org.lwjgl.opengl.EXTTextureCompressionRGTC Maven / Gradle / Ivy
/*
* Copyright LWJGL. All rights reserved.
* License terms: https://www.lwjgl.org/license
* MACHINE GENERATED FILE, DO NOT EDIT
*/
package org.lwjgl.opengl;
/**
* Native bindings to the EXT_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 ({@link GL11#GL_LUMINANCE8 LUMINANCE8} and {@link GL11#GL_LUMINANCE8_ALPHA8 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 {@link GL13 OpenGL 1.3} or {@link ARBTextureCompression ARB_texture_compression}.
*/
public final class EXTTextureCompressionRGTC {
/**
* Accepted by the {@code internalformat} parameter of TexImage2D, CopyTexImage2D, and CompressedTexImage2D and the {@code format} parameter of
* CompressedTexSubImage2D.
*/
public static final int
GL_COMPRESSED_RED_RGTC1_EXT = 0x8DBB,
GL_COMPRESSED_SIGNED_RED_RGTC1_EXT = 0x8DBC,
GL_COMPRESSED_RED_GREEN_RGTC2_EXT = 0x8DBD,
GL_COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT = 0x8DBE;
private EXTTextureCompressionRGTC() {}
}