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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "WebGLVertexArray.h"
#include "GLContext.h"
#include "mozilla/dom/WebGLRenderingContextBinding.h"
#include "WebGLBuffer.h"
#include "WebGLContext.h"
#include "WebGLVertexArrayGL.h"
#include "WebGLVertexArrayFake.h"
namespace mozilla {
WebGLVertexArray* WebGLVertexArray::Create(WebGLContext* webgl) {
if (webgl->gl->IsSupported(gl::GLFeature::vertex_array_object)) {
return new WebGLVertexArrayGL(webgl);
}
return new WebGLVertexArrayFake(webgl);
}
WebGLVertexArray::WebGLVertexArray(WebGLContext* const webgl)
: WebGLContextBoundObject(webgl) {
const webgl::VertAttribPointerDesc defaultDesc;
const webgl::VertAttribPointerCalculated defaultCalc;
for (const auto i : IntegerRange(mContext->MaxVertexAttribs())) {
AttribPointer(i, nullptr, defaultDesc, defaultCalc);
}
}
WebGLVertexArray::~WebGLVertexArray() = default;
Maybe<double> WebGLVertexArray::GetVertexAttrib(const uint32_t index,
const GLenum pname) const {
const auto& binding = mBindings[index];
const auto& desc = mDescs[index];
switch (pname) {
case LOCAL_GL_VERTEX_ATTRIB_ARRAY_STRIDE:
return Some(desc.byteStrideOrZero);
case LOCAL_GL_VERTEX_ATTRIB_ARRAY_SIZE:
return Some(desc.channels);
case LOCAL_GL_VERTEX_ATTRIB_ARRAY_TYPE:
return Some(desc.type);
case LOCAL_GL_VERTEX_ATTRIB_ARRAY_INTEGER:
return Some(desc.intFunc);
case LOCAL_GL_VERTEX_ATTRIB_ARRAY_DIVISOR:
return Some(binding.layout.divisor);
case LOCAL_GL_VERTEX_ATTRIB_ARRAY_ENABLED:
return Some(binding.layout.isArray);
case LOCAL_GL_VERTEX_ATTRIB_ARRAY_NORMALIZED:
return Some(desc.normalized);
case LOCAL_GL_VERTEX_ATTRIB_ARRAY_POINTER:
return Some(binding.layout.byteOffset);
default:
return {};
}
}
} // namespace mozilla
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