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
|
/**************************************************************************
*
* Copyright 2007 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.
*
**************************************************************************/
/**
* \brief Primitive rasterization/rendering (points, lines)
*
* \author Keith Whitwell <keith@tungstengraphics.com>
* \author Brian Paul
*/
#include "lp_context.h"
#include "lp_quad.h"
#include "lp_quad_pipe.h"
#include "lp_setup.h"
#include "lp_state.h"
#include "draw/draw_context.h"
#include "draw/draw_private.h"
#include "draw/draw_vertex.h"
#include "pipe/p_shader_tokens.h"
#include "pipe/p_thread.h"
#include "util/u_math.h"
#include "util/u_memory.h"
#define DEBUG_VERTS 0
void
llvmpipe_setup_flush()
{
}
void
llvmpipe_setup_bind_framebuffer()
{
}
void
llvmpipe_setup_clear()
{
}
/* Stubs for lines & points for now:
*/
void
llvmpipe_setup_point(struct setup_context *setup,
const float (*v0)[4])
{
}
void
llvmpipe_setup_line(struct setup_context *setup,
const float (*v0)[4],
const float (*v1)[4])
{
}
/* Called after statechange, before emitting primitives. If binning
* is active, this function should store relevant state in the binning
* context.
*
* That includes:
* - current fragment shader function
* - bound constant buffer contents
* - bound textures
* - blend color
* - etc.
*
* Basically everything needed at some point in the future to
* rasterize triangles for the current state.
*
* Additionally this will set up the state needed for the rasterizer
* to process and bin incoming triangles. That would include such
* things as:
* - cull mode
* - ???
* - etc.
*
*/
void setup_prepare( struct setup_context *setup )
{
struct llvmpipe_context *lp = setup->llvmpipe;
if (lp->dirty) {
llvmpipe_update_derived(lp);
}
lp->quad.first->begin( lp->quad.first );
if (lp->reduced_api_prim == PIPE_PRIM_TRIANGLES &&
lp->rasterizer->fill_cw == PIPE_POLYGON_MODE_FILL &&
lp->rasterizer->fill_ccw == PIPE_POLYGON_MODE_FILL) {
/* we'll do culling */
setup->winding = lp->rasterizer->cull_mode;
}
else {
/* 'draw' will do culling */
setup->winding = PIPE_WINDING_NONE;
}
setup_prepare_tri( setup->llvmpipe );
}
void setup_destroy_context( struct setup_context *setup )
{
FREE( setup );
}
/**
* Create a new primitive setup/render stage.
*/
struct setup_context *setup_create_context( struct llvmpipe_context *llvmpipe )
{
struct setup_context *setup = CALLOC_STRUCT(setup_context);
unsigned i;
setup->llvmpipe = llvmpipe;
return setup;
}
|
