diff options
| -rw-r--r-- | src/mesa/state_tracker/st_cb_fbo.c | 27 |
1 files changed, 16 insertions, 11 deletions
diff --git a/src/mesa/state_tracker/st_cb_fbo.c b/src/mesa/state_tracker/st_cb_fbo.c index ec7788923a..e55281a430 100644 --- a/src/mesa/state_tracker/st_cb_fbo.c +++ b/src/mesa/state_tracker/st_cb_fbo.c @@ -80,6 +80,8 @@ init_renderbuffer_bits(struct st_renderbuffer *strb, /** * gl_renderbuffer::AllocStorage() + * This is called to allocate the original drawing surface, and + * during window resize. */ static GLboolean st_renderbuffer_alloc_storage(GLcontext * ctx, struct gl_renderbuffer *rb, @@ -90,8 +92,10 @@ st_renderbuffer_alloc_storage(GLcontext * ctx, struct gl_renderbuffer *rb, struct st_renderbuffer *strb = st_renderbuffer(rb); enum pipe_format pipeFormat; GLbitfield flags = 0x0; /* XXX needed? */ + int ret; if (!strb->surface) { + /* first time surface creation */ strb->surface = pipe->winsys->surface_alloc(pipe->winsys); assert(strb->surface); assert(strb->surface->refcount); @@ -99,10 +103,10 @@ st_renderbuffer_alloc_storage(GLcontext * ctx, struct gl_renderbuffer *rb, if (!strb->surface) return GL_FALSE; } - - if (strb->surface->buffer) - pipe_buffer_reference(pipe->winsys, &strb->surface->buffer, - NULL); + else if (strb->surface->buffer) { + /* release/discard the old surface buffer */ + pipe_buffer_reference(pipe->winsys, &strb->surface->buffer, NULL); + } /* Determine surface format here */ if (strb->format != PIPE_FORMAT_NONE) { @@ -116,14 +120,15 @@ st_renderbuffer_alloc_storage(GLcontext * ctx, struct gl_renderbuffer *rb, init_renderbuffer_bits(strb, pipeFormat); - pipe->winsys->surface_alloc_storage(pipe->winsys, - strb->surface, - width, - height, - pipeFormat, - flags); - if (!strb->surface->buffer) + ret = pipe->winsys->surface_alloc_storage(pipe->winsys, + strb->surface, + width, + height, + pipeFormat, + flags); + if (ret || !strb->surface->buffer) { return GL_FALSE; /* out of memory, try s/w buffer? */ + } ASSERT(strb->surface->buffer); ASSERT(strb->surface->format); |