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authorKristian Høgsberg <krh@bitplanet.net>2012-12-13 23:39:45 -0500
committerKristian Høgsberg <krh@bitplanet.net>2013-01-10 15:58:05 -0500
commit4e42e569dd5643ff948ab4ee31dd16b1683f21fa (patch)
tree864a60c29a9f1818573d08da373a7fd3f29db0c9 /src/egl/drivers
parent0ae81b8422e272e44ef40a09dc443c9014adbd0b (diff)
egl/gbm: Implement EGL_EXT_buffer_age
Reviewed-by: Eric Anholt <eric@anholt.net> Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Diffstat (limited to 'src/egl/drivers')
-rw-r--r--src/egl/drivers/dri2/egl_dri2.h1
-rw-r--r--src/egl/drivers/dri2/platform_drm.c23
2 files changed, 24 insertions, 0 deletions
diff --git a/src/egl/drivers/dri2/egl_dri2.h b/src/egl/drivers/dri2/egl_dri2.h
index 4b639974a2b..eb8c06e08a0 100644
--- a/src/egl/drivers/dri2/egl_dri2.h
+++ b/src/egl/drivers/dri2/egl_dri2.h
@@ -189,6 +189,7 @@ struct dri2_egl_surface
struct {
struct gbm_bo *bo;
int locked;
+ int age;
} color_buffers[3], *back, *current;
#ifndef HAVE_WAYLAND_PLATFORM
__DRIbuffer *dri_buffers[__DRI_BUFFER_COUNT];
diff --git a/src/egl/drivers/dri2/platform_drm.c b/src/egl/drivers/dri2/platform_drm.c
index 3e04a6cdcb0..615648b9e99 100644
--- a/src/egl/drivers/dri2/platform_drm.c
+++ b/src/egl/drivers/dri2/platform_drm.c
@@ -324,11 +324,16 @@ dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
{
struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
+ int i;
if (dri2_surf->base.Type == EGL_WINDOW_BIT) {
if (dri2_surf->current)
_eglError(EGL_BAD_SURFACE, "dri2_swap_buffers");
+ for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++)
+ if (dri2_surf->color_buffers[i].age > 0)
+ dri2_surf->color_buffers[i].age++;
dri2_surf->current = dri2_surf->back;
+ dri2_surf->current->age = 1;
dri2_surf->back = NULL;
}
@@ -338,6 +343,21 @@ dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
return EGL_TRUE;
}
+static EGLint
+dri2_query_buffer_age(_EGLDriver *drv,
+ _EGLDisplay *disp, _EGLSurface *surface)
+{
+ struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface);
+ __DRIbuffer buffer;
+
+ if (get_back_bo(dri2_surf, &buffer) < 0) {
+ _eglError(EGL_BAD_ALLOC, "dri2_query_buffer_age");
+ return 0;
+ }
+
+ return dri2_surf->back->age;
+}
+
static _EGLImage *
dri2_create_image_khr_pixmap(_EGLDisplay *disp, _EGLContext *ctx,
EGLClientBuffer buffer, const EGLint *attr_list)
@@ -464,6 +484,9 @@ dri2_initialize_drm(_EGLDriver *drv, _EGLDisplay *disp)
drv->API.DestroySurface = dri2_destroy_surface;
drv->API.SwapBuffers = dri2_swap_buffers;
drv->API.CreateImageKHR = dri2_drm_create_image_khr;
+ drv->API.QueryBufferAge = dri2_query_buffer_age;
+
+ disp->Extensions.EXT_buffer_age = EGL_TRUE;
#ifdef HAVE_WAYLAND_PLATFORM
disp->Extensions.WL_bind_wayland_display = EGL_TRUE;