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#include "lp_context.h"
29#include "lp_state.h"
30#include "lp_texture.h"
31#include "lp_debug.h"
32
33#include "pipe/p_defines.h"
34#include "util/u_memory.h"
35#include "util/u_inlines.h"
36#include "draw/draw_context.h"
37#include "tgsi/tgsi_dump.h"
38#include "tgsi/tgsi_scan.h"
39#include "tgsi/tgsi_parse.h"
40
41
42static void *
43llvmpipe_create_gs_state(struct pipe_context *pipe,
44                         const struct pipe_shader_state *templ)
45{
46   struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
47   struct lp_geometry_shader *state;
48
49   state = CALLOC_STRUCT(lp_geometry_shader);
50   if (!state)
51      goto no_state;
52
53   /* debug */
54   if (LP_DEBUG & DEBUG_TGSI && templ->type == PIPE_SHADER_IR_TGSI) {
55      debug_printf("llvmpipe: Create geometry shader %p:\n", (void *)state);
56      tgsi_dump(templ->tokens, 0);
57   }
58
59   /* copy stream output info */
60   if (templ->type == PIPE_SHADER_IR_TGSI)
61      state->no_tokens = !templ->tokens;
62   else
63      state->no_tokens = FALSE;
64   memcpy(&state->stream_output, &templ->stream_output, sizeof state->stream_output);
65
66   if (templ->tokens || templ->type == PIPE_SHADER_IR_NIR) {
67      state->dgs = draw_create_geometry_shader(llvmpipe->draw, templ);
68      if (state->dgs == NULL) {
69         goto no_dgs;
70      }
71   }
72
73   return state;
74
75no_dgs:
76   FREE( state );
77no_state:
78   return NULL;
79}
80
81
82static void
83llvmpipe_bind_gs_state(struct pipe_context *pipe, void *gs)
84{
85   struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
86
87   llvmpipe->gs = (struct lp_geometry_shader *)gs;
88
89   draw_bind_geometry_shader(llvmpipe->draw,
90                             (llvmpipe->gs ? llvmpipe->gs->dgs : NULL));
91
92   llvmpipe->dirty |= LP_NEW_GS;
93}
94
95
96static void
97llvmpipe_delete_gs_state(struct pipe_context *pipe, void *gs)
98{
99   struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
100
101   struct lp_geometry_shader *state =
102      (struct lp_geometry_shader *)gs;
103
104   if (!state) {
105      return;
106   }
107
108   draw_delete_geometry_shader(llvmpipe->draw, state->dgs);
109   FREE(state);
110}
111
112
113void
114llvmpipe_init_gs_funcs(struct llvmpipe_context *llvmpipe)
115{
116   llvmpipe->pipe.create_gs_state = llvmpipe_create_gs_state;
117   llvmpipe->pipe.bind_gs_state   = llvmpipe_bind_gs_state;
118   llvmpipe->pipe.delete_gs_state = llvmpipe_delete_gs_state;
119}
120