Ubuntu Manpage: glGetVertexAttribdv, glGetVertexAttribfv, glGetVertexAttribiv, glGetVertexAttribIiv,

Provided by: opengl-4-man-doc_1.0~svn33624-1_all

NAME

       glGetVertexAttribdv, glGetVertexAttribfv, glGetVertexAttribiv, glGetVertexAttribIiv,
       glGetVertexAttribIuiv, glGetVertexAttribLdv - Return a generic vertex attribute parameter

C SPECIFICATION

       void glGetVertexAttribdv(GLuint index, GLenum pname, GLdouble *params);

       void glGetVertexAttribfv(GLuint index, GLenum pname, GLfloat *params);

       void glGetVertexAttribiv(GLuint index, GLenum pname, GLint *params);

       void glGetVertexAttribIiv(GLuint index, GLenum pname, GLint *params);

       void glGetVertexAttribIuiv(GLuint index, GLenum pname, GLuint *params);

       void glGetVertexAttribLdv(GLuint index, GLenum pname, GLdouble *params);

PARAMETERS

       index
           Specifies the generic vertex attribute parameter to be queried.

       pname
           Specifies the symbolic name of the vertex attribute parameter to be queried. Accepted values are
           GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING, GL_VERTEX_ATTRIB_ARRAY_ENABLED, GL_VERTEX_ATTRIB_ARRAY_SIZE,
           GL_VERTEX_ATTRIB_ARRAY_STRIDE, GL_VERTEX_ATTRIB_ARRAY_TYPE, GL_VERTEX_ATTRIB_ARRAY_NORMALIZED,
           GL_VERTEX_ATTRIB_ARRAY_INTEGER, GL_VERTEX_ATTRIB_ARRAY_DIVISOR, or GL_CURRENT_VERTEX_ATTRIB.

       params
           Returns the requested data.

DESCRIPTION

glGetVertexAttrib returns in params the value of a generic vertex attribute parameter. The generic vertex
attribute to be queried is specified by index, and the parameter to be queried is specified by pname.

The accepted parameter names are as follows:

GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING

params returns a single value, the name of the buffer object currently bound to the binding point
corresponding to generic vertex attribute array index. If no buffer object is bound, 0 is returned.
The initial value is 0.

GL_VERTEX_ATTRIB_ARRAY_ENABLED

params returns a single value that is non-zero (true) if the vertex attribute array for index is
enabled and 0 (false) if it is disabled. The initial value is GL_FALSE.

GL_VERTEX_ATTRIB_ARRAY_SIZE

params returns a single value, the size of the vertex attribute array for index. The size is the
number of values for each element of the vertex attribute array, and it will be 1, 2, 3, or 4. The
initial value is 4.

GL_VERTEX_ATTRIB_ARRAY_STRIDE

params returns a single value, the array stride for (number of bytes between successive elements in)
the vertex attribute array for index. A value of 0 indicates that the array elements are stored
sequentially in memory. The initial value is 0.

GL_VERTEX_ATTRIB_ARRAY_TYPE

params returns a single value, a symbolic constant indicating the array type for the vertex attribute
array for index. Possible values are GL_BYTE, GL_UNSIGNED_BYTE, GL_SHORT, GL_UNSIGNED_SHORT, GL_INT,
GL_UNSIGNED_INT, GL_FLOAT, and GL_DOUBLE. The initial value is GL_FLOAT.

GL_VERTEX_ATTRIB_ARRAY_NORMALIZED

params returns a single value that is non-zero (true) if fixed-point data types for the vertex
attribute array indicated by index are normalized when they are converted to floating point, and 0
(false) otherwise. The initial value is GL_FALSE.

GL_VERTEX_ATTRIB_ARRAY_INTEGER

params returns a single value that is non-zero (true) if fixed-point data types for the vertex
attribute array indicated by index have integer data types, and 0 (false) otherwise. The initial
value is 0 (GL_FALSE).

GL_VERTEX_ATTRIB_ARRAY_DIVISOR

params returns a single value that is the frequency divisor used for instanced rendering. See
glVertexAttribDivisor(). The initial value is 0.

GL_CURRENT_VERTEX_ATTRIB

params returns four values that represent the current value for the generic vertex attribute
specified by index. Generic vertex attribute 0 is unique in that it has no current state, so an error
will be generated if index is 0. The initial value for all other generic vertex attributes is
(0,0,0,1).

glGetVertexAttribdv and glGetVertexAttribfv return the current attribute values as four
single-precision floating-point values; glGetVertexAttribiv reads them as floating-point values and
converts them to four integer values; glGetVertexAttribIiv and glGetVertexAttribIuiv read and return
them as signed or unsigned integer values, respectively; glGetVertexAttribLdv reads and returns them
as four double-precision floating-point values.

All of the parameters except GL_CURRENT_VERTEX_ATTRIB represent state stored in the currently bound
vertex array object.

NOTES

       If an error is generated, no change is made to the contents of params.

ERRORS

       GL_INVALID_OPERATION is generated if pname is not GL_CURRENT_VERTEX_ATTRIB and there is no currently
       bound vertex array object.

       GL_INVALID_VALUE is generated if index is greater than or equal to GL_MAX_VERTEX_ATTRIBS.

       GL_INVALID_ENUM is generated if pname is not an accepted value.

       GL_INVALID_OPERATION is generated if index is 0 and pname is GL_CURRENT_VERTEX_ATTRIB.

ASSOCIATED GETS

       glGet() with argument GL_MAX_VERTEX_ATTRIBS

       glGetVertexAttribPointerv() with arguments index and GL_VERTEX_ATTRIB_ARRAY_POINTER

VERSION SUPPORT

       ┌──────────────────────┬───────────────────────────────────────────────────────────────────────┐
       │                      │                OpenGL Version                                         │
       ├──────────────────────┼─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┤
       │Function              │ 2.0 │ 2.1 │ 3.0 │ 3.1 │ 3.2 │ 3.3 │ 4.0 │ 4.1 │ 4.2 │ 4.3 │ 4.4 │ 4.5 │
       │/                     │     │     │     │     │     │     │     │     │     │     │     │     │
       │Feature               │     │     │     │     │     │     │     │     │     │     │     │     │
       │Name                  │     │     │     │     │     │     │     │     │     │     │     │     │
       ├──────────────────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┤
       │glGetVertexAttribIiv  │  -  │  -  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │
       ├──────────────────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┤
       │glGetVertexAttribIuiv │  -  │  -  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │
       ├──────────────────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┤
       │glGetVertexAttribLdv  │  -  │  -  │  -  │  -  │  -  │  -  │  -  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │
       ├──────────────────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┤
       │glGetVertexAttribdv   │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │
       ├──────────────────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┤
       │glGetVertexAttribfv   │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │
       ├──────────────────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┤
       │glGetVertexAttribiv   │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │
       └──────────────────────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┘

COPYRIGHT

       Copyright © 2003-2005 3Dlabs Inc. Ltd. Copyright © 2010-2014 Khronos Group. This material may be
       distributed subject to the terms and conditions set forth in the Open Publication License, v 1.0, 8 June
       1999.  http://opencontent.org/openpub/.

COPYRIGHT

       Copyright © 2003-2005 3Dlabs Inc. Ltd.
       Copyright © 2010-2014 Khronos Group

[FIXME: source]                                    01/03/2018                              GLGETVERTEXATTRIB(3G)

NAME

C SPECIFICATION

PARAMETERS

DESCRIPTION

NOTES

ERRORS

ASSOCIATED GETS

VERSION SUPPORT

SEE ALSO

COPYRIGHT

COPYRIGHT