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/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
/* cairo - a vector graphics library with display and print output
*
* Copyright © 2003 University of Southern California
* Copyright © 2009,2010,2011 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it either under the terms of the GNU Lesser General Public
* License version 2.1 as published by the Free Software Foundation
* (the "LGPL") or, at your option, under the terms of the Mozilla
* Public License Version 1.1 (the "MPL"). If you do not alter this
* notice, a recipient may use your version of this file under either
* the MPL or the LGPL.
*
* You should have received a copy of the LGPL along with this library
* in the file COPYING-LGPL-2.1; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
* You should have received a copy of the MPL along with this library
* in the file COPYING-MPL-1.1
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
* OF ANY KIND, either express or implied. See the LGPL or the MPL for
* the specific language governing rights and limitations.
*
* The Original Code is the cairo graphics library.
*
* The Initial Developer of the Original Code is University of Southern
* California.
*
* Contributor(s):
* Carl D. Worth <cworth@cworth.org>
* Chris Wilson <chris@chris-wilson.co.uk>
*/
/* The primarily reason for keeping a traps-compositor around is
* for validating cairo-xlib (which currently also uses traps).
*/
#include "cairoint.h"
#include "cairo-image-surface-private.h"
#include "cairo-compositor-private.h"
#include "cairo-spans-compositor-private.h"
#include "cairo-region-private.h"
#include "cairo-traps-private.h"
#include "cairo-tristrip-private.h"
#include "cairo-pixman-private.h"
static pixman_image_t *
to_pixman_image (cairo_surface_t *s)
{
return ((cairo_image_surface_t *)s)->pixman_image;
}
static cairo_int_status_t
acquire (void *abstract_dst)
{
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
release (void *abstract_dst)
{
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
set_clip_region (void *_surface,
cairo_region_t *region)
{
cairo_image_surface_t *surface = _surface;
pixman_region32_t *rgn = region ? &region->rgn : NULL;
if (! pixman_image_set_clip_region32 (surface->pixman_image, rgn))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
draw_image_boxes (void *_dst,
cairo_image_surface_t *image,
cairo_boxes_t *boxes,
int dx, int dy)
{
cairo_image_surface_t *dst = _dst;
struct _cairo_boxes_chunk *chunk;
int i;
TRACE ((stderr, "%s x %d\n", __FUNCTION__, boxes->num_boxes));
for (chunk = &boxes->chunks; chunk; chunk = chunk->next) {
for (i = 0; i < chunk->count; i++) {
cairo_box_t *b = &chunk->base[i];
int x = _cairo_fixed_integer_part (b->p1.x);
int y = _cairo_fixed_integer_part (b->p1.y);
int w = _cairo_fixed_integer_part (b->p2.x) - x;
int h = _cairo_fixed_integer_part (b->p2.y) - y;
if (dst->pixman_format != image->pixman_format ||
! pixman_blt ((uint32_t *)image->data, (uint32_t *)dst->data,
image->stride / sizeof (uint32_t),
dst->stride / sizeof (uint32_t),
PIXMAN_FORMAT_BPP (image->pixman_format),
PIXMAN_FORMAT_BPP (dst->pixman_format),
x + dx, y + dy,
x, y,
w, h))
{
pixman_image_composite32 (PIXMAN_OP_SRC,
image->pixman_image, NULL, dst->pixman_image,
x + dx, y + dy,
0, 0,
x, y,
w, h);
}
}
}
return CAIRO_STATUS_SUCCESS;
}
static inline uint32_t
color_to_uint32 (const cairo_color_t *color)
{
return
(color->alpha_short >> 8 << 24) |
(color->red_short >> 8 << 16) |
(color->green_short & 0xff00) |
(color->blue_short >> 8);
}
static inline cairo_bool_t
color_to_pixel (const cairo_color_t *color,
pixman_format_code_t format,
uint32_t *pixel)
{
uint32_t c;
if (!(format == PIXMAN_a8r8g8b8 ||
format == PIXMAN_x8r8g8b8 ||
format == PIXMAN_a8b8g8r8 ||
format == PIXMAN_x8b8g8r8 ||
format == PIXMAN_b8g8r8a8 ||
format == PIXMAN_b8g8r8x8 ||
format == PIXMAN_r5g6b5 ||
format == PIXMAN_b5g6r5 ||
format == PIXMAN_a8))
{
return FALSE;
}
c = color_to_uint32 (color);
if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_ABGR) {
c = ((c & 0xff000000) >> 0) |
((c & 0x00ff0000) >> 16) |
((c & 0x0000ff00) >> 0) |
((c & 0x000000ff) << 16);
}
if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_BGRA) {
c = ((c & 0xff000000) >> 24) |
((c & 0x00ff0000) >> 8) |
((c & 0x0000ff00) << 8) |
((c & 0x000000ff) << 24);
}
if (format == PIXMAN_a8) {
c = c >> 24;
} else if (format == PIXMAN_r5g6b5 || format == PIXMAN_b5g6r5) {
c = ((((c) >> 3) & 0x001f) |
(((c) >> 5) & 0x07e0) |
(((c) >> 8) & 0xf800));
}
*pixel = c;
return TRUE;
}
static pixman_op_t
_pixman_operator (cairo_operator_t op)
{
switch ((int) op) {
case CAIRO_OPERATOR_CLEAR:
return PIXMAN_OP_CLEAR;
case CAIRO_OPERATOR_SOURCE:
return PIXMAN_OP_SRC;
case CAIRO_OPERATOR_OVER:
return PIXMAN_OP_OVER;
case CAIRO_OPERATOR_IN:
return PIXMAN_OP_IN;
case CAIRO_OPERATOR_OUT:
return PIXMAN_OP_OUT;
case CAIRO_OPERATOR_ATOP:
return PIXMAN_OP_ATOP;
case CAIRO_OPERATOR_DEST:
return PIXMAN_OP_DST;
case CAIRO_OPERATOR_DEST_OVER:
return PIXMAN_OP_OVER_REVERSE;
case CAIRO_OPERATOR_DEST_IN:
return PIXMAN_OP_IN_REVERSE;
case CAIRO_OPERATOR_DEST_OUT:
return PIXMAN_OP_OUT_REVERSE;
case CAIRO_OPERATOR_DEST_ATOP:
return PIXMAN_OP_ATOP_REVERSE;
case CAIRO_OPERATOR_XOR:
return PIXMAN_OP_XOR;
case CAIRO_OPERATOR_ADD:
return PIXMAN_OP_ADD;
case CAIRO_OPERATOR_SATURATE:
return PIXMAN_OP_SATURATE;
case CAIRO_OPERATOR_MULTIPLY:
return PIXMAN_OP_MULTIPLY;
case CAIRO_OPERATOR_SCREEN:
return PIXMAN_OP_SCREEN;
case CAIRO_OPERATOR_OVERLAY:
return PIXMAN_OP_OVERLAY;
case CAIRO_OPERATOR_DARKEN:
return PIXMAN_OP_DARKEN;
case CAIRO_OPERATOR_LIGHTEN:
return PIXMAN_OP_LIGHTEN;
case CAIRO_OPERATOR_COLOR_DODGE:
return PIXMAN_OP_COLOR_DODGE;
case CAIRO_OPERATOR_COLOR_BURN:
return PIXMAN_OP_COLOR_BURN;
case CAIRO_OPERATOR_HARD_LIGHT:
return PIXMAN_OP_HARD_LIGHT;
case CAIRO_OPERATOR_SOFT_LIGHT:
return PIXMAN_OP_SOFT_LIGHT;
case CAIRO_OPERATOR_DIFFERENCE:
return PIXMAN_OP_DIFFERENCE;
case CAIRO_OPERATOR_EXCLUSION:
return PIXMAN_OP_EXCLUSION;
case CAIRO_OPERATOR_HSL_HUE:
return PIXMAN_OP_HSL_HUE;
case CAIRO_OPERATOR_HSL_SATURATION:
return PIXMAN_OP_HSL_SATURATION;
case CAIRO_OPERATOR_HSL_COLOR:
return PIXMAN_OP_HSL_COLOR;
case CAIRO_OPERATOR_HSL_LUMINOSITY:
return PIXMAN_OP_HSL_LUMINOSITY;
default:
ASSERT_NOT_REACHED;
return PIXMAN_OP_OVER;
}
}
static cairo_bool_t
__fill_reduces_to_source (cairo_operator_t op,
const cairo_color_t *color,
const cairo_image_surface_t *dst)
{
if (op == CAIRO_OPERATOR_SOURCE || op == CAIRO_OPERATOR_CLEAR)
return TRUE;
if (op == CAIRO_OPERATOR_OVER && CAIRO_COLOR_IS_OPAQUE (color))
return TRUE;
if (dst->base.is_clear)
return op == CAIRO_OPERATOR_OVER || op == CAIRO_OPERATOR_ADD;
return FALSE;
}
static cairo_bool_t
fill_reduces_to_source (cairo_operator_t op,
const cairo_color_t *color,
const cairo_image_surface_t *dst,
uint32_t *pixel)
{
if (__fill_reduces_to_source (op, color, dst)) {
return color_to_pixel (color, dst->pixman_format, pixel);
}
return FALSE;
}
static cairo_int_status_t
fill_rectangles (void *_dst,
cairo_operator_t op,
const cairo_color_t *color,
cairo_rectangle_int_t *rects,
int num_rects)
{
cairo_image_surface_t *dst = _dst;
uint32_t pixel;
int i;
TRACE ((stderr, "%s\n", __FUNCTION__));
if (fill_reduces_to_source (op, color, dst, &pixel)) {
for (i = 0; i < num_rects; i++) {
pixman_fill ((uint32_t *) dst->data, dst->stride / sizeof (uint32_t),
PIXMAN_FORMAT_BPP (dst->pixman_format),
rects[i].x, rects[i].y,
rects[i].width, rects[i].height,
pixel);
}
} else {
pixman_image_t *src = _pixman_image_for_color (color);
if (unlikely (src == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
op = _pixman_operator (op);
for (i = 0; i < num_rects; i++) {
pixman_image_composite32 (op,
src, NULL, dst->pixman_image,
0, 0,
0, 0,
rects[i].x, rects[i].y,
rects[i].width, rects[i].height);
}
pixman_image_unref (src);
}
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
fill_boxes (void *_dst,
cairo_operator_t op,
const cairo_color_t *color,
cairo_boxes_t *boxes)
{
cairo_image_surface_t *dst = _dst;
struct _cairo_boxes_chunk *chunk;
uint32_t pixel;
int i;
TRACE ((stderr, "%s x %d\n", __FUNCTION__, boxes->num_boxes));
if (fill_reduces_to_source (op, color, dst, &pixel)) {
for (chunk = &boxes->chunks; chunk; chunk = chunk->next) {
for (i = 0; i < chunk->count; i++) {
int x = _cairo_fixed_integer_part (chunk->base[i].p1.x);
int y = _cairo_fixed_integer_part (chunk->base[i].p1.y);
int w = _cairo_fixed_integer_part (chunk->base[i].p2.x) - x;
int h = _cairo_fixed_integer_part (chunk->base[i].p2.y) - y;
pixman_fill ((uint32_t *) dst->data,
dst->stride / sizeof (uint32_t),
PIXMAN_FORMAT_BPP (dst->pixman_format),
x, y, w, h, pixel);
}
}
}
else
{
pixman_image_t *src = _pixman_image_for_color (color);
if (unlikely (src == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
op = _pixman_operator (op);
for (chunk = &boxes->chunks; chunk; chunk = chunk->next) {
for (i = 0; i < chunk->count; i++) {
int x1 = _cairo_fixed_integer_part (chunk->base[i].p1.x);
int y1 = _cairo_fixed_integer_part (chunk->base[i].p1.y);
int x2 = _cairo_fixed_integer_part (chunk->base[i].p2.x);
int y2 = _cairo_fixed_integer_part (chunk->base[i].p2.y);
pixman_image_composite32 (op,
src, NULL, dst->pixman_image,
0, 0,
0, 0,
x1, y1,
x2-x1, y2-y1);
}
}
pixman_image_unref (src);
}
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
composite (void *_dst,
cairo_operator_t op,
cairo_surface_t *abstract_src,
cairo_surface_t *abstract_mask,
int src_x,
int src_y,
int mask_x,
int mask_y,
int dst_x,
int dst_y,
unsigned int width,
unsigned int height)
{
cairo_image_source_t *src = (cairo_image_source_t *)abstract_src;
cairo_image_source_t *mask = (cairo_image_source_t *)abstract_mask;
TRACE ((stderr, "%s\n", __FUNCTION__));
if (mask) {
pixman_image_composite32 (_pixman_operator (op),
src->pixman_image, mask->pixman_image, to_pixman_image (_dst),
src_x, src_y,
mask_x, mask_y,
dst_x, dst_y,
width, height);
} else {
pixman_image_composite32 (_pixman_operator (op),
src->pixman_image, NULL, to_pixman_image (_dst),
src_x, src_y,
0, 0,
dst_x, dst_y,
width, height);
}
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
lerp (void *_dst,
cairo_surface_t *abstract_src,
cairo_surface_t *abstract_mask,
int src_x,
int src_y,
int mask_x,
int mask_y,
int dst_x,
int dst_y,
unsigned int width,
unsigned int height)
{
cairo_image_surface_t *dst = _dst;
cairo_image_source_t *src = (cairo_image_source_t *)abstract_src;
cairo_image_source_t *mask = (cairo_image_source_t *)abstract_mask;
TRACE ((stderr, "%s\n", __FUNCTION__));
#if PIXMAN_HAS_OP_LERP
pixman_image_composite32 (PIXMAN_OP_LERP_SRC,
src->pixman_image, mask->pixman_image, dst->pixman_image,
src_x, src_y,
mask_x, mask_y,
dst_x, dst_y,
width, height);
#else
/* Punch the clip out of the destination */
TRACE ((stderr, "%s - OUT_REVERSE (mask=%d/%p, dst=%d/%p)\n",
__FUNCTION__,
mask->base.unique_id, mask->pixman_image,
dst->base.unique_id, dst->pixman_image));
pixman_image_composite32 (PIXMAN_OP_OUT_REVERSE,
mask->pixman_image, NULL, dst->pixman_image,
mask_x, mask_y,
0, 0,
dst_x, dst_y,
width, height);
/* Now add the two results together */
TRACE ((stderr, "%s - ADD (src=%d/%p, mask=%d/%p, dst=%d/%p)\n",
__FUNCTION__,
src->base.unique_id, src->pixman_image,
mask->base.unique_id, mask->pixman_image,
dst->base.unique_id, dst->pixman_image));
pixman_image_composite32 (PIXMAN_OP_ADD,
src->pixman_image, mask->pixman_image, dst->pixman_image,
src_x, src_y,
mask_x, mask_y,
dst_x, dst_y,
width, height);
#endif
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
composite_boxes (void *_dst,
cairo_operator_t op,
cairo_surface_t *abstract_src,
cairo_surface_t *abstract_mask,
int src_x,
int src_y,
int mask_x,
int mask_y,
int dst_x,
int dst_y,
cairo_boxes_t *boxes,
const cairo_rectangle_int_t *extents)
{
pixman_image_t *dst = to_pixman_image (_dst);
pixman_image_t *src = ((cairo_image_source_t *)abstract_src)->pixman_image;
pixman_image_t *mask = abstract_mask ? ((cairo_image_source_t *)abstract_mask)->pixman_image : NULL;
pixman_image_t *free_src = NULL;
struct _cairo_boxes_chunk *chunk;
int i;
/* XXX consider using a region? saves multiple prepare-composite */
TRACE ((stderr, "%s x %d\n", __FUNCTION__, boxes->num_boxes));
if (((cairo_surface_t *)_dst)->is_clear &&
(op == CAIRO_OPERATOR_SOURCE ||
op == CAIRO_OPERATOR_OVER ||
op == CAIRO_OPERATOR_ADD)) {
op = PIXMAN_OP_SRC;
} else if (mask) {
if (op == CAIRO_OPERATOR_CLEAR) {
#if PIXMAN_HAS_OP_LERP
op = PIXMAN_OP_LERP_CLEAR;
#else
free_src = src = _pixman_image_for_color (CAIRO_COLOR_WHITE);
if (unlikely (src == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
op = PIXMAN_OP_OUT_REVERSE;
#endif
} else if (op == CAIRO_OPERATOR_SOURCE) {
#if PIXMAN_HAS_OP_LERP
op = PIXMAN_OP_LERP_SRC;
#else
return CAIRO_INT_STATUS_UNSUPPORTED;
#endif
} else {
op = _pixman_operator (op);
}
} else {
op = _pixman_operator (op);
}
for (chunk = &boxes->chunks; chunk; chunk = chunk->next) {
for (i = 0; i < chunk->count; i++) {
int x1 = _cairo_fixed_integer_part (chunk->base[i].p1.x);
int y1 = _cairo_fixed_integer_part (chunk->base[i].p1.y);
int x2 = _cairo_fixed_integer_part (chunk->base[i].p2.x);
int y2 = _cairo_fixed_integer_part (chunk->base[i].p2.y);
pixman_image_composite32 (op, src, mask, dst,
x1 + src_x, y1 + src_y,
x1 + mask_x, y1 + mask_y,
x1 + dst_x, y1 + dst_y,
x2 - x1, y2 - y1);
}
}
if (free_src)
pixman_image_unref (free_src);
return CAIRO_STATUS_SUCCESS;
}
#define CAIRO_FIXED_16_16_MIN _cairo_fixed_from_int (-32768)
#define CAIRO_FIXED_16_16_MAX _cairo_fixed_from_int (32767)
static cairo_bool_t
line_exceeds_16_16 (const cairo_line_t *line)
{
return
line->p1.x <= CAIRO_FIXED_16_16_MIN ||
line->p1.x >= CAIRO_FIXED_16_16_MAX ||
line->p2.x <= CAIRO_FIXED_16_16_MIN ||
line->p2.x >= CAIRO_FIXED_16_16_MAX ||
line->p1.y <= CAIRO_FIXED_16_16_MIN ||
line->p1.y >= CAIRO_FIXED_16_16_MAX ||
line->p2.y <= CAIRO_FIXED_16_16_MIN ||
line->p2.y >= CAIRO_FIXED_16_16_MAX;
}
static void
project_line_x_onto_16_16 (const cairo_line_t *line,
cairo_fixed_t top,
cairo_fixed_t bottom,
pixman_line_fixed_t *out)
{
/* XXX use fixed-point arithmetic? */
cairo_point_double_t p1, p2;
double m;
p1.x = _cairo_fixed_to_double (line->p1.x);
p1.y = _cairo_fixed_to_double (line->p1.y);
p2.x = _cairo_fixed_to_double (line->p2.x);
p2.y = _cairo_fixed_to_double (line->p2.y);
m = (p2.x - p1.x) / (p2.y - p1.y);
out->p1.x = _cairo_fixed_16_16_from_double (p1.x + m * _cairo_fixed_to_double (top - line->p1.y));
out->p2.x = _cairo_fixed_16_16_from_double (p1.x + m * _cairo_fixed_to_double (bottom - line->p1.y));
}
void
_pixman_image_add_traps (pixman_image_t *image,
int dst_x, int dst_y,
cairo_traps_t *traps)
{
cairo_trapezoid_t *t = traps->traps;
int num_traps = traps->num_traps;
while (num_traps--) {
pixman_trapezoid_t trap;
/* top/bottom will be clamped to surface bounds */
trap.top = _cairo_fixed_to_16_16 (t->top);
trap.bottom = _cairo_fixed_to_16_16 (t->bottom);
/* However, all the other coordinates will have been left untouched so
* as not to introduce numerical error. Recompute them if they
* exceed the 16.16 limits.
*/
if (unlikely (line_exceeds_16_16 (&t->left))) {
project_line_x_onto_16_16 (&t->left, t->top, t->bottom, &trap.left);
trap.left.p1.y = trap.top;
trap.left.p2.y = trap.bottom;
} else {
trap.left.p1.x = _cairo_fixed_to_16_16 (t->left.p1.x);
trap.left.p1.y = _cairo_fixed_to_16_16 (t->left.p1.y);
trap.left.p2.x = _cairo_fixed_to_16_16 (t->left.p2.x);
trap.left.p2.y = _cairo_fixed_to_16_16 (t->left.p2.y);
}
if (unlikely (line_exceeds_16_16 (&t->right))) {
project_line_x_onto_16_16 (&t->right, t->top, t->bottom, &trap.right);
trap.right.p1.y = trap.top;
trap.right.p2.y = trap.bottom;
} else {
trap.right.p1.x = _cairo_fixed_to_16_16 (t->right.p1.x);
trap.right.p1.y = _cairo_fixed_to_16_16 (t->right.p1.y);
trap.right.p2.x = _cairo_fixed_to_16_16 (t->right.p2.x);
trap.right.p2.y = _cairo_fixed_to_16_16 (t->right.p2.y);
}
pixman_rasterize_trapezoid (image, &trap, -dst_x, -dst_y);
t++;
}
}
static cairo_int_status_t
composite_traps (void *_dst,
cairo_operator_t op,
cairo_surface_t *abstract_src,
int src_x,
int src_y,
int dst_x,
int dst_y,
const cairo_rectangle_int_t *extents,
cairo_antialias_t antialias,
cairo_traps_t *traps)
{
cairo_image_surface_t *dst = (cairo_image_surface_t *) _dst;
cairo_image_source_t *src = (cairo_image_source_t *) abstract_src;
cairo_int_status_t status;
pixman_image_t *mask;
pixman_format_code_t format;
TRACE ((stderr, "%s\n", __FUNCTION__));
/* pixman doesn't eliminate self-intersecting trapezoids/edges */
status = _cairo_bentley_ottmann_tessellate_traps (traps,
CAIRO_FILL_RULE_WINDING);
if (status != CAIRO_INT_STATUS_SUCCESS)
return status;
/* Special case adding trapezoids onto a mask surface; we want to avoid
* creating an intermediate temporary mask unnecessarily.
*
* We make the assumption here that the portion of the trapezoids
* contained within the surface is bounded by [dst_x,dst_y,width,height];
* the Cairo core code passes bounds based on the trapezoid extents.
*/
format = antialias == CAIRO_ANTIALIAS_NONE ? PIXMAN_a1 : PIXMAN_a8;
if (dst->pixman_format == format &&
(abstract_src == NULL ||
(op == CAIRO_OPERATOR_ADD && src->is_opaque_solid)))
{
_pixman_image_add_traps (dst->pixman_image, dst_x, dst_y, traps);
return CAIRO_STATUS_SUCCESS;
}
mask = pixman_image_create_bits (format,
extents->width, extents->height,
NULL, 0);
if (unlikely (mask == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
_pixman_image_add_traps (mask, extents->x, extents->y, traps);
pixman_image_composite32 (_pixman_operator (op),
src->pixman_image, mask, dst->pixman_image,
extents->x + src_x, extents->y + src_y,
0, 0,
extents->x - dst_x, extents->y - dst_y,
extents->width, extents->height);
pixman_image_unref (mask);
return CAIRO_STATUS_SUCCESS;
}
#if PIXMAN_VERSION >= PIXMAN_VERSION_ENCODE(0,22,0)
static void
set_point (pixman_point_fixed_t *p, cairo_point_t *c)
{
p->x = _cairo_fixed_to_16_16 (c->x);
p->y = _cairo_fixed_to_16_16 (c->y);
}
void
_pixman_image_add_tristrip (pixman_image_t *image,
int dst_x, int dst_y,
cairo_tristrip_t *strip)
{
pixman_triangle_t tri;
pixman_point_fixed_t *p[3] = {&tri.p1, &tri.p2, &tri.p3 };
int n;
set_point (p[0], &strip->points[0]);
set_point (p[1], &strip->points[1]);
set_point (p[2], &strip->points[2]);
pixman_add_triangles (image, -dst_x, -dst_y, 1, &tri);
for (n = 3; n < strip->num_points; n++) {
set_point (p[n%3], &strip->points[n]);
pixman_add_triangles (image, -dst_x, -dst_y, 1, &tri);
}
}
static cairo_int_status_t
composite_tristrip (void *_dst,
cairo_operator_t op,
cairo_surface_t *abstract_src,
int src_x,
int src_y,
int dst_x,
int dst_y,
const cairo_rectangle_int_t *extents,
cairo_antialias_t antialias,
cairo_tristrip_t *strip)
{
cairo_image_surface_t *dst = (cairo_image_surface_t *) _dst;
cairo_image_source_t *src = (cairo_image_source_t *) abstract_src;
pixman_image_t *mask;
pixman_format_code_t format;
TRACE ((stderr, "%s\n", __FUNCTION__));
if (strip->num_points < 3)
return CAIRO_STATUS_SUCCESS;
if (1) { /* pixman doesn't eliminate self-intersecting triangles/edges */
cairo_int_status_t status;
cairo_traps_t traps;
int n;
_cairo_traps_init (&traps);
for (n = 0; n < strip->num_points; n++) {
cairo_point_t p[4];
p[0] = strip->points[0];
p[1] = strip->points[1];
p[2] = strip->points[2];
p[3] = strip->points[0];
_cairo_traps_tessellate_convex_quad (&traps, p);
}
status = composite_traps (_dst, op, abstract_src,
src_x, src_y,
dst_x, dst_y,
extents, antialias, &traps);
_cairo_traps_fini (&traps);
return status;
}
format = antialias == CAIRO_ANTIALIAS_NONE ? PIXMAN_a1 : PIXMAN_a8;
if (dst->pixman_format == format &&
(abstract_src == NULL ||
(op == CAIRO_OPERATOR_ADD && src->is_opaque_solid)))
{
_pixman_image_add_tristrip (dst->pixman_image, dst_x, dst_y, strip);
return CAIRO_STATUS_SUCCESS;
}
mask = pixman_image_create_bits (format,
extents->width, extents->height,
NULL, 0);
if (unlikely (mask == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
_pixman_image_add_tristrip (mask, extents->x, extents->y, strip);
pixman_image_composite32 (_pixman_operator (op),
src->pixman_image, mask, dst->pixman_image,
extents->x + src_x, extents->y + src_y,
0, 0,
extents->x - dst_x, extents->y - dst_y,
extents->width, extents->height);
pixman_image_unref (mask);
return CAIRO_STATUS_SUCCESS;
}
#endif
static cairo_int_status_t
check_composite_glyphs (const cairo_composite_rectangles_t *extents,
cairo_scaled_font_t *scaled_font,
cairo_glyph_t *glyphs,
int *num_glyphs)
{
return CAIRO_STATUS_SUCCESS;
}
#if HAS_PIXMAN_GLYPHS
static pixman_glyph_cache_t *global_glyph_cache;
static inline pixman_glyph_cache_t *
get_glyph_cache (void)
{
if (!global_glyph_cache)
global_glyph_cache = pixman_glyph_cache_create ();
return global_glyph_cache;
}
void
_cairo_image_scaled_glyph_fini (cairo_scaled_font_t *scaled_font,
cairo_scaled_glyph_t *scaled_glyph)
{
CAIRO_MUTEX_LOCK (_cairo_glyph_cache_mutex);
if (global_glyph_cache) {
pixman_glyph_cache_remove (
global_glyph_cache, scaled_font,
(void *)_cairo_scaled_glyph_index (scaled_glyph));
}
CAIRO_MUTEX_UNLOCK (_cairo_glyph_cache_mutex);
}
static cairo_int_status_t
composite_glyphs (void *_dst,
cairo_operator_t op,
cairo_surface_t *_src,
int src_x,
int src_y,
int dst_x,
int dst_y,
cairo_composite_glyphs_info_t *info)
{
cairo_int_status_t status = CAIRO_INT_STATUS_SUCCESS;
pixman_glyph_cache_t *glyph_cache;
pixman_glyph_t pglyphs_stack[CAIRO_STACK_ARRAY_LENGTH (pixman_glyph_t)];
pixman_glyph_t *pglyphs = pglyphs_stack;
pixman_glyph_t *pg;
int i;
TRACE ((stderr, "%s\n", __FUNCTION__));
CAIRO_MUTEX_LOCK (_cairo_glyph_cache_mutex);
glyph_cache = get_glyph_cache();
if (unlikely (glyph_cache == NULL)) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto out_unlock;
}
pixman_glyph_cache_freeze (glyph_cache);
if (info->num_glyphs > ARRAY_LENGTH (pglyphs_stack)) {
pglyphs = _cairo_malloc_ab (info->num_glyphs, sizeof (pixman_glyph_t));
if (unlikely (pglyphs == NULL)) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto out_thaw;
}
}
pg = pglyphs;
for (i = 0; i < info->num_glyphs; i++) {
unsigned long index = info->glyphs[i].index;
const void *glyph;
glyph = pixman_glyph_cache_lookup (glyph_cache, info->font, (void *)index);
if (!glyph) {
cairo_scaled_glyph_t *scaled_glyph;
cairo_image_surface_t *glyph_surface;
/* This call can actually end up recursing, so we have to
* drop the mutex around it.
*/
CAIRO_MUTEX_UNLOCK (_cairo_glyph_cache_mutex);
status = _cairo_scaled_glyph_lookup (info->font, index,
CAIRO_SCALED_GLYPH_INFO_SURFACE,
&scaled_glyph);
CAIRO_MUTEX_LOCK (_cairo_glyph_cache_mutex);
if (unlikely (status))
goto out_thaw;
glyph_surface = scaled_glyph->surface;
glyph = pixman_glyph_cache_insert (glyph_cache, info->font, (void *)index,
glyph_surface->base.device_transform.x0,
glyph_surface->base.device_transform.y0,
glyph_surface->pixman_image);
if (unlikely (!glyph)) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto out_thaw;
}
}
pg->x = _cairo_lround (info->glyphs[i].x);
pg->y = _cairo_lround (info->glyphs[i].y);
pg->glyph = glyph;
pg++;
}
if (info->use_mask) {
pixman_format_code_t mask_format;
mask_format = pixman_glyph_get_mask_format (glyph_cache, pg - pglyphs, pglyphs);
pixman_composite_glyphs (_pixman_operator (op),
((cairo_image_source_t *)_src)->pixman_image,
to_pixman_image (_dst),
mask_format,
info->extents.x + src_x, info->extents.y + src_y,
info->extents.x, info->extents.y,
info->extents.x - dst_x, info->extents.y - dst_y,
info->extents.width, info->extents.height,
glyph_cache, pg - pglyphs, pglyphs);
} else {
pixman_composite_glyphs_no_mask (_pixman_operator (op),
((cairo_image_source_t *)_src)->pixman_image,
to_pixman_image (_dst),
src_x, src_y,
- dst_x, - dst_y,
glyph_cache, pg - pglyphs, pglyphs);
}
out_thaw:
pixman_glyph_cache_thaw (glyph_cache);
if (pglyphs != pglyphs_stack)
free(pglyphs);
out_unlock:
CAIRO_MUTEX_UNLOCK (_cairo_glyph_cache_mutex);
return status;
}
#else
void
_cairo_image_scaled_glyph_fini (cairo_scaled_font_t *scaled_font,
cairo_scaled_glyph_t *scaled_glyph)
{
}
static cairo_int_status_t
composite_one_glyph (void *_dst,
cairo_operator_t op,
cairo_surface_t *_src,
int src_x,
int src_y,
int dst_x,
int dst_y,
cairo_composite_glyphs_info_t *info)
{
cairo_image_surface_t *glyph_surface;
cairo_scaled_glyph_t *scaled_glyph;
cairo_status_t status;
int x, y;
TRACE ((stderr, "%s\n", __FUNCTION__));
status = _cairo_scaled_glyph_lookup (info->font,
info->glyphs[0].index,
CAIRO_SCALED_GLYPH_INFO_SURFACE,
&scaled_glyph);
if (unlikely (status))
return status;
glyph_surface = scaled_glyph->surface;
if (glyph_surface->width == 0 || glyph_surface->height == 0)
return CAIRO_INT_STATUS_NOTHING_TO_DO;
/* round glyph locations to the nearest pixel */
/* XXX: FRAGILE: We're ignoring device_transform scaling here. A bug? */
x = _cairo_lround (info->glyphs[0].x -
glyph_surface->base.device_transform.x0);
y = _cairo_lround (info->glyphs[0].y -
glyph_surface->base.device_transform.y0);
pixman_image_composite32 (_pixman_operator (op),
((cairo_image_source_t *)_src)->pixman_image,
glyph_surface->pixman_image,
to_pixman_image (_dst),
x + src_x, y + src_y,
0, 0,
x - dst_x, y - dst_y,
glyph_surface->width,
glyph_surface->height);
return CAIRO_INT_STATUS_SUCCESS;
}
static cairo_int_status_t
composite_glyphs_via_mask (void *_dst,
cairo_operator_t op,
cairo_surface_t *_src,
int src_x,
int src_y,
int dst_x,
int dst_y,
cairo_composite_glyphs_info_t *info)
{
cairo_scaled_glyph_t *glyph_cache[64];
pixman_image_t *white = _pixman_image_for_color (CAIRO_COLOR_WHITE);
cairo_scaled_glyph_t *scaled_glyph;
uint8_t buf[2048];
pixman_image_t *mask;
pixman_format_code_t format;
cairo_status_t status;
int i;
TRACE ((stderr, "%s\n", __FUNCTION__));
if (unlikely (white == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
/* XXX convert the glyphs to common formats a8/a8r8g8b8 to hit
* optimised paths through pixman. Should we increase the bit
* depth of the target surface, we should reconsider the appropriate
* mask formats.
*/
status = _cairo_scaled_glyph_lookup (info->font,
info->glyphs[0].index,
CAIRO_SCALED_GLYPH_INFO_SURFACE,
&scaled_glyph);
if (unlikely (status)) {
pixman_image_unref (white);
return status;
}
memset (glyph_cache, 0, sizeof (glyph_cache));
glyph_cache[info->glyphs[0].index % ARRAY_LENGTH (glyph_cache)] = scaled_glyph;
format = PIXMAN_a8;
i = (info->extents.width + 3) & ~3;
if (scaled_glyph->surface->base.content & CAIRO_CONTENT_COLOR) {
format = PIXMAN_a8r8g8b8;
i = info->extents.width * 4;
}
if (i * info->extents.height > (int) sizeof (buf)) {
mask = pixman_image_create_bits (format,
info->extents.width,
info->extents.height,
NULL, 0);
} else {
memset (buf, 0, i * info->extents.height);
mask = pixman_image_create_bits (format,
info->extents.width,
info->extents.height,
(uint32_t *)buf, i);
}
if (unlikely (mask == NULL)) {
pixman_image_unref (white);
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
status = CAIRO_STATUS_SUCCESS;
for (i = 0; i < info->num_glyphs; i++) {
unsigned long glyph_index = info->glyphs[i].index;
int cache_index = glyph_index % ARRAY_LENGTH (glyph_cache);
cairo_image_surface_t *glyph_surface;
int x, y;
scaled_glyph = glyph_cache[cache_index];
if (scaled_glyph == NULL ||
_cairo_scaled_glyph_index (scaled_glyph) != glyph_index)
{
status = _cairo_scaled_glyph_lookup (info->font, glyph_index,
CAIRO_SCALED_GLYPH_INFO_SURFACE,
&scaled_glyph);
if (unlikely (status)) {
pixman_image_unref (mask);
pixman_image_unref (white);
return status;
}
glyph_cache[cache_index] = scaled_glyph;
}
glyph_surface = scaled_glyph->surface;
if (glyph_surface->width && glyph_surface->height) {
if (glyph_surface->base.content & CAIRO_CONTENT_COLOR &&
format == PIXMAN_a8) {
pixman_image_t *ca_mask;
format = PIXMAN_a8r8g8b8;
ca_mask = pixman_image_create_bits (format,
info->extents.width,
info->extents.height,
NULL, 0);
if (unlikely (ca_mask == NULL)) {
pixman_image_unref (mask);
pixman_image_unref (white);
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
pixman_image_composite32 (PIXMAN_OP_SRC,
white, mask, ca_mask,
0, 0,
0, 0,
0, 0,
info->extents.width,
info->extents.height);
pixman_image_unref (mask);
mask = ca_mask;
}
/* round glyph locations to the nearest pixel */
/* XXX: FRAGILE: We're ignoring device_transform scaling here. A bug? */
x = _cairo_lround (info->glyphs[i].x -
glyph_surface->base.device_transform.x0);
y = _cairo_lround (info->glyphs[i].y -
glyph_surface->base.device_transform.y0);
if (glyph_surface->pixman_format == format) {
pixman_image_composite32 (PIXMAN_OP_ADD,
glyph_surface->pixman_image, NULL, mask,
0, 0,
0, 0,
x - info->extents.x, y - info->extents.y,
glyph_surface->width,
glyph_surface->height);
} else {
pixman_image_composite32 (PIXMAN_OP_ADD,
white, glyph_surface->pixman_image, mask,
0, 0,
0, 0,
x - info->extents.x, y - info->extents.y,
glyph_surface->width,
glyph_surface->height);
}
}
}
if (format == PIXMAN_a8r8g8b8)
pixman_image_set_component_alpha (mask, TRUE);
pixman_image_composite32 (_pixman_operator (op),
((cairo_image_source_t *)_src)->pixman_image,
mask,
to_pixman_image (_dst),
info->extents.x + src_x, info->extents.y + src_y,
0, 0,
info->extents.x - dst_x, info->extents.y - dst_y,
info->extents.width, info->extents.height);
pixman_image_unref (mask);
pixman_image_unref (white);
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
composite_glyphs (void *_dst,
cairo_operator_t op,
cairo_surface_t *_src,
int src_x,
int src_y,
int dst_x,
int dst_y,
cairo_composite_glyphs_info_t *info)
{
cairo_scaled_glyph_t *glyph_cache[64];
pixman_image_t *dst, *src;
cairo_status_t status;
int i;
TRACE ((stderr, "%s\n", __FUNCTION__));
if (info->num_glyphs == 1)
return composite_one_glyph(_dst, op, _src, src_x, src_y, dst_x, dst_y, info);
if (info->use_mask)
return composite_glyphs_via_mask(_dst, op, _src, src_x, src_y, dst_x, dst_y, info);
op = _pixman_operator (op);
dst = to_pixman_image (_dst);
src = ((cairo_image_source_t *)_src)->pixman_image;
memset (glyph_cache, 0, sizeof (glyph_cache));
status = CAIRO_STATUS_SUCCESS;
for (i = 0; i < info->num_glyphs; i++) {
int x, y;
cairo_image_surface_t *glyph_surface;
cairo_scaled_glyph_t *scaled_glyph;
unsigned long glyph_index = info->glyphs[i].index;
int cache_index = glyph_index % ARRAY_LENGTH (glyph_cache);
scaled_glyph = glyph_cache[cache_index];
if (scaled_glyph == NULL ||
_cairo_scaled_glyph_index (scaled_glyph) != glyph_index)
{
status = _cairo_scaled_glyph_lookup (info->font, glyph_index,
CAIRO_SCALED_GLYPH_INFO_SURFACE,
&scaled_glyph);
if (unlikely (status))
break;
glyph_cache[cache_index] = scaled_glyph;
}
glyph_surface = scaled_glyph->surface;
if (glyph_surface->width && glyph_surface->height) {
/* round glyph locations to the nearest pixel */
/* XXX: FRAGILE: We're ignoring device_transform scaling here. A bug? */
x = _cairo_lround (info->glyphs[i].x -
glyph_surface->base.device_transform.x0);
y = _cairo_lround (info->glyphs[i].y -
glyph_surface->base.device_transform.y0);
pixman_image_composite32 (op, src, glyph_surface->pixman_image, dst,
x + src_x, y + src_y,
0, 0,
x - dst_x, y - dst_y,
glyph_surface->width,
glyph_surface->height);
}
}
return status;
}
#endif
static cairo_int_status_t
check_composite (const cairo_composite_rectangles_t *extents)
{
return CAIRO_STATUS_SUCCESS;
}
const cairo_compositor_t *
_cairo_image_traps_compositor_get (void)
{
static cairo_traps_compositor_t compositor;
if (compositor.base.delegate == NULL) {
_cairo_traps_compositor_init (&compositor,
&__cairo_no_compositor);
compositor.acquire = acquire;
compositor.release = release;
compositor.set_clip_region = set_clip_region;
compositor.pattern_to_surface = _cairo_image_source_create_for_pattern;
compositor.draw_image_boxes = draw_image_boxes;
//compositor.copy_boxes = copy_boxes;
compositor.fill_boxes = fill_boxes;
compositor.check_composite = check_composite;
compositor.composite = composite;
compositor.lerp = lerp;
//compositor.check_composite_boxes = check_composite_boxes;
compositor.composite_boxes = composite_boxes;
//compositor.check_composite_traps = check_composite_traps;
compositor.composite_traps = composite_traps;
//compositor.check_composite_tristrip = check_composite_traps;
#if PIXMAN_VERSION >= PIXMAN_VERSION_ENCODE(0,22,0)
compositor.composite_tristrip = composite_tristrip;
#endif
compositor.check_composite_glyphs = check_composite_glyphs;
compositor.composite_glyphs = composite_glyphs;
}
return &compositor.base;
}
const cairo_compositor_t *
_cairo_image_mask_compositor_get (void)
{
static cairo_mask_compositor_t compositor;
if (compositor.base.delegate == NULL) {
_cairo_mask_compositor_init (&compositor,
_cairo_image_traps_compositor_get ());
compositor.acquire = acquire;
compositor.release = release;
compositor.set_clip_region = set_clip_region;
compositor.pattern_to_surface = _cairo_image_source_create_for_pattern;
compositor.draw_image_boxes = draw_image_boxes;
compositor.fill_rectangles = fill_rectangles;
compositor.fill_boxes = fill_boxes;
compositor.check_composite = check_composite;
compositor.composite = composite;
//compositor.lerp = lerp;
//compositor.check_composite_boxes = check_composite_boxes;
compositor.composite_boxes = composite_boxes;
compositor.check_composite_glyphs = check_composite_glyphs;
compositor.composite_glyphs = composite_glyphs;
}
return &compositor.base;
}
#if PIXMAN_HAS_COMPOSITOR
typedef struct _cairo_image_span_renderer {
cairo_span_renderer_t base;
pixman_image_compositor_t *compositor;
pixman_image_t *src, *mask;
float opacity;
cairo_rectangle_int_t extents;
} cairo_image_span_renderer_t;
COMPILE_TIME_ASSERT (sizeof (cairo_image_span_renderer_t) <= sizeof (cairo_abstract_span_renderer_t));
static cairo_status_t
_cairo_image_bounded_opaque_spans (void *abstract_renderer,
int y, int height,
const cairo_half_open_span_t *spans,
unsigned num_spans)
{
cairo_image_span_renderer_t *r = abstract_renderer;
if (num_spans == 0)
return CAIRO_STATUS_SUCCESS;
do {
if (spans[0].coverage)
pixman_image_compositor_blt (r->compositor,
spans[0].x, y,
spans[1].x - spans[0].x, height,
spans[0].coverage);
spans++;
} while (--num_spans > 1);
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_image_bounded_spans (void *abstract_renderer,
int y, int height,
const cairo_half_open_span_t *spans,
unsigned num_spans)
{
cairo_image_span_renderer_t *r = abstract_renderer;
if (num_spans == 0)
return CAIRO_STATUS_SUCCESS;
do {
if (spans[0].coverage) {
pixman_image_compositor_blt (r->compositor,
spans[0].x, y,
spans[1].x - spans[0].x, height,
r->opacity * spans[0].coverage);
}
spans++;
} while (--num_spans > 1);
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_image_unbounded_spans (void *abstract_renderer,
int y, int height,
const cairo_half_open_span_t *spans,
unsigned num_spans)
{
cairo_image_span_renderer_t *r = abstract_renderer;
assert (y + height <= r->extents.height);
if (y > r->extents.y) {
pixman_image_compositor_blt (r->compositor,
r->extents.x, r->extents.y,
r->extents.width, y - r->extents.y,
0);
}
if (num_spans == 0) {
pixman_image_compositor_blt (r->compositor,
r->extents.x, y,
r->extents.width, height,
0);
} else {
if (spans[0].x != r->extents.x) {
pixman_image_compositor_blt (r->compositor,
r->extents.x, y,
spans[0].x - r->extents.x,
height,
0);
}
do {
assert (spans[0].x < r->extents.x + r->extents.width);
pixman_image_compositor_blt (r->compositor,
spans[0].x, y,
spans[1].x - spans[0].x, height,
r->opacity * spans[0].coverage);
spans++;
} while (--num_spans > 1);
if (spans[0].x != r->extents.x + r->extents.width) {
assert (spans[0].x < r->extents.x + r->extents.width);
pixman_image_compositor_blt (r->compositor,
spans[0].x, y,
r->extents.x + r->extents.width - spans[0].x, height,
0);
}
}
r->extents.y = y + height;
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_image_clipped_spans (void *abstract_renderer,
int y, int height,
const cairo_half_open_span_t *spans,
unsigned num_spans)
{
cairo_image_span_renderer_t *r = abstract_renderer;
assert (num_spans);
do {
if (! spans[0].inverse)
pixman_image_compositor_blt (r->compositor,
spans[0].x, y,
spans[1].x - spans[0].x, height,
r->opacity * spans[0].coverage);
spans++;
} while (--num_spans > 1);
r->extents.y = y + height;
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_image_finish_unbounded_spans (void *abstract_renderer)
{
cairo_image_span_renderer_t *r = abstract_renderer;
if (r->extents.y < r->extents.height) {
pixman_image_compositor_blt (r->compositor,
r->extents.x, r->extents.y,
r->extents.width,
r->extents.height - r->extents.y,
0);
}
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
span_renderer_init (cairo_abstract_span_renderer_t *_r,
const cairo_composite_rectangles_t *composite,
cairo_bool_t needs_clip)
{
cairo_image_span_renderer_t *r = (cairo_image_span_renderer_t *)_r;
cairo_image_surface_t *dst = (cairo_image_surface_t *)composite->surface;
const cairo_pattern_t *source = &composite->source_pattern.base;
cairo_operator_t op = composite->op;
int src_x, src_y;
int mask_x, mask_y;
TRACE ((stderr, "%s\n", __FUNCTION__));
if (op == CAIRO_OPERATOR_CLEAR) {
op = PIXMAN_OP_LERP_CLEAR;
} else if (dst->base.is_clear &&
(op == CAIRO_OPERATOR_SOURCE ||
op == CAIRO_OPERATOR_OVER ||
op == CAIRO_OPERATOR_ADD)) {
op = PIXMAN_OP_SRC;
} else if (op == CAIRO_OPERATOR_SOURCE) {
op = PIXMAN_OP_LERP_SRC;
} else {
op = _pixman_operator (op);
}
r->compositor = NULL;
r->mask = NULL;
r->src = _pixman_image_for_pattern (dst, source, FALSE,
&composite->unbounded,
&composite->source_sample_area,
&src_x, &src_y);
if (unlikely (r->src == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
r->opacity = 1.0;
if (composite->mask_pattern.base.type == CAIRO_PATTERN_TYPE_SOLID) {
r->opacity = composite->mask_pattern.solid.color.alpha;
} else {
r->mask = _pixman_image_for_pattern (dst,
&composite->mask_pattern.base,
TRUE,
&composite->unbounded,
&composite->mask_sample_area,
&mask_x, &mask_y);
if (unlikely (r->mask == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
/* XXX Component-alpha? */
if ((dst->base.content & CAIRO_CONTENT_COLOR) == 0 &&
_cairo_pattern_is_opaque (source, &composite->source_sample_area))
{
pixman_image_unref (r->src);
r->src = r->mask;
src_x = mask_x;
src_y = mask_y;
r->mask = NULL;
}
}
if (composite->is_bounded) {
if (r->opacity == 1.)
r->base.render_rows = _cairo_image_bounded_opaque_spans;
else
r->base.render_rows = _cairo_image_bounded_spans;
r->base.finish = NULL;
} else {
if (needs_clip)
r->base.render_rows = _cairo_image_clipped_spans;
else
r->base.render_rows = _cairo_image_unbounded_spans;
r->base.finish = _cairo_image_finish_unbounded_spans;
r->extents = composite->unbounded;
r->extents.height += r->extents.y;
}
r->compositor =
pixman_image_create_compositor (op, r->src, r->mask, dst->pixman_image,
composite->unbounded.x + src_x,
composite->unbounded.y + src_y,
composite->unbounded.x + mask_x,
composite->unbounded.y + mask_y,
composite->unbounded.x,
composite->unbounded.y,
composite->unbounded.width,
composite->unbounded.height);
if (unlikely (r->compositor == NULL))
return CAIRO_INT_STATUS_NOTHING_TO_DO;
return CAIRO_STATUS_SUCCESS;
}
static void
span_renderer_fini (cairo_abstract_span_renderer_t *_r,
cairo_int_status_t status)
{
cairo_image_span_renderer_t *r = (cairo_image_span_renderer_t *) _r;
TRACE ((stderr, "%s\n", __FUNCTION__));
if (status == CAIRO_INT_STATUS_SUCCESS && r->base.finish)
r->base.finish (r);
if (r->compositor)
pixman_image_compositor_destroy (r->compositor);
if (r->src)
pixman_image_unref (r->src);
if (r->mask)
pixman_image_unref (r->mask);
}
#else
typedef struct _cairo_image_span_renderer {
cairo_span_renderer_t base;
const cairo_composite_rectangles_t *composite;
float opacity;
uint8_t op;
int bpp;
pixman_image_t *src, *mask;
union {
struct fill {
int stride;
uint8_t *data;
uint32_t pixel;
} fill;
struct blit {
int stride;
uint8_t *data;
int src_stride;
uint8_t *src_data;
} blit;
struct composite {
pixman_image_t *dst;
int src_x, src_y;
int mask_x, mask_y;
int run_length;
} composite;
struct finish {
cairo_rectangle_int_t extents;
int src_x, src_y;
int stride;
uint8_t *data;
} mask;
} u;
uint8_t _buf[0];
#define SZ_BUF (int)(sizeof (cairo_abstract_span_renderer_t) - sizeof (cairo_image_span_renderer_t))
} cairo_image_span_renderer_t;
COMPILE_TIME_ASSERT (sizeof (cairo_image_span_renderer_t) <= sizeof (cairo_abstract_span_renderer_t));
static cairo_status_t
_cairo_image_spans (void *abstract_renderer,
int y, int height,
const cairo_half_open_span_t *spans,
unsigned num_spans)
{
cairo_image_span_renderer_t *r = abstract_renderer;
uint8_t *mask, *row;
int len;
if (num_spans == 0)
return CAIRO_STATUS_SUCCESS;
mask = r->u.mask.data + (y - r->u.mask.extents.y) * r->u.mask.stride;
mask += spans[0].x - r->u.mask.extents.x;
row = mask;
do {
len = spans[1].x - spans[0].x;
if (spans[0].coverage) {
*row++ = r->opacity * spans[0].coverage;
if (--len)
memset (row, row[-1], len);
}
row += len;
spans++;
} while (--num_spans > 1);
len = row - mask;
row = mask;
while (--height) {
mask += r->u.mask.stride;
memcpy (mask, row, len);
}
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_image_spans_and_zero (void *abstract_renderer,
int y, int height,
const cairo_half_open_span_t *spans,
unsigned num_spans)
{
cairo_image_span_renderer_t *r = abstract_renderer;
uint8_t *mask;
int len;
mask = r->u.mask.data;
if (y > r->u.mask.extents.y) {
len = (y - r->u.mask.extents.y) * r->u.mask.stride;
memset (mask, 0, len);
mask += len;
}
r->u.mask.extents.y = y + height;
r->u.mask.data = mask + height * r->u.mask.stride;
if (num_spans == 0) {
memset (mask, 0, height * r->u.mask.stride);
} else {
uint8_t *row = mask;
if (spans[0].x != r->u.mask.extents.x) {
len = spans[0].x - r->u.mask.extents.x;
memset (row, 0, len);
row += len;
}
do {
len = spans[1].x - spans[0].x;
*row++ = r->opacity * spans[0].coverage;
if (len > 1) {
memset (row, row[-1], --len);
row += len;
}
spans++;
} while (--num_spans > 1);
if (spans[0].x != r->u.mask.extents.x + r->u.mask.extents.width) {
len = r->u.mask.extents.x + r->u.mask.extents.width - spans[0].x;
memset (row, 0, len);
}
row = mask;
while (--height) {
mask += r->u.mask.stride;
memcpy (mask, row, r->u.mask.extents.width);
}
}
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_image_finish_spans_and_zero (void *abstract_renderer)
{
cairo_image_span_renderer_t *r = abstract_renderer;
if (r->u.mask.extents.y < r->u.mask.extents.height)
memset (r->u.mask.data, 0, (r->u.mask.extents.height - r->u.mask.extents.y) * r->u.mask.stride);
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_fill8_spans (void *abstract_renderer, int y, int h,
const cairo_half_open_span_t *spans, unsigned num_spans)
{
cairo_image_span_renderer_t *r = abstract_renderer;
if (num_spans == 0)
return CAIRO_STATUS_SUCCESS;
if (likely(h == 1)) {
do {
if (spans[0].coverage) {
int len = spans[1].x - spans[0].x;
uint8_t *d = r->u.fill.data + r->u.fill.stride*y + spans[0].x;
if (len == 1)
*d = r->u.fill.pixel;
else
memset(d, r->u.fill.pixel, len);
}
spans++;
} while (--num_spans > 1);
} else {
do {
if (spans[0].coverage) {
int yy = y, hh = h;
do {
int len = spans[1].x - spans[0].x;
uint8_t *d = r->u.fill.data + r->u.fill.stride*yy + spans[0].x;
if (len == 1)
*d = r->u.fill.pixel;
else
memset(d, r->u.fill.pixel, len);
yy++;
} while (--hh);
}
spans++;
} while (--num_spans > 1);
}
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_fill16_spans (void *abstract_renderer, int y, int h,
const cairo_half_open_span_t *spans, unsigned num_spans)
{
cairo_image_span_renderer_t *r = abstract_renderer;
if (num_spans == 0)
return CAIRO_STATUS_SUCCESS;
if (likely(h == 1)) {
do {
if (spans[0].coverage) {
int len = spans[1].x - spans[0].x;
uint16_t *d = (uint16_t*)(r->u.fill.data + r->u.fill.stride*y + spans[0].x*2);
while (len--)
*d++ = r->u.fill.pixel;
}
spans++;
} while (--num_spans > 1);
} else {
do {
if (spans[0].coverage) {
int yy = y, hh = h;
do {
int len = spans[1].x - spans[0].x;
uint16_t *d = (uint16_t*)(r->u.fill.data + r->u.fill.stride*yy + spans[0].x*2);
while (len--)
*d++ = r->u.fill.pixel;
yy++;
} while (--hh);
}
spans++;
} while (--num_spans > 1);
}
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_fill32_spans (void *abstract_renderer, int y, int h,
const cairo_half_open_span_t *spans, unsigned num_spans)
{
cairo_image_span_renderer_t *r = abstract_renderer;
if (num_spans == 0)
return CAIRO_STATUS_SUCCESS;
if (likely(h == 1)) {
do {
if (spans[0].coverage) {
int len = spans[1].x - spans[0].x;
if (len > 32) {
pixman_fill ((uint32_t *)r->u.fill.data, r->u.fill.stride / sizeof(uint32_t), r->bpp,
spans[0].x, y, len, 1, r->u.fill.pixel);
} else {
uint32_t *d = (uint32_t*)(r->u.fill.data + r->u.fill.stride*y + spans[0].x*4);
while (len--)
*d++ = r->u.fill.pixel;
}
}
spans++;
} while (--num_spans > 1);
} else {
do {
if (spans[0].coverage) {
if (spans[1].x - spans[0].x > 16) {
pixman_fill ((uint32_t *)r->u.fill.data, r->u.fill.stride / sizeof(uint32_t), r->bpp,
spans[0].x, y, spans[1].x - spans[0].x, h,
r->u.fill.pixel);
} else {
int yy = y, hh = h;
do {
int len = spans[1].x - spans[0].x;
uint32_t *d = (uint32_t*)(r->u.fill.data + r->u.fill.stride*yy + spans[0].x*4);
while (len--)
*d++ = r->u.fill.pixel;
yy++;
} while (--hh);
}
}
spans++;
} while (--num_spans > 1);
}
return CAIRO_STATUS_SUCCESS;
}
#if 0
static cairo_status_t
_fill_spans (void *abstract_renderer, int y, int h,
const cairo_half_open_span_t *spans, unsigned num_spans)
{
cairo_image_span_renderer_t *r = abstract_renderer;
if (num_spans == 0)
return CAIRO_STATUS_SUCCESS;
do {
if (spans[0].coverage) {
pixman_fill ((uint32_t *) r->data, r->stride, r->bpp,
spans[0].x, y,
spans[1].x - spans[0].x, h,
r->pixel);
}
spans++;
} while (--num_spans > 1);
return CAIRO_STATUS_SUCCESS;
}
#endif
static cairo_status_t
_blit_spans (void *abstract_renderer, int y, int h,
const cairo_half_open_span_t *spans, unsigned num_spans)
{
cairo_image_span_renderer_t *r = abstract_renderer;
int cpp;
if (num_spans == 0)
return CAIRO_STATUS_SUCCESS;
cpp = r->bpp/8;
if (likely (h == 1)) {
uint8_t *src = r->u.blit.src_data + y*r->u.blit.src_stride;
uint8_t *dst = r->u.blit.data + y*r->u.blit.stride;
do {
if (spans[0].coverage) {
void *s = src + spans[0].x*cpp;
void *d = dst + spans[0].x*cpp;
int len = (spans[1].x - spans[0].x) * cpp;
switch (len) {
case 1:
*(uint8_t *)d = *(uint8_t *)s;
break;
case 2:
*(uint16_t *)d = *(uint16_t *)s;
break;
case 4:
*(uint32_t *)d = *(uint32_t *)s;
break;
#if HAVE_UINT64_T
case 8:
*(uint64_t *)d = *(uint64_t *)s;
break;
#endif
default:
memcpy(d, s, len);
break;
}
}
spans++;
} while (--num_spans > 1);
} else {
do {
if (spans[0].coverage) {
int yy = y, hh = h;
do {
void *src = r->u.blit.src_data + yy*r->u.blit.src_stride + spans[0].x*cpp;
void *dst = r->u.blit.data + yy*r->u.blit.stride + spans[0].x*cpp;
int len = (spans[1].x - spans[0].x) * cpp;
switch (len) {
case 1:
*(uint8_t *)dst = *(uint8_t *)src;
break;
case 2:
*(uint16_t *)dst = *(uint16_t *)src;
break;
case 4:
*(uint32_t *)dst = *(uint32_t *)src;
break;
#if HAVE_UINT64_T
case 8:
*(uint64_t *)dst = *(uint64_t *)src;
break;
#endif
default:
memcpy(dst, src, len);
break;
}
yy++;
} while (--hh);
}
spans++;
} while (--num_spans > 1);
}
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_mono_spans (void *abstract_renderer, int y, int h,
const cairo_half_open_span_t *spans, unsigned num_spans)
{
cairo_image_span_renderer_t *r = abstract_renderer;
if (num_spans == 0)
return CAIRO_STATUS_SUCCESS;
do {
if (spans[0].coverage) {
pixman_image_composite32 (r->op,
r->src, NULL, r->u.composite.dst,
spans[0].x + r->u.composite.src_x, y + r->u.composite.src_y,
0, 0,
spans[0].x, y,
spans[1].x - spans[0].x, h);
}
spans++;
} while (--num_spans > 1);
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_mono_unbounded_spans (void *abstract_renderer, int y, int h,
const cairo_half_open_span_t *spans, unsigned num_spans)
{
cairo_image_span_renderer_t *r = abstract_renderer;
if (num_spans == 0) {
pixman_image_composite32 (PIXMAN_OP_CLEAR,
r->src, NULL, r->u.composite.dst,
spans[0].x + r->u.composite.src_x, y + r->u.composite.src_y,
0, 0,
r->composite->unbounded.x, y,
r->composite->unbounded.width, h);
r->u.composite.mask_y = y + h;
return CAIRO_STATUS_SUCCESS;
}
if (y != r->u.composite.mask_y) {
pixman_image_composite32 (PIXMAN_OP_CLEAR,
r->src, NULL, r->u.composite.dst,
spans[0].x + r->u.composite.src_x, y + r->u.composite.src_y,
0, 0,
r->composite->unbounded.x, r->u.composite.mask_y,
r->composite->unbounded.width, y - r->u.composite.mask_y);
}
if (spans[0].x != r->composite->unbounded.x) {
pixman_image_composite32 (PIXMAN_OP_CLEAR,
r->src, NULL, r->u.composite.dst,
spans[0].x + r->u.composite.src_x, y + r->u.composite.src_y,
0, 0,
r->composite->unbounded.x, y,
spans[0].x - r->composite->unbounded.x, h);
}
do {
int op = spans[0].coverage ? r->op : PIXMAN_OP_CLEAR;
pixman_image_composite32 (op,
r->src, NULL, r->u.composite.dst,
spans[0].x + r->u.composite.src_x, y + r->u.composite.src_y,
0, 0,
spans[0].x, y,
spans[1].x - spans[0].x, h);
spans++;
} while (--num_spans > 1);
if (spans[0].x != r->composite->unbounded.x + r->composite->unbounded.width) {
pixman_image_composite32 (PIXMAN_OP_CLEAR,
r->src, NULL, r->u.composite.dst,
spans[0].x + r->u.composite.src_x, y + r->u.composite.src_y,
0, 0,
spans[0].x, y,
r->composite->unbounded.x + r->composite->unbounded.width - spans[0].x, h);
}
r->u.composite.mask_y = y + h;
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_mono_finish_unbounded_spans (void *abstract_renderer)
{
cairo_image_span_renderer_t *r = abstract_renderer;
if (r->u.composite.mask_y < r->composite->unbounded.y + r->composite->unbounded.height) {
pixman_image_composite32 (PIXMAN_OP_CLEAR,
r->src, NULL, r->u.composite.dst,
r->composite->unbounded.x + r->u.composite.src_x, r->u.composite.mask_y + r->u.composite.src_y,
0, 0,
r->composite->unbounded.x, r->u.composite.mask_y,
r->composite->unbounded.width,
r->composite->unbounded.y + r->composite->unbounded.height - r->u.composite.mask_y);
}
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
mono_renderer_init (cairo_image_span_renderer_t *r,
const cairo_composite_rectangles_t *composite,
cairo_antialias_t antialias,
cairo_bool_t needs_clip)
{
cairo_image_surface_t *dst = (cairo_image_surface_t *)composite->surface;
if (antialias != CAIRO_ANTIALIAS_NONE)
return CAIRO_INT_STATUS_UNSUPPORTED;
if (!_cairo_pattern_is_opaque_solid (&composite->mask_pattern.base))
return CAIRO_INT_STATUS_UNSUPPORTED;
r->base.render_rows = NULL;
if (composite->source_pattern.base.type == CAIRO_PATTERN_TYPE_SOLID) {
const cairo_color_t *color;
color = &composite->source_pattern.solid.color;
if (composite->op == CAIRO_OPERATOR_CLEAR)
color = CAIRO_COLOR_TRANSPARENT;
if (fill_reduces_to_source (composite->op, color, dst, &r->u.fill.pixel)) {
/* Use plain C for the fill operations as the span length is
* typically small, too small to payback the startup overheads of
* using SSE2 etc.
*/
switch (PIXMAN_FORMAT_BPP(dst->pixman_format)) {
case 8: r->base.render_rows = _fill8_spans; break;
case 16: r->base.render_rows = _fill16_spans; break;
case 32: r->base.render_rows = _fill32_spans; break;
default: break;
}
r->u.fill.data = dst->data;
r->u.fill.stride = dst->stride;
}
} else if ((composite->op == CAIRO_OPERATOR_SOURCE ||
(composite->op == CAIRO_OPERATOR_OVER &&
(dst->base.is_clear || (dst->base.content & CAIRO_CONTENT_ALPHA) == 0))) &&
composite->source_pattern.base.type == CAIRO_PATTERN_TYPE_SURFACE &&
composite->source_pattern.surface.surface->backend->type == CAIRO_SURFACE_TYPE_IMAGE &&
to_image_surface(composite->source_pattern.surface.surface)->format == dst->format)
{
cairo_image_surface_t *src =
to_image_surface(composite->source_pattern.surface.surface);
int tx, ty;
if (_cairo_matrix_is_integer_translation(&composite->source_pattern.base.matrix,
&tx, &ty) &&
composite->bounded.x + tx >= 0 &&
composite->bounded.y + ty >= 0 &&
composite->bounded.x + composite->bounded.width + tx <= src->width &&
composite->bounded.y + composite->bounded.height + ty <= src->height) {
r->u.blit.stride = dst->stride;
r->u.blit.data = dst->data;
r->u.blit.src_stride = src->stride;
r->u.blit.src_data = src->data + src->stride * ty + tx * 4;
r->base.render_rows = _blit_spans;
}
}
if (r->base.render_rows == NULL) {
r->src = _pixman_image_for_pattern (dst, &composite->source_pattern.base, FALSE,
&composite->unbounded,
&composite->source_sample_area,
&r->u.composite.src_x, &r->u.composite.src_y);
if (unlikely (r->src == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
r->u.composite.dst = to_pixman_image (composite->surface);
r->op = _pixman_operator (composite->op);
if (composite->is_bounded == 0) {
r->base.render_rows = _mono_unbounded_spans;
r->base.finish = _mono_finish_unbounded_spans;
r->u.composite.mask_y = composite->unbounded.y;
} else
r->base.render_rows = _mono_spans;
}
r->bpp = PIXMAN_FORMAT_BPP(dst->pixman_format);
return CAIRO_INT_STATUS_SUCCESS;
}
#define ONE_HALF 0x7f
#define RB_MASK 0x00ff00ff
#define RB_ONE_HALF 0x007f007f
#define RB_MASK_PLUS_ONE 0x01000100
#define G_SHIFT 8
static inline uint32_t
mul8x2_8 (uint32_t a, uint8_t b)
{
uint32_t t = (a & RB_MASK) * b + RB_ONE_HALF;
return ((t + ((t >> G_SHIFT) & RB_MASK)) >> G_SHIFT) & RB_MASK;
}
static inline uint32_t
add8x2_8x2 (uint32_t a, uint32_t b)
{
uint32_t t = a + b;
t |= RB_MASK_PLUS_ONE - ((t >> G_SHIFT) & RB_MASK);
return t & RB_MASK;
}
static inline uint8_t
mul8_8 (uint8_t a, uint8_t b)
{
uint16_t t = a * (uint16_t)b + ONE_HALF;
return ((t >> G_SHIFT) + t) >> G_SHIFT;
}
static inline uint32_t
lerp8x4 (uint32_t src, uint8_t a, uint32_t dst)
{
return (add8x2_8x2 (mul8x2_8 (src, a),
mul8x2_8 (dst, ~a)) |
add8x2_8x2 (mul8x2_8 (src >> G_SHIFT, a),
mul8x2_8 (dst >> G_SHIFT, ~a)) << G_SHIFT);
}
static cairo_status_t
_fill_a8_lerp_opaque_spans (void *abstract_renderer, int y, int h,
const cairo_half_open_span_t *spans, unsigned num_spans)
{
cairo_image_span_renderer_t *r = abstract_renderer;
if (num_spans == 0)
return CAIRO_STATUS_SUCCESS;
if (likely(h == 1)) {
uint8_t *d = r->u.fill.data + r->u.fill.stride*y;
do {
uint8_t a = spans[0].coverage;
if (a) {
int len = spans[1].x - spans[0].x;
if (a == 0xff) {
memset(d + spans[0].x, r->u.fill.pixel, len);
} else {
uint8_t s = mul8_8(a, r->u.fill.pixel);
uint8_t *dst = d + spans[0].x;
a = ~a;
while (len--) {
uint8_t t = mul8_8(*dst, a);
*dst++ = t + s;
}
}
}
spans++;
} while (--num_spans > 1);
} else {
do {
uint8_t a = spans[0].coverage;
if (a) {
int yy = y, hh = h;
if (a == 0xff) {
do {
int len = spans[1].x - spans[0].x;
uint8_t *d = r->u.fill.data + r->u.fill.stride*yy + spans[0].x;
memset(d, r->u.fill.pixel, len);
yy++;
} while (--hh);
} else {
uint8_t s = mul8_8(a, r->u.fill.pixel);
a = ~a;
do {
int len = spans[1].x - spans[0].x;
uint8_t *d = r->u.fill.data + r->u.fill.stride*yy + spans[0].x;
while (len--) {
uint8_t t = mul8_8(*d, a);
*d++ = t + s;
}
yy++;
} while (--hh);
}
}
spans++;
} while (--num_spans > 1);
}
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_fill_xrgb32_lerp_opaque_spans (void *abstract_renderer, int y, int h,
const cairo_half_open_span_t *spans, unsigned num_spans)
{
cairo_image_span_renderer_t *r = abstract_renderer;
if (num_spans == 0)
return CAIRO_STATUS_SUCCESS;
if (likely(h == 1)) {
do {
uint8_t a = spans[0].coverage;
if (a) {
int len = spans[1].x - spans[0].x;
uint32_t *d = (uint32_t*)(r->u.fill.data + r->u.fill.stride*y + spans[0].x*4);
if (a == 0xff) {
if (len > 31) {
pixman_fill ((uint32_t *)r->u.fill.data, r->u.fill.stride / sizeof(uint32_t), 32,
spans[0].x, y, len, 1, r->u.fill.pixel);
} else {
uint32_t *d = (uint32_t*)(r->u.fill.data + r->u.fill.stride*y + spans[0].x*4);
while (len-- > 0)
*d++ = r->u.fill.pixel;
}
} else while (len-- > 0) {
*d = lerp8x4 (r->u.fill.pixel, a, *d);
d++;
}
}
spans++;
} while (--num_spans > 1);
} else {
do {
uint8_t a = spans[0].coverage;
if (a) {
if (a == 0xff) {
if (spans[1].x - spans[0].x > 16) {
pixman_fill ((uint32_t *)r->u.fill.data, r->u.fill.stride / sizeof(uint32_t), 32,
spans[0].x, y, spans[1].x - spans[0].x, h,
r->u.fill.pixel);
} else {
int yy = y, hh = h;
do {
int len = spans[1].x - spans[0].x;
uint32_t *d = (uint32_t*)(r->u.fill.data + r->u.fill.stride*yy + spans[0].x*4);
while (len--)
*d++ = r->u.fill.pixel;
yy++;
} while (--hh);
}
} else {
int yy = y, hh = h;
do {
int len = spans[1].x - spans[0].x;
uint32_t *d = (uint32_t *)(r->u.fill.data + r->u.fill.stride*yy + spans[0].x*4);
while (len--) {
*d = lerp8x4 (r->u.fill.pixel, a, *d);
d++;
}
yy++;
} while (--hh);
}
}
spans++;
} while (--num_spans > 1);
}
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_fill_a8_lerp_spans (void *abstract_renderer, int y, int h,
const cairo_half_open_span_t *spans, unsigned num_spans)
{
cairo_image_span_renderer_t *r = abstract_renderer;
if (num_spans == 0)
return CAIRO_STATUS_SUCCESS;
if (likely(h == 1)) {
do {
uint8_t a = mul8_8 (spans[0].coverage, r->bpp);
if (a) {
int len = spans[1].x - spans[0].x;
uint8_t *d = r->u.fill.data + r->u.fill.stride*y + spans[0].x;
uint16_t p = (uint16_t)a * r->u.fill.pixel + 0x7f;
uint16_t ia = ~a;
while (len--) {
uint16_t t = *d*ia + p;
*d++ = (t + (t>>8)) >> 8;
}
}
spans++;
} while (--num_spans > 1);
} else {
do {
uint8_t a = mul8_8 (spans[0].coverage, r->bpp);
if (a) {
int yy = y, hh = h;
uint16_t p = (uint16_t)a * r->u.fill.pixel + 0x7f;
uint16_t ia = ~a;
do {
int len = spans[1].x - spans[0].x;
uint8_t *d = r->u.fill.data + r->u.fill.stride*yy + spans[0].x;
while (len--) {
uint16_t t = *d*ia + p;
*d++ = (t + (t>>8)) >> 8;
}
yy++;
} while (--hh);
}
spans++;
} while (--num_spans > 1);
}
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_fill_xrgb32_lerp_spans (void *abstract_renderer, int y, int h,
const cairo_half_open_span_t *spans, unsigned num_spans)
{
cairo_image_span_renderer_t *r = abstract_renderer;
if (num_spans == 0)
return CAIRO_STATUS_SUCCESS;
if (likely(h == 1)) {
do {
uint8_t a = mul8_8 (spans[0].coverage, r->bpp);
if (a) {
int len = spans[1].x - spans[0].x;
uint32_t *d = (uint32_t*)(r->u.fill.data + r->u.fill.stride*y + spans[0].x*4);
while (len--) {
*d = lerp8x4 (r->u.fill.pixel, a, *d);
d++;
}
}
spans++;
} while (--num_spans > 1);
} else {
do {
uint8_t a = mul8_8 (spans[0].coverage, r->bpp);
if (a) {
int yy = y, hh = h;
do {
int len = spans[1].x - spans[0].x;
uint32_t *d = (uint32_t *)(r->u.fill.data + r->u.fill.stride*yy + spans[0].x*4);
while (len--) {
*d = lerp8x4 (r->u.fill.pixel, a, *d);
d++;
}
yy++;
} while (--hh);
}
spans++;
} while (--num_spans > 1);
}
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_blit_xrgb32_lerp_spans (void *abstract_renderer, int y, int h,
const cairo_half_open_span_t *spans, unsigned num_spans)
{
cairo_image_span_renderer_t *r = abstract_renderer;
if (num_spans == 0)
return CAIRO_STATUS_SUCCESS;
if (likely(h == 1)) {
uint8_t *src = r->u.blit.src_data + y*r->u.blit.src_stride;
uint8_t *dst = r->u.blit.data + y*r->u.blit.stride;
do {
uint8_t a = mul8_8 (spans[0].coverage, r->bpp);
if (a) {
uint32_t *s = (uint32_t*)src + spans[0].x;
uint32_t *d = (uint32_t*)dst + spans[0].x;
int len = spans[1].x - spans[0].x;
if (a == 0xff) {
if (len == 1)
*d = *s;
else
memcpy(d, s, len*4);
} else {
while (len--) {
*d = lerp8x4 (*s, a, *d);
s++, d++;
}
}
}
spans++;
} while (--num_spans > 1);
} else {
do {
uint8_t a = mul8_8 (spans[0].coverage, r->bpp);
if (a) {
int yy = y, hh = h;
do {
uint32_t *s = (uint32_t *)(r->u.blit.src_data + yy*r->u.blit.src_stride + spans[0].x * 4);
uint32_t *d = (uint32_t *)(r->u.blit.data + yy*r->u.blit.stride + spans[0].x * 4);
int len = spans[1].x - spans[0].x;
if (a == 0xff) {
if (len == 1)
*d = *s;
else
memcpy(d, s, len * 4);
} else {
while (len--) {
*d = lerp8x4 (*s, a, *d);
s++, d++;
}
}
yy++;
} while (--hh);
}
spans++;
} while (--num_spans > 1);
}
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_inplace_spans (void *abstract_renderer,
int y, int h,
const cairo_half_open_span_t *spans,
unsigned num_spans)
{
cairo_image_span_renderer_t *r = abstract_renderer;
uint8_t *mask;
int x0, x1;
if (num_spans == 0)
return CAIRO_STATUS_SUCCESS;
if (num_spans == 2 && spans[0].coverage == 0xff) {
pixman_image_composite32 (r->op, r->src, NULL, r->u.composite.dst,
spans[0].x + r->u.composite.src_x,
y + r->u.composite.src_y,
0, 0,
spans[0].x, y,
spans[1].x - spans[0].x, h);
return CAIRO_STATUS_SUCCESS;
}
mask = (uint8_t *)pixman_image_get_data (r->mask);
x1 = x0 = spans[0].x;
do {
int len = spans[1].x - spans[0].x;
*mask++ = spans[0].coverage;
if (len > 1) {
if (len >= r->u.composite.run_length && spans[0].coverage == 0xff) {
if (x1 != x0) {
pixman_image_composite32 (r->op, r->src, r->mask, r->u.composite.dst,
x0 + r->u.composite.src_x,
y + r->u.composite.src_y,
0, 0,
x0, y,
x1 - x0, h);
}
pixman_image_composite32 (r->op, r->src, NULL, r->u.composite.dst,
spans[0].x + r->u.composite.src_x,
y + r->u.composite.src_y,
0, 0,
spans[0].x, y,
len, h);
mask = (uint8_t *)pixman_image_get_data (r->mask);
x0 = spans[1].x;
} else if (spans[0].coverage == 0x0 &&
x1 - x0 > r->u.composite.run_length) {
pixman_image_composite32 (r->op, r->src, r->mask, r->u.composite.dst,
x0 + r->u.composite.src_x,
y + r->u.composite.src_y,
0, 0,
x0, y,
x1 - x0, h);
mask = (uint8_t *)pixman_image_get_data (r->mask);
x0 = spans[1].x;
}else {
memset (mask, spans[0].coverage,