public void draw(GL3 gl, ShaderProgram program) {
vbo.bind(gl);
program.linkAttribs(gl, vbo.getAttribs());
gl.glDrawArrays(GL3.GL_POINTS, 0, numParticles);
}
@Override
public void display(GLAutoDrawable glad) {
System.out.println("display");
GL3 gl3 = glad.getGL().getGL3();
gl3.glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
gl3.glClear(GL3.GL_COLOR_BUFFER_BIT);
programObject.bind(gl3);
{
programObject.setUniform(gl3, "offset", new float[] {0.5f, 0.5f}, 2);
gl3.glBindBuffer(GL3.GL_ARRAY_BUFFER, vertexBufferObject[0]);
gl3.glEnableVertexAttribArray(0);
gl3.glEnableVertexAttribArray(1);
{
gl3.glVertexAttribPointer(0, 4, GL3.GL_FLOAT, false, 0, 0);
gl3.glVertexAttribPointer(1, 4, GL3.GL_FLOAT, false, 0, 36 * 4 * 4);
gl3.glDrawArrays(GL3.GL_TRIANGLES, 0, 36);
}
gl3.glDisableVertexAttribArray(0);
gl3.glDisableVertexAttribArray(1);
}
programObject.unbind(gl3);
glad.swapBuffers();
}