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
|
/*
* Copyright © 2011 Intel Corporation
*
* 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.
*/
#include "piglit-util.h"
/**
* @file discard-bitmap.c
*
* Tests that GL_RASTERIZER_DISCARD appropriately affects glBitmap().
*
* From the EXT_transform_feedback spec:
*
* "Primitives can be optionally discarded before rasterization by
* calling Enable and Disable with RASTERIZER_DISCARD_EXT. When
* enabled, primitives are discared right before the
* rasterization stage, but after the optional transform feedback
* stage. When disabled, primitives are passed through to the
* rasterization stage to be processed
* normally. RASTERIZER_DISCARD_EXT applies to the DrawPixels,
* CopyPixels, Bitmap, Clear and Accum commands as well."
*/
PIGLIT_GL_TEST_MAIN(
32 /*window_width*/,
32 /*window_height*/,
GLUT_DOUBLE | GLUT_RGB | GLUT_ALPHA)
enum piglit_result
piglit_display(void)
{
bool pass = true;
float green[4] = {0.0, 1.0, 0.0, 0.0};
void *buf;
/* Massively overallocate the bitmap, and set it to all on */
buf = malloc(piglit_width * piglit_height);
memset(buf, 0xff, piglit_width * piglit_height);
glClearColor(0.5, 0.5, 0.5, 0.5);
glClear(GL_COLOR_BUFFER_BIT);
/* Bitmap render that should draw the whole screen. */
glDisable(GL_RASTERIZER_DISCARD);
glColor4f(0.0, 1.0, 0.0, 0.0);
glRasterPos2i(-1, -1);
glBitmap(piglit_width, piglit_height, 0, 0, 0, 0, buf);
/* Bitmap render that should not draw full screen. */
glEnable(GL_RASTERIZER_DISCARD);
glColor4f(1.0, 0.0, 0.0, 0.0);
glRasterPos2i(-1, -1);
glBitmap(piglit_width, piglit_height, 0, 0, 0, 0, buf);
glDisable(GL_RASTERIZER_DISCARD);
pass = piglit_probe_rect_rgba(0, 0, piglit_width, piglit_height, green);
piglit_present_results();
free(buf);
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
void
piglit_init(int argc, char **argv)
{
piglit_require_transform_feedback();
}
|
