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
|
/**************************************************************************
*
* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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 TUNGSTEN GRAPHICS 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.
*
**************************************************************************/
#include "util/u_math.h"
#include "util/u_memory.h"
#include "pipe/p_shader_tokens.h"
#include "draw/draw_context.h"
#include "draw/draw_vertex.h"
#include "draw/draw_private.h"
#include "lp_context.h"
#include "lp_screen.h"
#include "lp_setup.h"
#include "lp_state.h"
/**
* The vertex info describes how to convert the post-transformed vertices
* (simple float[][4]) used by the 'draw' module into vertices for
* rasterization.
*
* This function validates the vertex layout.
*/
static void
compute_vertex_info(struct llvmpipe_context *llvmpipe)
{
const struct lp_fragment_shader *lpfs = llvmpipe->fs;
struct vertex_info *vinfo = &llvmpipe->vertex_info;
struct lp_shader_input *inputs = llvmpipe->inputs;
unsigned vs_index;
uint i;
/*
* Match FS inputs against VS outputs, emitting the necessary attributes.
*/
vinfo->num_attribs = 0;
vs_index = draw_find_shader_output(llvmpipe->draw,
TGSI_SEMANTIC_POSITION,
0);
draw_emit_vertex_attr(vinfo, EMIT_4F, INTERP_PERSPECTIVE, vs_index);
for (i = 0; i < lpfs->info.num_inputs; i++) {
/*
* Search for each input in current vs output:
*/
vs_index = draw_find_shader_output(llvmpipe->draw,
lpfs->info.input_semantic_name[i],
lpfs->info.input_semantic_index[i]);
if (vs_index < 0) {
/*
* This can happen with sprite coordinates - the vertex
* shader doesn't need to provide an output as we generate
* them internally. However, lets keep pretending that there
* is something there to not confuse other code.
*/
vs_index = 0;
}
/* This can be pre-computed, except for flatshade:
*/
inputs[i].usage_mask = lpfs->info.input_usage_mask[i];
switch (lpfs->info.input_interpolate[i]) {
case TGSI_INTERPOLATE_CONSTANT:
inputs[i].interp = LP_INTERP_CONSTANT;
break;
case TGSI_INTERPOLATE_LINEAR:
inputs[i].interp = LP_INTERP_LINEAR;
break;
case TGSI_INTERPOLATE_PERSPECTIVE:
inputs[i].interp = LP_INTERP_PERSPECTIVE;
break;
default:
assert(0);
break;
}
switch (lpfs->info.input_semantic_name[i]) {
case TGSI_SEMANTIC_FACE:
inputs[i].interp = LP_INTERP_FACING;
break;
case TGSI_SEMANTIC_POSITION:
/* Position was already emitted above
*/
inputs[i].interp = LP_INTERP_POSITION;
inputs[i].src_index = 0;
continue;
case TGSI_SEMANTIC_COLOR:
/* Colors are linearly inputs[i].interpolated in the fragment shader
* even when flatshading is active. This just tells the
* setup module to use coefficients with ddx==0 and
* ddy==0.
*/
if (llvmpipe->rasterizer->flatshade)
inputs[i].interp = LP_INTERP_CONSTANT;
break;
default:
break;
}
/*
* Emit the requested fs attribute for all but position.
*/
inputs[i].src_index = vinfo->num_attribs;
draw_emit_vertex_attr(vinfo, EMIT_4F, INTERP_PERSPECTIVE, vs_index);
}
/* Figure out if we need pointsize as well.
*/
vs_index = draw_find_shader_output(llvmpipe->draw,
TGSI_SEMANTIC_PSIZE, 0);
if (vs_index > 0) {
llvmpipe->psize_slot = vinfo->num_attribs;
draw_emit_vertex_attr(vinfo, EMIT_4F, INTERP_CONSTANT, vs_index);
}
llvmpipe->num_inputs = lpfs->info.num_inputs;
draw_compute_vertex_size(vinfo);
lp_setup_set_vertex_info(llvmpipe->setup, vinfo);
lp_setup_set_fs_inputs(llvmpipe->setup,
inputs,
lpfs->info.num_inputs);
}
/**
* Handle state changes.
* Called just prior to drawing anything (pipe::draw_arrays(), etc).
*
* Hopefully this will remain quite simple, otherwise need to pull in
* something like the state tracker mechanism.
*/
void llvmpipe_update_derived( struct llvmpipe_context *llvmpipe )
{
struct llvmpipe_screen *lp_screen = llvmpipe_screen(llvmpipe->pipe.screen);
/* Check for updated textures.
*/
if (llvmpipe->tex_timestamp != lp_screen->timestamp) {
llvmpipe->tex_timestamp = lp_screen->timestamp;
llvmpipe->dirty |= LP_NEW_SAMPLER_VIEW;
}
if (llvmpipe->dirty & (LP_NEW_RASTERIZER |
LP_NEW_FS |
LP_NEW_VS))
compute_vertex_info( llvmpipe );
if (llvmpipe->dirty & (LP_NEW_FS |
LP_NEW_BLEND |
LP_NEW_SCISSOR |
LP_NEW_DEPTH_STENCIL_ALPHA |
LP_NEW_RASTERIZER |
LP_NEW_SAMPLER |
LP_NEW_SAMPLER_VIEW |
LP_NEW_QUERY))
llvmpipe_update_fs( llvmpipe );
if (llvmpipe->dirty & LP_NEW_BLEND_COLOR)
lp_setup_set_blend_color(llvmpipe->setup,
&llvmpipe->blend_color);
if (llvmpipe->dirty & LP_NEW_SCISSOR)
lp_setup_set_scissor(llvmpipe->setup, &llvmpipe->scissor);
if (llvmpipe->dirty & LP_NEW_DEPTH_STENCIL_ALPHA) {
lp_setup_set_alpha_ref_value(llvmpipe->setup,
llvmpipe->depth_stencil->alpha.ref_value);
lp_setup_set_stencil_ref_values(llvmpipe->setup,
llvmpipe->stencil_ref.ref_value);
}
if (llvmpipe->dirty & LP_NEW_CONSTANTS)
lp_setup_set_fs_constants(llvmpipe->setup,
llvmpipe->constants[PIPE_SHADER_FRAGMENT][0]);
if (llvmpipe->dirty & (LP_NEW_SAMPLER_VIEW))
lp_setup_set_fragment_sampler_views(llvmpipe->setup,
llvmpipe->num_fragment_sampler_views,
llvmpipe->fragment_sampler_views);
if (llvmpipe->dirty & (LP_NEW_SAMPLER))
lp_setup_set_fragment_sampler_state(llvmpipe->setup,
llvmpipe->num_samplers,
llvmpipe->sampler);
llvmpipe->dirty = 0;
}
|
