Package org.lwjgl.opengl

Class ARBVertexAttribBinding

java.lang.Object

org.lwjgl.opengl.ARBVertexAttribBinding

public class ARBVertexAttribBinding
extends java.lang.Object

Native bindings to the ARB_vertex_attrib_binding extension.

OpenGL currently supports (at least) 16 vertex attributes and 16 vertex buffer bindings, with a fixed mapping between vertex attributes and vertex buffer bindings. This extension allows the application to change the mapping between attributes and bindings, which can make it more efficient to update vertex buffer bindings for interleaved vertex formats where many attributes share the same buffer.

This extension also separates the vertex binding update from the vertex attribute format update, which saves applications the effort of redundantly specifying the same format state over and over.

Conceptually, this extension splits the state for generic vertex attribute arrays into:

• An array of vertex buffer binding points, each of which specifies:
  • a bound buffer object
  • a starting offset for the vertex attribute data in that buffer object
  • a stride used by all attributes using that binding point, and
  • a frequency divisor used by all attributes using that binding point.
• An array of generic vertex attribute format information records, each of which specifies:
  • a reference to one of the new buffer binding points above
  • a component count and format, and a normalization flag for the attribute data, and
  • the offset of the attribute data relative to the base offset of each vertex found at the associated binding point.

Promoted to core in OpenGL 4.3.

Field Summary

Fields

Modifier and Type	Field and Description
static int	GL_MAX_VERTEX_ATTRIB_BINDINGS GL_MAX_VERTEX_ATTRIB_RELATIVE_OFFSET Accepted by the pname parameter of GetIntegerv, ....
static int	GL_VERTEX_ATTRIB_BINDING GL_VERTEX_ATTRIB_RELATIVE_OFFSET Accepted by the pname parameter of GetVertexAttrib*v.
static int	GL_VERTEX_BINDING_BUFFER GL_VERTEX_BINDING_DIVISOR GL_VERTEX_BINDING_OFFSET GL_VERTEX_BINDING_STRIDE Accepted by the target parameter of GetBooleani_v, GetIntegeri_v, GetFloati_v, GetDoublei_v, and GetInteger64i_v.

Method Summary

Modifier and Type	Method and Description
static void	glBindVertexBuffer(int bindingindex, int buffer, long offset, int stride) Binds a buffer to a vertex buffer bind point.
static void	glVertexArrayBindVertexBufferEXT(int vaobj, int bindingindex, int buffer, long offset, int stride) DSA version of BindVertexBuffer.
static void	glVertexArrayVertexAttribBindingEXT(int vaobj, int attribindex, int bindingindex) DSA version of VertexAttribBinding.
static void	glVertexArrayVertexAttribFormatEXT(int vaobj, int attribindex, int size, int type, boolean normalized, int relativeoffset) DSA version of VertexAttribFormat.
static void	glVertexArrayVertexAttribIFormatEXT(int vaobj, int attribindex, int size, int type, int relativeoffset) DSA version of VertexAttribIFormat.
static void	glVertexArrayVertexAttribLFormatEXT(int vaobj, int attribindex, int size, int type, int relativeoffset) DSA version of VertexAttribLFormat.
static void	glVertexArrayVertexBindingDivisorEXT(int vaobj, int bindingindex, int divisor) DSA version of VertexBindingDivisor.
static void	glVertexAttribBinding(int attribindex, int bindingindex) Associate a vertex attribute and a vertex buffer binding.
static void	glVertexAttribFormat(int attribindex, int size, int type, boolean normalized, int relativeoffset) Specifies the organization of data in vertex arrays.
static void	glVertexAttribIFormat(int attribindex, int size, int type, int relativeoffset) Specifies the organization of pure integer data in vertex arrays.
static void	glVertexAttribLFormat(int attribindex, int size, int type, int relativeoffset) Specifies the organization of 64-bit double data in vertex arrays.
static void	glVertexBindingDivisor(int bindingindex, int divisor) Modifies the rate at which generic vertex attributes advance during instanced rendering.

Methods inherited from class java.lang.Object

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

Field Detail

GL_VERTEX_ATTRIB_BINDING, GL_VERTEX_ATTRIB_RELATIVE_OFFSET

Accepted by the pname parameter of GetVertexAttrib*v.

GL_VERTEX_BINDING_DIVISOR, GL_VERTEX_BINDING_OFFSET, GL_VERTEX_BINDING_STRIDE, GL_VERTEX_BINDING_BUFFER

Accepted by the target parameter of GetBooleani_v, GetIntegeri_v, GetFloati_v, GetDoublei_v, and GetInteger64i_v.

GL_MAX_VERTEX_ATTRIB_RELATIVE_OFFSET, GL_MAX_VERTEX_ATTRIB_BINDINGS

Accepted by the pname parameter of GetIntegerv, ....

Method Detail

glBindVertexBuffer

public static void glBindVertexBuffer(int bindingindex,
                                      int buffer,
                                      long offset,
                                      int stride)

Binds a buffer to a vertex buffer bind point.

Parameters:

bindingindex - the index of the vertex buffer binding point to which to bind the buffer

buffer - the name of an existing buffer to bind to the vertex buffer binding point

offset - the offset of the first element of the buffer

stride - the distance between elements within the buffer

glVertexAttribFormat

public static void glVertexAttribFormat(int attribindex,
                                        int size,
                                        int type,
                                        boolean normalized,
                                        int relativeoffset)

Specifies the organization of data in vertex arrays.

Parameters:

attribindex - the generic vertex attribute array being described

size - the number of values per vertex that are stored in the array. One of:

1

2

3

4

BGRA

type - the type of the data stored in the array

normalized - if true then integer data is normalized to the range [-1, 1] or [0, 1] if it is signed or unsigned, respectively. If false then integer data is directly converted to floating point.

relativeoffset - the offset, measured in basic machine units of the first element relative to the start of the vertex buffer binding this attribute fetches from

glVertexAttribIFormat

public static void glVertexAttribIFormat(int attribindex,
                                         int size,
                                         int type,
                                         int relativeoffset)

Specifies the organization of pure integer data in vertex arrays.

Parameters:

attribindex - the generic vertex attribute array being described

size - the number of values per vertex that are stored in the array. One of:

1

2

3

4

BGRA

type - the type of the data stored in the array

relativeoffset - the offset, measured in basic machine units of the first element relative to the start of the vertex buffer binding this attribute fetches from

glVertexAttribLFormat

public static void glVertexAttribLFormat(int attribindex,
                                         int size,
                                         int type,
                                         int relativeoffset)

Specifies the organization of 64-bit double data in vertex arrays.

Parameters:

attribindex - the generic vertex attribute array being described

size - the number of values per vertex that are stored in the array. One of:

1

2

3

4

BGRA

type - the type of the data stored in the array

relativeoffset - the offset, measured in basic machine units of the first element relative to the start of the vertex buffer binding this attribute fetches from

glVertexAttribBinding

public static void glVertexAttribBinding(int attribindex,
                                         int bindingindex)

Associate a vertex attribute and a vertex buffer binding.

Parameters:

attribindex - the index of the attribute to associate with a vertex buffer binding

bindingindex - the index of the vertex buffer binding with which to associate the generic vertex attribute

glVertexBindingDivisor

public static void glVertexBindingDivisor(int bindingindex,
                                          int divisor)

Modifies the rate at which generic vertex attributes advance during instanced rendering.

Parameters:

bindingindex - the index of the generic vertex attribute

divisor - the number of instances that will pass between updates of the generic attribute at slot index

glVertexArrayBindVertexBufferEXT

public static void glVertexArrayBindVertexBufferEXT(int vaobj,
                                                    int bindingindex,
                                                    int buffer,
                                                    long offset,
                                                    int stride)

DSA version of BindVertexBuffer.

Parameters:

vaobj - the vertex array object

bindingindex - the index of the vertex buffer binding point to which to bind the buffer

buffer - the name of an existing buffer to bind to the vertex buffer binding point

offset - the offset of the first element of the buffer

stride - the distance between elements within the buffer

glVertexArrayVertexAttribFormatEXT

public static void glVertexArrayVertexAttribFormatEXT(int vaobj,
                                                      int attribindex,
                                                      int size,
                                                      int type,
                                                      boolean normalized,
                                                      int relativeoffset)

DSA version of VertexAttribFormat.

Parameters:

vaobj - the vertex array object

attribindex - the generic vertex attribute array being described

size - the number of values per vertex that are stored in the array. One of:

1

2

3

4

BGRA

type - the type of the data stored in the array

normalized - if true then integer data is normalized to the range [-1, 1] or [0, 1] if it is signed or unsigned, respectively. If false then integer data is directly converted to floating point.

relativeoffset - the offset, measured in basic machine units of the first element relative to the start of the vertex buffer binding this attribute fetches from

glVertexArrayVertexAttribIFormatEXT

public static void glVertexArrayVertexAttribIFormatEXT(int vaobj,
                                                       int attribindex,
                                                       int size,
                                                       int type,
                                                       int relativeoffset)

DSA version of VertexAttribIFormat.

Parameters:

vaobj - the vertex array object

attribindex - the generic vertex attribute array being described

size - the number of values per vertex that are stored in the array. One of:

1

2

3

4

BGRA

type - the type of the data stored in the array

relativeoffset - the offset, measured in basic machine units of the first element relative to the start of the vertex buffer binding this attribute fetches from

glVertexArrayVertexAttribLFormatEXT

public static void glVertexArrayVertexAttribLFormatEXT(int vaobj,
                                                       int attribindex,
                                                       int size,
                                                       int type,
                                                       int relativeoffset)

DSA version of VertexAttribLFormat.

Parameters:

vaobj - the vertex array object

attribindex - the generic vertex attribute array being described

size - the number of values per vertex that are stored in the array. One of:

1

2

3

4

BGRA

type - the type of the data stored in the array

relativeoffset - the offset, measured in basic machine units of the first element relative to the start of the vertex buffer binding this attribute fetches from

glVertexArrayVertexAttribBindingEXT

public static void glVertexArrayVertexAttribBindingEXT(int vaobj,
                                                       int attribindex,
                                                       int bindingindex)

DSA version of VertexAttribBinding.

Parameters:

vaobj - the vertex array object

attribindex - the index of the attribute to associate with a vertex buffer binding

bindingindex - the index of the vertex buffer binding with which to associate the generic vertex attribute

glVertexArrayVertexBindingDivisorEXT

public static void glVertexArrayVertexBindingDivisorEXT(int vaobj,
                                                        int bindingindex,
                                                        int divisor)

DSA version of VertexBindingDivisor.

Parameters:

vaobj - the vertex array object

bindingindex - the index of the generic vertex attribute

divisor - the number of instances that will pass between updates of the generic attribute at slot index