91 lines
2.1 KiB
C++
91 lines
2.1 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef WEBGL_VERTEX_ATTRIB_DATA_H_
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#define WEBGL_VERTEX_ATTRIB_DATA_H_
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#include "GLDefs.h"
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#include "WebGLObjectModel.h"
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namespace mozilla {
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class WebGLBuffer;
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struct WebGLVertexAttribData
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{
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// note that these initial values are what GL initializes vertex attribs to
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WebGLVertexAttribData()
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: buf(0)
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, stride(0)
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, size(4)
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, divisor(0) // OpenGL ES 3.0 specs paragraphe 6.2 p240
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, byteOffset(0)
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, type(LOCAL_GL_FLOAT)
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, enabled(false)
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, normalized(false)
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, integer(false)
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{}
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WebGLRefPtr<WebGLBuffer> buf;
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GLuint stride;
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GLuint size;
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GLuint divisor;
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GLuint byteOffset;
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GLenum type;
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bool enabled;
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bool normalized;
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bool integer;
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GLuint componentSize() const {
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switch(type) {
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case LOCAL_GL_BYTE:
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return sizeof(GLbyte);
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case LOCAL_GL_UNSIGNED_BYTE:
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return sizeof(GLubyte);
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case LOCAL_GL_SHORT:
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return sizeof(GLshort);
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case LOCAL_GL_UNSIGNED_SHORT:
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return sizeof(GLushort);
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// case LOCAL_GL_FIXED:
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case LOCAL_GL_FLOAT:
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return sizeof(GLfloat);
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default:
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NS_ERROR("Should never get here!");
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return 0;
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}
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}
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GLuint actualStride() const {
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if (stride)
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return stride;
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return size * componentSize();
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}
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};
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} // namespace mozilla
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inline void
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ImplCycleCollectionUnlink(mozilla::WebGLVertexAttribData& field)
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{
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field.buf = nullptr;
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}
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inline void
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ImplCycleCollectionTraverse(nsCycleCollectionTraversalCallback& callback,
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mozilla::WebGLVertexAttribData& field,
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const char* name,
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uint32_t flags = 0)
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{
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CycleCollectionNoteChild(callback, field.buf.get(), name, flags);
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}
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#endif // WEBGL_VERTEX_ATTRIB_DATA_H_
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