Страницы справочника OS X

Эта страница руководства является частью версии 5.0 Инструментов XCode

Читать страницы руководства

GLMULTIDRAWELEMENTSB(3G)                         OpenGL 3.3                         GLMULTIDRAWELEMENTSB(3G)



NAME
       glMultiDrawElementsBaseVertex - render multiple sets of primitives by specifying indices of array
       data elements and an index to apply to each index

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

PARAMETERS
       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 and GL_TRIANGLES_ADJACENCY 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
           Specifies a pointer to the location where the indices are stored.

       primcount
           Specifies the size of the count array.

       basevertex
           Specifies a pointer to the location where the base vertices are stored.

DESCRIPTION
       glMultiDrawElementsBaseVertex behaves identically to glDrawElementsBaseVertex(), except that
       primcount separate lists of elements are specifried instead.

       It has the same effect as:

               for (int i = 0; i < primcount; i++)
                   if (count[i] > 0)
                       glDrawElementsBaseVertex(mode,
                                                count[i],
                                                type,
                                                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 primcount 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
       glMultiDrawElements(), glDrawElementsBaseVertex(), glDrawArrays(), glVertexAttribPointer()


COPYRIGHT
       Copyright (C) 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/.



OpenGL 3.3                                       03/08/2011                         GLMULTIDRAWELEMENTSB(3G)