private boolean initBuffer(GL3 gl3) {

    ShortBuffer elementBuffer = GLBuffers.newDirectShortBuffer(elementData);
    FloatBuffer vertexBuffer = GLBuffers.newDirectFloatBuffer(vertexData);
    IntBuffer uniformBufferOffset = GLBuffers.newDirectIntBuffer(1);

    gl3.glGenBuffers(Buffer.MAX, bufferName);

    gl3.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, bufferName.get(Buffer.ELEMENT));
    gl3.glBufferData(GL_ELEMENT_ARRAY_BUFFER, elementSize, elementBuffer, GL_STATIC_DRAW);
    gl3.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);

    gl3.glBindBuffer(GL_ARRAY_BUFFER, bufferName.get(Buffer.VERTEX));
    gl3.glBufferData(GL_ARRAY_BUFFER, vertexSize, vertexBuffer, GL_STATIC_DRAW);
    gl3.glBindBuffer(GL_ARRAY_BUFFER, 0);

    gl3.glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, uniformBufferOffset);
    int uniformBlockSize = Math.max(Mat4.SIZE, uniformBufferOffset.get(0));

    gl3.glBindBuffer(GL_UNIFORM_BUFFER, bufferName.get(Buffer.TRANSFORM));
    gl3.glBufferData(GL_UNIFORM_BUFFER, uniformBlockSize, null, GL_DYNAMIC_DRAW);
    gl3.glBindBuffer(GL_UNIFORM_BUFFER, 0);

    BufferUtils.destroyDirectBuffer(elementBuffer);
    BufferUtils.destroyDirectBuffer(vertexBuffer);
    BufferUtils.destroyDirectBuffer(uniformBufferOffset);

    return checkError(gl3, "initBuffer");
  }
Esempio n. 2
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  @Override
  public void init(GLAutoDrawable glad) {
    GL3 gl3 = glad.getGL().getGL3();

    try {
      shaders.add(
          GLSLHelpers.createShader(gl3, getClass(), GL3.GL_VERTEX_SHADER, "glsl/simple_vs"));
      shaders.add(
          GLSLHelpers.createShader(gl3, getClass(), GL3.GL_FRAGMENT_SHADER, "glsl/simple_fs"));
      program = GLSLHelpers.createProgram(gl3, shaders);

      gl3.glGenVertexArrays(1, VAO, 0);
      gl3.glBindVertexArray(VAO[0]);

      gl3.glGenBuffers(1, VBO, 0);
      gl3.glBindBuffer(GL3.GL_ARRAY_BUFFER, VBO[0]);
      FloatBuffer buffer = GLBuffers.newDirectFloatBuffer(TRIANGLE);
      gl3.glBufferData(GL3.GL_ARRAY_BUFFER, buffer.capacity() * 4, buffer, GL3.GL_STATIC_DRAW);
      gl3.glEnableVertexAttribArray(0);
      gl3.glVertexAttribPointer(0, 2, GL3.GL_FLOAT, false, 0, 0);

      gl3.glBindVertexArray(0);
    } catch (Throwable t) {
      t.printStackTrace();
    }
  }
  private boolean initBuffer(GL3 gl3) {

    FloatBuffer vertexBuffer = GLBuffers.newDirectFloatBuffer(vertexData);

    gl3.glGenBuffers(1, bufferName);

    gl3.glBindBuffer(GL_ARRAY_BUFFER, bufferName.get(0));
    gl3.glBufferData(GL_ARRAY_BUFFER, vertexSize, vertexBuffer, GL_STATIC_DRAW);
    gl3.glBindBuffer(GL_ARRAY_BUFFER, 0);

    BufferUtils.destroyDirectBuffer(vertexBuffer);

    return checkError(gl3, "initBuffer");
  }
Esempio n. 4
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  private void initBuffers(GL3 gl3) {

    FloatBuffer vertexBuffer = GLBuffers.newDirectFloatBuffer(vertexData);
    ShortBuffer elementBuffer = GLBuffers.newDirectShortBuffer(elementData);

    gl3.glGenBuffers(Buffer.MAX, bufferName);
    gl3.glBindBuffer(GL_ARRAY_BUFFER, bufferName.get(Buffer.VERTEX));
    {
      gl3.glBufferData(GL_ARRAY_BUFFER, vertexSize, vertexBuffer, GL_STATIC_DRAW);
    }
    gl3.glBindBuffer(GL_ARRAY_BUFFER, 0);

    gl3.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, bufferName.get(Buffer.ELEMENT));
    {
      gl3.glBufferData(GL_ELEMENT_ARRAY_BUFFER, elementSize, elementBuffer, GL_STATIC_DRAW);
    }
    gl3.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);

    BufferUtils.destroyDirectBuffer(vertexBuffer);
    BufferUtils.destroyDirectBuffer(elementBuffer);

    checkError(gl3, "initBuffers");
  }