ARBTextureRG (LWJGL 3.1.1 SNAPSHOT - OpenGL)

java.lang.Object
- org.lwjgl.opengl.ARBTextureRG

```
public final class ARBTextureRG
extends java.lang.Object
```
Native bindings to the ARB_texture_rg extension.
Historically one- and two- component textures have been specified in OpenGL using the intensity, luminance or luminance-alpha (I/L/LA) formats. With the advent of programmable shaders and render-to-texture capabilites these legacy formats carry some historical artifacts which are no longer useful.

For example, when sampling from such textures, the luminance values are replicated across the color components, and the intensity values are replicated across both the color and alpha components. This is no longer necessary with programmable shaders.

It is also desirable to be able to render to one- and two- component format textures using capabilities such as framebuffer objects (FBO), but rendering to I/L/LA formats is under-specified (specifically how to map R/G/B/A values to I/L/A texture channels).

This extension adds new base internal formats for the one-component RED and two-component RG (red green) texture formats as well as sized internal formats for fixed-point, floating-point and pure integer texture formats. The new texure formats can be used for texturing as well as for rendering into with framebuffer objects.

Promoted to core in OpenGL 3.0.

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`GL_COMPRESSED_RED GL_COMPRESSED_RG GL_R16 GL_R16F GL_R16I GL_R16UI GL_R32F GL_R32I GL_R32UI GL_R8 GL_R8I GL_R8UI GL_RG` Accepted by the `internalFormat` parameter of TexImage1D, TexImage2D, TexImage3D, CopyTexImage1D, and CopyTexImage2D.
`static int`	`GL_RG_INTEGER` Accepted by the `format` parameter of TexImage1D, TexImage2D, TexImage3D, TexSubImage1D, TexSubImage2D, TexSubImage3D, and ReadPixels.
`static int`	`GL_RG16 GL_RG16F GL_RG16I GL_RG16UI GL_RG32F GL_RG32I GL_RG32UI GL_RG8 GL_RG8I GL_RG8UI` Accepted by the `internalFormat` parameter of TexImage1D, TexImage2D, TexImage3D, CopyTexImage1D, and CopyTexImage2D.

Method Summary
- Methods inherited from class java.lang.Object
  equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - GL_R8, GL_R16, GL_RG8, GL_RG16, GL_R16F, GL_R32F, GL_RG16F, GL_RG32F, GL_R8I, GL_R8UI, GL_R16I, GL_R16UI, GL_R32I, GL_R32UI, GL_RG8I, GL_RG8UI, GL_RG16I, GL_RG16UI, GL_RG32I, GL_RG32UI, GL_RG, GL_COMPRESSED_RED, GL_COMPRESSED_RG
    
    Accepted by the internalFormat parameter of TexImage1D, TexImage2D, TexImage3D, CopyTexImage1D, and CopyTexImage2D.
  - GL_RG_INTEGER
    
    Accepted by the format parameter of TexImage1D, TexImage2D, TexImage3D, TexSubImage1D, TexSubImage2D, TexSubImage3D, and ReadPixels.