org.lwjgl.opengl

Class ARBTextureCompressionRGTC

java.lang.Object

org.lwjgl.opengl.ARBTextureCompressionRGTC

public final class ARBTextureCompressionRGTC
extends java.lang.Object

Native bindings to the ARB_texture_compression_rgtc extension.

This extension introduces four new block-based texture compression formats suited for unsigned and signed red and red-green textures (hence the name "rgtc" for Red-Green Texture Compression).

These formats are designed to reduce the storage requirements and memory bandwidth required for red and red-green textures by a factor of 2-to-1 over conventional uncompressed luminance and luminance-alpha textures with 8-bit components (LUMINANCE8 and LUMINANCE8_ALPHA8).

The compressed signed red-green format is reasonably suited for storing compressed normal maps.

This extension uses the same compression format as the EXT_texture_compression_latc extension except the color data is stored in the red and green components rather than luminance and alpha. Representing compressed red and green components is consistent with the BC4 and BC5 compressed formats supported by DirectX 10.

Requires OpenGL 1.3 or ARB_texture_compression. Promoted to core in OpenGL 3.0.

Field Summary

Fields

Modifier and Type	Field and Description
static int	GL_COMPRESSED_RED_RGTC1 Accepted by the internalformat parameter of TexImage2D, CopyTexImage2D, and CompressedTexImage2D and the format parameter of CompressedTexSubImage2D.
static int	GL_COMPRESSED_RG_RGTC2 Accepted by the internalformat parameter of TexImage2D, CopyTexImage2D, and CompressedTexImage2D and the format parameter of CompressedTexSubImage2D.
static int	GL_COMPRESSED_SIGNED_RED_RGTC1 Accepted by the internalformat parameter of TexImage2D, CopyTexImage2D, and CompressedTexImage2D and the format parameter of CompressedTexSubImage2D.
static int	GL_COMPRESSED_SIGNED_RG_RGTC2 Accepted by the internalformat parameter of TexImage2D, CopyTexImage2D, and CompressedTexImage2D and the format parameter of CompressedTexSubImage2D.

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

GL_COMPRESSED_RED_RGTC1

public static final int GL_COMPRESSED_RED_RGTC1

Accepted by the internalformat parameter of TexImage2D, CopyTexImage2D, and CompressedTexImage2D and the format parameter of CompressedTexSubImage2D.

See Also:

Constant Field Values

GL_COMPRESSED_SIGNED_RED_RGTC1

public static final int GL_COMPRESSED_SIGNED_RED_RGTC1

Accepted by the internalformat parameter of TexImage2D, CopyTexImage2D, and CompressedTexImage2D and the format parameter of CompressedTexSubImage2D.

See Also:

Constant Field Values

GL_COMPRESSED_RG_RGTC2

public static final int GL_COMPRESSED_RG_RGTC2

Accepted by the internalformat parameter of TexImage2D, CopyTexImage2D, and CompressedTexImage2D and the format parameter of CompressedTexSubImage2D.

See Also:

Constant Field Values

GL_COMPRESSED_SIGNED_RG_RGTC2

public static final int GL_COMPRESSED_SIGNED_RG_RGTC2

Accepted by the internalformat parameter of TexImage2D, CopyTexImage2D, and CompressedTexImage2D and the format parameter of CompressedTexSubImage2D.

See Also:

Constant Field Values