diff options
| -rw-r--r-- | src/mesa/main/framebuffer.c | 47 | ||||
| -rw-r--r-- | src/mesa/main/framebuffer.h | 5 |
2 files changed, 38 insertions, 14 deletions
diff --git a/src/mesa/main/framebuffer.c b/src/mesa/main/framebuffer.c index ead7d46ea7..4d6871bb7d 100644 --- a/src/mesa/main/framebuffer.c +++ b/src/mesa/main/framebuffer.c @@ -78,10 +78,7 @@ set_depth_renderbuffer(struct gl_framebuffer *fb, struct gl_renderbuffer *rb) { if (fb->_DepthBuffer) { - fb->_DepthBuffer->RefCount--; - if (fb->_DepthBuffer->RefCount <= 0) { - fb->_DepthBuffer->Delete(fb->_DepthBuffer); - } + _mesa_dereference_renderbuffer(&fb->_DepthBuffer); } fb->_DepthBuffer = rb; if (rb) { @@ -99,10 +96,7 @@ set_stencil_renderbuffer(struct gl_framebuffer *fb, struct gl_renderbuffer *rb) { if (fb->_StencilBuffer) { - fb->_StencilBuffer->RefCount--; - if (fb->_StencilBuffer->RefCount <= 0) { - fb->_StencilBuffer->Delete(fb->_StencilBuffer); - } + _mesa_dereference_renderbuffer(&fb->_StencilBuffer); } fb->_StencilBuffer = rb; if (rb) { @@ -226,11 +220,11 @@ _mesa_free_framebuffer_data(struct gl_framebuffer *fb) struct gl_renderbuffer_attachment *att = &fb->Attachment[i]; if (att->Renderbuffer) { struct gl_renderbuffer *rb = att->Renderbuffer; - _glthread_LOCK_MUTEX(rb->Mutex); - rb->RefCount--; - _glthread_UNLOCK_MUTEX(rb->Mutex); - if (rb->RefCount == 0) { - rb->Delete(rb); + /* remove framebuffer's reference to renderbuffer */ + _mesa_dereference_renderbuffer(&rb); + if (rb && rb->Name == 0) { + /* delete window system renderbuffer */ + _mesa_dereference_renderbuffer(&rb); } } att->Type = GL_NONE; @@ -244,6 +238,33 @@ _mesa_free_framebuffer_data(struct gl_framebuffer *fb) /** + * Decrement the reference count on a framebuffer and delete it when + * the refcount hits zero. + * Note: we pass the address of a pointer and set it to NULL if we delete it. + */ +void +_mesa_dereference_framebuffer(struct gl_framebuffer **fb) +{ + GLboolean deleteFlag = GL_FALSE; + + _glthread_LOCK_MUTEX((*fb)->Mutex); + { + ASSERT((*fb)->RefCount > 0); + (*fb)->RefCount--; + deleteFlag = ((*fb)->RefCount == 0); + } + _glthread_UNLOCK_MUTEX((*fb)->Mutex); + + if (deleteFlag) { + (*fb)->Delete(*fb); + *fb = NULL; + } +} + + + + +/** * Resize the given framebuffer's renderbuffers to the new width and height. * This should only be used for window-system framebuffers, not * user-created renderbuffers (i.e. made with GL_EXT_framebuffer_object). diff --git a/src/mesa/main/framebuffer.h b/src/mesa/main/framebuffer.h index 1ff04085f3..7f3254fe8e 100644 --- a/src/mesa/main/framebuffer.h +++ b/src/mesa/main/framebuffer.h @@ -43,7 +43,10 @@ extern void _mesa_free_framebuffer_data(struct gl_framebuffer *buffer); extern void -_mesa_resize_framebuffer(GLcontext *ctx, struct gl_framebuffer *b, +_mesa_dereference_framebuffer(struct gl_framebuffer **fb); + +extern void +_mesa_resize_framebuffer(GLcontext *ctx, struct gl_framebuffer *fb, GLuint width, GLuint height); extern void |