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