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
|
/**************************************************************************
*
* Copyright 2006 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.
*
**************************************************************************/
#ifndef INTEL_FBO_H
#define INTEL_FBO_H
#include <stdbool.h>
#include "main/formats.h"
#include "intel_screen.h"
struct intel_context;
struct intel_texture_image;
/**
* Intel renderbuffer, derived from gl_renderbuffer.
*/
struct intel_renderbuffer
{
struct gl_renderbuffer Base;
struct intel_region *region;
/** Only used by depth renderbuffers for which HiZ is enabled. */
struct intel_region *hiz_region;
/**
* \name Packed depth/stencil unwrappers
*
* If the intel_context is using separate stencil and this renderbuffer has
* a a packed depth/stencil format, then wrapped_depth and wrapped_stencil
* are the real renderbuffers.
*/
struct gl_renderbuffer *wrapped_depth;
struct gl_renderbuffer *wrapped_stencil;
/** \} */
GLuint draw_offset; /**< Offset of drawing address within the region */
GLuint draw_x, draw_y; /**< Offset of drawing within the region */
};
/**
* gl_renderbuffer is a base class which we subclass. The Class field
* is used for simple run-time type checking.
*/
#define INTEL_RB_CLASS 0x12345678
/**
* Return a gl_renderbuffer ptr casted to intel_renderbuffer.
* NULL will be returned if the rb isn't really an intel_renderbuffer.
* This is determined by checking the ClassID.
*/
static INLINE struct intel_renderbuffer *
intel_renderbuffer(struct gl_renderbuffer *rb)
{
struct intel_renderbuffer *irb = (struct intel_renderbuffer *) rb;
if (irb && irb->Base.ClassID == INTEL_RB_CLASS) {
/*_mesa_warning(NULL, "Returning non-intel Rb\n");*/
return irb;
}
else
return NULL;
}
/**
* \brief Return the framebuffer attachment specified by attIndex.
*
* If the framebuffer lacks the specified attachment, then return null.
*
* If the attached renderbuffer is a wrapper, then return wrapped
* renderbuffer.
*/
static INLINE struct intel_renderbuffer *
intel_get_renderbuffer(struct gl_framebuffer *fb, gl_buffer_index attIndex)
{
struct gl_renderbuffer *rb;
struct intel_renderbuffer *irb;
/* XXX: Who passes -1 to intel_get_renderbuffer? */
if (attIndex < 0)
return NULL;
rb = fb->Attachment[attIndex].Renderbuffer;
if (!rb)
return NULL;
irb = intel_renderbuffer(rb);
if (!irb)
return NULL;
switch (attIndex) {
case BUFFER_DEPTH:
if (irb->wrapped_depth) {
irb = intel_renderbuffer(irb->wrapped_depth);
}
break;
case BUFFER_STENCIL:
if (irb->wrapped_stencil) {
irb = intel_renderbuffer(irb->wrapped_stencil);
}
break;
default:
break;
}
return irb;
}
/**
* If the framebuffer has a depth buffer attached, then return its HiZ region.
* The HiZ region may be null.
*/
static INLINE struct intel_region*
intel_framebuffer_get_hiz_region(struct gl_framebuffer *fb)
{
struct intel_renderbuffer *rb = NULL;
if (fb)
rb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
if (rb)
return rb->hiz_region;
else
return NULL;
}
static INLINE bool
intel_framebuffer_has_hiz(struct gl_framebuffer *fb)
{
return intel_framebuffer_get_hiz_region(fb) != NULL;
}
extern struct intel_renderbuffer *
intel_create_renderbuffer(gl_format format);
struct gl_renderbuffer*
intel_create_wrapped_renderbuffer(struct gl_context * ctx,
int width, int height,
gl_format format);
GLboolean
intel_alloc_renderbuffer_storage(struct gl_context * ctx,
struct gl_renderbuffer *rb,
GLenum internalFormat,
GLuint width, GLuint height);
extern void
intel_fbo_init(struct intel_context *intel);
extern void
intel_flip_renderbuffers(struct gl_framebuffer *fb);
void
intel_renderbuffer_set_draw_offset(struct intel_renderbuffer *irb,
struct intel_texture_image *intel_image,
int zoffset);
uint32_t
intel_renderbuffer_tile_offsets(struct intel_renderbuffer *irb,
uint32_t *tile_x,
uint32_t *tile_y);
static INLINE struct intel_region *
intel_get_rb_region(struct gl_framebuffer *fb, GLuint attIndex)
{
struct intel_renderbuffer *irb = intel_get_renderbuffer(fb, attIndex);
if (irb)
return irb->region;
else
return NULL;
}
#endif /* INTEL_FBO_H */
|
