1 /**************************************************************************
2 *
3 * Copyright 2010 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 SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
18 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
19 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
20 * USE OR OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * The above copyright notice and this permission notice (including the
23 * next paragraph) shall be included in all copies or substantial portions
24 * of the Software.
25 *
26 **************************************************************************/
27
28 /**
29 * @file
30 * Null software rasterizer winsys.
31 *
32 * There is no present support. Framebuffer data needs to be obtained via
33 * transfers.
34 *
35 * @author Jose Fonseca
36 */
37
38 #include <stdio.h>
39
40 #include "util/format/u_formats.h"
41 #include "util/u_memory.h"
42 #include "frontend/sw_winsys.h"
43 #include "null_sw_winsys.h"
44
45
46 static bool
null_sw_is_displaytarget_format_supported(struct sw_winsys * ws,unsigned tex_usage,enum pipe_format format)47 null_sw_is_displaytarget_format_supported(struct sw_winsys *ws,
48 unsigned tex_usage,
49 enum pipe_format format )
50 {
51 return false;
52 }
53
54
55 static void *
null_sw_displaytarget_map(struct sw_winsys * ws,struct sw_displaytarget * dt,unsigned flags)56 null_sw_displaytarget_map(struct sw_winsys *ws,
57 struct sw_displaytarget *dt,
58 unsigned flags )
59 {
60 assert(0);
61 return NULL;
62 }
63
64
65 static void
null_sw_displaytarget_unmap(struct sw_winsys * ws,struct sw_displaytarget * dt)66 null_sw_displaytarget_unmap(struct sw_winsys *ws,
67 struct sw_displaytarget *dt )
68 {
69 assert(0);
70 }
71
72
73 static void
null_sw_displaytarget_destroy(struct sw_winsys * winsys,struct sw_displaytarget * dt)74 null_sw_displaytarget_destroy(struct sw_winsys *winsys,
75 struct sw_displaytarget *dt)
76 {
77 assert(0);
78 }
79
80
81 static struct sw_displaytarget *
null_sw_displaytarget_create(struct sw_winsys * winsys,unsigned tex_usage,enum pipe_format format,unsigned width,unsigned height,unsigned alignment,const void * front_private,unsigned * stride)82 null_sw_displaytarget_create(struct sw_winsys *winsys,
83 unsigned tex_usage,
84 enum pipe_format format,
85 unsigned width, unsigned height,
86 unsigned alignment,
87 const void *front_private,
88 unsigned *stride)
89 {
90 fprintf(stderr, "null_sw_displaytarget_create() returning NULL\n");
91 return NULL;
92 }
93
94 static struct sw_displaytarget *
null_sw_displaytarget_create_mapped(struct sw_winsys * winsys,unsigned tex_usage,enum pipe_format format,unsigned width,unsigned height,unsigned stride,void * data)95 null_sw_displaytarget_create_mapped(struct sw_winsys *winsys,
96 unsigned tex_usage,
97 enum pipe_format format,
98 unsigned width, unsigned height,
99 unsigned stride,
100 void *data)
101 {
102 fprintf(stderr, "null_sw_displaytarget_create_mapped() returning NULL\n");
103 return NULL;
104 }
105
106
107 static struct sw_displaytarget *
null_sw_displaytarget_from_handle(struct sw_winsys * winsys,const struct pipe_resource * templat,struct winsys_handle * whandle,unsigned * stride)108 null_sw_displaytarget_from_handle(struct sw_winsys *winsys,
109 const struct pipe_resource *templat,
110 struct winsys_handle *whandle,
111 unsigned *stride)
112 {
113 return NULL;
114 }
115
116
117 static bool
null_sw_displaytarget_get_handle(struct sw_winsys * winsys,struct sw_displaytarget * dt,struct winsys_handle * whandle)118 null_sw_displaytarget_get_handle(struct sw_winsys *winsys,
119 struct sw_displaytarget *dt,
120 struct winsys_handle *whandle)
121 {
122 assert(0);
123 return false;
124 }
125
126
127 static void
null_sw_displaytarget_display(struct sw_winsys * winsys,struct sw_displaytarget * dt,void * context_private,unsigned nboxes,struct pipe_box * box)128 null_sw_displaytarget_display(struct sw_winsys *winsys,
129 struct sw_displaytarget *dt,
130 void *context_private,
131 unsigned nboxes,
132 struct pipe_box *box)
133 {
134 assert(0);
135 }
136
137
138 static void
null_sw_destroy(struct sw_winsys * winsys)139 null_sw_destroy(struct sw_winsys *winsys)
140 {
141 FREE(winsys);
142 }
143
144
145 struct sw_winsys *
null_sw_create(void)146 null_sw_create(void)
147 {
148 static struct sw_winsys *winsys;
149
150 winsys = CALLOC_STRUCT(sw_winsys);
151 if (!winsys)
152 return NULL;
153
154 winsys->destroy = null_sw_destroy;
155 winsys->is_displaytarget_format_supported = null_sw_is_displaytarget_format_supported;
156 winsys->displaytarget_create = null_sw_displaytarget_create;
157 winsys->displaytarget_create_mapped = null_sw_displaytarget_create_mapped;
158 winsys->displaytarget_from_handle = null_sw_displaytarget_from_handle;
159 winsys->displaytarget_get_handle = null_sw_displaytarget_get_handle;
160 winsys->displaytarget_map = null_sw_displaytarget_map;
161 winsys->displaytarget_unmap = null_sw_displaytarget_unmap;
162 winsys->displaytarget_display = null_sw_displaytarget_display;
163 winsys->displaytarget_destroy = null_sw_displaytarget_destroy;
164
165 return winsys;
166 }
167