xref: /foundation/graphic/graphic_2d/rosen/modules/effect/effectChain/src/mesh.cpp

/*
 * Copyright (c) 2022 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "mesh.h"

namespace OHOS {
namespace Rosen {
Mesh::Mesh()
{
    glGenVertexArrays(1, &VAO_);
    glGenBuffers(1, &VBO_);
    glGenBuffers(1, &EBO_);
}

Mesh::~Mesh()
{
    Delete();
}

void Mesh::Use()
{
    glBindVertexArray(VAO_);

    glBindBuffer(GL_ARRAY_BUFFER, VBO_);
    glBufferData(GL_ARRAY_BUFFER, sizeof(VERTICES), VERTICES, GL_STATIC_DRAW);

    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO_);
    glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(INDICES), INDICES, GL_STATIC_DRAW);

    glVertexAttribPointer(0, DEFAULT_VERTEX_POINT_SIZE, GL_FLOAT, GL_FALSE, DEFAULT_STRIDE * sizeof(float), (void*)0);
    glEnableVertexAttribArray(0);
    // color attribute
    glVertexAttribPointer(1, DEFAULT_TEXTURE_POINT_SIZE, GL_FLOAT, GL_FALSE,
        DEFAULT_STRIDE * sizeof(float), (void*)(DEFAULT_OFFSET * sizeof(float)));
    glEnableVertexAttribArray(1);
}

void Mesh::Delete()
{
    glDeleteVertexArrays(1, &VAO_);
    glDeleteBuffers(1, &VBO_);
    glDeleteBuffers(1, &EBO_);
}
} // namespcae Rosen
} // namespace OHOS