Opengl Samples - Bitmap

#include <stdio.h> #include <string.h> #include <stdlib.h> #include <GL/glut.h> #define OPENGL_WIDTH 24 #define OPENGL_HEIGHT 13 GLenum rgb, doubleBuffer; float boxA[3] = { 0, 0, 0 }; float boxB[3] = { -100, 0, 0 }; float boxC[3] = { 100, 0, 0 }; float boxD[3] = { 0, 95, 0 }; float boxE[3] = { 0, -105, 0 }; GLubyte OpenGL_bits1[] = { 0x00, 0x03, 0x00, 0x7f, 0xfb, 0xff, 0x7f, 0xfb, 0xff, 0x00, 0x03, 0x00, 0x3e, 0x8f, 0xb7, 0x63, 0xdb, 0xb0, 0x63, 0xdb, 0xb7, 0x63, 0xdb, 0xb6, 0x63, 0x8f, 0xf3, 0x63, 0x00, 0x00, 0x63, 0x00, 0x00, 0x63, 0x00, 0x00, 0x3e, 0x00, 0x00, }; GLubyte OpenGL_bits2[] = { 0x00, 0x00, 0x00, 0xff, 0xff, 0x01, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00, 0xf9, 0xfc, 0x01, 0x8d, 0x0d, 0x00, 0x8d, 0x0d, 0x00, 0x8d, 0x0d, 0x00, 0xcc, 0x0d, 0x00, 0x0c, 0x4c, 0x0a, 0x0c, 0x4c, 0x0e, 0x8c, 0xed, 0x0e, 0xf8, 0x0c, 0x00, }; GLubyte logo_bits[] = { 0x00, 0x66, 0x66, 0xff, 0x66, 0x66, 0x00, 0x00, 0x00, 0xff, 0x3c, 0x3c, 0x00, 0x42, 0x40, 0xff, 0x42, 0x40, 0x00, 0x41, 0x40, 0xff, 0x21, 0x20, 0x00, 0x2f, 0x20, 0xff, 0x20, 0x20, 0x00, 0x10, 0x90, 0xff, 0x10, 0x90, 0x00, 0x0f, 0x10, 0xff, 0x00, 0x00, 0x00, 0x66, 0x66, 0xff, 0x66, 0x66, }; static void Init(void) { if (!rgb) { glutSetColor(0, 0.0, 0.0, 0.0); glutSetColor(1, 1.0, 0.0, 0.0); glutSetColor(2, 0.0, 1.0, 0.0); glutSetColor(3, 1.0, 1.0, 0.0); glutSetColor(4, 0.0, 0.0, 1.0); glutSetColor(5, 1.0, 0.0, 1.0); glutSetColor(6, 0.0, 1.0, 1.0); glutSetColor(7, 1.0, 1.0, 1.0); } glClearColor(0.0, 0.0, 0.0, 0.0); glClearIndex(0.0); } static void Reshape(int width, int height) { glViewport(0, 0, width, height); glMatrixMode(GL_PROJECTION); glLoadIdentity(); gluOrtho2D(-175, 175, -175, 175); glMatrixMode(GL_MODELVIEW); } static void Key(unsigned char key, int x, int y) { switch (key) { case 27: exit(0); } } static void Draw(void) { glClear(GL_COLOR_BUFFER_BIT); glRasterPos3fv(boxA); glPixelStorei(GL_UNPACK_ROW_LENGTH, 24); glPixelStorei(GL_UNPACK_SKIP_PIXELS, 8); glPixelStorei(GL_UNPACK_SKIP_ROWS, 2); glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE); glPixelStorei(GL_UNPACK_ALIGNMENT, 1); glBitmap(16, 12, 8.0, 0.0, 0.0, 0.0, logo_bits); glPixelStorei(GL_UNPACK_ROW_LENGTH, 0); glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0); glPixelStorei(GL_UNPACK_SKIP_ROWS, 0); glPixelStorei(GL_UNPACK_LSB_FIRST, GL_TRUE); glPixelStorei(GL_UNPACK_ALIGNMENT, 1); (rgb) ? glColor3f(1.0, 1.0, 1.0) : glIndexi(7); glRasterPos3fv(boxB); glBitmap(OPENGL_WIDTH, OPENGL_HEIGHT, OPENGL_WIDTH, 0.0, OPENGL_WIDTH, 0.0, OpenGL_bits1); glBitmap(OPENGL_WIDTH, OPENGL_HEIGHT, OPENGL_WIDTH, 0.0, OPENGL_WIDTH, 0.0, OpenGL_bits2); (rgb) ? glColor3f(0.0, 1.0, 1.0) : glIndexi(6); glRasterPos3fv(boxC); glBitmap(OPENGL_WIDTH, OPENGL_HEIGHT, OPENGL_WIDTH, 0.0, OPENGL_WIDTH, 0.0, OpenGL_bits1); glBitmap(OPENGL_WIDTH, OPENGL_HEIGHT, OPENGL_WIDTH, 0.0, OPENGL_WIDTH, 0.0, OpenGL_bits2); (rgb) ? glColor3f(1.0, 0.0, 1.0) : glIndexi(5); glRasterPos3fv(boxD); glBitmap(OPENGL_WIDTH, OPENGL_HEIGHT, OPENGL_WIDTH, 0.0, OPENGL_WIDTH, 0.0, OpenGL_bits1); glBitmap(OPENGL_WIDTH, OPENGL_HEIGHT, OPENGL_WIDTH, 0.0, OPENGL_WIDTH, 0.0, OpenGL_bits2); (rgb) ? glColor3f(1.0, 1.0, 0.0) : glIndexi(3); glRasterPos3fv(boxE); glBitmap(OPENGL_WIDTH, OPENGL_HEIGHT, OPENGL_WIDTH, 0.0, OPENGL_WIDTH, 0.0, OpenGL_bits1); glBitmap(OPENGL_WIDTH, OPENGL_HEIGHT, OPENGL_WIDTH, 0.0, OPENGL_WIDTH, 0.0, OpenGL_bits2); if (doubleBuffer) { glutSwapBuffers(); } else { glFlush(); } } static void Args(int argc, char **argv) { GLint i; rgb = GL_TRUE; doubleBuffer = GL_FALSE; for (i = 1; i < argc; i++) { if (strcmp(argv[i], "-ci") == 0) { rgb = GL_FALSE; } else if (strcmp(argv[i], "-rgb") == 0) { rgb = GL_TRUE; } else if (strcmp(argv[i], "-sb") == 0) { doubleBuffer = GL_FALSE; } else if (strcmp(argv[i], "-db") == 0) { doubleBuffer = GL_TRUE; } } } int main(int argc, char **argv) { GLenum type; glutInit(&argc, argv); Args(argc, argv); type = (rgb) ? GLUT_RGB : GLUT_INDEX; type |= (doubleBuffer) ? GLUT_DOUBLE : GLUT_SINGLE; glutInitDisplayMode(type); glutInitWindowSize(300, 300); glutCreateWindow("Bitmap Test"); Init(); glutReshapeFunc(Reshape); glutKeyboardFunc(Key); glutDisplayFunc(Draw); glutMainLoop(); }