plucky (3) glDrawElementsBaseVertex.3G.gz

Provided by: opengl-4-man-doc_1.0~svn33624-3_all bug

NAME
       glDrawElementsBaseVertex - render primitives from array data with a per-element offset


C SPECIFICATION
       void glDrawElementsBaseVertex(GLenum mode, GLsizei count, GLenum type, GLvoid *indices,
                                     GLint basevertex);


PARAMETERS
       mode
           Specifies what kind of primitives to render. Symbolic constants GL_POINTS, GL_LINE_STRIP,
           GL_LINE_LOOP, GL_LINES, GL_TRIANGLE_STRIP, GL_TRIANGLE_FAN, GL_TRIANGLES, GL_LINES_ADJACENCY,
           GL_LINE_STRIP_ADJACENCY, GL_TRIANGLES_ADJACENCY, GL_TRIANGLE_STRIP_ADJACENCY and GL_PATCHES are
           accepted.

       count
           Specifies the number of elements to be rendered.

       type
           Specifies the type of the values in indices. Must be one of GL_UNSIGNED_BYTE, GL_UNSIGNED_SHORT, or
           GL_UNSIGNED_INT.

       indices
           Specifies a pointer to the location where the indices are stored.

       basevertex
           Specifies a constant that should be added to each element of indices when chosing elements from the
           enabled vertex arrays.


DESCRIPTION
       glDrawElementsBaseVertex behaves identically to glDrawElements() except that the ith element transferred
       by the corresponding draw call will be taken from element indices[i] + basevertex of each enabled array.
       If the resulting value is larger than the maximum value representable by type, it is as if the
       calculation were upconverted to 32-bit unsigned integers (with wrapping on overflow conditions). The
       operation is undefined if the sum would be negative.


NOTES
       glDrawElementsBaseVertex is only supported if the GL version is 3.2 or greater, or if the
       ARB_draw_elements_base_vertex extension is supported.


ERRORS
       GL_INVALID_ENUM is generated if mode is not an accepted value.

       GL_INVALID_VALUE is generated if count is negative.

       GL_INVALID_OPERATION is generated if a geometry shader is active and mode is incompatible with the input
       primitive type of the geometry shader in the currently installed program object.

       GL_INVALID_OPERATION is generated if a non-zero buffer object name is bound to an enabled array or the
       element array and the buffer object's data store is currently mapped.


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                     │     │     │     │     │     │     │     │     │     │     │     │     │
       ├─────────────────────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┤
       │glDrawElementsBaseVertex │  -  │  -  │  -  │  -  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │
       └─────────────────────────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┘


SEE ALSO
       glDrawElements(), glDrawRangeElements(), glDrawRangeElementsBaseVertex(), glDrawElementsInstanced(),
       glDrawElementsInstancedBaseVertex()


       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 © 2010-2014 Khronos Group

[FIXME: source]                                    11/18/2024                           GLDRAWELEMENTSBASEVE(3G)