diff options
Diffstat (limited to 'lighthouse3dglex.c')
| -rw-r--r-- | lighthouse3dglex.c | 221 |
1 files changed, 0 insertions, 221 deletions
diff --git a/lighthouse3dglex.c b/lighthouse3dglex.c deleted file mode 100644 index 08cff1a..0000000 --- a/lighthouse3dglex.c +++ /dev/null @@ -1,221 +0,0 @@ - -/* - Simple Demo for GLSL - www.lighthouse3d.com - - tweaked a bit by andy -*/ - -#include "GL/glew.h" - -#ifdef __linux__ -#include <GL/glut.h> -#endif - -#ifdef __APPLE__ -#include <glut.h> -#endif - -#ifdef _WIN32 -#include "glut.h" -#endif - -#include <stdio.h> -#include <string.h> -#include <stdlib.h> - -/////////////////////////////////////////////////////////////////////// - -char *textFileRead(char *fn) -{ - FILE *fp; - char *content = NULL; - - int count=0; - - if (fn != NULL) { - fp = fopen(fn,"rt"); - - if (fp != NULL) { - - fseek(fp, 0, SEEK_END); - count = ftell(fp); - rewind(fp); - - if (count > 0) { - content = (char *)malloc(sizeof(char) * (count+1)); - count = fread(content,sizeof(char),count,fp); - content[count] = '\0'; - } - fclose(fp); - } - } - - if (content == NULL) - { - fprintf(stderr, "ERROR: could not load in file %s\n", fn); - exit(1); - } - return content; -} - -/////////////////////////////////////////////////////////////////////// - -int textFileWrite(char *fn, char *s) -{ - FILE *fp; - int status = 0; - - if (fn != NULL) { - fp = fopen(fn,"w"); - - if (fp != NULL) { - - if (fwrite(s,sizeof(char),strlen(s),fp) == strlen(s)) - status = 1; - fclose(fp); - } - } - return(status); -} - -/////////////////////////////////////////////////////////////////////// - -GLuint v,f,p; -float lpos[4] = {1.0, 0.5, 1.0, 0.0}; - -/////////////////////////////////////////////////////////////////////// - -void changeSize(int w, int h) -{ - // Prevent a divide by zero, when window is too short - // (you cant make a window of zero width). - if(h == 0) - h = 1; - - float ratio = 1.0* w / h; - - // Reset the coordinate system before modifying - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - - // Set the viewport to be the entire window - glViewport(0, 0, w, h); - - // Set the correct perspective. - gluPerspective(45, ratio, 1, 1000); - glMatrixMode(GL_MODELVIEW); -} - -/////////////////////////////////////////////////////////////////////// - -void renderScene(void) -{ - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - - glLoadIdentity(); - gluLookAt(0.0,0.0,5.0, - 0.0,0.0,-1.0, - 0.0f,1.0f,0.0f); - - glLightfv(GL_LIGHT0, GL_POSITION, lpos); - glutSolidTeapot(1); - - glutSwapBuffers(); -} - -/////////////////////////////////////////////////////////////////////// - -void processNormalKeys(unsigned char key, int x, int y) { - - if (key == 27) - exit(0); -} - -/////////////////////////////////////////////////////////////////////// - -void setShaders() -{ - char *vs,*fs; - - v = glCreateShader(GL_VERTEX_SHADER); - f = glCreateShader(GL_FRAGMENT_SHADER); - - // older syntax - //v = glCreateShaderObjectARB(GL_VERTEX_SHADER_ARB); - //f = glCreateShaderObjectARB(GL_FRAGMENT_SHADER_ARB); - - vs = textFileRead("./toon.vert"); - fs = textFileRead("./toon.frag"); - - const char * ff = fs; - const char * vv = vs; - - glShaderSource(v, 1, &vv,NULL); - glShaderSource(f, 1, &ff,NULL); - - // older syntax - //glShaderSourceARB(v, 1, &vv,NULL); - //glShaderSourceARB(f, 1, &ff,NULL); - - free(vs);free(fs); - - glCompileShader(v); - glCompileShader(f); - - // older syntax - //glCompileShaderARB(v); - //glCompileShaderARB(f); - - p = glCreateProgram(); - - // older syntax - //p = glCreateProgramObjectARB(); - - glAttachShader(p,f); - glAttachShader(p,v); - - // older syntax - //glAttachObjectARB(p,f); - //glAttachObjectARB(p,v); - - glLinkProgram(p); - - // comment out this line to not use the shader - glUseProgram(p); - - // older syntax - //glLinkProgramARB(p); - //glUseProgramObjectARB(p); -} - -/////////////////////////////////////////////////////////////////////// - -int main(int argc, char **argv) { - glutInit(&argc, argv); - glutInitDisplayMode(GLUT_DEPTH | GLUT_DOUBLE | GLUT_RGBA); - glutInitWindowPosition(100,100); - glutInitWindowSize(320,320); - glutCreateWindow("GLSL"); - - glutDisplayFunc(renderScene); - glutIdleFunc(renderScene); - glutReshapeFunc(changeSize); - glutKeyboardFunc(processNormalKeys); - - glEnable(GL_DEPTH_TEST); - glClearColor(0.0,0.0,0.0,1.0); - - glewInit(); - if (GLEW_ARB_vertex_shader && GLEW_ARB_fragment_shader) - printf("Ready for GLSL\n"); - else { - printf("No GLSL support\n"); - exit(1); - } - - setShaders(); - - glutMainLoop(); - return 0; -} |