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
|
/*
* Copyright © 2011 VMware, Inc.
*
* 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, sublicense,
* 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 NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS 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.
*/
/**
* Tests simple two-sided lighting.
*
* One command line option: if "flat" is specified, use flat shading.
* It shouldn't make any difference though because we only specify one normal
* vector per quad.
*
* Brian Paul
* Oct 2011
*/
#include "piglit-util-gl.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_compat_version = 10;
config.window_width = 256;
config.window_height = 256;
config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
PIGLIT_GL_TEST_CONFIG_END
static const GLfloat green[4] = {0, 1, 0, 1};
static const GLfloat blue[4] = {0, 0, 1, 1};
enum piglit_result
piglit_display(void)
{
int x0 = piglit_width * 1 / 4;
int x1 = piglit_width * 3 / 4;
int y0 = piglit_height * 1 / 4;
int y1 = piglit_height * 3 / 4;
GLboolean pass = GL_TRUE;
glClear(GL_COLOR_BUFFER_BIT);
glFrontFace(GL_CCW); /* the default winding */
glBegin(GL_QUADS);
/* counter-clockwise / front-facing */
glNormal3f(0, 0, 1);
glVertex2f(-1.0, -1.0);
glVertex2f( 0.0, -1.0);
glVertex2f( 0.0, 0.0);
glVertex2f(-1.0, 0.0);
/* clockwise / back-facing */
glNormal3f(0, 0, -1);
glVertex2f( 0.0, -1.0);
glVertex2f( 0.0, 0.0);
glVertex2f( 1.0, 0.0);
glVertex2f( 1.0, -1.0);
glEnd();
glFrontFace(GL_CW); /* reverse winding */
glBegin(GL_QUADS);
/* counter-clockwise / back-facing */
glNormal3f(0, 0, -1);
glVertex2f(-1.0, 0.0);
glVertex2f( 0.0, 0.0);
glVertex2f( 0.0, 1.0);
glVertex2f(-1.0, 1.0);
/* clockwise / front-facing */
glNormal3f(0, 0, 1);
glVertex2f( 0.0, 0.0);
glVertex2f( 0.0, 1.0);
glVertex2f( 1.0, 1.0);
glVertex2f( 1.0, 0.0);
glEnd();
pass = piglit_probe_pixel_rgb(x0, y0, green) && pass;
pass = piglit_probe_pixel_rgb(x1, y0, blue) && pass;
pass = piglit_probe_pixel_rgb(x0, y1, blue) && pass;
pass = piglit_probe_pixel_rgb(x1, y1, green) && pass;
piglit_present_results();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
void
piglit_init(int argc, char **argv)
{
int i;
for (i = 1; i < argc; i++) {
if (strcmp(argv[i], "flat") == 0) {
glShadeModel(GL_FLAT);
break;
}
}
glClearColor(0.5, 0.5, 0.5, 0.0);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(-1.1, 1.1, -1.1, 1.1, -1.0, 1.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, green);
glMaterialfv(GL_BACK, GL_AMBIENT_AND_DIFFUSE, blue);
glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE);
glEnable(GL_LIGHT0);
glEnable(GL_LIGHTING);
}
|
