summaryrefslogtreecommitdiff
path: root/src/gallium/winsys/sw/dri/dri_sw_winsys.c
blob: 6fed22bbd7c8c2cf6dff03a694aa18c8c178f3aa (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
/**************************************************************************
 *
 * Copyright 2009, VMware, Inc.
 * All Rights Reserved.
 * Copyright 2010 George Sapountzis <gsapountzis@gmail.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 **************************************************************************/

#include "pipe/p_compiler.h"
#include "pipe/p_format.h"
#include "util/u_inlines.h"
#include "util/u_format.h"
#include "util/u_math.h"
#include "util/u_memory.h"

#include "state_tracker/sw_winsys.h"
#include "dri_sw_winsys.h"


struct dri_sw_displaytarget
{
   enum pipe_format format;
   unsigned width;
   unsigned height;
   unsigned stride;

   void *data;
   void *mapped;
};

struct dri_sw_winsys
{
   struct sw_winsys base;

   struct drisw_loader_funcs *lf;
};

static INLINE struct dri_sw_displaytarget *
dri_sw_displaytarget( struct sw_displaytarget *dt )
{
   return (struct dri_sw_displaytarget *)dt;
}

static INLINE struct dri_sw_winsys *
dri_sw_winsys( struct sw_winsys *ws )
{
   return (struct dri_sw_winsys *)ws;
}


static boolean
dri_sw_is_displaytarget_format_supported( struct sw_winsys *ws,
                                          unsigned tex_usage,
                                          enum pipe_format format )
{
   /* TODO: check visuals or other sensible thing here */
   return TRUE;
}

static struct sw_displaytarget *
dri_sw_displaytarget_create(struct sw_winsys *winsys,
                            unsigned tex_usage,
                            enum pipe_format format,
                            unsigned width, unsigned height,
                            unsigned alignment,
                            unsigned *stride)
{
   struct dri_sw_displaytarget *dri_sw_dt;
   unsigned nblocksy, size, format_stride;

   dri_sw_dt = CALLOC_STRUCT(dri_sw_displaytarget);
   if(!dri_sw_dt)
      goto no_dt;

   dri_sw_dt->format = format;
   dri_sw_dt->width = width;
   dri_sw_dt->height = height;

   format_stride = util_format_get_stride(format, width);
   dri_sw_dt->stride = align(format_stride, alignment);

   nblocksy = util_format_get_nblocksy(format, height);
   size = dri_sw_dt->stride * nblocksy;

   dri_sw_dt->data = align_malloc(size, alignment);
   if(!dri_sw_dt->data)
      goto no_data;

   *stride = dri_sw_dt->stride;
   return (struct sw_displaytarget *)dri_sw_dt;

no_data:
   FREE(dri_sw_dt);
no_dt:
   return NULL;
}

static void
dri_sw_displaytarget_destroy(struct sw_winsys *ws,
                             struct sw_displaytarget *dt)
{
   struct dri_sw_displaytarget *dri_sw_dt = dri_sw_displaytarget(dt);

   FREE(dri_sw_dt->data);

   FREE(dri_sw_dt);
}

static void *
dri_sw_displaytarget_map(struct sw_winsys *ws,
                         struct sw_displaytarget *dt,
                         unsigned flags)
{
   struct dri_sw_displaytarget *dri_sw_dt = dri_sw_displaytarget(dt);
   dri_sw_dt->mapped = dri_sw_dt->data;
   return dri_sw_dt->mapped;
}

static void
dri_sw_displaytarget_unmap(struct sw_winsys *ws,
                           struct sw_displaytarget *dt)
{
   struct dri_sw_displaytarget *dri_sw_dt = dri_sw_displaytarget(dt);
   dri_sw_dt->mapped = NULL;
}

static struct sw_displaytarget *
dri_sw_displaytarget_from_handle(struct sw_winsys *winsys,
                                 const struct pipe_resource *templ,
                                 struct winsys_handle *whandle,
                                 unsigned *stride)
{
   assert(0);
   return NULL;
}

static boolean
dri_sw_displaytarget_get_handle(struct sw_winsys *winsys,
                                struct sw_displaytarget *dt,
                                struct winsys_handle *whandle)
{
   assert(0);
   return FALSE;
}

static void
dri_sw_displaytarget_display(struct sw_winsys *ws,
                             struct sw_displaytarget *dt,
                             void *context_private,
                             struct pipe_box *box)
{
   struct dri_sw_winsys *dri_sw_ws = dri_sw_winsys(ws);
   struct dri_sw_displaytarget *dri_sw_dt = dri_sw_displaytarget(dt);
   struct dri_drawable *dri_drawable = (struct dri_drawable *)context_private;
   unsigned width, height;
   unsigned blsize = util_format_get_blocksize(dri_sw_dt->format);

   /* Set the width to 'stride / cpp'.
    *
    * PutImage correctly clips to the width of the dst drawable.
    */
   width = dri_sw_dt->stride / blsize;

   height = dri_sw_dt->height;

   if (box) {
       void *data;
       data = dri_sw_dt->data + (dri_sw_dt->stride * box->y) + box->x * blsize;
       dri_sw_ws->lf->put_image2(dri_drawable, data,
                                 box->x, box->y, box->width, box->height, dri_sw_dt->stride);
   } else {
       dri_sw_ws->lf->put_image(dri_drawable, dri_sw_dt->data, width, height);
   }
}

static void
dri_destroy_sw_winsys(struct sw_winsys *winsys)
{
   FREE(winsys);
}

struct sw_winsys *
dri_create_sw_winsys(struct drisw_loader_funcs *lf)
{
   struct dri_sw_winsys *ws;

   ws = CALLOC_STRUCT(dri_sw_winsys);
   if (!ws)
      return NULL;

   ws->lf = lf;
   ws->base.destroy = dri_destroy_sw_winsys;

   ws->base.is_displaytarget_format_supported = dri_sw_is_displaytarget_format_supported;

   /* screen texture functions */
   ws->base.displaytarget_create = dri_sw_displaytarget_create;
   ws->base.displaytarget_destroy = dri_sw_displaytarget_destroy;
   ws->base.displaytarget_from_handle = dri_sw_displaytarget_from_handle;
   ws->base.displaytarget_get_handle = dri_sw_displaytarget_get_handle;

   /* texture functions */
   ws->base.displaytarget_map = dri_sw_displaytarget_map;
   ws->base.displaytarget_unmap = dri_sw_displaytarget_unmap;

   ws->base.displaytarget_display = dri_sw_displaytarget_display;

   return &ws->base;
}

/* vim: set sw=3 ts=8 sts=3 expandtab: */