org.lwjgl.opengles.EXTPVRTCSRGB Maven / Gradle / Ivy
Show all versions of lwjgl-opengles Show documentation
/*
* Copyright LWJGL. All rights reserved.
* License terms: https://www.lwjgl.org/license
* MACHINE GENERATED FILE, DO NOT EDIT
*/
package org.lwjgl.opengles;
/**
* Native bindings to the EXT_pvrtc_sRGB extension.
*
* The response from electronic display systems given RGB tristimulus values for each pixel is non-linear. Gamma correction is the process of encoding or
* decoding images in a manner that will correct for non-linear response profiles of output devices. The displayed results of gamma-corrected pixel data
* are more consistent and predictable for the author of such pixel data than it would otherwise be with linearly encoded pixel data.
*
* This EXT_pvrtc_sRGB extension specifies additional tokens for gamma corrected PVRTC compressed sRGB data.
*
* Texture assets are developed and evaluated for use in OpenGL applications using electronic displays with non-linear responses. This extension provides
* a better measure of consistency between textures developed within an asset toolchain and their final rendered result with an OpenGL application that
* uses those textures.
*
* Conventional OpenGL texture tristimulus values as well as their alpha component are encoded linearly. The textures introduced by this extension are
* encoded with gamma correction in the tristimulus components but linearly in the alpha component.
*
* When gamma corrected texture samples are fetched and operated on by ALU operations in an OpenGL shading program those samples will be converted from
* gamma corrected space to linear space for logical simplicity and performance of the shader.
*
* Texture filtering operations as well as mipmap generation are carried out in linear space.
*
* Requires {@link GLES20 GLES 2.0} and {@link IMGTextureCompressionPVRTC IMG_texture_compression_pvrtc}.
*/
public final class EXTPVRTCSRGB {
/**
* Accepted by the {@code internalformat} parameter of CompressedTexImage2D and TexStorage2DEXT and the {@code format} parameter of
* CompressedTexSubImage2D.
*/
public static final int
GL_COMPRESSED_SRGB_PVRTC_2BPPV1_EXT = 0x8A54,
GL_COMPRESSED_SRGB_PVRTC_4BPPV1_EXT = 0x8A55,
GL_COMPRESSED_SRGB_ALPHA_PVRTC_2BPPV1_EXT = 0x8A56,
GL_COMPRESSED_SRGB_ALPHA_PVRTC_4BPPV1_EXT = 0x8A57;
private EXTPVRTCSRGB() {}
}