * (uint32_t)da) << A_SHIFT) + \ (blend_ ## name (RED_8 (d), da, RED_8 (s), RED_8 (m)) << R_SHIFT) + \ (blend_ ## name (GREEN_8 (d), da, GREEN_8 (s), GREEN_8 (m)) << G_SHIFT) + \ (blend_ ## name (BLUE_8 (d), da, BLUE_8 (s), BLUE_8 (m))); \ \ *(dest + i) = result; \ } \ } /* * Screen * B(Dca, ad, Sca, as) = Dca.sa + Sca.da - Dca.Sca */ static inline uint32_t blend_screen (uint32_t dca, uint32_t da, uint32_t sca, uint32_t sa) { return DIV_ONE_UN8 (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 uint32_t blend_overlay (uint32_t dca, uint32_t da, uint32_t sca, uint32_t sa) { uint32_t rca; if (2 * dca < da) rca = 2 * sca * dca; else rca = sa * da - 2 * (da - dca) * (sa - sca); return DIV_ONE_UN8 (rca); } PDF_SEPARABLE_BLEND_MODE (overlay) /* * Darken * B(Dca, Da, Sca, Sa) = min (Sca.Da, Dca.Sa) */ static inline uint32_t blend_darken (uint32_t dca, uint32_t da, uint32_t sca, uint32_t sa) { uint32_t s, d; s = sca * da; d = dca * sa; return DIV_ONE_UN8 (s > d ? d : s); } PDF_SEPARABLE_BLEND_MODE (darken) /* * Lighten * B(Dca, Da, Sca, Sa) = max (Sca.Da, Dca.Sa) */ static inline uint32_t blend_lighten (uint32_t dca, uint32_t da, uint32_t sca, uint32_t sa) { uint32_t s, d; s = sca * da; d = dca * sa; return DIV_ONE_UN8 (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 uint32_t blend_color_dodge (uint32_t dca, uint32_t da, uint32_t sca, uint32_t sa) { if (sca >= sa) { return dca == 0 ? 0 : DIV_ONE_UN8 (sa * da); } else { uint32_t rca = dca * sa / (sa - sca); return DIV_ONE_UN8 (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 uint32_t blend_color_burn (uint32_t dca, uint32_t da, uint32_t sca, uint32_t sa) { if (sca == 0) { return dca < da ? 0 : DIV_ONE_UN8 (sa * da); } else { uint32_t rca = (da - dca) * sa / sca; return DIV_ONE_UN8 (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 uint32_t blend_hard_light (uint32_t dca, uint32_t da, uint32_t sca, uint32_t sa) { if (2 * sca < sa) return DIV_ONE_UN8 (2 * sca * dca); else return DIV_ONE_UN8 (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 uint32_t blend_soft_light (uint32_t dca_org, uint32_t da_org, uint32_t sca_org, uint32_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 uint32_t blend_difference (uint32_t dca, uint32_t da, uint32_t sca, uint32_t sa) { uint32_t dcasa = dca * sa; uint32_t scada = sca * da; if (scada < dcasa) return DIV_ONE_UN8 (dcasa - scada); else return DIV_ONE_UN8 (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 uint32_t blend_exclusion (uint32_t dca, uint32_t da, uint32_t sca, uint32_t sa) { return DIV_ONE_UN8 (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 the x'es in the fraction for * C_mid cancel out. Specifically, it holds for x = r: * * r * set_sat (C, s) = set_sat (r_c, 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) * = 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, \ uint32_t *dest, \ const uint32_t *src, \ const uint32_t *mask, \ int width) \ { \ int i; \ for (i = 0; i < width; ++i) \ { \ uint32_t s = combine_mask (src, mask, i); \ uint32_t d = *(dest + i); \ uint8_t sa = ALPHA_8 (s); \ uint8_t isa = ~sa; \ uint8_t da = ALPHA_8 (d); \ uint8_t ida = ~da; \ uint32_t result; \ uint32_t sc[3], dc[3], c[3]; \ \ result = d; \ UN8x4_MUL_UN8_ADD_UN8x4_MUL_UN8 (result, isa, s, ida); \ dc[0] = RED_8 (d); \ sc[0] = RED_8 (s); \ dc[1] = GREEN_8 (d); \ sc[1] = GREEN_8 (s); \ dc[2] = BLUE_8 (d); \ sc[2] = BLUE_8 (s); \ blend_ ## name (c, dc, da, sc, sa); \ \ *(dest + i) = result + \ (DIV_ONE_UN8 (sa * (uint32_t)da) << A_SHIFT) + \ (DIV_ONE_UN8 (c[0]) << R_SHIFT) + \ (DIV_ONE_UN8 (c[1]) << G_SHIFT) + \ (DIV_ONE_UN8 (c[2])); \ } \ } static void set_lum (uint32_t dest[3], uint32_t src[3], uint32_t sa, uint32_t lum) { double a, l, min, max; double tmp[3]; a = sa * (1.0 / MASK); l = lum * (1.0 / MASK); tmp[0] = src[0] * (1.0 / MASK); tmp[1] = src[1] * (1.0 / MASK); tmp[2] = src[2] * (1.0 / MASK); l = l - LUM (tmp); tmp[0] += l; tmp[1] += l; tmp[2] += l; /* clip_color */ l = LUM (tmp); min = CH_MIN (tmp); max = CH_MAX (tmp); if (min < 0) { if (l - min == 0.0) { tmp[0] = 0; tmp[1] = 0; tmp[2] = 0; } else { tmp[0] = l + (tmp[0] - l) * l / (l - min); tmp[1] = l + (tmp[1] - l) * l / (l - min); tmp[2] = l + (tmp[2] - l) * l / (l - min); } } if (max > a) { if (max - l == 0.0) { tmp[0] = a; tmp[1] = a; tmp[2] = a; } else { tmp[0] = l + (tmp[0] - l) * (a - l) / (max - l); tmp[1] = l + (tmp[1] - l) * (a - l) / (max - l); tmp[2] = l + (tmp[2] - l) * (a - l) / (max - l); } } dest[0] = tmp[0] * MASK + 0.5; dest[1] = tmp[1] * MASK + 0.5; dest[2] = tmp[2] * MASK + 0.5; } static void set_sat (uint32_t dest[3], uint32_t src[3], uint32_t sat) { int id[3]; uint32_t min, max; if (src[0] > src[1]) { if (src[0] > src[2]) { id[0] = 0; if (src[1] > src[2]) { id[1] = 1; id[2] = 2; } else { id[1] = 2; id[2] = 1; } } else { id[0] = 2; id[1] = 0; id[2] = 1; } } else { if (src[0] > src[2]) { id[0] = 1; id[1] = 0; id[2] = 2; } else { id[2] = 0; if (src[1] > src[2]) { id[0] = 1; id[1] = 2; } else { id[0] = 2; id[1] = 1; } } } max = dest[id[0]]; min = dest[id[2]]; if (max > min) { dest[id[1]] = (dest[id[1]] - min) * sat / (max - min); dest[id[0]] = sat; dest[id[2]] = 0; } else { dest[0] = dest[1] = dest[2] = 0; } } /* * Hue: * B(Cb, Cs) = set_lum (set_sat (Cs, SAT (Cb)), LUM (Cb)) */ static inline void blend_hsl_hue (uint32_t c[3], uint32_t dc[3], uint32_t da, uint32_t sc[3], uint32_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 (uint32_t c[3], uint32_t dc[3], uint32_t da, uint32_t sc[3], uint32_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 (uint32_t c[3], uint32_t dc[3], uint32_t da, uint32_t sc[3], uint32_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 (uint32_t c[3], uint32_t dc[3], uint32_t da, uint32_t sc[3], uint32_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 /* All of the disjoint/conjoint composing functions * * The four entries in the first column indicate what source contributions * come from each of the four areas of the picture -- areas covered by neither * A nor B, areas covered only by A, areas covered only by B and finally * areas covered by both A and B. * * Disjoint Conjoint * Fa Fb Fa Fb * (0,0,0,0) 0 0 0 0 * (0,A,0,A) 1 0 1 0 * (0,0,B,B) 0 1 0 1 * (0,A,B,A) 1 min((1-a)/b,1) 1 max(1-a/b,0) * (0,A,B,B) min((1-b)/a,1) 1 max(1-b/a,0) 1 * (0,0,0,A) max(1-(1-b)/a,0) 0 min(1,b/a) 0 * (0,0,0,B) 0 max(1-(1-a)/b,0) 0 min(a/b,1) * (0,A,0,0) min(1,(1-b)/a) 0 max(1-b/a,0) 0 * (0,0,B,0) 0 min(1,(1-a)/b) 0 max(1-a/b,0) * (0,0,B,A) max(1-(1-b)/a,0) min(1,(1-a)/b) min(1,b/a) max(1-a/b,0) * (0,A,0,B) min(1,(1-b)/a) max(1-(1-a)/b,0) max(1-b/a,0) min(1,a/b) * (0,A,B,0) min(1,(1-b)/a) min(1,(1-a)/b) max(1-b/a,0) max(1-a/b,0) * * See http://marc.info/?l=xfree-render&m=99792000027857&w=2 for more * information about these operators. */ #define COMBINE_A_OUT 1 #define COMBINE_A_IN 2 #define COMBINE_B_OUT 4 #define COMBINE_B_IN 8 #define COMBINE_CLEAR 0 #define COMBINE_A (COMBINE_A_OUT | COMBINE_A_IN) #define COMBINE_B (COMBINE_B_OUT | COMBINE_B_IN) #define COMBINE_A_OVER (COMBINE_A_OUT | COMBINE_B_OUT | COMBINE_A_IN) #define COMBINE_B_OVER (COMBINE_A_OUT | COMBINE_B_OUT | COMBINE_B_IN) #define COMBINE_A_ATOP (COMBINE_B_OUT | COMBINE_A_IN) #define COMBINE_B_ATOP (COMBINE_A_OUT | COMBINE_B_IN) #define COMBINE_XOR (COMBINE_A_OUT | COMBINE_B_OUT) /* portion covered by a but not b */ static uint8_t combine_disjoint_out_part (uint8_t a, uint8_t b) { /* min (1, (1-b) / a) */ b = ~b; /* 1 - b */ if (b >= a) /* 1 - b >= a -> (1-b)/a >= 1 */ return MASK; /* 1 */ return DIV_UN8 (b, a); /* (1-b) / a */ } /* portion covered by both a and b */ static uint8_t combine_disjoint_in_part (uint8_t a, uint8_t b) { /* max (1-(1-b)/a,0) */ /* = - min ((1-b)/a - 1, 0) */ /* = 1 - min (1, (1-b)/a) */ b = ~b; /* 1 - b */ if (b >= a) /* 1 - b >= a -> (1-b)/a >= 1 */ return 0; /* 1 - 1 */ return ~DIV_UN8(b, a); /* 1 - (1-b) / a */ } /* portion covered by a but not b */ static uint8_t combine_conjoint_out_part (uint8_t a, uint8_t b) { /* max (1-b/a,0) */ /* = 1-min(b/a,1) */ /* min (1, (1-b) / a) */ if (b >= a) /* b >= a -> b/a >= 1 */ return 0x00; /* 0 */ return ~DIV_UN8(b, a); /* 1 - b/a */ } /* portion covered by both a and b */ static uint8_t combine_conjoint_in_part (uint8_t a, uint8_t b) { /* min (1,b/a) */ if (b >= a) /* b >= a -> b/a >= 1 */ return MASK; /* 1 */ return DIV_UN8 (b, a); /* b/a */ } #define GET_COMP(v, i) ((uint16_t) (uint8_t) ((v) >> i)) #define ADD(x, y, i, t) \ ((t) = GET_COMP (x, i) + GET_COMP (y, i), \ (uint32_t) ((uint8_t) ((t) | (0 - ((t) >> G_SHIFT)))) << (i)) #define GENERIC(x, y, i, ax, ay, t, u, v) \ ((t) = (MUL_UN8 (GET_COMP (y, i), ay, (u)) + \ MUL_UN8 (GET_COMP (x, i), ax, (v))), \ (uint32_t) ((uint8_t) ((t) | \ (0 - ((t) >> G_SHIFT)))) << (i)) static void combine_disjoint_general_u (uint32_t * dest, const uint32_t *src, const uint32_t *mask, int width, uint8_t combine) { int i; for (i = 0; i < width; ++i) { uint32_t s = combine_mask (src, mask, i); uint32_t d = *(dest + i); uint32_t m, n, o, p; uint16_t Fa, Fb, t, u, v; uint8_t sa = s >> A_SHIFT; uint8_t da = d >> A_SHIFT; switch (combine & COMBINE_A) { default: Fa = 0; break; case COMBINE_A_OUT: Fa = combine_disjoint_out_part (sa, da); break; case COMBINE_A_IN: Fa = combine_disjoint_in_part (sa, da); break; case COMBINE_A: Fa = MASK; break; } switch (combine & COMBINE_B) { default: Fb = 0; break; case COMBINE_B_OUT: Fb = combine_disjoint_out_part (da, sa); break; case COMBINE_B_IN: Fb = combine_disjoint_in_part (da, sa); break; case COMBINE_B: Fb = MASK; break; } m = GENERIC (s, d, 0, Fa, Fb, t, u, v); n = GENERIC (s, d, G_SHIFT, Fa, Fb, t, u, v); o = GENERIC (s, d, R_SHIFT, Fa, Fb, t, u, v); p = GENERIC (s, d, A_SHIFT, Fa, Fb, t, u, v); s = m | n | o | p; *(dest + i) = s; } } static void combine_disjoint_over_u (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { int i; for (i = 0; i < width; ++i) { uint32_t s = combine_mask (src, mask, i); uint16_t a = s >> A_SHIFT; if (s != 0x00) { uint32_t d = *(dest + i); a = combine_disjoint_out_part (d >> A_SHIFT, a); UN8x4_MUL_UN8_ADD_UN8x4 (d, a, s); *(dest + i) = d; } } } static void combine_disjoint_in_u (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_disjoint_general_u (dest, src, mask, width, COMBINE_A_IN); } static void combine_disjoint_in_reverse_u (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_disjoint_general_u (dest, src, mask, width, COMBINE_B_IN); } static void combine_disjoint_out_u (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_disjoint_general_u (dest, src, mask, width, COMBINE_A_OUT); } static void combine_disjoint_out_reverse_u (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_disjoint_general_u (dest, src, mask, width, COMBINE_B_OUT); } static void combine_disjoint_atop_u (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_disjoint_general_u (dest, src, mask, width, COMBINE_A_ATOP); } static void combine_disjoint_atop_reverse_u (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_disjoint_general_u (dest, src, mask, width, COMBINE_B_ATOP); } static void combine_disjoint_xor_u (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_disjoint_general_u (dest, src, mask, width, COMBINE_XOR); } static void combine_conjoint_general_u (uint32_t * dest, const uint32_t *src, const uint32_t *mask, int width, uint8_t combine) { int i; for (i = 0; i < width; ++i) { uint32_t s = combine_mask (src, mask, i); uint32_t d = *(dest + i); uint32_t m, n, o, p; uint16_t Fa, Fb, t, u, v; uint8_t sa = s >> A_SHIFT; uint8_t da = d >> A_SHIFT; switch (combine & COMBINE_A) { default: Fa = 0; break; case COMBINE_A_OUT: Fa = combine_conjoint_out_part (sa, da); break; case COMBINE_A_IN: Fa = combine_conjoint_in_part (sa, da); break; case COMBINE_A: Fa = MASK; break; } switch (combine & COMBINE_B) { default: Fb = 0; break; case COMBINE_B_OUT: Fb = combine_conjoint_out_part (da, sa); break; case COMBINE_B_IN: Fb = combine_conjoint_in_part (da, sa); break; case COMBINE_B: Fb = MASK; break; } m = GENERIC (s, d, 0, Fa, Fb, t, u, v); n = GENERIC (s, d, G_SHIFT, Fa, Fb, t, u, v); o = GENERIC (s, d, R_SHIFT, Fa, Fb, t, u, v); p = GENERIC (s, d, A_SHIFT, Fa, Fb, t, u, v); s = m | n | o | p; *(dest + i) = s; } } static void combine_conjoint_over_u (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_conjoint_general_u (dest, src, mask, width, COMBINE_A_OVER); } static void combine_conjoint_over_reverse_u (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_conjoint_general_u (dest, src, mask, width, COMBINE_B_OVER); } static void combine_conjoint_in_u (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_conjoint_general_u (dest, src, mask, width, COMBINE_A_IN); } static void combine_conjoint_in_reverse_u (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_conjoint_general_u (dest, src, mask, width, COMBINE_B_IN); } static void combine_conjoint_out_u (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_conjoint_general_u (dest, src, mask, width, COMBINE_A_OUT); } static void combine_conjoint_out_reverse_u (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_conjoint_general_u (dest, src, mask, width, COMBINE_B_OUT); } static void combine_conjoint_atop_u (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_conjoint_general_u (dest, src, mask, width, COMBINE_A_ATOP); } static void combine_conjoint_atop_reverse_u (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_conjoint_general_u (dest, src, mask, width, COMBINE_B_ATOP); } static void combine_conjoint_xor_u (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_conjoint_general_u (dest, src, mask, width, COMBINE_XOR); } /* Component alpha combiners */ static void combine_clear_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { memset (dest, 0, width * sizeof(uint32_t)); } static void combine_src_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { int i; for (i = 0; i < width; ++i) { uint32_t s = *(src + i); uint32_t m = *(mask + i); combine_mask_value_ca (&s, &m); *(dest + i) = s; } } static void combine_over_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { int i; for (i = 0; i < width; ++i) { uint32_t s = *(src + i); uint32_t m = *(mask + i); uint32_t a; combine_mask_ca (&s, &m); a = ~m; if (a) { uint32_t d = *(dest + i); UN8x4_MUL_UN8x4_ADD_UN8x4 (d, a, s); s = d; } *(dest + i) = s; } } static void combine_over_reverse_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { int i; for (i = 0; i < width; ++i) { uint32_t d = *(dest + i); uint32_t a = ~d >> A_SHIFT; if (a) { uint32_t s = *(src + i); uint32_t m = *(mask + i); UN8x4_MUL_UN8x4 (s, m); UN8x4_MUL_UN8_ADD_UN8x4 (s, a, d); *(dest + i) = s; } } } static void combine_in_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { int i; for (i = 0; i < width; ++i) { uint32_t d = *(dest + i); uint16_t a = d >> A_SHIFT; uint32_t s = 0; if (a) { uint32_t m = *(mask + i); s = *(src + i); combine_mask_value_ca (&s, &m); if (a != MASK) UN8x4_MUL_UN8 (s, a); } *(dest + i) = s; } } static void combine_in_reverse_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { int i; for (i = 0; i < width; ++i) { uint32_t s = *(src + i); uint32_t m = *(mask + i); uint32_t a; combine_mask_alpha_ca (&s, &m); a = m; if (a != ~0) { uint32_t d = 0; if (a) { d = *(dest + i); UN8x4_MUL_UN8x4 (d, a); } *(dest + i) = d; } } } static void combine_out_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { int i; for (i = 0; i < width; ++i) { uint32_t d = *(dest + i); uint16_t a = ~d >> A_SHIFT; uint32_t s = 0; if (a) { uint32_t m = *(mask + i); s = *(src + i); combine_mask_value_ca (&s, &m); if (a != MASK) UN8x4_MUL_UN8 (s, a); } *(dest + i) = s; } } static void combine_out_reverse_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { int i; for (i = 0; i < width; ++i) { uint32_t s = *(src + i); uint32_t m = *(mask + i); uint32_t a; combine_mask_alpha_ca (&s, &m); a = ~m; if (a != ~0) { uint32_t d = 0; if (a) { d = *(dest + i); UN8x4_MUL_UN8x4 (d, a); } *(dest + i) = d; } } } static void combine_atop_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { int i; for (i = 0; i < width; ++i) { uint32_t d = *(dest + i); uint32_t s = *(src + i); uint32_t m = *(mask + i); uint32_t ad; uint16_t as = d >> A_SHIFT; combine_mask_ca (&s, &m); ad = ~m; UN8x4_MUL_UN8x4_ADD_UN8x4_MUL_UN8 (d, ad, s, as); *(dest + i) = d; } } static void combine_atop_reverse_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { int i; for (i = 0; i < width; ++i) { uint32_t d = *(dest + i); uint32_t s = *(src + i); uint32_t m = *(mask + i); uint32_t ad; uint16_t as = ~d >> A_SHIFT; combine_mask_ca (&s, &m); ad = m; UN8x4_MUL_UN8x4_ADD_UN8x4_MUL_UN8 (d, ad, s, as); *(dest + i) = d; } } static void combine_xor_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { int i; for (i = 0; i < width; ++i) { uint32_t d = *(dest + i); uint32_t s = *(src + i); uint32_t m = *(mask + i); uint32_t ad; uint16_t as = ~d >> A_SHIFT; combine_mask_ca (&s, &m); ad = ~m; UN8x4_MUL_UN8x4_ADD_UN8x4_MUL_UN8 (d, ad, s, as); *(dest + i) = d; } } static void combine_add_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { int i; for (i = 0; i < width; ++i) { uint32_t s = *(src + i); uint32_t m = *(mask + i); uint32_t d = *(dest + i); combine_mask_value_ca (&s, &m); UN8x4_ADD_UN8x4 (d, s); *(dest + i) = d; } } static void combine_saturate_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { int i; for (i = 0; i < width; ++i) { uint32_t s, d; uint16_t sa, sr, sg, sb, da; uint16_t t, u, v; uint32_t m, n, o, p; d = *(dest + i); s = *(src + i); m = *(mask + i); combine_mask_ca (&s, &m); sa = (m >> A_SHIFT); sr = (m >> R_SHIFT) & MASK; sg = (m >> G_SHIFT) & MASK; sb = m & MASK; da = ~d >> A_SHIFT; if (sb <= da) m = ADD (s, d, 0, t); else m = GENERIC (s, d, 0, (da << G_SHIFT) / sb, MASK, t, u, v); if (sg <= da) n = ADD (s, d, G_SHIFT, t); else n = GENERIC (s, d, G_SHIFT, (da << G_SHIFT) / sg, MASK, t, u, v); if (sr <= da) o = ADD (s, d, R_SHIFT, t); else o = GENERIC (s, d, R_SHIFT, (da << G_SHIFT) / sr, MASK, t, u, v); if (sa <= da) p = ADD (s, d, A_SHIFT, t); else p = GENERIC (s, d, A_SHIFT, (da << G_SHIFT) / sa, MASK, t, u, v); *(dest + i) = m | n | o | p; } } static void combine_disjoint_general_ca (uint32_t * dest, const uint32_t *src, const uint32_t *mask, int width, uint8_t combine) { int i; for (i = 0; i < width; ++i) { uint32_t s, d; uint32_t m, n, o, p; uint32_t Fa, Fb; uint16_t t, u, v; uint32_t sa; uint8_t da; s = *(src + i); m = *(mask + i); d = *(dest + i); da = d >> A_SHIFT; combine_mask_ca (&s, &m); sa = m; switch (combine & COMBINE_A) { default: Fa = 0; break; case COMBINE_A_OUT: m = (uint32_t)combine_disjoint_out_part ((uint8_t) (sa >> 0), da); n = (uint32_t)combine_disjoint_out_part ((uint8_t) (sa >> G_SHIFT), da) << G_SHIFT; o = (uint32_t)combine_disjoint_out_part ((uint8_t) (sa >> R_SHIFT), da) << R_SHIFT; p = (uint32_t)combine_disjoint_out_part ((uint8_t) (sa >> A_SHIFT), da) << A_SHIFT; Fa = m | n | o | p; break; case COMBINE_A_IN: m = (uint32_t)combine_disjoint_in_part ((uint8_t) (sa >> 0), da); n = (uint32_t)combine_disjoint_in_part ((uint8_t) (sa >> G_SHIFT), da) << G_SHIFT; o = (uint32_t)combine_disjoint_in_part ((uint8_t) (sa >> R_SHIFT), da) << R_SHIFT; p = (uint32_t)combine_disjoint_in_part ((uint8_t) (sa >> A_SHIFT), da) << A_SHIFT; Fa = m | n | o | p; break; case COMBINE_A: Fa = ~0; break; } switch (combine & COMBINE_B) { default: Fb = 0; break; case COMBINE_B_OUT: m = (uint32_t)combine_disjoint_out_part (da, (uint8_t) (sa >> 0)); n = (uint32_t)combine_disjoint_out_part (da, (uint8_t) (sa >> G_SHIFT)) << G_SHIFT; o = (uint32_t)combine_disjoint_out_part (da, (uint8_t) (sa >> R_SHIFT)) << R_SHIFT; p = (uint32_t)combine_disjoint_out_part (da, (uint8_t) (sa >> A_SHIFT)) << A_SHIFT; Fb = m | n | o | p; break; case COMBINE_B_IN: m = (uint32_t)combine_disjoint_in_part (da, (uint8_t) (sa >> 0)); n = (uint32_t)combine_disjoint_in_part (da, (uint8_t) (sa >> G_SHIFT)) << G_SHIFT; o = (uint32_t)combine_disjoint_in_part (da, (uint8_t) (sa >> R_SHIFT)) << R_SHIFT; p = (uint32_t)combine_disjoint_in_part (da, (uint8_t) (sa >> A_SHIFT)) << A_SHIFT; Fb = m | n | o | p; break; case COMBINE_B: Fb = ~0; break; } m = GENERIC (s, d, 0, GET_COMP (Fa, 0), GET_COMP (Fb, 0), t, u, v); n = GENERIC (s, d, G_SHIFT, GET_COMP (Fa, G_SHIFT), GET_COMP (Fb, G_SHIFT), t, u, v); o = GENERIC (s, d, R_SHIFT, GET_COMP (Fa, R_SHIFT), GET_COMP (Fb, R_SHIFT), t, u, v); p = GENERIC (s, d, A_SHIFT, GET_COMP (Fa, A_SHIFT), GET_COMP (Fb, A_SHIFT), t, u, v); s = m | n | o | p; *(dest + i) = s; } } static void combine_disjoint_over_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_disjoint_general_ca (dest, src, mask, width, COMBINE_A_OVER); } static void combine_disjoint_in_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_disjoint_general_ca (dest, src, mask, width, COMBINE_A_IN); } static void combine_disjoint_in_reverse_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_disjoint_general_ca (dest, src, mask, width, COMBINE_B_IN); } static void combine_disjoint_out_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_disjoint_general_ca (dest, src, mask, width, COMBINE_A_OUT); } static void combine_disjoint_out_reverse_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_disjoint_general_ca (dest, src, mask, width, COMBINE_B_OUT); } static void combine_disjoint_atop_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_disjoint_general_ca (dest, src, mask, width, COMBINE_A_ATOP); } static void combine_disjoint_atop_reverse_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_disjoint_general_ca (dest, src, mask, width, COMBINE_B_ATOP); } static void combine_disjoint_xor_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_disjoint_general_ca (dest, src, mask, width, COMBINE_XOR); } static void combine_conjoint_general_ca (uint32_t * dest, const uint32_t *src, const uint32_t *mask, int width, uint8_t combine) { int i; for (i = 0; i < width; ++i) { uint32_t s, d; uint32_t m, n, o, p; uint32_t Fa, Fb; uint16_t t, u, v; uint32_t sa; uint8_t da; s = *(src + i); m = *(mask + i); d = *(dest + i); da = d >> A_SHIFT; combine_mask_ca (&s, &m); sa = m; switch (combine & COMBINE_A) { default: Fa = 0; break; case COMBINE_A_OUT: m = (uint32_t)combine_conjoint_out_part ((uint8_t) (sa >> 0), da); n = (uint32_t)combine_conjoint_out_part ((uint8_t) (sa >> G_SHIFT), da) << G_SHIFT; o = (uint32_t)combine_conjoint_out_part ((uint8_t) (sa >> R_SHIFT), da) << R_SHIFT; p = (uint32_t)combine_conjoint_out_part ((uint8_t) (sa >> A_SHIFT), da) << A_SHIFT; Fa = m | n | o | p; break; case COMBINE_A_IN: m = (uint32_t)combine_conjoint_in_part ((uint8_t) (sa >> 0), da); n = (uint32_t)combine_conjoint_in_part ((uint8_t) (sa >> G_SHIFT), da) << G_SHIFT; o = (uint32_t)combine_conjoint_in_part ((uint8_t) (sa >> R_SHIFT), da) << R_SHIFT; p = (uint32_t)combine_conjoint_in_part ((uint8_t) (sa >> A_SHIFT), da) << A_SHIFT; Fa = m | n | o | p; break; case COMBINE_A: Fa = ~0; break; } switch (combine & COMBINE_B) { default: Fb = 0; break; case COMBINE_B_OUT: m = (uint32_t)combine_conjoint_out_part (da, (uint8_t) (sa >> 0)); n = (uint32_t)combine_conjoint_out_part (da, (uint8_t) (sa >> G_SHIFT)) << G_SHIFT; o = (uint32_t)combine_conjoint_out_part (da, (uint8_t) (sa >> R_SHIFT)) << R_SHIFT; p = (uint32_t)combine_conjoint_out_part (da, (uint8_t) (sa >> A_SHIFT)) << A_SHIFT; Fb = m | n | o | p; break; case COMBINE_B_IN: m = (uint32_t)combine_conjoint_in_part (da, (uint8_t) (sa >> 0)); n = (uint32_t)combine_conjoint_in_part (da, (uint8_t) (sa >> G_SHIFT)) << G_SHIFT; o = (uint32_t)combine_conjoint_in_part (da, (uint8_t) (sa >> R_SHIFT)) << R_SHIFT; p = (uint32_t)combine_conjoint_in_part (da, (uint8_t) (sa >> A_SHIFT)) << A_SHIFT; Fb = m | n | o | p; break; case COMBINE_B: Fb = ~0; break; } m = GENERIC (s, d, 0, GET_COMP (Fa, 0), GET_COMP (Fb, 0), t, u, v); n = GENERIC (s, d, G_SHIFT, GET_COMP (Fa, G_SHIFT), GET_COMP (Fb, G_SHIFT), t, u, v); o = GENERIC (s, d, R_SHIFT, GET_COMP (Fa, R_SHIFT), GET_COMP (Fb, R_SHIFT), t, u, v); p = GENERIC (s, d, A_SHIFT, GET_COMP (Fa, A_SHIFT), GET_COMP (Fb, A_SHIFT), t, u, v); s = m | n | o | p; *(dest + i) = s; } } static void combine_conjoint_over_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_conjoint_general_ca (dest, src, mask, width, COMBINE_A_OVER); } static void combine_conjoint_over_reverse_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_conjoint_general_ca (dest, src, mask, width, COMBINE_B_OVER); } static void combine_conjoint_in_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_conjoint_general_ca (dest, src, mask, width, COMBINE_A_IN); } static void combine_conjoint_in_reverse_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_conjoint_general_ca (dest, src, mask, width, COMBINE_B_IN); } static void combine_conjoint_out_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_conjoint_general_ca (dest, src, mask, width, COMBINE_A_OUT); } static void combine_conjoint_out_reverse_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_conjoint_general_ca (dest, src, mask, width, COMBINE_B_OUT); } static void combine_conjoint_atop_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_conjoint_general_ca (dest, src, mask, width, COMBINE_A_ATOP); } static void combine_conjoint_atop_reverse_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_conjoint_general_ca (dest, src, mask, width, COMBINE_B_ATOP); } static void combine_conjoint_xor_ca (pixman_implementation_t *imp, pixman_op_t op, uint32_t * dest, const uint32_t * src, const uint32_t * mask, int width) { combine_conjoint_general_ca (dest, src, mask, width, COMBINE_XOR); } void _pixman_setup_combiner_functions_32 (pixman_implementation_t *imp) { /* Unified alpha */ imp->combine_32[PIXMAN_OP_CLEAR] = combine_clear; imp->combine_32[PIXMAN_OP_SRC] = combine_src_u; imp->combine_32[PIXMAN_OP_DST] = combine_dst; imp->combine_32[PIXMAN_OP_OVER] = combine_over_u; imp->combine_32[PIXMAN_OP_OVER_REVERSE] = combine_over_reverse_u; imp->combine_32[PIXMAN_OP_IN] = combine_in_u; imp->combine_32[PIXMAN_OP_IN_REVERSE] = combine_in_reverse_u; imp->combine_32[PIXMAN_OP_OUT] = combine_out_u; imp->combine_32[PIXMAN_OP_OUT_REVERSE] = combine_out_reverse_u; imp->combine_32[PIXMAN_OP_ATOP] = combine_atop_u; imp->combine_32[PIXMAN_OP_ATOP_REVERSE] = combine_atop_reverse_u; imp->combine_32[PIXMAN_OP_XOR] = combine_xor_u; imp->combine_32[PIXMAN_OP_ADD] = combine_add_u; imp->combine_32[PIXMAN_OP_SATURATE] = combine_saturate_u; /* Disjoint, unified */ imp->combine_32[PIXMAN_OP_DISJOINT_CLEAR] = combine_clear; imp->combine_32[PIXMAN_OP_DISJOINT_SRC] = combine_src_u; imp->combine_32[PIXMAN_OP_DISJOINT_DST] = combine_dst; imp->combine_32[PIXMAN_OP_DISJOINT_OVER] = combine_disjoint_over_u; imp->combine_32[PIXMAN_OP_DISJOINT_OVER_REVERSE] = combine_saturate_u; imp->combine_32[PIXMAN_OP_DISJOINT_IN] = combine_disjoint_in_u; imp->combine_32[PIXMAN_OP_DISJOINT_IN_REVERSE] = combine_disjoint_in_reverse_u; imp->combine_32[PIXMAN_OP_DISJOINT_OUT] = combine_disjoint_out_u; imp->combine_32[PIXMAN_OP_DISJOINT_OUT_REVERSE] = combine_disjoint_out_reverse_u; imp->combine_32[PIXMAN_OP_DISJOINT_ATOP] = combine_disjoint_atop_u; imp->combine_32[PIXMAN_OP_DISJOINT_ATOP_REVERSE] = combine_disjoint_atop_reverse_u; imp->combine_32[PIXMAN_OP_DISJOINT_XOR] = combine_disjoint_xor_u; /* Conjoint, unified */ imp->combine_32[PIXMAN_OP_CONJOINT_CLEAR] = combine_clear; imp->combine_32[PIXMAN_OP_CONJOINT_SRC] = combine_src_u; imp->combine_32[PIXMAN_OP_CONJOINT_DST] = combine_dst; imp->combine_32[PIXMAN_OP_CONJOINT_OVER] = combine_conjoint_over_u; imp->combine_32[PIXMAN_OP_CONJOINT_OVER_REVERSE] = combine_conjoint_over_reverse_u; imp->combine_32[PIXMAN_OP_CONJOINT_IN] = combine_conjoint_in_u; imp->combine_32[PIXMAN_OP_CONJOINT_IN_REVERSE] = combine_conjoint_in_reverse_u; imp->combine_32[PIXMAN_OP_CONJOINT_OUT] = combine_conjoint_out_u; imp->combine_32[PIXMAN_OP_CONJOINT_OUT_REVERSE] = combine_conjoint_out_reverse_u; imp->combine_32[PIXMAN_OP_CONJOINT_ATOP] = combine_conjoint_atop_u; imp->combine_32[PIXMAN_OP_CONJOINT_ATOP_REVERSE] = combine_conjoint_atop_reverse_u; imp->combine_32[PIXMAN_OP_CONJOINT_XOR] = combine_conjoint_xor_u; imp->combine_32[PIXMAN_OP_MULTIPLY] = combine_multiply_u; imp->combine_32[PIXMAN_OP_SCREEN] = combine_screen_u; imp->combine_32[PIXMAN_OP_OVERLAY] = combine_overlay_u; imp->combine_32[PIXMAN_OP_DARKEN] = combine_darken_u; imp->combine_32[PIXMAN_OP_LIGHTEN] = combine_lighten_u; imp->combine_32[PIXMAN_OP_COLOR_DODGE] = combine_color_dodge_u; imp->combine_32[PIXMAN_OP_COLOR_BURN] = combine_color_burn_u; imp->combine_32[PIXMAN_OP_HARD_LIGHT] = combine_hard_light_u; imp->combine_32[PIXMAN_OP_SOFT_LIGHT] = combine_soft_light_u; imp->combine_32[PIXMAN_OP_DIFFERENCE] = combine_difference_u; imp->combine_32[PIXMAN_OP_EXCLUSION] = combine_exclusion_u; imp->combine_32[PIXMAN_OP_HSL_HUE] = combine_hsl_hue_u; imp->combine_32[PIXMAN_OP_HSL_SATURATION] = combine_hsl_saturation_u; imp->combine_32[PIXMAN_OP_HSL_COLOR] = combine_hsl_color_u; imp->combine_32[PIXMAN_OP_HSL_LUMINOSITY] = combine_hsl_luminosity_u; /* Component alpha combiners */ imp->combine_32_ca[PIXMAN_OP_CLEAR] = combine_clear_ca; imp->combine_32_ca[PIXMAN_OP_SRC] = combine_src_ca; /* dest */ imp->combine_32_ca[PIXMAN_OP_OVER] = combine_over_ca; imp->combine_32_ca[PIXMAN_OP_OVER_REVERSE] = combine_over_reverse_ca; imp->combine_32_ca[PIXMAN_OP_IN] = combine_in_ca; imp->combine_32_ca[PIXMAN_OP_IN_REVERSE] = combine_in_reverse_ca; imp->combine_32_ca[PIXMAN_OP_OUT] = combine_out_ca; imp->combine_32_ca[PIXMAN_OP_OUT_REVERSE] = combine_out_reverse_ca; imp->combine_32_ca[PIXMAN_OP_ATOP] = combine_atop_ca; imp->combine_32_ca[PIXMAN_OP_ATOP_REVERSE] = combine_atop_reverse_ca; imp->combine_32_ca[PIXMAN_OP_XOR] = combine_xor_ca; imp->combine_32_ca[PIXMAN_OP_ADD] = combine_add_ca; imp->combine_32_ca[PIXMAN_OP_SATURATE] = combine_saturate_ca; /* Disjoint CA */ imp->combine_32_ca[PIXMAN_OP_DISJOINT_CLEAR] = combine_clear_ca; imp->combine_32_ca[PIXMAN_OP_DISJOINT_SRC] = combine_src_ca; imp->combine_32_ca[PIXMAN_OP_DISJOINT_DST] = combine_dst; imp->combine_32_ca[PIXMAN_OP_DISJOINT_OVER] = combine_disjoint_over_ca; imp->combine_32_ca[PIXMAN_OP_DISJOINT_OVER_REVERSE] = combine_saturate_ca; imp->combine_32_ca[PIXMAN_OP_DISJOINT_IN] = combine_disjoint_in_ca; imp->combine_32_ca[PIXMAN_OP_DISJOINT_IN_REVERSE] = combine_disjoint_in_reverse_ca; imp->combine_32_ca[PIXMAN_OP_DISJOINT_OUT] = combine_disjoint_out_ca; imp->combine_32_ca[PIXMAN_OP_DISJOINT_OUT_REVERSE] = combine_disjoint_out_reverse_ca; imp->combine_32_ca[PIXMAN_OP_DISJOINT_ATOP] = combine_disjoint_atop_ca; imp->combine_32_ca[PIXMAN_OP_DISJOINT_ATOP_REVERSE] = combine_disjoint_atop_reverse_ca; imp->combine_32_ca[PIXMAN_OP_DISJOINT_XOR] = combine_disjoint_xor_ca; /* Conjoint CA */ imp->combine_32_ca[PIXMAN_OP_CONJOINT_CLEAR] = combine_clear_ca; imp->combine_32_ca[PIXMAN_OP_CONJOINT_SRC] = combine_src_ca; imp->combine_32_ca[PIXMAN_OP_CONJOINT_DST] = combine_dst; imp->combine_32_ca[PIXMAN_OP_CONJOINT_OVER] = combine_conjoint_over_ca; imp->combine_32_ca[PIXMAN_OP_CONJOINT_OVER_REVERSE] = combine_conjoint_over_reverse_ca; imp->combine_32_ca[PIXMAN_OP_CONJOINT_IN] = combine_conjoint_in_ca; imp->combine_32_ca[PIXMAN_OP_CONJOINT_IN_REVERSE] = combine_conjoint_in_reverse_ca; imp->combine_32_ca[PIXMAN_OP_CONJOINT_OUT] = combine_conjoint_out_ca; imp->combine_32_ca[PIXMAN_OP_CONJOINT_OUT_REVERSE] = combine_conjoint_out_reverse_ca; imp->combine_32_ca[PIXMAN_OP_CONJOINT_ATOP] = combine_conjoint_atop_ca; imp->combine_32_ca[PIXMAN_OP_CONJOINT_ATOP_REVERSE] = combine_conjoint_atop_reverse_ca; imp->combine_32_ca[PIXMAN_OP_CONJOINT_XOR] = combine_conjoint_xor_ca; imp->combine_32_ca[PIXMAN_OP_MULTIPLY] = combine_multiply_ca; imp->combine_32_ca[PIXMAN_OP_SCREEN] = combine_screen_ca; imp->combine_32_ca[PIXMAN_OP_OVERLAY] = combine_overlay_ca; imp->combine_32_ca[PIXMAN_OP_DARKEN] = combine_darken_ca; imp->combine_32_ca[PIXMAN_OP_LIGHTEN] = combine_lighten_ca; imp->combine_32_ca[PIXMAN_OP_COLOR_DODGE] = combine_color_dodge_ca; imp->combine_32_ca[PIXMAN_OP_COLOR_BURN] = combine_color_burn_ca; imp->combine_32_ca[PIXMAN_OP_HARD_LIGHT] = combine_hard_light_ca; imp->combine_32_ca[PIXMAN_OP_SOFT_LIGHT] = combine_soft_light_ca; imp->combine_32_ca[PIXMAN_OP_DIFFERENCE] = combine_difference_ca; imp->combine_32_ca[PIXMAN_OP_EXCLUSION] = combine_exclusion_ca; /* It is not clear that these make sense, so make them noops for now */ imp->combine_32_ca[PIXMAN_OP_HSL_HUE] = combine_dst; imp->combine_32_ca[PIXMAN_OP_HSL_SATURATION] = combine_dst; imp->combine_32_ca[PIXMAN_OP_HSL_COLOR] = combine_dst; imp->combine_32_ca[PIXMAN_OP_HSL_LUMINOSITY] = combine_dst; }