lp_state_rasterizer.c revision 5286dd701640976ffc328e8e85fb3830746851a1 
1/**************************************************************************
2 *
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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 TUNGSTEN GRAPHICS 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#include "pipe/p_defines.h"
29#include "util/u_memory.h"
30#include "lp_context.h"
31#include "lp_state.h"
32#include "lp_setup.h"
33#include "draw/draw_context.h"
34
35
36
37static void *
38llvmpipe_create_rasterizer_state(struct pipe_context *pipe,
39                                 const struct pipe_rasterizer_state *rast)
40{
41   /* We do nothing special with rasterizer state.
42    * The CSO handle is just a pointer to a pipe_rasterizer_state object.
43    */
44   return mem_dup(rast, sizeof(*rast));
45}
46
47
48
49static void
50llvmpipe_bind_rasterizer_state(struct pipe_context *pipe, void *handle)
51{
52   struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
53   const struct pipe_rasterizer_state *rasterizer =
54      (const struct pipe_rasterizer_state *) handle;
55
56   if (llvmpipe->rasterizer == rasterizer)
57      return;
58
59   /* pass-through to draw module */
60   draw_set_rasterizer_state(llvmpipe->draw, rasterizer, handle);
61
62   llvmpipe->rasterizer = rasterizer;
63
64   /* Note: we can immediately set the triangle state here and
65    * not worry about binning because we handle culling during
66    * triangle setup, not when rasterizing the bins.
67    */
68   if (llvmpipe->rasterizer) {
69      lp_setup_set_triangle_state( llvmpipe->setup,
70                   llvmpipe->rasterizer->cull_face,
71                   llvmpipe->rasterizer->front_ccw,
72                   llvmpipe->rasterizer->scissor,
73                   llvmpipe->rasterizer->gl_rasterization_rules);
74      lp_setup_set_flatshade_first( llvmpipe->setup,
75                   llvmpipe->rasterizer->flatshade_first);
76      lp_setup_set_line_state( llvmpipe->setup,
77                   llvmpipe->rasterizer->line_width);
78   }
79
80   llvmpipe->dirty |= LP_NEW_RASTERIZER;
81}
82
83
84static void
85llvmpipe_delete_rasterizer_state(struct pipe_context *pipe,
86                                 void *rasterizer)
87{
88   FREE( rasterizer );
89}
90
91
92
93void
94llvmpipe_init_rasterizer_funcs(struct llvmpipe_context *llvmpipe)
95{
96   llvmpipe->pipe.create_rasterizer_state = llvmpipe_create_rasterizer_state;
97   llvmpipe->pipe.bind_rasterizer_state   = llvmpipe_bind_rasterizer_state;
98   llvmpipe->pipe.delete_rasterizer_state = llvmpipe_delete_rasterizer_state;
99}
100