Remove demos that have moved to git+ssh://git.freedesktop.org/git/mesa/demos.

[mesa.git] / progs / tests / exactrast.c

diff --git a/progs/tests/exactrast.c b/progs/tests/exactrast.c
deleted file mode 100644 (file)
index 63b8336..0000000
--- a/progs/tests/exactrast.c
+++ /dev/null
@@ -1,202 +0,0 @@
-/**
- * Test for exact point/line/polygon rasterization, or at least rasterization
- * that fits the tolerance of the OpenGL spec.
- *
- * Brian Paul
- * 9 Nov 2007
- */
-
-/*
- * Notes:
- * - 'm' to cycle through point, hline, vline and quad drawing
- * - Use cursor keys to translate coordinates (z to reset)
- * - Resize window to check for proper rasterization
- * - Make sure your LCD is running in its native resolution
- *   
- * If translation is (0,0):
- *  a point will be drawn where x%2==0 and y%2==0,
- *  a horizontal line will be drawn where x%2==0,
- *  a vertical line will be drawn where y%2==0,
- *  for quads, pixels will be set where (x%4)!=3 and (y%4)!=3
- *
- * XXX todo: do glReadPixels and test that the results are what's expected.
- * Upon failure, iterate over sub-pixel translations to find the ideal offset.
- */
-
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <GL/glew.h>
-#include <GL/glut.h>
-
-static int Width = 400, Height = 400;
-static int Win;
-static float Xtrans = 0, Ytrans = 0;
-static float Step = 0.125;
-
-enum {
-   MODE_POINTS,
-   MODE_HLINES,
-   MODE_VLINES,
-   MODE_QUADS,
-   NUM_MODES
-};
-
-static int Mode = MODE_POINTS;
-
-
-static void
-Draw(void)
-{
-   /* See the OpenGL Programming Guide, Appendix H, "OpenGL Correctness Tips"
-    * for information about the 0.375 translation factor.
-    */
-   float tx = 0.375, ty = 0.375;
-   int i, j;
-
-   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
-   glPushMatrix();
-   glTranslatef(tx + Xtrans, ty + Ytrans, 0);
-
-   if (Mode == MODE_POINTS) {
-      glBegin(GL_POINTS);
-      for (j = 0; j < Height; j += 2) {
-         for (i = 0; i < Width; i += 2) {
-            glVertex2f(i, j);
-         }
-      }
-      glEnd();
-   }
-   else if (Mode == MODE_HLINES) {
-      glBegin(GL_LINES);
-      for (i = 0; i < Height; i += 2) {
-         glVertex2f(0,     i);
-         glVertex2f(Width, i);
-      }
-      glEnd();
-   }
-   else if (Mode == MODE_VLINES) {
-      glBegin(GL_LINES);
-      for (i = 0; i < Width; i += 2) {
-         glVertex2f(i, 0     );
-         glVertex2f(i, Height);
-      }
-      glEnd();
-   }
-   else if (Mode == MODE_QUADS) {
-      glBegin(GL_QUADS);
-      for (j = 0; j < Height; j += 4) {
-         for (i = 0; i < Width; i += 4) {
-            glVertex2f(i,     j    );
-            glVertex2f(i + 3, j    );
-            glVertex2f(i + 3, j + 3);
-            glVertex2f(i,     j + 3);
-         }
-      }
-      glEnd();
-   }
-
-   glPopMatrix();
-
-   glutSwapBuffers();
-}
-
-
-static void
-Reshape(int width, int height)
-{
-   Width = width;
-   Height = height;
-   glViewport(0, 0, width, height);
-   glMatrixMode(GL_PROJECTION);
-   glLoadIdentity();
-   glOrtho(0, width, 0, height, -1, 1);
-   glMatrixMode(GL_MODELVIEW);
-   glLoadIdentity();
-}
-
-
-static void
-Key(unsigned char key, int x, int y)
-{
-   (void) x;
-   (void) y;
-   switch (key) {
-   case 'm':
-   case 'M':
-      Mode = (Mode + 1) % NUM_MODES;
-      break;
-   case 'z':
-   case 'Z':
-      Xtrans = Ytrans = 0;
-      printf("Translation: %f, %f\n", Xtrans, Ytrans);
-      break;
-   case 27:
-      glutDestroyWindow(Win);
-      exit(0);
-      break;
-   }
-   glutPostRedisplay();
-}
-
-
-static void
-SpecialKey(int key, int x, int y)
-{
-   (void) x;
-   (void) y;
-   switch (key) {
-   case GLUT_KEY_UP:
-      Ytrans += Step;
-      break;
-   case GLUT_KEY_DOWN:
-      Ytrans -= Step;
-      break;
-   case GLUT_KEY_LEFT:
-      Xtrans -= Step;
-      break;
-   case GLUT_KEY_RIGHT:
-      Xtrans += Step;
-      break;
-   }
-   glutPostRedisplay();
-   printf("Translation: %f, %f\n", Xtrans, Ytrans);
-}
-
-
-static void
-Init(void)
-{
-}
-
-
-static void
-Usage(void)
-{
-   printf("Keys:\n");
-   printf("  up/down/left/right - translate by %f\n", Step);
-   printf("  z - reset translation to zero\n");
-   printf("  m - change rendering mode (points, hlines, vlines, quads)\n");
-   printf("  Esc - exit\n");
-}
-
-
-int
-main(int argc, char *argv[])
-{
-   glutInit(&argc, argv);
-   glutInitWindowPosition(0, 0);
-   glutInitWindowSize(Width, Height);
-   glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE);
-   Win = glutCreateWindow(argv[0]);
-   glewInit();
-   glutReshapeFunc(Reshape);
-   glutKeyboardFunc(Key);
-   glutSpecialFunc(SpecialKey);
-   glutDisplayFunc(Draw);
-   Init();
-   Usage();
-   glutMainLoop();
-   return 0;
-}