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

[mesa.git] / progs / glsl / array.c

diff --git a/progs/glsl/array.c b/progs/glsl/array.c
deleted file mode 100644 (file)
index 4ed1848..0000000
--- a/progs/glsl/array.c
+++ /dev/null
@@ -1,258 +0,0 @@
-/**
- * Test variable array indexing in a vertex shader.
- * Brian Paul
- * 17 April 2009
- */
-
-#include <assert.h>
-#include <string.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <math.h>
-#include <GL/glew.h>
-#include <GL/glut.h>
-#include "shaderutil.h"
-
-
-/**
- * The vertex position.z is used as a (variable) index into an
- * array which returns a new Z value.
- */
-static const char *VertShaderText =
-   "uniform sampler2D tex1; \n"
-   "uniform float HeightArray[20]; \n"
-   "void main() \n"
-   "{ \n"
-   "   vec4 pos = gl_Vertex; \n"
-   "   int i = int(pos.z * 9.5); \n"
-   "   pos.z = HeightArray[i]; \n"
-   "   gl_Position = gl_ModelViewProjectionMatrix * pos; \n"
-   "   gl_FrontColor = pos; \n"
-   "} \n";
-
-static const char *FragShaderText =
-   "void main() \n"
-   "{ \n"
-   "   gl_FragColor = gl_Color; \n"
-   "} \n";
-
-
-static GLuint fragShader;
-static GLuint vertShader;
-static GLuint program;
-
-static GLint win = 0;
-static GLboolean Anim = GL_TRUE;
-static GLboolean WireFrame = GL_TRUE;
-static GLfloat xRot = -70.0f, yRot = 0.0f, zRot = 0.0f;
-
-
-static void
-Idle(void)
-{
-   zRot = 90 + glutGet(GLUT_ELAPSED_TIME) * 0.05;
-   glutPostRedisplay();
-}
-
-
-/** z=f(x,y) */
-static float
-fz(float x, float y)
-{
-   return fabs(cos(1.5*x) + cos(1.5*y));
-}
-
-
-static void
-DrawMesh(void)
-{
-   GLfloat xmin = -2.0, xmax = 2.0;
-   GLfloat ymin = -2.0, ymax = 2.0;
-   GLuint xdivs = 20, ydivs = 20;
-   GLfloat dx = (xmax - xmin) / xdivs;
-   GLfloat dy = (ymax - ymin) / ydivs;
-   GLfloat ds = 1.0 / xdivs, dt = 1.0 / ydivs;
-   GLfloat x, y, s, t;
-   GLuint i, j;
-
-   y = ymin;
-   t = 0.0;
-   for (i = 0; i < ydivs; i++) {
-      x = xmin;
-      s = 0.0;
-      glBegin(GL_QUAD_STRIP);
-      for (j = 0; j < xdivs; j++) {
-         float z0 = fz(x, y), z1 = fz(x, y + dy);
-
-         glTexCoord2f(s, t);
-         glVertex3f(x, y, z0);
-
-         glTexCoord2f(s, t + dt);
-         glVertex3f(x, y + dy, z1);
-         x += dx;
-         s += ds;
-      }
-      glEnd();
-      y += dy;
-      t += dt;
-   }
-}
-
-
-static void
-Redisplay(void)
-{
-   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-   
-   if (WireFrame)
-      glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
-   else
-      glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
-
-   glPushMatrix();
-   glRotatef(xRot, 1.0f, 0.0f, 0.0f);
-   glRotatef(yRot, 0.0f, 1.0f, 0.0f);
-   glRotatef(zRot, 0.0f, 0.0f, 1.0f);
-
-   glPushMatrix();
-   DrawMesh();
-   glPopMatrix();
-
-   glPopMatrix();
-
-   glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
-
-   glutSwapBuffers();
-}
-
-
-static void
-Reshape(int width, int height)
-{
-   glViewport(0, 0, width, height);
-   glMatrixMode(GL_PROJECTION);
-   glLoadIdentity();
-   glFrustum(-1.0, 1.0, -1.0, 1.0, 5.0, 25.0);
-   glMatrixMode(GL_MODELVIEW);
-   glLoadIdentity();
-   glTranslatef(0.0f, 0.0f, -15.0f);
-}
-
-
-static void
-CleanUp(void)
-{
-   glDeleteShader(fragShader);
-   glDeleteShader(vertShader);
-   glDeleteProgram(program);
-   glutDestroyWindow(win);
-}
-
-
-static void
-Key(unsigned char key, int x, int y)
-{
-   const GLfloat step = 2.0;
-   (void) x;
-   (void) y;
-
-   switch(key) {
-   case 'a':
-      Anim = !Anim;
-      if (Anim)
-         glutIdleFunc(Idle);
-      else
-         glutIdleFunc(NULL);
-      break;
-   case 'w':
-      WireFrame = !WireFrame;
-      break;
-   case 'z':
-      zRot += step;
-      break;
-   case 'Z':
-      zRot -= step;
-      break;
-   case 27:
-      CleanUp();
-      exit(0);
-      break;
-   }
-   glutPostRedisplay();
-}
-
-
-static void
-SpecialKey(int key, int x, int y)
-{
-   const GLfloat step = 2.0;
-
-   (void) x;
-   (void) y;
-
-   switch(key) {
-   case GLUT_KEY_UP:
-      xRot += step;
-      break;
-   case GLUT_KEY_DOWN:
-      xRot -= step;
-      break;
-   case GLUT_KEY_LEFT:
-      yRot -= step;
-      break;
-   case GLUT_KEY_RIGHT:
-      yRot += step;
-      break;
-   }
-   glutPostRedisplay();
-}
-
-
-static void
-Init(void)
-{
-   GLfloat HeightArray[20];
-   GLint u, i;
-
-   if (!ShadersSupported())
-      exit(1);
-
-   vertShader = CompileShaderText(GL_VERTEX_SHADER, VertShaderText);
-   fragShader = CompileShaderText(GL_FRAGMENT_SHADER, FragShaderText);
-   program = LinkShaders(vertShader, fragShader);
-
-   glUseProgram(program);
-
-   /* Setup the HeightArray[] uniform */
-   for (i = 0; i < 20; i++)
-      HeightArray[i] = i / 20.0;
-   u = glGetUniformLocation(program, "HeightArray");
-   glUniform1fv(u, 20, HeightArray);
-
-   assert(glGetError() == 0);
-
-   glClearColor(0.4f, 0.4f, 0.8f, 0.0f);
-   glEnable(GL_DEPTH_TEST);
-   glColor3f(1, 1, 1);
-}
-
-
-int
-main(int argc, char *argv[])
-{
-   glutInit(&argc, argv);
-   glutInitWindowSize(500, 500);
-   glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
-   win = glutCreateWindow(argv[0]);
-   glewInit();
-   glutReshapeFunc(Reshape);
-   glutKeyboardFunc(Key);
-   glutSpecialFunc(SpecialKey);
-   glutDisplayFunc(Redisplay);
-   Init();
-   if (Anim)
-      glutIdleFunc(Idle);
-   glutMainLoop();
-   return 0;
-}
-