glDrawElementsBaseVertex â render primitives from array data with a per-element offset
void glDrawElementsBaseVertex( | GLenum  | mode, |
|  | GLsizei  | count, |
|  | GLenum  | type, |
| Â | GLvoid *Â | indices, |
|  | GLint  | basevertex); |
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,
+ and GL_TRIANGLES 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.
+
+ 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.
+
glDrawElementsBaseVertex is only supported if the GL version is 3.2 or greater, or if
+ the ARB_draw_elements_base_vertex extension is supported.
+
+ 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.
+
+ glDrawElements, + glDrawRangeElements, + glDrawRangeElementsBaseVertex, + glDrawElementsInstanced, + glDrawElementsInstancedBaseVertex +
+ 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/. +