1
/**************************************************************************
3
* Copyright 2009-2010 VMware, Inc. All Rights Reserved.
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, sub license, 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:
13
* The above copyright notice and this permission notice (including the
14
* next paragraph) shall be included in all copies or substantial portions
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 NON-INFRINGEMENT.
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.
25
**************************************************************************/
29
* Framebuffer utility functions.
35
#include "pipe/p_screen.h"
36
#include "pipe/p_state.h"
37
#include "pipe/p_defines.h"
38
#include "util/u_inlines.h"
40
#include "util/u_memory.h"
41
#include "util/u_framebuffer.h"
45
* Compare pipe_framebuffer_state objects.
46
* \return TRUE if same, FALSE if different
49
util_framebuffer_state_equal(const struct pipe_framebuffer_state *dst,
50
const struct pipe_framebuffer_state *src)
54
if (dst->width != src->width ||
55
dst->height != src->height)
58
for (i = 0; i < Elements(src->cbufs); i++) {
59
if (dst->cbufs[i] != src->cbufs[i]) {
64
if (dst->nr_cbufs != src->nr_cbufs) {
68
if (dst->zsbuf != src->zsbuf) {
77
* Copy framebuffer state from src to dst, updating refcounts.
80
util_copy_framebuffer_state(struct pipe_framebuffer_state *dst,
81
const struct pipe_framebuffer_state *src)
85
dst->width = src->width;
86
dst->height = src->height;
88
for (i = 0; i < src->nr_cbufs; i++)
89
pipe_surface_reference(&dst->cbufs[i], src->cbufs[i]);
91
for (i = src->nr_cbufs; i < dst->nr_cbufs; i++)
92
pipe_surface_reference(&dst->cbufs[i], NULL);
94
dst->nr_cbufs = src->nr_cbufs;
96
pipe_surface_reference(&dst->zsbuf, src->zsbuf);
101
util_unreference_framebuffer_state(struct pipe_framebuffer_state *fb)
105
for (i = 0; i < fb->nr_cbufs; i++) {
106
pipe_surface_reference(&fb->cbufs[i], NULL);
109
pipe_surface_reference(&fb->zsbuf, NULL);
111
fb->width = fb->height = 0;
116
/* Where multiple sizes are allowed for framebuffer surfaces, find the
117
* minimum width and height of all bound surfaces.
120
util_framebuffer_min_size(const struct pipe_framebuffer_state *fb,
128
for (i = 0; i < fb->nr_cbufs; i++) {
129
w = MIN2(w, fb->cbufs[i]->width);
130
h = MIN2(h, fb->cbufs[i]->height);
134
w = MIN2(w, fb->zsbuf->width);
135
h = MIN2(h, fb->zsbuf->height);