+++ /dev/null
-
-#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[50000];
- 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 );
- }
-
-
- {
- 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);
- }
-
- glClearColor(.1, .3, .5, 0);
- fclose(f);
-}
-
-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;
-}
projects / mesa.git / blobdiff