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Diffstat (limited to 'libs/cairo-1.16.0/src/cairo-gl-spans-compositor.c')
-rw-r--r--libs/cairo-1.16.0/src/cairo-gl-spans-compositor.c556
1 files changed, 556 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/src/cairo-gl-spans-compositor.c b/libs/cairo-1.16.0/src/cairo-gl-spans-compositor.c
new file mode 100644
index 0000000..0a4538a
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-gl-spans-compositor.c
@@ -0,0 +1,556 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Eric Anholt
+ * Copyright © 2009 Chris Wilson
+ * Copyright © 2005,2010 Red Hat, Inc
+ * Copyright © 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 Red Hat, Inc.
+ *
+ * Contributor(s):
+ * Benjamin Otte <otte@gnome.org>
+ * Carl Worth <cworth@cworth.org>
+ * Chris Wilson <chris@chris-wilson.co.uk>
+ * Eric Anholt <eric@anholt.net>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-gl-private.h"
+
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-compositor-private.h"
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-spans-compositor-private.h"
+#include "cairo-surface-backend-private.h"
+
+typedef struct _cairo_gl_span_renderer {
+ cairo_span_renderer_t base;
+
+ cairo_gl_composite_t setup;
+ double opacity;
+
+ cairo_gl_emit_span_t emit;
+
+ int xmin, xmax;
+ int ymin, ymax;
+
+ cairo_gl_context_t *ctx;
+} cairo_gl_span_renderer_t;
+
+static cairo_status_t
+_cairo_gl_bounded_opaque_spans (void *abstract_renderer,
+ int y, int height,
+ const cairo_half_open_span_t *spans,
+ unsigned num_spans)
+{
+ cairo_gl_span_renderer_t *r = abstract_renderer;
+ cairo_gl_emit_span_t emit = r->emit;
+
+ if (num_spans == 0)
+ return CAIRO_STATUS_SUCCESS;
+
+ do {
+ if (spans[0].coverage) {
+ emit (r->ctx,
+ spans[0].x, y,
+ spans[1].x, y + height,
+ spans[0].coverage);
+ }
+
+ spans++;
+ } while (--num_spans > 1);
+
+ return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_gl_bounded_spans (void *abstract_renderer,
+ int y, int height,
+ const cairo_half_open_span_t *spans,
+ unsigned num_spans)
+{
+ cairo_gl_span_renderer_t *r = abstract_renderer;
+ cairo_gl_emit_span_t emit = r->emit;
+
+ if (num_spans == 0)
+ return CAIRO_STATUS_SUCCESS;
+
+ do {
+ if (spans[0].coverage) {
+ emit (r->ctx,
+ spans[0].x, y,
+ spans[1].x, y + height,
+ r->opacity * spans[0].coverage);
+ }
+
+ spans++;
+ } while (--num_spans > 1);
+
+ return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_gl_unbounded_spans (void *abstract_renderer,
+ int y, int height,
+ const cairo_half_open_span_t *spans,
+ unsigned num_spans)
+{
+ cairo_gl_span_renderer_t *r = abstract_renderer;
+ cairo_gl_emit_span_t emit = r->emit;
+
+ if (y > r->ymin) {
+ emit (r->ctx,
+ r->xmin, r->ymin,
+ r->xmax, y,
+ 0);
+ }
+
+ if (num_spans == 0) {
+ emit (r->ctx,
+ r->xmin, y,
+ r->xmax, y + height,
+ 0);
+ } else {
+ if (spans[0].x != r->xmin) {
+ emit (r->ctx,
+ r->xmin, y,
+ spans[0].x, y + height,
+ 0);
+ }
+
+ do {
+ emit (r->ctx,
+ spans[0].x, y,
+ spans[1].x, y + height,
+ r->opacity * spans[0].coverage);
+ spans++;
+ } while (--num_spans > 1);
+
+ if (spans[0].x != r->xmax) {
+ emit (r->ctx,
+ spans[0].x, y,
+ r->xmax, y + height,
+ 0);
+ }
+ }
+
+ r->ymin = y + height;
+ return CAIRO_STATUS_SUCCESS;
+}
+
+/* XXX */
+static cairo_status_t
+_cairo_gl_clipped_spans (void *abstract_renderer,
+ int y, int height,
+ const cairo_half_open_span_t *spans,
+ unsigned num_spans)
+{
+ cairo_gl_span_renderer_t *r = abstract_renderer;
+ cairo_gl_emit_span_t emit = r->emit;
+
+ if (y > r->ymin) {
+ emit (r->ctx,
+ r->xmin, r->ymin,
+ r->xmax, y,
+ 0);
+ }
+
+ if (num_spans == 0) {
+ emit (r->ctx,
+ r->xmin, y,
+ r->xmax, y + height,
+ 0);
+ } else {
+ if (spans[0].x != r->xmin) {
+ emit (r->ctx,
+ r->xmin, y,
+ spans[0].x, y + height,
+ 0);
+ }
+
+ do {
+ emit (r->ctx,
+ spans[0].x, y,
+ spans[1].x, y + height,
+ r->opacity * spans[0].coverage);
+ spans++;
+ } while (--num_spans > 1);
+
+ if (spans[0].x != r->xmax) {
+ emit (r->ctx,
+ spans[0].x, y,
+ r->xmax, y + height,
+ 0);
+ }
+ }
+
+ r->ymin = y + height;
+ return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_gl_finish_unbounded_spans (void *abstract_renderer)
+{
+ cairo_gl_span_renderer_t *r = abstract_renderer;
+ cairo_gl_emit_span_t emit = r->emit;
+
+ if (r->ymax > r->ymin) {
+ emit (r->ctx,
+ r->xmin, r->ymin,
+ r->xmax, r->ymax,
+ 0);
+ }
+
+ return _cairo_gl_context_release (r->ctx, CAIRO_STATUS_SUCCESS);
+}
+
+static cairo_status_t
+_cairo_gl_finish_bounded_spans (void *abstract_renderer)
+{
+ cairo_gl_span_renderer_t *r = abstract_renderer;
+
+ return _cairo_gl_context_release (r->ctx, CAIRO_STATUS_SUCCESS);
+}
+
+static void
+emit_aligned_boxes (cairo_gl_context_t *ctx,
+ const cairo_boxes_t *boxes)
+{
+ const struct _cairo_boxes_chunk *chunk;
+ cairo_gl_emit_rect_t emit = _cairo_gl_context_choose_emit_rect (ctx);
+ int i;
+
+ TRACE ((stderr, "%s: num_boxes=%d\n", __FUNCTION__, boxes->num_boxes));
+ 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);
+ emit (ctx, x1, y1, x2, y2);
+ }
+ }
+}
+
+static cairo_int_status_t
+fill_boxes (void *_dst,
+ cairo_operator_t op,
+ const cairo_color_t *color,
+ cairo_boxes_t *boxes)
+{
+ cairo_gl_composite_t setup;
+ cairo_gl_context_t *ctx;
+ cairo_int_status_t status;
+
+ TRACE ((stderr, "%s\n", __FUNCTION__));
+ status = _cairo_gl_composite_init (&setup, op, _dst, FALSE);
+ if (unlikely (status))
+ goto FAIL;
+
+ _cairo_gl_composite_set_solid_source (&setup, color);
+
+ status = _cairo_gl_composite_begin (&setup, &ctx);
+ if (unlikely (status))
+ goto FAIL;
+
+ emit_aligned_boxes (ctx, boxes);
+ status = _cairo_gl_context_release (ctx, CAIRO_STATUS_SUCCESS);
+
+FAIL:
+ _cairo_gl_composite_fini (&setup);
+ return status;
+}
+
+static cairo_int_status_t
+draw_image_boxes (void *_dst,
+ cairo_image_surface_t *image,
+ cairo_boxes_t *boxes,
+ int dx, int dy)
+{
+ cairo_gl_surface_t *dst = _dst;
+ struct _cairo_boxes_chunk *chunk;
+ int i;
+
+ 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;
+ cairo_status_t status;
+
+ status = _cairo_gl_surface_draw_image (dst, image,
+ x + dx, y + dy,
+ w, h,
+ x, y, TRUE);
+ if (unlikely (status))
+ return status;
+ }
+ }
+
+ return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t copy_boxes (void *_dst,
+ cairo_surface_t *_src,
+ cairo_boxes_t *boxes,
+ const cairo_rectangle_int_t *extents,
+ int dx, int dy)
+{
+ cairo_gl_surface_t *dst = _dst;
+ cairo_gl_surface_t *src = (cairo_gl_surface_t *)_src;
+ cairo_gl_composite_t setup;
+ cairo_gl_context_t *ctx;
+ cairo_int_status_t status;
+
+ TRACE ((stderr, "%s\n", __FUNCTION__));
+ if (! _cairo_gl_surface_is_texture (src))
+ return CAIRO_INT_STATUS_UNSUPPORTED;
+
+ if (src->base.device != dst->base.device)
+ return CAIRO_INT_STATUS_UNSUPPORTED;
+
+ status = _cairo_gl_composite_init (&setup, CAIRO_OPERATOR_SOURCE, _dst, FALSE);
+ if (unlikely (status))
+ goto FAIL;
+
+ _cairo_gl_composite_set_source_operand (&setup, &src->operand);
+ _cairo_gl_operand_translate (&setup.src, -dx, -dy);
+
+ status = _cairo_gl_composite_begin (&setup, &ctx);
+ if (unlikely (status))
+ goto FAIL;
+
+ emit_aligned_boxes (ctx, boxes);
+ status = _cairo_gl_context_release (ctx, CAIRO_STATUS_SUCCESS);
+
+FAIL:
+ _cairo_gl_composite_fini (&setup);
+ return status;
+}
+
+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)
+{
+ cairo_gl_composite_t setup;
+ cairo_gl_context_t *ctx;
+ cairo_int_status_t status;
+ cairo_gl_operand_t tmp_operand;
+ cairo_gl_operand_t *src_operand;
+
+ TRACE ((stderr, "%s mask=(%d,%d), dst=(%d, %d)\n", __FUNCTION__,
+ mask_x, mask_y, dst_x, dst_y));
+
+ if (abstract_mask) {
+ if (op == CAIRO_OPERATOR_CLEAR) {
+ _cairo_gl_solid_operand_init (&tmp_operand, CAIRO_COLOR_WHITE);
+ src_operand = &tmp_operand;
+ op = CAIRO_OPERATOR_DEST_OUT;
+ } else if (op == CAIRO_OPERATOR_SOURCE) {
+ /* requires a LERP in the shader between dest and source */
+ return CAIRO_INT_STATUS_UNSUPPORTED;
+ } else
+ src_operand = source_to_operand (abstract_src);
+ } else
+ src_operand = source_to_operand (abstract_src);
+
+ status = _cairo_gl_composite_init (&setup, op, _dst, FALSE);
+ if (unlikely (status))
+ goto FAIL;
+
+ _cairo_gl_composite_set_source_operand (&setup,
+ src_operand);
+ _cairo_gl_operand_translate (&setup.src, -src_x, -src_y);
+
+ _cairo_gl_composite_set_mask_operand (&setup,
+ source_to_operand (abstract_mask));
+ _cairo_gl_operand_translate (&setup.mask, -mask_x, -mask_y);
+
+ status = _cairo_gl_composite_begin (&setup, &ctx);
+ if (unlikely (status))
+ goto FAIL;
+
+ emit_aligned_boxes (ctx, boxes);
+ status = _cairo_gl_context_release (ctx, CAIRO_STATUS_SUCCESS);
+
+FAIL:
+ _cairo_gl_composite_fini (&setup);
+ if (src_operand == &tmp_operand)
+ _cairo_gl_operand_destroy (&tmp_operand);
+ return status;
+}
+
+static cairo_int_status_t
+_cairo_gl_span_renderer_init (cairo_abstract_span_renderer_t *_r,
+ const cairo_composite_rectangles_t *composite,
+ cairo_antialias_t antialias,
+ cairo_bool_t needs_clip)
+{
+ cairo_gl_span_renderer_t *r = (cairo_gl_span_renderer_t *)_r;
+ const cairo_pattern_t *source = &composite->source_pattern.base;
+ cairo_operator_t op = composite->op;
+ cairo_int_status_t status;
+
+ if (op == CAIRO_OPERATOR_SOURCE) {
+ if (! _cairo_pattern_is_opaque (&composite->source_pattern.base,
+ &composite->source_sample_area))
+ return CAIRO_INT_STATUS_UNSUPPORTED;
+ op = CAIRO_OPERATOR_OVER;
+ }
+
+ /* XXX earlier! */
+ if (op == CAIRO_OPERATOR_CLEAR) {
+ source = &_cairo_pattern_white.base;
+ op = CAIRO_OPERATOR_DEST_OUT;
+ } else if (composite->surface->is_clear &&
+ (op == CAIRO_OPERATOR_SOURCE ||
+ op == CAIRO_OPERATOR_OVER ||
+ op == CAIRO_OPERATOR_ADD)) {
+ op = CAIRO_OPERATOR_SOURCE;
+ } else if (op == CAIRO_OPERATOR_SOURCE) {
+ /* no lerp equivalent without some major PITA */
+ return CAIRO_INT_STATUS_UNSUPPORTED;
+ } else if (! _cairo_gl_operator_is_supported (op))
+ return CAIRO_INT_STATUS_UNSUPPORTED;
+
+ status = _cairo_gl_composite_init (&r->setup,
+ op, (cairo_gl_surface_t *)composite->surface,
+ FALSE);
+ if (unlikely (status))
+ goto FAIL;
+
+ status = _cairo_gl_composite_set_source (&r->setup, source,
+ &composite->source_sample_area,
+ &composite->unbounded,
+ TRUE);
+ if (unlikely (status))
+ goto FAIL;
+
+ r->opacity = 1.0;
+ if (composite->mask_pattern.base.type == CAIRO_PATTERN_TYPE_SOLID) {
+ r->opacity = composite->mask_pattern.solid.color.alpha;
+ } else {
+ status = _cairo_gl_composite_set_mask (&r->setup,
+ &composite->mask_pattern.base,
+ &composite->mask_sample_area,
+ &composite->unbounded,
+ TRUE);
+ if (unlikely (status))
+ goto FAIL;
+ }
+
+ _cairo_gl_composite_set_spans (&r->setup);
+
+ status = _cairo_gl_composite_begin (&r->setup, &r->ctx);
+ if (unlikely (status))
+ goto FAIL;
+
+ r->emit = _cairo_gl_context_choose_emit_span (r->ctx);
+ if (composite->is_bounded) {
+ if (r->opacity == 1.)
+ r->base.render_rows = _cairo_gl_bounded_opaque_spans;
+ else
+ r->base.render_rows = _cairo_gl_bounded_spans;
+ r->base.finish = _cairo_gl_finish_bounded_spans;
+ } else {
+ if (needs_clip)
+ r->base.render_rows = _cairo_gl_clipped_spans;
+ else
+ r->base.render_rows = _cairo_gl_unbounded_spans;
+ r->base.finish = _cairo_gl_finish_unbounded_spans;
+ r->xmin = composite->unbounded.x;
+ r->xmax = composite->unbounded.x + composite->unbounded.width;
+ r->ymin = composite->unbounded.y;
+ r->ymax = composite->unbounded.y + composite->unbounded.height;
+ }
+
+ return CAIRO_STATUS_SUCCESS;
+
+FAIL:
+ return status;
+}
+
+static void
+_cairo_gl_span_renderer_fini (cairo_abstract_span_renderer_t *_r,
+ cairo_int_status_t status)
+{
+ cairo_gl_span_renderer_t *r = (cairo_gl_span_renderer_t *) _r;
+
+ if (status == CAIRO_INT_STATUS_UNSUPPORTED)
+ return;
+
+ if (status == CAIRO_INT_STATUS_SUCCESS)
+ r->base.finish (r);
+
+ _cairo_gl_composite_fini (&r->setup);
+}
+
+const cairo_compositor_t *
+_cairo_gl_span_compositor_get (void)
+{
+ static cairo_atomic_once_t once = CAIRO_ATOMIC_ONCE_INIT;
+ static cairo_spans_compositor_t spans;
+ static cairo_compositor_t shape;
+
+ if (_cairo_atomic_init_once_enter(&once)) {
+ /* The fallback to traps here is essentially just for glyphs... */
+ _cairo_shape_mask_compositor_init (&shape,
+ _cairo_gl_traps_compositor_get());
+ shape.glyphs = NULL;
+
+ _cairo_spans_compositor_init (&spans, &shape);
+ spans.fill_boxes = fill_boxes;
+ spans.draw_image_boxes = draw_image_boxes;
+ spans.copy_boxes = copy_boxes;
+ //spans.check_composite_boxes = check_composite_boxes;
+ spans.pattern_to_surface = _cairo_gl_pattern_to_source;
+ spans.composite_boxes = composite_boxes;
+ //spans.check_span_renderer = check_span_renderer;
+ spans.renderer_init = _cairo_gl_span_renderer_init;
+ spans.renderer_fini = _cairo_gl_span_renderer_fini;
+
+ _cairo_atomic_init_once_leave(&once);
+ }
+
+ return &spans.base;
+}
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-01 07:35:48 +0000