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/*
* 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.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_SUCCESS : PIGLIT_FAILURE);
}
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(GLUT_RGB);
glutCreateWindow(argv[0]);
glutReshapeFunc(Reshape);
glutDisplayFunc(RedisplayMain);
if (!Automatic)
glutKeyboardFunc(Key);
MainWindow = glutGetWindow();
SubWindow = glutCreateSubWindow(MainWindow, SubX, SubY, SubWidth, SubHeight);
glutReshapeFunc(Reshape);
glutDisplayFunc(RedisplaySub);
glutMainLoop();
return 0;
}
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