1 /*
2 * Copyright 2003 VMware, Inc.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial portions
15 * of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
21 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
22 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
23 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26 #include "brw_context.h"
27 #include "intel_buffers.h"
28 #include "intel_fbo.h"
29 #include "intel_mipmap_tree.h"
30
31 #include "main/fbobject.h"
32 #include "main/framebuffer.h"
33 #include "main/renderbuffer.h"
34
35 static void
intelDrawBuffer(struct gl_context * ctx,GLenum mode)36 intelDrawBuffer(struct gl_context * ctx, GLenum mode)
37 {
38 if (_mesa_is_front_buffer_drawing(ctx->DrawBuffer)) {
39 struct brw_context *const brw = brw_context(ctx);
40
41 /* If we might be front-buffer rendering on this buffer for the first
42 * time, invalidate our DRI drawable so we'll ask for new buffers
43 * (including the fake front) before we start rendering again.
44 */
45 dri2InvalidateDrawable(brw->driContext->driDrawablePriv);
46 intel_prepare_render(brw);
47 }
48 }
49
50
51 static void
intelReadBuffer(struct gl_context * ctx,GLenum mode)52 intelReadBuffer(struct gl_context * ctx, GLenum mode)
53 {
54 if (_mesa_is_front_buffer_reading(ctx->ReadBuffer)) {
55 struct brw_context *const brw = brw_context(ctx);
56
57 /* If we might be front-buffer reading on this buffer for the first
58 * time, invalidate our DRI drawable so we'll ask for new buffers
59 * (including the fake front) before we start reading again.
60 */
61 dri2InvalidateDrawable(brw->driContext->driReadablePriv);
62 intel_prepare_render(brw);
63 }
64 }
65
66
67 void
intelInitBufferFuncs(struct dd_function_table * functions)68 intelInitBufferFuncs(struct dd_function_table *functions)
69 {
70 functions->DrawBuffer = intelDrawBuffer;
71 functions->ReadBuffer = intelReadBuffer;
72 }
73