Exemplo n.º 1
0
cairo_status_t
i965_clip_and_composite_spans (i965_surface_t		*dst,
			       cairo_operator_t		 op,
			       const cairo_pattern_t	*pattern,
			       cairo_antialias_t	 antialias,
			       i965_spans_func_t	 draw_func,
			       void			*draw_closure,
			       const cairo_composite_rectangles_t*extents,
			       cairo_clip_t		*clip)
{
    i965_spans_t spans;
    i965_device_t *device;
    cairo_status_t status;

    if (op == CAIRO_OPERATOR_CLEAR) {
	pattern = &_cairo_pattern_white.base;
	op = CAIRO_OPERATOR_DEST_OUT;
    }

    status = i965_spans_init (&spans, dst, op, pattern, antialias, clip, extents);
    if (unlikely (status))
	return status;

    spans.shader.mask.base.content  = CAIRO_CONTENT_ALPHA;
    spans.shader.mask.type.fragment = FS_SPANS;
    spans.shader.mask.type.vertex   = VS_SPANS;
    spans.shader.mask.type.pattern  = PATTERN_BASE;

    status = cairo_device_acquire (dst->intel.drm.base.device);
    if (unlikely (status))
	goto CLEANUP_SPANS;

    device = i965_device (dst);
    status = i965_shader_commit (&spans.shader, device);
    if (unlikely (status))
	goto CLEANUP_DEVICE;

    status = draw_func (draw_closure, &spans.renderer, spans.extents);
    if (spans.clip_region != NULL && status == CAIRO_STATUS_SUCCESS)
	i965_clipped_vertices (device, &spans.head, spans.clip_region);

  CLEANUP_DEVICE:
    cairo_device_release (dst->intel.drm.base.device);
  CLEANUP_SPANS:
    i965_spans_fini (&spans);

    return status;
}
Exemplo n.º 2
0
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;
}