LWJGL：glDrawElements（）导致本机代码崩溃

Question

我正在尝试画一个基本的立方体;在这一点上，我甚至不打扰透视投影，只是试图在屏幕上得到一些没有崩溃的东西。当我使用以下错误消息调用glDrawElements()时发生崩溃：

# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x00007fff838fdbdd, pid=683, tid=1811
#
# JRE version: Java(TM) SE Runtime Environment (8.0_51-b16) (build 1.8.0_51-b16)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.51-b03 mixed mode bsd-amd64 compressed oops)
# Problematic frame:
# C  [GLEngine+0x159bdd]  gleRunVertexSubmitImmediate+0x42d
...
# The crash happened outside the Java Virtual Machine in native code.

我的立方体顶点和元素存储在文字数组中：

val cubeVertices = Array[Float] (
    // Front face
    -1.0f, -1.0f,  1.0f, 1.0f,
    1.0f, -1.0f,  1.0f, 1.0f,
    1.0f,  1.0f,  1.0f, 1.0f,
    -1.0f,  1.0f,  1.0f, 1.0f,
    ... // Other faces also defined in same manner
)

val cubeElements = Array[Short] (
    0,  1,  2,      0,  2,  3,    // front
    4,  5,  6,      4,  6,  7,    // back
    8,  9,  10,     8,  10, 11,   // top
    12, 13, 14,     12, 14, 15,   // bottom
    16, 17, 18,     16, 18, 19,   // right
    20, 21, 22,     20, 22, 23    // left
)

我的窗口创建代码如下：

glfwInit()

glfwDefaultWindowHints()
glfwWindowHint(GLFW_VISIBLE, GL_FALSE)
glfwWindowHint(GLFW_RESIZABLE, GL_FALSE)
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3)
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2)
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE)
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE)

val window = glfwCreateWindow(1024, 768, "Hello!", NULL, NULL)

glfwMakeContextCurrent(window)
glfwSwapInterval(1)

glfwShowWindow(window)

GLContext.createFromCurrent()

initDraw()

while (glfwWindowShouldClose(window) == GL_FALSE) {
  glfwWaitEvents()
  draw()
  glfwSwapBuffers(window)
}

initDraw()定义如下：

val cubeVertexNIOBuffer = createFloatBuffer(cubeVertices.length)
cubeVertexNIOBuffer.put(cubeVertices)
val cubeVertexBuffer = glGenBuffers()
glBindBuffer(GL_ARRAY_BUFFER, cubeVertexBuffer)
glBufferData(GL_ARRAY_BUFFER, cubeVertexNIOBuffer, GL_STATIC_DRAW)

val cubeElementNIOBuffer = createShortBuffer(cubeElements.length)
cubeElementNIOBuffer.put(cubeElements)
val cubeElementBuffer = glGenBuffers()
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, cubeElementBuffer)
glBufferData(GL_ELEMENT_ARRAY_BUFFER, cubeElementNIOBuffer, GL_STATIC_DRAW)

cubeVertexArray = glGenVertexArrays()
glBindVertexArray(cubeVertexArray)
glEnableVertexAttribArray(0)
glBindBuffer(GL_ARRAY_BUFFER, cubeVertexBuffer)
glVertexAttribPointer(0, 4, GL_FLOAT, false, 0, 0)
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, cubeElementBuffer)

... // Shader compilation and linking stuff

最后，draw()的定义如下：

glClearColor(0.0f, 0.0f, 0.0f, 1.0f)
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
glUseProgram(shaderProgram)
glBindVertexArray(cubeVertexArray)
glDrawElements(GL_TRIANGLES, 36, GL_UNSIGNED_SHORT, 0)

我已经确认glDrawElements()是罪魁祸首，因为代码会在呼叫被注释掉的时候运行而不会崩溃。我也非常确定着色器代码不应该受到指责，因为调用glUseProgram()不会产生OpenGL错误。

我还应该注意，定期调用glDrawArrays()会以同样的方式崩溃。