зеркало из https://github.com/mozilla/gecko-dev.git
59 строки
1.7 KiB
C++
59 строки
1.7 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 "WebGLBuffer.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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void WebGLVertexArrayFake::BindVertexArray() {
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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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const auto& gl = mContext->gl;
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mContext->mBoundVertexArray = this;
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static_assert(IsBufferTargetLazilyBound(LOCAL_GL_ARRAY_BUFFER));
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static_assert(!IsBufferTargetLazilyBound(LOCAL_GL_ELEMENT_ARRAY_BUFFER));
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const auto fnBind = [&](const GLenum target, WebGLBuffer* const buffer) {
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gl->fBindBuffer(target, buffer ? buffer->mGLName : 0);
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};
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fnBind(LOCAL_GL_ELEMENT_ARRAY_BUFFER, mElementArrayBuffer);
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const bool useDivisor =
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mContext->IsWebGL2() ||
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mContext->IsExtensionEnabled(WebGLExtensionID::ANGLE_instanced_arrays);
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for (const auto i : IntegerRange(mContext->MaxVertexAttribs())) {
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const auto& binding = mBindings[i];
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const auto& desc = mDescs[i];
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if (binding.layout.isArray) {
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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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if (useDivisor) {
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gl->fVertexAttribDivisor(i, binding.layout.divisor);
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}
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fnBind(LOCAL_GL_ARRAY_BUFFER, binding.buffer);
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DoVertexAttribPointer(*gl, i, desc);
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}
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fnBind(LOCAL_GL_ARRAY_BUFFER, nullptr);
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}
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} // namespace mozilla
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