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loader/dri3: Avoid resizing existing buffers in dri3_find_back_alloc

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Resize only in loader_dri3_get_buffers(),
where the dri driver has a chance to immediately update the viewport.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
This commit is contained in:
Thomas Hellstrom 2017-09-14 12:39:18 +02:00
parent 622f5e1d9b
commit 1b8e0bed69
1 changed files with 30 additions and 9 deletions
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39
src/loader/loader_dri3_helper.c
View file

@ -1639,6 +1639,7 @@ loader_dri3_close_screen(__DRIscreen *dri_screen)
* Find a potentially new back buffer, and if it's not been allocated yet and
* in addition needs initializing, then try to allocate and initialize it.
*/
#include <stdio.h>
static struct loader_dri3_buffer *
dri3_find_back_alloc(struct loader_dri3_drawable *draw)
{
@ -1646,16 +1647,36 @@ dri3_find_back_alloc(struct loader_dri3_drawable *draw)
int id;
id = dri3_find_back(draw);
back = (id >= 0) ? draw->buffers[id] : NULL;
if (id < 0)
return NULL;
if (back || (id >= 0 && draw->back_format != __DRI_IMAGE_FORMAT_NONE)) {
if (dri3_update_drawable(draw->dri_drawable, draw)) {
(void) dri3_get_buffer(draw->dri_drawable,
draw->back_format,
loader_dri3_buffer_back,
draw);
back = (id >= 0) ? draw->buffers[id] : NULL;
}
back = draw->buffers[id];
/* Allocate a new back if we haven't got one */
if (!back && draw->back_format != __DRI_IMAGE_FORMAT_NONE &&
dri3_update_drawable(draw->dri_drawable, draw))
back = dri3_alloc_render_buffer(draw, draw->back_format,
draw->width, draw->height, draw->depth);
if (!back)
return NULL;
draw->buffers[id] = back;
/* If necessary, prefill the back with data according to swap_method mode. */
if (draw->cur_blit_source != -1 &&
draw->buffers[draw->cur_blit_source] &&
back != draw->buffers[draw->cur_blit_source]) {
struct loader_dri3_buffer *source = draw->buffers[draw->cur_blit_source];
dri3_fence_await(draw->conn, draw, source);
dri3_fence_await(draw->conn, draw, back);
(void) loader_dri3_blit_image(draw,
back->image,
source->image,
0, 0, draw->width, draw->height,
0, 0, 0);
back->last_swap = source->last_swap;
draw->cur_blit_source = -1;
}
return back;