maride/guacamole-spice-protocol
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GUAC-675: Optimize output of rect.

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This commit is contained in:
Michael Jumper 2014-05-12 01:45:55 -07:00
parent c0b955fab0
commit 573f524dee
1 changed files with 33 additions and 3 deletions
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32
src/common/guac_surface.c
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@ -329,6 +329,11 @@ static void __guac_common_surface_rect(guac_common_surface* dst, guac_common_rec
uint32_t color = 0xFF000000 | (red << 16) | (green << 8) | blue;
int min_x = rect->width - 1;
int min_y = rect->height - 1;
int max_x = 0;
int max_y = 0;
dst_stride = dst->stride;
dst_buffer = dst->buffer + (dst_stride * rect->y) + (4 * rect->x);
@ -339,7 +344,17 @@ static void __guac_common_surface_rect(guac_common_surface* dst, guac_common_rec
/* Set row */
for (x=0; x < rect->width; x++) {
uint32_t old_color = *dst_current;
if (old_color != color) {
if (x < min_x) min_x = x;
if (y < min_y) min_y = y;
if (x > max_x) max_x = x;
if (y > max_y) max_y = y;
*dst_current = color;
}
dst_current++;
}
@ -348,6 +363,18 @@ static void __guac_common_surface_rect(guac_common_surface* dst, guac_common_rec
}
/* Restrict destination rect to only updated pixels */
if (max_x >= min_x && max_y >= min_y) {
rect->x += min_x;
rect->y += min_y;
rect->width = max_x - min_x + 1;
rect->height = max_y - min_y + 1;
}
else {
rect->width = 0;
rect->height = 0;
}
}
/**
@ -418,6 +445,7 @@ static void __guac_common_surface_put(unsigned char* src_buffer, int src_stride,
}
/* Restrict destination rect to only updated pixels */
if (max_x >= min_x && max_y >= min_y) {
rect->x += min_x;
rect->y += min_y;
@ -668,7 +696,7 @@ void guac_common_surface_draw(guac_common_surface* surface, int x, int y, cairo_
/* Update backing surface */
__guac_common_surface_put(buffer, stride, sx, sy, surface, &rect, format != CAIRO_FORMAT_ARGB32);
if (w <= 0 || h <= 0)
if (rect.width <= 0 || rect.height <= 0)
return;
/* Flush if not combining */
@ -793,6 +821,8 @@ void guac_common_surface_rect(guac_common_surface* surface,
/* Update backing surface */
__guac_common_surface_rect(surface, &rect, red, green, blue);
if (rect.width <= 0 || rect.height <= 0)
return;
/* Defer if combining */
if (__guac_common_should_combine(surface, &rect, 1))