cairo_status_t
_cairo_path_fixed_init_copy (cairo_path_fixed_t *path,
cairo_path_fixed_t *other)
{
cairo_path_buf_t *buf, *other_buf;
_cairo_path_fixed_init (path);
path->current_point = other->current_point;
path->has_current_point = other->has_current_point;
path->has_curve_to = other->has_curve_to;
path->last_move_point = other->last_move_point;
path->buf_head->num_ops = other->buf_head->num_ops;
path->buf_head->num_points = other->buf_head->num_points;
memcpy (path->buf_head->op, other->buf_head->op,
other->buf_head->num_ops * sizeof (other->buf_head->op[0]));
memcpy (path->buf_head->points, other->buf_head->points,
other->buf_head->num_points * sizeof (other->buf_head->points[0]));
for (other_buf = other->buf_head->next;
other_buf;
other_buf = other_buf->next)
{
buf = _cairo_path_buf_create ();
if (buf == NULL) {
_cairo_path_fixed_fini (path);
return CAIRO_STATUS_NO_MEMORY;
}
memcpy (buf, other_buf, sizeof (cairo_path_buf_t));
_cairo_path_fixed_add_buf (path, buf);
}
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_surface_clipper_intersect_clip_boxes (cairo_surface_clipper_t *clipper,
const cairo_clip_t *clip)
{
cairo_path_fixed_t path;
cairo_status_t status;
int i;
if (clip->num_boxes == 0)
return CAIRO_STATUS_SUCCESS;
/* Reconstruct the path for the clip boxes.
* XXX maybe a new clipper callback?
*/
_cairo_path_fixed_init (&path);
for (i = 0; i < clip->num_boxes; i++) {
status = _cairo_path_fixed_add_box (&path, &clip->boxes[i]);
if (unlikely (status)) {
_cairo_path_fixed_fini (&path);
return status;
}
}
status = clipper->intersect_clip_path (clipper, &path,
CAIRO_FILL_RULE_WINDING,
0.,
CAIRO_ANTIALIAS_DEFAULT);
_cairo_path_fixed_fini (&path);
return status;
}
cairo_status_t
_cairo_path_fixed_init_copy (cairo_path_fixed_t *path,
cairo_path_fixed_t *other)
{
cairo_path_buf_t *buf, *other_buf;
unsigned int num_points, num_ops, buf_size;
_cairo_path_fixed_init (path);
path->current_point = other->current_point;
path->has_current_point = other->has_current_point;
path->has_curve_to = other->has_curve_to;
path->last_move_point = other->last_move_point;
path->buf_head.base.num_ops = other->buf_head.base.num_ops;
path->buf_head.base.num_points = other->buf_head.base.num_points;
path->buf_head.base.buf_size = other->buf_head.base.buf_size;
memcpy (path->buf_head.op, other->buf_head.base.op,
other->buf_head.base.num_ops * sizeof (other->buf_head.op[0]));
memcpy (path->buf_head.points, other->buf_head.points,
other->buf_head.base.num_points * sizeof (other->buf_head.points[0]));
num_points = num_ops = 0;
for (other_buf = other->buf_head.base.next;
other_buf != NULL;
other_buf = other_buf->next)
{
num_ops += other_buf->num_ops;
num_points += other_buf->num_points;
}
buf_size = MAX (num_ops, (num_points + 1) / 2);
if (buf_size) {
buf = _cairo_path_buf_create (buf_size);
if (buf == NULL) {
_cairo_path_fixed_fini (path);
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
for (other_buf = other->buf_head.base.next;
other_buf != NULL;
other_buf = other_buf->next)
{
memcpy (buf->op + buf->num_ops, other_buf->op,
other_buf->num_ops * sizeof (buf->op[0]));
buf->num_ops += other_buf->num_ops;
memcpy (buf->points + buf->num_points, other_buf->points,
other_buf->num_points * sizeof (buf->points[0]));
buf->num_points += other_buf->num_points;
}
_cairo_path_fixed_add_buf (path, buf);
}
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_default_context_new_path (void *abstract_cr)
{
cairo_default_context_t *cr = abstract_cr;
_cairo_path_fixed_fini (cr->path);
_cairo_path_fixed_init (cr->path);
return CAIRO_STATUS_SUCCESS;
}
cairo_path_fixed_t *
_cairo_path_fixed_create (void)
{
cairo_path_fixed_t *path = malloc (sizeof (cairo_path_fixed_t));
if (!path)
return NULL;
_cairo_path_fixed_init (path);
return path;
}
cairo_status_t
_cairo_default_context_init (cairo_default_context_t *cr, void *target)
{
_cairo_init (&cr->base, &_cairo_default_context_backend);
_cairo_path_fixed_init (cr->path);
cr->gstate = &cr->gstate_tail[0];
cr->gstate_freelist = &cr->gstate_tail[1];
cr->gstate_tail[1].next = NULL;
return _cairo_gstate_init (cr->gstate, target);
}
static cairo_status_t
_cairo_clip_intersect_rectangle (cairo_clip_t *clip,
const cairo_rectangle_int_t *rect)
{
cairo_clip_path_t *clip_path;
cairo_status_t status;
if (clip->path != NULL) {
if (rect->x <= clip->path->extents.x &&
rect->y <= clip->path->extents.y &&
rect->x + rect->width >= clip->path->extents.x + clip->path->extents.width &&
rect->y + rect->height >= clip->path->extents.y + clip->path->extents.height)
{
return CAIRO_STATUS_SUCCESS;
}
}
clip_path = _cairo_clip_path_create (clip);
if (unlikely (clip_path == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
_cairo_path_fixed_init (&clip_path->path);
status = _cairo_path_fixed_move_to (&clip_path->path,
_cairo_fixed_from_int (rect->x),
_cairo_fixed_from_int (rect->y));
assert (status == CAIRO_STATUS_SUCCESS);
status = _cairo_path_fixed_rel_line_to (&clip_path->path,
_cairo_fixed_from_int (rect->width),
_cairo_fixed_from_int (0));
assert (status == CAIRO_STATUS_SUCCESS);
status = _cairo_path_fixed_rel_line_to (&clip_path->path,
_cairo_fixed_from_int (0),
_cairo_fixed_from_int (rect->height));
assert (status == CAIRO_STATUS_SUCCESS);
status = _cairo_path_fixed_rel_line_to (&clip_path->path,
_cairo_fixed_from_int (-rect->width),
_cairo_fixed_from_int (0));
assert (status == CAIRO_STATUS_SUCCESS);
status = _cairo_path_fixed_close_path (&clip_path->path);
assert (status == CAIRO_STATUS_SUCCESS);
clip_path->extents = *rect;
clip_path->fill_rule = CAIRO_FILL_RULE_WINDING;
clip_path->tolerance = 1;
clip_path->antialias = CAIRO_ANTIALIAS_NONE;
clip_path->flags |= CAIRO_CLIP_PATH_IS_BOX;
/* could preallocate the region if it proves worthwhile */
return CAIRO_STATUS_SUCCESS;
}
cairo_path_fixed_t *
_cairo_path_fixed_create (void)
{
cairo_path_fixed_t *path;
path = malloc (sizeof (cairo_path_fixed_t));
if (!path) {
_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
return NULL;
}
_cairo_path_fixed_init (path);
return path;
}
cairo_surface_t *
_cairo_clip_get_surface (const cairo_clip_t *clip,
cairo_surface_t *target,
int *tx, int *ty)
{
cairo_surface_t *surface;
cairo_status_t status;
cairo_clip_t *copy, *region;
cairo_clip_path_t *copy_path, *clip_path;
if (clip->num_boxes) {
cairo_path_fixed_t path;
int i;
surface = _cairo_surface_create_scratch (target,
CAIRO_CONTENT_ALPHA,
clip->extents.width,
clip->extents.height,
CAIRO_COLOR_TRANSPARENT);
if (unlikely (surface->status))
return surface;
_cairo_path_fixed_init (&path);
status = CAIRO_STATUS_SUCCESS;
for (i = 0; status == CAIRO_STATUS_SUCCESS && i < clip->num_boxes; i++) {
status = _cairo_path_fixed_add_box (&path, &clip->boxes[i],
-_cairo_fixed_from_int (clip->extents.x),
-_cairo_fixed_from_int (clip->extents.y));
}
if (status == CAIRO_STATUS_SUCCESS)
status = _cairo_surface_fill (surface,
CAIRO_OPERATOR_ADD,
&_cairo_pattern_white.base,
&path,
CAIRO_FILL_RULE_WINDING,
1.,
CAIRO_ANTIALIAS_DEFAULT,
NULL);
_cairo_path_fixed_fini (&path);
if (unlikely (status)) {
cairo_surface_destroy (surface);
return _cairo_surface_create_in_error (status);
}
} else {
surface = _cairo_surface_create_scratch (target,
CAIRO_CONTENT_ALPHA,
clip->extents.width,
clip->extents.height,
CAIRO_COLOR_WHITE);
if (unlikely (surface->status))
return surface;
}
copy = _cairo_clip_copy_with_translation (clip,
-clip->extents.x,
-clip->extents.y);
copy_path = copy->path;
copy->path = NULL;
region = copy;
if (! _cairo_clip_is_region (copy))
region = _cairo_clip_copy_region (copy);
status = CAIRO_STATUS_SUCCESS;
clip_path = copy_path;
while (status == CAIRO_STATUS_SUCCESS && clip_path) {
status = _cairo_surface_fill (surface,
CAIRO_OPERATOR_IN,
&_cairo_pattern_white.base,
&clip_path->path,
clip_path->fill_rule,
clip_path->tolerance,
clip_path->antialias,
region);
clip_path = clip_path->prev;
}
copy->path = copy_path;
_cairo_clip_destroy (copy);
if (region != copy)
_cairo_clip_destroy (region);
if (unlikely (status)) {
cairo_surface_destroy (surface);
return _cairo_surface_create_in_error (status);
}
*tx = clip->extents.x;
*ty = clip->extents.y;
return surface;
}
cairo_int_status_t
i965_surface_glyphs (void *abstract_surface,
cairo_operator_t op,
const cairo_pattern_t *source,
cairo_glyph_t *g,
int num_glyphs,
cairo_scaled_font_t *scaled_font,
cairo_clip_t *clip,
int *num_remaining)
{
i965_surface_t *surface = abstract_surface;
i965_surface_t *mask = NULL;
i965_device_t *device;
i965_glyphs_t glyphs;
cairo_composite_rectangles_t extents;
cairo_clip_t local_clip;
cairo_bool_t have_clip = FALSE;
cairo_bool_t overlap;
cairo_region_t *clip_region = NULL;
intel_bo_t *last_bo = NULL;
cairo_scaled_glyph_t *glyph_cache[64];
cairo_status_t status;
int mask_x = 0, mask_y = 0;
int i = 0;
*num_remaining = 0;
status = _cairo_composite_rectangles_init_for_glyphs (&extents,
surface->intel.drm.width,
surface->intel.drm.height,
op, source,
scaled_font,
g, num_glyphs,
clip,
&overlap);
if (unlikely (status))
return status;
if (clip != NULL && _cairo_clip_contains_rectangle (clip, &extents.mask))
clip = NULL;
if (clip != NULL && extents.is_bounded) {
clip = _cairo_clip_init_copy (&local_clip, clip);
status = _cairo_clip_rectangle (clip, &extents.bounded);
if (unlikely (status))
return status;
have_clip = TRUE;
}
if (overlap || ! extents.is_bounded) {
cairo_format_t format;
format = CAIRO_FORMAT_A8;
if (scaled_font->options.antialias == CAIRO_ANTIALIAS_SUBPIXEL)
format = CAIRO_FORMAT_ARGB32;
mask = (i965_surface_t *)
i965_surface_create_internal (&i965_device (surface)->intel.base,
format,
extents.bounded.width,
extents.bounded.height,
I965_TILING_DEFAULT,
TRUE);
if (unlikely (mask->intel.drm.base.status))
return mask->intel.drm.base.status;
status = _cairo_surface_paint (&mask->intel.drm.base,
CAIRO_OPERATOR_CLEAR,
&_cairo_pattern_clear.base,
NULL);
if (unlikely (status)) {
cairo_surface_destroy (&mask->intel.drm.base);
return status;
}
i965_shader_init (&glyphs.shader, mask, CAIRO_OPERATOR_ADD);
status = i965_shader_acquire_pattern (&glyphs.shader, &glyphs.shader.source,
&_cairo_pattern_white.base,
&extents.bounded);
if (unlikely (status)) {
cairo_surface_destroy (&mask->intel.drm.base);
return status;
}
mask_x = -extents.bounded.x;
mask_y = -extents.bounded.y;
} else {
i965_shader_init (&glyphs.shader, surface, op);
status = i965_shader_acquire_pattern (&glyphs.shader, &glyphs.shader.source,
source, &extents.bounded);
if (unlikely (status))
return status;
if (clip != NULL) {
status = _cairo_clip_get_region (clip, &clip_region);
assert (status == CAIRO_STATUS_SUCCESS || status == CAIRO_INT_STATUS_UNSUPPORTED);
if (status == CAIRO_INT_STATUS_UNSUPPORTED)
i965_shader_set_clip (&glyphs.shader, clip);
}
}
glyphs.head.next = NULL;
glyphs.head.bo = NULL;
glyphs.head.count = 0;
glyphs.tail = &glyphs.head;
device = i965_device (surface);
if (mask != NULL || clip_region == NULL) {
glyphs.get_rectangle = i965_glyphs_emit_rectangle;
} else {
glyphs.get_rectangle = i965_glyphs_accumulate_rectangle;
glyphs.head.bo = intel_bo_create (&device->intel,
I965_VERTEX_SIZE, I965_VERTEX_SIZE,
FALSE, I915_TILING_NONE, 0);
if (unlikely (glyphs.head.bo == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
glyphs.vbo_base = intel_bo_map (&device->intel, glyphs.head.bo);
}
glyphs.vbo_offset = 0;
status = cairo_device_acquire (&device->intel.base.base);
if (unlikely (status))
goto CLEANUP_GLYPHS;
_cairo_scaled_font_freeze_cache (scaled_font);
//private = _cairo_scaled_font_get_device (scaled_font, device);
if (scaled_font->surface_private == NULL) {
scaled_font->surface_private = device;
scaled_font->surface_backend = surface->intel.drm.base.backend;
cairo_list_add (&scaled_font->link, &device->intel.fonts);
}
memset (glyph_cache, 0, sizeof (glyph_cache));
for (i = 0; i < num_glyphs; i++) {
cairo_scaled_glyph_t *scaled_glyph;
int x, y, x1, x2, y1, y2;
int cache_index = g[i].index % ARRAY_LENGTH (glyph_cache);
intel_glyph_t *glyph;
scaled_glyph = glyph_cache[cache_index];
if (scaled_glyph == NULL ||
_cairo_scaled_glyph_index (scaled_glyph) != g[i].index)
{
status = _cairo_scaled_glyph_lookup (scaled_font,
g[i].index,
CAIRO_SCALED_GLYPH_INFO_METRICS,
&scaled_glyph);
if (unlikely (status))
goto FINISH;
glyph_cache[cache_index] = scaled_glyph;
}
if (unlikely (scaled_glyph->metrics.width == 0 ||
scaled_glyph->metrics.height == 0))
{
continue;
}
/* XXX glyph images are snapped to pixel locations */
x = _cairo_lround (g[i].x);
y = _cairo_lround (g[i].y);
x1 = x + _cairo_fixed_integer_floor (scaled_glyph->bbox.p1.x);
y1 = y + _cairo_fixed_integer_floor (scaled_glyph->bbox.p1.y);
x2 = x + _cairo_fixed_integer_ceil (scaled_glyph->bbox.p2.x);
y2 = y + _cairo_fixed_integer_ceil (scaled_glyph->bbox.p2.y);
if (x2 < extents.bounded.x ||
y2 < extents.bounded.y ||
x1 > extents.bounded.x + extents.bounded.width ||
y1 > extents.bounded.y + extents.bounded.height)
{
continue;
}
if (scaled_glyph->surface_private == NULL) {
status = intel_get_glyph (&device->intel, scaled_font, scaled_glyph);
if (unlikely (status == CAIRO_INT_STATUS_NOTHING_TO_DO)) {
status = CAIRO_STATUS_SUCCESS;
continue;
}
if (unlikely (status))
goto FINISH;
}
glyph = intel_glyph_pin (scaled_glyph->surface_private);
if (glyph->cache->buffer.bo != last_bo) {
intel_buffer_cache_t *cache = glyph->cache;
glyphs.shader.mask.type.vertex = VS_GLYPHS;
glyphs.shader.mask.type.fragment = FS_GLYPHS;
glyphs.shader.mask.type.pattern = PATTERN_BASE;
glyphs.shader.mask.base.bo = cache->buffer.bo;
glyphs.shader.mask.base.format = cache->buffer.format;
glyphs.shader.mask.base.width = cache->buffer.width;
glyphs.shader.mask.base.height = cache->buffer.height;
glyphs.shader.mask.base.stride = cache->buffer.stride;
glyphs.shader.mask.base.filter = i965_filter (CAIRO_FILTER_NEAREST);
glyphs.shader.mask.base.extend = i965_extend (CAIRO_EXTEND_NONE);
glyphs.shader.mask.base.content = CAIRO_CONTENT_ALPHA; /* XXX */
glyphs.shader.committed = FALSE;
status = i965_shader_commit (&glyphs.shader, device);
if (unlikely (status))
goto FINISH;
last_bo = cache->buffer.bo;
}
x2 = x1 + glyph->width;
y2 = y1 + glyph->height;
if (mask_x)
x1 += mask_x, x2 += mask_x;
if (mask_y)
y1 += mask_y, y2 += mask_y;
i965_add_glyph_rectangle (&glyphs, x1, y1, x2, y2, glyph);
}
if (mask != NULL && clip_region != NULL)
i965_clipped_vertices (device, &glyphs.head, clip_region);
status = CAIRO_STATUS_SUCCESS;
FINISH:
_cairo_scaled_font_thaw_cache (scaled_font);
cairo_device_release (surface->intel.drm.base.device);
CLEANUP_GLYPHS:
i965_shader_fini (&glyphs.shader);
if (glyphs.head.bo != NULL) {
struct i965_vbo *vbo, *next;
intel_bo_destroy (&device->intel, glyphs.head.bo);
for (vbo = glyphs.head.next; vbo != NULL; vbo = next) {
next = vbo->next;
intel_bo_destroy (&device->intel, vbo->bo);
free (vbo);
}
}
if (unlikely (status == CAIRO_INT_STATUS_UNSUPPORTED)) {
cairo_path_fixed_t path;
_cairo_path_fixed_init (&path);
status = _cairo_scaled_font_glyph_path (scaled_font,
g + i, num_glyphs - i,
&path);
if (mask_x | mask_y) {
_cairo_path_fixed_translate (&path,
_cairo_fixed_from_int (mask_x),
_cairo_fixed_from_int (mask_y));
}
if (likely (status == CAIRO_STATUS_SUCCESS)) {
status = surface->intel.drm.base.backend->fill (glyphs.shader.target,
glyphs.shader.op,
mask != NULL ? &_cairo_pattern_white.base : source,
&path,
CAIRO_FILL_RULE_WINDING,
0,
scaled_font->options.antialias,
clip);
}
_cairo_path_fixed_fini (&path);
}
if (mask != NULL) {
if (likely (status == CAIRO_STATUS_SUCCESS)) {
status = i965_surface_mask_internal (surface, op, source, mask,
clip, &extents);
}
cairo_surface_finish (&mask->intel.drm.base);
cairo_surface_destroy (&mask->intel.drm.base);
}
if (have_clip)
_cairo_clip_fini (&local_clip);
return status;
}