--- /dev/null
+/*
+ * Copyright (c) 1991, 1992, 1993 Silicon Graphics, Inc.
+ * Copyright (c) 2009 VMware, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the name of
+ * Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF
+ * ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <GL/glut.h>
+
+struct program
+{
+ unsigned width;
+ unsigned height;
+ int i;
+};
+
+struct program prog;
+
+static void init(void)
+{
+ fprintf(stderr, "GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
+ fprintf(stderr, "GL_VERSION = %s\n", (char *) glGetString(GL_VERSION));
+ fprintf(stderr, "GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR));
+ fflush(stderr);
+
+ prog.i = 0;
+}
+
+static void reshape(int width, int height)
+{
+ glViewport(0, 0, 100, 100);
+
+ prog.width = width;
+ prog.height = height;
+
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0);
+ glMatrixMode(GL_MODELVIEW);
+}
+
+static void key(unsigned char key, int x, int y)
+{
+
+ switch (key) {
+ case 27:
+ exit(1);
+ default:
+ glutPostRedisplay();
+ return;
+ }
+}
+
+static void drawQuad(void)
+{
+ glBegin(GL_QUADS);
+ glVertex2d(-1.0, -1.0);
+ glVertex2d( 1.0, -1.0);
+ glVertex2d( 1.0, 1.0);
+ glVertex2d(-1.0, 1.0);
+ glEnd();
+}
+
+static void draw(void)
+{
+ int i;
+
+ glClearColor(0.0, 0.0, 1.0, 0.0);
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ i = prog.i++;
+ if (prog.i >= 3)
+ prog.i = 0;
+
+ glEnable(GL_SCISSOR_TEST);
+
+ {
+ glColor4d(1.0, 0.0, 0.0, 1.0);
+
+ glScissor(i, i, 10 - 2*i, 10 - 2*i);
+ drawQuad();
+ }
+
+ glDisable(GL_SCISSOR_TEST);
+
+ //glutSwapBuffers();
+ glFlush();
+}
+
+int main(int argc, char **argv)
+{
+ GLenum type;
+
+ glutInit(&argc, argv);
+
+ prog.width = 200;
+ prog.height = 200;
+
+ glutInitWindowPosition(100, 0);
+ glutInitWindowSize(prog.width, prog.height);
+
+ //type = GLUT_RGB | GLUT_DOUBLE;
+ type = GLUT_RGB | GLUT_SINGLE;
+ glutInitDisplayMode(type);
+
+ if (glutCreateWindow(*argv) == GL_FALSE) {
+ exit(1);
+ }
+
+ init();
+
+ glutReshapeFunc(reshape);
+ glutKeyboardFunc(key);
+ glutDisplayFunc(draw);
+ glutMainLoop();
+ return 0;
+}
--- /dev/null
+/*
+ * Copyright (c) 1991, 1992, 1993 Silicon Graphics, Inc.
+ * Copyright (c) 2009 VMware, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the name of
+ * Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF
+ * ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <GL/glut.h>
+
+struct program
+{
+ unsigned width;
+ unsigned height;
+ unsigned quads;
+};
+
+struct program prog;
+
+static void init(void)
+{
+ fprintf(stderr, "GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
+ fprintf(stderr, "GL_VERSION = %s\n", (char *) glGetString(GL_VERSION));
+ fprintf(stderr, "GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR));
+ fflush(stderr);
+}
+
+static void reshape(int width, int height)
+{
+
+ glViewport(0, 0, (GLint)width, (GLint)height);
+
+ prog.width = width;
+ prog.height = height;
+
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0);
+ glMatrixMode(GL_MODELVIEW);
+}
+
+static void key(unsigned char key, int x, int y)
+{
+
+ switch (key) {
+ case 27:
+ exit(1);
+ default:
+ prog.quads = !prog.quads;
+ glutPostRedisplay();
+ return;
+ }
+}
+
+static void drawQuad(void)
+{
+
+ if (prog.quads) {
+ glBegin(GL_QUADS);
+ glVertex2d(-1.0, -1.0);
+ glVertex2d( 1.0, -1.0);
+ glVertex2d( 1.0, 1.0);
+ glVertex2d(-1.0, 1.0);
+ glEnd();
+ } else {
+ glClear(GL_COLOR_BUFFER_BIT);
+ }
+}
+
+static void draw(void)
+{
+ glClearColor(0.0, 0.0, 1.0, 0.0);
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ printf("drawing with %s\n", prog.quads ? "quads" : "clears");
+
+ glEnable(GL_SCISSOR_TEST);
+
+ {
+ glClearColor(1.0, 0.0, 0.0, 1.0);
+ glColor4d(1.0, 0.0, 0.0, 1.0);
+
+ glScissor(1, 1, 10, 10);
+ drawQuad();
+ glScissor(1, prog.height - 11, 10, 10);
+ drawQuad();
+ glScissor(prog.width - 11, prog.height - 11, 10, 10);
+ drawQuad();
+ }
+
+ {
+ glClearColor(0.0, 1.0, 0.0, 1.0);
+ glColor4d(0.0, 1.0, 0.0, 1.0);
+
+ glScissor(12, 1, 10, 10);
+ drawQuad();
+ glScissor(12, prog.height - 11, 10, 10);
+ drawQuad();
+ glScissor(prog.width - 22, prog.height - 11, 10, 10);
+ drawQuad();
+ }
+
+ {
+ glClearColor(1.0, 1.0, 0.0, 1.0);
+ glColor4d(1.0, 1.0, 0.0, 1.0);
+
+ glScissor(1, 12, 10, 10);
+ drawQuad();
+ glScissor(1, prog.height - 22, 10, 10);
+ drawQuad();
+ glScissor(prog.width - 11, prog.height - 22, 10, 10);
+ drawQuad();
+ }
+
+ glDisable(GL_SCISSOR_TEST);
+
+ //glutSwapBuffers();
+ glFlush();
+}
+
+int main(int argc, char **argv)
+{
+ GLenum type;
+
+ glutInit(&argc, argv);
+
+ prog.width = 200;
+ prog.height = 200;
+
+ glutInitWindowPosition(100, 0);
+ glutInitWindowSize(prog.width, prog.height);
+
+ //type = GLUT_RGB | GLUT_DOUBLE;
+ type = GLUT_RGB | GLUT_SINGLE;
+ glutInitDisplayMode(type);
+
+ if (glutCreateWindow(*argv) == GL_FALSE) {
+ exit(1);
+ }
+
+ init();
+
+ glutReshapeFunc(reshape);
+ glutKeyboardFunc(key);
+ glutDisplayFunc(draw);
+ glutMainLoop();
+ return 0;
+}
projects / mesa.git / commitdiff