diff options
Diffstat (limited to 'progs/tests/vpwarpmesh.c')
-rw-r--r-- | progs/tests/vpwarpmesh.c | 237 |
1 files changed, 0 insertions, 237 deletions
diff --git a/progs/tests/vpwarpmesh.c b/progs/tests/vpwarpmesh.c deleted file mode 100644 index 80204ea136..0000000000 --- a/progs/tests/vpwarpmesh.c +++ /dev/null @@ -1,237 +0,0 @@ -/* - * Warp a triangle mesh with a vertex program. - */ - -#include <assert.h> -#include <string.h> -#include <stdio.h> -#include <stdlib.h> -#include <math.h> -#include <GL/glew.h> -#include <GL/glut.h> - -static float Xrot = -60.0, Yrot = 0.0, Zrot = 0.0; -static GLboolean Anim = GL_TRUE; -static GLfloat Phi = 0.0; - - -static void Idle( void ) -{ - Phi += 0.01; - glutPostRedisplay(); -} - - -static void DrawMesh( int rows, int cols ) -{ - static const GLfloat colorA[3] = { 0, 1, 0 }; - static const GLfloat colorB[3] = { 0, 0, 1 }; - const float dx = 2.0 / (cols - 1); - const float dy = 2.0 / (rows - 1); - float x, y; - int i, j; - -#if 1 -#define COLOR3FV(c) glVertexAttrib3fvNV(3, c) -#define VERTEX2F(x, y) glVertexAttrib2fNV(0, x, y) -#else -#define COLOR3FV(c) glColor3fv(c) -#define VERTEX2F(x, y) glVertex2f(x, y) -#endif - - y = -1.0; - for (i = 0; i < rows - 1; i++) { - glBegin(GL_QUAD_STRIP); - x = -1.0; - for (j = 0; j < cols; j++) { - if ((i + j) & 1) - COLOR3FV(colorA); - else - COLOR3FV(colorB); - VERTEX2F(x, y); - VERTEX2F(x, y + dy); - x += dx; - } - glEnd(); - y += dy; - } -} - - -static void Display( void ) -{ - glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ); - - glPushMatrix(); - glRotatef(Xrot, 1, 0, 0); - glRotatef(Yrot, 0, 1, 0); - glRotatef(Zrot, 0, 0, 1); - - /* Position the gravity source */ - { - GLfloat x, y, z, r = 0.5; - x = r * cos(Phi); - y = r * sin(Phi); - z = 1.0; - glProgramParameter4fNV(GL_VERTEX_PROGRAM_NV, 30, x, y, z, 1); - glDisable(GL_VERTEX_PROGRAM_NV); - glBegin(GL_POINTS); - glColor3f(1,1,1); - glVertex3f(x, y, z); - glEnd(); - } - - glEnable(GL_VERTEX_PROGRAM_NV); - DrawMesh(8, 8); - glPopMatrix(); - - glutSwapBuffers(); -} - - -static void Reshape( int width, int height ) -{ - float ar = (float) width / (float) height; - glViewport( 0, 0, width, height ); - glMatrixMode( GL_PROJECTION ); - glLoadIdentity(); - glFrustum( -1.0 * ar, 1.0 * ar, -1.0, 1.0, 5.0, 25.0 ); - glMatrixMode( GL_MODELVIEW ); - glLoadIdentity(); - glTranslatef( 0.0, 0.0, -12.0 ); - glScalef(2, 2, 2); -} - - -static void Key( unsigned char key, int x, int y ) -{ - (void) x; - (void) y; - switch (key) { - case 'a': - Anim = !Anim; - if (Anim) - glutIdleFunc(Idle); - else - glutIdleFunc(NULL); - break; - case 'p': - Phi += 0.2; - break; - case 'z': - Zrot -= 5.0; - break; - case 'Z': - Zrot += 5.0; - break; - case 27: - exit(0); - break; - } - glutPostRedisplay(); -} - - -static void SpecialKey( int key, int x, int y ) -{ - const GLfloat step = 3.0; - (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 ) -{ - /* - * c[0..3] = modelview matrix - * c[4..7] = inverse modelview matrix - * c[30] = gravity source location - * c[31] = gravity source strength - * c[32] = light pos - * c[35] = diffuse color - */ - static const char prog[] = - "!!VP1.0\n" - - "# Compute distance from vertex to gravity source\n" - "ADD R1, c[30], -v[OPOS]; # vector from vertex to gravity\n" - "DP3 R2, R1, R1; # dot product\n" - "RSQ R2, R2.x; # square root = distance\n" - "MUL R2, R2, c[31].xxxx; # scale by the gravity factor\n" - - "# Displace vertex by gravity factor along R1 vector\n" - "MAD R3, R1, R2, v[OPOS];\n" - - "# Continue with typical modelview/projection\n" - "DP4 o[HPOS].x, c[0], R3 ; # object x MVP -> clip\n" - "DP4 o[HPOS].y, c[1], R3 ;\n" - "DP4 o[HPOS].z, c[2], R3 ;\n" - "DP4 o[HPOS].w, c[3], R3 ;\n" - - "MOV o[COL0], v[COL0];\n # copy input color to output color\n" - - "END"; - - if (!glutExtensionSupported("GL_NV_vertex_program")) { - printf("Sorry, this program requires GL_NV_vertex_program\n"); - exit(1); - } - - glLoadProgramNV(GL_VERTEX_PROGRAM_NV, 1, - strlen(prog), (const GLubyte *) prog); - assert(glIsProgramNV(1)); - glBindProgramNV(GL_VERTEX_PROGRAM_NV, 1); - - /* Load the program registers */ - glTrackMatrixNV(GL_VERTEX_PROGRAM_NV, 0, GL_MODELVIEW_PROJECTION_NV, GL_IDENTITY_NV); - glTrackMatrixNV(GL_VERTEX_PROGRAM_NV, 4, GL_MODELVIEW, GL_INVERSE_TRANSPOSE_NV); - - /* Light position */ - glProgramParameter4fNV(GL_VERTEX_PROGRAM_NV, 32, 2, 2, 4, 1); - /* Diffuse material color */ - glProgramParameter4fNV(GL_VERTEX_PROGRAM_NV, 35, 0.25, 0, 0.25, 1); - - /* Gravity strength */ - glProgramParameter4fNV(GL_VERTEX_PROGRAM_NV, 31, .5, 0, 0, 0); - - glEnable(GL_DEPTH_TEST); - glClearColor(0.3, 0.3, 0.3, 1); - glShadeModel(GL_FLAT); - glPointSize(3); - printf("glGetError = %d\n", (int) glGetError()); -} - - -int main( int argc, char *argv[] ) -{ - glutInit( &argc, argv ); - glutInitWindowPosition( 0, 0 ); - glutInitWindowSize( 250, 250 ); - glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH ); - glutCreateWindow(argv[0]); - glewInit(); - glutReshapeFunc( Reshape ); - glutKeyboardFunc( Key ); - glutSpecialFunc( SpecialKey ); - glutDisplayFunc( Display ); - if (Anim) - glutIdleFunc(Idle); - Init(); - glutMainLoop(); - return 0; -} |