diff options
Diffstat (limited to 'src/egl/drivers/dri2/egl_dri2.c')
| -rw-r--r-- | src/egl/drivers/dri2/egl_dri2.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/src/egl/drivers/dri2/egl_dri2.c b/src/egl/drivers/dri2/egl_dri2.c index 2a6811c..86e5f24 100644 --- a/src/egl/drivers/dri2/egl_dri2.c +++ b/src/egl/drivers/dri2/egl_dri2.c @@ -1087,6 +1087,42 @@ dri2_swap_interval(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf, return dri2_dpy->vtbl->swap_interval(drv, dpy, surf, interval); } +/** + * Asks the client API to flush any rendering to the drawable so that we can + * do our swapbuffers. + */ +void +dri2_flush_drawable_for_swapbuffers(_EGLDisplay *disp, _EGLSurface *draw) +{ + struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp); + struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw); + + if (dri2_dpy->flush) { + if (dri2_dpy->flush->base.version >= 4) { + /* We know there's a current context because: + * + * "If surface is not bound to the calling thread’s current + * context, an EGL_BAD_SURFACE error is generated." + */ + _EGLContext *ctx = _eglGetCurrentContext(); + struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx); + + /* From the EGL 1.4 spec (page 52): + * + * "The contents of ancillary buffers are always undefined + * after calling eglSwapBuffers." + */ + dri2_dpy->flush->flush_with_flags(dri2_ctx->dri_context, + dri2_surf->dri_drawable, + __DRI2_FLUSH_DRAWABLE | + __DRI2_FLUSH_INVALIDATE_ANCILLARY, + __DRI2_THROTTLE_SWAPBUFFER); + } else { + dri2_dpy->flush->flush(dri2_surf->dri_drawable); + } + } +} + static EGLBoolean dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf) { |