1 files changed, 0 insertions, 372 deletions
diff --git a/progs/glsl/texaaline.c b/progs/glsl/texaaline.c
deleted file mode 100644
index 00edab73108..00000000000
--- a/progs/glsl/texaaline.c
+++ /dev/null
@@ -1,372 +0,0 @@
-/**
- * AA lines with texture mapped quads
- *
- * Brian Paul
- * 9 Feb 2008
- */
-
-
-#include <assert.h>
-#include <string.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <math.h>
-#include <GL/glew.h>
-#include <GL/glut.h>
-
-#ifndef M_PI
-#define M_PI 3.1415926535
-#endif
-
-static GLint WinWidth = 300, WinHeight = 300;
-static GLint win = 0;
-static GLfloat Width = 8.;
-
-/*
- * Quad strip for line from v0 to v1:
- *
- 1   3                     5   7
- +---+---------------------+---+
- |                             |
- |   *v0                 v1*   |
- |                             |
- +---+---------------------+---+
- 0   2                     4   6
- */
-static void
-QuadLine(const GLfloat *v0, const GLfloat *v1, GLfloat width)
-{
-   GLfloat dx = v1[0] - v0[0];
-   GLfloat dy = v1[1] - v0[1];
-   GLfloat len = sqrt(dx*dx + dy*dy);
-   float dx0, dx1, dx2, dx3, dx4, dx5, dx6, dx7;
-   float dy0, dy1, dy2, dy3, dy4, dy5, dy6, dy7;
-
-   dx /= len;
-   dy /= len;
-
-   width *= 0.5;  /* half width */
-   dx = dx * (width + 0.0);
-   dy = dy * (width + 0.0);
-
-   dx0 = -dx+dy;  dy0 = -dy-dx;
-   dx1 = -dx-dy;  dy1 = -dy+dx;
-
-   dx2 =   0+dy;  dy2 = -dx+0;
-   dx3 =   0-dy;  dy3 = +dx+0;
-
-   dx4 =   0+dy;  dy4 = -dx+0;
-   dx5 =   0-dy;  dy5 = +dx+0;
-
-   dx6 =  dx+dy;  dy6 =  dy-dx;
-   dx7 =  dx-dy;  dy7 =  dy+dx;
-
-   /*
-   printf("dx, dy = %g, %g\n", dx, dy);
-   printf("  dx0, dy0: %g, %g\n", dx0, dy0);
-   printf("  dx1, dy1: %g, %g\n", dx1, dy1);
-   printf("  dx2, dy2: %g, %g\n", dx2, dy2);
-   printf("  dx3, dy3: %g, %g\n", dx3, dy3);
-   */
-
-   glBegin(GL_QUAD_STRIP);
-   glTexCoord2f(0, 0);
-   glVertex2f(v0[0] + dx0, v0[1] + dy0);
-   glTexCoord2f(0, 1);
-   glVertex2f(v0[0] + dx1, v0[1] + dy1);
-
-   glTexCoord2f(0.5, 0);
-   glVertex2f(v0[0] + dx2, v0[1] + dy2);
-   glTexCoord2f(0.5, 1);
-   glVertex2f(v0[0] + dx3, v0[1] + dy3);
-
-   glTexCoord2f(0.5, 0);
-   glVertex2f(v1[0] + dx2, v1[1] + dy2);
-   glTexCoord2f(0.5, 1);
-   glVertex2f(v1[0] + dx3, v1[1] + dy3);
-
-   glTexCoord2f(1, 0);
-   glVertex2f(v1[0] + dx6, v1[1] + dy6);
-   glTexCoord2f(1, 1);
-   glVertex2f(v1[0] + dx7, v1[1] + dy7);
-   glEnd();
-}
-
-
-static float Cos(float a)
-{
-   return cos(a * M_PI / 180.);
-}
-
-static float Sin(float a)
-{
-   return sin(a * M_PI / 180.);
-}
-
-static void
-Redisplay(void)
-{
-   float cx = 0.5 * WinWidth, cy = 0.5 * WinHeight;
-   float len = 0.5 * WinWidth - 20.0;
-   int i;
-
-   glClear(GL_COLOR_BUFFER_BIT);
-
-   glColor3f(1, 1, 1);
-
-   glEnable(GL_BLEND);
-   glEnable(GL_TEXTURE_2D);
-
-   for (i = 0; i < 360; i+=5) {
-      float v0[2], v1[2];
-      v0[0] = cx + 40 * Cos(i);
-      v0[1] = cy + 40 * Sin(i);
-      v1[0] = cx + len * Cos(i);
-      v1[1] = cy + len * Sin(i);
-      QuadLine(v0, v1, Width);
-   }
-
-   {
-      float v0[2], v1[2], x;
-      for (x = 0; x < 1.0; x += 0.2) {
-         v0[0] = cx + x;
-         v0[1] = cy + x * 40 - 20;
-         v1[0] = cx + x + 5.0;
-         v1[1] = cy + x * 40 - 20;
-         QuadLine(v0, v1, Width);
-      }
-   }
-
-   glDisable(GL_BLEND);
-   glDisable(GL_TEXTURE_2D);
-
-   glutSwapBuffers();
-}
-
-
-static void
-Reshape(int width, int height)
-{
-   WinWidth = width;
-   WinHeight = height;
-   glViewport(0, 0, width, height);
-   glMatrixMode(GL_PROJECTION);
-   glLoadIdentity();
-   glOrtho(0, width, 0, height, -1, 1);
-   glMatrixMode(GL_MODELVIEW);
-   glLoadIdentity();
-}
-
-
-static void
-CleanUp(void)
-{
-   glutDestroyWindow(win);
-}
-
-
-static void
-Key(unsigned char key, int x, int y)
-{
-  (void) x;
-  (void) y;
-
-   switch(key) {
-   case 'w':
-      Width -= 0.5;
-      break;
-   case 'W':
-      Width += 0.5;
-      break;
-   case 27:
-      CleanUp();
-      exit(0);
-      break;
-   }
-#if 0
-   if (Width < 3)
-      Width = 3;
-#endif
-   printf("Width = %g\n", Width);
-   glutPostRedisplay();
-}
-
-
-static float
-ramp4(GLint i, GLint size)
-{
-   float d;
-   if (i < 4 ) {
-      d = i / 4.0;
-   }
-   else if (i >= size - 5) {
-      d = 1.0 - (i - (size - 5)) / 4.0;
-   }
-   else {
-      d = 1.0;
-   }
-   return d;
-}
-
-static float
-ramp2(GLint i, GLint size)
-{
-   float d;
-   if (i < 2 ) {
-      d = i / 2.0;
-   }
-   else if (i >= size - 3) {
-      d = 1.0 - (i - (size - 3)) / 2.0;
-   }
-   else {
-      d = 1.0;
-   }
-   return d;
-}
-
-static float
-ramp1(GLint i, GLint size)
-{
-   float d;
-   if (i == 0 || i == size-1) {
-      d = 0.0;
-   }
-   else {
-      d = 1.0;
-   }
-   return d;
-}
-
-
-/**
- * Make an alpha texture for antialiasing lines.
- * Just a linear fall-off ramp for now.
- * Should have a number of different textures for different line widths.
- * Could try a bell-like-curve....
- */
-static void
-MakeTexture(void)
-{
-#define SZ 8
-   GLfloat tex[SZ][SZ];  /* alpha tex */
-   int i, j;
-   for (i = 0; i < SZ; i++) {
-      for (j = 0; j < SZ; j++) {
-#if 0
-         float k = (SZ-1) / 2.0;
-         float dx = fabs(i - k) / k;
-         float dy = fabs(j - k) / k;
-         float d;
-
-         dx = 1.0 - dx;
-         dy = 1.0 - dy;
-         d = dx * dy;
-
-#else
-         float d = ramp1(i, SZ) * ramp1(j, SZ);
-         printf("%d, %d: %g\n", i, j, d);
-#endif
-         tex[i][j] = d;
-      }
-   }
-
-   glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, SZ, SZ, 0, GL_ALPHA, GL_FLOAT, tex);
-   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-   glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
-#undef SZ
-}
-
-
-static void
-MakeMipmap(void)
-{
-#define SZ 64
-   GLfloat tex[SZ][SZ];  /* alpha tex */
-   int level;
-
-   glPixelStorei(GL_UNPACK_ROW_LENGTH, SZ);
-   for (level = 0; level < 7; level++) {
-      int sz = 1 << (6 - level);
-      int i, j;
-      for (i = 0; i < sz; i++) {
-         for (j = 0; j < sz; j++) {
-            if (level == 6)
-               tex[i][j] = 1.0;
-            else if (level == 5)
-               tex[i][j] = 0.5;
-            else
-               tex[i][j] = ramp1(i, sz) * ramp1(j, sz);
-         }
-      }
-
-      glTexImage2D(GL_TEXTURE_2D, level, GL_ALPHA,
-                   sz, sz, 0, GL_ALPHA, GL_FLOAT, tex);
-   }
-
-   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
-   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-   /* glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LOD, 4); */
-   /* glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 5); */
-
-   glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
-#undef SZ
-}
-
-
-static void
-Init(void)
-{
-   const char *version;
-
-   (void) MakeTexture;
-   (void) ramp4;
-   (void) ramp2;
-
-   version = (const char *) glGetString(GL_VERSION);
-   if (version[0] != '2' || version[1] != '.') {
-      printf("This program requires OpenGL 2.x, found %s\n", version);
-      exit(1);
-   }
-
-   glClearColor(0.3f, 0.3f, 0.3f, 0.0f);
-
-   printf("GL_RENDERER = %s\n",(const char *) glGetString(GL_RENDERER));
-
-   glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-#if 0
-   glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
-#elif 0
-   MakeTexture();
-#else
-   MakeMipmap();
-#endif
-}
-
-
-static void
-ParseOptions(int argc, char *argv[])
-{
-}
-
-
-int
-main(int argc, char *argv[])
-{
-   glutInit(&argc, argv);
-   glutInitWindowSize(WinWidth, WinHeight);
-   glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE);
-   win = glutCreateWindow(argv[0]);
-   glewInit();
-   glutReshapeFunc(Reshape);
-   glutKeyboardFunc(Key);
-   glutDisplayFunc(Redisplay);
-   ParseOptions(argc, argv);
-   Init();
-   glutMainLoop();
-   return 0;
-}