[Intel-gfx] [Resend][PATCH] Release fb backing regions when destroy buffer

[Shuang He]

fb backing regions should be released when destroy buffer, or there will
be memory leaks.

---
 src/mesa/drivers/dri/intel/intel_screen.c |   24 ++++++++++++++++++++++++
 1 files changed, 24 insertions(+), 0 deletions(-)

diff --git a/src/mesa/drivers/dri/intel/intel_screen.c b/src/mesa/drivers/dri/intel/intel_screen.c
index 6521b4e..a428a46 100644
--- a/src/mesa/drivers/dri/intel/intel_screen.c
+++ b/src/mesa/drivers/dri/intel/intel_screen.c
@@ -406,6 +406,30 @@ intelCreateBuffer(__DRIscreenPrivate * driScrnPriv,
 static void
 intelDestroyBuffer(__DRIdrawablePrivate * driDrawPriv)
 {
+   struct intel_framebuffer *intel_fb = driDrawPriv->driverPrivate;
+   struct intel_renderbuffer *depth_rb;
+   struct intel_renderbuffer *stencil_rb;
+
+   if (intel_fb) {
+      if (intel_fb->color_rb[0]) {
+         intel_renderbuffer_set_region(intel_fb->color_rb[0], NULL);
+      }
+
+      if (intel_fb->color_rb[1]) {
+         intel_renderbuffer_set_region(intel_fb->color_rb[1], NULL);
+      }
+
+      depth_rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
+      if (depth_rb) {
+         intel_renderbuffer_set_region(depth_rb, NULL);
+      }
+
+      stencil_rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
+      if (stencil_rb) {
+         intel_renderbuffer_set_region(stencil_rb, NULL);
+      }
+   }
+
    _mesa_reference_framebuffer((GLframebuffer **)(&(driDrawPriv->driverPrivate)), NULL);
 }
 
-- 
1.6.0.3