/* Test glGenProgramsNV(), glIsProgramNV(), glLoadProgramNV() */ #include <stdio.h> #include <assert.h> #include <string.h> #include <stdlib.h> #include <math.h> #include <GL/glew.h> #include <GL/glut.h> GLenum doubleBuffer; static void Init(void) { GLint errno; GLuint prognum; static const char *prog1 = "!!ARBvp1.0\n" "PARAM Emission = state.material.emission; \n" "PARAM Ambient = state.material.ambient; \n" "PARAM Diffuse = state.material.diffuse; \n" "PARAM Specular = state.material.specular; \n" "DP4 result.position.x, Ambient, vertex.position;\n" "DP4 result.position.y, Diffuse, vertex.position;\n" "DP4 result.position.z, Specular, vertex.position;\n" "DP4 result.position.w, Emission, vertex.position;\n" "MOV result.texcoord[0], vertex.texcoord[0];\n" "END\n"; const float Ambient[4] = { 0.0, 1.0, 0.0, 0.0 }; const float Diffuse[4] = { 1.0, 0.0, 0.0, 0.0 }; const float Specular[4] = { 0.0, 0.0, 1.0, 0.0 }; const float Emission[4] = { 0.0, 0.0, 0.0, 1.0 }; glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, Ambient); glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, Diffuse); glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, Specular); glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, Emission); glGenProgramsARB(1, &prognum); glBindProgramARB(GL_VERTEX_PROGRAM_ARB, prognum); glProgramStringARB(GL_VERTEX_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB, strlen(prog1), (const GLubyte *) prog1); assert(glIsProgramARB(prognum)); errno = glGetError(); printf("glGetError = %d\n", errno); if (errno != GL_NO_ERROR) { GLint errorpos; glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &errorpos); printf("errorpos: %d\n", errorpos); printf("%s\n", (char *)glGetString(GL_PROGRAM_ERROR_STRING_ARB)); } glEnable(GL_VERTEX_PROGRAM_NV); #define SIZE 32 { GLubyte tex2d[SIZE][SIZE][3]; GLint s, t; for (s = 0; s < SIZE; s++) { for (t = 0; t < SIZE; t++) { #if 0 tex2d[t][s][0] = (s < SIZE/2) ? 0 : 255; tex2d[t][s][1] = (t < SIZE/2) ? 0 : 255; tex2d[t][s][2] = 0; #else tex2d[t][s][0] = s*255/(SIZE-1); tex2d[t][s][1] = t*255/(SIZE-1); tex2d[t][s][2] = 0; #endif } } glPixelStorei(GL_UNPACK_ALIGNMENT, 1); glTexImage2D(GL_TEXTURE_2D, 0, 3, SIZE, SIZE, 0, GL_RGB, GL_UNSIGNED_BYTE, tex2d); glEnable(GL_TEXTURE_2D); glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_REPEAT); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); glPixelStorei(GL_UNPACK_ALIGNMENT, 4); } } static void Reshape(int width, int height) { glViewport(0, 0, (GLint)width, (GLint)height); glMatrixMode(GL_PROJECTION); glLoadIdentity(); /* glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0); */ glMatrixMode(GL_MODELVIEW); } static void Key(unsigned char key, int x, int y) { switch (key) { case 27: exit(1); default: break; } glutPostRedisplay(); } static void Draw(void) { glClear(GL_COLOR_BUFFER_BIT); glBegin(GL_TRIANGLES); glTexCoord2f(1,-1); glVertex3f( 0.9, -0.9, -0.0); glTexCoord2f(1,1); glVertex3f( 0.9, 0.9, -0.0); glTexCoord2f(-1,0); glVertex3f(-0.9, 0.0, -0.0); glEnd(); glFlush(); if (doubleBuffer) { glutSwapBuffers(); } } static GLenum Args(int argc, char **argv) { GLint i; doubleBuffer = GL_FALSE; for (i = 1; i < argc; i++) { if (strcmp(argv[i], "-sb") == 0) { doubleBuffer = GL_FALSE; } else if (strcmp(argv[i], "-db") == 0) { doubleBuffer = GL_TRUE; } else { fprintf(stderr, "%s (Bad option).\n", argv[i]); return GL_FALSE; } } return GL_TRUE; } int main(int argc, char **argv) { GLenum type; glutInit(&argc, argv); if (Args(argc, argv) == GL_FALSE) { exit(1); } glutInitWindowPosition(0, 0); glutInitWindowSize( 250, 250); type = GLUT_RGB | GLUT_ALPHA; type |= (doubleBuffer) ? GLUT_DOUBLE : GLUT_SINGLE; glutInitDisplayMode(type); if (glutCreateWindow(*argv) == GL_FALSE) { exit(1); } glewInit(); Init(); glutReshapeFunc(Reshape); glutKeyboardFunc(Key); glutDisplayFunc(Draw); glutMainLoop(); return 0; }