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/* cairo - a vector graphics library with display and print output
* 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.og/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.
* Contributor(s):
* Robert Bragg <>
#include "cairo-device-private.h"
#include "cairo-cache-private.h"
#include "cairo-backend-private.h"
#include "cairo-default-context-private.h"
#include "cairo-surface-private.h"
#include <cogl/cogl2-experimental.h>
typedef enum _cairo_cogl_template_type {
} cairo_cogl_template_type;
typedef struct _cairo_cogl_device {
cairo_device_t base;
cairo_bool_t backend_vtable_initialized;
cairo_backend_t backend;
/* We save a copy of all the original backend methods that we override so
* we can chain up...
cairo_backend_t backend_parent;
CoglContext *cogl_context;
CoglTexture *dummy_texture;
/* This is a sparsely filled set of templates because we don't support
* the full range of operators that cairo has. All entries corresponding
* to unsupported operators are NULL.
* The CAIRO_OPERATOR_ADD is the operator enum with the highest value that
* we support so we at least cap the size of the array by that.
* For each operator we have a template for when we have a solid source
* and another for each texture format that could be used as a source.
CoglPipeline *template_pipelines[CAIRO_OPERATOR_ADD + 1][CAIRO_COGL_TEMPLATE_TYPE_COUNT];
CoglMatrix identity;
/* Caches 1d linear gradient textures */
cairo_cache_t linear_cache;
cairo_cache_t path_fill_staging_cache;
cairo_cache_t path_fill_prim_cache;
cairo_cache_t path_stroke_staging_cache;
cairo_cache_t path_stroke_prim_cache;
} cairo_cogl_device_t;
typedef struct _cairo_cogl_clip_primitives {
cairo_t *clip;
CoglPrimitive **primitives;
} cairo_cogl_clip_primitives_t;
typedef struct _cairo_cogl_surface {
cairo_surface_t base;
CoglPixelFormat cogl_format;
cairo_bool_t ignore_alpha;
/* We currently have 3 basic kinds of Cogl surfaces:
* 1) A light surface simply wrapping a CoglTexture
* 2) A CoglOffscreen framebuffer that implicitly also wraps a CoglTexture
* 3) A CoglOnscreen framebuffer which could potentially be mapped to
* a CoglTexture (e.g. via tfp on X11) but we don't currently do
* that.
CoglTexture *texture;
CoglFramebuffer *framebuffer;
int width;
int height;
GQueue *journal;
CoglAttributeBuffer *buffer_stack;
size_t buffer_stack_size;
size_t buffer_stack_offset;
guint8 *buffer_stack_pointer;
cairo_clip_t *last_clip;
/* A small fifo of recently used cairo_clip_ts paired with CoglPrimitives
* that can be used to mask the stencil buffer. */
GList *clips_fifo;
int n_clip_updates_per_frame;
/* Since the surface backend drawing operator functions don't get
* passed the current cairo_t context we don't have a good way
* to get our user-coordinates path into our surface_fill function.
* For now we use our _cairo_cogl_context_fill() wrapper to set this
* side band data on the surface...
cairo_path_fixed_t *user_path;
cairo_matrix_t *ctm;
cairo_matrix_t *ctm_inverse;
cairo_bool_t path_is_rectangle;
double path_rectangle_x;
double path_rectangle_y;
double path_rectangle_width;
double path_rectangle_height;
} cairo_cogl_surface_t;
_cairo_cogl_path_fixed_rectangle (cairo_path_fixed_t *path,
cairo_fixed_t x,
cairo_fixed_t y,
cairo_fixed_t width,
cairo_fixed_t height);
_cairo_cogl_surface_fill_rectangle (void *abstract_surface,
cairo_operator_t op,
const cairo_pattern_t *source,
double x,
double y,
double width,
double height,
cairo_matrix_t *ctm,
const cairo_clip_t *clip);