diff options
Diffstat (limited to 'libs/pixman-0.40.0/pixman/pixman-combine-float.c')
| -rw-r--r-- | libs/pixman-0.40.0/pixman/pixman-combine-float.c | 1158 |
1 files changed, 0 insertions, 1158 deletions
diff --git a/libs/pixman-0.40.0/pixman/pixman-combine-float.c b/libs/pixman-0.40.0/pixman/pixman-combine-float.c deleted file mode 100644 index f5145bc..0000000 --- a/libs/pixman-0.40.0/pixman/pixman-combine-float.c +++ /dev/null @@ -1,1158 +0,0 @@ -/* -*- Mode: c; c-basic-offset: 4; tab-width: 8; indent-tabs-mode: t; -*- */ -/* - * Copyright © 2010, 2012 Soren Sandmann Pedersen - * Copyright © 2010, 2012 Red Hat, Inc. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the next - * paragraph) shall be included in all copies or substantial portions of the - * Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - * DEALINGS IN THE SOFTWARE. - * - * Author: Soren Sandmann Pedersen (sandmann@cs.au.dk) - */ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif - -#include <math.h> -#include <string.h> -#include <float.h> - -#include "pixman-private.h" - -/* Workaround for http://gcc.gnu.org/PR54965 */ -/* GCC 4.6 has problems with force_inline, so just use normal inline instead */ -#if defined(__GNUC__) && (__GNUC__ == 4) && (__GNUC_MINOR__ == 6) -#undef force_inline -#define force_inline __inline__ -#endif - -typedef float (* combine_channel_t) (float sa, float s, float da, float d); - -static force_inline void -combine_inner (pixman_bool_t component, - float *dest, const float *src, const float *mask, int n_pixels, - combine_channel_t combine_a, combine_channel_t combine_c) -{ - int i; - - if (!mask) - { - for (i = 0; i < 4 * n_pixels; i += 4) - { - float sa = src[i + 0]; - float sr = src[i + 1]; - float sg = src[i + 2]; - float sb = src[i + 3]; - - float da = dest[i + 0]; - float dr = dest[i + 1]; - float dg = dest[i + 2]; - float db = dest[i + 3]; - - dest[i + 0] = combine_a (sa, sa, da, da); - dest[i + 1] = combine_c (sa, sr, da, dr); - dest[i + 2] = combine_c (sa, sg, da, dg); - dest[i + 3] = combine_c (sa, sb, da, db); - } - } - else - { - for (i = 0; i < 4 * n_pixels; i += 4) - { - float sa, sr, sg, sb; - float ma, mr, mg, mb; - float da, dr, dg, db; - - sa = src[i + 0]; - sr = src[i + 1]; - sg = src[i + 2]; - sb = src[i + 3]; - - if (component) - { - ma = mask[i + 0]; - mr = mask[i + 1]; - mg = mask[i + 2]; - mb = mask[i + 3]; - - sr *= mr; - sg *= mg; - sb *= mb; - - ma *= sa; - mr *= sa; - mg *= sa; - mb *= sa; - - sa = ma; - } - else - { - ma = mask[i + 0]; - - sa *= ma; - sr *= ma; - sg *= ma; - sb *= ma; - - ma = mr = mg = mb = sa; - } - - da = dest[i + 0]; - dr = dest[i + 1]; - dg = dest[i + 2]; - db = dest[i + 3]; - - dest[i + 0] = combine_a (ma, sa, da, da); - dest[i + 1] = combine_c (mr, sr, da, dr); - dest[i + 2] = combine_c (mg, sg, da, dg); - dest[i + 3] = combine_c (mb, sb, da, db); - } - } -} - -#define MAKE_COMBINER(name, component, combine_a, combine_c) \ - static void \ - combine_ ## name ## _float (pixman_implementation_t *imp, \ - pixman_op_t op, \ - float *dest, \ - const float *src, \ - const float *mask, \ - int n_pixels) \ - { \ - combine_inner (component, dest, src, mask, n_pixels, \ - combine_a, combine_c); \ - } - -#define MAKE_COMBINERS(name, combine_a, combine_c) \ - MAKE_COMBINER(name ## _ca, TRUE, combine_a, combine_c) \ - MAKE_COMBINER(name ## _u, FALSE, combine_a, combine_c) - - -/* - * Porter/Duff operators - */ -typedef enum -{ - ZERO, - ONE, - SRC_ALPHA, - DEST_ALPHA, - INV_SA, - INV_DA, - SA_OVER_DA, - DA_OVER_SA, - INV_SA_OVER_DA, - INV_DA_OVER_SA, - ONE_MINUS_SA_OVER_DA, - ONE_MINUS_DA_OVER_SA, - ONE_MINUS_INV_DA_OVER_SA, - ONE_MINUS_INV_SA_OVER_DA -} combine_factor_t; - -#define CLAMP(f) \ - (((f) < 0)? 0 : (((f) > 1.0) ? 1.0 : (f))) - -static force_inline float -get_factor (combine_factor_t factor, float sa, float da) -{ - float f = -1; - - switch (factor) - { - case ZERO: - f = 0.0f; - break; - - case ONE: - f = 1.0f; - break; - - case SRC_ALPHA: - f = sa; - break; - - case DEST_ALPHA: - f = da; - break; - - case INV_SA: - f = 1 - sa; - break; - - case INV_DA: - f = 1 - da; - break; - - case SA_OVER_DA: - if (FLOAT_IS_ZERO (da)) - f = 1.0f; - else - f = CLAMP (sa / da); - break; - - case DA_OVER_SA: - if (FLOAT_IS_ZERO (sa)) - f = 1.0f; - else - f = CLAMP (da / sa); - break; - - case INV_SA_OVER_DA: - if (FLOAT_IS_ZERO (da)) - f = 1.0f; - else - f = CLAMP ((1.0f - sa) / da); - break; - - case INV_DA_OVER_SA: - if (FLOAT_IS_ZERO (sa)) - f = 1.0f; - else - f = CLAMP ((1.0f - da) / sa); - break; - - case ONE_MINUS_SA_OVER_DA: - if (FLOAT_IS_ZERO (da)) - f = 0.0f; - else - f = CLAMP (1.0f - sa / da); - break; - - case ONE_MINUS_DA_OVER_SA: - if (FLOAT_IS_ZERO (sa)) - f = 0.0f; - else - f = CLAMP (1.0f - da / sa); - break; - - case ONE_MINUS_INV_DA_OVER_SA: - if (FLOAT_IS_ZERO (sa)) - f = 0.0f; - else - f = CLAMP (1.0f - (1.0f - da) / sa); - break; - - case ONE_MINUS_INV_SA_OVER_DA: - if (FLOAT_IS_ZERO (da)) - f = 0.0f; - else - f = CLAMP (1.0f - (1.0f - sa) / da); - break; - } - - return f; -} - -#define MAKE_PD_COMBINERS(name, a, b) \ - static float force_inline \ - pd_combine_ ## name (float sa, float s, float da, float d) \ - { \ - const float fa = get_factor (a, sa, da); \ - const float fb = get_factor (b, sa, da); \ - \ - return MIN (1.0f, s * fa + d * fb); \ - } \ - \ - MAKE_COMBINERS(name, pd_combine_ ## name, pd_combine_ ## name) - -MAKE_PD_COMBINERS (clear, ZERO, ZERO) -MAKE_PD_COMBINERS (src, ONE, ZERO) -MAKE_PD_COMBINERS (dst, ZERO, ONE) -MAKE_PD_COMBINERS (over, ONE, INV_SA) -MAKE_PD_COMBINERS (over_reverse, INV_DA, ONE) -MAKE_PD_COMBINERS (in, DEST_ALPHA, ZERO) -MAKE_PD_COMBINERS (in_reverse, ZERO, SRC_ALPHA) -MAKE_PD_COMBINERS (out, INV_DA, ZERO) -MAKE_PD_COMBINERS (out_reverse, ZERO, INV_SA) -MAKE_PD_COMBINERS (atop, DEST_ALPHA, INV_SA) -MAKE_PD_COMBINERS (atop_reverse, INV_DA, SRC_ALPHA) -MAKE_PD_COMBINERS (xor, INV_DA, INV_SA) -MAKE_PD_COMBINERS (add, ONE, ONE) - -MAKE_PD_COMBINERS (saturate, INV_DA_OVER_SA, ONE) - -MAKE_PD_COMBINERS (disjoint_clear, ZERO, ZERO) -MAKE_PD_COMBINERS (disjoint_src, ONE, ZERO) -MAKE_PD_COMBINERS (disjoint_dst, ZERO, ONE) -MAKE_PD_COMBINERS (disjoint_over, ONE, INV_SA_OVER_DA) -MAKE_PD_COMBINERS (disjoint_over_reverse, INV_DA_OVER_SA, ONE) -MAKE_PD_COMBINERS (disjoint_in, ONE_MINUS_INV_DA_OVER_SA, ZERO) -MAKE_PD_COMBINERS (disjoint_in_reverse, ZERO, ONE_MINUS_INV_SA_OVER_DA) -MAKE_PD_COMBINERS (disjoint_out, INV_DA_OVER_SA, ZERO) -MAKE_PD_COMBINERS (disjoint_out_reverse, ZERO, INV_SA_OVER_DA) -MAKE_PD_COMBINERS (disjoint_atop, ONE_MINUS_INV_DA_OVER_SA, INV_SA_OVER_DA) -MAKE_PD_COMBINERS (disjoint_atop_reverse, INV_DA_OVER_SA, ONE_MINUS_INV_SA_OVER_DA) -MAKE_PD_COMBINERS (disjoint_xor, INV_DA_OVER_SA, INV_SA_OVER_DA) - -MAKE_PD_COMBINERS (conjoint_clear, ZERO, ZERO) -MAKE_PD_COMBINERS (conjoint_src, ONE, ZERO) -MAKE_PD_COMBINERS (conjoint_dst, ZERO, ONE) -MAKE_PD_COMBINERS (conjoint_over, ONE, ONE_MINUS_SA_OVER_DA) -MAKE_PD_COMBINERS (conjoint_over_reverse, ONE_MINUS_DA_OVER_SA, ONE) -MAKE_PD_COMBINERS (conjoint_in, DA_OVER_SA, ZERO) -MAKE_PD_COMBINERS (conjoint_in_reverse, ZERO, SA_OVER_DA) -MAKE_PD_COMBINERS (conjoint_out, ONE_MINUS_DA_OVER_SA, ZERO) -MAKE_PD_COMBINERS (conjoint_out_reverse, ZERO, ONE_MINUS_SA_OVER_DA) -MAKE_PD_COMBINERS (conjoint_atop, DA_OVER_SA, ONE_MINUS_SA_OVER_DA) -MAKE_PD_COMBINERS (conjoint_atop_reverse, ONE_MINUS_DA_OVER_SA, SA_OVER_DA) -MAKE_PD_COMBINERS (conjoint_xor, ONE_MINUS_DA_OVER_SA, ONE_MINUS_SA_OVER_DA) - -/* - * PDF blend modes: - * - * The following blend modes have been taken from the PDF ISO 32000 - * specification, which at this point in time is available from - * - * http://www.adobe.com/devnet/pdf/pdf_reference.html - * - * The specific documents of interest are the PDF spec itself: - * - * http://wwwimages.adobe.com/www.adobe.com/content/dam/Adobe/en/devnet/pdf/pdfs/PDF32000_2008.pdf - * - * chapters 11.3.5 and 11.3.6 and a later supplement for Adobe Acrobat - * 9.1 and Reader 9.1: - * - * http://wwwimages.adobe.com/www.adobe.com/content/dam/Adobe/en/devnet/pdf/pdfs/adobe_supplement_iso32000_1.pdf - * - * that clarifies the specifications for blend modes ColorDodge and - * ColorBurn. - * - * The formula for computing the final pixel color given in 11.3.6 is: - * - * αr × Cr = (1 – αs) × αb × Cb + (1 – αb) × αs × Cs + αb × αs × B(Cb, Cs) - * - * with B() is the blend function. When B(Cb, Cs) = Cs, this formula - * reduces to the regular OVER operator. - * - * Cs and Cb are not premultiplied, so in our implementation we instead - * use: - * - * cr = (1 – αs) × cb + (1 – αb) × cs + αb × αs × B (cb/αb, cs/αs) - * - * where cr, cs, and cb are premultiplied colors, and where the - * - * αb × αs × B(cb/αb, cs/αs) - * - * part is first arithmetically simplified under the assumption that αb - * and αs are not 0, and then updated to produce a meaningful result when - * they are. - * - * For all the blend mode operators, the alpha channel is given by - * - * αr = αs + αb + αb × αs - */ - -#define MAKE_SEPARABLE_PDF_COMBINERS(name) \ - static force_inline float \ - combine_ ## name ## _a (float sa, float s, float da, float d) \ - { \ - return da + sa - da * sa; \ - } \ - \ - static force_inline float \ - combine_ ## name ## _c (float sa, float s, float da, float d) \ - { \ - float f = (1 - sa) * d + (1 - da) * s; \ - \ - return f + blend_ ## name (sa, s, da, d); \ - } \ - \ - MAKE_COMBINERS (name, combine_ ## name ## _a, combine_ ## name ## _c) - -/* - * Multiply - * - * ad * as * B(d / ad, s / as) - * = ad * as * d/ad * s/as - * = d * s - * - */ -static force_inline float -blend_multiply (float sa, float s, float da, float d) -{ - return d * s; -} - -/* - * Screen - * - * ad * as * B(d/ad, s/as) - * = ad * as * (d/ad + s/as - s/as * d/ad) - * = ad * s + as * d - s * d - */ -static force_inline float -blend_screen (float sa, float s, float da, float d) -{ - return d * sa + s * da - s * d; -} - -/* - * Overlay - * - * ad * as * B(d/ad, s/as) - * = ad * as * Hardlight (s, d) - * = if (d / ad < 0.5) - * as * ad * Multiply (s/as, 2 * d/ad) - * else - * as * ad * Screen (s/as, 2 * d / ad - 1) - * = if (d < 0.5 * ad) - * as * ad * s/as * 2 * d /ad - * else - * as * ad * (s/as + 2 * d / ad - 1 - s / as * (2 * d / ad - 1)) - * = if (2 * d < ad) - * 2 * s * d - * else - * ad * s + 2 * as * d - as * ad - ad * s * (2 * d / ad - 1) - * = if (2 * d < ad) - * 2 * s * d - * else - * as * ad - 2 * (ad - d) * (as - s) - */ -static force_inline float -blend_overlay (float sa, float s, float da, float d) -{ - if (2 * d < da) - return 2 * s * d; - else - return sa * da - 2 * (da - d) * (sa - s); -} - -/* - * Darken - * - * ad * as * B(d/ad, s/as) - * = ad * as * MIN(d/ad, s/as) - * = MIN (as * d, ad * s) - */ -static force_inline float -blend_darken (float sa, float s, float da, float d) -{ - s = s * da; - d = d * sa; - - if (s > d) - return d; - else - return s; -} - -/* - * Lighten - * - * ad * as * B(d/ad, s/as) - * = ad * as * MAX(d/ad, s/as) - * = MAX (as * d, ad * s) - */ -static force_inline float -blend_lighten (float sa, float s, float da, float d) -{ - s = s * da; - d = d * sa; - - if (s > d) - return s; - else - return d; -} - -/* - * Color dodge - * - * ad * as * B(d/ad, s/as) - * = if d/ad = 0 - * ad * as * 0 - * else if (d/ad >= (1 - s/as) - * ad * as * 1 - * else - * ad * as * ((d/ad) / (1 - s/as)) - * = if d = 0 - * 0 - * elif as * d >= ad * (as - s) - * ad * as - * else - * as * (as * d / (as - s)) - * - */ -static force_inline float -blend_color_dodge (float sa, float s, float da, float d) -{ - if (FLOAT_IS_ZERO (d)) - return 0.0f; - else if (d * sa >= sa * da - s * da) - return sa * da; - else if (FLOAT_IS_ZERO (sa - s)) - return sa * da; - else - return sa * sa * d / (sa - s); -} - -/* - * Color burn - * - * We modify the first clause "if d = 1" to "if d >= 1" since with - * premultiplied colors d > 1 can actually happen. - * - * ad * as * B(d/ad, s/as) - * = if d/ad >= 1 - * ad * as * 1 - * elif (1 - d/ad) >= s/as - * ad * as * 0 - * else - * ad * as * (1 - ((1 - d/ad) / (s/as))) - * = if d >= ad - * ad * as - * elif as * ad - as * d >= ad * s - * 0 - * else - * ad * as - as * as * (ad - d) / s - */ -static force_inline float -blend_color_burn (float sa, float s, float da, float d) -{ - if (d >= da) - return sa * da; - else if (sa * (da - d) >= s * da) - return 0.0f; - else if (FLOAT_IS_ZERO (s)) - return 0.0f; - else - return sa * (da - sa * (da - d) / s); -} - -/* - * Hard light - * - * ad * as * B(d/ad, s/as) - * = if (s/as <= 0.5) - * ad * as * Multiply (d/ad, 2 * s/as) - * else - * ad * as * Screen (d/ad, 2 * s/as - 1) - * = if 2 * s <= as - * ad * as * d/ad * 2 * s / as - * else - * ad * as * (d/ad + (2 * s/as - 1) + d/ad * (2 * s/as - 1)) - * = if 2 * s <= as - * 2 * s * d - * else - * as * ad - 2 * (ad - d) * (as - s) - */ -static force_inline float -blend_hard_light (float sa, float s, float da, float d) -{ - if (2 * s < sa) - return 2 * s * d; - else - return sa * da - 2 * (da - d) * (sa - s); -} - -/* - * Soft light - * - * ad * as * B(d/ad, s/as) - * = if (s/as <= 0.5) - * ad * as * (d/ad - (1 - 2 * s/as) * d/ad * (1 - d/ad)) - * else if (d/ad <= 0.25) - * ad * as * (d/ad + (2 * s/as - 1) * ((((16 * d/ad - 12) * d/ad + 4) * d/ad) - d/ad)) - * else - * ad * as * (d/ad + (2 * s/as - 1) * sqrt (d/ad)) - * = if (2 * s <= as) - * d * as - d * (ad - d) * (as - 2 * s) / ad; - * else if (4 * d <= ad) - * (2 * s - as) * d * ((16 * d / ad - 12) * d / ad + 3); - * else - * d * as + (sqrt (d * ad) - d) * (2 * s - as); - */ -static force_inline float -blend_soft_light (float sa, float s, float da, float d) -{ - if (2 * s <= sa) - { - if (FLOAT_IS_ZERO (da)) - return d * sa; - else - return d * sa - d * (da - d) * (sa - 2 * s) / da; - } - else - { - if (FLOAT_IS_ZERO (da)) - { - return d * sa; - } - else - { - if (4 * d <= da) - return d * sa + (2 * s - sa) * d * ((16 * d / da - 12) * d / da + 3); - else - return d * sa + (sqrtf (d * da) - d) * (2 * s - sa); - } - } -} - -/* - * Difference - * - * ad * as * B(s/as, d/ad) - * = ad * as * abs (s/as - d/ad) - * = if (s/as <= d/ad) - * ad * as * (d/ad - s/as) - * else - * ad * as * (s/as - d/ad) - * = if (ad * s <= as * d) - * as * d - ad * s - * else - * ad * s - as * d - */ -static force_inline float -blend_difference (float sa, float s, float da, float d) -{ - float dsa = d * sa; - float sda = s * da; - - if (sda < dsa) - return dsa - sda; - else - return sda - dsa; -} - -/* - * Exclusion - * - * ad * as * B(s/as, d/ad) - * = ad * as * (d/ad + s/as - 2 * d/ad * s/as) - * = as * d + ad * s - 2 * s * d - */ -static force_inline float -blend_exclusion (float sa, float s, float da, float d) -{ - return s * da + d * sa - 2 * d * s; -} - -MAKE_SEPARABLE_PDF_COMBINERS (multiply) -MAKE_SEPARABLE_PDF_COMBINERS (screen) -MAKE_SEPARABLE_PDF_COMBINERS (overlay) -MAKE_SEPARABLE_PDF_COMBINERS (darken) -MAKE_SEPARABLE_PDF_COMBINERS (lighten) -MAKE_SEPARABLE_PDF_COMBINERS (color_dodge) -MAKE_SEPARABLE_PDF_COMBINERS (color_burn) -MAKE_SEPARABLE_PDF_COMBINERS (hard_light) -MAKE_SEPARABLE_PDF_COMBINERS (soft_light) -MAKE_SEPARABLE_PDF_COMBINERS (difference) -MAKE_SEPARABLE_PDF_COMBINERS (exclusion) - -/* - * PDF nonseperable blend modes are implemented using the following functions - * to operate in Hsl space, with Cmax, Cmid, Cmin referring to the max, mid - * and min value of the red, green and blue components. - * - * LUM (C) = 0.3 × Cred + 0.59 × Cgreen + 0.11 × Cblue - * - * clip_color (C): - * l = LUM (C) - * min = Cmin - * max = Cmax - * if n < 0.0 - * C = l + (((C – l) × l) ⁄ (l – min)) - * if x > 1.0 - * C = l + (((C – l) × (1 – l) ) ⁄ (max – l)) - * return C - * - * set_lum (C, l): - * d = l – LUM (C) - * C += d - * return clip_color (C) - * - * SAT (C) = CH_MAX (C) - CH_MIN (C) - * - * set_sat (C, s): - * if Cmax > Cmin - * Cmid = ( ( ( Cmid – Cmin ) × s ) ⁄ ( Cmax – Cmin ) ) - * Cmax = s - * else - * Cmid = Cmax = 0.0 - * Cmin = 0.0 - * return C - */ - -/* For premultiplied colors, we need to know what happens when C is - * multiplied by a real number. LUM and SAT are linear: - * - * LUM (r × C) = r × LUM (C) SAT (r * C) = r * SAT (C) - * - * If we extend clip_color with an extra argument a and change - * - * if x >= 1.0 - * - * into - * - * if x >= a - * - * then clip_color is also linear: - * - * r * clip_color (C, a) = clip_color (r * C, r * a); - * - * for positive r. - * - * Similarly, we can extend set_lum with an extra argument that is just passed - * on to clip_color: - * - * r * set_lum (C, l, a) - * - * = r × clip_color (C + l - LUM (C), a) - * - * = clip_color (r * C + r × l - r * LUM (C), r * a) - * - * = set_lum (r * C, r * l, r * a) - * - * Finally, set_sat: - * - * r * set_sat (C, s) = set_sat (x * C, r * s) - * - * The above holds for all non-zero x, because the x'es in the fraction for - * C_mid cancel out. Specifically, it holds for x = r: - * - * r * set_sat (C, s) = set_sat (r * C, r * s) - * - */ -typedef struct -{ - float r; - float g; - float b; -} rgb_t; - -static force_inline float -minf (float a, float b) -{ - return a < b? a : b; -} - -static force_inline float -maxf (float a, float b) -{ - return a > b? a : b; -} - -static force_inline float -channel_min (const rgb_t *c) -{ - return minf (minf (c->r, c->g), c->b); -} - -static force_inline float -channel_max (const rgb_t *c) -{ - return maxf (maxf (c->r, c->g), c->b); -} - -static force_inline float -get_lum (const rgb_t *c) -{ - return c->r * 0.3f + c->g * 0.59f + c->b * 0.11f; -} - -static force_inline float -get_sat (const rgb_t *c) -{ - return channel_max (c) - channel_min (c); -} - -static void -clip_color (rgb_t *color, float a) -{ - float l = get_lum (color); - float n = channel_min (color); - float x = channel_max (color); - float t; - - if (n < 0.0f) - { - t = l - n; - if (FLOAT_IS_ZERO (t)) - { - color->r = 0.0f; - color->g = 0.0f; - color->b = 0.0f; - } - else - { - color->r = l + (((color->r - l) * l) / t); - color->g = l + (((color->g - l) * l) / t); - color->b = l + (((color->b - l) * l) / t); - } - } - if (x > a) - { - t = x - l; - if (FLOAT_IS_ZERO (t)) - { - color->r = a; - color->g = a; - color->b = a; - } - else - { - color->r = l + (((color->r - l) * (a - l) / t)); - color->g = l + (((color->g - l) * (a - l) / t)); - color->b = l + (((color->b - l) * (a - l) / t)); - } - } -} - -static void -set_lum (rgb_t *color, float sa, float l) -{ - float d = l - get_lum (color); - - color->r = color->r + d; - color->g = color->g + d; - color->b = color->b + d; - - clip_color (color, sa); -} - -static void -set_sat (rgb_t *src, float sat) -{ - float *max, *mid, *min; - float t; - - if (src->r > src->g) - { - if (src->r > src->b) - { - max = &(src->r); - - if (src->g > src->b) - { - mid = &(src->g); - min = &(src->b); - } - else - { - mid = &(src->b); - min = &(src->g); - } - } - else - { - max = &(src->b); - mid = &(src->r); - min = &(src->g); - } - } - else - { - if (src->r > src->b) - { - max = &(src->g); - mid = &(src->r); - min = &(src->b); - } - else - { - min = &(src->r); - - if (src->g > src->b) - { - max = &(src->g); - mid = &(src->b); - } - else - { - max = &(src->b); - mid = &(src->g); - } - } - } - - t = *max - *min; - - if (FLOAT_IS_ZERO (t)) - { - *mid = *max = 0.0f; - } - else - { - *mid = ((*mid - *min) * sat) / t; - *max = sat; - } - - *min = 0.0f; -} - -/* Hue: - * - * as * ad * B(s/as, d/as) - * = as * ad * set_lum (set_sat (s/as, SAT (d/ad)), LUM (d/ad), 1) - * = set_lum (set_sat (ad * s, as * SAT (d)), as * LUM (d), as * ad) - * - */ -static force_inline void -blend_hsl_hue (rgb_t *res, - const rgb_t *dest, float da, - const rgb_t *src, float sa) -{ - res->r = src->r * da; - res->g = src->g * da; - res->b = src->b * da; - - set_sat (res, get_sat (dest) * sa); - set_lum (res, sa * da, get_lum (dest) * sa); -} - -/* - * Saturation - * - * as * ad * B(s/as, d/ad) - * = as * ad * set_lum (set_sat (d/ad, SAT (s/as)), LUM (d/ad), 1) - * = set_lum (as * ad * set_sat (d/ad, SAT (s/as)), - * as * LUM (d), as * ad) - * = set_lum (set_sat (as * d, ad * SAT (s), as * LUM (d), as * ad)) - */ -static force_inline void -blend_hsl_saturation (rgb_t *res, - const rgb_t *dest, float da, - const rgb_t *src, float sa) -{ - res->r = dest->r * sa; - res->g = dest->g * sa; - res->b = dest->b * sa; - - set_sat (res, get_sat (src) * da); - set_lum (res, sa * da, get_lum (dest) * sa); -} - -/* - * Color - * - * as * ad * B(s/as, d/as) - * = as * ad * set_lum (s/as, LUM (d/ad), 1) - * = set_lum (s * ad, as * LUM (d), as * ad) - */ -static force_inline void -blend_hsl_color (rgb_t *res, - const rgb_t *dest, float da, - const rgb_t *src, float sa) -{ - res->r = src->r * da; - res->g = src->g * da; - res->b = src->b * da; - - set_lum (res, sa * da, get_lum (dest) * sa); -} - -/* - * Luminosity - * - * as * ad * B(s/as, d/ad) - * = as * ad * set_lum (d/ad, LUM (s/as), 1) - * = set_lum (as * d, ad * LUM (s), as * ad) - */ -static force_inline void -blend_hsl_luminosity (rgb_t *res, - const rgb_t *dest, float da, - const rgb_t *src, float sa) -{ - res->r = dest->r * sa; - res->g = dest->g * sa; - res->b = dest->b * sa; - - set_lum (res, sa * da, get_lum (src) * da); -} - -#define MAKE_NON_SEPARABLE_PDF_COMBINERS(name) \ - static void \ - combine_ ## name ## _u_float (pixman_implementation_t *imp, \ - pixman_op_t op, \ - float *dest, \ - const float *src, \ - const float *mask, \ - int n_pixels) \ - { \ - int i; \ - \ - for (i = 0; i < 4 * n_pixels; i += 4) \ - { \ - float sa, da; \ - rgb_t sc, dc, rc; \ - \ - sa = src[i + 0]; \ - sc.r = src[i + 1]; \ - sc.g = src[i + 2]; \ - sc.b = src[i + 3]; \ - \ - da = dest[i + 0]; \ - dc.r = dest[i + 1]; \ - dc.g = dest[i + 2]; \ - dc.b = dest[i + 3]; \ - \ - if (mask) \ - { \ - float ma = mask[i + 0]; \ - \ - /* Component alpha is not supported for HSL modes */ \ - sa *= ma; \ - sc.r *= ma; \ - sc.g *= ma; \ - sc.g *= ma; \ - } \ - \ - blend_ ## name (&rc, &dc, da, &sc, sa); \ - \ - dest[i + 0] = sa + da - sa * da; \ - dest[i + 1] = (1 - sa) * dc.r + (1 - da) * sc.r + rc.r; \ - dest[i + 2] = (1 - sa) * dc.g + (1 - da) * sc.g + rc.g; \ - dest[i + 3] = (1 - sa) * dc.b + (1 - da) * sc.b + rc.b; \ - } \ - } - -MAKE_NON_SEPARABLE_PDF_COMBINERS(hsl_hue) -MAKE_NON_SEPARABLE_PDF_COMBINERS(hsl_saturation) -MAKE_NON_SEPARABLE_PDF_COMBINERS(hsl_color) -MAKE_NON_SEPARABLE_PDF_COMBINERS(hsl_luminosity) - -void -_pixman_setup_combiner_functions_float (pixman_implementation_t *imp) -{ - /* Unified alpha */ - imp->combine_float[PIXMAN_OP_CLEAR] = combine_clear_u_float; - imp->combine_float[PIXMAN_OP_SRC] = combine_src_u_float; - imp->combine_float[PIXMAN_OP_DST] = combine_dst_u_float; - imp->combine_float[PIXMAN_OP_OVER] = combine_over_u_float; - imp->combine_float[PIXMAN_OP_OVER_REVERSE] = combine_over_reverse_u_float; - imp->combine_float[PIXMAN_OP_IN] = combine_in_u_float; - imp->combine_float[PIXMAN_OP_IN_REVERSE] = combine_in_reverse_u_float; - imp->combine_float[PIXMAN_OP_OUT] = combine_out_u_float; - imp->combine_float[PIXMAN_OP_OUT_REVERSE] = combine_out_reverse_u_float; - imp->combine_float[PIXMAN_OP_ATOP] = combine_atop_u_float; - imp->combine_float[PIXMAN_OP_ATOP_REVERSE] = combine_atop_reverse_u_float; - imp->combine_float[PIXMAN_OP_XOR] = combine_xor_u_float; - imp->combine_float[PIXMAN_OP_ADD] = combine_add_u_float; - imp->combine_float[PIXMAN_OP_SATURATE] = combine_saturate_u_float; - - /* Disjoint, unified */ - imp->combine_float[PIXMAN_OP_DISJOINT_CLEAR] = combine_disjoint_clear_u_float; - imp->combine_float[PIXMAN_OP_DISJOINT_SRC] = combine_disjoint_src_u_float; - imp->combine_float[PIXMAN_OP_DISJOINT_DST] = combine_disjoint_dst_u_float; - imp->combine_float[PIXMAN_OP_DISJOINT_OVER] = combine_disjoint_over_u_float; - imp->combine_float[PIXMAN_OP_DISJOINT_OVER_REVERSE] = combine_disjoint_over_reverse_u_float; - imp->combine_float[PIXMAN_OP_DISJOINT_IN] = combine_disjoint_in_u_float; - imp->combine_float[PIXMAN_OP_DISJOINT_IN_REVERSE] = combine_disjoint_in_reverse_u_float; - imp->combine_float[PIXMAN_OP_DISJOINT_OUT] = combine_disjoint_out_u_float; - imp->combine_float[PIXMAN_OP_DISJOINT_OUT_REVERSE] = combine_disjoint_out_reverse_u_float; - imp->combine_float[PIXMAN_OP_DISJOINT_ATOP] = combine_disjoint_atop_u_float; - imp->combine_float[PIXMAN_OP_DISJOINT_ATOP_REVERSE] = combine_disjoint_atop_reverse_u_float; - imp->combine_float[PIXMAN_OP_DISJOINT_XOR] = combine_disjoint_xor_u_float; - - /* Conjoint, unified */ - imp->combine_float[PIXMAN_OP_CONJOINT_CLEAR] = combine_conjoint_clear_u_float; - imp->combine_float[PIXMAN_OP_CONJOINT_SRC] = combine_conjoint_src_u_float; - imp->combine_float[PIXMAN_OP_CONJOINT_DST] = combine_conjoint_dst_u_float; - imp->combine_float[PIXMAN_OP_CONJOINT_OVER] = combine_conjoint_over_u_float; - imp->combine_float[PIXMAN_OP_CONJOINT_OVER_REVERSE] = combine_conjoint_over_reverse_u_float; - imp->combine_float[PIXMAN_OP_CONJOINT_IN] = combine_conjoint_in_u_float; - imp->combine_float[PIXMAN_OP_CONJOINT_IN_REVERSE] = combine_conjoint_in_reverse_u_float; - imp->combine_float[PIXMAN_OP_CONJOINT_OUT] = combine_conjoint_out_u_float; - imp->combine_float[PIXMAN_OP_CONJOINT_OUT_REVERSE] = combine_conjoint_out_reverse_u_float; - imp->combine_float[PIXMAN_OP_CONJOINT_ATOP] = combine_conjoint_atop_u_float; - imp->combine_float[PIXMAN_OP_CONJOINT_ATOP_REVERSE] = combine_conjoint_atop_reverse_u_float; - imp->combine_float[PIXMAN_OP_CONJOINT_XOR] = combine_conjoint_xor_u_float; - - /* PDF operators, unified */ - imp->combine_float[PIXMAN_OP_MULTIPLY] = combine_multiply_u_float; - imp->combine_float[PIXMAN_OP_SCREEN] = combine_screen_u_float; - imp->combine_float[PIXMAN_OP_OVERLAY] = combine_overlay_u_float; - imp->combine_float[PIXMAN_OP_DARKEN] = combine_darken_u_float; - imp->combine_float[PIXMAN_OP_LIGHTEN] = combine_lighten_u_float; - imp->combine_float[PIXMAN_OP_COLOR_DODGE] = combine_color_dodge_u_float; - imp->combine_float[PIXMAN_OP_COLOR_BURN] = combine_color_burn_u_float; - imp->combine_float[PIXMAN_OP_HARD_LIGHT] = combine_hard_light_u_float; - imp->combine_float[PIXMAN_OP_SOFT_LIGHT] = combine_soft_light_u_float; - imp->combine_float[PIXMAN_OP_DIFFERENCE] = combine_difference_u_float; - imp->combine_float[PIXMAN_OP_EXCLUSION] = combine_exclusion_u_float; - - imp->combine_float[PIXMAN_OP_HSL_HUE] = combine_hsl_hue_u_float; - imp->combine_float[PIXMAN_OP_HSL_SATURATION] = combine_hsl_saturation_u_float; - imp->combine_float[PIXMAN_OP_HSL_COLOR] = combine_hsl_color_u_float; - imp->combine_float[PIXMAN_OP_HSL_LUMINOSITY] = combine_hsl_luminosity_u_float; - - /* Component alpha combiners */ - imp->combine_float_ca[PIXMAN_OP_CLEAR] = combine_clear_ca_float; - imp->combine_float_ca[PIXMAN_OP_SRC] = combine_src_ca_float; - imp->combine_float_ca[PIXMAN_OP_DST] = combine_dst_ca_float; - imp->combine_float_ca[PIXMAN_OP_OVER] = combine_over_ca_float; - imp->combine_float_ca[PIXMAN_OP_OVER_REVERSE] = combine_over_reverse_ca_float; - imp->combine_float_ca[PIXMAN_OP_IN] = combine_in_ca_float; - imp->combine_float_ca[PIXMAN_OP_IN_REVERSE] = combine_in_reverse_ca_float; - imp->combine_float_ca[PIXMAN_OP_OUT] = combine_out_ca_float; - imp->combine_float_ca[PIXMAN_OP_OUT_REVERSE] = combine_out_reverse_ca_float; - imp->combine_float_ca[PIXMAN_OP_ATOP] = combine_atop_ca_float; - imp->combine_float_ca[PIXMAN_OP_ATOP_REVERSE] = combine_atop_reverse_ca_float; - imp->combine_float_ca[PIXMAN_OP_XOR] = combine_xor_ca_float; - imp->combine_float_ca[PIXMAN_OP_ADD] = combine_add_ca_float; - imp->combine_float_ca[PIXMAN_OP_SATURATE] = combine_saturate_ca_float; - - /* Disjoint CA */ - imp->combine_float_ca[PIXMAN_OP_DISJOINT_CLEAR] = combine_disjoint_clear_ca_float; - imp->combine_float_ca[PIXMAN_OP_DISJOINT_SRC] = combine_disjoint_src_ca_float; - imp->combine_float_ca[PIXMAN_OP_DISJOINT_DST] = combine_disjoint_dst_ca_float; - imp->combine_float_ca[PIXMAN_OP_DISJOINT_OVER] = combine_disjoint_over_ca_float; - imp->combine_float_ca[PIXMAN_OP_DISJOINT_OVER_REVERSE] = combine_disjoint_over_reverse_ca_float; - imp->combine_float_ca[PIXMAN_OP_DISJOINT_IN] = combine_disjoint_in_ca_float; - imp->combine_float_ca[PIXMAN_OP_DISJOINT_IN_REVERSE] = combine_disjoint_in_reverse_ca_float; - imp->combine_float_ca[PIXMAN_OP_DISJOINT_OUT] = combine_disjoint_out_ca_float; - imp->combine_float_ca[PIXMAN_OP_DISJOINT_OUT_REVERSE] = combine_disjoint_out_reverse_ca_float; - imp->combine_float_ca[PIXMAN_OP_DISJOINT_ATOP] = combine_disjoint_atop_ca_float; - imp->combine_float_ca[PIXMAN_OP_DISJOINT_ATOP_REVERSE] = combine_disjoint_atop_reverse_ca_float; - imp->combine_float_ca[PIXMAN_OP_DISJOINT_XOR] = combine_disjoint_xor_ca_float; - - /* Conjoint CA */ - imp->combine_float_ca[PIXMAN_OP_CONJOINT_CLEAR] = combine_conjoint_clear_ca_float; - imp->combine_float_ca[PIXMAN_OP_CONJOINT_SRC] = combine_conjoint_src_ca_float; - imp->combine_float_ca[PIXMAN_OP_CONJOINT_DST] = combine_conjoint_dst_ca_float; - imp->combine_float_ca[PIXMAN_OP_CONJOINT_OVER] = combine_conjoint_over_ca_float; - imp->combine_float_ca[PIXMAN_OP_CONJOINT_OVER_REVERSE] = combine_conjoint_over_reverse_ca_float; - imp->combine_float_ca[PIXMAN_OP_CONJOINT_IN] = combine_conjoint_in_ca_float; - imp->combine_float_ca[PIXMAN_OP_CONJOINT_IN_REVERSE] = combine_conjoint_in_reverse_ca_float; - imp->combine_float_ca[PIXMAN_OP_CONJOINT_OUT] = combine_conjoint_out_ca_float; - imp->combine_float_ca[PIXMAN_OP_CONJOINT_OUT_REVERSE] = combine_conjoint_out_reverse_ca_float; - imp->combine_float_ca[PIXMAN_OP_CONJOINT_ATOP] = combine_conjoint_atop_ca_float; - imp->combine_float_ca[PIXMAN_OP_CONJOINT_ATOP_REVERSE] = combine_conjoint_atop_reverse_ca_float; - imp->combine_float_ca[PIXMAN_OP_CONJOINT_XOR] = combine_conjoint_xor_ca_float; - - /* PDF operators CA */ - imp->combine_float_ca[PIXMAN_OP_MULTIPLY] = combine_multiply_ca_float; - imp->combine_float_ca[PIXMAN_OP_SCREEN] = combine_screen_ca_float; - imp->combine_float_ca[PIXMAN_OP_OVERLAY] = combine_overlay_ca_float; - imp->combine_float_ca[PIXMAN_OP_DARKEN] = combine_darken_ca_float; - imp->combine_float_ca[PIXMAN_OP_LIGHTEN] = combine_lighten_ca_float; - imp->combine_float_ca[PIXMAN_OP_COLOR_DODGE] = combine_color_dodge_ca_float; - imp->combine_float_ca[PIXMAN_OP_COLOR_BURN] = combine_color_burn_ca_float; - imp->combine_float_ca[PIXMAN_OP_HARD_LIGHT] = combine_hard_light_ca_float; - imp->combine_float_ca[PIXMAN_OP_SOFT_LIGHT] = combine_soft_light_ca_float; - imp->combine_float_ca[PIXMAN_OP_DIFFERENCE] = combine_difference_ca_float; - imp->combine_float_ca[PIXMAN_OP_EXCLUSION] = combine_exclusion_ca_float; - - /* It is not clear that these make sense, so make them noops for now */ - imp->combine_float_ca[PIXMAN_OP_HSL_HUE] = combine_dst_u_float; - imp->combine_float_ca[PIXMAN_OP_HSL_SATURATION] = combine_dst_u_float; - imp->combine_float_ca[PIXMAN_OP_HSL_COLOR] = combine_dst_u_float; - imp->combine_float_ca[PIXMAN_OP_HSL_LUMINOSITY] = combine_dst_u_float; -} |