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

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A royalty-free, cross-platform API for full-function 2D and 3D graphics on embedded systems - including consoles, phones, appliances and vehicles.
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/*
 * Copyright LWJGL. All rights reserved.
 * License terms: https://www.lwjgl.org/license
 * MACHINE GENERATED FILE, DO NOT EDIT
 */
package org.lwjgl.opengles;

import java.nio.*;

import org.lwjgl.system.*;

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

/**
 * Native bindings to the EXT_clear_texture extension.
 * 
 * Texture objects are fundamental to the operation of OpenGL. They are used as a source for texture sampling and destination for rendering as well as
 * being accessed in shaders for image load/store operations It is also possible to invalidate the contents of a texture. It is currently only possible to
 * set texture image data to known values by uploading some or all of a image array from application memory or by attaching it to a framebuffer object and
 * using the {@code Clear} or {@code ClearBuffer} commands.
 * 
 * Both uploading initial texture data and clearing by attaching to a framebuffer have potential disadvantages when one simply wants to initialize texture
 * data to a known value. Uploading initial data requires the application to allocate a (potentially large) chunk of memory and transferring that to the
 * GL. This can be a costly operation both in terms of memory bandwidth and power usage. Alternatively, attaching a texture level to a framebuffer to
 * clear it may not be possible if the texture format isn't supported for rendering, or even if it is, attaching the image to a framebuffer object may
 * cause the texture to be allocated in certain types of memory, which it may otherwise not need to be placed in.
 * 
 * This extension solves these problems by providing a mechanism whereby the contents of a texture image array can be set to known values by using the
 * {@link #glClearTexImageEXT ClearTexImageEXT} or {@link #glClearTexSubImageEXT ClearTexSubImageEXT} commands. These commands can also be useful for initializing an image that will be used for atomic shader
 * operations.
 * 
 * Requires {@link GLES31 GLES 3.1}.
 */
public class EXTClearTexture {

    static { GLES.initialize(); }

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

    static boolean isAvailable(GLESCapabilities caps) {
        return checkFunctions(
            caps.glClearTexImageEXT, caps.glClearTexSubImageEXT
        );
    }

    // --- [ glClearTexImageEXT ] ---

    public static native void nglClearTexImageEXT(int texture, int level, int format, int type, long data);

    public static void glClearTexImageEXT(@NativeType("GLuint") int texture, @NativeType("GLint") int level, @NativeType("GLenum") int format, @NativeType("GLenum") int type, @NativeType("const void *") ByteBuffer data) {
        nglClearTexImageEXT(texture, level, format, type, memAddressSafe(data));
    }

    public static void glClearTexImageEXT(@NativeType("GLuint") int texture, @NativeType("GLint") int level, @NativeType("GLenum") int format, @NativeType("GLenum") int type, @NativeType("const void *") ShortBuffer data) {
        nglClearTexImageEXT(texture, level, format, type, memAddressSafe(data));
    }

    public static void glClearTexImageEXT(@NativeType("GLuint") int texture, @NativeType("GLint") int level, @NativeType("GLenum") int format, @NativeType("GLenum") int type, @NativeType("const void *") IntBuffer data) {
        nglClearTexImageEXT(texture, level, format, type, memAddressSafe(data));
    }

    public static void glClearTexImageEXT(@NativeType("GLuint") int texture, @NativeType("GLint") int level, @NativeType("GLenum") int format, @NativeType("GLenum") int type, @NativeType("const void *") FloatBuffer data) {
        nglClearTexImageEXT(texture, level, format, type, memAddressSafe(data));
    }

    // --- [ glClearTexSubImageEXT ] ---

    public static native void nglClearTexSubImageEXT(int texture, int level, int xoffset, int yoffset, int zoffset, int width, int height, int depth, int format, int type, long data);

    public static void glClearTexSubImageEXT(@NativeType("GLuint") int texture, @NativeType("GLint") int level, @NativeType("GLint") int xoffset, @NativeType("GLint") int yoffset, @NativeType("GLint") int zoffset, @NativeType("GLsizei") int width, @NativeType("GLsizei") int height, @NativeType("GLsizei") int depth, @NativeType("GLenum") int format, @NativeType("GLenum") int type, @NativeType("const void *") ByteBuffer data) {
        nglClearTexSubImageEXT(texture, level, xoffset, yoffset, zoffset, width, height, depth, format, type, memAddressSafe(data));
    }

    public static void glClearTexSubImageEXT(@NativeType("GLuint") int texture, @NativeType("GLint") int level, @NativeType("GLint") int xoffset, @NativeType("GLint") int yoffset, @NativeType("GLint") int zoffset, @NativeType("GLsizei") int width, @NativeType("GLsizei") int height, @NativeType("GLsizei") int depth, @NativeType("GLenum") int format, @NativeType("GLenum") int type, @NativeType("const void *") ShortBuffer data) {
        nglClearTexSubImageEXT(texture, level, xoffset, yoffset, zoffset, width, height, depth, format, type, memAddressSafe(data));
    }

    public static void glClearTexSubImageEXT(@NativeType("GLuint") int texture, @NativeType("GLint") int level, @NativeType("GLint") int xoffset, @NativeType("GLint") int yoffset, @NativeType("GLint") int zoffset, @NativeType("GLsizei") int width, @NativeType("GLsizei") int height, @NativeType("GLsizei") int depth, @NativeType("GLenum") int format, @NativeType("GLenum") int type, @NativeType("const void *") IntBuffer data) {
        nglClearTexSubImageEXT(texture, level, xoffset, yoffset, zoffset, width, height, depth, format, type, memAddressSafe(data));
    }

    public static void glClearTexSubImageEXT(@NativeType("GLuint") int texture, @NativeType("GLint") int level, @NativeType("GLint") int xoffset, @NativeType("GLint") int yoffset, @NativeType("GLint") int zoffset, @NativeType("GLsizei") int width, @NativeType("GLsizei") int height, @NativeType("GLsizei") int depth, @NativeType("GLenum") int format, @NativeType("GLenum") int type, @NativeType("const void *") FloatBuffer data) {
        nglClearTexSubImageEXT(texture, level, xoffset, yoffset, zoffset, width, height, depth, format, type, memAddressSafe(data));
    }

}