content/canvas/src/WebGLBuffer.cpp

branch
TOR_BUG_9701
changeset 11
deefc01c0e14
equal deleted inserted replaced
-1:000000000000 0:0abc88ec5453
1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 /* This Source Code Form is subject to the terms of the Mozilla Public
3 * License, v. 2.0. If a copy of the MPL was not distributed with this
4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
5
6 #include "WebGLBuffer.h"
7
8 #include "GLContext.h"
9 #include "mozilla/dom/WebGLRenderingContextBinding.h"
10 #include "WebGLContext.h"
11 #include "WebGLElementArrayCache.h"
12
13 using namespace mozilla;
14
15 WebGLBuffer::WebGLBuffer(WebGLContext *context)
16 : WebGLContextBoundObject(context)
17 , mHasEverBeenBound(false)
18 , mByteLength(0)
19 , mTarget(LOCAL_GL_NONE)
20 {
21 SetIsDOMBinding();
22 mContext->MakeContextCurrent();
23 mContext->gl->fGenBuffers(1, &mGLName);
24 mContext->mBuffers.insertBack(this);
25 }
26
27 WebGLBuffer::~WebGLBuffer() {
28 DeleteOnce();
29 }
30
31 void
32 WebGLBuffer::Delete() {
33 mContext->MakeContextCurrent();
34 mContext->gl->fDeleteBuffers(1, &mGLName);
35 mByteLength = 0;
36 mCache = nullptr;
37 LinkedListElement<WebGLBuffer>::remove(); // remove from mContext->mBuffers
38 }
39
40 void
41 WebGLBuffer::SetTarget(GLenum target) {
42 mTarget = target;
43 if (!mCache && mTarget == LOCAL_GL_ELEMENT_ARRAY_BUFFER)
44 mCache = new WebGLElementArrayCache;
45 }
46
47 bool
48 WebGLBuffer::ElementArrayCacheBufferData(const void* ptr, size_t buffer_size_in_bytes) {
49 if (mTarget == LOCAL_GL_ELEMENT_ARRAY_BUFFER)
50 return mCache->BufferData(ptr, buffer_size_in_bytes);
51 return true;
52 }
53
54 void
55 WebGLBuffer::ElementArrayCacheBufferSubData(size_t pos, const void* ptr, size_t update_size_in_bytes) {
56 if (mTarget == LOCAL_GL_ELEMENT_ARRAY_BUFFER)
57 mCache->BufferSubData(pos, ptr, update_size_in_bytes);
58 }
59
60 size_t
61 WebGLBuffer::SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
62 {
63 size_t sizeOfCache = mCache ? mCache->SizeOfIncludingThis(aMallocSizeOf) : 0;
64 return aMallocSizeOf(this) + sizeOfCache;
65 }
66
67 bool
68 WebGLBuffer::Validate(GLenum type, uint32_t max_allowed,
69 size_t first, size_t count,
70 uint32_t* out_upperBound)
71 {
72 return mCache->Validate(type, max_allowed, first, count, out_upperBound);
73 }
74
75
76 JSObject*
77 WebGLBuffer::WrapObject(JSContext *cx) {
78 return dom::WebGLBufferBinding::Wrap(cx, this);
79 }
80
81 NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_0(WebGLBuffer)
82
83 NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(WebGLBuffer, AddRef)
84 NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(WebGLBuffer, Release)

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