org.lwjgl.opengles.EXTTextureView Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of lwjgl-opengles Show documentation

A royalty-free, cross-platform API for full-function 2D and 3D graphics on embedded systems - including consoles, phones, appliances and vehicles.

There is a newer version: 3.3.4

Show newest version

/*
 * Copyright LWJGL. All rights reserved.
 * License terms: https://www.lwjgl.org/license
 * MACHINE GENERATED FILE, DO NOT EDIT
 */
package org.lwjgl.opengles;

import static org.lwjgl.system.Checks.*;

/**
 * Native bindings to the EXT_texture_view extension.
 * 
 * This extension allows a texture's data store to be "viewed" in multiple ways, either reinterpreting the data format/type as a different format/ type
 * with the same element size, or by clamping the mipmap level range or array slice range.
 * 
 * The goals of this extension are to avoid having these alternate views become shared mutable containers of shared mutable objects, and to add the views
 * to the API in a minimally invasive way.
 * 
 * No new object types are added. Conceptually, a texture object is split into the following parts:
 * 
 * 
 * A data store holding texel data.
 * State describing which portions of the data store to use, and how to interpret the data elements.
 * An embedded sampler object.
 * Various other texture parameters.
 * 
 * 
 * With this extension, multiple textures can share a data store and have different state describing which portions of the data store to use and how to
 * interpret the data elements. The data store is refcounted and not destroyed until the last texture sharing it is deleted.
 * 
 * This extension leverages the concept of an "immutable texture". Views can only be created of textures created with TexStorage*.
 * 
 * Requires {@link GLES30 GLES 3.0}.
 */
public class EXTTextureView {

	/** Accepted by the {@code pname} parameters of GetTexParameterfv and GetTexParameteriv. */
	public static final int
		GL_TEXTURE_VIEW_MIN_LEVEL_EXT  = 0x82DB,
		GL_TEXTURE_VIEW_NUM_LEVELS_EXT = 0x82DC,
		GL_TEXTURE_VIEW_MIN_LAYER_EXT  = 0x82DD,
		GL_TEXTURE_VIEW_NUM_LAYERS_EXT = 0x82DE,
		GL_TEXTURE_IMMUTABLE_LEVELS    = 0x82DF;

	static { GLES.initialize(); }

	protected EXTTextureView() {
		throw new UnsupportedOperationException();
	}

	static boolean isAvailable(GLESCapabilities caps) {
		return checkFunctions(
			caps.glTextureViewEXT
		);
	}

	// --- [ glTextureViewEXT ] ---

	public static native void nglTextureViewEXT(int texture, int target, int origtexture, int internalformat, int minlevel, int numlevels, int minlayer, int numlayers);

	public static void glTextureViewEXT(int texture, int target, int origtexture, int internalformat, int minlevel, int numlevels, int minlayer, int numlayers) {
		nglTextureViewEXT(texture, target, origtexture, internalformat, minlevel, numlevels, minlayer, numlayers);
	}

}