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• ARBTransformFeedbackInstanced.java

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org.lwjgl.opengl.ARBTransformFeedbackInstanced 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;

import org.lwjgl.system.*;

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

/**
 * Native bindings to the ARB_transform_feedback_instanced extension.
 * 
 * 
Multiple instances of geometry may be specified to the GL by calling functions such as {@link GL31#glDrawArraysInstanced DrawArraysInstanced} and {@link GL31#glDrawElementsInstanced DrawElementsInstanced}.
 * Further, the results of a transform feedback operation may be returned to the GL by calling {@link GL40#glDrawTransformFeedback DrawTransformFeedback}, or
 * {@link GL40#glDrawTransformFeedbackStream DrawTransformFeedbackStream}. However, it is not presently possible to draw multiple instances of data transform feedback without using a query
 * and the resulting round trip from server to client.
 * 
 * 
This extension adds functionality to draw multiple instances of the result of a transform feedback operation.
 * 
 * 
Requires {@link GL40 OpenGL 4.0} or {@link ARBTransformFeedback2 ARB_transform_feedback2}. Requires {@link GL31 OpenGL 3.1} or {@link ARBDrawInstanced ARB_draw_instanced}. Promoted to core in {@link GL42 OpenGL 4.2}.
 */
public class ARBTransformFeedbackInstanced {

    static { GL.initialize(); }

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

    static boolean isAvailable(GLCapabilities caps) {
        return checkFunctions(
            caps.glDrawTransformFeedbackInstanced, caps.glDrawTransformFeedbackStreamInstanced
        );
    }

    // --- [ glDrawTransformFeedbackInstanced ] ---

    /**
     * Renders multiple instances of primitives using a count derived from a transform feedback object.
     *
     * @param mode      what kind of primitives to render. One of:
{@link GL11#GL_POINTS POINTS}
{@link GL11#GL_LINE_STRIP LINE_STRIP}
{@link GL11#GL_LINE_LOOP LINE_LOOP}
{@link GL11#GL_LINES LINES}
{@link GL11#GL_POLYGON POLYGON}
{@link GL11#GL_TRIANGLE_STRIP TRIANGLE_STRIP}
{@link GL11#GL_TRIANGLE_FAN TRIANGLE_FAN}
{@link GL11#GL_TRIANGLES TRIANGLES}
{@link GL11#GL_QUAD_STRIP QUAD_STRIP}
{@link GL11#GL_QUADS QUADS}
{@link GL32#GL_LINES_ADJACENCY LINES_ADJACENCY}
{@link GL32#GL_LINE_STRIP_ADJACENCY LINE_STRIP_ADJACENCY}
{@link GL32#GL_TRIANGLES_ADJACENCY TRIANGLES_ADJACENCY}
{@link GL32#GL_TRIANGLE_STRIP_ADJACENCY TRIANGLE_STRIP_ADJACENCY}
{@link GL40#GL_PATCHES PATCHES}
     * @param id        the name of a transform feedback object from which to retrieve a primitive count
     * @param primcount the number of instances of the geometry to render
     */
    public static native void glDrawTransformFeedbackInstanced(@NativeType("GLenum") int mode, @NativeType("GLuint") int id, @NativeType("GLsizei") int primcount);

    // --- [ glDrawTransformFeedbackStreamInstanced ] ---

    /**
     * Renders multiple instances of primitives using a count derived from a specifed stream of a transform feedback object.
     *
     * @param mode      what kind of primitives to render. One of:
{@link GL11#GL_POINTS POINTS}
{@link GL11#GL_LINE_STRIP LINE_STRIP}
{@link GL11#GL_LINE_LOOP LINE_LOOP}
{@link GL11#GL_LINES LINES}
{@link GL11#GL_POLYGON POLYGON}
{@link GL11#GL_TRIANGLE_STRIP TRIANGLE_STRIP}
{@link GL11#GL_TRIANGLE_FAN TRIANGLE_FAN}
{@link GL11#GL_TRIANGLES TRIANGLES}
{@link GL11#GL_QUAD_STRIP QUAD_STRIP}
{@link GL11#GL_QUADS QUADS}
{@link GL32#GL_LINES_ADJACENCY LINES_ADJACENCY}
{@link GL32#GL_LINE_STRIP_ADJACENCY LINE_STRIP_ADJACENCY}
{@link GL32#GL_TRIANGLES_ADJACENCY TRIANGLES_ADJACENCY}
{@link GL32#GL_TRIANGLE_STRIP_ADJACENCY TRIANGLE_STRIP_ADJACENCY}
{@link GL40#GL_PATCHES PATCHES}
     * @param id        the name of a transform feedback object from which to retrieve a primitive count
     * @param stream    the index of the transform feedback stream from which to retrieve a primitive count
     * @param primcount the number of instances of the geometry to render
     */
    public static native void glDrawTransformFeedbackStreamInstanced(@NativeType("GLenum") int mode, @NativeType("GLuint") int id, @NativeType("GLuint") int stream, @NativeType("GLsizei") int primcount);

}