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
|
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
// https://www.khronos.org/registry/webgl/specs/latest/1.0/webgl.idl
use canvas_traits::webgl::{
is_gles, webgl_channel, WebGLCommand, WebGLError, WebGLRenderbufferId, WebGLResult,
};
use crate::dom::bindings::codegen::Bindings::EXTColorBufferHalfFloatBinding::EXTColorBufferHalfFloatConstants;
use crate::dom::bindings::codegen::Bindings::WEBGLColorBufferFloatBinding::WEBGLColorBufferFloatConstants;
use crate::dom::bindings::codegen::Bindings::WebGL2RenderingContextBinding::WebGL2RenderingContextConstants;
use crate::dom::bindings::codegen::Bindings::WebGLRenderbufferBinding;
use crate::dom::bindings::codegen::Bindings::WebGLRenderingContextBinding::WebGLRenderingContextConstants as constants;
use crate::dom::bindings::inheritance::Castable;
use crate::dom::bindings::reflector::{reflect_dom_object, DomObject};
use crate::dom::bindings::root::DomRoot;
use crate::dom::webglobject::WebGLObject;
use crate::dom::webglrenderingcontext::WebGLRenderingContext;
use dom_struct::dom_struct;
use std::cell::Cell;
#[dom_struct]
pub struct WebGLRenderbuffer {
webgl_object: WebGLObject,
id: WebGLRenderbufferId,
ever_bound: Cell<bool>,
is_deleted: Cell<bool>,
size: Cell<Option<(i32, i32)>>,
internal_format: Cell<Option<u32>>,
is_initialized: Cell<bool>,
}
impl WebGLRenderbuffer {
fn new_inherited(context: &WebGLRenderingContext, id: WebGLRenderbufferId) -> Self {
Self {
webgl_object: WebGLObject::new_inherited(context),
id: id,
ever_bound: Cell::new(false),
is_deleted: Cell::new(false),
internal_format: Cell::new(None),
size: Cell::new(None),
is_initialized: Cell::new(false),
}
}
pub fn maybe_new(context: &WebGLRenderingContext) -> Option<DomRoot<Self>> {
let (sender, receiver) = webgl_channel().unwrap();
context.send_command(WebGLCommand::CreateRenderbuffer(sender));
receiver
.recv()
.unwrap()
.map(|id| WebGLRenderbuffer::new(context, id))
}
pub fn new(context: &WebGLRenderingContext, id: WebGLRenderbufferId) -> DomRoot<Self> {
reflect_dom_object(
Box::new(WebGLRenderbuffer::new_inherited(context, id)),
&*context.global(),
WebGLRenderbufferBinding::Wrap,
)
}
}
impl WebGLRenderbuffer {
pub fn id(&self) -> WebGLRenderbufferId {
self.id
}
pub fn size(&self) -> Option<(i32, i32)> {
self.size.get()
}
pub fn internal_format(&self) -> u32 {
self.internal_format.get().unwrap_or(constants::RGBA4)
}
pub fn mark_initialized(&self) {
self.is_initialized.set(true);
}
pub fn is_initialized(&self) -> bool {
self.is_initialized.get()
}
pub fn bind(&self, target: u32) {
self.ever_bound.set(true);
self.upcast::<WebGLObject>()
.context()
.send_command(WebGLCommand::BindRenderbuffer(target, Some(self.id)));
}
pub fn delete(&self) {
if !self.is_deleted.get() {
self.is_deleted.set(true);
/*
If a renderbuffer object is deleted while its image is attached to the currently
bound framebuffer, then it is as if FramebufferRenderbuffer had been called, with
a renderbuffer of 0, for each attachment point to which this image was attached
in the currently bound framebuffer.
- GLES 2.0, 4.4.3, "Attaching Renderbuffer Images to a Framebuffer"
*/
let currently_bound_framebuffer =
self.upcast::<WebGLObject>().context().bound_framebuffer();
if let Some(fb) = currently_bound_framebuffer {
fb.detach_renderbuffer(self);
}
self.upcast::<WebGLObject>()
.context()
.send_command(WebGLCommand::DeleteRenderbuffer(self.id));
}
}
pub fn is_deleted(&self) -> bool {
self.is_deleted.get()
}
pub fn ever_bound(&self) -> bool {
self.ever_bound.get()
}
pub fn storage(&self, internal_format: u32, width: i32, height: i32) -> WebGLResult<()> {
// Validate the internal_format, and save it for completeness
// validation.
let actual_format = match internal_format {
constants::RGBA4 | constants::DEPTH_COMPONENT16 | constants::STENCIL_INDEX8 => {
internal_format
},
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#6.8
constants::DEPTH_STENCIL => WebGL2RenderingContextConstants::DEPTH24_STENCIL8,
constants::RGB5_A1 => {
// 16-bit RGBA formats are not supported on desktop GL.
if is_gles() {
constants::RGB5_A1
} else {
WebGL2RenderingContextConstants::RGBA8
}
},
constants::RGB565 => {
// RGB565 is not supported on desktop GL.
if is_gles() {
constants::RGB565
} else {
WebGL2RenderingContextConstants::RGB8
}
},
EXTColorBufferHalfFloatConstants::RGBA16F_EXT |
EXTColorBufferHalfFloatConstants::RGB16F_EXT => {
if !self
.upcast()
.context()
.extension_manager()
.is_half_float_buffer_renderable()
{
return Err(WebGLError::InvalidEnum);
}
internal_format
},
WEBGLColorBufferFloatConstants::RGBA32F_EXT => {
if !self
.upcast()
.context()
.extension_manager()
.is_float_buffer_renderable()
{
return Err(WebGLError::InvalidEnum);
}
internal_format
},
_ => return Err(WebGLError::InvalidEnum),
};
self.internal_format.set(Some(internal_format));
self.is_initialized.set(false);
self.upcast::<WebGLObject>()
.context()
.send_command(WebGLCommand::RenderbufferStorage(
constants::RENDERBUFFER,
actual_format,
width,
height,
));
self.size.set(Some((width, height)));
Ok(())
}
}
impl Drop for WebGLRenderbuffer {
fn drop(&mut self) {
self.delete();
}
}
|
