1/**********************************************************
2 * Copyright 2014 VMware, Inc.  All rights reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person
5 * obtaining a copy of this software and associated documentation
6 * files (the "Software"), to deal in the Software without
7 * restriction, including without limitation the rights to use, copy,
8 * modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 *
24 **********************************************************/
25
26#include "draw/draw_context.h"
27#include "util/u_inlines.h"
28#include "util/u_memory.h"
29#include "util/u_bitmask.h"
30#include "tgsi/tgsi_parse.h"
31#include "tgsi/tgsi_text.h"
32
33#include "svga_context.h"
34#include "svga_cmd.h"
35#include "svga_debug.h"
36#include "svga_shader.h"
37#include "svga_streamout.h"
38
39static void *
40svga_create_gs_state(struct pipe_context *pipe,
41                     const struct pipe_shader_state *templ)
42{
43   struct svga_context *svga = svga_context(pipe);
44   struct svga_geometry_shader *gs = CALLOC_STRUCT(svga_geometry_shader);
45
46   if (!gs)
47      return NULL;
48
49   SVGA_STATS_TIME_PUSH(svga_sws(svga), SVGA_STATS_TIME_CREATEGS);
50
51   gs->base.tokens = tgsi_dup_tokens(templ->tokens);
52
53   /* Collect basic info that we'll need later:
54    */
55   tgsi_scan_shader(gs->base.tokens, &gs->base.info);
56
57   gs->draw_shader = draw_create_geometry_shader(svga->swtnl.draw, templ);
58
59   gs->base.id = svga->debug.shader_id++;
60
61   gs->generic_outputs = svga_get_generic_outputs_mask(&gs->base.info);
62
63   /* check for any stream output declarations */
64   if (templ->stream_output.num_outputs) {
65      gs->base.stream_output = svga_create_stream_output(svga, &gs->base,
66                                                         &templ->stream_output);
67   }
68
69   SVGA_STATS_TIME_POP(svga_sws(svga));
70   return gs;
71}
72
73
74static void
75svga_bind_gs_state(struct pipe_context *pipe, void *shader)
76{
77   struct svga_geometry_shader *gs = (struct svga_geometry_shader *)shader;
78   struct svga_context *svga = svga_context(pipe);
79
80   svga->curr.user_gs = gs;
81   svga->dirty |= SVGA_NEW_GS;
82}
83
84
85static void
86svga_delete_gs_state(struct pipe_context *pipe, void *shader)
87{
88   struct svga_context *svga = svga_context(pipe);
89   struct svga_geometry_shader *gs = (struct svga_geometry_shader *)shader;
90   struct svga_geometry_shader *next_gs;
91   struct svga_shader_variant *variant, *tmp;
92
93   svga_hwtnl_flush_retry(svga);
94
95   /* Start deletion from the original geometry shader state */
96   if (gs->base.parent != NULL)
97      gs = (struct svga_geometry_shader *)gs->base.parent;
98
99   /* Free the list of geometry shaders */
100   while (gs) {
101      next_gs = (struct svga_geometry_shader *)gs->base.next;
102
103      if (gs->base.stream_output != NULL)
104         svga_delete_stream_output(svga, gs->base.stream_output);
105
106      draw_delete_geometry_shader(svga->swtnl.draw, gs->draw_shader);
107
108      for (variant = gs->base.variants; variant; variant = tmp) {
109         tmp = variant->next;
110
111         /* Check if deleting currently bound shader */
112         if (variant == svga->state.hw_draw.gs) {
113            SVGA_RETRY(svga, svga_set_shader(svga, SVGA3D_SHADERTYPE_GS, NULL));
114            svga->state.hw_draw.gs = NULL;
115         }
116
117         svga_destroy_shader_variant(svga, variant);
118      }
119
120      FREE((void *)gs->base.tokens);
121      FREE(gs);
122      gs = next_gs;
123   }
124}
125
126
127void
128svga_init_gs_functions(struct svga_context *svga)
129{
130   svga->pipe.create_gs_state = svga_create_gs_state;
131   svga->pipe.bind_gs_state = svga_bind_gs_state;
132   svga->pipe.delete_gs_state = svga_delete_gs_state;
133}
134