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egl/gbm: Implement EGL_EXT_buffer_age

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Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Kristian Høgsberg 2012-12-13 23:39:45 -05:00
parent 0ae81b8422
commit 4e42e569dd
2 changed files with 24 additions and 0 deletions
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1
src/egl/drivers/dri2/egl_dri2.h
View file

@ -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];

23
src/egl/drivers/dri2/platform_drm.c
View file

@ -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;