1 /**************************************************************************
3 * Copyright 2009, VMware, Inc.
5 * Copyright 2010 George Sapountzis <gsapountzis@gmail.com>
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sub license, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial portions
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
22 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27 **************************************************************************/
29 #include "pipe/p_compiler.h"
30 #include "pipe/p_format.h"
31 #include "util/u_inlines.h"
32 #include "util/u_format.h"
33 #include "util/u_math.h"
34 #include "util/u_memory.h"
36 #include "state_tracker/sw_winsys.h"
37 #include "dri_sw_winsys.h"
40 struct dri_sw_displaytarget
42 enum pipe_format format;
53 struct sw_winsys base;
55 struct drisw_loader_funcs *lf;
58 static INLINE struct dri_sw_displaytarget *
59 dri_sw_displaytarget( struct sw_displaytarget *dt )
61 return (struct dri_sw_displaytarget *)dt;
64 static INLINE struct dri_sw_winsys *
65 dri_sw_winsys( struct sw_winsys *ws )
67 return (struct dri_sw_winsys *)ws;
72 dri_sw_is_displaytarget_format_supported( struct sw_winsys *ws,
74 enum pipe_format format )
76 /* TODO: check visuals or other sensible thing here */
80 static struct sw_displaytarget *
81 dri_sw_displaytarget_create(struct sw_winsys *winsys,
83 enum pipe_format format,
84 unsigned width, unsigned height,
88 struct dri_sw_displaytarget *dri_sw_dt;
89 unsigned nblocksy, size, format_stride;
91 dri_sw_dt = CALLOC_STRUCT(dri_sw_displaytarget);
95 dri_sw_dt->format = format;
96 dri_sw_dt->width = width;
97 dri_sw_dt->height = height;
99 format_stride = util_format_get_stride(format, width);
100 dri_sw_dt->stride = align(format_stride, alignment);
102 nblocksy = util_format_get_nblocksy(format, height);
103 size = dri_sw_dt->stride * nblocksy;
105 dri_sw_dt->data = align_malloc(size, alignment);
109 *stride = dri_sw_dt->stride;
110 return (struct sw_displaytarget *)dri_sw_dt;
119 dri_sw_displaytarget_destroy(struct sw_winsys *ws,
120 struct sw_displaytarget *dt)
122 struct dri_sw_displaytarget *dri_sw_dt = dri_sw_displaytarget(dt);
124 if (dri_sw_dt->data) {
125 FREE(dri_sw_dt->data);
132 dri_sw_displaytarget_map(struct sw_winsys *ws,
133 struct sw_displaytarget *dt,
136 struct dri_sw_displaytarget *dri_sw_dt = dri_sw_displaytarget(dt);
137 dri_sw_dt->mapped = dri_sw_dt->data;
138 return dri_sw_dt->mapped;
142 dri_sw_displaytarget_unmap(struct sw_winsys *ws,
143 struct sw_displaytarget *dt)
145 struct dri_sw_displaytarget *dri_sw_dt = dri_sw_displaytarget(dt);
146 dri_sw_dt->mapped = NULL;
149 static struct sw_displaytarget *
150 dri_sw_displaytarget_from_handle(struct sw_winsys *winsys,
151 const struct pipe_texture *templ,
152 struct winsys_handle *whandle,
160 dri_sw_displaytarget_get_handle(struct sw_winsys *winsys,
161 struct sw_displaytarget *dt,
162 struct winsys_handle *whandle)
169 dri_sw_displaytarget_display(struct sw_winsys *ws,
170 struct sw_displaytarget *dt,
171 void *context_private)
173 struct dri_sw_winsys *dri_sw_ws = dri_sw_winsys(ws);
174 struct dri_sw_displaytarget *dri_sw_dt = dri_sw_displaytarget(dt);
175 struct dri_drawable *dri_drawable = (struct dri_drawable *)context_private;
176 unsigned width, height;
178 /* Set the width to 'stride / cpp'.
180 * PutImage correctly clips to the width of the dst drawable.
182 width = dri_sw_dt->stride / util_format_get_blocksize(dri_sw_dt->format);
184 height = dri_sw_dt->height;
186 dri_sw_ws->lf->put_image(dri_drawable, dri_sw_dt->data, width, height);
191 dri_destroy_sw_winsys(struct sw_winsys *winsys)
197 dri_create_sw_winsys(struct drisw_loader_funcs *lf)
199 struct dri_sw_winsys *ws;
201 ws = CALLOC_STRUCT(dri_sw_winsys);
206 ws->base.destroy = dri_destroy_sw_winsys;
208 ws->base.is_displaytarget_format_supported = dri_sw_is_displaytarget_format_supported;
210 /* screen texture functions */
211 ws->base.displaytarget_create = dri_sw_displaytarget_create;
212 ws->base.displaytarget_destroy = dri_sw_displaytarget_destroy;
213 ws->base.displaytarget_from_handle = dri_sw_displaytarget_from_handle;
214 ws->base.displaytarget_get_handle = dri_sw_displaytarget_get_handle;
216 /* texture functions */
217 ws->base.displaytarget_map = dri_sw_displaytarget_map;
218 ws->base.displaytarget_unmap = dri_sw_displaytarget_unmap;
220 ws->base.displaytarget_display = dri_sw_displaytarget_display;
225 /* vim: set sw=3 ts=8 sts=3 expandtab: */