#include "pixman-combine32.h"
#include "pixman-private.h"
+typedef struct pixman_iter_t pixman_iter_t;
+typedef enum
+{
+ ITER_NARROW = (1 << 0)
+} iter_flags_t;
+
+struct pixman_iter_t
+{
+ uint32_t *(* get_scanline) (pixman_iter_t *iter, const uint32_t *mask);
+ void (* write_back) (pixman_iter_t *iter);
+
+ pixman_image_t * image;
+ uint32_t * buffer;
+ int x, y;
+ int width;
+};
+
+static uint32_t *
+src_get_scanline_null (pixman_iter_t *iter, const uint32_t *mask)
+{
+ return NULL;
+}
+
+static uint32_t *
+src_get_scanline_narrow (pixman_iter_t *iter, const uint32_t *mask)
+{
+ _pixman_image_get_scanline_32 (
+ iter->image, iter->x, iter->y++, iter->width, iter->buffer, mask);
+
+ return iter->buffer;
+}
+
+static uint32_t *
+src_get_scanline_wide (pixman_iter_t *iter, const uint32_t *mask)
+{
+ _pixman_image_get_scanline_64 (
+ iter->image, iter->x, iter->y++, iter->width, iter->buffer, mask);
+
+ return iter->buffer;
+}
+
+static void
+src_iter_init (pixman_implementation_t *imp,
+ pixman_iter_t *iter,
+ pixman_image_t *image,
+ int x, int y, int width, int height,
+ uint8_t *buffer, iter_flags_t flags)
+{
+ iter->image = image;
+ iter->x = x;
+ iter->y = y;
+ iter->width = width;
+ iter->buffer = (uint32_t *)buffer;
+
+ if (!image)
+ iter->get_scanline = src_get_scanline_null;
+ else if (flags & ITER_NARROW)
+ iter->get_scanline = src_get_scanline_narrow;
+ else
+ iter->get_scanline = src_get_scanline_wide;
+}
+
+static uint32_t *
+dest_get_scanline_narrow (pixman_iter_t *iter, const uint32_t *mask)
+{
+ _pixman_image_get_scanline_32 (
+ iter->image, iter->x, iter->y, iter->width, iter->buffer, mask);
+
+ return iter->buffer;
+}
+
+static uint32_t *
+dest_get_scanline_wide (pixman_iter_t *iter, const uint32_t *mask)
+{
+ _pixman_image_get_scanline_64 (
+ iter->image, iter->x, iter->y, iter->width, iter->buffer, mask);
+
+ return iter->buffer;
+}
+
+static void
+write_back_narrow (pixman_iter_t *iter)
+{
+ _pixman_image_store_scanline_32 (
+ &iter->image->bits, iter->x, iter->y++, iter->width, iter->buffer);
+}
+
+static void
+write_back_wide (pixman_iter_t *iter)
+{
+ _pixman_image_store_scanline_64 (
+ &iter->image->bits, iter->x, iter->y++, iter->width, iter->buffer);
+}
+
+static void
+dest_iter_init (pixman_implementation_t *imp,
+ pixman_iter_t *iter,
+ pixman_image_t *image,
+ int x, int y, int width, int height,
+ uint8_t *buffer, iter_flags_t flags)
+{
+ iter->image = image;
+ iter->x = x;
+ iter->y = y;
+ iter->width = width;
+ iter->buffer = (uint32_t *)buffer;
+
+ if (flags & ITER_NARROW)
+ {
+ iter->get_scanline = dest_get_scanline_narrow;
+ iter->write_back = write_back_narrow;
+ }
+ else
+ {
+ iter->get_scanline = dest_get_scanline_wide;
+ iter->write_back = write_back_wide;
+ }
+}
+
#define SCANLINE_BUFFER_LENGTH 8192
static void
uint64_t stack_scanline_buffer[(SCANLINE_BUFFER_LENGTH * 3 + 7) / 8];
uint8_t *scanline_buffer = (uint8_t *) stack_scanline_buffer;
uint8_t *src_buffer, *mask_buffer, *dest_buffer;
- fetch_scanline_t fetch_src = NULL, fetch_mask = NULL, fetch_dest = NULL;
+ pixman_iter_t src_iter, mask_iter, dest_iter;
pixman_combine_32_func_t compose;
- store_scanline_t store;
- source_image_class_t src_class, mask_class;
pixman_bool_t component_alpha;
- uint32_t *bits;
- int32_t stride;
- int narrow, Bpp;
+ iter_flags_t narrow;
+ int Bpp;
int i;
- narrow =
- (src->common.flags & FAST_PATH_NARROW_FORMAT) &&
+ if ((src->common.flags & FAST_PATH_NARROW_FORMAT) &&
(!mask || mask->common.flags & FAST_PATH_NARROW_FORMAT) &&
- (dest->common.flags & FAST_PATH_NARROW_FORMAT);
- Bpp = narrow ? 4 : 8;
+ (dest->common.flags & FAST_PATH_NARROW_FORMAT))
+ {
+ narrow = ITER_NARROW;
+ Bpp = 4;
+ }
+ else
+ {
+ narrow = 0;
+ Bpp = 8;
+ }
if (width * Bpp > SCANLINE_BUFFER_LENGTH)
{
mask_buffer = src_buffer + width * Bpp;
dest_buffer = mask_buffer + width * Bpp;
- src_class = _pixman_image_classify (src,
- src_x, src_y,
- width, height);
-
- mask_class = SOURCE_IMAGE_CLASS_UNKNOWN;
-
- if (mask)
- {
- mask_class = _pixman_image_classify (mask,
- src_x, src_y,
- width, height);
- }
-
- if (op == PIXMAN_OP_CLEAR)
- fetch_src = NULL;
- else if (narrow)
- fetch_src = _pixman_image_get_scanline_32;
- else
- fetch_src = _pixman_image_get_scanline_64;
+ src_iter_init (imp->toplevel, &src_iter, src,
+ src_x, src_y, width, height,
+ src_buffer, narrow);
- if (!mask || op == PIXMAN_OP_CLEAR)
- fetch_mask = NULL;
- else if (narrow)
- fetch_mask = _pixman_image_get_scanline_32;
- else
- fetch_mask = _pixman_image_get_scanline_64;
+ src_iter_init (imp->toplevel, &mask_iter, mask,
+ mask_x, mask_y, width, height,
+ mask_buffer, narrow);
- if (op == PIXMAN_OP_CLEAR || op == PIXMAN_OP_SRC)
- fetch_dest = NULL;
- else if (narrow)
- fetch_dest = _pixman_image_get_scanline_32;
- else
- fetch_dest = _pixman_image_get_scanline_64;
-
- if (narrow)
- store = _pixman_image_store_scanline_32;
- else
- store = _pixman_image_store_scanline_64;
-
- /* Skip the store step and composite directly into the
- * destination if the output format of the compose func matches
- * the destination format.
- *
- * If the destination format is a8r8g8b8 then we can always do
- * this. If it is x8r8g8b8, then we can only do it if the
- * operator doesn't make use of destination alpha.
- */
- if ((dest->bits.format == PIXMAN_a8r8g8b8) ||
- (dest->bits.format == PIXMAN_x8r8g8b8 &&
- (op == PIXMAN_OP_OVER ||
- op == PIXMAN_OP_ADD ||
- op == PIXMAN_OP_SRC ||
- op == PIXMAN_OP_CLEAR ||
- op == PIXMAN_OP_IN_REVERSE ||
- op == PIXMAN_OP_OUT_REVERSE ||
- op == PIXMAN_OP_DST)))
- {
- if (narrow &&
- !dest->common.alpha_map &&
- !dest->bits.write_func)
- {
- store = NULL;
- }
- }
-
- if (!store)
- {
- bits = dest->bits.bits;
- stride = dest->bits.rowstride;
- }
- else
- {
- bits = NULL;
- stride = 0;
- }
+ dest_iter_init (imp->toplevel, &dest_iter, dest,
+ dest_x, dest_y, width, height,
+ dest_buffer, narrow);
component_alpha =
- fetch_src &&
- fetch_mask &&
mask &&
mask->common.type == BITS &&
mask->common.component_alpha &&
if (!compose)
return;
- if (!fetch_mask)
- mask_buffer = NULL;
-
for (i = 0; i < height; ++i)
{
- /* fill first half of scanline with source */
- if (fetch_src)
- {
- if (fetch_mask)
- {
- /* fetch mask before source so that fetching of
- source can be optimized */
- fetch_mask (mask, mask_x, mask_y + i,
- width, (void *)mask_buffer, 0);
-
- if (mask_class == SOURCE_IMAGE_CLASS_HORIZONTAL)
- fetch_mask = NULL;
- }
-
- if (src_class == SOURCE_IMAGE_CLASS_HORIZONTAL)
- {
- fetch_src (src, src_x, src_y + i,
- width, (void *)src_buffer, 0);
- fetch_src = NULL;
- }
- else
- {
- fetch_src (src, src_x, src_y + i,
- width, (void *)src_buffer, (void *)mask_buffer);
- }
- }
- else if (fetch_mask)
- {
- fetch_mask (mask, mask_x, mask_y + i,
- width, (void *)mask_buffer, 0);
- }
-
- if (store)
- {
- /* fill dest into second half of scanline */
- if (fetch_dest)
- {
- fetch_dest (dest, dest_x, dest_y + i,
- width, (void *)dest_buffer, 0);
- }
-
- /* blend */
- compose (imp->toplevel, op,
- (void *)dest_buffer,
- (void *)src_buffer,
- (void *)mask_buffer,
- width);
-
- /* write back */
- store (&(dest->bits), dest_x, dest_y + i, width,
- (void *)dest_buffer);
- }
- else
- {
- /* blend */
- compose (imp->toplevel, op,
- bits + (dest_y + i) * stride + dest_x,
- (void *)src_buffer, (void *)mask_buffer, width);
- }
+ uint32_t *s, *m, *d;
+
+ m = mask_iter.get_scanline (&mask_iter, NULL);
+ s = src_iter.get_scanline (&src_iter, m);
+ d = dest_iter.get_scanline (&dest_iter, NULL);
+
+ compose (imp->toplevel, op, d, s, m, width);
+
+ dest_iter.write_back (&dest_iter);
}
if (scanline_buffer != (uint8_t *) stack_scanline_buffer)