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26 * @brief Test GL_FIXED with attribute arrays in OpenGL ES 1.1.
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
32 * This tests Mesa commit 7a9f4d3e for Intel gen4+.
35 #include "piglit-util-gl.h"
37 PIGLIT_GL_TEST_CONFIG_BEGIN
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
;
43 PIGLIT_GL_TEST_CONFIG_END
45 /* From the GL_OES_fixed_point spec, GL_FIXED represents a
46 * "signed 2's complement S15.16 scaled integer".
48 #define ONE 0x00010000
49 #define HALF 0x00008000
51 /* Vertices for the window's left half. */
52 static const GLfixed left_vertices
[] = {
59 /* Vertices for the window's right half. */
60 static const GLfixed right_vertices
[] = {
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
[] = {
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
[] = {
90 glClearColor(0, 0, 0, 1);
91 glClear(GL_COLOR_BUFFER_BIT
);
93 glEnableClientState(GL_VERTEX_ARRAY
);
94 glEnableClientState(GL_COLOR_ARRAY
);
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);
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);
106 /* Probe the window's left half. */
107 pass
&= piglit_probe_rect_rgba(
109 piglit_width
/ 2, piglit_height
/ 2,
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,
118 piglit_present_results();
120 return pass
? PIGLIT_PASS
: PIGLIT_FAIL
;
124 piglit_init(int argc
, char **argv
)
126 piglit_require_extension("GL_OES_fixed_point");