diff options
Diffstat (limited to 'progs/tests/vparray.c')
-rw-r--r-- | progs/tests/vparray.c | 297 |
1 files changed, 0 insertions, 297 deletions
diff --git a/progs/tests/vparray.c b/progs/tests/vparray.c deleted file mode 100644 index 75160afd463..00000000000 --- a/progs/tests/vparray.c +++ /dev/null @@ -1,297 +0,0 @@ -/* - * Test vertex arrays with GL_NV_vertex_program - * - * Based on a stripped-down version of the isosurf demo. - * The vertex program is trivial: compute the resulting - * RGB color as a linear function of vertex XYZ. - */ - -#include <assert.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <math.h> -#include "GL/glew.h" -#include "GL/glut.h" - -#define MAXVERTS 10000 -static float data[MAXVERTS][6]; -static GLint numverts; - -static GLfloat xrot; -static GLfloat yrot; -static GLboolean useArrays = GL_TRUE; -static GLboolean useProgram = GL_TRUE; -static GLboolean useList = GL_FALSE; - - -static void read_surface( char *filename ) -{ - FILE *f; - - f = fopen(filename,"r"); - if (!f) { - printf("couldn't read %s\n", filename); - exit(1); - } - - numverts = 0; - while (numverts < MAXVERTS) { - int result; - result = fscanf( f, "%f %f %f %f %f %f", - &data[numverts][0], &data[numverts][1], &data[numverts][2], - &data[numverts][3], &data[numverts][4], &data[numverts][5] ); - if (result == EOF) { - break; - } - numverts++; - } - - printf("%d vertices, %d triangles\n", numverts, numverts-2); - printf("data = %p\n", (void *) data); - fclose(f); -} - - - - -static void Display(void) -{ - if (useProgram) - glEnable(GL_VERTEX_PROGRAM_NV); - else - glDisable(GL_VERTEX_PROGRAM_NV); - - glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ); - - glPushMatrix(); - glRotatef(xrot, 1, 0, 0); - glRotatef(yrot, 0, 1, 0); - glScalef(2, 2, 2); - if (useArrays) { - if (useProgram) { - glVertexAttribPointerNV( 0, 3, GL_FLOAT, 6 * sizeof(GLfloat), data ); - glEnableClientState( GL_VERTEX_ATTRIB_ARRAY0_NV ); - glVertexAttribPointerNV( 2, 3, GL_FLOAT, 6 * sizeof(GLfloat), ((GLfloat *) data) + 3); - glEnableClientState( GL_VERTEX_ATTRIB_ARRAY2_NV); - } - else { - glVertexPointer( 3, GL_FLOAT, 6 * sizeof(GLfloat), data ); - glEnableClientState( GL_VERTEX_ARRAY ); - glNormalPointer( GL_FLOAT, 6 * sizeof(GLfloat), ((GLfloat *) data) + 3); - glEnableClientState( GL_NORMAL_ARRAY ); - } - - if (useList) { - /* dumb, but a good test */ - glNewList(1,GL_COMPILE); - glDrawArrays(GL_TRIANGLE_STRIP, 0, numverts); - glEndList(); - glCallList(1); - } - else { - glDrawArrays(GL_TRIANGLE_STRIP, 0, numverts); - } - - glDisableClientState( GL_VERTEX_ATTRIB_ARRAY0_NV ); - glDisableClientState( GL_VERTEX_ATTRIB_ARRAY2_NV); - glDisableClientState( GL_VERTEX_ARRAY ); - glDisableClientState( GL_NORMAL_ARRAY ); - } - else { - int i; - glBegin(GL_TRIANGLE_STRIP); - for (i = 0; i < numverts; i++) { - glNormal3fv( data[i] + 3 ); - glVertex3fv( data[i] + 0 ); - } - glEnd(); - } - glPopMatrix(); - - if (glGetError()) - printf("Error!\n"); - - glutSwapBuffers(); -} - - -static void InitMaterials(void) -{ - static float ambient[] = {0.1, 0.1, 0.1, 1.0}; - static float diffuse[] = {0.5, 1.0, 1.0, 1.0}; - static float position0[] = {0.0, 0.0, 20.0, 0.0}; - static float position1[] = {0.0, 0.0, -20.0, 0.0}; - static float front_mat_shininess[] = {60.0}; - static float front_mat_specular[] = {0.2, 0.2, 0.2, 1.0}; - static float front_mat_diffuse[] = {0.5, 0.28, 0.38, 1.0}; - /* - static float back_mat_shininess[] = {60.0}; - static float back_mat_specular[] = {0.5, 0.5, 0.2, 1.0}; - static float back_mat_diffuse[] = {1.0, 1.0, 0.2, 1.0}; - */ - static float lmodel_ambient[] = {1.0, 1.0, 1.0, 1.0}; - static float lmodel_twoside[] = {GL_FALSE}; - - glLightfv(GL_LIGHT0, GL_AMBIENT, ambient); - glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuse); - glLightfv(GL_LIGHT0, GL_POSITION, position0); - glEnable(GL_LIGHT0); - - glLightfv(GL_LIGHT1, GL_AMBIENT, ambient); - glLightfv(GL_LIGHT1, GL_DIFFUSE, diffuse); - glLightfv(GL_LIGHT1, GL_POSITION, position1); - glEnable(GL_LIGHT1); - - glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient); - glLightModelfv(GL_LIGHT_MODEL_TWO_SIDE, lmodel_twoside); - - glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, front_mat_shininess); - glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, front_mat_specular); - glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, front_mat_diffuse); - glEnable(GL_LIGHTING); -} - - -static void init_program(void) -{ - /* - * c[0..3] = modelview matrix - * c[4..7] = inverse modelview matrix - * c[30] = color scale - * c[31] = color bias - */ - static const char prog[] = - "!!VP1.0\n" - - "# RGB is proportional to XYZ \n" - - "MUL R0, v[OPOS], c[30]; \n" - "ADD o[COL0], R0, c[31]; \n" - - "# Continue with typical modelview/projection\n" - "MOV R3, v[OPOS]; \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" - - "END"; - - static const GLfloat scale[4] = {2.0, 2.0, 2.0, 0.0}; - static const GLfloat bias[4] = {1.0, 1.0, 1.0, 0.0}; - - 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); - - glProgramParameter4fvNV(GL_VERTEX_PROGRAM_NV, 30, scale); - glProgramParameter4fvNV(GL_VERTEX_PROGRAM_NV, 31, bias); -} - - -static void init(void) -{ - xrot = 0; - yrot = 0; - glClearColor(0.0, 0.0, 1.0, 0.0); - glEnable( GL_DEPTH_TEST ); - glEnable(GL_NORMALIZE); - InitMaterials(); - read_surface( "../demos/isosurf.dat" ); - init_program(); -} - - -static void Reshape(int width, int height) -{ - glViewport(0, 0, (GLint)width, (GLint)height); - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - glFrustum( -1.0, 1.0, -1.0, 1.0, 5, 25 ); - glMatrixMode(GL_MODELVIEW); - glLoadIdentity(); - glTranslatef(0, 0, -15); -} - - - -static void Key( unsigned char key, int x, int y ) -{ - (void) x; - (void) y; - switch (key) { - case 27: - exit(0); - case 'a': - useArrays = !useArrays; - printf("use arrays: %s\n", useArrays ? "yes" : "no"); - break; - case 'l': - useList = !useList; - printf("use list: %s\n", useList ? "yes" : "no"); - break; - case 'p': - useProgram = !useProgram; - printf("use program: %s\n", useProgram ? "yes" : "no"); - break; - } - glutPostRedisplay(); -} - - -static void SpecialKey( int key, int x, int y ) -{ - (void) x; - (void) y; - switch (key) { - case GLUT_KEY_LEFT: - yrot -= 15.0; - break; - case GLUT_KEY_RIGHT: - yrot += 15.0; - break; - case GLUT_KEY_UP: - xrot += 15.0; - break; - case GLUT_KEY_DOWN: - xrot -= 15.0; - break; - default: - return; - } - glutPostRedisplay(); -} - - - -int main(int argc, char **argv) -{ - glutInit(&argc, argv); - glutInitDisplayMode( GLUT_DEPTH | GLUT_RGB | GLUT_DOUBLE ); - glutInitWindowPosition(0, 0); - glutInitWindowSize(400, 400); - if (glutCreateWindow("Isosurface") <= 0) { - exit(0); - } - glewInit(); - glutReshapeFunc(Reshape); - glutKeyboardFunc(Key); - glutSpecialFunc(SpecialKey); - glutDisplayFunc(Display); - - init(); - - glutMainLoop(); - return 0; -} |