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
|
/**************************************************************************
*
* 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.
*
**************************************************************************/
/*
* Authors:
* Keith Whitwell <keith@tungstengraphics.com>
*/
#include "st_context.h"
#include "st_cache.h"
#include "pipe/p_context.h"
#include "pipe/p_defines.h"
#include "st_atom.h"
static GLuint translate_fill( GLenum mode )
{
switch (mode) {
case GL_POINT:
return PIPE_POLYGON_MODE_POINT;
case GL_LINE:
return PIPE_POLYGON_MODE_LINE;
case GL_FILL:
return PIPE_POLYGON_MODE_FILL;
default:
assert(0);
return 0;
}
}
static GLboolean get_offset_flag( GLuint fill_mode,
const struct gl_polygon_attrib *p )
{
switch (fill_mode) {
case PIPE_POLYGON_MODE_POINT:
return p->OffsetPoint;
case PIPE_POLYGON_MODE_LINE:
return p->OffsetLine;
case PIPE_POLYGON_MODE_FILL:
return p->OffsetFill;
default:
assert(0);
return 0;
}
}
static void update_raster_state( struct st_context *st )
{
GLcontext *ctx = st->ctx;
struct pipe_rasterizer_state raster;
const struct cso_rasterizer *cso;
uint i;
memset(&raster, 0, sizeof(raster));
raster.origin_lower_left = 1; /* Always true for OpenGL */
/* _NEW_POLYGON, _NEW_BUFFERS
*/
{
if (ctx->Polygon.FrontFace == GL_CCW)
raster.front_winding = PIPE_WINDING_CCW;
else
raster.front_winding = PIPE_WINDING_CW;
/* XXX
* I think the intention here is that user-created framebuffer objects
* use Y=0=TOP layout instead of OpenGL's normal Y=0=bottom layout.
* Flipping Y changes CW to CCW and vice-versa.
* But this is an implementation/driver-specific artifact - remove...
*/
if (ctx->DrawBuffer && ctx->DrawBuffer->Name != 0)
raster.front_winding ^= PIPE_WINDING_BOTH;
}
/* _NEW_LIGHT
*/
if (ctx->Light.ShadeModel == GL_FLAT)
raster.flatshade = 1;
/* _NEW_LIGHT | _NEW_PROGRAM
*
* Back-face colors can come from traditional lighting (when
* GL_LIGHT_MODEL_TWO_SIDE is set) or from vertex programs (when
* GL_VERTEX_PROGRAM_TWO_SIDE is set). Note the logic here.
*/
if (ctx->VertexProgram._Enabled) {
raster.light_twoside = ctx->VertexProgram.TwoSideEnabled;
}
else if (ctx->Light.Enabled && ctx->Light.Model.TwoSide) {
raster.light_twoside = 1;
}
/* _NEW_POLYGON
*/
if (ctx->Polygon.CullFlag) {
if (ctx->Polygon.CullFaceMode == GL_FRONT_AND_BACK) {
raster.cull_mode = PIPE_WINDING_BOTH;
}
else if (ctx->Polygon.CullFaceMode == GL_FRONT) {
raster.cull_mode = raster.front_winding;
}
else {
raster.cull_mode = raster.front_winding ^ PIPE_WINDING_BOTH;
}
}
/* _NEW_POLYGON
*/
{
GLuint fill_front = translate_fill( ctx->Polygon.FrontMode );
GLuint fill_back = translate_fill( ctx->Polygon.BackMode );
if (raster.front_winding == PIPE_WINDING_CW) {
raster.fill_cw = fill_front;
raster.fill_ccw = fill_back;
}
else {
raster.fill_cw = fill_back;
raster.fill_ccw = fill_front;
}
/* Simplify when culling is active:
*/
if (raster.cull_mode & PIPE_WINDING_CW) {
raster.fill_cw = raster.fill_ccw;
}
if (raster.cull_mode & PIPE_WINDING_CCW) {
raster.fill_ccw = raster.fill_cw;
}
}
/* _NEW_POLYGON
*/
if (ctx->Polygon.OffsetUnits != 0.0 ||
ctx->Polygon.OffsetFactor != 0.0) {
raster.offset_cw = get_offset_flag( raster.fill_cw, &ctx->Polygon );
raster.offset_ccw = get_offset_flag( raster.fill_ccw, &ctx->Polygon );
raster.offset_units = ctx->Polygon.OffsetUnits;
raster.offset_scale = ctx->Polygon.OffsetFactor;
}
if (ctx->Polygon.SmoothFlag)
raster.poly_smooth = 1;
if (ctx->Polygon.StippleFlag)
raster.poly_stipple_enable = 1;
/* _NEW_BUFFERS, _NEW_POLYGON
*/
if (raster.fill_cw != PIPE_POLYGON_MODE_FILL ||
raster.fill_ccw != PIPE_POLYGON_MODE_FILL)
{
GLfloat mrd = (ctx->DrawBuffer ?
ctx->DrawBuffer->_MRD :
1.0);
raster.offset_units = ctx->Polygon.OffsetFactor * mrd;
raster.offset_scale = (ctx->Polygon.OffsetUnits * mrd *
st->polygon_offset_scale);
}
/* _NEW_POINT
*/
raster.point_size = ctx->Point.Size;
raster.point_smooth = ctx->Point.SmoothFlag;
raster.point_sprite = ctx->Point.PointSprite;
for (i = 0; i < MAX_TEXTURE_COORD_UNITS; i++) {
if (ctx->Point.CoordReplace[i]) {
if (ctx->Point.SpriteOrigin == GL_UPPER_LEFT)
raster.sprite_coord_mode[i] = PIPE_SPRITE_COORD_UPPER_LEFT;
else
raster.sprite_coord_mode[i] = PIPE_SPRITE_COORD_LOWER_LEFT;
}
else {
raster.sprite_coord_mode[i] = PIPE_SPRITE_COORD_NONE;
}
}
raster.point_size_per_vertex = ctx->VertexProgram.PointSizeEnabled;
/* _NEW_LINE
*/
raster.line_width = ctx->Line.Width;
raster.line_smooth = ctx->Line.SmoothFlag;
raster.line_stipple_enable = ctx->Line.StippleFlag;
raster.line_stipple_pattern = ctx->Line.StipplePattern;
/* GL stipple factor is in [1,256], remap to [0, 255] here */
raster.line_stipple_factor = ctx->Line.StippleFactor - 1;
/* _NEW_MULTISAMPLE */
if (ctx->Multisample.Enabled)
raster.multisample = 1;
/* _NEW_SCISSOR */
if (ctx->Scissor.Enabled)
raster.scissor = 1;
cso = st_cached_rasterizer_state(st, &raster);
if (st->state.rasterizer != cso) {
st->state.rasterizer = cso;
st->pipe->bind_rasterizer_state(st->pipe, cso->data);
}
}
const struct st_tracked_state st_update_rasterizer = {
.name = "st_update_rasterizer",
.dirty = {
.mesa = (_NEW_LIGHT | _NEW_POLYGON | _NEW_LINE | _NEW_SCISSOR |
_NEW_POINT | _NEW_BUFFERS | _NEW_MULTISAMPLE),
.st = 0,
},
.update = update_raster_state
};
|
