#include "pixman-private.h"
-/*
- * Computing composite region
- */
-static inline pixman_bool_t
-clip_general_image (pixman_region32_t * region,
- pixman_region32_t * clip,
- int dx,
- int dy)
-{
- if (pixman_region32_n_rects (region) == 1 &&
- pixman_region32_n_rects (clip) == 1)
- {
- pixman_box32_t * rbox = pixman_region32_rectangles (region, NULL);
- pixman_box32_t * cbox = pixman_region32_rectangles (clip, NULL);
- int v;
-
- if (rbox->x1 < (v = cbox->x1 + dx))
- rbox->x1 = v;
- if (rbox->x2 > (v = cbox->x2 + dx))
- rbox->x2 = v;
- if (rbox->y1 < (v = cbox->y1 + dy))
- rbox->y1 = v;
- if (rbox->y2 > (v = cbox->y2 + dy))
- rbox->y2 = v;
- if (rbox->x1 >= rbox->x2 || rbox->y1 >= rbox->y2)
- {
- pixman_region32_init (region);
- return FALSE;
- }
- }
- else if (!pixman_region32_not_empty (clip))
- {
- return FALSE;
- }
- else
- {
- if (dx || dy)
- pixman_region32_translate (region, -dx, -dy);
+#define N_CACHED_FAST_PATHS 8
- if (!pixman_region32_intersect (region, region, clip))
- return FALSE;
-
- if (dx || dy)
- pixman_region32_translate (region, dx, dy);
- }
-
- return pixman_region32_not_empty (region);
-}
-
-static inline pixman_bool_t
-clip_source_image (pixman_region32_t * region,
- pixman_image_t * image,
- int dx,
- int dy)
+typedef struct
{
- /* Source clips are ignored, unless they are explicitly turned on
- * and the clip in question was set by an X client. (Because if
- * the clip was not set by a client, then it is a hierarchy
- * clip and those should always be ignored for sources).
- */
- if (!image->common.clip_sources || !image->common.client_clip)
- return TRUE;
+ struct
+ {
+ pixman_implementation_t * imp;
+ pixman_fast_path_t fast_path;
+ } cache [N_CACHED_FAST_PATHS];
+} cache_t;
- return clip_general_image (region,
- &image->common.clip_region,
- dx, dy);
-}
+PIXMAN_DEFINE_THREAD_LOCAL (cache_t, fast_path_cache);
-/*
- * returns FALSE if the final region is empty. Indistinguishable from
- * an allocation failure, but rendering ignores those anyways.
- */
-static pixman_bool_t
-pixman_compute_composite_region32 (pixman_region32_t * region,
- pixman_image_t * src_image,
- pixman_image_t * mask_image,
- pixman_image_t * dst_image,
- int32_t src_x,
- int32_t src_y,
- int32_t mask_x,
- int32_t mask_y,
- int32_t dest_x,
- int32_t dest_y,
- int32_t width,
- int32_t height)
+pixman_bool_t
+_pixman_lookup_composite_function (pixman_implementation_t *toplevel,
+ pixman_op_t op,
+ pixman_format_code_t src_format,
+ uint32_t src_flags,
+ pixman_format_code_t mask_format,
+ uint32_t mask_flags,
+ pixman_format_code_t dest_format,
+ uint32_t dest_flags,
+ pixman_implementation_t **out_imp,
+ pixman_composite_func_t *out_func)
{
- region->extents.x1 = dest_x;
- region->extents.x2 = dest_x + width;
- region->extents.y1 = dest_y;
- region->extents.y2 = dest_y + height;
-
- region->extents.x1 = MAX (region->extents.x1, 0);
- region->extents.y1 = MAX (region->extents.y1, 0);
- region->extents.x2 = MIN (region->extents.x2, dst_image->bits.width);
- region->extents.y2 = MIN (region->extents.y2, dst_image->bits.height);
-
- region->data = 0;
+ pixman_implementation_t *imp;
+ cache_t *cache;
+ int i;
- /* Check for empty operation */
- if (region->extents.x1 >= region->extents.x2 ||
- region->extents.y1 >= region->extents.y2)
- {
- pixman_region32_init (region);
- return FALSE;
- }
+ /* Check cache for fast paths */
+ cache = PIXMAN_GET_THREAD_LOCAL (fast_path_cache);
- if (dst_image->common.have_clip_region)
+ for (i = 0; i < N_CACHED_FAST_PATHS; ++i)
{
- if (!clip_general_image (region, &dst_image->common.clip_region, 0, 0))
+ const pixman_fast_path_t *info = &(cache->cache[i].fast_path);
+
+ /* Note that we check for equality here, not whether
+ * the cached fast path matches. This is to prevent
+ * us from selecting an overly general fast path
+ * when a more specific one would work.
+ */
+ if (info->op == op &&
+ info->src_format == src_format &&
+ info->mask_format == mask_format &&
+ info->dest_format == dest_format &&
+ info->src_flags == src_flags &&
+ info->mask_flags == mask_flags &&
+ info->dest_flags == dest_flags &&
+ info->func)
{
- pixman_region32_fini (region);
- return FALSE;
- }
- }
+ *out_imp = cache->cache[i].imp;
+ *out_func = cache->cache[i].fast_path.func;
- if (dst_image->common.alpha_map && dst_image->common.alpha_map->common.have_clip_region)
- {
- if (!clip_general_image (region, &dst_image->common.alpha_map->common.clip_region,
- -dst_image->common.alpha_origin_x,
- -dst_image->common.alpha_origin_y))
- {
- pixman_region32_fini (region);
- return FALSE;
+ goto update_cache;
}
}
- /* clip against src */
- if (src_image->common.have_clip_region)
+ for (imp = toplevel; imp != NULL; imp = imp->delegate)
{
- if (!clip_source_image (region, src_image, dest_x - src_x, dest_y - src_y))
- {
- pixman_region32_fini (region);
- return FALSE;
- }
- }
- if (src_image->common.alpha_map && src_image->common.alpha_map->common.have_clip_region)
- {
- if (!clip_source_image (region, (pixman_image_t *)src_image->common.alpha_map,
- dest_x - (src_x - src_image->common.alpha_origin_x),
- dest_y - (src_y - src_image->common.alpha_origin_y)))
- {
- pixman_region32_fini (region);
- return FALSE;
- }
- }
- /* clip against mask */
- if (mask_image && mask_image->common.have_clip_region)
- {
- if (!clip_source_image (region, mask_image, dest_x - mask_x, dest_y - mask_y))
- {
- pixman_region32_fini (region);
- return FALSE;
- }
- if (mask_image->common.alpha_map && mask_image->common.alpha_map->common.have_clip_region)
+ const pixman_fast_path_t *info = imp->fast_paths;
+
+ while (info->op != PIXMAN_OP_NONE)
{
- if (!clip_source_image (region, (pixman_image_t *)mask_image->common.alpha_map,
- dest_x - (mask_x - mask_image->common.alpha_origin_x),
- dest_y - (mask_y - mask_image->common.alpha_origin_y)))
+ if ((info->op == op || info->op == PIXMAN_OP_any) &&
+ /* Formats */
+ ((info->src_format == src_format) ||
+ (info->src_format == PIXMAN_any)) &&
+ ((info->mask_format == mask_format) ||
+ (info->mask_format == PIXMAN_any)) &&
+ ((info->dest_format == dest_format) ||
+ (info->dest_format == PIXMAN_any)) &&
+ /* Flags */
+ (info->src_flags & src_flags) == info->src_flags &&
+ (info->mask_flags & mask_flags) == info->mask_flags &&
+ (info->dest_flags & dest_flags) == info->dest_flags)
{
- pixman_region32_fini (region);
- return FALSE;
+ *out_imp = imp;
+ *out_func = info->func;
+
+ /* Set i to the last spot in the cache so that the
+ * move-to-front code below will work
+ */
+ i = N_CACHED_FAST_PATHS - 1;
+
+ goto update_cache;
}
+
+ ++info;
}
}
+ return FALSE;
+
+update_cache:
+ if (i)
+ {
+ while (i--)
+ cache->cache[i + 1] = cache->cache[i];
+
+ cache->cache[0].imp = *out_imp;
+ cache->cache[0].fast_path.op = op;
+ cache->cache[0].fast_path.src_format = src_format;
+ cache->cache[0].fast_path.src_flags = src_flags;
+ cache->cache[0].fast_path.mask_format = mask_format;
+ cache->cache[0].fast_path.mask_flags = mask_flags;
+ cache->cache[0].fast_path.dest_format = dest_format;
+ cache->cache[0].fast_path.dest_flags = dest_flags;
+ cache->cache[0].fast_path.func = *out_func;
+ }
return TRUE;
}
-PIXMAN_EXPORT pixman_bool_t
-pixman_compute_composite_region (pixman_region16_t * region,
- pixman_image_t * src_image,
- pixman_image_t * mask_image,
- pixman_image_t * dst_image,
- int16_t src_x,
- int16_t src_y,
- int16_t mask_x,
- int16_t mask_y,
- int16_t dest_x,
- int16_t dest_y,
- uint16_t width,
- uint16_t height)
+pixman_bool_t
+_pixman_multiply_overflows_size (size_t a, size_t b)
{
- pixman_region32_t r32;
- pixman_bool_t retval;
-
- pixman_region32_init (&r32);
-
- retval = pixman_compute_composite_region32 (
- &r32, src_image, mask_image, dst_image,
- src_x, src_y, mask_x, mask_y, dest_x, dest_y,
- width, height);
-
- if (retval)
- {
- if (!pixman_region16_copy_from_region32 (region, &r32))
- retval = FALSE;
- }
-
- pixman_region32_fini (&r32);
- return retval;
+ return a >= SIZE_MAX / b;
}
pixman_bool_t
-pixman_multiply_overflows_int (unsigned int a,
- unsigned int b)
+_pixman_multiply_overflows_int (unsigned int a, unsigned int b)
{
return a >= INT32_MAX / b;
}
pixman_bool_t
-pixman_addition_overflows_int (unsigned int a,
- unsigned int b)
+_pixman_addition_overflows_int (unsigned int a, unsigned int b)
{
return a > INT32_MAX - b;
}
}
/*
- * Helper routine to expand a color component from 0 < n <= 8 bits to 16
- * bits by replication.
- */
-static inline uint64_t
-expand16 (const uint8_t val, int nbits)
-{
- /* Start out with the high bit of val in the high bit of result. */
- uint16_t result = (uint16_t)val << (16 - nbits);
-
- if (nbits == 0)
- return 0;
-
- /* Copy the bits in result, doubling the number of bits each time, until
- * we fill all 16 bits.
- */
- while (nbits < 16)
- {
- result |= result >> nbits;
- nbits *= 2;
- }
-
- return result;
-}
-
-/*
* This function expands images from ARGB8 format to ARGB16. To preserve
* precision, it needs to know the original source format. For example, if the
* source was PIXMAN_x1r5g5b5 and the red component contained bits 12345, then
for (i = width - 1; i >= 0; i--)
{
const uint32_t pixel = src[i];
- const uint8_t a = (pixel >> a_shift) & a_mask,
- r = (pixel >> r_shift) & r_mask,
- g = (pixel >> g_shift) & g_mask,
- b = (pixel >> b_shift) & b_mask;
- const uint64_t a16 = a_size ? expand16 (a, a_size) : 0xffff,
- r16 = expand16 (r, r_size),
- g16 = expand16 (g, g_size),
- b16 = expand16 (b, b_size);
+ uint8_t a, r, g, b;
+ uint64_t a16, r16, g16, b16;
+ if (a_size)
+ {
+ a = (pixel >> a_shift) & a_mask;
+ a16 = unorm_to_unorm (a, a_size, 16);
+ }
+ else
+ {
+ a16 = 0xffff;
+ }
+
+ if (r_size)
+ {
+ r = (pixel >> r_shift) & r_mask;
+ g = (pixel >> g_shift) & g_mask;
+ b = (pixel >> b_shift) & b_mask;
+ r16 = unorm_to_unorm (r, r_size, 16);
+ g16 = unorm_to_unorm (g, g_size, 16);
+ b16 = unorm_to_unorm (b, b_size, 16);
+ }
+ else
+ {
+ r16 = g16 = b16 = 0;
+ }
+
dst[i] = a16 << 48 | r16 << 32 | g16 << 16 | b16;
}
}
}
}
-static void
-walk_region_internal (pixman_implementation_t *imp,
- pixman_op_t op,
- pixman_image_t * src_image,
- pixman_image_t * mask_image,
- pixman_image_t * dst_image,
- int32_t src_x,
- int32_t src_y,
- int32_t mask_x,
- int32_t mask_y,
- int32_t dest_x,
- int32_t dest_y,
- int32_t width,
- int32_t height,
- pixman_bool_t src_repeat,
- pixman_bool_t mask_repeat,
- pixman_region32_t * region,
- pixman_composite_func_t composite_rect)
+uint32_t *
+_pixman_iter_get_scanline_noop (pixman_iter_t *iter, const uint32_t *mask)
{
- int n;
- const pixman_box32_t *pbox;
- int w, h, w_this, h_this;
- int x_msk, y_msk, x_src, y_src, x_dst, y_dst;
-
- pbox = pixman_region32_rectangles (region, &n);
- while (n--)
- {
- h = pbox->y2 - pbox->y1;
- y_src = pbox->y1 - dest_y + src_y;
- y_msk = pbox->y1 - dest_y + mask_y;
- y_dst = pbox->y1;
-
- while (h)
- {
- h_this = h;
- w = pbox->x2 - pbox->x1;
- x_src = pbox->x1 - dest_x + src_x;
- x_msk = pbox->x1 - dest_x + mask_x;
- x_dst = pbox->x1;
-
- if (mask_repeat)
- {
- y_msk = MOD (y_msk, mask_image->bits.height);
- if (h_this > mask_image->bits.height - y_msk)
- h_this = mask_image->bits.height - y_msk;
- }
-
- if (src_repeat)
- {
- y_src = MOD (y_src, src_image->bits.height);
- if (h_this > src_image->bits.height - y_src)
- h_this = src_image->bits.height - y_src;
- }
-
- while (w)
- {
- w_this = w;
-
- if (mask_repeat)
- {
- x_msk = MOD (x_msk, mask_image->bits.width);
- if (w_this > mask_image->bits.width - x_msk)
- w_this = mask_image->bits.width - x_msk;
- }
-
- if (src_repeat)
- {
- x_src = MOD (x_src, src_image->bits.width);
- if (w_this > src_image->bits.width - x_src)
- w_this = src_image->bits.width - x_src;
- }
-
- (*composite_rect) (imp, op,
- src_image, mask_image, dst_image,
- x_src, y_src, x_msk, y_msk, x_dst, y_dst,
- w_this, h_this);
- w -= w_this;
-
- x_src += w_this;
- x_msk += w_this;
- x_dst += w_this;
- }
-
- h -= h_this;
- y_src += h_this;
- y_msk += h_this;
- y_dst += h_this;
- }
-
- pbox++;
- }
-}
-
-void
-_pixman_walk_composite_region (pixman_implementation_t *imp,
- pixman_op_t op,
- pixman_image_t * src_image,
- pixman_image_t * mask_image,
- pixman_image_t * dst_image,
- int32_t src_x,
- int32_t src_y,
- int32_t mask_x,
- int32_t mask_y,
- int32_t dest_x,
- int32_t dest_y,
- int32_t width,
- int32_t height,
- pixman_composite_func_t composite_rect)
-{
- pixman_region32_t region;
-
- pixman_region32_init (®ion);
-
- if (pixman_compute_composite_region32 (
- ®ion, src_image, mask_image, dst_image,
- src_x, src_y, mask_x, mask_y, dest_x, dest_y,
- width, height))
- {
- walk_region_internal (imp, op,
- src_image, mask_image, dst_image,
- src_x, src_y, mask_x, mask_y, dest_x, dest_y,
- width, height, FALSE, FALSE,
- ®ion,
- composite_rect);
-
- pixman_region32_fini (®ion);
- }
-}
-
-static void
-get_image_info (pixman_image_t *image,
- pixman_format_code_t *code,
- uint32_t *flags)
-{
- *flags = 0;
-
- if (!image)
- {
- *code = PIXMAN_null;
- }
- else
- {
- if (!image->common.transform)
- *flags |= FAST_PATH_ID_TRANSFORM;
-
- if (!image->common.alpha_map)
- *flags |= FAST_PATH_NO_ALPHA_MAP;
-
- if (image->common.filter != PIXMAN_FILTER_CONVOLUTION)
- *flags |= FAST_PATH_NO_CONVOLUTION_FILTER;
-
- if (image->common.repeat != PIXMAN_REPEAT_PAD)
- *flags |= FAST_PATH_NO_PAD_REPEAT;
-
- if (image->common.repeat != PIXMAN_REPEAT_REFLECT)
- *flags |= FAST_PATH_NO_REFLECT_REPEAT;
-
- *flags |= (FAST_PATH_NO_ACCESSORS | FAST_PATH_NO_WIDE_FORMAT);
- if (image->type == BITS)
- {
- if (image->bits.read_func || image->bits.write_func)
- *flags &= ~FAST_PATH_NO_ACCESSORS;
-
- if (PIXMAN_FORMAT_IS_WIDE (image->bits.format))
- *flags &= ~FAST_PATH_NO_WIDE_FORMAT;
- }
-
- if (image->common.component_alpha)
- *flags |= FAST_PATH_COMPONENT_ALPHA;
- else
- *flags |= FAST_PATH_UNIFIED_ALPHA;
-
- if (_pixman_image_is_solid (image))
- *code = PIXMAN_solid;
- else if (image->common.type == BITS)
- *code = image->bits.format;
- else
- *code = PIXMAN_unknown;
- }
-}
-
-static force_inline pixman_bool_t
-image_covers (pixman_image_t *image,
- pixman_box32_t *extents,
- int x,
- int y)
-{
- if (image->common.type == BITS &&
- image->common.repeat == PIXMAN_REPEAT_NONE)
- {
- if (x > extents->x1 || y > extents->y1 ||
- x + image->bits.width < extents->x2 ||
- y + image->bits.height < extents->y2)
- {
- return FALSE;
- }
- }
-
- return TRUE;
-}
-
-static force_inline pixman_bool_t
-sources_cover (pixman_image_t *src,
- pixman_image_t *mask,
- pixman_box32_t *extents,
- int src_x,
- int src_y,
- int mask_x,
- int mask_y,
- int dest_x,
- int dest_y)
-{
- if (!image_covers (src, extents, dest_x - src_x, dest_y - src_y))
- return FALSE;
-
- if (!mask)
- return TRUE;
-
- if (!image_covers (mask, extents, dest_x - mask_x, dest_y - mask_y))
- return FALSE;
-
- return TRUE;
-}
-
-pixman_bool_t
-_pixman_run_fast_path (const pixman_fast_path_t *paths,
- pixman_implementation_t * imp,
- pixman_op_t op,
- pixman_image_t * src,
- pixman_image_t * mask,
- pixman_image_t * dest,
- int32_t src_x,
- int32_t src_y,
- int32_t mask_x,
- int32_t mask_y,
- int32_t dest_x,
- int32_t dest_y,
- int32_t width,
- int32_t height)
-{
- pixman_format_code_t src_format, mask_format, dest_format;
- uint32_t src_flags, mask_flags, dest_flags;
- pixman_composite_func_t func;
- const pixman_fast_path_t *info;
- pixman_bool_t result;
- pixman_region32_t region;
- pixman_box32_t *extents;
-
- get_image_info (src, &src_format, &src_flags);
- get_image_info (mask, &mask_format, &mask_flags);
- get_image_info (dest, &dest_format, &dest_flags);
-
- /* Check for pixbufs */
- if ((mask_format == PIXMAN_a8r8g8b8 || mask_format == PIXMAN_a8b8g8r8) &&
- (src->type == BITS && src->bits.bits == mask->bits.bits) &&
- (src->common.repeat == mask->common.repeat) &&
- (src_x == mask_x && src_y == mask_y))
- {
- if (src_format == PIXMAN_x8b8g8r8)
- src_format = mask_format = PIXMAN_pixbuf;
- else if (src_format == PIXMAN_x8r8g8b8)
- src_format = mask_format = PIXMAN_rpixbuf;
- }
-
- pixman_region32_init (®ion);
-
- if (!pixman_compute_composite_region32 (
- ®ion, src, mask, dest,
- src_x, src_y, mask_x, mask_y, dest_x, dest_y, width, height))
- {
- return TRUE;
- }
-
- result = FALSE;
-
- extents = pixman_region32_extents (®ion);
-
- if (image_covers (src, extents, dest_x - src_x, dest_y - src_y))
- src_flags |= FAST_PATH_COVERS_CLIP;
-
- if (mask && image_covers (mask, extents, dest_x - mask_x, dest_y - mask_y))
- mask_flags |= FAST_PATH_COVERS_CLIP;
-
- func = NULL;
- for (info = paths; info->op != PIXMAN_OP_NONE; ++info)
- {
- if ((info->op == op || info->op == PIXMAN_OP_any) &&
- /* src */
- ((info->src_format == src_format) ||
- (info->src_format == PIXMAN_any)) &&
- (info->src_flags & src_flags) == info->src_flags &&
- /* mask */
- ((info->mask_format == mask_format) ||
- (info->mask_format == PIXMAN_any)) &&
- (info->mask_flags & mask_flags) == info->mask_flags &&
- /* dest */
- ((info->dest_format == dest_format) ||
- (info->dest_format == PIXMAN_any)) &&
- (info->dest_flags & dest_flags) == info->dest_flags)
- {
- func = info->func;
- break;
- }
- }
-
- if (func)
- {
- pixman_bool_t src_repeat, mask_repeat;
-
- src_repeat =
- src->type == BITS &&
- src_flags & FAST_PATH_ID_TRANSFORM &&
- src->common.repeat == PIXMAN_REPEAT_NORMAL &&
- src_format != PIXMAN_solid;
-
- mask_repeat =
- mask &&
- mask->type == BITS &&
- mask_flags & FAST_PATH_ID_TRANSFORM &&
- mask->common.repeat == PIXMAN_REPEAT_NORMAL &&
- mask_format != PIXMAN_solid;
-
- walk_region_internal (imp, op,
- src, mask, dest,
- src_x, src_y, mask_x, mask_y,
- dest_x, dest_y,
- width, height,
- src_repeat, mask_repeat,
- ®ion,
- func);
-
- result = TRUE;
- }
-
- pixman_region32_fini (®ion);
- return result;
+ return iter->buffer;
}
#define N_TMP_BOXES (16)
return retval;
}
+
+#ifdef DEBUG
+
+void
+_pixman_log_error (const char *function, const char *message)
+{
+ static int n_messages = 0;
+
+ if (n_messages < 10)
+ {
+ fprintf (stderr,
+ "*** BUG ***\n"
+ "In %s: %s\n"
+ "Set a breakpoint on '_pixman_log_error' to debug\n\n",
+ function, message);
+
+ n_messages++;
+ }
+}
+
+#endif
projects / profile / ivi / pixman.git / blobdiff