glDrawElementsBaseVertex man page on RedHat
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GLDRAWELEMENTSBASEVE(3G) OpenGL Manual GLDRAWELEMENTSBASEVE(3G)
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.
.SH "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.
SEE ALSO
glDrawElements(), glDrawRangeElements(),
glDrawRangeElementsBaseVertex(), glDrawElementsInstanced(),
glDrawElementsInstancedBaseVertex()
COPYRIGHT
Copyright © 2010 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/.
AUTHORS
opengl.org
opengl.org 03/16/2013 GLDRAWELEMENTSBASEVE(3G)
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