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
|
/**************************************************************************
*
* Copyright 2003 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.
*
**************************************************************************/
#include "main/imports.h"
#include "main/context.h"
#include "main/framebuffer.h"
#include "main/renderbuffer.h"
#include "st_public.h"
#include "st_context.h"
#include "st_cb_fbo.h"
#include "pipe/p_defines.h"
#include "pipe/p_context.h"
struct st_framebuffer *
st_create_framebuffer( const __GLcontextModes *visual,
enum pipe_format colorFormat,
enum pipe_format depthFormat,
enum pipe_format stencilFormat,
uint width, uint height,
void *private)
{
struct st_framebuffer *stfb = CALLOC_STRUCT(st_framebuffer);
if (stfb) {
_mesa_initialize_framebuffer(&stfb->Base, visual);
{
/* fake frontbuffer */
/* XXX allocation should only happen in the unusual case
it's actually needed */
struct gl_renderbuffer *rb
= st_new_renderbuffer_fb(colorFormat);
_mesa_add_renderbuffer(&stfb->Base, BUFFER_FRONT_LEFT, rb);
}
if (visual->doubleBufferMode) {
struct gl_renderbuffer *rb
= st_new_renderbuffer_fb(colorFormat);
_mesa_add_renderbuffer(&stfb->Base, BUFFER_BACK_LEFT, rb);
}
if (visual->depthBits == 24 && visual->stencilBits == 8) {
/* combined depth/stencil buffer */
struct gl_renderbuffer *depthStencilRb
= st_new_renderbuffer_fb(depthFormat);
/* note: bind RB to two attachment points */
_mesa_add_renderbuffer(&stfb->Base, BUFFER_DEPTH, depthStencilRb);
_mesa_add_renderbuffer(&stfb->Base, BUFFER_STENCIL, depthStencilRb);
}
else {
/* separate depth and/or stencil */
if (visual->depthBits == 32) {
/* 32-bit depth buffer */
struct gl_renderbuffer *depthRb
= st_new_renderbuffer_fb(depthFormat);
_mesa_add_renderbuffer(&stfb->Base, BUFFER_DEPTH, depthRb);
}
else if (visual->depthBits == 24) {
/* 24-bit depth buffer, ignore stencil bits */
struct gl_renderbuffer *depthRb
= st_new_renderbuffer_fb(depthFormat);
_mesa_add_renderbuffer(&stfb->Base, BUFFER_DEPTH, depthRb);
}
else if (visual->depthBits > 0) {
/* 16-bit depth buffer */
struct gl_renderbuffer *depthRb
= st_new_renderbuffer_fb(depthFormat);
_mesa_add_renderbuffer(&stfb->Base, BUFFER_DEPTH, depthRb);
}
if (visual->stencilBits > 0) {
/* 8-bit stencil */
struct gl_renderbuffer *stencilRb
= st_new_renderbuffer_fb(stencilFormat);
_mesa_add_renderbuffer(&stfb->Base, BUFFER_STENCIL, stencilRb);
}
}
if (visual->accumRedBits > 0) {
/* 16-bit/channel accum */
struct gl_renderbuffer *accumRb
= st_new_renderbuffer_fb(PIPE_FORMAT_R16G16B16A16_SNORM);
_mesa_add_renderbuffer(&stfb->Base, BUFFER_ACCUM, accumRb);
}
stfb->Base.Initialized = GL_TRUE;
stfb->InitWidth = width;
stfb->InitHeight = height;
stfb->Private = private;
}
return stfb;
}
void st_resize_framebuffer( struct st_framebuffer *stfb,
uint width, uint height )
{
if (stfb->Base.Width != width || stfb->Base.Height != height) {
GET_CURRENT_CONTEXT(ctx);
if (ctx) {
_mesa_resize_framebuffer(ctx, &stfb->Base, width, height);
assert(stfb->Base.Width == width);
assert(stfb->Base.Height == height);
}
}
}
void st_unreference_framebuffer( struct st_framebuffer **stfb )
{
_mesa_unreference_framebuffer((struct gl_framebuffer **) stfb);
}
/**
* Return the pipe_surface for the given renderbuffer.
*/
struct pipe_surface *
st_get_framebuffer_surface(struct st_framebuffer *stfb, uint surfIndex)
{
struct st_renderbuffer *strb;
assert(surfIndex <= ST_SURFACE_DEPTH);
/* sanity checks, ST tokens should match Mesa tokens */
assert(ST_SURFACE_FRONT_LEFT == BUFFER_FRONT_LEFT);
assert(ST_SURFACE_BACK_RIGHT == BUFFER_BACK_RIGHT);
strb = st_renderbuffer(stfb->Base.Attachment[surfIndex].Renderbuffer);
if (strb)
return strb->surface;
return NULL;
}
/**
* This function is to be called prior to SwapBuffers on the given
* framebuffer. It checks if the current context is bound to the framebuffer
* and flushes rendering if needed.
*/
void
st_notify_swapbuffers(struct st_framebuffer *stfb)
{
GET_CURRENT_CONTEXT(ctx);
if (ctx && ctx->DrawBuffer == &stfb->Base) {
st_flush( ctx->st,
PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_SWAPBUFFERS);
}
}
/**
* Quick hack - allows the winsys to inform the driver that surface
* states are now undefined after a glXSwapBuffers or similar.
*/
void
st_notify_swapbuffers_complete(struct st_framebuffer *stfb)
{
GET_CURRENT_CONTEXT(ctx);
if (ctx && ctx->DrawBuffer == &stfb->Base) {
struct st_renderbuffer *strb;
int i;
for (i = 0; i < BUFFER_COUNT; i++) {
if (stfb->Base.Attachment[i].Renderbuffer) {
strb = st_renderbuffer(stfb->Base.Attachment[i].Renderbuffer);
strb->surface->status = PIPE_SURFACE_STATUS_UNDEFINED;
}
}
}
}
void *st_framebuffer_private( struct st_framebuffer *stfb )
{
return stfb->Private;
}
|
