我正在尝试使实例渲染工作,但我似乎无法找到我的glBufferSubData给出1281异常(无效值)的原因。
这是我的代码:
FloatBuffer square_vertices_fb = BufferUtils.createFloatBuffer(16);
square_vertices_fb.put(square_vertices);
square_vertices_fb.rewind();
FloatBuffer instance_colors_fb = BufferUtils.createFloatBuffer(instance_colors.length);
instance_colors_fb.put(instance_colors);
instance_colors_fb.rewind();
FloatBuffer instance_positions_fb = BufferUtils.createFloatBuffer(instance_positions.length);
instance_positions_fb.put(instance_positions);
instance_positions_fb.rewind();
glBufferData(GL_ARRAY_BUFFER, square_vertices.length + instance_colors.length + instance_positions.length, GL_STATIC_DRAW);
System.out.println(Integer.toString(glGetError()));
glBufferSubData(GL_ARRAY_BUFFER, 0, square_vertices_fb);
System.out.println(Integer.toString(glGetError()));
glBufferSubData(GL_ARRAY_BUFFER, square_vertices.length, instance_colors_fb);
glBufferSubData(GL_ARRAY_BUFFER, square_vertices.length + instance_colors.length, instance_positions_fb);
我在第一次错误检查时得到0(没有错误),但在第一次glBufferSubData之后出现了1281错误。
关于这里有什么问题的任何想法?
答案 0 :(得分:0)
好的,我发现LWJGL的glBufferSubData需要以字节为单位的偏移量。问题已解决。