2 * Mesa 3-D graphics library
5 * Copyright (C) 2010 LunarG Inc.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 * Chia-I Wu <olv@lunarg.com>
28 #include "util/u_memory.h"
29 #include "util/u_inlines.h"
30 #include "util/u_atomic.h"
31 #include "state_tracker/st_gl_api.h" /* for st_gl_api_create */
34 #include "stw_device.h"
35 #include "stw_framebuffer.h"
36 #include "stw_pixelformat.h"
38 struct stw_st_framebuffer
{
39 struct st_framebuffer_iface base
;
41 struct stw_framebuffer
*fb
;
42 struct st_visual stvis
;
44 struct pipe_resource
*textures
[ST_ATTACHMENT_COUNT
];
45 unsigned texture_width
, texture_height
;
46 unsigned texture_mask
;
49 static INLINE
struct stw_st_framebuffer
*
50 stw_st_framebuffer(struct st_framebuffer_iface
*stfb
)
52 return (struct stw_st_framebuffer
*) stfb
;
56 * Remove outdated textures and create the requested ones.
59 stw_st_framebuffer_validate_locked(struct st_framebuffer_iface
*stfb
,
60 unsigned width
, unsigned height
,
63 struct stw_st_framebuffer
*stwfb
= stw_st_framebuffer(stfb
);
64 struct pipe_resource templ
;
67 /* remove outdated textures */
68 if (stwfb
->texture_width
!= width
|| stwfb
->texture_height
!= height
) {
69 for (i
= 0; i
< ST_ATTACHMENT_COUNT
; i
++)
70 pipe_resource_reference(&stwfb
->textures
[i
], NULL
);
73 memset(&templ
, 0, sizeof(templ
));
74 templ
.target
= PIPE_TEXTURE_2D
;
76 templ
.height0
= height
;
81 for (i
= 0; i
< ST_ATTACHMENT_COUNT
; i
++) {
82 enum pipe_format format
;
85 /* the texture already exists or not requested */
86 if (stwfb
->textures
[i
] || !(mask
& (1 << i
))) {
87 /* remember the texture */
88 if (stwfb
->textures
[i
])
94 case ST_ATTACHMENT_FRONT_LEFT
:
95 case ST_ATTACHMENT_BACK_LEFT
:
96 format
= stwfb
->stvis
.color_format
;
97 bind
= PIPE_BIND_DISPLAY_TARGET
|
98 PIPE_BIND_RENDER_TARGET
;
100 case ST_ATTACHMENT_DEPTH_STENCIL
:
101 format
= stwfb
->stvis
.depth_stencil_format
;
102 bind
= PIPE_BIND_DEPTH_STENCIL
;
105 format
= PIPE_FORMAT_NONE
;
109 if (format
!= PIPE_FORMAT_NONE
) {
110 templ
.format
= format
;
114 stw_dev
->screen
->resource_create(stw_dev
->screen
, &templ
);
118 stwfb
->texture_width
= width
;
119 stwfb
->texture_height
= height
;
120 stwfb
->texture_mask
= mask
;
124 stw_st_framebuffer_validate(struct st_framebuffer_iface
*stfb
,
125 const enum st_attachment_type
*statts
,
127 struct pipe_resource
**out
)
129 struct stw_st_framebuffer
*stwfb
= stw_st_framebuffer(stfb
);
130 unsigned statt_mask
, i
;
133 for (i
= 0; i
< count
; i
++)
134 statt_mask
|= 1 << statts
[i
];
136 pipe_mutex_lock(stwfb
->fb
->mutex
);
138 if (stwfb
->fb
->must_resize
|| (statt_mask
& ~stwfb
->texture_mask
)) {
139 stw_st_framebuffer_validate_locked(&stwfb
->base
,
140 stwfb
->fb
->width
, stwfb
->fb
->height
, statt_mask
);
141 stwfb
->fb
->must_resize
= FALSE
;
144 for (i
= 0; i
< count
; i
++) {
146 pipe_resource_reference(&out
[i
], stwfb
->textures
[statts
[i
]]);
149 stw_framebuffer_release(stwfb
->fb
);
155 * Present an attachment of the framebuffer.
158 stw_st_framebuffer_present_locked(HDC hdc
,
159 struct st_framebuffer_iface
*stfb
,
160 enum st_attachment_type statt
)
162 struct stw_st_framebuffer
*stwfb
= stw_st_framebuffer(stfb
);
163 struct pipe_resource
*resource
;
165 resource
= stwfb
->textures
[statt
];
167 stw_framebuffer_present_locked(hdc
, stwfb
->fb
, resource
);
174 stw_st_framebuffer_flush_front(struct st_framebuffer_iface
*stfb
,
175 enum st_attachment_type statt
)
177 struct stw_st_framebuffer
*stwfb
= stw_st_framebuffer(stfb
);
181 pipe_mutex_lock(stwfb
->fb
->mutex
);
183 /* We must not cache HDCs anywhere, as they can be invalidated by the
184 * application, or screen resolution changes. */
186 hDC
= GetDC(stwfb
->fb
->hWnd
);
188 ret
= stw_st_framebuffer_present_locked(hDC
, &stwfb
->base
, statt
);
190 ReleaseDC(stwfb
->fb
->hWnd
, hDC
);
196 * Create a framebuffer interface.
198 struct st_framebuffer_iface
*
199 stw_st_create_framebuffer(struct stw_framebuffer
*fb
)
201 struct stw_st_framebuffer
*stwfb
;
203 stwfb
= CALLOC_STRUCT(stw_st_framebuffer
);
208 stwfb
->stvis
= fb
->pfi
->stvis
;
210 stwfb
->base
.visual
= &stwfb
->stvis
;
211 p_atomic_set(&stwfb
->base
.stamp
, 1);
212 stwfb
->base
.flush_front
= stw_st_framebuffer_flush_front
;
213 stwfb
->base
.validate
= stw_st_framebuffer_validate
;
219 * Destroy a framebuffer interface.
222 stw_st_destroy_framebuffer_locked(struct st_framebuffer_iface
*stfb
)
224 struct stw_st_framebuffer
*stwfb
= stw_st_framebuffer(stfb
);
227 for (i
= 0; i
< ST_ATTACHMENT_COUNT
; i
++)
228 pipe_resource_reference(&stwfb
->textures
[i
], NULL
);
234 * Swap the buffers of the given framebuffer.
237 stw_st_swap_framebuffer_locked(HDC hdc
, struct st_framebuffer_iface
*stfb
)
239 struct stw_st_framebuffer
*stwfb
= stw_st_framebuffer(stfb
);
240 unsigned front
= ST_ATTACHMENT_FRONT_LEFT
, back
= ST_ATTACHMENT_BACK_LEFT
;
241 struct pipe_resource
*ptex
;
244 /* swap the textures */
245 ptex
= stwfb
->textures
[front
];
246 stwfb
->textures
[front
] = stwfb
->textures
[back
];
247 stwfb
->textures
[back
] = ptex
;
249 /* convert to mask */
253 /* swap the bits in mask */
254 mask
= stwfb
->texture_mask
& ~(front
| back
);
255 if (stwfb
->texture_mask
& front
)
257 if (stwfb
->texture_mask
& back
)
259 stwfb
->texture_mask
= mask
;
261 front
= ST_ATTACHMENT_FRONT_LEFT
;
262 return stw_st_framebuffer_present_locked(hdc
, &stwfb
->base
, front
);
266 * Create an st_api of the state tracker.
269 stw_st_create_api(void)
271 return st_gl_api_create();