diff options
| -rw-r--r-- | src/mesa/vbo/vbo_exec_array.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/src/mesa/vbo/vbo_exec_array.c b/src/mesa/vbo/vbo_exec_array.c index 484e1a85e41..18719d5f537 100644 --- a/src/mesa/vbo/vbo_exec_array.c +++ b/src/mesa/vbo/vbo_exec_array.c @@ -95,10 +95,25 @@ vbo_get_minmax_index(struct gl_context *ctx, GLuint i; if (_mesa_is_bufferobj(ib->obj)) { - const GLvoid *map = - ctx->Driver.MapBufferRange(ctx, 0, ib->obj->Size, GL_MAP_READ_BIT, - ib->obj); - indices = ADD_POINTERS(map, ib->ptr); + unsigned map_size; + + switch (ib->type) { + case GL_UNSIGNED_INT: + map_size = count * sizeof(GLuint); + break; + case GL_UNSIGNED_SHORT: + map_size = count * sizeof(GLushort); + break; + case GL_UNSIGNED_BYTE: + map_size = count * sizeof(GLubyte); + break; + default: + assert(0); + map_size = 0; + } + + indices = ctx->Driver.MapBufferRange(ctx, (GLsizeiptr) ib->ptr, map_size, + GL_MAP_READ_BIT, ib->obj); } else { indices = ib->ptr; } |