-/*
- * If edge flags are needed, setup an bitvector of flags and call
- * pipe->set_edgeflags().
- * XXX memleak: need to free the returned pointer at some point
- */
-static void *
-setup_edgeflags(GLcontext *ctx, GLenum primMode, GLint start, GLint count,
- const struct gl_client_array *array)
-{
- struct pipe_context *pipe = ctx->st->pipe;
-
- if ((primMode == GL_TRIANGLES ||
- primMode == GL_QUADS ||
- primMode == GL_POLYGON) &&
- (ctx->Polygon.FrontMode != GL_FILL ||
- ctx->Polygon.BackMode != GL_FILL)) {
- /* need edge flags */
- GLint i;
- unsigned *vec;
- struct st_buffer_object *stobj = st_buffer_object(array->BufferObj);
- ubyte *map;
-
- if (!stobj || stobj->Base.Name == 0) {
- /* edge flags are not in a VBO */
- return NULL;
- }
-
- vec = (unsigned *) _mesa_calloc(sizeof(unsigned) * ((count + 31) / 32));
- if (!vec)
- return NULL;
-
- map = pipe_buffer_map(pipe->screen, stobj->buffer, PIPE_BUFFER_USAGE_CPU_READ);
- map = ADD_POINTERS(map, array->Ptr);
-
- for (i = 0; i < count; i++) {
- if (*((float *) map))
- vec[i/32] |= 1 << (i % 32);
-
- map += array->StrideB;
- }