Attachment 29580 Details for Bug 23670 – another small case

another small case

drawpix_depth_alpha.c (text/plain), 2.80 KB, created by Shuang He on 2009-09-15 20:37:59 UTC

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Creator: Shuang He

Created: 2009-09-15 20:37:59 UTC

Size: 2.80 KB

patch

obsolete

>/*
> * Copyright Â© 2009 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.
> *
> * Authors:
> *    Eric Anholt <eric@anholt.net>
> */
>
>/** @file depth_clamp.c
> * Tests ARB_depth_clamp functionality by drawing side-by-side triangles,
> * lines, points, and raster images that go behind the near plane, and
> * testing that when DEPTH_CLAMP is enabled they get rasterized as they should.
> *
> * An extension of this test would be to test that the depth values are
> * correctly clamped to the near/far plane, not just unclipped, and to test
> * the same operations against the far plane.
> */
>
>#include <stdlib.h>
>#include <stdio.h>
>#include <string.h>
>#include <GL/glew.h>
>#if defined(__APPLE__)
>#include <GLUT/glut.h>
>#else
>#include <GL/glut.h>
>#endif
>
>#define WIN_WIDTH 100
>#define WIN_HEIGHT 100
>
>static void
>init(void)
>{
>	glMatrixMode(GL_PROJECTION);
>	glPushMatrix();
>	glLoadIdentity();
>	glOrtho(0, WIN_WIDTH, 0, WIN_HEIGHT, -1, 1);
>
>	glMatrixMode(GL_MODELVIEW);
>	glPushMatrix();
>	glLoadIdentity();
>}
>
>static void
>display(void)
>{
>	GLfloat buf[] = {1.0};
>
>	glDisable(GL_DITHER);
>
>	glDisable(GL_ALPHA_TEST);
>	glClearColor(0.0, 0.0, 0.0, 0.0);
>	glClear(GL_COLOR_BUFFER_BIT);
>
>	glEnable(GL_ALPHA_TEST);
>	glAlphaFunc(GL_ALWAYS, 0.5);
>
>	glColor4f(1.0, 1.0, 1.0, 0.3);
>	glRasterPos2f((float)0.0, (float)0.0);
>	glDrawPixels(1, 1, GL_DEPTH_COMPONENT, GL_FLOAT, buf);
>
>	glColor4f(1.0, 1.0, 1.0, 0.5);
>	glRasterPos2f((float)1.0, (float)0.0);
>	glDrawPixels(1, 1, GL_DEPTH_COMPONENT, GL_FLOAT, buf);
>
>	glutSwapBuffers();
>}
>
>int main(int argc, char **argv)
>{
>	glutInit(&argc, argv);
>	glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGBA | GLUT_DEPTH | GLUT_STENCIL);
>	glutInitWindowSize(WIN_WIDTH, WIN_HEIGHT);
>	glutCreateWindow("drawpix_depth_alpha");
>	glutDisplayFunc(display);
>
>	init();
>
>	glutMainLoop();
>
>	return 0;
>
>}

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Attachments on bug 23670: 29175 | 29352 | 29361 | 29580 | 30247 | 35832 | 35836

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