1/**************************************************************************
2 *
3 * Copyright 2010 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 "util/u_math.h"
29#include "util/u_memory.h"
30#include "pipe/p_shader_tokens.h"
31#include "pipe/p_screen.h"
32
33#include "draw_private.h"
34#include "draw_context.h"
35#include "draw_vs.h"
36#include "draw_llvm.h"
37
38#include "tgsi/tgsi_parse.h"
39#include "tgsi/tgsi_scan.h"
40#include "nir/nir_to_tgsi_info.h"
41#include "nir.h"
42
43static void
44vs_llvm_prepare(struct draw_vertex_shader *shader,
45                struct draw_context *draw)
46{
47   /*struct llvm_vertex_shader *evs = llvm_vertex_shader(shader);*/
48}
49
50static void
51vs_llvm_run_linear( struct draw_vertex_shader *shader,
52		    const float (*input)[4],
53		    float (*output)[4],
54                    const void *constants[PIPE_MAX_CONSTANT_BUFFERS],
55                    const unsigned constants_size[PIPE_MAX_CONSTANT_BUFFERS],
56		    unsigned count,
57		    unsigned input_stride,
58		    unsigned output_stride,
59		    const unsigned *elts)
60{
61   /* we should never get here since the entire pipeline is
62    * generated in draw_pt_fetch_shade_pipeline_llvm.c */
63   debug_assert(0);
64}
65
66
67static void
68vs_llvm_delete( struct draw_vertex_shader *dvs )
69{
70   struct llvm_vertex_shader *shader = llvm_vertex_shader(dvs);
71   struct draw_llvm_variant_list_item *li;
72
73   li = first_elem(&shader->variants);
74   while(!at_end(&shader->variants, li)) {
75      struct draw_llvm_variant_list_item *next = next_elem(li);
76      draw_llvm_destroy_variant(li->base);
77      li = next;
78   }
79
80   assert(shader->variants_cached == 0);
81   if (dvs->state.ir.nir)
82      ralloc_free(dvs->state.ir.nir);
83   FREE((void*) dvs->state.tokens);
84   FREE( dvs );
85}
86
87
88struct draw_vertex_shader *
89draw_create_vs_llvm(struct draw_context *draw,
90		    const struct pipe_shader_state *state)
91{
92   struct llvm_vertex_shader *vs = CALLOC_STRUCT( llvm_vertex_shader );
93
94   if (!vs)
95      return NULL;
96
97   /* due to some bugs in the feedback state tracker we have to check
98      for ir.nir & PIPE_SHADER_IR_NIR here. */
99   if (state->ir.nir && state->type == PIPE_SHADER_IR_NIR) {
100      vs->base.state.ir.nir = state->ir.nir;
101      nir_shader *nir = (nir_shader *)state->ir.nir;
102      if (!nir->options->lower_uniforms_to_ubo)
103         NIR_PASS_V(state->ir.nir, nir_lower_uniforms_to_ubo, false, false);
104      nir_tgsi_scan_shader(state->ir.nir, &vs->base.info, true);
105   } else {
106      /* we make a private copy of the tokens */
107      vs->base.state.tokens = tgsi_dup_tokens(state->tokens);
108      if (!vs->base.state.tokens) {
109         FREE(vs);
110         return NULL;
111      }
112
113      tgsi_scan_shader(state->tokens, &vs->base.info);
114   }
115
116   vs->variant_key_size =
117      draw_llvm_variant_key_size(
118         vs->base.info.file_max[TGSI_FILE_INPUT]+1,
119         MAX2(vs->base.info.file_max[TGSI_FILE_SAMPLER]+1,
120              vs->base.info.file_max[TGSI_FILE_SAMPLER_VIEW]+1),
121         vs->base.info.file_max[TGSI_FILE_IMAGE]+1);
122
123   vs->base.state.type = state->type;
124   vs->base.state.stream_output = state->stream_output;
125   vs->base.draw = draw;
126   vs->base.prepare = vs_llvm_prepare;
127   vs->base.run_linear = vs_llvm_run_linear;
128   vs->base.delete = vs_llvm_delete;
129   vs->base.create_variant = draw_vs_create_variant_generic;
130
131   make_empty_list(&vs->variants);
132
133   return &vs->base;
134}
135