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 "lp_context.h"
29#include "lp_state.h"
30#include "lp_texture.h"
31
32#include "pipe/p_defines.h"
33#include "util/u_memory.h"
34#include "util/u_inlines.h"
35#include "draw/draw_context.h"
36#include "tgsi/tgsi_dump.h"
37#include "tgsi/tgsi_scan.h"
38#include "tgsi/tgsi_parse.h"
39
40
41static void *
42llvmpipe_create_gs_state(struct pipe_context *pipe,
43                         const struct pipe_shader_state *templ)
44{
45   struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
46   struct lp_geometry_shader *state;
47
48   state = CALLOC_STRUCT(lp_geometry_shader);
49   if (state == NULL )
50      goto fail;
51
52   /* debug */
53   if (0)
54      tgsi_dump(templ->tokens, 0);
55
56   /* copy shader tokens, the ones passed in will go away.
57    */
58   state->shader.tokens = tgsi_dup_tokens(templ->tokens);
59   if (state->shader.tokens == NULL)
60      goto fail;
61
62   state->draw_data = draw_create_geometry_shader(llvmpipe->draw, templ);
63   if (state->draw_data == NULL)
64      goto fail;
65
66   return state;
67
68fail:
69   if (state) {
70      FREE( (void *)state->shader.tokens );
71      FREE( state->draw_data );
72      FREE( state );
73   }
74   return NULL;
75}
76
77
78static void
79llvmpipe_bind_gs_state(struct pipe_context *pipe, void *gs)
80{
81   struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
82
83   llvmpipe->gs = (struct lp_geometry_shader *)gs;
84
85   draw_bind_geometry_shader(llvmpipe->draw,
86                             (llvmpipe->gs ? llvmpipe->gs->draw_data : NULL));
87
88   llvmpipe->dirty |= LP_NEW_GS;
89}
90
91
92static void
93llvmpipe_delete_gs_state(struct pipe_context *pipe, void *gs)
94{
95   struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
96
97   struct lp_geometry_shader *state =
98      (struct lp_geometry_shader *)gs;
99
100   draw_delete_geometry_shader(llvmpipe->draw,
101                               (state) ? state->draw_data : 0);
102   FREE(state);
103}
104
105
106void
107llvmpipe_init_gs_funcs(struct llvmpipe_context *llvmpipe)
108{
109   llvmpipe->pipe.create_gs_state = llvmpipe_create_gs_state;
110   llvmpipe->pipe.bind_gs_state   = llvmpipe_bind_gs_state;
111   llvmpipe->pipe.delete_gs_state = llvmpipe_delete_gs_state;
112}
113