1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
|
/**************************************************************************
*
* Copyright 2007 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/*
* Authors:
* Keith Whitwell <keithw@vmware.com>
* Brian Paul
*/
#include "util/u_math.h"
#include "util/u_memory.h"
#include "util/ralloc.h"
#include "pipe/p_shader_tokens.h"
#include "pipe/p_context.h"
#include "nir/nir_to_tgsi.h"
#include "draw_private.h"
#include "draw_context.h"
#include "draw_vs.h"
#include "tgsi/tgsi_parse.h"
#include "tgsi/tgsi_scan.h"
#include "tgsi/tgsi_exec.h"
struct exec_vertex_shader {
struct draw_vertex_shader base;
struct tgsi_exec_machine *machine;
};
static struct exec_vertex_shader *
exec_vertex_shader(struct draw_vertex_shader *vs)
{
return (struct exec_vertex_shader *)vs;
}
/* Not required for run_linear.
*/
static void
vs_exec_prepare(struct draw_vertex_shader *shader,
struct draw_context *draw)
{
struct exec_vertex_shader *evs = exec_vertex_shader(shader);
debug_assert(!draw->llvm);
/* Specify the vertex program to interpret/execute.
* Avoid rebinding when possible.
*/
if (evs->machine->Tokens != shader->state.tokens) {
tgsi_exec_machine_bind_shader(evs->machine,
shader->state.tokens,
draw->vs.tgsi.sampler,
draw->vs.tgsi.image,
draw->vs.tgsi.buffer);
}
}
/**
* Simplified vertex shader interface for the pt paths. Given the
* complexity of code-generating all the above operations together,
* it's time to try doing all the other stuff separately.
*/
static void
vs_exec_run_linear(struct draw_vertex_shader *shader,
const float (*input)[4],
float (*output)[4],
const void *constants[PIPE_MAX_CONSTANT_BUFFERS],
const unsigned const_size[PIPE_MAX_CONSTANT_BUFFERS],
unsigned count,
unsigned input_stride,
unsigned output_stride,
const unsigned *fetch_elts)
{
struct exec_vertex_shader *evs = exec_vertex_shader(shader);
struct tgsi_exec_machine *machine = evs->machine;
unsigned int i, j;
unsigned slot;
boolean clamp_vertex_color = shader->draw->rasterizer->clamp_vertex_color;
debug_assert(!shader->draw->llvm);
tgsi_exec_set_constant_buffers(machine, PIPE_MAX_CONSTANT_BUFFERS,
constants, const_size);
if (shader->info.uses_instanceid) {
unsigned i = machine->SysSemanticToIndex[TGSI_SEMANTIC_INSTANCEID];
assert(i < ARRAY_SIZE(machine->SystemValue));
for (j = 0; j < TGSI_QUAD_SIZE; j++)
machine->SystemValue[i].xyzw[0].i[j] = shader->draw->instance_id;
}
for (i = 0; i < count; i += MAX_TGSI_VERTICES) {
unsigned int max_vertices = MIN2(MAX_TGSI_VERTICES, count - i);
/* Swizzle inputs.
*/
for (j = 0; j < max_vertices; j++) {
#if 0
debug_printf("%d) Input vert:\n", i + j);
for (slot = 0; slot < shader->info.num_inputs; slot++) {
debug_printf("\t%d: %f %f %f %f\n", slot,
input[slot][0],
input[slot][1],
input[slot][2],
input[slot][3]);
}
#endif
int basevertex = shader->draw->pt.user.eltSize ? shader->draw->pt.user.eltBias : shader->draw->start_index;
if (shader->info.uses_vertexid) {
unsigned vid = machine->SysSemanticToIndex[TGSI_SEMANTIC_VERTEXID];
assert(vid < ARRAY_SIZE(machine->SystemValue));
machine->SystemValue[vid].xyzw[0].i[j] = fetch_elts ? fetch_elts[i + j] : (i + j + basevertex);
}
if (shader->info.uses_basevertex) {
unsigned vid = machine->SysSemanticToIndex[TGSI_SEMANTIC_BASEVERTEX];
assert(vid < ARRAY_SIZE(machine->SystemValue));
machine->SystemValue[vid].xyzw[0].i[j] = basevertex;
}
if (shader->info.uses_vertexid_nobase) {
unsigned vid = machine->SysSemanticToIndex[TGSI_SEMANTIC_VERTEXID_NOBASE];
assert(vid < ARRAY_SIZE(machine->SystemValue));
machine->SystemValue[vid].xyzw[0].i[j] = fetch_elts ? (fetch_elts[i + j] - basevertex) : (i + j);
}
for (slot = 0; slot < shader->info.num_inputs; slot++) {
#if 0
assert(!util_is_inf_or_nan(input[slot][0]));
assert(!util_is_inf_or_nan(input[slot][1]));
assert(!util_is_inf_or_nan(input[slot][2]));
assert(!util_is_inf_or_nan(input[slot][3]));
#endif
machine->Inputs[slot].xyzw[0].f[j] = input[slot][0];
machine->Inputs[slot].xyzw[1].f[j] = input[slot][1];
machine->Inputs[slot].xyzw[2].f[j] = input[slot][2];
machine->Inputs[slot].xyzw[3].f[j] = input[slot][3];
}
input = (const float (*)[4])((const char *)input + input_stride);
}
machine->NonHelperMask = (1 << max_vertices) - 1;
/* run interpreter */
tgsi_exec_machine_run(machine, 0);
/* Unswizzle all output results.
*/
for (j = 0; j < max_vertices; j++) {
for (slot = 0; slot < shader->info.num_outputs; slot++) {
enum tgsi_semantic name = shader->info.output_semantic_name[slot];
if (clamp_vertex_color &&
(name == TGSI_SEMANTIC_COLOR || name == TGSI_SEMANTIC_BCOLOR)) {
output[slot][0] = SATURATE(machine->Outputs[slot].xyzw[0].f[j]);
output[slot][1] = SATURATE(machine->Outputs[slot].xyzw[1].f[j]);
output[slot][2] = SATURATE(machine->Outputs[slot].xyzw[2].f[j]);
output[slot][3] = SATURATE(machine->Outputs[slot].xyzw[3].f[j]);
} else {
output[slot][0] = machine->Outputs[slot].xyzw[0].f[j];
output[slot][1] = machine->Outputs[slot].xyzw[1].f[j];
output[slot][2] = machine->Outputs[slot].xyzw[2].f[j];
output[slot][3] = machine->Outputs[slot].xyzw[3].f[j];
}
}
#if 0
debug_printf("%d) Post xform vert:\n", i + j);
for (slot = 0; slot < shader->info.num_outputs; slot++) {
debug_printf("\t%d: %f %f %f %f\n", slot,
output[slot][0],
output[slot][1],
output[slot][2],
output[slot][3]);
assert(!util_is_inf_or_nan(output[slot][0]));
}
#endif
output = (float (*)[4])((char *)output + output_stride);
}
}
}
static void
vs_exec_delete(struct draw_vertex_shader *dvs)
{
FREE((void*) dvs->state.tokens);
FREE(dvs);
}
struct draw_vertex_shader *
draw_create_vs_exec(struct draw_context *draw,
const struct pipe_shader_state *state)
{
struct exec_vertex_shader *vs = CALLOC_STRUCT(exec_vertex_shader);
if (!vs)
return NULL;
if (state->type == PIPE_SHADER_IR_NIR) {
vs->base.state.type = PIPE_SHADER_IR_TGSI;
vs->base.state.tokens = nir_to_tgsi(state->ir.nir, draw->pipe->screen);
} else {
assert(state->type == PIPE_SHADER_IR_TGSI);
vs->base.state.type = state->type;
/* we need to keep a local copy of the tokens */
vs->base.state.tokens = tgsi_dup_tokens(state->tokens);
if (!vs->base.state.tokens) {
FREE(vs);
return NULL;
}
}
tgsi_scan_shader(vs->base.state.tokens, &vs->base.info);
vs->base.state.stream_output = state->stream_output;
vs->base.draw = draw;
vs->base.prepare = vs_exec_prepare;
vs->base.run_linear = vs_exec_run_linear;
vs->base.delete = vs_exec_delete;
vs->base.create_variant = draw_vs_create_variant_generic;
vs->machine = draw->vs.tgsi.machine;
return &vs->base;
}
|
