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st/dri: Hook up throttling based on the drm driver_descriptor configuration

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Hooks up throttling if there is a configuration function present and
it indicates that throttling is desired.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
This commit is contained in:
Thomas Hellstrom 2011-10-12 11:00:12 +02:00
parent ec7d5b8c02
commit bde2fc5a71
3 changed files with 27 additions and 2 deletions
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4
src/gallium/state_trackers/dri/common/dri_drawable.c
View file

@ -137,7 +137,9 @@ dri_create_buffer(__DRIscreen * sPriv,
drawable->screen = screen;
drawable->sPriv = sPriv;
drawable->dPriv = dPriv;
drawable->desired_fences = 2;
drawable->desired_fences = screen->default_throttle_frames;
if (drawable->desired_fences > DRI_SWAP_FENCES_MAX)
drawable->desired_fences = DRI_SWAP_FENCES_MAX;
dPriv->driverPrivate = (void *)drawable;
p_atomic_set(&drawable->base.stamp, 1);

1
src/gallium/state_trackers/dri/common/dri_screen.h
View file

@ -54,6 +54,7 @@ struct dri_screen
/* dri */
__DRIscreen *sPriv;
int default_throttle_frames;
/**
* Configuration cache with default values for all contexts

24
src/gallium/state_trackers/dri/drm/dri2.c
View file

@ -623,6 +623,19 @@ static const __DRIextension *dri_screen_extensions[] = {
NULL
};
static const __DRIextension *dri_screen_extensions_throttle[] = {
&driReadDrawableExtension,
&driCopySubBufferExtension.base,
&driSwapControlExtension.base,
&driMediaStreamCounterExtension.base,
&driTexBufferExtension.base,
&dri2FlushExtension.base,
&dri2ImageExtension.base,
&dri2ConfigQueryExtension.base,
&dri2ThrottleExtension.base,
NULL
};
/**
* This is the driver specific part of the createNewScreen entry point.
*
@ -634,6 +647,7 @@ dri2_init_screen(__DRIscreen * sPriv)
const __DRIconfig **configs;
struct dri_screen *screen;
struct pipe_screen *pscreen;
const struct drm_conf_ret *throttle_ret = NULL;
screen = CALLOC_STRUCT(dri_screen);
if (!screen)
@ -643,9 +657,17 @@ dri2_init_screen(__DRIscreen * sPriv)
screen->fd = sPriv->fd;
sPriv->private = (void *)screen;
sPriv->extensions = dri_screen_extensions;
pscreen = driver_descriptor.create_screen(screen->fd);
if (driver_descriptor.configuration)
throttle_ret = driver_descriptor.configuration(DRM_CONF_THROTTLE);
if (throttle_ret && throttle_ret->val.val_int != -1) {
sPriv->extensions = dri_screen_extensions_throttle;
screen->default_throttle_frames = throttle_ret->val.val_int;
} else
sPriv->extensions = dri_screen_extensions;
/* dri_init_screen_helper checks pscreen for us */
configs = dri_init_screen_helper(screen, pscreen, 32);