76 lines
2.1 KiB
C++
76 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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#include "WebGLVertexArrayFake.h"
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#include "GLContext.h"
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#include "WebGLContext.h"
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namespace mozilla {
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WebGLVertexArrayFake::WebGLVertexArrayFake(WebGLContext* webgl)
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: WebGLVertexArray(webgl)
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, mIsVAO(false)
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{ }
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void
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WebGLVertexArrayFake::BindVertexArrayImpl()
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{
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// Go through and re-bind all buffers and setup all
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// vertex attribute pointers
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gl::GLContext* gl = mContext->gl;
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WebGLRefPtr<WebGLVertexArray> prevVertexArray = mContext->mBoundVertexArray;
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mContext->mBoundVertexArray = this;
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WebGLRefPtr<WebGLBuffer> prevBuffer = mContext->mBoundArrayBuffer;
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mContext->BindBuffer(LOCAL_GL_ELEMENT_ARRAY_BUFFER, mElementArrayBuffer);
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for (size_t i = 0; i < mAttribs.Length(); ++i) {
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const WebGLVertexAttribData& vd = mAttribs[i];
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mContext->BindBuffer(LOCAL_GL_ARRAY_BUFFER, vd.buf);
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if (vd.integer) {
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gl->fVertexAttribIPointer(i, vd.size, vd.type, vd.stride,
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reinterpret_cast<const GLvoid*>(vd.byteOffset));
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} else {
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gl->fVertexAttribPointer(i, vd.size, vd.type, vd.normalized, vd.stride,
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reinterpret_cast<const GLvoid*>(vd.byteOffset));
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}
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if (vd.enabled)
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gl->fEnableVertexAttribArray(i);
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else
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gl->fDisableVertexAttribArray(i);
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}
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size_t len = prevVertexArray->mAttribs.Length();
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for (size_t i = mAttribs.Length(); i < len; ++i) {
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const WebGLVertexAttribData& vd = prevVertexArray->mAttribs[i];
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if (vd.enabled)
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gl->fDisableVertexAttribArray(i);
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}
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mContext->BindBuffer(LOCAL_GL_ARRAY_BUFFER, prevBuffer);
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mIsVAO = true;
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}
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void
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WebGLVertexArrayFake::DeleteImpl()
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{
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mIsVAO = false;
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}
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bool
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WebGLVertexArrayFake::IsVertexArrayImpl()
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{
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return mIsVAO;
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}
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} // namespace mozilla
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