GLAPI/glMultiDrawElementsBaseVertex
| Core in version | 4.6 | |
|---|---|---|
| Core since version | 3.2 | |
| Core ARB extension | ARB_draw_elements_base_vertex | |
glMultiDrawElementsBaseVertex: render multiple sets of primitives by specifying indices of array data elements and an index to apply to each index
Function Definition
void glMultiDrawElementsBaseVertex(GLenum mode, const GLsizei *count, GLenum type, const GLvoid * const *indices, GLsizei drawcount, const GLint *basevertex);
- mode
- Specifies what kind of primitives to render. Symbolic constants GL_POINTS, GL_LINE_STRIP, GL_LINE_LOOP, GL_LINES, GL_LINE_STRIP_ADJACENCY, GL_LINES_ADJACENCY, GL_TRIANGLE_STRIP, GL_TRIANGLE_FAN, GL_TRIANGLES, GL_TRIANGLE_STRIP_ADJACENCY, GL_TRIANGLES_ADJACENCY and GL_PATCHES are accepted.
- count
- Points to an array of the elements counts.
- type
- Specifies the type of the values in indices. Must be one of GL_UNSIGNED_BYTE, GL_UNSIGNED_SHORT, or GL_UNSIGNED_INT.
- indices
- Points to an array of drawcount values, where each value is a byte offset (cast to a pointer type) into the buffer bound to GL_ELEMENT_ARRAY_BUFFER to start reading indices from.
- drawcount
- Specifies the size of the count, indices and basevertex arrays.
- basevertex
- Points to an array of base vertex values.
Description
glMultiDrawElementsBaseVertex behaves identically to glDrawElementsBaseVertex, except that drawcount separate lists of elements are specified instead.
It has the same effect as:
for (int i = 0; i < drawcount; i++) {
glDrawElementsBaseVertex(mode,
count[i],
type,
(GLvoid *)indices[i],
basevertex[i]);
}
Notes
glMultiDrawElementsBaseVertex is available only if the GL version is 3.1 or greater.
GL_LINE_STRIP_ADJACENCY, GL_LINES_ADJACENCY, GL_TRIANGLE_STRIP_ADJACENCY and GL_TRIANGLES_ADJACENCY are available only if the GL version is 3.2 or greater.
Errors
GL_INVALID_ENUM is generated if mode is not an accepted value.
GL_INVALID_VALUE is generated if drawcount is negative.
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
glBindVertexArray, glDrawElements, glDrawElementsBaseVertex, glDrawElementsIndirect, glDrawElementsInstanced, glDrawElementsInstancedBaseInstance, glDrawElementsInstancedBaseVertex, glDrawElementsInstancedBaseVertexBaseInstance, glDrawRangeElements, glDrawRangeElementsBaseVertex, glMultiDrawArrays, glMultiDrawElements, glMultiDrawElementsIndirect
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/.