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/*
* 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"
int piglit_width = 96, piglit_height = 96;
int piglit_window_mode = GLUT_RGB | GLUT_ALPHA | GLUT_DOUBLE;
enum piglit_result
piglit_display(void)
{
bool pass = true;
int x, y;
float gray[4] = {0.5, 0.5, 0.5, 0.5};
float green[4] = {0.0, 1.0, 0.0, 0.0};
glClearColor(0.5, 0.5, 0.5, 0.5);
glClear(GL_COLOR_BUFFER_BIT);
glLoadIdentity();
piglit_ortho_projection(piglit_width, piglit_height, false);
glColor4f(0.0, 1.0, 0.0, 0.0);
for (x = 0; x <= 5; x++) {
for (y = 0; y <= 5; y++) {
float x1 = 5 + (10 + 5) * x + y * 0.2;
float y1 = 5 + (10 + 5) * y + x * 0.2;
piglit_draw_rect(x1, y1, 10, 10);
}
}
for (x = 0; x <= 5; x++) {
for (y = 0; y <= 5; y++) {
int x1 = 5 + (10 + 5) * x;
int y1 = 5 + (10 + 5) * y;
bool p = true;
if (x >= 3)
y1++;
if (y >= 3)
x1++;
p = p && piglit_probe_rect_rgba(x1, y1, 10, 10, green);
p = p && piglit_probe_rect_rgba(x1 - 1, y1,
1, 10, gray);
p = p && piglit_probe_rect_rgba(x1 + 10, y1,
1, 10, gray);
p = p && piglit_probe_rect_rgba(x1, y1 - 1,
10, 1, gray);
p = p && piglit_probe_rect_rgba(x1, y1 + 10,
10, 1, gray);
if (!p) {
printf("Failure on rectangle (%d, %d): "
"offset (%f, %f)\n",
x, y, y * 0.2, x * 0.2);
pass = false;
}
}
}
glutSwapBuffers();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
void
piglit_init(int argc, char **argv)
{
printf("The test's expectation is that the implementation samples\n"
"at pixel centers to produce fragments, so the fourth\n"
"(subpixel offset = 0.6) rectangle in each axis will\n"
"be offset compared to the previous.\n\n");
piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
}
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