Signed-off-by: Fredrik Höglund <fred...@kde.org>
---
src/gallium/state_trackers/egl/common/egl_g3d.c | 8 ++++-
.../state_trackers/egl/common/egl_g3d_api.c | 26 ++++++++++++++++++++
2 files changed, 32 insertions(+), 2 deletions(-)
diff --git a/src/gallium/state_trackers/egl/common/egl_g3d.c
b/src/gallium/state_trackers/egl/common/egl_g3d.c
index 53811b8..f870b18 100644
--- a/src/gallium/state_trackers/egl/common/egl_g3d.c
+++ b/src/gallium/state_trackers/egl/common/egl_g3d.c
@@ -606,11 +606,15 @@ egl_g3d_initialize(_EGLDriver *drv, _EGLDisplay *dpy)
dpy->Extensions.WL_bind_wayland_display = EGL_TRUE;
#endif
-#ifdef EGL_NOK_swap_region
if (gdpy->native->get_param(gdpy->native, NATIVE_PARAM_PRESENT_REGION) &&
- gdpy->native->get_param(gdpy->native, NATIVE_PARAM_PRESERVE_BUFFER))
+ gdpy->native->get_param(gdpy->native, NATIVE_PARAM_PRESERVE_BUFFER)) {
+#ifdef EGL_NOK_swap_region
dpy->Extensions.NOK_swap_region = EGL_TRUE;
#endif
+#ifdef EGL_NV_post_sub_buffer
+ dpy->Extensions.NV_post_sub_buffer = EGL_TRUE;
+#endif
+ }
if (egl_g3d_add_configs(drv, dpy, 1) == 1) {
_eglError(EGL_NOT_INITIALIZED, "eglInitialize(unable to add configs)");
diff --git a/src/gallium/state_trackers/egl/common/egl_g3d_api.c
b/src/gallium/state_trackers/egl/common/egl_g3d_api.c
index 2e3ead6..e16955c 100644
--- a/src/gallium/state_trackers/egl/common/egl_g3d_api.c
+++ b/src/gallium/state_trackers/egl/common/egl_g3d_api.c
@@ -296,6 +296,16 @@ egl_g3d_create_surface(_EGLDriver *drv, _EGLDisplay *dpy,
_EGLConfig *conf,
gconf->stvis.buffer_mask & ST_ATTACHMENT_FRONT_LEFT_MASK)
gsurf->stvis.render_buffer = ST_ATTACHMENT_FRONT_LEFT;
+#ifdef EGL_NV_post_sub_buffer
+ if (dpy->Extensions.NV_post_sub_buffer) {
+ if (gsurf->base.Type == EGL_WINDOW_BIT &&
+ gsurf->base.RenderBuffer == EGL_BACK_BUFFER)
+ gsurf->base.PostSubBufferSupportedNV = EGL_TRUE;
+ else
+ gsurf->base.PostSubBufferSupportedNV = EGL_FALSE;
+ }
+#endif
+
gsurf->stfbi = egl_g3d_create_st_framebuffer(&gsurf->base);
if (!gsurf->stfbi) {
nsurf->destroy(nsurf);
@@ -601,6 +611,18 @@ egl_g3d_swap_buffers_region(_EGLDriver *drv, _EGLDisplay
*dpy, _EGLSurface *surf
}
#endif /* EGL_NOK_swap_region */
+#ifdef EGL_NV_post_sub_buffer
+static EGLBoolean
+egl_g3d_post_sub_buffer(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
+ EGLint x, EGLint y, EGLint width, EGLint height)
+{
+ /* Note: y=0=bottom */
+ const EGLint rect[4] = { x, surf->Height - y - height, width, height };
+
+ return swap_buffers(drv, dpy, surf, 1, rect, EGL_TRUE);
+}
+#endif /* EGL_NV_post_sub_buffer */
+
static EGLBoolean
egl_g3d_copy_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
EGLNativePixmapType target)
@@ -893,4 +915,8 @@ egl_g3d_init_driver_api(_EGLDriver *drv)
#ifdef EGL_NOK_swap_region
drv->API.SwapBuffersRegionNOK = egl_g3d_swap_buffers_region;
#endif
+
+#ifdef EGL_NV_post_sub_buffer
+ drv->API.PostSubBufferNV = egl_g3d_post_sub_buffer;
+#endif
}
--
1.7.7.3
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