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
|
/**************************************************************************
*
* 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.
*
**************************************************************************/
/* Author:
* Brian Paul
* Keith Whitwell
*/
#include "pipe/p_defines.h"
#include "pipe/p_context.h"
#include "util/u_prim.h"
#include "lp_context.h"
#include "lp_state.h"
#include "lp_query.h"
#include "draw/draw_context.h"
/**
* Draw vertex arrays, with optional indexing, optional instancing.
* All the other drawing functions are implemented in terms of this function.
* Basically, map the vertex buffers (and drawing surfaces), then hand off
* the drawing to the 'draw' module.
*/
static void
llvmpipe_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
{
struct llvmpipe_context *lp = llvmpipe_context(pipe);
struct draw_context *draw = lp->draw;
const void *mapped_indices = NULL;
unsigned i;
if (!llvmpipe_check_render_cond(lp))
return;
if (lp->dirty)
llvmpipe_update_derived( lp );
/*
* Map vertex buffers
*/
for (i = 0; i < lp->num_vertex_buffers; i++) {
const void *buf = lp->vertex_buffer[i].user_buffer;
size_t size = ~0;
if (!buf) {
if (!lp->vertex_buffer[i].buffer) {
continue;
}
buf = llvmpipe_resource_data(lp->vertex_buffer[i].buffer);
size = lp->vertex_buffer[i].buffer->width0;
}
draw_set_mapped_vertex_buffer(draw, i, buf, size);
}
/* Map index buffer, if present */
if (info->indexed) {
unsigned available_space = ~0;
mapped_indices = lp->index_buffer.user_buffer;
if (!mapped_indices) {
mapped_indices = llvmpipe_resource_data(lp->index_buffer.buffer);
if (lp->index_buffer.buffer->width0 > lp->index_buffer.offset)
available_space =
(lp->index_buffer.buffer->width0 - lp->index_buffer.offset);
else
available_space = 0;
}
draw_set_indexes(draw,
(ubyte *) mapped_indices + lp->index_buffer.offset,
lp->index_buffer.index_size, available_space);
}
for (i = 0; i < lp->num_so_targets; i++) {
void *buf = 0;
if (lp->so_targets[i]) {
buf = llvmpipe_resource(lp->so_targets[i]->target.buffer)->data;
lp->so_targets[i]->mapping = buf;
}
}
draw_set_mapped_so_targets(draw, lp->num_so_targets,
lp->so_targets);
llvmpipe_prepare_vertex_sampling(lp,
lp->num_sampler_views[PIPE_SHADER_VERTEX],
lp->sampler_views[PIPE_SHADER_VERTEX]);
llvmpipe_prepare_geometry_sampling(lp,
lp->num_sampler_views[PIPE_SHADER_GEOMETRY],
lp->sampler_views[PIPE_SHADER_GEOMETRY]);
if (lp->gs && lp->gs->no_tokens) {
/* we have an empty geometry shader with stream output, so
attach the stream output info to the current vertex shader */
if (lp->vs) {
draw_vs_attach_so(lp->vs, &lp->gs->stream_output);
}
}
draw_collect_pipeline_statistics(draw,
lp->active_statistics_queries > 0);
/* draw! */
draw_vbo(draw, info);
/*
* unmap vertex/index buffers
*/
for (i = 0; i < lp->num_vertex_buffers; i++) {
draw_set_mapped_vertex_buffer(draw, i, NULL, 0);
}
if (mapped_indices) {
draw_set_indexes(draw, NULL, 0, 0);
}
draw_set_mapped_so_targets(draw, 0, NULL);
if (lp->gs && lp->gs->no_tokens) {
/* we have attached stream output to the vs for rendering,
now lets reset it */
if (lp->vs) {
draw_vs_reset_so(lp->vs);
}
}
llvmpipe_cleanup_vertex_sampling(lp);
llvmpipe_cleanup_geometry_sampling(lp);
/*
* TODO: Flush only when a user vertex/index buffer is present
* (or even better, modify draw module to do this
* internally when this condition is seen?)
*/
draw_flush(draw);
}
void
llvmpipe_init_draw_funcs(struct llvmpipe_context *llvmpipe)
{
llvmpipe->pipe.draw_vbo = llvmpipe_draw_vbo;
}
|
