diff options
Diffstat (limited to 'src/gallium/drivers/panfrost/pan_resource.c')
| -rw-r--r-- | src/gallium/drivers/panfrost/pan_resource.c | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/src/gallium/drivers/panfrost/pan_resource.c b/src/gallium/drivers/panfrost/pan_resource.c index f74a39555b4..1f5b23145cf 100644 --- a/src/gallium/drivers/panfrost/pan_resource.c +++ b/src/gallium/drivers/panfrost/pan_resource.c @@ -403,6 +403,84 @@ panfrost_resource_create_bo(struct panfrost_screen *screen, struct panfrost_reso pres->bo = panfrost_drm_create_bo(screen, bo_size, PAN_ALLOCATE_DELAY_MMAP); } +static void +panfrost_resource_reset_damage(struct panfrost_resource *pres) +{ + /* We set the damage extent to the full resource size but keep the + * damage box empty so that the FB content is reloaded by default. + */ + memset(&pres->damage, 0, sizeof(pres->damage)); + pres->damage.extent.maxx = pres->base.width0; + pres->damage.extent.maxy = pres->base.height0; +} + +void +panfrost_resource_set_damage_region(struct pipe_screen *screen, + struct pipe_resource *res, + unsigned int nrects, + const struct pipe_box *rects) +{ + struct panfrost_resource *pres = pan_resource(res); + struct pipe_box *damage_rect = &pres->damage.biggest_rect; + struct pipe_scissor_state *damage_extent = &pres->damage.extent; + unsigned int i; + + if (!nrects) { + panfrost_resource_reset_damage(pres); + return; + } + + /* We keep track of 2 different things here: + * 1 the damage extent: the quad including all damage regions. Will be + * used restrict the rendering area + * 2 the biggest damage rectangle: when there are more than one damage + * rect we keep the biggest one and will generate 4 wallpaper quads + * out of it (see panfrost_draw_wallpaper() for more details). We + * might want to do something smarter at some point. + * + * _________________________________ + * | | + * | _________________________ | + * | | rect1| _________| | + * | |______|_____ | rect 3: | | + * | | | rect2 | | biggest | | + * | | |_______| | rect | | + * | |_______________|_________| | + * | damage extent | + * |_______________________________| + * resource + */ + memset(&pres->damage, 0, sizeof(pres->damage)); + damage_extent->minx = 0xffff; + damage_extent->miny = 0xffff; + for (i = 0; i < nrects; i++) { + int x = rects[i].x, w = rects[i].width, h = rects[i].height; + int y = res->height0 - (rects[i].y + h); + + /* Clamp x,y,w,h to prevent negative values. */ + if (x < 0) { + h += x; + x = 0; + } + if (y < 0) { + w += y; + y = 0; + } + w = MAX2(w, 0); + h = MAX2(h, 0); + + if (damage_rect->width * damage_rect->height < w * h) + u_box_2d(x, y, w, h, damage_rect); + + damage_extent->minx = MIN2(damage_extent->minx, x); + damage_extent->miny = MIN2(damage_extent->miny, y); + damage_extent->maxx = MAX2(damage_extent->maxx, + MIN2(x + w, res->width0)); + damage_extent->maxy = MAX2(damage_extent->maxy, + MIN2(y + h, res->height0)); + } +} + static struct pipe_resource * panfrost_resource_create(struct pipe_screen *screen, const struct pipe_resource *template) @@ -437,6 +515,8 @@ panfrost_resource_create(struct pipe_screen *screen, util_range_init(&so->valid_buffer_range); panfrost_resource_create_bo(pscreen, so); + panfrost_resource_reset_damage(so); + return (struct pipe_resource *)so; } |