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st/dri2: Implement DRI2bufferDamageExtension

Browse source 
Add a pipe_screen->set_damage_region() hook to propagate
set-damage-region requests to the driver, it's then up to the driver to
decide what to do with this piece of information.

If the hook is left unassigned, the buffer-damage extension is
considered unsupported.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Qiang Yu <yuq825@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This commit is contained in:
Daniel Stone 2019-08-12 12:07:07 +02:00 • committed by Boris Brezillon
parent a4a8ebe156
commit 492ffbed63
2 changed files with 52 additions and 0 deletions
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17
src/gallium/include/pipe/p_screen.h
View file

@ -474,6 +474,23 @@ struct pipe_screen {
bool (*is_parallel_shader_compilation_finished)(struct pipe_screen *screen,
void *shader,
unsigned shader_type);
/**
* Set the damage region (called when KHR_partial_update() is invoked).
* This function is passed an array of rectangles encoding the damage area.
* rects are using the bottom-left origin convention.
* nrects = 0 means 'reset the damage region'. What 'reset' implies is HW
* specific. For tile-based renderers, the damage extent is typically set
* to cover the whole resource with no damage rect (or a 0-size damage
* rect). This way, the existing resource content is reloaded into the
* local tile buffer for every tile thus making partial tile update
* possible. For HW operating in immediate mode, this reset operation is
* likely to be a NOOP.
*/
void (*set_damage_region)(struct pipe_screen *screen,
struct pipe_resource *resource,
unsigned int nrects,
const struct pipe_box *rects);
};

35
src/gallium/state_trackers/dri/dri2.c
View file

@ -1847,6 +1847,36 @@ static const __DRI2interopExtension dri2InteropExtension = {
.export_object = dri2_interop_export_object
};
/**
* \brief the DRI2bufferDamageExtension set_damage_region method
*/
static void
dri2_set_damage_region(__DRIdrawable *dPriv, unsigned int nrects, int *rects)
{
struct dri_drawable *drawable = dri_drawable(dPriv);
struct pipe_resource *resource = drawable->textures[ST_ATTACHMENT_BACK_LEFT];
struct pipe_screen *screen = resource->screen;
struct pipe_box *boxes = NULL;
if (nrects) {
boxes = CALLOC(nrects, sizeof(*boxes));
assert(boxes);
for (unsigned int i = 0; i < nrects; i++) {
int *rect = &rects[i * 4];
u_box_2d(rect[0], rect[1], rect[2], rect[3], &boxes[i]);
}
}
screen->set_damage_region(screen, resource, nrects, boxes);
FREE(boxes);
}
static __DRI2bufferDamageExtension dri2BufferDamageExtension = {
.base = { __DRI2_BUFFER_DAMAGE, 1 },
};
/**
* \brief the DRI2ConfigQueryExtension configQueryb method
*/
@ -1948,6 +1978,7 @@ static const __DRIextension *dri_screen_extensions[] = {
&dri2GalliumConfigQueryExtension.base,
&dri2ThrottleExtension.base,
&dri2FenceExtension.base,
&dri2BufferDamageExtension.base,
&dri2InteropExtension.base,
&dri2NoErrorExtension.base,
&driBlobExtension.base,
@ -1963,6 +1994,7 @@ static const __DRIextension *dri_robust_screen_extensions[] = {
&dri2ThrottleExtension.base,
&dri2FenceExtension.base,
&dri2InteropExtension.base,
&dri2BufferDamageExtension.base,
&dri2Robustness.base,
&dri2NoErrorExtension.base,
&driBlobExtension.base,
@ -2025,6 +2057,9 @@ dri2_init_screen(__DRIscreen * sPriv)
}
}
if (pscreen->set_damage_region)
dri2BufferDamageExtension.set_damage_region = dri2_set_damage_region;
if (pscreen->get_param(pscreen, PIPE_CAP_DEVICE_RESET_STATUS_QUERY)) {
sPriv->extensions = dri_robust_screen_extensions;
screen->has_reset_status_query = true;