Package org.lwjgl.opengl

Class ARBTransformFeedbackInstanced

java.lang.Object

org.lwjgl.opengl.ARBTransformFeedbackInstanced

public class ARBTransformFeedbackInstanced
extends Object

Native bindings to the ARB_transform_feedback_instanced extension.

Multiple instances of geometry may be specified to the GL by calling functions such as DrawArraysInstanced and DrawElementsInstanced. Further, the results of a transform feedback operation may be returned to the GL by calling DrawTransformFeedback, or 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 OpenGL 4.0 or ARB_transform_feedback2. Requires OpenGL 3.1 or ARB_draw_instanced. Promoted to core in OpenGL 4.2.

Method Summary

Modifier and Type	Method	Description
static void	glDrawTransformFeedbackInstanced(int mode, int id, int primcount)	Renders multiple instances of primitives using a count derived from a transform feedback object.
static void	glDrawTransformFeedbackStreamInstanced(int mode, int id, int stream, int primcount)	Renders multiple instances of primitives using a count derived from a specifed stream of a transform feedback object.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

glDrawTransformFeedbackInstanced

public static void glDrawTransformFeedbackInstanced(int mode,
 int id,
 int primcount)

Renders multiple instances of primitives using a count derived from a transform feedback object.

Parameters:

mode - what kind of primitives to render. One of:

POINTS	LINE_STRIP	LINE_LOOP	LINES	TRIANGLE_STRIP	TRIANGLE_FAN	TRIANGLES
LINES_ADJACENCY	LINE_STRIP_ADJACENCY	TRIANGLES_ADJACENCY	TRIANGLE_STRIP_ADJACENCY	PATCHES	POLYGON	QUADS
QUAD_STRIP

id - the name of a transform feedback object from which to retrieve a primitive count

primcount - the number of instances of the geometry to render

glDrawTransformFeedbackStreamInstanced

public static void glDrawTransformFeedbackStreamInstanced(int mode,
 int id,
 int stream,
 int primcount)

Renders multiple instances of primitives using a count derived from a specifed stream of a transform feedback object.

Parameters:

mode - what kind of primitives to render. One of:

POINTS	LINE_STRIP	LINE_LOOP	LINES	TRIANGLE_STRIP	TRIANGLE_FAN	TRIANGLES
LINES_ADJACENCY	LINE_STRIP_ADJACENCY	TRIANGLES_ADJACENCY	TRIANGLE_STRIP_ADJACENCY	PATCHES	POLYGON	QUADS
QUAD_STRIP

id - the name of a transform feedback object from which to retrieve a primitive count

stream - the index of the transform feedback stream from which to retrieve a primitive count

primcount - the number of instances of the geometry to render