/*
* Step across a small sample grid gap
*/
-#define RENDER_EDGE_STEP_SMALL(edge) { \
- edge->x += edge->stepx_small; \
- edge->e += edge->dx_small; \
- if (edge->e > 0) \
- { \
- edge->e -= edge->dy; \
- edge->x += edge->signdx; \
- } \
-}
+#define RENDER_EDGE_STEP_SMALL(edge) \
+ { \
+ edge->x += edge->stepx_small; \
+ edge->e += edge->dx_small; \
+ if (edge->e > 0) \
+ { \
+ edge->e -= edge->dy; \
+ edge->x += edge->signdx; \
+ } \
+ }
/*
* Step across a large sample grid gap
*/
-#define RENDER_EDGE_STEP_BIG(edge) { \
- edge->x += edge->stepx_big; \
- edge->e += edge->dx_big; \
- if (edge->e > 0) \
- { \
- edge->e -= edge->dy; \
- edge->x += edge->signdx; \
- } \
-}
+#define RENDER_EDGE_STEP_BIG(edge) \
+ { \
+ edge->x += edge->stepx_big; \
+ edge->e += edge->dx_big; \
+ if (edge->e > 0) \
+ { \
+ edge->e -= edge->dy; \
+ edge->x += edge->signdx; \
+ } \
+ }
#ifdef PIXMAN_FB_ACCESSORS
#define PIXMAN_RASTERIZE_EDGES pixman_rasterize_edges_accessors
* 4 bit alpha
*/
-#define N_BITS 4
-#define RASTERIZE_EDGES rasterize_edges_4
+#define N_BITS 4
+#define RASTERIZE_EDGES rasterize_edges_4
#ifndef WORDS_BIG_ENDIAN
-#define SHIFT_4(o) ((o) << 2)
+#define SHIFT_4(o) ((o) << 2)
#else
-#define SHIFT_4(o) ((1-(o)) << 2)
+#define SHIFT_4(o) ((1 - (o)) << 2)
#endif
-#define GET_4(x,o) (((x) >> SHIFT_4(o)) & 0xf)
-#define PUT_4(x,o,v) (((x) & ~(0xf << SHIFT_4(o))) | (((v) & 0xf) << SHIFT_4(o)))
+#define GET_4(x, o) (((x) >> SHIFT_4 (o)) & 0xf)
+#define PUT_4(x, o, v) \
+ (((x) & ~(0xf << SHIFT_4 (o))) | (((v) & 0xf) << SHIFT_4 (o)))
-#define DEFINE_ALPHA(line,x) \
- uint8_t *__ap = (uint8_t *) line + ((x) >> 1); \
- int __ao = (x) & 1
+#define DEFINE_ALPHA(line, x) \
+ uint8_t *__ap = (uint8_t *) line + ((x) >> 1); \
+ int __ao = (x) & 1
-#define STEP_ALPHA ((__ap += __ao), (__ao ^= 1))
+#define STEP_ALPHA ((__ap += __ao), (__ao ^= 1))
-#define ADD_ALPHA(a) { \
- uint8_t __o = READ(image, __ap); \
- uint8_t __a = (a) + GET_4(__o, __ao); \
- WRITE(image, __ap, PUT_4 (__o, __ao, __a | (0 - ((__a) >> 4)))); \
+#define ADD_ALPHA(a) \
+ { \
+ uint8_t __o = READ (image, __ap); \
+ uint8_t __a = (a) + GET_4 (__o, __ao); \
+ WRITE (image, __ap, PUT_4 (__o, __ao, __a | (0 - ((__a) >> 4)))); \
}
#include "pixman-edge-imp.h"
*/
#define N_BITS 1
-#define RASTERIZE_EDGES rasterize_edges_1
+#define RASTERIZE_EDGES rasterize_edges_1
#include "pixman-edge-imp.h"
* 8 bit alpha
*/
-static inline uint8_t
+static force_inline uint8_t
clip255 (int x)
{
- if (x > 255) return 255;
+ if (x > 255)
+ return 255;
+
return x;
}
-#define ADD_SATURATE_8(buf,val,length) \
- do { \
- int i__ = (length); \
- uint8_t *buf__ = (buf); \
- int val__ = (val); \
- \
- while (i__--) \
- { \
- WRITE(image, (buf__), clip255 (READ(image, (buf__)) + (val__))); \
- (buf__)++; \
- } \
+#define ADD_SATURATE_8(buf, val, length) \
+ do \
+ { \
+ int i__ = (length); \
+ uint8_t *buf__ = (buf); \
+ int val__ = (val); \
+ \
+ while (i__--) \
+ { \
+ WRITE (image, (buf__), clip255 (READ (image, (buf__)) + (val__))); \
+ (buf__)++; \
+ } \
} while (0)
/*
* fill_start fill_end
*/
static void
-rasterize_edges_8 (pixman_image_t *image,
- pixman_edge_t *l,
- pixman_edge_t *r,
- pixman_fixed_t t,
- pixman_fixed_t b)
+rasterize_edges_8 (pixman_image_t *image,
+ pixman_edge_t * l,
+ pixman_edge_t * r,
+ pixman_fixed_t t,
+ pixman_fixed_t b)
{
- pixman_fixed_t y = t;
+ pixman_fixed_t y = t;
uint32_t *line;
int fill_start = -1, fill_end = -1;
int fill_size = 0;
for (;;)
{
uint8_t *ap = (uint8_t *) line;
- pixman_fixed_t lx, rx;
- int lxi, rxi;
+ pixman_fixed_t lx, rx;
+ int lxi, rxi;
- /* clip X */
- lx = l->x;
- if (lx < 0)
+ /* clip X */
+ lx = l->x;
+ if (lx < 0)
lx = 0;
- rx = r->x;
- if (pixman_fixed_to_int (rx) >= width)
+
+ rx = r->x;
+
+ if (pixman_fixed_to_int (rx) >= width)
+ {
/* Use the last pixel of the scanline, covered 100%.
* We can't use the first pixel following the scanline,
* because accessing it could result in a buffer overrun.
*/
rx = pixman_int_to_fixed (width) - 1;
+ }
- /* Skip empty (or backwards) sections */
- if (rx > lx)
- {
+ /* Skip empty (or backwards) sections */
+ if (rx > lx)
+ {
int lxs, rxs;
- /* Find pixel bounds for span. */
- lxi = pixman_fixed_to_int (lx);
- rxi = pixman_fixed_to_int (rx);
+ /* Find pixel bounds for span. */
+ lxi = pixman_fixed_to_int (lx);
+ rxi = pixman_fixed_to_int (rx);
/* Sample coverage for edge pixels */
lxs = RENDER_SAMPLES_X (lx, 8);
rxs = RENDER_SAMPLES_X (rx, 8);
/* Add coverage across row */
- if (lxi == rxi)
- {
- WRITE(image, ap +lxi, clip255 (READ(image, ap + lxi) + rxs - lxs));
+ if (lxi == rxi)
+ {
+ WRITE (image, ap + lxi,
+ clip255 (READ (image, ap + lxi) + rxs - lxs));
}
- else
- {
- WRITE(image, ap + lxi, clip255 (READ(image, ap + lxi) + N_X_FRAC(8) - lxs));
+ else
+ {
+ WRITE (image, ap + lxi,
+ clip255 (READ (image, ap + lxi) + N_X_FRAC (8) - lxs));
- /* Move forward so that lxi/rxi is the pixel span */
- lxi++;
+ /* Move forward so that lxi/rxi is the pixel span */
+ lxi++;
- /* Don't bother trying to optimize the fill unless
+ /* Don't bother trying to optimize the fill unless
* the span is longer than 4 pixels. */
- if (rxi - lxi > 4)
- {
- if (fill_start < 0)
- {
- fill_start = lxi;
- fill_end = rxi;
- fill_size++;
+ if (rxi - lxi > 4)
+ {
+ if (fill_start < 0)
+ {
+ fill_start = lxi;
+ fill_end = rxi;
+ fill_size++;
}
- else
- {
- if (lxi >= fill_end || rxi < fill_start)
- {
- /* We're beyond what we saved, just fill it */
- ADD_SATURATE_8 (ap + fill_start,
- fill_size * N_X_FRAC(8),
- fill_end - fill_start);
- fill_start = lxi;
- fill_end = rxi;
- fill_size = 1;
+ else
+ {
+ if (lxi >= fill_end || rxi < fill_start)
+ {
+ /* We're beyond what we saved, just fill it */
+ ADD_SATURATE_8 (ap + fill_start,
+ fill_size * N_X_FRAC (8),
+ fill_end - fill_start);
+ fill_start = lxi;
+ fill_end = rxi;
+ fill_size = 1;
}
- else
- {
- /* Update fill_start */
- if (lxi > fill_start)
- {
- ADD_SATURATE_8 (ap + fill_start,
- fill_size * N_X_FRAC(8),
- lxi - fill_start);
- fill_start = lxi;
+ else
+ {
+ /* Update fill_start */
+ if (lxi > fill_start)
+ {
+ ADD_SATURATE_8 (ap + fill_start,
+ fill_size * N_X_FRAC (8),
+ lxi - fill_start);
+ fill_start = lxi;
}
- else if (lxi < fill_start)
- {
- ADD_SATURATE_8 (ap + lxi, N_X_FRAC(8),
- fill_start - lxi);
+ else if (lxi < fill_start)
+ {
+ ADD_SATURATE_8 (ap + lxi, N_X_FRAC (8),
+ fill_start - lxi);
}
- /* Update fill_end */
- if (rxi < fill_end)
- {
- ADD_SATURATE_8 (ap + rxi,
- fill_size * N_X_FRAC(8),
- fill_end - rxi);
- fill_end = rxi;
+ /* Update fill_end */
+ if (rxi < fill_end)
+ {
+ ADD_SATURATE_8 (ap + rxi,
+ fill_size * N_X_FRAC (8),
+ fill_end - rxi);
+ fill_end = rxi;
}
- else if (fill_end < rxi)
- {
- ADD_SATURATE_8 (ap + fill_end,
- N_X_FRAC(8),
- rxi - fill_end);
+ else if (fill_end < rxi)
+ {
+ ADD_SATURATE_8 (ap + fill_end,
+ N_X_FRAC (8),
+ rxi - fill_end);
}
- fill_size++;
+ fill_size++;
}
}
}
- else
- {
- ADD_SATURATE_8 (ap + lxi, N_X_FRAC(8), rxi - lxi);
+ else
+ {
+ ADD_SATURATE_8 (ap + lxi, N_X_FRAC (8), rxi - lxi);
}
- WRITE(image, ap + rxi, clip255 (READ(image, ap + rxi) + rxs));
+ WRITE (image, ap + rxi, clip255 (READ (image, ap + rxi) + rxs));
}
}
- if (y == b) {
+ if (y == b)
+ {
/* We're done, make sure we clean up any remaining fill. */
- if (fill_start != fill_end) {
- if (fill_size == N_Y_FRAC(8))
- {
- MEMSET_WRAPPED (image, ap + fill_start, 0xff, fill_end - fill_start);
+ if (fill_start != fill_end)
+ {
+ if (fill_size == N_Y_FRAC (8))
+ {
+ MEMSET_WRAPPED (image, ap + fill_start,
+ 0xff, fill_end - fill_start);
}
- else
- {
- ADD_SATURATE_8 (ap + fill_start, fill_size * N_X_FRAC(8),
- fill_end - fill_start);
+ else
+ {
+ ADD_SATURATE_8 (ap + fill_start, fill_size * N_X_FRAC (8),
+ fill_end - fill_start);
}
- }
- break;
- }
+ }
+ break;
+ }
- if (pixman_fixed_frac (y) != Y_FRAC_LAST(8))
- {
- RENDER_EDGE_STEP_SMALL (l);
- RENDER_EDGE_STEP_SMALL (r);
- y += STEP_Y_SMALL(8);
+ if (pixman_fixed_frac (y) != Y_FRAC_LAST (8))
+ {
+ RENDER_EDGE_STEP_SMALL (l);
+ RENDER_EDGE_STEP_SMALL (r);
+ y += STEP_Y_SMALL (8);
}
- else
- {
- RENDER_EDGE_STEP_BIG (l);
- RENDER_EDGE_STEP_BIG (r);
- y += STEP_Y_BIG(8);
+ else
+ {
+ RENDER_EDGE_STEP_BIG (l);
+ RENDER_EDGE_STEP_BIG (r);
+ y += STEP_Y_BIG (8);
if (fill_start != fill_end)
{
- if (fill_size == N_Y_FRAC(8))
- {
- MEMSET_WRAPPED (image, ap + fill_start, 0xff, fill_end - fill_start);
+ if (fill_size == N_Y_FRAC (8))
+ {
+ MEMSET_WRAPPED (image, ap + fill_start,
+ 0xff, fill_end - fill_start);
}
- else
- {
- ADD_SATURATE_8 (ap + fill_start, fill_size * N_X_FRAC(8),
- fill_end - fill_start);
+ else
+ {
+ ADD_SATURATE_8 (ap + fill_start, fill_size * N_X_FRAC (8),
+ fill_end - fill_start);
}
+
fill_start = fill_end = -1;
fill_size = 0;
- }
- line += stride;
+ }
+
+ line += stride;
}
}
}
#endif
void
PIXMAN_RASTERIZE_EDGES (pixman_image_t *image,
- pixman_edge_t *l,
- pixman_edge_t *r,
- pixman_fixed_t t,
- pixman_fixed_t b)
+ pixman_edge_t * l,
+ pixman_edge_t * r,
+ pixman_fixed_t t,
+ pixman_fixed_t b)
{
switch (PIXMAN_FORMAT_BPP (image->bits.format))
{
case 1:
rasterize_edges_1 (image, l, r, t, b);
break;
+
case 4:
rasterize_edges_4 (image, l, r, t, b);
break;
+
case 8:
rasterize_edges_8 (image, l, r, t, b);
break;
PIXMAN_EXPORT void
pixman_rasterize_edges (pixman_image_t *image,
- pixman_edge_t *l,
- pixman_edge_t *r,
- pixman_fixed_t t,
- pixman_fixed_t b)
+ pixman_edge_t * l,
+ pixman_edge_t * r,
+ pixman_fixed_t t,
+ pixman_fixed_t b)
{
- if (image->common.read_func || image->common.write_func)
+ if (image->common.read_func || image->common.write_func)
pixman_rasterize_edges_accessors (image, l, r, t, b);
else
pixman_rasterize_edges_no_accessors (image, l, r, t, b);
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