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      1 /**************************************************************************
      2  *
      3  * Copyright 2007 VMware, Inc.
      4  * All Rights Reserved.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the
      8  * "Software"), to deal in the Software without restriction, including
      9  * without limitation the rights to use, copy, modify, merge, publish,
     10  * distribute, sub license, and/or sell copies of the Software, and to
     11  * permit persons to whom the Software is furnished to do so, subject to
     12  * the following conditions:
     13  *
     14  * The above copyright notice and this permission notice (including the
     15  * next paragraph) shall be included in all copies or substantial portions
     16  * of the Software.
     17  *
     18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
     19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
     21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
     22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
     23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
     24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     25  *
     26  **************************************************************************/
     27 
     28 /* Authors:  Keith Whitwell <keithw (at) vmware.com>
     29  */
     30 #include "sp_context.h"
     31 #include "sp_state.h"
     32 #include "draw/draw_context.h"
     33 
     34 
     35 static void
     36 softpipe_set_clip_state(struct pipe_context *pipe,
     37                         const struct pipe_clip_state *clip)
     38 {
     39    struct softpipe_context *softpipe = softpipe_context(pipe);
     40 
     41    /* pass the clip state to the draw module */
     42    draw_set_clip_state(softpipe->draw, clip);
     43 }
     44 
     45 
     46 static void
     47 softpipe_set_viewport_states(struct pipe_context *pipe,
     48                              unsigned start_slot,
     49                              unsigned num_viewports,
     50                              const struct pipe_viewport_state *viewports)
     51 {
     52    struct softpipe_context *softpipe = softpipe_context(pipe);
     53 
     54    /* pass the viewport info to the draw module */
     55    draw_set_viewport_states(softpipe->draw, start_slot, num_viewports,
     56                             viewports);
     57 
     58    memcpy(softpipe->viewports + start_slot, viewports,
     59           sizeof(struct pipe_viewport_state) * num_viewports);
     60    softpipe->dirty |= SP_NEW_VIEWPORT;
     61 }
     62 
     63 
     64 static void
     65 softpipe_set_scissor_states(struct pipe_context *pipe,
     66                             unsigned start_slot,
     67                             unsigned num_scissors,
     68                             const struct pipe_scissor_state *scissors)
     69 {
     70    struct softpipe_context *softpipe = softpipe_context(pipe);
     71 
     72    draw_flush(softpipe->draw);
     73 
     74    debug_assert(start_slot < PIPE_MAX_VIEWPORTS);
     75    debug_assert((start_slot + num_scissors) <= PIPE_MAX_VIEWPORTS);
     76 
     77    memcpy(softpipe->scissors + start_slot, scissors,
     78           sizeof(struct pipe_scissor_state) * num_scissors);
     79    softpipe->dirty |= SP_NEW_SCISSOR;
     80 }
     81 
     82 
     83 static void
     84 softpipe_set_polygon_stipple(struct pipe_context *pipe,
     85                              const struct pipe_poly_stipple *stipple)
     86 {
     87    struct softpipe_context *softpipe = softpipe_context(pipe);
     88 
     89    draw_flush(softpipe->draw);
     90 
     91    softpipe->poly_stipple = *stipple; /* struct copy */
     92    softpipe->dirty |= SP_NEW_STIPPLE;
     93 }
     94 
     95 
     96 void
     97 softpipe_init_clip_funcs(struct pipe_context *pipe)
     98 {
     99    pipe->set_clip_state = softpipe_set_clip_state;
    100    pipe->set_viewport_states = softpipe_set_viewport_states;
    101    pipe->set_scissor_states = softpipe_set_scissor_states;
    102    pipe->set_polygon_stipple = softpipe_set_polygon_stipple;
    103 }
    104