michael@0: /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "WebGLContext.h"
michael@0: #include "WebGLBuffer.h"
michael@0: #include "WebGLVertexAttribData.h"
michael@0: #include "WebGLVertexArray.h"
michael@0: #include "GLContext.h"
michael@0: 
michael@0: using namespace mozilla;
michael@0: 
michael@0: void
michael@0: WebGLContext::BindVertexArray(WebGLVertexArray *array)
michael@0: {
michael@0:     if (IsContextLost())
michael@0:         return;
michael@0: 
michael@0:     if (!ValidateObjectAllowDeletedOrNull("bindVertexArrayObject", array))
michael@0:         return;
michael@0: 
michael@0:     if (array && array->IsDeleted()) {
michael@0:         /* http://www.khronos.org/registry/gles/extensions/OES/OES_vertex_array_object.txt
michael@0:          * BindVertexArrayOES fails and an INVALID_OPERATION error is
michael@0:          * generated if array is not a name returned from a previous call to
michael@0:          * GenVertexArraysOES, or if such a name has since been deleted with
michael@0:          * DeleteVertexArraysOES
michael@0:          */
michael@0:         ErrorInvalidOperation("bindVertexArray: can't bind a deleted array!");
michael@0:         return;
michael@0:     }
michael@0: 
michael@0:     InvalidateBufferFetching();
michael@0: 
michael@0:     MakeContextCurrent();
michael@0: 
michael@0:     if (array) {
michael@0:         gl->fBindVertexArray(array->GLName());
michael@0:         array->SetHasEverBeenBound(true);
michael@0:         mBoundVertexArray = array;
michael@0:     }
michael@0:     else {
michael@0:         gl->fBindVertexArray(0);
michael@0:         mBoundVertexArray = mDefaultVertexArray;
michael@0:     }
michael@0: }
michael@0: 
michael@0: already_AddRefed<WebGLVertexArray>
michael@0: WebGLContext::CreateVertexArray()
michael@0: {
michael@0:     if (IsContextLost())
michael@0:         return nullptr;
michael@0: 
michael@0:     nsRefPtr<WebGLVertexArray> globj = new WebGLVertexArray(this);
michael@0: 
michael@0:     MakeContextCurrent();
michael@0:     gl->fGenVertexArrays(1, &globj->mGLName);
michael@0: 
michael@0:     mVertexArrays.insertBack(globj);
michael@0: 
michael@0:     return globj.forget();
michael@0: }
michael@0: 
michael@0: void
michael@0: WebGLContext::DeleteVertexArray(WebGLVertexArray *array)
michael@0: {
michael@0:     if (IsContextLost())
michael@0:         return;
michael@0: 
michael@0:     if (array == nullptr)
michael@0:         return;
michael@0: 
michael@0:     if (array->IsDeleted())
michael@0:         return;
michael@0: 
michael@0:     if (mBoundVertexArray == array)
michael@0:         BindVertexArray(static_cast<WebGLVertexArray*>(nullptr));
michael@0: 
michael@0:     array->RequestDelete();
michael@0: }
michael@0: 
michael@0: bool
michael@0: WebGLContext::IsVertexArray(WebGLVertexArray *array)
michael@0: {
michael@0:     if (IsContextLost())
michael@0:         return false;
michael@0: 
michael@0:     if (!array)
michael@0:         return false;
michael@0: 
michael@0:     return ValidateObjectAllowDeleted("isVertexArray", array) &&
michael@0:            !array->IsDeleted() &&
michael@0:            array->HasEverBeenBound();
michael@0: }
michael@0: 
michael@0: