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
254
|
/**************************************************************************
*
* 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_tex_cache.h"
#include "lp_state.h"
/**
* Mark the current vertex layout as "invalid".
* We'll validate the vertex layout later, when we start to actually
* render a point or line or tri.
*/
static void
invalidate_vertex_layout(struct llvmpipe_context *llvmpipe)
{
llvmpipe->vertex_info.num_attribs = 0;
}
/**
* 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 and returns a pointer to a
* vertex_info object.
*/
struct vertex_info *
llvmpipe_get_vertex_info(struct llvmpipe_context *llvmpipe)
{
struct vertex_info *vinfo = &llvmpipe->vertex_info;
if (vinfo->num_attribs == 0) {
/* compute vertex layout now */
const struct lp_fragment_shader *lpfs = llvmpipe->fs;
const enum interp_mode colorInterp
= llvmpipe->rasterizer->flatshade ? INTERP_CONSTANT : INTERP_LINEAR;
uint i;
if (llvmpipe->vbuf) {
/* if using the post-transform vertex buffer, tell draw_vbuf to
* simply emit the whole post-xform vertex as-is:
*/
struct vertex_info *vinfo_vbuf = &llvmpipe->vertex_info_vbuf;
const uint num = draw_num_vs_outputs(llvmpipe->draw);
uint i;
/* No longer any need to try and emit draw vertex_header info.
*/
vinfo_vbuf->num_attribs = 0;
for (i = 0; i < num; i++) {
draw_emit_vertex_attr(vinfo_vbuf, EMIT_4F, INTERP_PERSPECTIVE, i);
}
draw_compute_vertex_size(vinfo_vbuf);
}
/*
* Loop over fragment shader inputs, searching for the matching output
* from the vertex shader.
*/
vinfo->num_attribs = 0;
for (i = 0; i < lpfs->info.num_inputs; i++) {
int src;
switch (lpfs->info.input_semantic_name[i]) {
case TGSI_SEMANTIC_POSITION:
src = draw_find_vs_output(llvmpipe->draw,
TGSI_SEMANTIC_POSITION, 0);
draw_emit_vertex_attr(vinfo, EMIT_4F, INTERP_POS, src);
break;
case TGSI_SEMANTIC_COLOR:
src = draw_find_vs_output(llvmpipe->draw, TGSI_SEMANTIC_COLOR,
lpfs->info.input_semantic_index[i]);
draw_emit_vertex_attr(vinfo, EMIT_4F, colorInterp, src);
break;
case TGSI_SEMANTIC_FOG:
src = draw_find_vs_output(llvmpipe->draw, TGSI_SEMANTIC_FOG, 0);
draw_emit_vertex_attr(vinfo, EMIT_4F, INTERP_PERSPECTIVE, src);
break;
case TGSI_SEMANTIC_GENERIC:
case TGSI_SEMANTIC_FACE:
/* this includes texcoords and varying vars */
src = draw_find_vs_output(llvmpipe->draw, TGSI_SEMANTIC_GENERIC,
lpfs->info.input_semantic_index[i]);
draw_emit_vertex_attr(vinfo, EMIT_4F, INTERP_PERSPECTIVE, src);
break;
default:
assert(0);
}
}
llvmpipe->psize_slot = draw_find_vs_output(llvmpipe->draw,
TGSI_SEMANTIC_PSIZE, 0);
if (llvmpipe->psize_slot > 0) {
draw_emit_vertex_attr(vinfo, EMIT_4F, INTERP_CONSTANT,
llvmpipe->psize_slot);
}
draw_compute_vertex_size(vinfo);
}
return vinfo;
}
/**
* Called from vbuf module.
*
* Note that there's actually two different vertex layouts in llvmpipe.
*
* The normal one is computed in llvmpipe_get_vertex_info() above and is
* used by the point/line/tri "setup" code.
*
* The other one (this one) is only used by the vbuf module (which is
* not normally used by default but used in testing). For the vbuf module,
* we basically want to pass-through the draw module's vertex layout as-is.
* When the llvmpipe vbuf code begins drawing, the normal vertex layout
* will come into play again.
*/
struct vertex_info *
llvmpipe_get_vbuf_vertex_info(struct llvmpipe_context *llvmpipe)
{
(void) llvmpipe_get_vertex_info(llvmpipe);
return &llvmpipe->vertex_info_vbuf;
}
/**
* Recompute cliprect from scissor bounds, scissor enable and surface size.
*/
static void
compute_cliprect(struct llvmpipe_context *lp)
{
/* LP_NEW_FRAMEBUFFER
*/
uint surfWidth = lp->framebuffer.width;
uint surfHeight = lp->framebuffer.height;
/* LP_NEW_RASTERIZER
*/
if (lp->rasterizer->scissor) {
/* LP_NEW_SCISSOR
*
* clip to scissor rect:
*/
lp->cliprect.minx = MAX2(lp->scissor.minx, 0);
lp->cliprect.miny = MAX2(lp->scissor.miny, 0);
lp->cliprect.maxx = MIN2(lp->scissor.maxx, surfWidth);
lp->cliprect.maxy = MIN2(lp->scissor.maxy, surfHeight);
}
else {
/* clip to surface bounds */
lp->cliprect.minx = 0;
lp->cliprect.miny = 0;
lp->cliprect.maxx = surfWidth;
lp->cliprect.maxy = surfHeight;
}
}
static void
update_tgsi_samplers( struct llvmpipe_context *llvmpipe )
{
unsigned i;
/* vertex shader samplers */
for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
llvmpipe->tgsi.vert_samplers[i].sampler = llvmpipe->sampler[i];
llvmpipe->tgsi.vert_samplers[i].texture = llvmpipe->texture[i];
}
/* fragment shader samplers */
for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
llvmpipe->tgsi.frag_samplers[i].sampler = llvmpipe->sampler[i];
llvmpipe->tgsi.frag_samplers[i].texture = llvmpipe->texture[i];
}
for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
lp_tex_tile_cache_validate_texture( llvmpipe->tex_cache[i] );
}
}
/* 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_TEXTURE;
}
if (llvmpipe->dirty & (LP_NEW_SAMPLER |
LP_NEW_TEXTURE))
update_tgsi_samplers( llvmpipe );
if (llvmpipe->dirty & (LP_NEW_RASTERIZER |
LP_NEW_FS |
LP_NEW_VS))
invalidate_vertex_layout( llvmpipe );
if (llvmpipe->dirty & (LP_NEW_SCISSOR |
LP_NEW_RASTERIZER |
LP_NEW_FRAMEBUFFER))
compute_cliprect(llvmpipe);
if (llvmpipe->dirty & (LP_NEW_BLEND |
LP_NEW_DEPTH_STENCIL_ALPHA |
LP_NEW_FRAMEBUFFER |
LP_NEW_FS))
lp_build_quad_pipeline(llvmpipe);
llvmpipe->dirty = 0;
}
|
