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simple-damage: Offset drawing co-ordinates not buffer start

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We've been setting up the viewport by moving the start pointer of the
draw buffer, but later when we want to post damage in buffer co-ordinates
we'll need to keep track of the x,y offsets anyway.

Signed-off-by: Derek Foreman <derekf@osg.samsung.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
dev
Derek Foreman 10 years ago
parent 1909c10825
commit 29b846eaa6
1 changed files with 34 additions and 24 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 58
      clients/simple-damage.c

58
clients/simple-damage.c
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@ -454,8 +454,8 @@ redraw(void *data, struct wl_callback *callback, uint32_t time)
{ {
struct window *window = data; struct window *window = data;
struct buffer *buffer; struct buffer *buffer;
int off_x, off_y, bwidth, bheight, bborder, bpitch, bradius; int off_x = 0, off_y = 0;
uint32_t *buffer_data; int bwidth, bheight, bborder, bpitch, bradius;
float bx, by; float bx, by;
buffer = window_next_buffer(window); buffer = window_next_buffer(window);
@ -494,8 +494,8 @@ redraw(void *data, struct wl_callback *callback, uint32_t time)
bborder = window->border * window->scale; bborder = window->border * window->scale;
bradius = window->ball.radius * window->scale; bradius = window->ball.radius * window->scale;
buffer_data = buffer->shm_data;
if (window->viewport) { if (window->viewport) {
int tx, ty;
/* Fill the whole thing with red to detect viewport errors */ /* Fill the whole thing with red to detect viewport errors */
paint_box(buffer->shm_data, bpitch, 0, 0, bwidth, bheight, paint_box(buffer->shm_data, bpitch, 0, 0, bwidth, bheight,
0xffff0000); 0xffff0000);
@ -508,35 +508,41 @@ redraw(void *data, struct wl_callback *callback, uint32_t time)
bheight /= 2; bheight /= 2;
/* Offset the drawing region */ /* Offset the drawing region */
off_x = (window->width / 3) * window->scale; tx = (window->width / 3) * window->scale;
off_y = (window->height / 5) * window->scale; ty = (window->height / 5) * window->scale;
switch (window->transform) { switch (window->transform) {
default: default:
case WL_OUTPUT_TRANSFORM_NORMAL: case WL_OUTPUT_TRANSFORM_NORMAL:
buffer_data += off_y * bpitch + off_x; off_y = ty;
off_x = tx;
break; break;
case WL_OUTPUT_TRANSFORM_90: case WL_OUTPUT_TRANSFORM_90:
buffer_data += off_x * bpitch + (bwidth - off_y); off_y = tx;
off_x = bwidth - ty;
break; break;
case WL_OUTPUT_TRANSFORM_180: case WL_OUTPUT_TRANSFORM_180:
buffer_data += (bheight - off_y) * bpitch + off_y = bheight - ty;
(bwidth - off_x); off_x = bwidth - tx;
break; break;
case WL_OUTPUT_TRANSFORM_270: case WL_OUTPUT_TRANSFORM_270:
buffer_data += (bheight - off_x) * bpitch + off_y; off_y = bheight - tx;
off_x = ty;
break; break;
case WL_OUTPUT_TRANSFORM_FLIPPED: case WL_OUTPUT_TRANSFORM_FLIPPED:
buffer_data += off_y * bpitch + (bwidth - off_x); off_y = ty;
off_x = bwidth - tx;
break; break;
case WL_OUTPUT_TRANSFORM_FLIPPED_90: case WL_OUTPUT_TRANSFORM_FLIPPED_90:
buffer_data += (bheight - off_x) * bpitch + off_y = bheight - tx;
(bwidth - off_y); off_x = bwidth - ty;
break; break;
case WL_OUTPUT_TRANSFORM_FLIPPED_180: case WL_OUTPUT_TRANSFORM_FLIPPED_180:
buffer_data += (bheight - off_y) * bpitch + off_x; off_y = bheight - ty;
off_x = tx;
break; break;
case WL_OUTPUT_TRANSFORM_FLIPPED_270: case WL_OUTPUT_TRANSFORM_FLIPPED_270:
buffer_data += off_x * bpitch + off_y; off_y = tx;
off_x = ty;
break; break;
} }
wl_viewport_set_source(window->viewport, wl_viewport_set_source(window->viewport,
@ -547,15 +553,17 @@ redraw(void *data, struct wl_callback *callback, uint32_t time)
} }
/* Paint the border */ /* Paint the border */
paint_box(buffer_data, bpitch, 0, 0, bwidth, bborder, 0xffffffff); paint_box(buffer->shm_data, bpitch, off_x, off_y,
paint_box(buffer_data, bpitch, 0, 0, bborder, bheight, 0xffffffff); bwidth, bborder, 0xffffffff);
paint_box(buffer_data, bpitch, paint_box(buffer->shm_data, bpitch, off_x, off_y,
bwidth - bborder, 0, bborder, bheight, 0xffffffff); bborder, bheight, 0xffffffff);
paint_box(buffer_data, bpitch, paint_box(buffer->shm_data, bpitch, off_x + bwidth - bborder, off_y,
0, bheight - bborder, bwidth, bborder, 0xffffffff); bborder, bheight, 0xffffffff);
paint_box(buffer->shm_data, bpitch, off_x, off_y + bheight - bborder,
bwidth, bborder, 0xffffffff);
/* fill with translucent */ /* fill with translucent */
paint_box(buffer_data, bpitch, bborder, bborder, paint_box(buffer->shm_data, bpitch, off_x + bborder, off_y + bborder,
bwidth - 2 * bborder, bheight - 2 * bborder, 0x80000000); bwidth - 2 * bborder, bheight - 2 * bborder, 0x80000000);
/* Damage where the ball was */ /* Damage where the ball was */
@ -570,7 +578,8 @@ redraw(void *data, struct wl_callback *callback, uint32_t time)
window_get_transformed_ball(window, &bx, &by); window_get_transformed_ball(window, &bx, &by);
/* Paint the ball */ /* Paint the ball */
paint_circle(buffer_data, bpitch, bx, by, bradius, 0xff00ff00); paint_circle(buffer->shm_data, bpitch, off_x + bx, off_y + by,
bradius, 0xff00ff00);
if (print_debug) { if (print_debug) {
printf("Ball now located at (%f, %f)\n", printf("Ball now located at (%f, %f)\n",
@ -580,7 +589,8 @@ redraw(void *data, struct wl_callback *callback, uint32_t time)
bradius); bradius);
printf("Buffer damage rectangle: (%d, %d) @ %dx%d\n", printf("Buffer damage rectangle: (%d, %d) @ %dx%d\n",
(int)(bx - bradius), (int)(by - bradius), (int)(bx - bradius) + off_x,
(int)(by - bradius) + off_y,
bradius * 2 + 1, bradius * 2 + 1); bradius * 2 + 1, bradius * 2 + 1);
} }

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