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cairo/src/cairo-directfb-surface.c
Chris Wilson 1db8949f2b Ensure that the scaled font is frozen for the lifetime of the scaled glyph. 
After discussing the scaled font locking with Behdad, it transpired that it
is not sufficient for a font to be locked for the lifetime of a scaled glyph,
but that the scaled font's glyph cache must be frozen for the glyph'
lifetime.  If the cache is not frozen, then there is a possibility that the
glyph may be evicted before the reference goes out of scope i.e. the glyph
becomes invalid whilst we are trying to use it.

Since the freezing of the cache is the stronger barrier, we remove the
locking/unlocking of the mutex from the backends and instead move the
mutex acquisition into the freeze/thaw routines. Then update the rule on
acquiring glyphs to enforce that the cache is frozen and review the usage
of freeze/thaw by all the backends to ensure that the cache is frozen for
the lifetime of the glyph.
2008-10-22 00:53:55 +01:00

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/* cairo - a vector graphics library with display and print output
*
* Copyright © 2003 University of Southern California
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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):
* Michael Emmel <mike.emmel@gmail.com>
* Claudio Ciccani <klan@users.sf.net>
*/
#include "cairoint.h"
#include "cairo-directfb.h"
#include <directfb.h>
#include <direct/types.h>
#include <direct/debug.h>
#include <direct/memcpy.h>
#include <direct/util.h>
#include "cairo-clip-private.h"
/*
* Rectangle works fine.
* Bugs 361377, 359553, 359243 in Gnome BTS are caused
* by GDK/DirectFB, not by Cairo/DirectFB.
*/
#define DFB_RECTANGLES 1
/*
* Composite works fine.
*/
#define DFB_COMPOSITE 1
/*
* CompositeTrapezoids works (without antialiasing).
*/
#define DFB_COMPOSITE_TRAPEZOIDS 1
/*
* ShowGlyphs works fine.
*/
#define DFB_SHOW_GLYPHS 1
D_DEBUG_DOMAIN (CairoDFB_Acquire, "CairoDFB/Acquire", "Cairo DirectFB Acquire");
D_DEBUG_DOMAIN (CairoDFB_Clip, "CairoDFB/Clip", "Cairo DirectFB Clipping");
D_DEBUG_DOMAIN (CairoDFB_Font, "CairoDFB/Font", "Cairo DirectFB Font Rendering");
D_DEBUG_DOMAIN (CairoDFB_Render, "CairoDFB/Render", "Cairo DirectFB Rendering");
D_DEBUG_DOMAIN (CairoDFB_Surface, "CairoDFB/Surface", "Cairo DirectFB Surface");
/*****************************************************************************/
typedef struct _cairo_directfb_surface {
cairo_surface_t base;
cairo_format_t format;
cairo_content_t content;
IDirectFB *dfb;
IDirectFBSurface *dfbsurface;
IDirectFBSurface *tmpsurface;
cairo_bool_t has_clip;
DFBRegion *clips;
int n_clips;
int width;
int height;
unsigned local : 1;
unsigned blit_premultiplied : 1;
} cairo_directfb_surface_t;
typedef struct _cairo_directfb_font_cache {
IDirectFB *dfb;
IDirectFBSurface *dfbsurface;
int width;
int height;
/* coordinates within the surface
* of the last loaded glyph */
int x;
int y;
} cairo_directfb_font_cache_t;
static cairo_surface_backend_t _cairo_directfb_surface_backend;
/*****************************************************************************/
static int _directfb_argb_font = 0;
/*****************************************************************************/
#define RUN_CLIPPED(surface, clip, func) {\
if ((surface)->has_clip) {\
int k;\
for (k = 0; k < (surface)->n_clips; k++) {\
if (clip) {\
DFBRegion reg = (surface)->clips[k];\
DFBRegion *cli = (clip);\
if (reg.x2 < cli->x1 || reg.y2 < cli->y1 ||\
reg.x1 > cli->x2 || reg.y1 > cli->y2)\
continue;\
if (reg.x1 < cli->x1)\
reg.x1 = cli->x1;\
if (reg.y1 < cli->y1)\
reg.y1 = cli->y1;\
if (reg.x2 > cli->x2)\
reg.x2 = cli->x2;\
if (reg.y2 > cli->y2)\
reg.y2 = cli->y2;\
(surface)->dfbsurface->SetClip ((surface)->dfbsurface, &reg);\
} else {\
(surface)->dfbsurface->SetClip ((surface)->dfbsurface,\
&(surface)->clips[k]);\
}\
func;\
}\
} else {\
(surface)->dfbsurface->SetClip ((surface)->dfbsurface, clip);\
func;\
}\
}
#define TRANSFORM_POINT2X(m, x, y, ret_x, ret_y) {\
double _x = (x);\
double _y = (y);\
(ret_x) = (_x * (m).xx + (m).x0);\
(ret_y) = (_y * (m).yy + (m).y0);\
}
#define TRANSFORM_POINT3X(m, x, y, ret_x, ret_y) {\
double _x = (x);\
double _y = (y);\
(ret_x) = (_x * (m).xx + _y * (m).xy + (m).x0);\
(ret_y) = (_x * (m).yx + _y * (m).yy + (m).y0);\
}
/* XXX: A1 has a different bits ordering in cairo.
* Probably we should drop it.
*/
static cairo_content_t
_directfb_format_to_content (DFBSurfacePixelFormat format)
{
if (DFB_PIXELFORMAT_HAS_ALPHA (format)) {
if (DFB_COLOR_BITS_PER_PIXEL (format))
return CAIRO_CONTENT_COLOR_ALPHA;
return CAIRO_CONTENT_ALPHA;
}
return CAIRO_CONTENT_COLOR;
}
static inline DFBSurfacePixelFormat
_cairo_to_directfb_format (cairo_format_t format)
{
switch (format) {
case CAIRO_FORMAT_RGB24:
return DSPF_RGB32;
case CAIRO_FORMAT_ARGB32:
return DSPF_ARGB;
case CAIRO_FORMAT_A8:
return DSPF_A8;
case CAIRO_FORMAT_A1:
return DSPF_A1;
default:
break;
}
return -1;
}
static inline cairo_format_t
_directfb_to_cairo_format (DFBSurfacePixelFormat format)
{
switch (format) {
case DSPF_RGB32:
return CAIRO_FORMAT_RGB24;
case DSPF_ARGB:
return CAIRO_FORMAT_ARGB32;
case DSPF_A8:
return CAIRO_FORMAT_A8;
case DSPF_A1:
return CAIRO_FORMAT_A1;
default:
break;
}
return -1;
}
static cairo_bool_t
_directfb_get_operator (cairo_operator_t operator,
DFBSurfaceBlendFunction *ret_srcblend,
DFBSurfaceBlendFunction *ret_dstblend)
{
DFBSurfaceBlendFunction srcblend = DSBF_ONE;
DFBSurfaceBlendFunction dstblend = DSBF_ZERO;
switch (operator) {
case CAIRO_OPERATOR_CLEAR:
srcblend = DSBF_ZERO;
dstblend = DSBF_ZERO;
break;
case CAIRO_OPERATOR_SOURCE:
srcblend = DSBF_ONE;
dstblend = DSBF_ZERO;
break;
case CAIRO_OPERATOR_OVER:
srcblend = DSBF_ONE;
dstblend = DSBF_INVSRCALPHA;
break;
case CAIRO_OPERATOR_IN:
srcblend = DSBF_DESTALPHA;
dstblend = DSBF_ZERO;
break;
case CAIRO_OPERATOR_OUT:
srcblend = DSBF_INVDESTALPHA;
dstblend = DSBF_ZERO;
break;
case CAIRO_OPERATOR_ATOP:
srcblend = DSBF_DESTALPHA;
dstblend = DSBF_INVSRCALPHA;
break;
case CAIRO_OPERATOR_DEST:
srcblend = DSBF_ZERO;
dstblend = DSBF_ONE;
break;
case CAIRO_OPERATOR_DEST_OVER:
srcblend = DSBF_INVDESTALPHA;
dstblend = DSBF_ONE;
break;
case CAIRO_OPERATOR_DEST_IN:
srcblend = DSBF_ZERO;
dstblend = DSBF_SRCALPHA;
break;
case CAIRO_OPERATOR_DEST_OUT:
srcblend = DSBF_ZERO;
dstblend = DSBF_INVSRCALPHA;
break;
case CAIRO_OPERATOR_DEST_ATOP:
srcblend = DSBF_INVDESTALPHA;
dstblend = DSBF_SRCALPHA;
break;
case CAIRO_OPERATOR_XOR:
srcblend = DSBF_INVDESTALPHA;
dstblend = DSBF_INVSRCALPHA;
break;
case CAIRO_OPERATOR_ADD:
srcblend = DSBF_ONE;
dstblend = DSBF_ONE;
break;
case CAIRO_OPERATOR_SATURATE:
/* XXX This does not work. */
#if 0
srcblend = DSBF_SRCALPHASAT;
dstblend = DSBF_ONE;
break;
#endif
default:
return FALSE;
}
*ret_srcblend = srcblend;
*ret_dstblend = dstblend;
return TRUE;
}
static cairo_status_t
_directfb_buffer_surface_create (IDirectFB *dfb,
DFBSurfacePixelFormat format,
int width,
int height,
IDirectFBSurface **out)
{
IDirectFBSurface *buffer;
DFBSurfaceDescription dsc;
DFBResult ret;
dsc.flags = DSDESC_WIDTH | DSDESC_HEIGHT | DSDESC_PIXELFORMAT;
dsc.caps = DSCAPS_PREMULTIPLIED;
dsc.width = width;
dsc.height = height;
dsc.pixelformat = format;
ret = dfb->CreateSurface (dfb, &dsc, &buffer);
if (ret) {
DirectFBError ("IDirectFB::CreateSurface()", ret);
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
*out = buffer;
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_directfb_acquire_surface (cairo_directfb_surface_t *surface,
cairo_rectangle_int_t *intrest_rec,
cairo_image_surface_t **image_out,
cairo_rectangle_int_t *image_rect_out,
void **image_extra,
DFBSurfaceLockFlags lock_flags)
{
IDirectFBSurface *buffer = NULL;
DFBRectangle source_rect;
cairo_surface_t *image;
cairo_format_t cairo_format;
cairo_status_t status;
void *data;
int pitch;
if (surface->format == (cairo_format_t) -1 ||
(lock_flags & DSLF_WRITE && surface->has_clip))
{
DFBSurfaceCapabilities caps;
if (intrest_rec) {
source_rect.x = intrest_rec->x;
source_rect.y = intrest_rec->y;
source_rect.w = intrest_rec->width;
source_rect.h = intrest_rec->height;
} else {
source_rect.x = 0;
source_rect.y = 0;
surface->dfbsurface->GetSize (surface->dfbsurface,
&source_rect.w, &source_rect.h);
}
if (surface->tmpsurface) {
int w, h;
surface->tmpsurface->GetSize (surface->tmpsurface, &w, &h);
if (w < source_rect.w || h < source_rect.h) {
surface->tmpsurface->Release (surface->tmpsurface);
surface->tmpsurface = NULL;
}
}
cairo_format = _cairo_format_from_content (surface->content);
if (!surface->tmpsurface) {
D_DEBUG_AT (CairoDFB_Acquire, "Allocating buffer for surface %p.\n", surface);
status =
_directfb_buffer_surface_create (surface->dfb,
_cairo_to_directfb_format (cairo_format),
source_rect.w, source_rect.h,
&surface->tmpsurface);
if (status)
goto ERROR;
}
buffer = surface->tmpsurface;
/* surface->dfbsurface->GetCapabilities (surface->dfbsurface, &caps);
if (caps & DSCAPS_FLIPPING) {
DFBRegion region = { .x1 = source_rect.x, .y1 = source_rect.y,
.x2 = source_rect.x + source_rect.w - 1,
.y2 = source_rect.y + source_rect.h - 1 };
surface->dfbsurface->Flip (surface->dfbsurface, &region, DSFLIP_BLIT);
} */
buffer->Blit (buffer, surface->dfbsurface, &source_rect, 0, 0);
} else {
/*might be a subsurface get the offset*/
surface->dfbsurface->GetVisibleRectangle (surface->dfbsurface, &source_rect);
cairo_format = surface->format;
buffer = surface->dfbsurface;
}
if (buffer->Lock (buffer, lock_flags, &data, &pitch)) {
D_DEBUG_AT (CairoDFB_Acquire, "Couldn't lock surface!\n");
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto ERROR;
}
image = cairo_image_surface_create_for_data (data, cairo_format,
source_rect.w, source_rect.h,
pitch);
status = image->status;
if (status)
goto ERROR;
if (image_rect_out) {
image_rect_out->x = source_rect.x;
image_rect_out->y = source_rect.y;
image_rect_out->width = source_rect.w;
image_rect_out->height = source_rect.h;
} else {
/* lock for read */
/* might be a subsurface */
if (buffer == surface->dfbsurface) {
cairo_surface_set_device_offset (image,
source_rect.x, source_rect.y);
}
}
*image_extra = buffer;
*image_out = (cairo_image_surface_t *) image;
return CAIRO_STATUS_SUCCESS;
ERROR:
if (buffer) {
buffer->Unlock (buffer);
if (buffer != surface->dfbsurface)
buffer->Release (buffer);
}
return status;
}
static cairo_surface_t *
_cairo_directfb_surface_create_similar (void *abstract_src,
cairo_content_t content,
int width,
int height)
{
cairo_directfb_surface_t *source = abstract_src;
cairo_directfb_surface_t *surface;
cairo_format_t format;
cairo_status_t status;
D_DEBUG_AT (CairoDFB_Surface,
"%s( src=%p, content=0x%x, width=%d, height=%d).\n",
__FUNCTION__, source, content, width, height);
width = (width <= 0) ? 1 : width;
height = (height<= 0) ? 1 : height;
format = _cairo_format_from_content (content);
surface = calloc (1, sizeof (cairo_directfb_surface_t));
if (surface == NULL)
return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
surface->dfb = source->dfb;
if (width < 8 || height < 8) {
IDirectFBSurface *tmp;
DFBRectangle rect = { .x=0, .y=0, .w=width, .h=height };
/* Some cards (e.g. Matrox) don't support surfaces smaller than 8x8 */
status = _directfb_buffer_surface_create (surface->dfb,
_cairo_to_directfb_format (format),
MAX (width, 8), MAX (height, 8),
&tmp);
if (status) {
free (surface);
return _cairo_surface_create_in_error (status);
}
tmp->GetSubSurface (tmp, &rect, &surface->dfbsurface);
tmp->Release (tmp);
} else {
status =
_directfb_buffer_surface_create (surface->dfb,
_cairo_to_directfb_format (format),
width, height,
&surface->dfbsurface);
if (status) {
free (surface);
return _cairo_surface_create_in_error (status);
}
}
_cairo_surface_init (&surface->base,
&_cairo_directfb_surface_backend,
content);
surface->format = format;
surface->content = content;
surface->width = width;
surface->height = height;
surface->local = TRUE;
surface->blit_premultiplied = TRUE;
return &surface->base;
}
static cairo_status_t
_cairo_directfb_surface_finish (void *data)
{
cairo_directfb_surface_t *surface = (cairo_directfb_surface_t *)data;
D_DEBUG_AT (CairoDFB_Surface, "%s( surface=%p ).\n", __FUNCTION__, surface);
if (surface->clips) {
free (surface->clips);
surface->clips = NULL;
surface->n_clips = 0;
}
if (surface->tmpsurface) {
surface->tmpsurface->Release (surface->tmpsurface);
surface->tmpsurface = NULL;
}
if (surface->dfbsurface) {
surface->dfbsurface->Release (surface->dfbsurface);
surface->dfbsurface = NULL;
}
if (surface->dfb)
surface->dfb = NULL;
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_directfb_surface_acquire_source_image (void *abstract_surface,
cairo_image_surface_t **image_out,
void **image_extra)
{
cairo_directfb_surface_t *surface = abstract_surface;
D_DEBUG_AT (CairoDFB_Acquire,
"%s( surface=%p ).\n", __FUNCTION__, surface);
return _directfb_acquire_surface (surface, NULL, image_out,
NULL, image_extra, DSLF_READ);
}
static void
_cairo_directfb_surface_release_source_image (void *abstract_surface,
cairo_image_surface_t *image,
void *image_extra)
{
IDirectFBSurface *buffer = image_extra;
D_DEBUG_AT (CairoDFB_Acquire,
"%s( surface=%p ).\n", __FUNCTION__, surface);
buffer->Unlock (buffer);
cairo_surface_destroy (&image->base);
}
static cairo_status_t
_cairo_directfb_surface_acquire_dest_image (void *abstract_surface,
cairo_rectangle_int_t *interest_rect,
cairo_image_surface_t **image_out,
cairo_rectangle_int_t *image_rect_out,
void **image_extra)
{
cairo_directfb_surface_t *surface = abstract_surface;
D_DEBUG_AT (CairoDFB_Acquire,
"%s( surface=%p (%dx%d), interest_rect={ %u %u %u %u } ).\n",
__FUNCTION__, surface, surface->width, surface->height,
interest_rect ? interest_rect->x : 0,
interest_rect ? interest_rect->y : 0,
interest_rect ? interest_rect->width : (unsigned) surface->width,
interest_rect ? interest_rect->height : (unsigned) surface->height);
return _directfb_acquire_surface (surface, interest_rect, image_out,
image_rect_out, image_extra,
DSLF_READ | DSLF_WRITE);
}
static void
_cairo_directfb_surface_release_dest_image (void *abstract_surface,
cairo_rectangle_int_t *interest_rect,
cairo_image_surface_t *image,
cairo_rectangle_int_t *image_rect,
void *image_extra)
{
cairo_directfb_surface_t *surface = abstract_surface;
IDirectFBSurface *buffer = image_extra;
D_DEBUG_AT (CairoDFB_Acquire,
"%s( surface=%p ).\n", __FUNCTION__, surface);
buffer->Unlock (buffer);
if (surface->dfbsurface != buffer) {
DFBRegion region = {
.x1 = interest_rect->x,
.y1 = interest_rect->y,
.x2 = interest_rect->x + interest_rect->width - 1,
.y2 = interest_rect->y + interest_rect->height - 1
};
surface->dfbsurface->SetBlittingFlags (surface->dfbsurface, DSBLIT_NOFX);
RUN_CLIPPED (surface, &region,
surface->dfbsurface->Blit (surface->dfbsurface,
buffer, NULL,
image_rect->x, image_rect->y));
}
cairo_surface_destroy (&image->base);
}
static cairo_status_t
_cairo_directfb_surface_clone_similar (void *abstract_surface,
cairo_surface_t *src,
int src_x,
int src_y,
int width,
int height,
int *clone_offset_x,
int *clone_offset_y,
cairo_surface_t **clone_out)
{
cairo_directfb_surface_t *surface = abstract_surface;
cairo_directfb_surface_t *clone;
D_DEBUG_AT (CairoDFB_Surface,
"%s( surface=%p, src=%p ).\n", __FUNCTION__, surface, src);
if (src->backend == surface->base.backend) {
*clone_offset_x = 0;
*clone_offset_y = 0;
*clone_out = cairo_surface_reference (src);
return CAIRO_STATUS_SUCCESS;
} else if (_cairo_surface_is_image (src)) {
cairo_image_surface_t *image_src = (cairo_image_surface_t *) src;
unsigned char *dst, *src = image_src->data;
int pitch;
int i, j;
DFBResult ret;
clone = (cairo_directfb_surface_t *)
_cairo_directfb_surface_create_similar (surface,
_cairo_content_from_format (image_src->format),
width, height);
if (clone == NULL)
return CAIRO_INT_STATUS_UNSUPPORTED;
if (clone->base.status)
return clone->base.status;
ret = clone->dfbsurface->Lock (clone->dfbsurface,
DSLF_WRITE, (void *)&dst, &pitch);
if (ret) {
DirectFBError ("IDirectFBSurface::Lock()", ret);
cairo_surface_destroy (&clone->base);
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
src += image_src->stride * src_y;
if (image_src->format == CAIRO_FORMAT_A1) {
/* A1 -> A8 */
dst -= src_x;
for (i = 0; i < height; i++) {
for (j = src_x; j < src_x + width; j++)
dst[j] = (src[j>>3] & (1 << (j&7))) ? 0xff : 0x00;
dst += pitch;
src += image_src->stride;
}
} else {
int len;
if (image_src->format == CAIRO_FORMAT_A8) {
src += src_x;
len = width;
} else {
src += src_x * 4;
len = width * 4;
}
for (i = 0; i < height; i++) {
direct_memcpy (dst, src, len);
dst += pitch;
src += image_src->stride;
}
}
clone->dfbsurface->Unlock (clone->dfbsurface);
*clone_offset_x = src_x;
*clone_offset_y = src_y;
*clone_out = &clone->base;
return CAIRO_STATUS_SUCCESS;
}
return CAIRO_INT_STATUS_UNSUPPORTED;
}
#if DFB_COMPOSITE || DFB_COMPOSITE_TRAPEZOIDS
static cairo_int_status_t
_directfb_prepare_composite (cairo_directfb_surface_t *dst,
cairo_pattern_t *src_pattern,
cairo_pattern_t *mask_pattern,
cairo_operator_t op,
int *src_x, int *src_y,
int *mask_x, int *mask_y,
unsigned int width,
unsigned int height,
cairo_directfb_surface_t **ret_src,
cairo_surface_attributes_t *ret_src_attr)
{
cairo_directfb_surface_t *src;
cairo_surface_attributes_t src_attr;
cairo_status_t status;
DFBSurfaceBlittingFlags flags;
DFBSurfaceBlendFunction sblend;
DFBSurfaceBlendFunction dblend;
const cairo_color_t *color;
/* XXX Unbounded operators are not handled correctly */
if (! _cairo_operator_bounded_by_source (op))
return CAIRO_INT_STATUS_UNSUPPORTED;
if (! _directfb_get_operator (op, &sblend, &dblend))
return CAIRO_INT_STATUS_UNSUPPORTED;
if (mask_pattern) {
cairo_solid_pattern_t *pattern;
return CAIRO_INT_STATUS_UNSUPPORTED;
if (mask_pattern->type != CAIRO_PATTERN_TYPE_SOLID) {
cairo_pattern_t *tmp;
int tmp_x, tmp_y;
if (src_pattern->type != CAIRO_PATTERN_TYPE_SOLID ||
sblend == DSBF_INVDESTALPHA) /* Doesn't work correctly */
return CAIRO_INT_STATUS_UNSUPPORTED;
D_DEBUG_AT (CairoDFB_Render, "Replacing src pattern by mask pattern.\n");
tmp = src_pattern;
tmp_x = *src_x; tmp_y = *src_y;
src_pattern = mask_pattern;
*src_x = *mask_x; *src_y = *mask_y;
mask_pattern = tmp;
*mask_x = tmp_x; *mask_y = tmp_y;
if (sblend == DSBF_ONE) {
sblend = DSBF_SRCALPHA;
/*dblend = DSBF_INVSRCALPHA;*/
}
}
color = &((cairo_solid_pattern_t *) mask_pattern)->color;
} else {
color = _cairo_stock_color (CAIRO_STOCK_WHITE);
}
/* XXX DirectFB currently does not support filtering, so force NEAREST
* in order to hit optimisations inside core.
*/
src_pattern->filter = CAIRO_FILTER_NEAREST;
status = _cairo_pattern_acquire_surface (src_pattern, &dst->base,
*src_x, *src_y, width, height,
(cairo_surface_t **) &src,
&src_attr);
if (status)
return status;
if (src->base.backend != &_cairo_directfb_surface_backend ||
src->dfb != dst->dfb)
{
_cairo_pattern_release_surface (src_pattern, &src->base, &src_attr);
return CAIRO_INT_STATUS_UNSUPPORTED;
}
if (src->content == CAIRO_CONTENT_COLOR) {
if (sblend == DSBF_SRCALPHA)
sblend = DSBF_ONE;
else if (sblend == DSBF_INVSRCALPHA)
sblend = DSBF_ZERO;
if (dblend == DSBF_SRCALPHA)
dblend = DSBF_ONE;
else if (dblend == DSBF_INVSRCALPHA)
dblend = DSBF_ZERO;
}
if (dst->content == CAIRO_CONTENT_COLOR) {
if (sblend == DSBF_DESTALPHA)
sblend = DSBF_ONE;
else if (sblend == DSBF_INVDESTALPHA)
sblend = DSBF_ZERO;
if (dblend == DSBF_DESTALPHA)
dblend = DSBF_ONE;
else if (dblend == DSBF_INVDESTALPHA)
dblend = DSBF_ZERO;
}
flags = (sblend == DSBF_ONE && dblend == DSBF_ZERO)
? DSBLIT_NOFX : DSBLIT_BLEND_ALPHACHANNEL;
if (! CAIRO_COLOR_IS_OPAQUE (color))
flags |= DSBLIT_BLEND_COLORALPHA;
if (! _cairo_color_equal (color, _cairo_stock_color (CAIRO_STOCK_WHITE)))
flags |= DSBLIT_COLORIZE;
dst->dfbsurface->SetBlittingFlags (dst->dfbsurface, flags);
if (flags & (DSBLIT_BLEND_ALPHACHANNEL | DSBLIT_BLEND_COLORALPHA)) {
dst->dfbsurface->SetSrcBlendFunction (dst->dfbsurface, sblend);
dst->dfbsurface->SetDstBlendFunction (dst->dfbsurface, dblend);
}
if (flags & (DSBLIT_BLEND_COLORALPHA | DSBLIT_COLORIZE)) {
if (dst->blit_premultiplied) {
dst->dfbsurface->SetColor (dst->dfbsurface,
color->red_short >> 8,
color->green_short >> 8,
color->blue_short >> 8,
color->alpha_short >> 8);
} else {
dst->dfbsurface->SetColor (dst->dfbsurface,
color->red * 0xff,
color->green * 0xff,
color->blue * 0xff,
color->alpha * 0xff);
}
}
*ret_src = src;
*ret_src_attr = src_attr;
return CAIRO_STATUS_SUCCESS;
}
static void
_directfb_finish_composite (cairo_directfb_surface_t *dst,
cairo_pattern_t *src_pattern,
cairo_surface_t *src,
cairo_surface_attributes_t *src_attr)
{
_cairo_pattern_release_surface (src_pattern, src, src_attr);
}
#endif /* DFB_COMPOSITE || DFB_COMPOSITE_TRAPEZOIDS */
#if DFB_COMPOSITE
static DFBAccelerationMask
_directfb_categorize_operation (cairo_surface_attributes_t *src_attr)
{
cairo_matrix_t *m = &src_attr->matrix;
if (m->xy != 0 || m->yx != 0 || m->xx < 0 || m->yy < 0) {
if (src_attr->extend != CAIRO_EXTEND_NONE)
return DFXL_NONE;
return DFXL_TEXTRIANGLES;
}
if (m->xx != 1 || m->yy != 1) {
if (src_attr->extend != CAIRO_EXTEND_NONE)
return DFXL_NONE;
return DFXL_STRETCHBLIT;
}
switch (src_attr->extend) {
case CAIRO_EXTEND_NONE:
case CAIRO_EXTEND_REPEAT:
if (_cairo_matrix_is_integer_translation (&src_attr->matrix,
NULL, NULL))
{
return DFXL_BLIT;
}
else
{
return DFXL_STRETCHBLIT;
}
default:
case CAIRO_EXTEND_REFLECT:
case CAIRO_EXTEND_PAD:
return DFXL_NONE;
}
}
static cairo_int_status_t
_cairo_directfb_surface_composite (cairo_operator_t op,
cairo_pattern_t *src_pattern,
cairo_pattern_t *mask_pattern,
void *abstract_dst,
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_directfb_surface_t *dst = abstract_dst;
cairo_directfb_surface_t *src;
cairo_surface_attributes_t src_attr;
cairo_bool_t is_integer_translation;
DFBAccelerationMask accel, mask;
cairo_int_status_t status;
int tx, ty;
D_DEBUG_AT (CairoDFB_Render,
"%s( op=%d, src_pattern=%p, mask_pattern=%p, dst=%p,"
" src_x=%d, src_y=%d, mask_x=%d, mask_y=%d, dst_x=%d,"
" dst_y=%d, width=%u, height=%u ).\n",
__FUNCTION__, op, src_pattern, mask_pattern, dst,
src_x, src_y, mask_x, mask_y, dst_x, dst_y, width, height);
status = _directfb_prepare_composite (dst, src_pattern, mask_pattern, op,
&src_x, &src_y, &mask_x, &mask_y,
width, height, &src, &src_attr);
if (status)
return status;
accel = _directfb_categorize_operation (&src_attr);
if (accel == DFXL_NONE) {
_directfb_finish_composite (dst, src_pattern, &src->base, &src_attr);
return CAIRO_INT_STATUS_UNSUPPORTED;
}
dst->dfbsurface->GetAccelerationMask (dst->dfbsurface,
src->dfbsurface,
&mask);
if ((mask & accel) == 0) {
D_DEBUG_AT (CairoDFB_Render, "No acceleration (%08x)!\n", accel);
if (accel != DFXL_BLIT) {
_directfb_finish_composite (dst, src_pattern, &src->base, &src_attr);
return CAIRO_INT_STATUS_UNSUPPORTED;
}
}
src_x += src_attr.x_offset;
src_y += src_attr.y_offset;
switch (accel) {
case DFXL_BLIT:
{
DFBRectangle sr;
is_integer_translation =
_cairo_matrix_is_integer_translation (&src_attr.matrix,
&tx, &ty);
assert (is_integer_translation);
sr.x = src_x + tx;
sr.y = src_y + ty;
sr.w = width;
sr.h = height;
if (src_attr.extend == CAIRO_EXTEND_NONE) {
D_DEBUG_AT (CairoDFB_Render, "Running Blit().\n");
RUN_CLIPPED (dst, NULL,
dst->dfbsurface->Blit (dst->dfbsurface,
src->dfbsurface,
&sr,
dst_x, dst_y));
} else if (src_attr.extend == CAIRO_EXTEND_REPEAT) {
DFBRegion clip;
clip.x1 = dst_x;
clip.y1 = dst_y;
clip.x2 = dst_x + width - 1;
clip.y2 = dst_y + height - 1;
D_DEBUG_AT (CairoDFB_Render, "Running TileBlit().\n");
RUN_CLIPPED (dst, &clip,
dst->dfbsurface->TileBlit (dst->dfbsurface,
src->dfbsurface,
&sr,
dst_x, dst_y));
}
break;
}
case DFXL_STRETCHBLIT:
{
DFBRectangle sr, dr;
double x1, y1, x2, y2;
TRANSFORM_POINT2X (src_attr.matrix,
src_x, src_y, x1, y1);
TRANSFORM_POINT2X (src_attr.matrix,
src_x+width, src_y+height, x2, y2);
sr.x = floor (x1);
sr.y = floor (y1);
sr.w = ceil (x2) - sr.x;
sr.h = ceil (y2) - sr.y;
dr.x = dst_x;
dr.y = dst_y;
dr.w = width;
dr.h = height;
D_DEBUG_AT (CairoDFB_Render, "Running StretchBlit().\n");
RUN_CLIPPED (dst, NULL,
dst->dfbsurface->StretchBlit (dst->dfbsurface,
src->dfbsurface, &sr, &dr));
break;
}
case DFXL_TEXTRIANGLES:
{
DFBRegion clip;
DFBVertex v[4];
float x1, y1, x2, y2;
int w, h;
status = cairo_matrix_invert (&src_attr.matrix);
/* guaranteed by cairo_pattern_set_matrix (); */
assert (status == CAIRO_STATUS_SUCCESS);
x1 = src_x;
y1 = src_y;
x2 = width + x1;
y2 = height + y1;
src->dfbsurface->GetSize (src->dfbsurface, &w, &h);
TRANSFORM_POINT3X (src_attr.matrix,
x1, y1, v[0].x, v[0].y);
v[0].z = 0;
v[0].w = 1;
v[0].s = x1 / w;
v[0].t = y1 / h;
TRANSFORM_POINT3X (src_attr.matrix,
x2, y1, v[1].x, v[1].y);
v[1].z = 0;
v[1].w = 1;
v[1].s = x2 / w;
v[1].t = y1 / h;
TRANSFORM_POINT3X (src_attr.matrix,
x2, y2, v[2].x, v[2].y);
v[2].z = 0;
v[2].w = 1;
v[2].s = x2 / w;
v[2].t = y2 / h;
TRANSFORM_POINT3X (src_attr.matrix,
x1, y2, v[3].x, v[3].y);
v[3].z = 0;
v[3].w = 1;
v[3].s = x1 / w;
v[3].t = y2 / h;
clip.x1 = dst_x;
clip.y1 = dst_y;
clip.x2 = dst_x + width - 1;
clip.y2 = dst_y + height - 1;
D_DEBUG_AT (CairoDFB_Render, "Running TextureTriangles().\n");
RUN_CLIPPED (dst, &clip,
dst->dfbsurface->TextureTriangles (dst->dfbsurface,
src->dfbsurface, v, NULL, 4, DTTF_FAN));
break;
}
default:
D_BUG ("Unexpected operation");
break;
}
_directfb_finish_composite (dst, src_pattern, &src->base, &src_attr);
return status;
}
#endif /* DFB_COMPOSITE */
#if DFB_RECTANGLES
static cairo_int_status_t
_cairo_directfb_surface_fill_rectangles (void *abstract_surface,
cairo_operator_t op,
const cairo_color_t *color,
cairo_rectangle_int_t *rects,
int n_rects)
{
cairo_directfb_surface_t *dst = abstract_surface;
DFBSurfaceDrawingFlags flags;
DFBSurfaceBlendFunction sblend;
DFBSurfaceBlendFunction dblend;
DFBRectangle r[n_rects];
int i;
D_DEBUG_AT (CairoDFB_Render,
"%s( dst=%p, op=%d, color=%p, rects=%p, n_rects=%d ).\n",
__FUNCTION__, dst, op, color, rects, n_rects);
if (! _cairo_operator_bounded_by_source (op))
return CAIRO_INT_STATUS_UNSUPPORTED;
if (! _directfb_get_operator (op, &sblend, &dblend))
return CAIRO_INT_STATUS_UNSUPPORTED;
if (CAIRO_COLOR_IS_OPAQUE (color)) {
if (sblend == DSBF_SRCALPHA)
sblend = DSBF_ONE;
else if (sblend == DSBF_INVSRCALPHA)
sblend = DSBF_ZERO;
if (dblend == DSBF_SRCALPHA)
dblend = DSBF_ONE;
else if (dblend == DSBF_INVSRCALPHA)
dblend = DSBF_ZERO;
}
if (dst->content == CAIRO_CONTENT_COLOR) {
if (sblend == DSBF_DESTALPHA)
sblend = DSBF_ONE;
else if (sblend == DSBF_INVDESTALPHA)
sblend = DSBF_ZERO;
if (dblend == DSBF_DESTALPHA)
dblend = DSBF_ONE;
else if (dblend == DSBF_INVDESTALPHA)
dblend = DSBF_ZERO;
}
flags = (sblend == DSBF_ONE && dblend == DSBF_ZERO) ? DSDRAW_NOFX : DSDRAW_BLEND;
dst->dfbsurface->SetDrawingFlags (dst->dfbsurface, flags);
if (flags & DSDRAW_BLEND) {
dst->dfbsurface->SetSrcBlendFunction (dst->dfbsurface, sblend);
dst->dfbsurface->SetDstBlendFunction (dst->dfbsurface, dblend);
}
dst->dfbsurface->SetColor (dst->dfbsurface,
color->red_short >> 8,
color->green_short >> 8,
color->blue_short >> 8,
color->alpha_short >> 8);
for (i = 0; i < n_rects; i++) {
r[i].x = rects[i].x;
r[i].y = rects[i].y;
r[i].w = rects[i].width;
r[i].h = rects[i].height;
}
RUN_CLIPPED (dst, NULL,
dst->dfbsurface->FillRectangles (dst->dfbsurface, r, n_rects));
return CAIRO_STATUS_SUCCESS;
}
#endif
#if DFB_COMPOSITE_TRAPEZOIDS
static cairo_int_status_t
_cairo_directfb_surface_composite_trapezoids (cairo_operator_t op,
cairo_pattern_t *pattern,
void *abstract_dst,
cairo_antialias_t antialias,
int src_x, int src_y,
int dst_x, int dst_y,
unsigned int width,
unsigned int height,
cairo_trapezoid_t *traps,
int num_traps)
{
cairo_directfb_surface_t *dst = abstract_dst;
cairo_directfb_surface_t *src;
cairo_surface_attributes_t src_attr;
cairo_status_t status;
DFBAccelerationMask accel;
D_DEBUG_AT (CairoDFB_Render,
"%s( op=%d, pattern=%p, dst=%p, antialias=%d,"
" src_x=%d, src_y=%d, dst_x=%d, dst_y=%d,"
" width=%u, height=%u, traps=%p, num_traps=%d ).\n",
__FUNCTION__, op, pattern, dst, antialias,
src_x, src_y, dst_x, dst_y, width, height, traps, num_traps);
if (antialias != CAIRO_ANTIALIAS_NONE)
return CAIRO_INT_STATUS_UNSUPPORTED;
/* Textures are not supported yet. */
if (pattern->type != CAIRO_PATTERN_TYPE_SOLID)
return CAIRO_INT_STATUS_UNSUPPORTED;
status = _directfb_prepare_composite (dst, pattern, NULL, op,
&src_x, &src_y, NULL, NULL,
width, height, &src, &src_attr);
if (status)
return status;
dst->dfbsurface->GetAccelerationMask (dst->dfbsurface,
src->dfbsurface,
&accel);
status = CAIRO_INT_STATUS_UNSUPPORTED;
if (accel & DFXL_TEXTRIANGLES) {
DFBVertex vertex[6*num_traps];
DFBVertex *v = &vertex[0];
int n = 0;
#define ADD_TRI_V(V, X, Y) do { \
(V)->x = (X); (V)->y = (Y); (V)->w = 1; (V)->z = (V)->s = (V)->t = 0; \
} while (0)
#define ADD_TRI(id, x1, y1, x2, y2, x3, y3) do {\
const int p = (id)*3;\
ADD_TRI_V (v+p+0, x1, y1); \
ADD_TRI_V (v+p+1, x2, y2); \
ADD_TRI_V (v+p+2, x3, y3); \
} while (0)
while (num_traps--) {
double lx1, ly1, lx2, ly2;
double rx1, ry1, rx2, ry2;
lx1 = _cairo_fixed_to_double (traps->left.p1.x);
ly1 = _cairo_fixed_to_double (traps->left.p1.y);
lx2 = _cairo_fixed_to_double (traps->left.p2.x);
ly2 = _cairo_fixed_to_double (traps->left.p2.y);
rx1 = _cairo_fixed_to_double (traps->right.p1.x);
ry1 = _cairo_fixed_to_double (traps->right.p1.y);
rx2 = _cairo_fixed_to_double (traps->right.p2.x);
ry2 = _cairo_fixed_to_double (traps->right.p2.y);
if (traps->left.p1.y < traps->top) {
double y = _cairo_fixed_to_double (traps->top);
if (lx2 != lx1)
lx1 = (y - ly1) * (lx2 - lx1) / (ly2 - ly1) + lx1;
ly1 = y;
}
if (traps->left.p2.y > traps->bottom) {
double y = _cairo_fixed_to_double (traps->bottom);
if (lx2 != lx1)
lx2 = (y - ly1) * (lx2 - lx1) / (ly2 - ly1) + lx1;
ly2 = y;
}
if (traps->right.p1.y < traps->top) {
double y = _cairo_fixed_to_double (traps->top);
if (rx2 != rx1)
rx1 = (y - ry1) * (rx2 - rx1) / (ry2 - ry1) + rx1;
ry1 = y;
}
if (traps->right.p2.y > traps->bottom) {
double y = _cairo_fixed_to_double (traps->bottom);
if (rx2 != rx1)
rx2 = (y - ry1) * (rx2 - rx1) / (ry2 - ry1) + rx1;
ry2 = y;
}
if (lx1 == rx1 && ly1 == ry1) {
ADD_TRI (0, lx2, ly2, lx1, ly1, rx2, ry2);
v += 3;
n += 3;
} else if (lx2 == rx2 && ly2 == ry2) {
ADD_TRI (0, lx1, ly1, lx2, ly2, rx1, ry1);
v += 3;
n += 3;
} else {
ADD_TRI (0, lx1, ly1, rx1, ry1, lx2, ly2);
ADD_TRI (1, lx2, ly2, rx1, ry1, rx2, ry2);
v += 6;
n += 6;
}
traps++;
}
#undef ADD_TRI
#undef ADD_TRI_V
D_DEBUG_AT (CairoDFB_Render, "Running TextureTriangles().\n");
RUN_CLIPPED (dst, NULL,
dst->dfbsurface->TextureTriangles (dst->dfbsurface,
src->dfbsurface,
vertex, NULL, n,
DTTF_LIST));
status = CAIRO_STATUS_SUCCESS;
}
_directfb_finish_composite (dst, pattern, &src->base, &src_attr);
return status;
}
#endif /* DFB_COMPOSITE_TRAPEZOIDS */
static cairo_int_status_t
_cairo_directfb_surface_set_clip_region (void *abstract_surface,
cairo_region_t *region)
{
cairo_directfb_surface_t *surface = abstract_surface;
D_DEBUG_AT (CairoDFB_Clip,
"%s( surface=%p, region=%p ).\n",
__FUNCTION__, surface, region);
if (region) {
cairo_box_int_t *boxes;
int n_boxes;
cairo_status_t status;
int i;
surface->has_clip = TRUE;
status = _cairo_region_get_boxes (region, &n_boxes, &boxes);
if (n_boxes == 0)
return CAIRO_STATUS_SUCCESS;
if (status)
return status;
if (surface->n_clips != n_boxes) {
if (surface->clips)
free (surface->clips);
surface->clips = _cairo_malloc_ab (n_boxes, sizeof (DFBRegion));
if (!surface->clips) {
surface->n_clips = 0;
_cairo_region_boxes_fini (region, boxes);
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
surface->n_clips = n_boxes;
}
for (i = 0; i < n_boxes; i++) {
surface->clips[i].x1 = boxes[i].p1.x;
surface->clips[i].y1 = boxes[i].p1.y;
surface->clips[i].x2 = boxes[i].p2.x - 1;
surface->clips[i].y2 = boxes[i].p2.y - 1;
}
_cairo_region_boxes_fini (region, boxes);
} else {
surface->has_clip = FALSE;
if (surface->clips) {
free (surface->clips);
surface->clips = NULL;
surface->n_clips = 0;
}
}
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
_cairo_directfb_abstract_surface_get_extents (void *abstract_surface,
cairo_rectangle_int_t *rectangle)
{
cairo_directfb_surface_t *surface = abstract_surface;
D_DEBUG_AT (CairoDFB_Surface,
"%s( surface=%p, rectangle=%p ).\n",
__FUNCTION__, surface, rectangle);
if (!surface->local) {
surface->dfbsurface->GetSize (surface->dfbsurface,
&surface->width, &surface->height);
}
rectangle->x = 0;
rectangle->y = 0;
rectangle->width = surface->width;
rectangle->height = surface->height;
return CAIRO_STATUS_SUCCESS;
}
#if DFB_SHOW_GLYPHS
static cairo_status_t
_directfb_allocate_font_cache (IDirectFB *dfb,
int width, int height,
cairo_directfb_font_cache_t **out)
{
cairo_directfb_font_cache_t *cache;
cairo_status_t status;
cache = calloc (1, sizeof (cairo_directfb_font_cache_t));
if (cache == NULL)
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
cache->dfb = dfb;
status = _directfb_buffer_surface_create (dfb,
_directfb_argb_font ? DSPF_ARGB : DSPF_A8,
width, height,
&cache->dfbsurface);
if (status) {
free (cache);
return status;
}
cache->width = width;
cache->height = height;
*out = cache;
return CAIRO_STATUS_SUCCESS;
}
static void
_directfb_destroy_font_cache (cairo_directfb_font_cache_t *cache)
{
cache->dfbsurface->Release (cache->dfbsurface);
free (cache);
}
static cairo_status_t
_directfb_acquire_font_cache (cairo_directfb_surface_t *surface,
cairo_scaled_font_t *scaled_font,
const cairo_glyph_t *glyphs,
int num_glyphs,
cairo_directfb_font_cache_t **ret_cache,
DFBRectangle *rects,
DFBPoint *points,
int *ret_num)
{
cairo_status_t status;
cairo_scaled_glyph_t *chars[num_glyphs];
int num_chars = 0;
cairo_directfb_font_cache_t *cache = NULL;
int n = 0;
int x = 0;
int y = 0;
int w = 8;
int h = 8;
int i;
D_DEBUG_AT (CairoDFB_Font, "%s( %p [%d] )\n", __FUNCTION__, glyphs, num_glyphs );
_cairo_cache_freeze (scaled_font->glyphs);
if (scaled_font->surface_private) {
cache = scaled_font->surface_private;
x = cache->x;
y = cache->y;
}
for (i = 0; i < num_glyphs; i++) {
cairo_scaled_glyph_t *scaled_glyph;
cairo_image_surface_t *img;
D_DEBUG_AT (CairoDFB_Font, " -> [%2d] = %4lu\n", i, glyphs[i].index );
status = _cairo_scaled_glyph_lookup (scaled_font, glyphs[i].index,
CAIRO_SCALED_GLYPH_INFO_SURFACE,
&scaled_glyph);
if (status) {
_cairo_cache_thaw (scaled_font->glyphs);
return status;
}
img = scaled_glyph->surface;
switch (img->format) {
case CAIRO_FORMAT_A1:
case CAIRO_FORMAT_A8:
case CAIRO_FORMAT_ARGB32:
break;
default:
D_DEBUG_AT (CairoDFB_Font,
" -> Unsupported font format %d!\n", img->format);
_cairo_cache_thaw (scaled_font->glyphs);
return CAIRO_INT_STATUS_UNSUPPORTED;
}
points[n].x = _cairo_lround (glyphs[i].x - img->base.device_transform.x0);
points[n].y = _cairo_lround (glyphs[i].y - img->base.device_transform.y0);
// D_DEBUG_AT (CairoDFB_Font, " (%4d,%4d) [%2d]\n", points[n].x, points[n].y, n );
if (points[n].x >= surface->width ||
points[n].y >= surface->height ||
points[n].x+img->width <= 0 ||
points[n].y+img->height <= 0)
{
continue;
}
if (scaled_glyph->surface_private == NULL) {
DFBRectangle *rect;
if (x+img->width > 2048) {
x = 0;
y = h;
h = 0;
}
rects[n].x = x;
rects[n].y = y;
rects[n].w = img->width;
rects[n].h = img->height;
x += img->width;
h = MAX (h, img->height);
w = MAX (w, x);
/* Remember glyph location */
rect = malloc (sizeof (DFBRectangle));
if (rect == NULL) {
_cairo_cache_thaw (scaled_font->glyphs);
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
*rect = rects[n];
scaled_glyph->surface_private = rect;
chars[num_chars++] = scaled_glyph;
D_DEBUG_AT (CairoDFB_Font, " -> loading at %4d,%2d <- rect %p, img %p, entry %p\n",
rects[n].x, rects[n].y, rect, scaled_glyph->surface, scaled_glyph);
} else {
rects[n] = *(DFBRectangle *) scaled_glyph->surface_private;
D_DEBUG_AT (CairoDFB_Font, " -> exists at %4d,%2d\n", rects[n].x, rects[n].y);
}
n++;
}
if (n == 0) {
_cairo_cache_thaw (scaled_font->glyphs);
return CAIRO_INT_STATUS_NOTHING_TO_DO;
}
h += y;
w = MAX (w, 8);
h = MAX (h, 8);
/* XXX query maximum surface size */
if (w > 2048 || h > 2048) {
_cairo_cache_thaw (scaled_font->glyphs);
return CAIRO_INT_STATUS_UNSUPPORTED;
}
if (cache) {
if (cache->width < w || cache->height < h) {
cairo_directfb_font_cache_t *new_cache;
w = MAX (w, cache->width);
h = MAX (h, cache->height);
D_DEBUG_AT (CairoDFB_Font, " -> Reallocating font cache (%dx%d).\n", w, h);
status = _directfb_allocate_font_cache (surface->dfb,
w, h,
&new_cache);
if (status) {
_cairo_cache_thaw (scaled_font->glyphs);
return status;
}
new_cache->dfbsurface->Blit (new_cache->dfbsurface,
cache->dfbsurface, NULL, 0, 0);
_directfb_destroy_font_cache (cache);
scaled_font->surface_private = cache = new_cache;
}
} else {
D_DEBUG_AT (CairoDFB_Font, " -> Allocating font cache (%dx%d).\n", w, h);
status = _directfb_allocate_font_cache (surface->dfb, w, h, &cache);
if (status) {
_cairo_cache_thaw (scaled_font->glyphs);
return status;
}
scaled_font->surface_backend = &_cairo_directfb_surface_backend;
scaled_font->surface_private = cache;
}
if (num_chars) {
unsigned char *data;
int pitch;
if (cache->dfbsurface->Lock (cache->dfbsurface,
DSLF_WRITE, (void *)&data, &pitch))
{
_cairo_cache_thaw (scaled_font->glyphs);
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
D_DEBUG_AT (CairoDFB_Font, " => %d chars to load, cache %dx%d\n", num_chars, cache->width, cache->height);
for (i = 0; i < num_chars; i++) {
cairo_image_surface_t *img = chars[i]->surface;
DFBRectangle *rect = chars[i]->surface_private;
unsigned char *dst = data;
unsigned char *src;
int j;
D_DEBUG_AT (CairoDFB_Font, " -> loading [%2d] <- rect %p, img %p, entry %p\n", i, rect, img, chars[i]);
src = img->data;
D_DEBUG_AT (CairoDFB_Font, " from %p\n", src);
dst += rect->y * pitch + (_directfb_argb_font ? (rect->x<<2) : rect->x);
D_DEBUG_AT (CairoDFB_Font, " to %4d,%2d (%p)\n", rect->x, rect->y, dst);
if (img->format == CAIRO_FORMAT_A1) {
for (h = rect->h; h; h--) {
if (_directfb_argb_font) {
for (j = 0; j < rect->w; j++)
((uint32_t *) dst)[j] = (src[j>>3] & (1 << (j&7))) ? 0xffffffff : 0;
} else {
for (j = 0; j < rect->w; j++)
dst[j] = (src[j>>3] & (1 << (j&7))) ? 0xff : 0;
}
dst += pitch;
src += img->stride;
}
} else if (img->format == CAIRO_FORMAT_A8) {
for (h = rect->h; h; h--) {
if (_directfb_argb_font) {
for (j = 0; j < rect->w; j++)
((uint32_t *) dst)[j] = src[j] * 0x01010101;
} else {
direct_memcpy (dst, src, rect->w);
}
dst += pitch;
src += img->stride;
}
} else { /* ARGB32 */
for (h = rect->h; h; h--) {
if (_directfb_argb_font) {
direct_memcpy (dst, src, rect->w<<2);
} else {
for (j = 0; j < rect->w; j++)
dst[j] = ((uint32_t *) src)[j] >> 24;
}
dst += pitch;
src += img->stride;
}
}
}
cache->dfbsurface->Unlock (cache->dfbsurface);
}
_cairo_cache_thaw (scaled_font->glyphs);
cache->x = x;
cache->y = y;
D_DEBUG_AT (CairoDFB_Font, " => cache %d,%d, %p [%d]\n", x, y, cache, n);
*ret_cache = cache;
*ret_num = n;
return CAIRO_STATUS_SUCCESS;
}
static void
_cairo_directfb_surface_scaled_font_fini (cairo_scaled_font_t *scaled_font)
{
cairo_directfb_font_cache_t *cache = scaled_font->surface_private;
D_DEBUG_AT (CairoDFB_Font,
"%s( scaled_font=%p ).\n", __FUNCTION__, scaled_font);
if (cache != NULL) {
_directfb_destroy_font_cache (cache);
scaled_font->surface_private = NULL;
}
}
static void
_cairo_directfb_surface_scaled_glyph_fini (cairo_scaled_glyph_t *scaled_glyph,
cairo_scaled_font_t *scaled_font)
{
D_DEBUG_AT (CairoDFB_Font,
"%s( scaled_glyph=%p, scaled_font=%p ).\n",
__FUNCTION__, scaled_glyph, scaled_font);
if (scaled_glyph->surface_private != NULL) {
free (scaled_glyph->surface_private);
scaled_glyph->surface_private = NULL;
}
}
static cairo_int_status_t
_cairo_directfb_surface_show_glyphs (void *abstract_dst,
cairo_operator_t op,
cairo_pattern_t *pattern,
cairo_glyph_t *glyphs,
int num_glyphs,
cairo_scaled_font_t *scaled_font,
int *remaining_glyphs)
{
cairo_directfb_surface_t *dst = abstract_dst;
cairo_directfb_font_cache_t *cache;
cairo_status_t status;
DFBSurfaceBlittingFlags flags;
DFBSurfaceBlendFunction sblend;
DFBSurfaceBlendFunction dblend;
DFBRectangle rects[num_glyphs];
DFBPoint points[num_glyphs];
int num;
const cairo_color_t *color;
D_DEBUG_AT (CairoDFB_Font,
"%s( dst=%p, op=%d, pattern=%p, glyphs=%p, num_glyphs=%d, scaled_font=%p ).\n",
__FUNCTION__, dst, op, pattern, glyphs, num_glyphs, scaled_font);
if (pattern->type != CAIRO_PATTERN_TYPE_SOLID)
return CAIRO_INT_STATUS_UNSUPPORTED;
/* Fallback if we need to emulate clip regions */
if (dst->base.clip &&
(dst->base.clip->mode != CAIRO_CLIP_MODE_REGION ||
dst->base.clip->surface != NULL))
{
return CAIRO_INT_STATUS_UNSUPPORTED;
}
/* XXX Unbounded operators are not handled correctly */
if (! _cairo_operator_bounded_by_mask (op))
return CAIRO_INT_STATUS_UNSUPPORTED;
if (! _cairo_operator_bounded_by_source (op))
return CAIRO_INT_STATUS_UNSUPPORTED;
if (! _directfb_get_operator (op, &sblend, &dblend) ||
sblend == DSBF_DESTALPHA || sblend == DSBF_INVDESTALPHA)
{
return CAIRO_INT_STATUS_UNSUPPORTED;
}
status = _directfb_acquire_font_cache (dst, scaled_font, glyphs, num_glyphs,
&cache, &rects[0], &points[0], &num);
if (status) {
if (status == CAIRO_INT_STATUS_NOTHING_TO_DO)
status = CAIRO_STATUS_SUCCESS;
return status;
}
color = &((cairo_solid_pattern_t *) pattern)->color;
flags = DSBLIT_BLEND_ALPHACHANNEL | DSBLIT_COLORIZE;
if (! CAIRO_COLOR_IS_OPAQUE (color))
flags |= DSBLIT_BLEND_COLORALPHA;
if (!_directfb_argb_font) {
if (sblend == DSBF_ONE) {
sblend = DSBF_SRCALPHA;
if (dblend == DSBF_ZERO)
dblend = DSBF_INVSRCALPHA;
}
}
dst->dfbsurface->SetBlittingFlags (dst->dfbsurface, flags);
dst->dfbsurface->SetSrcBlendFunction (dst->dfbsurface, sblend);
dst->dfbsurface->SetDstBlendFunction (dst->dfbsurface, dblend);
if (dst->blit_premultiplied) {
dst->dfbsurface->SetColor (dst->dfbsurface,
color->red_short >> 8,
color->green_short >> 8,
color->blue_short >> 8,
color->alpha_short >> 8);
} else {
dst->dfbsurface->SetColor (dst->dfbsurface,
color->red * 0xff,
color->green * 0xff,
color->blue * 0xff,
color->alpha * 0xff);
}
D_DEBUG_AT (CairoDFB_Font, "Running BatchBlit().\n");
RUN_CLIPPED (dst, NULL,
dst->dfbsurface->BatchBlit (dst->dfbsurface,
cache->dfbsurface, rects, points, num));
return CAIRO_STATUS_SUCCESS;
}
#endif /* DFB_SHOW_GLYPHS */
static cairo_bool_t
_cairo_directfb_surface_is_similar (void *surface_a, void *surface_b, cairo_content_t content)
{
cairo_directfb_surface_t *a = (cairo_directfb_surface_t *) surface_a;
cairo_directfb_surface_t *b = (cairo_directfb_surface_t *) surface_b;
return a->dfb == b->dfb;
}
static cairo_surface_backend_t
_cairo_directfb_surface_backend = {
CAIRO_SURFACE_TYPE_DIRECTFB, /*type*/
_cairo_directfb_surface_create_similar,/*create_similar*/
_cairo_directfb_surface_finish, /*finish*/
_cairo_directfb_surface_acquire_source_image,/*acquire_source_image*/
_cairo_directfb_surface_release_source_image,/*release_source_image*/
_cairo_directfb_surface_acquire_dest_image,/*acquire_dest_image*/
_cairo_directfb_surface_release_dest_image,/*release_dest_image*/
_cairo_directfb_surface_clone_similar,/*clone_similar*/
#if DFB_COMPOSITE
_cairo_directfb_surface_composite,/*composite*/
#else
NULL,/*composite*/
#endif
#if DFB_RECTANGLES
_cairo_directfb_surface_fill_rectangles,/*fill_rectangles*/
#else
NULL,/*fill_rectangles*/
#endif
#if DFB_COMPOSITE_TRAPEZOIDS
_cairo_directfb_surface_composite_trapezoids,/*composite_trapezoids*/
#else
NULL,/*composite_trapezoids*/
#endif
NULL, /* copy_page */
NULL, /* show_page */
_cairo_directfb_surface_set_clip_region,/* set_clip_region */
NULL, /* intersect_clip_path */
_cairo_directfb_abstract_surface_get_extents,/* get_extents */
NULL, /* old_show_glyphs */
NULL, /* get_font_options */
NULL, /* flush */
NULL, /* mark_dirty_rectangle */
#if DFB_SHOW_GLYPHS
_cairo_directfb_surface_scaled_font_fini,/* scaled_font_fini */
_cairo_directfb_surface_scaled_glyph_fini,/* scaled_glyph_fini */
#else
NULL,
NULL,
#endif
NULL, /* paint */
NULL, /* mask */
NULL, /* stroke */
NULL, /* fill */
#if DFB_SHOW_GLYPHS
_cairo_directfb_surface_show_glyphs,/* show_glyphs */
#else
NULL, /* show_glyphs */
#endif
NULL, /* snapshot */
_cairo_directfb_surface_is_similar,
NULL /* reset */
};
static void
cairo_directfb_surface_backend_init (IDirectFB *dfb)
{
static int done = 0;
if (done)
return;
if (getenv ("CAIRO_DIRECTFB_NO_ACCEL")) {
#if DFB_RECTANGLES
_cairo_directfb_surface_backend.fill_rectangles = NULL;
#endif
#if DFB_COMPOSITE
_cairo_directfb_surface_backend.composite = NULL;
#endif
#if DFB_COMPOSITE_TRAPEZOIDS
_cairo_directfb_surface_backend.composite_trapezoids = NULL;
#endif
#if DFB_SHOW_GLYPHS
_cairo_directfb_surface_backend.scaled_font_fini = NULL;
_cairo_directfb_surface_backend.scaled_glyph_fini = NULL;
_cairo_directfb_surface_backend.show_glyphs = NULL;
#endif
D_DEBUG_AT (CairoDFB_Surface, "Acceleration disabled.\n");
} else {
DFBGraphicsDeviceDescription dsc;
dfb->GetDeviceDescription (dfb, &dsc);
#if DFB_COMPOSITE
// if (!(dsc.acceleration_mask & DFXL_BLIT))
// _cairo_directfb_surface_backend.composite = NULL;
#endif
#if DFB_COMPOSITE_TRAPEZOIDS
// if (!(dsc.acceleration_mask & DFXL_TEXTRIANGLES))
// _cairo_directfb_surface_backend.composite_trapezoids = NULL;
#endif
}
if (getenv ("CAIRO_DIRECTFB_ARGB_FONT")) {
_directfb_argb_font = 1;
D_DEBUG_AT (CairoDFB_Surface, "Using ARGB fonts.\n");
}
done = 1;
}
cairo_surface_t *
cairo_directfb_surface_create (IDirectFB *dfb, IDirectFBSurface *dfbsurface)
{
cairo_directfb_surface_t *surface;
DFBSurfacePixelFormat format;
DFBSurfaceCapabilities caps;
D_ASSERT (dfb != NULL);
D_ASSERT (dfbsurface != NULL);
cairo_directfb_surface_backend_init (dfb);
surface = calloc (1, sizeof (cairo_directfb_surface_t));
if (surface == NULL)
return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
dfbsurface->AddRef (dfbsurface);
dfbsurface->GetPixelFormat (dfbsurface, &format);
dfbsurface->GetSize (dfbsurface, &surface->width, &surface->height);
surface->dfb = dfb;
surface->dfbsurface = dfbsurface;
surface->format = _directfb_to_cairo_format (format);
surface->content = _directfb_format_to_content (format);
dfbsurface->GetCapabilities (dfbsurface, &caps);
if (caps & DSCAPS_PREMULTIPLIED)
surface->blit_premultiplied = TRUE;
_cairo_surface_init (&surface->base,
&_cairo_directfb_surface_backend,
surface->content);
return &surface->base;
}
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