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
|
/**************************************************************************
*
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* 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 TUNGSTEN GRAPHICS 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.
*
**************************************************************************/
/**
* @file
*
* Screen, Adapter or GPU
*
* These are driver functions/facilities that are context independent.
*/
#ifndef P_SCREEN_H
#define P_SCREEN_H
#include "pipe/p_compiler.h"
#include "pipe/p_format.h"
#include "pipe/p_defines.h"
#ifdef __cplusplus
extern "C" {
#endif
/** Opaque type */
struct winsys_handle;
/** Opaque type */
struct pipe_fence_handle;
struct pipe_winsys;
struct pipe_resource;
struct pipe_surface;
struct pipe_transfer;
/**
* Gallium screen/adapter context. Basically everything
* hardware-specific that doesn't actually require a rendering
* context.
*/
struct pipe_screen {
struct pipe_winsys *winsys;
void (*destroy)( struct pipe_screen * );
const char *(*get_name)( struct pipe_screen * );
const char *(*get_vendor)( struct pipe_screen * );
/**
* Query an integer-valued capability/parameter/limit
* \param param one of PIPE_CAP_x
*/
int (*get_param)( struct pipe_screen *, enum pipe_cap param );
/**
* Query a float-valued capability/parameter/limit
* \param param one of PIPE_CAP_x
*/
float (*get_paramf)( struct pipe_screen *, enum pipe_cap param );
/**
* Query a per-shader-stage integer-valued capability/parameter/limit
* \param param one of PIPE_CAP_x
*/
int (*get_shader_param)( struct pipe_screen *, unsigned shader, enum pipe_shader_cap param );
struct pipe_context * (*context_create)( struct pipe_screen *,
void *priv );
/**
* Check if the given pipe_format is supported as a texture or
* drawing surface.
* \param bindings bitmask of PIPE_BIND_*
* \param geom_flags bitmask of PIPE_TEXTURE_GEOM_*
*/
boolean (*is_format_supported)( struct pipe_screen *,
enum pipe_format format,
enum pipe_texture_target target,
unsigned sample_count,
unsigned bindings,
unsigned geom_flags );
/**
* Create a new texture object, using the given template info.
*/
struct pipe_resource * (*resource_create)(struct pipe_screen *,
const struct pipe_resource *templat);
/**
* Create a texture from a winsys_handle. The handle is often created in
* another process by first creating a pipe texture and then calling
* resource_get_handle.
*/
struct pipe_resource * (*resource_from_handle)(struct pipe_screen *,
const struct pipe_resource *templat,
struct winsys_handle *handle);
/**
* Get a winsys_handle from a texture. Some platforms/winsys requires
* that the texture is created with a special usage flag like
* DISPLAYTARGET or PRIMARY.
*/
boolean (*resource_get_handle)(struct pipe_screen *,
struct pipe_resource *tex,
struct winsys_handle *handle);
void (*resource_destroy)(struct pipe_screen *,
struct pipe_resource *pt);
/**
* Create a buffer that wraps user-space data.
*
* Effectively this schedules a delayed call to buffer_create
* followed by an upload of the data at *some point in the future*,
* or perhaps never. Basically the allocate/upload is delayed
* until the buffer is actually passed to hardware.
*
* The intention is to provide a quick way to turn regular data
* into a buffer, and secondly to avoid a copy operation if that
* data subsequently turns out to be only accessed by the CPU.
*
* Common example is OpenGL vertex buffers that are subsequently
* processed either by software TNL in the driver or by passing to
* hardware.
*
* XXX: What happens if the delayed call to buffer_create() fails?
*
* Note that ptr may be accessed at any time upto the time when the
* buffer is destroyed, so the data must not be freed before then.
*/
struct pipe_resource *(*user_buffer_create)(struct pipe_screen *screen,
void *ptr,
unsigned bytes,
unsigned bind_flags);
/**
* Do any special operations to ensure frontbuffer contents are
* displayed, eg copy fake frontbuffer.
* \param winsys_drawable_handle an opaque handle that the calling context
* gets out-of-band
*/
void (*flush_frontbuffer)( struct pipe_screen *screen,
struct pipe_resource *resource,
unsigned level, unsigned layer,
void *winsys_drawable_handle );
/** Set ptr = fence, with reference counting */
void (*fence_reference)( struct pipe_screen *screen,
struct pipe_fence_handle **ptr,
struct pipe_fence_handle *fence );
/**
* Checks whether the fence has been signalled.
* \param flags driver-specific meaning
* \return zero on success.
*/
int (*fence_signalled)( struct pipe_screen *screen,
struct pipe_fence_handle *fence,
unsigned flags );
/**
* Wait for the fence to finish.
* \param flags driver-specific meaning
* \return zero on success.
*/
int (*fence_finish)( struct pipe_screen *screen,
struct pipe_fence_handle *fence,
unsigned flags );
};
#ifdef __cplusplus
}
#endif
#endif /* P_SCREEN_H */
|
