org.lwjgl.opengles

Class NVReadBuffer

java.lang.Object

org.lwjgl.opengles.NVReadBuffer

public class NVReadBuffer
extends java.lang.Object

Native bindings to the NV_read_buffer extension.

Unextended OpenGL ES 2.0 only supports using ReadPixels to read from the default color buffer of the currently-bound framebuffer. However, it is useful for debugging to be able to read from non-default color buffers. Particularly, when the NV_draw_buffers extension is supported, each framebuffer may contain multiple color buffers. This extension provides a mechanism to select which color buffer to read from.

The NV_read_buffer extension adds the command ReadBufferNV, which is used to select which color buffer of the currently-bound framebuffer to use as the source for subsequent calls to ReadPixels, CopyTexImage2D, and CopyTexSubImage2D. If the system-provided framebuffer is bound, then ReadBufferNV accepts value BACK. If a user-created FBO is bound, then ReadBufferNV accepts COLOR_ATTACHMENT0. Additionally, if the NV_draw_buffers extension is supported, ReadBufferNV accepts COLOR_ATTACHMENTn_NV (n is 0 to 15).

Field Summary

Fields

Modifier and Type	Field and Description
static int	GL_READ_BUFFER_NV Accepted by the pname parameter of GetIntegerv.

Method Summary

Modifier and Type	Method and Description
static void	glReadBufferNV(int mode)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

GL_READ_BUFFER_NV

public static final int GL_READ_BUFFER_NV

Accepted by the pname parameter of GetIntegerv.

See Also:

Constant Field Values

Method Detail

glReadBufferNV

public static void glReadBufferNV(int mode)