1 /**************************************************************************
2 *
3 * Copyright 2009 VMware, Inc.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28 #include "main/glheader.h"
29 #include "st_context.h"
30 #include "st_cb_fbo.h"
31 #include "st_cb_viewport.h"
32
33 #include "pipe/p_state.h"
34 #include "pipe/p_defines.h"
35 #include "util/u_atomic.h"
36
37
st_viewport(struct gl_context * ctx)38 static void st_viewport(struct gl_context *ctx)
39 {
40 struct st_context *st = ctx->st;
41 struct st_framebuffer *stdraw;
42 struct st_framebuffer *stread;
43
44 if (!st->invalidate_on_gl_viewport)
45 return;
46
47 /*
48 * Normally we'd want the state tracker manager to mark the drawables
49 * invalid only when needed. This will force the state tracker manager
50 * to revalidate the drawable, rather than just update the context with
51 * the latest cached drawable info.
52 */
53
54 stdraw = st_ws_framebuffer(st->ctx->DrawBuffer);
55 stread = st_ws_framebuffer(st->ctx->ReadBuffer);
56
57 if (stdraw)
58 stdraw->iface_stamp = p_atomic_read(&stdraw->iface->stamp) - 1;
59 if (stread && stread != stdraw)
60 stread->iface_stamp = p_atomic_read(&stread->iface->stamp) - 1;
61 }
62
st_init_viewport_functions(struct dd_function_table * functions)63 void st_init_viewport_functions(struct dd_function_table *functions)
64 {
65 functions->Viewport = st_viewport;
66 }
67