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DRI2/GLX: check for vblank_mode in DRI2 GLX code

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Re-add support for the vblank_mode environment and configuration
variable.  Useful for benchmarking and app control.
This commit is contained in:
Jesse Barnes
2010-04-22 12:49:03 -07:00
parent 234286c0f8
commit 45e2b51c85
2 changed files with 50 additions and 2 deletions
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41
src/glx/dri2_glx.c
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@@ -47,7 +47,12 @@
#include "xf86drm.h"
#include "dri2.h"
#include "dri_common.h"
#include "../../mesa/drivers/dri/common/dri_util.h"
/* From xmlpool/options.h, user exposed so should be stable */
#define DRI_CONF_VBLANK_NEVER 0
#define DRI_CONF_VBLANK_DEF_INTERVAL_0 1
#define DRI_CONF_VBLANK_DEF_INTERVAL_1 2
#define DRI_CONF_VBLANK_ALWAYS_SYNC 3
#undef DRI2_MINOR
#define DRI2_MINOR 1
@@ -177,6 +182,7 @@ dri2CreateDrawable(__GLXscreenConfigs * psc,
__GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) modes;
__GLXdisplayPrivate *dpyPriv;
__GLXDRIdisplayPrivate *pdp;
GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
pdraw = Xmalloc(sizeof(*pdraw));
if (!pdraw)
@@ -187,7 +193,22 @@ dri2CreateDrawable(__GLXscreenConfigs * psc,
pdraw->base.drawable = drawable;
pdraw->base.psc = psc;
pdraw->bufferCount = 0;
pdraw->swap_interval = 1;
pdraw->swap_interval = 1; /* default may be overridden below */
if (psc->config)
psc->config->configQueryi(psc->__driScreen, "vblank_mode", &vblank_mode);
switch (vblank_mode) {
case DRI_CONF_VBLANK_NEVER:
case DRI_CONF_VBLANK_DEF_INTERVAL_0:
pdraw->swap_interval = 0;
break;
case DRI_CONF_VBLANK_DEF_INTERVAL_1:
case DRI_CONF_VBLANK_ALWAYS_SYNC:
default:
pdraw->swap_interval = 1;
break;
}
DRI2CreateDrawable(psc->dpy, xDrawable);
@@ -474,7 +495,23 @@ dri2GetBuffersWithFormat(__DRIdrawable * driDrawable,
static void
dri2SetSwapInterval(__GLXDRIdrawable *pdraw, int interval)
{
__GLXscreenConfigs *psc = pdraw->psc;
__GLXDRIdrawablePrivate *priv = (__GLXDRIdrawablePrivate *) pdraw;
GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
if (psc->config)
psc->config->configQueryi(psc->__driScreen, "vblank_mode", &vblank_mode);
switch (vblank_mode) {
case DRI_CONF_VBLANK_NEVER:
return;
case DRI_CONF_VBLANK_ALWAYS_SYNC:
if (interval <= 0)
return;
break;
default:
break;
}
DRI2SwapInterval(priv->base.psc->dpy, pdraw->xDrawable, interval);
priv->swap_interval = interval;