org.lwjgl.opengles

Class ANGLEInstancedArrays

java.lang.Object

org.lwjgl.opengles.ANGLEInstancedArrays

public class ANGLEInstancedArrays
extends java.lang.Object

Native bindings to the ANGLE_instanced_arrays extension.

A common use case in GL for some applications is to be able to draw the same object, or groups of similar objects that share vertex data, primitive count and type, multiple times. This extension provides a means of accelerating such use cases while restricting the number of API calls, and keeping the amount of duplicate data to a minimum.

This extension introduces an array "divisor" for generic vertex array attributes, which when non-zero specifies that the attribute is "instanced." An instanced attribute does not advance per-vertex as usual, but rather after every divisor conceptual draw calls.

(Attributes which aren't instanced are repeated in their entirety for every conceptual draw call.)

By specifying transform data in an instanced attribute or series of instanced attributes, vertex shaders can, in concert with the instancing draw calls, draw multiple instances of an object with one draw call.

Requires GLES 2.0.

Field Summary

Fields

Modifier and Type	Field and Description
static int	GL_VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE Accepted by the pname parameters of GetVertexAttribfv and GetVertexAttribiv.

Method Summary

Modifier and Type	Method and Description
static void	glDrawArraysInstancedANGLE(int mode, int first, int count, int primcount)
static void	glDrawElementsInstancedANGLE(int mode, java.nio.ByteBuffer indices, int primcount)
static void	glDrawElementsInstancedANGLE(int mode, java.nio.IntBuffer indices, int primcount)
static void	glDrawElementsInstancedANGLE(int mode, int type, java.nio.ByteBuffer indices, int primcount)
static void	glDrawElementsInstancedANGLE(int mode, int count, int type, long indices, int primcount)
static void	glDrawElementsInstancedANGLE(int mode, java.nio.ShortBuffer indices, int primcount)
static void	glVertexAttribDivisorANGLE(int index, int divisor)
static void	nglDrawElementsInstancedANGLE(int mode, int count, int type, long indices, int primcount)

Methods inherited from class java.lang.Object

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

Field Detail

GL_VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE

public static final int GL_VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE

Accepted by the pname parameters of GetVertexAttribfv and GetVertexAttribiv.

See Also:

Constant Field Values

Method Detail

glDrawArraysInstancedANGLE

public static void glDrawArraysInstancedANGLE(int mode,
                                              int first,
                                              int count,
                                              int primcount)

nglDrawElementsInstancedANGLE

public static void nglDrawElementsInstancedANGLE(int mode,
                                                 int count,
                                                 int type,
                                                 long indices,
                                                 int primcount)

glDrawElementsInstancedANGLE

public static void glDrawElementsInstancedANGLE(int mode,
                                                int count,
                                                int type,
                                                long indices,
                                                int primcount)

glDrawElementsInstancedANGLE

public static void glDrawElementsInstancedANGLE(int mode,
                                                int type,
                                                java.nio.ByteBuffer indices,
                                                int primcount)

glDrawElementsInstancedANGLE

public static void glDrawElementsInstancedANGLE(int mode,
                                                java.nio.ByteBuffer indices,
                                                int primcount)

glDrawElementsInstancedANGLE

public static void glDrawElementsInstancedANGLE(int mode,
                                                java.nio.ShortBuffer indices,
                                                int primcount)

glDrawElementsInstancedANGLE

public static void glDrawElementsInstancedANGLE(int mode,
                                                java.nio.IntBuffer indices,
                                                int primcount)

glVertexAttribDivisorANGLE

public static void glVertexAttribDivisorANGLE(int index,
                                              int divisor)