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
|
/* 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 http://mozilla.org/MPL/2.0/. */
// https://www.khronos.org/registry/webgl/specs/latest/1.0/webgl.idl
use dom::bindings::codegen::Bindings::WebGLShaderBinding;
use dom::bindings::global::GlobalRef;
use dom::bindings::js::Root;
use dom::bindings::utils::reflect_dom_object;
use dom::webglobject::WebGLObject;
use dom::bindings::codegen::Bindings::WebGLRenderingContextBinding::WebGLRenderingContextConstants as constants;
use canvas_traits::{CanvasMsg, CanvasWebGLMsg, WebGLResult, WebGLError, WebGLShaderParameter};
use ipc_channel::ipc::{self, IpcSender};
use std::cell::Cell;
use std::cell::RefCell;
#[dom_struct]
pub struct WebGLShader {
webgl_object: WebGLObject,
id: u32,
gl_type: u32,
source: RefCell<Option<String>>,
is_deleted: Cell<bool>,
// TODO(ecoal95): Evaluate moving this to `WebGLObject`
#[ignore_heap_size_of = "Defined in ipc-channel"]
renderer: IpcSender<CanvasMsg>,
}
impl WebGLShader {
fn new_inherited(renderer: IpcSender<CanvasMsg>, id: u32, shader_type: u32) -> WebGLShader {
WebGLShader {
webgl_object: WebGLObject::new_inherited(),
id: id,
gl_type: shader_type,
source: RefCell::new(None),
is_deleted: Cell::new(false),
renderer: renderer,
}
}
pub fn maybe_new(global: GlobalRef,
renderer: IpcSender<CanvasMsg>,
shader_type: u32) -> Option<Root<WebGLShader>> {
let (sender, receiver) = ipc::channel().unwrap();
renderer.send(CanvasMsg::WebGL(CanvasWebGLMsg::CreateShader(shader_type, sender))).unwrap();
let result = receiver.recv().unwrap();
result.map(|shader_id| WebGLShader::new(global, renderer, *shader_id, shader_type))
}
pub fn new(global: GlobalRef,
renderer: IpcSender<CanvasMsg>,
id: u32,
shader_type: u32) -> Root<WebGLShader> {
reflect_dom_object(
box WebGLShader::new_inherited(renderer, id, shader_type), global, WebGLShaderBinding::Wrap)
}
}
pub trait WebGLShaderHelpers {
fn id(self) -> u32;
fn gl_type(self) -> u32;
fn compile(self);
fn delete(self);
fn info_log(self) -> Option<String>;
fn parameter(self, param_id: u32) -> WebGLResult<WebGLShaderParameter>;
fn source(self) -> Option<String>;
fn set_source(self, src: String);
}
impl<'a> WebGLShaderHelpers for &'a WebGLShader {
fn id(self) -> u32 {
self.id
}
fn gl_type(self) -> u32 {
self.gl_type
}
// TODO(ecoal95): Validate shaders to be conforming to the WebGL spec
/// glCompileShader
fn compile(self) {
self.renderer.send(CanvasMsg::WebGL(CanvasWebGLMsg::CompileShader(self.id))).unwrap()
}
/// Mark this shader as deleted (if it wasn't previously)
/// and delete it as if calling glDeleteShader.
fn delete(self) {
if !self.is_deleted.get() {
self.is_deleted.set(true);
self.renderer.send(CanvasMsg::WebGL(CanvasWebGLMsg::DeleteShader(self.id))).unwrap()
}
}
/// glGetShaderInfoLog
fn info_log(self) -> Option<String> {
let (sender, receiver) = ipc::channel().unwrap();
self.renderer.send(CanvasMsg::WebGL(CanvasWebGLMsg::GetShaderInfoLog(self.id, sender))).unwrap();
receiver.recv().unwrap()
}
/// glGetShaderParameter
fn parameter(self, param_id: u32) -> WebGLResult<WebGLShaderParameter> {
match param_id {
constants::SHADER_TYPE | constants::DELETE_STATUS | constants::COMPILE_STATUS => {},
_ => return Err(WebGLError::InvalidEnum),
}
let (sender, receiver) = ipc::channel().unwrap();
self.renderer.send(CanvasMsg::WebGL(CanvasWebGLMsg::GetShaderParameter(self.id, param_id, sender))).unwrap();
Ok(receiver.recv().unwrap())
}
/// Get the shader source
fn source(self) -> Option<String> {
self.source.borrow().clone()
}
/// glShaderSource
fn set_source(self, source: String) {
*self.source.borrow_mut() = Some(source.clone());
self.renderer.send(CanvasMsg::WebGL(CanvasWebGLMsg::ShaderSource(self.id, source))).unwrap()
}
}
|
