159 lines
3.8 KiB
C
159 lines
3.8 KiB
C
/* Test vertex state program execution */
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#include <assert.h>
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#include <GL/glew.h>
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#include <GL/glut.h>
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static void Display( void )
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{
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glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
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glPushMatrix();
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glutSolidCube(2.0);
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glPopMatrix();
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glutSwapBuffers();
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}
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static void Reshape( int width, int height )
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{
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glViewport( 0, 0, width, height );
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glMatrixMode( GL_PROJECTION );
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glLoadIdentity();
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glFrustum( -1.0, 1.0, -1.0, 1.0, 5.0, 25.0 );
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glMatrixMode( GL_MODELVIEW );
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glLoadIdentity();
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glTranslatef( 0.0, 0.0, -15.0 );
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}
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static void Key( unsigned char key, int x, int y )
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{
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(void) x;
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(void) y;
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switch (key) {
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case 27:
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exit(0);
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break;
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}
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glutPostRedisplay();
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}
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static void Test1( void )
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{
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static const GLfloat p[4] = {9, 8, 7, 6};
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GLfloat q[4];
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/* test addition */
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static const char *prog =
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"!!VSP1.0\n"
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"MOV R0, c[0];\n"
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"MOV R1, c[1];\n"
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"ADD c[2], R0, R1;\n"
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"END\n";
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glLoadProgramNV(GL_VERTEX_STATE_PROGRAM_NV, 1,
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strlen(prog),
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(const GLubyte *) prog);
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assert(glIsProgramNV(1));
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glProgramParameter4fNV(GL_VERTEX_PROGRAM_NV, 0, 1, 2, 3, 4);
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glProgramParameter4fNV(GL_VERTEX_PROGRAM_NV, 1, 10, 20, 30, 40);
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glExecuteProgramNV(GL_VERTEX_STATE_PROGRAM_NV, 1, p);
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glGetProgramParameterfvNV(GL_VERTEX_PROGRAM_NV, 2, GL_PROGRAM_PARAMETER_NV, q);
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printf("Result c[2] = %g %g %g %g (should be 11 22 33 44)\n",
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q[0], q[1], q[2], q[3]);
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}
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static void Test2( void )
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{
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static const GLfloat p[4] = {9, 8, 7, 6};
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GLfloat q[4];
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/* test swizzling */
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static const char *prog =
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"!!VSP1.0\n"
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"MOV R0, c[0].wzyx;\n"
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"MOV R1, c[1].wzyx;\n"
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"ADD c[2], R0, R1;\n"
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"END\n";
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glLoadProgramNV(GL_VERTEX_STATE_PROGRAM_NV, 1,
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strlen(prog),
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(const GLubyte *) prog);
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assert(glIsProgramNV(1));
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glProgramParameter4fNV(GL_VERTEX_PROGRAM_NV, 0, 1, 2, 3, 4);
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glProgramParameter4fNV(GL_VERTEX_PROGRAM_NV, 1, 10, 20, 30, 40);
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glExecuteProgramNV(GL_VERTEX_STATE_PROGRAM_NV, 1, p);
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glGetProgramParameterfvNV(GL_VERTEX_PROGRAM_NV, 2, GL_PROGRAM_PARAMETER_NV, q);
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printf("Result c[2] = %g %g %g %g (should be 44 33 22 11)\n",
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q[0], q[1], q[2], q[3]);
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}
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static void Test3( void )
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{
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static const GLfloat p[4] = {0, 0, 0, 0};
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GLfloat q[4];
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/* normalize vector */
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static const char *prog =
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"!!VSP1.0\n"
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"# c[0] = (nx,ny,nz)\n"
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"# R0.xyz = normalize(R1)\n"
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"# R0.w = 1/sqrt(nx*nx + ny*ny + nz*nz)\n"
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"# c[2] = R0\n"
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"DP3 R0.w, c[0], c[0];\n"
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"RSQ R0.w, R0.w;\n"
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"MUL R0.xyz, c[0], R0.w;\n"
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"MOV c[2], R0;\n"
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"END\n";
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glLoadProgramNV(GL_VERTEX_STATE_PROGRAM_NV, 1,
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strlen(prog),
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(const GLubyte *) prog);
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assert(glIsProgramNV(1));
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glProgramParameter4fNV(GL_VERTEX_PROGRAM_NV, 0, 0, 10, 0, 0);
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glExecuteProgramNV(GL_VERTEX_STATE_PROGRAM_NV, 1, p);
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glGetProgramParameterfvNV(GL_VERTEX_PROGRAM_NV, 2, GL_PROGRAM_PARAMETER_NV, q);
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printf("Result c[2] = %g %g %g %g (should be 0, 1, 0, 0.1)\n",
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q[0], q[1], q[2], q[3]);
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}
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int main( int argc, char *argv[] )
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{
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glutInit( &argc, argv );
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glutInitWindowPosition( 0, 0 );
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glutInitWindowSize( 50, 50 );
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glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH );
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glutCreateWindow(argv[0]);
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glewInit();
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glutReshapeFunc( Reshape );
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glutKeyboardFunc( Key );
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glutDisplayFunc( Display );
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if (!glutExtensionSupported("GL_NV_vertex_program")) {
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printf("Sorry, this program requires GL_NV_vertex_program\n");
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exit(1);
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}
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Test1();
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Test2();
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Test3();
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glutMainLoop();
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return 0;
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}
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