Question

我有一个VBO，IBO和VAO设置如下：

void createVBO()
{
    // Create the IBO and VBO data
    GLuint* iboData = new GLuint[m_zIndexCount];
    Vertex* vboData = new Vertex[m_zVertexCount];

    int iboPos = 0;
    int vboPos = 0;

    // Create the VBO and IBO
    for(int i = 0; i < m_zFragMap[0x36]; i++)
    {
        // Copy the data to the IBO
        memcpy(&iboData[iboPos], m_zMeshes[i]->m_indices, m_zMeshes[i]->m_polyCount * 3 * sizeof(GLuint));//sizeof(*zoneMeshes[i].indices));

        // Advance the position
        iboPos += m_zMeshes[i]->m_polyCount * 3;

        // Copy the data to the VBO
        memcpy(&vboData[vboPos], m_zMeshes[i]->m_vertices, m_zMeshes[i]->m_vertCount * sizeof(Vertex));//sizeof(*zoneMeshes[i].vertices));

        // Advance the position
        vboPos += m_zMeshes[i]->m_vertCount;
    }

    glGenBuffers(1, &m_zVBO);
    glBindBuffer(GL_ARRAY_BUFFER, m_zVBO);
    glBufferData(GL_ARRAY_BUFFER, m_zVertexCount * sizeof(Vertex), vboData, GL_STATIC_DRAW);
    glBindBuffer(GL_ARRAY_BUFFER, 0);

    glGenBuffers(1, &m_zIBO);
    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_zIBO);
    glBufferData(GL_ELEMENT_ARRAY_BUFFER, m_zIndexCount * sizeof(GLuint), iboData, GL_STATIC_DRAW);
    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);

    // Create the VAO
    glGenVertexArrays(1, &m_zVAO);
    glBindVertexArray(m_zVAO);
    glBindBuffer(GL_ARRAY_BUFFER, m_zVBO);
    glEnableVertexAttribArray(0);
    glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), 0);
    glEnableVertexAttribArray(1);
    glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), BUFFER_OFFSET(sizeof(float) * 3));
    glEnableVertexAttribArray(2);
    glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, sizeof(Vertex), BUFFER_OFFSET(sizeof(float) * 6));
    glEnableVertexAttribArray(3);
    glVertexAttribPointer(3, 4, GL_FLOAT, GL_FALSE, sizeof(Vertex), BUFFER_OFFSET(sizeof(float) * 8));
    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER,m_zIBO);
    glBindVertexArray(0);

}

我已经输出了VBO和IBO数据中的数据，并且它具有正确的副本。

我将相机矩阵发送到着色器（我已经用一个简单的三角形进行了测试，它已经工作了）。

这是我的渲染（着色器已设置并正常工作）：

// Bind the VAO
glBindVertexArray(zone->m_zVAO);

glDrawElements(GL_TRIANGLES, zone->m_zIndexCount, GL_UNSIGNED_INT, (void*)(0));

看起来复制到IBO或VBO时出现问题。有没有人看到任何与代码有关的东西？

从VBO渲染的麻烦

0 个答案: