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
|
/*
* Copyright (c) The Piglit project 2008
*
* 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
* on 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
* VA LINUX SYSTEM, IBM AND/OR THEIR 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.
*/
/**
* @file
* Test whether rendering does not bleed into areas outside the window.
* This is done by creating a subwindow and verifying that rendering in
* the main window vs. in the sub window is clipped correctly.
*
* This test was prompted by http://bugs.freedesktop.org/show_bug.cgi?id=16123
*/
#include "piglit-util-gl.h"
static const int MainWidth = 128, MainHeight = 128;
static const int SubX = 32, SubY = 32;
static const int SubWidth = 64, SubHeight = 64;
static int Automatic = 0;
static int MainWindow;
static int SubWindow;
static int verify(float mainr, float maing, float mainb, float subr, float subg, float subb, const char* testname)
{
float mainf[128][128][3];
float sub[64][64][3];
int x, y;
glutSetWindow(MainWindow);
glReadPixels(0, 0, 128, 128, GL_RGB, GL_FLOAT, mainf);
glutSetWindow(SubWindow);
glReadPixels(0, 0, 64, 64, GL_RGB, GL_FLOAT, sub);
for(x = 0; x < 128; ++x) {
for(y = 0; y < 128; ++y) {
float delta;
if (x >= 32 && x < 96 && y >= 32 && y < 96)
continue;
delta = fabs(mainr - mainf[y][x][0]) + fabs(maing - mainf[y][x][1]) + fabs(mainb - mainf[y][x][2]);
if (delta > 0.01) {
printf("Test %s: Fail at main window pixel %i,%i\n", testname, x, y);
printf(" Expected: %5.3f %5.2f %5.3f\n", mainr, maing, mainb);
printf(" Actual: %5.3f %5.2f %5.3f\n", mainf[y][x][0], mainf[y][x][1], mainf[y][x][2]);
return 0;
}
}
}
for(x = 0; x < 64; ++x) {
for(y = 0; y < 64; ++y) {
float delta;
delta = fabs(subr - sub[y][x][0]) + fabs(subg - sub[y][x][1]) + fabs(subb - sub[y][x][2]);
if (delta > 0.01) {
printf("Test %s: Fail at sub window pixel %i,%i\n", testname, x, y);
printf(" Expected: %5.3f %5.2f %5.3f\n", subr, subg, subb);
printf(" Actual: %5.3f %5.2f %5.3f\n", sub[y][x][0], sub[y][x][1], sub[y][x][2]);
return 0;
}
}
}
return 1;
}
static void test(void)
{
int success = 1;
glutSetWindow(MainWindow);
glClearColor(1, 0, 0, 0);
glClear(GL_COLOR_BUFFER_BIT);
glFinish();
glutSetWindow(SubWindow);
glClearColor(0, 1, 0, 0);
glClear(GL_COLOR_BUFFER_BIT);
glFinish();
success = success && verify(1, 0, 0, 0, 1, 0, "initial clear");
glutSetWindow(MainWindow);
glClearColor(0, 0, 1, 0);
glClear(GL_COLOR_BUFFER_BIT);
glFinish();
success = success && verify(0, 0, 1, 0, 1, 0, "re-clear main window");
glutSetWindow(SubWindow);
glColor3f(1, 1, 0);
glBegin(GL_QUADS);
glVertex2f(-1, -1);
glVertex2f( 2, -1);
glVertex2f( 2, 2);
glVertex2f(-1, 2);
glEnd();
glFinish();
success = success && verify(0, 0, 1, 1, 1, 0, "render in sub window");
glutSetWindow(MainWindow);
glColor3f(0, 1, 1);
glBegin(GL_QUADS);
glVertex2f(-1, -1);
glVertex2f( 2, -1);
glVertex2f( 2, 2);
glVertex2f(-1, 2);
glEnd();
glFinish();
success = success && verify(0, 1, 1, 1, 1, 0, "render in main window");
if (Automatic)
piglit_report_result(success ? PIGLIT_PASS : PIGLIT_FAIL);
}
static void RedisplayMain(void)
{
test();
}
static void RedisplaySub(void)
{
test();
}
static void Reshape(int width, int height)
{
glViewport(0, 0, width, height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0.0, 1.0, 0.0, 1.0, -1.0, 1.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
}
static void Key(unsigned char key, int x, int y)
{
(void) x;
(void) y;
switch (key) {
case 27:
exit(0);
break;
}
glutPostRedisplay();
}
int main(int argc, char *argv[])
{
glutInit(&argc, argv);
if (argc == 2 && !strcmp(argv[1], "-auto"))
Automatic = 1;
glutInitWindowPosition(0, 0);
glutInitWindowSize(MainWidth, MainHeight);
glutInitDisplayMode(PIGLIT_GL_VISUAL_RGB);
glutCreateWindow(argv[0]);
piglit_dispatch_default_init(PIGLIT_DISPATCH_GL);
glutReshapeFunc(Reshape);
glutDisplayFunc(RedisplayMain);
if (!Automatic)
glutKeyboardFunc(Key);
MainWindow = glutGetWindow();
SubWindow = glutCreateSubWindow(MainWindow, SubX, SubY, SubWidth, SubHeight);
glutReshapeFunc(Reshape);
glutDisplayFunc(RedisplaySub);
glutMainLoop();
return 0;
}
|
