1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/canvas/src/WebGLVertexAttribData.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,81 @@
1.4 +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef WEBGLVERTEXATTRIBDATA_H_
1.10 +#define WEBGLVERTEXATTRIBDATA_H_
1.11 +
1.12 +namespace mozilla {
1.13 +
1.14 +class WebGLBuffer;
1.15 +
1.16 +struct WebGLVertexAttribData {
1.17 + // note that these initial values are what GL initializes vertex attribs to
1.18 + WebGLVertexAttribData()
1.19 + : buf(0)
1.20 + , stride(0)
1.21 + , size(4)
1.22 + , divisor(0) // OpenGL ES 3.0 specs paragraphe 6.2 p240
1.23 + , byteOffset(0)
1.24 + , type(LOCAL_GL_FLOAT)
1.25 + , enabled(false)
1.26 + , normalized(false)
1.27 + { }
1.28 +
1.29 + WebGLRefPtr<WebGLBuffer> buf;
1.30 + GLuint stride;
1.31 + GLuint size;
1.32 + GLuint divisor;
1.33 + GLuint byteOffset;
1.34 + GLenum type;
1.35 + bool enabled;
1.36 + bool normalized;
1.37 +
1.38 + GLuint componentSize() const {
1.39 + switch(type) {
1.40 + case LOCAL_GL_BYTE:
1.41 + return sizeof(GLbyte);
1.42 + break;
1.43 + case LOCAL_GL_UNSIGNED_BYTE:
1.44 + return sizeof(GLubyte);
1.45 + break;
1.46 + case LOCAL_GL_SHORT:
1.47 + return sizeof(GLshort);
1.48 + break;
1.49 + case LOCAL_GL_UNSIGNED_SHORT:
1.50 + return sizeof(GLushort);
1.51 + break;
1.52 + // XXX case LOCAL_GL_FIXED:
1.53 + case LOCAL_GL_FLOAT:
1.54 + return sizeof(GLfloat);
1.55 + break;
1.56 + default:
1.57 + NS_ERROR("Should never get here!");
1.58 + return 0;
1.59 + }
1.60 + }
1.61 +
1.62 + GLuint actualStride() const {
1.63 + if (stride) return stride;
1.64 + return size * componentSize();
1.65 + }
1.66 +};
1.67 +
1.68 +} // namespace mozilla
1.69 +
1.70 +inline void ImplCycleCollectionUnlink(mozilla::WebGLVertexAttribData& aField)
1.71 +{
1.72 + aField.buf = nullptr;
1.73 +}
1.74 +
1.75 +inline void
1.76 +ImplCycleCollectionTraverse(nsCycleCollectionTraversalCallback& aCallback,
1.77 + mozilla::WebGLVertexAttribData& aField,
1.78 + const char* aName,
1.79 + uint32_t aFlags = 0)
1.80 +{
1.81 + CycleCollectionNoteChild(aCallback, aField.buf.get(), aName, aFlags);
1.82 +}
1.83 +
1.84 +#endif
1.85 \ No newline at end of file
