1 /*
2 * Copyright © 2013 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24 /**
25 * @file
26 * @brief Test GL_FIXED with attribute arrays in OpenGL ES 1.1.
27 *
28 * This test paints the window's left half green and window's right half dark
29 * blue. It uses the GL_FIXED data type for glVertexPointer and
30 * glColorPointer.
31 *
32 * This tests Mesa commit 7a9f4d3e for Intel gen4+.
33 */
34
35 #include "piglit-util-gl.h"
36
37 PIGLIT_GL_TEST_CONFIG_BEGIN
38
39 config.supports_gl_es_version = 11;
40 config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
41 config.khr_no_error_support = PIGLIT_NO_ERRORS;
42
43 PIGLIT_GL_TEST_CONFIG_END
44
45 /* From the GL_OES_fixed_point spec, GL_FIXED represents a
46 * "signed 2's complement S15.16 scaled integer".
47 */
48 #define ONE 0x00010000
49 #define HALF 0x00008000
50
51 /* Vertices for the window's left half. */
52 static const GLfixed left_vertices[] = {
53 -ONE, -ONE,
54 0, -ONE,
55 0, +ONE,
56 -ONE, +ONE,
57 };
58
59 /* Vertices for the window's right half. */
60 static const GLfixed right_vertices[] = {
61 0, -ONE,
62 +ONE, -ONE,
63 +ONE, +ONE,
64 0, +ONE,
65 };
66
67 /* Green, color of the window's left half. */
68 static const GLfloat left_color_float[4] = {0, 1, 0, 1};
69 static const GLfixed left_colors_fixed[] = {
70 0, ONE, 0, ONE,
71 0, ONE, 0, ONE,
72 0, ONE, 0, ONE,
73 0, ONE, 0, ONE,
74 };
75
76 /* Dark blue, color of the window's right half. */
77 static const GLfloat right_color_float[4] = {0, 0, 0.5, 1};
78 static const GLfixed right_colors_fixed[] = {
79 0, 0, HALF, ONE,
80 0, 0, HALF, ONE,
81 0, 0, HALF, ONE,
82 0, 0, HALF, ONE,
83 };
84
85 enum piglit_result
piglit_display(void)86 piglit_display(void)
87 {
88 bool pass = true;
89
90 glClearColor(0, 0, 0, 1);
91 glClear(GL_COLOR_BUFFER_BIT);
92
93 glEnableClientState(GL_VERTEX_ARRAY);
94 glEnableClientState(GL_COLOR_ARRAY);
95
96 /* Paint the window's left half. */
97 glVertexPointer(2, GL_FIXED, 0, left_vertices);
98 glColorPointer(4, GL_FIXED, 0, left_colors_fixed);
99 glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
100
101 /* Paint the window's right half.*/
102 glVertexPointer(2, GL_FIXED, 0, right_vertices);
103 glColorPointer(4, GL_FIXED, 0, right_colors_fixed);
104 glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
105
106 /* Probe the window's left half. */
107 pass &= piglit_probe_rect_rgba(
108 0, 0,
109 piglit_width / 2, piglit_height / 2,
110 left_color_float);
111
112 /* Probe the window's right half. */
113 pass &= piglit_probe_rect_rgba(
114 (piglit_width + 1) / 2, (piglit_height + 1) / 2,
115 (piglit_width - 1) / 2, (piglit_height - 1) / 2,
116 right_color_float);
117
118 piglit_present_results();
119
120 return pass ? PIGLIT_PASS : PIGLIT_FAIL;
121 }
122
123 void
piglit_init(int argc,char ** argv)124 piglit_init(int argc, char **argv)
125 {
126 piglit_require_extension("GL_OES_fixed_point");
127 }
128