diff options
Diffstat (limited to 'progs/fp/fp-tri.c')
| -rw-r--r-- | progs/fp/fp-tri.c | 256 |
1 files changed, 0 insertions, 256 deletions
diff --git a/progs/fp/fp-tri.c b/progs/fp/fp-tri.c deleted file mode 100644 index 26af66ad84..0000000000 --- a/progs/fp/fp-tri.c +++ /dev/null @@ -1,256 +0,0 @@ - -#include <stdio.h> -#include <string.h> -#include <stdlib.h> - -#ifndef WIN32 -#include <unistd.h> -#include <signal.h> -#endif - -#include <GL/glew.h> -#include <GL/glut.h> - -#include "readtex.c" - - -#define TEXTURE_FILE "../images/bw.rgb" - -unsigned show_fps = 0; -unsigned int frame_cnt = 0; -void alarmhandler(int); -static const char *filename = NULL; - -static void usage(char *name) -{ - fprintf(stderr, "usage: %s [ options ] shader_filename\n", name); -#ifndef WIN32 - fprintf(stderr, "\n" ); - fprintf(stderr, "options:\n"); - fprintf(stderr, " -fps show frames per second\n"); -#endif -} - -#ifndef WIN32 -void alarmhandler (int sig) -{ - if (sig == SIGALRM) { - printf("%d frames in 5.0 seconds = %.3f FPS\n", frame_cnt, - frame_cnt / 5.0); - - frame_cnt = 0; - } - signal(SIGALRM, alarmhandler); - alarm(5); -} -#endif - -static void args(int argc, char *argv[]) -{ - GLint i; - - for (i = 1; i < argc; i++) { - if (strcmp(argv[i], "-fps") == 0) { - show_fps = 1; - } - else if (i == argc - 1) { - filename = argv[i]; - } - else { - usage(argv[0]); - exit(1); - } - } - - if (!filename) { - usage(argv[0]); - exit(1); - } -} - -static void Init( void ) -{ - GLuint Texture; - GLint errno; - GLuint prognum; - char buf[4096]; - GLuint sz; - FILE *f; - - if ((f = fopen(filename, "r")) == NULL) { - fprintf(stderr, "Couldn't open %s\n", filename); - exit(1); - } - - sz = fread(buf, 1, sizeof(buf), f); - if (!feof(f)) { - fprintf(stderr, "file too long\n"); - exit(1); - } - fprintf(stderr, "%.*s\n", sz, buf); - - if (!GLEW_ARB_fragment_program) { - printf("Error: GL_ARB_fragment_program not supported!\n"); - exit(1); - } - printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER)); - - /* Setup the fragment program */ - glGenProgramsARB(1, &prognum); - glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, prognum); - glProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB, - sz, (const GLubyte *)buf); - - errno = glGetError(); - printf("glGetError = 0x%x\n", errno); - if (errno != GL_NO_ERROR) { - GLint errorpos; - - glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &errorpos); - printf("errorpos: %d\n", errorpos); - printf("glError(GL_PROGRAM_ERROR_STRING_ARB) = %s\n", - (char *) glGetString(GL_PROGRAM_ERROR_STRING_ARB)); - } - glEnable(GL_FRAGMENT_PROGRAM_ARB); - - - /* Load texture */ - glGenTextures(1, &Texture); - glBindTexture(GL_TEXTURE_2D, Texture); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - glPixelStorei(GL_UNPACK_ALIGNMENT, 1); - if (!LoadRGBMipmaps(TEXTURE_FILE, GL_RGB)) { - printf("Error: couldn't load texture image file %s\n", TEXTURE_FILE); - exit(1); - } - - - glGenTextures(1, &Texture); - glActiveTextureARB(GL_TEXTURE0_ARB + 1); - glBindTexture(GL_TEXTURE_2D, Texture); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); - glPixelStorei(GL_UNPACK_ALIGNMENT, 1); - - { - GLubyte data[32][32]; - int width = 32; - int height = 32; - int i; - int j; - - for (i = 0; i < 32; i++) - for (j = 0; j < 32; j++) - { - /** - ** +-----------+ - ** | W | - ** | +-----+ | - ** | | | | - ** | | B | | - ** | | | | - ** | +-----+ | - ** | | - ** +-----------+ - **/ - int i2 = i - height / 2; - int j2 = j - width / 2; - int h8 = height / 8; - int w8 = width / 8; - if ( -h8 <= i2 && i2 <= h8 && -w8 <= j2 && j2 <= w8 ) { - data[i][j] = 0x00; - } else if ( -2 * h8 <= i2 && i2 <= 2 * h8 && -2 * w8 <= j2 && j2 <= 2 * w8 ) { - data[i][j] = 0x55; - } else if ( -3 * h8 <= i2 && i2 <= 3 * h8 && -3 * w8 <= j2 && j2 <= 3 * w8 ) { - data[i][j] = 0xaa; - } else { - data[i][j] = 0xff; - } - } - - glTexImage2D( GL_TEXTURE_2D, 0, - GL_ALPHA8, - 32, 32, 0, - GL_ALPHA, GL_UNSIGNED_BYTE, data ); - } - - - glClearColor(.1, .3, .5, 0); -} - -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 Display(void) -{ - glClear(GL_COLOR_BUFFER_BIT); - - glProgramLocalParameter4fARB(GL_FRAGMENT_PROGRAM_ARB, 0, 1.0, 1.0, 0.0, 0.0); - glProgramLocalParameter4fARB(GL_FRAGMENT_PROGRAM_ARB, 1, 0.0, 0.0, 1.0, 1.0); - glBegin(GL_TRIANGLES); - - glColor3f(0,0,1); - glTexCoord3f(1,1,0); - glVertex3f( 0.9, -0.9, -30.0); - - glColor3f(1,0,0); - glTexCoord3f(1,-1,0); - glVertex3f( 0.9, 0.9, -30.0); - - glColor3f(0,1,0); - glTexCoord3f(-1,0,0); - glVertex3f(-0.9, 0.0, -30.0); - glEnd(); - - glFlush(); - if (show_fps) { - ++frame_cnt; - glutPostRedisplay(); - } -} - - -int main(int argc, char **argv) -{ - glutInit(&argc, argv); - glutInitWindowPosition(0, 0); - glutInitWindowSize(250, 250); - glutInitDisplayMode(GLUT_RGB | GLUT_SINGLE | GLUT_DEPTH); - args(argc, argv); - glutCreateWindow(filename); - glewInit(); - glutReshapeFunc(Reshape); - glutKeyboardFunc(Key); - glutDisplayFunc(Display); - Init(); -#ifndef WIN32 - if (show_fps) { - signal(SIGALRM, alarmhandler); - alarm(5); - } -#endif - glutMainLoop(); - return 0; -} |