home *** CD-ROM | disk | FTP | other *** search
- /* generic.c */
-
- /* Demo of BEOS Mesa rendering */
-
- /*
- * See Mesa/include/GL/osmesa.h for documentation of the OSMesa functions.
- *
- * If you want to render BIG images you'll probably have to increase
- * MAX_WIDTH and MAX_HEIGHT in src/config.h.
- *
- * This program is in the public domain.
- *
- * BEOS output provided by Tinic Urou
- * 5uro@informatik.uni-hamburg.de
- */
-
- #include <AppKit.h>
- #include <InterfaceKit.h>
- #include <KernelKit.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <math.h>
- #include "GL/osmesa.h"
- #include "GL/glu.h"
- #include "gltk.h"
-
- #define FALSE 0
- #define TRUE 1
- #ifndef PI
- #define PI 3.14159265358979323846
- #endif
-
- GLenum doubleBuffer, directRender;
- int W = 400, H = 400;
-
- char *imageFileName = "1.rgb";
- TK_RGBImageRec *image;
-
- int numComponents;
-
- float *minFilter, *magFilter, *sWrapMode, *tWrapMode;
- float decal[] = {GL_DECAL};
- float modulate[] = {GL_MODULATE};
- float repeat[] = {GL_REPEAT};
- float clamp[] = {GL_CLAMP};
- float nnearest[] = {GL_NEAREST};
- float linear[] = {GL_LINEAR};
- float nearest_mipmap_nearest[] = {GL_NEAREST_MIPMAP_NEAREST};
- float nearest_mipmap_linear[] = {GL_NEAREST_MIPMAP_LINEAR};
- float linear_mipmap_nearest[] = {GL_LINEAR_MIPMAP_NEAREST};
- float linear_mipmap_linear[] = {GL_LINEAR_MIPMAP_LINEAR};
- GLint sphereMap[] = {GL_SPHERE_MAP};
-
- float xRotation = 0.0, yRotation = 0.0;
- float zTranslate = -4.0;
- GLenum autoRotate = (GLenum)TRUE;
- GLenum deepestColor = (GLenum)TK_GREEN;
- GLenum isLit = (GLenum)TRUE;
- GLenum isFogged = (GLenum)FALSE;
- float *textureEnvironment = modulate;
-
- struct MipMap {
- int width, height;
- unsigned char *data;
- };
-
- int cube, cage, cylinder, torus, genericObject;
-
- float c[6][4][4][3] = {
- {
- {
- {
- 1.0, 1.0, -1.0
- },
- {
- 0.0, 1.0, -1.0
- },
- {
- 0.0, 0.0, -1.0
- },
- {
- 1.0, 0.0, -1.0
- },
- },
- {
- {
- 0.0, 1.0, -1.0
- },
- {
- -1.0, 1.0, -1.0
- },
- {
- -1.0, 0.0, -1.0
- },
- {
- 0.0, 0.0, -1.0
- },
- },
- {
- {
- 0.0, 0.0, -1.0
- },
- {
- -1.0, 0.0, -1.0
- },
- {
- -1.0, -1.0, -1.0
- },
- {
- 0.0, -1.0, -1.0
- },
- },
- {
- {
- 1.0, 0.0, -1.0
- },
- {
- 0.0, 0.0, -1.0
- },
- {
- 0.0, -1.0, -1.0
- },
- {
- 1.0, -1.0, -1.0
- },
- },
- },
- {
- {
- {
- 1.0, 1.0, 1.0
- },
- {
- 1.0, 1.0, 0.0
- },
- {
- 1.0, 0.0, 0.0
- },
- {
- 1.0, 0.0, 1.0
- },
- },
- {
- {
- 1.0, 1.0, 0.0
- },
- {
- 1.0, 1.0, -1.0
- },
- {
- 1.0, 0.0, -1.0
- },
- {
- 1.0, 0.0, 0.0
- },
- },
- {
- {
- 1.0, 0.0, -1.0
- },
- {
- 1.0, -1.0, -1.0
- },
- {
- 1.0, -1.0, 0.0
- },
- {
- 1.0, 0.0, 0.0
- },
- },
- {
- {
- 1.0, 0.0, 0.0
- },
- {
- 1.0, -1.0, 0.0
- },
- {
- 1.0, -1.0, 1.0
- },
- {
- 1.0, 0.0, 1.0
- },
- },
- },
- {
- {
- {
- -1.0, 1.0, 1.0
- },
- {
- 0.0, 1.0, 1.0
- },
- {
- 0.0, 0.0, 1.0
- },
- {
- -1.0, 0.0, 1.0
- },
- },
- {
- {
- 0.0, 1.0, 1.0
- },
- {
- 1.0, 1.0, 1.0
- },
- {
- 1.0, 0.0, 1.0
- },
- {
- 0.0, 0.0, 1.0
- },
- },
- {
- {
- 1.0, 0.0, 1.0
- },
- {
- 1.0, -1.0, 1.0
- },
- {
- 0.0, -1.0, 1.0
- },
- {
- 0.0, 0.0, 1.0
- },
- },
- {
- {
- 0.0, -1.0, 1.0
- },
- {
- -1.0, -1.0, 1.0
- },
- {
- -1.0, 0.0, 1.0
- },
- {
- 0.0, 0.0, 1.0
- },
- },
- },
- {
- {
- {
- -1.0, 1.0, -1.0
- },
- {
- -1.0, 1.0, 0.0
- },
- {
- -1.0, 0.0, 0.0
- },
- {
- -1.0, 0.0, -1.0
- },
- },
- {
- {
- -1.0, 1.0, 0.0
- },
- {
- -1.0, 1.0, 1.0
- },
- {
- -1.0, 0.0, 1.0
- },
- {
- -1.0, 0.0, 0.0
- },
- },
- {
- {
- -1.0, 0.0, 1.0
- },
- {
- -1.0, -1.0, 1.0
- },
- {
- -1.0, -1.0, 0.0
- },
- {
- -1.0, 0.0, 0.0
- },
- },
- {
- {
- -1.0, -1.0, 0.0
- },
- {
- -1.0, -1.0, -1.0
- },
- {
- -1.0, 0.0, -1.0
- },
- {
- -1.0, 0.0, 0.0
- },
- },
- },
- {
- {
- {
- -1.0, 1.0, 1.0
- },
- {
- -1.0, 1.0, 0.0
- },
- {
- 0.0, 1.0, 0.0
- },
- {
- 0.0, 1.0, 1.0
- },
- },
- {
- {
- -1.0, 1.0, 0.0
- },
- {
- -1.0, 1.0, -1.0
- },
- {
- 0.0, 1.0, -1.0
- },
- {
- 0.0, 1.0, 0.0
- },
- },
- {
- {
- 0.0, 1.0, -1.0
- },
- {
- 1.0, 1.0, -1.0
- },
- {
- 1.0, 1.0, 0.0
- },
- {
- 0.0, 1.0, 0.0
- },
- },
- {
- {
- 1.0, 1.0, 0.0
- },
- {
- 1.0, 1.0, 1.0
- },
- {
- 0.0, 1.0, 1.0
- },
- {
- 0.0, 1.0, 0.0
- },
- },
- },
- {
- {
- {
- -1.0, -1.0, -1.0
- },
- {
- -1.0, -1.0, 0.0
- },
- {
- 0.0, -1.0, 0.0
- },
- {
- 0.0, -1.0, -1.0
- },
- },
- {
- {
- -1.0, -1.0, 0.0
- },
- {
- -1.0, -1.0, 1.0
- },
- {
- 0.0, -1.0, 1.0
- },
- {
- 0.0, -1.0, 0.0
- },
- },
- {
- {
- 0.0, -1.0, 1.0
- },
- {
- 1.0, -1.0, 1.0
- },
- {
- 1.0, -1.0, 0.0
- },
- {
- 0.0, -1.0, 0.0
- },
- },
- {
- {
- 1.0, -1.0, 0.0
- },
- {
- 1.0, -1.0, -1.0
- },
- {
- 0.0, -1.0, -1.0
- },
- {
- 0.0, -1.0, 0.0
- },
- },
- }
- };
-
- float n[6][3] = {
- {
- 0.0, 0.0, -1.0
- },
- {
- 1.0, 0.0, 0.0
- },
- {
- 0.0, 0.0, 1.0
- },
- {
- -1.0, 0.0, 0.0
- },
- {
- 0.0, 1.0, 0.0
- },
- {
- 0.0, -1.0, 0.0
- }
- };
-
- GLfloat identity[16] = {
- 1, 0, 0, 0,
- 0, 1, 0, 0,
- 0, 0, 1, 0,
- 0, 0, 0, 1,
- };
-
-
- void BuildCylinder(int numEdges)
- {
- int i, top = 1.0, bottom = -1.0;
- float x[100], y[100], angle;
-
- for (i = 0; i <= numEdges; i++) {
- angle = i * 2.0 * PI / numEdges;
- x[i] = cos(angle); /* was cosf() */
- y[i] = sin(angle); /* was sinf() */
- }
-
- glNewList(cylinder, GL_COMPILE);
- glBegin(GL_TRIANGLE_STRIP);
- for (i = 0; i <= numEdges; i++) {
- glNormal3f(x[i], y[i], 0.0);
- glVertex3f(x[i], y[i], bottom);
- glVertex3f(x[i], y[i], top);
- }
- glEnd();
- glBegin(GL_TRIANGLE_FAN);
- glNormal3f(0.0, 0.0, 1.0);
- glVertex3f(0.0, 0.0, top);
- for (i = 0; i <= numEdges; i++) {
- glVertex3f(x[i], -y[i], top);
- }
- glEnd();
- glBegin(GL_TRIANGLE_FAN);
- glNormal3f(0.0, 0.0, -1.0);
- glVertex3f(0.0, 0.0, bottom);
- for (i = 0; i <= numEdges; i++) {
- glVertex3f(x[i], y[i], bottom);
- }
- glEnd();
- glEndList();
- }
-
- void BuildTorus(float rc, int numc, float rt, int numt)
- {
- int i, j, k;
- double s, t;
- double x, y, z;
- double pi, twopi;
-
- pi = 3.14159265358979323846;
- twopi = 2.0 * pi;
-
- glNewList(torus, GL_COMPILE);
- for (i = 0; i < numc; i++) {
- glBegin(GL_QUAD_STRIP);
- for (j = 0; j <= numt; j++) {
- for (k = 0; k <= 1; k++) {
- s = (i + k) % numc + 0.5;
- t = j % numt;
-
- x = cos(t*twopi/numt) * cos(s*twopi/numc);
- y = sin(t*twopi/numt) * cos(s*twopi/numc);
- z = sin(s*twopi/numc);
- glNormal3f(x, y, z);
-
- x = (rt + rc * cos(s*twopi/numc)) * cos(t*twopi/numt);
- y = (rt + rc * cos(s*twopi/numc)) * sin(t*twopi/numt);
- z = rc * sin(s*twopi/numc);
- glVertex3f(x, y, z);
- }
- }
- glEnd();
- }
- glEndList();
- }
-
- void BuildCage(void)
- {
- int i, j;
- float inc;
- float right, left, top, bottom, front, back;
-
- front = 0.0;
- back = -8.0;
-
- left = -4.0;
- bottom = -4.0;
- right = 4.0;
- top = 4.0;
-
- inc = 2.0 * 4.0 * 0.1;
-
- glNewList(cage, GL_COMPILE);
- for (i = 0; i < 10; i++) {
-
- /*
- ** Back
- */
- glBegin(GL_LINES);
- glVertex3f(left+i*inc, top, back);
- glVertex3f(left+i*inc, bottom, back);
- glEnd();
- glBegin(GL_LINES);
- glVertex3f(right, bottom+i*inc, back);
- glVertex3f(left, bottom+i*inc, back);
- glEnd();
-
- /*
- ** Front
- */
- glBegin(GL_LINES);
- glVertex3f(left+i*inc, top, front);
- glVertex3f(left+i*inc, bottom, front);
- glEnd();
- glBegin(GL_LINES);
- glVertex3f(right, bottom+i*inc, front);
- glVertex3f(left, bottom+i*inc, front);
- glEnd();
-
- /*
- ** Left
- */
- glBegin(GL_LINES);
- glVertex3f(left, bottom+i*inc, front);
- glVertex3f(left, bottom+i*inc, back);
- glEnd();
- glBegin(GL_LINES);
- glVertex3f(left, top, back+i*inc);
- glVertex3f(left, bottom, back+i*inc);
- glEnd();
-
- /*
- ** Right
- */
- glBegin(GL_LINES);
- glVertex3f(right, top-i*inc, front);
- glVertex3f(right, top-i*inc, back);
- glEnd();
- glBegin(GL_LINES);
- glVertex3f(right, top, back+i*inc);
- glVertex3f(right, bottom, back+i*inc);
- glEnd();
-
- /*
- ** Top
- */
- glBegin(GL_LINES);
- glVertex3f(left+i*inc, top, front);
- glVertex3f(left+i*inc, top, back);
- glEnd();
- glBegin(GL_LINES);
- glVertex3f(right, top, back+i*inc);
- glVertex3f(left, top, back+i*inc);
- glEnd();
-
- /*
- ** Bottom
- */
- glBegin(GL_LINES);
- glVertex3f(right-i*inc, bottom, front);
- glVertex3f(right-i*inc, bottom, back);
- glEnd();
- glBegin(GL_LINES);
- glVertex3f(right, bottom, back+i*inc);
- glVertex3f(left, bottom, back+i*inc);
- glEnd();
- }
- glEndList();
- }
-
- void BuildCube(void)
- {
- int i, j;
-
- glNewList(cube, GL_COMPILE);
- for (i = 0; i < 6; i++) {
- for (j = 0; j < 4; j++) {
- glNormal3fv(n[i]);
- glBegin(GL_POLYGON);
- glVertex3fv(c[i][j][0]);
- glVertex3fv(c[i][j][1]);
- glVertex3fv(c[i][j][2]);
- glVertex3fv(c[i][j][3]);
- glEnd();
- }
- }
- glEndList();
- }
-
- void BuildLists(void)
- {
-
- cube = glGenLists(1);
- BuildCube();
-
- cage = glGenLists(2);
- BuildCage();
-
- cylinder = glGenLists(3);
- BuildCylinder(60);
-
- torus = glGenLists(4);
- BuildTorus(0.65, 20, .85, 65);
-
- genericObject = torus;
- }
-
- void SetDeepestColor(void)
- {
- GLint redBits, greenBits, blueBits;
-
- glGetIntegerv(GL_RED_BITS, &redBits);
- glGetIntegerv(GL_GREEN_BITS, &greenBits);
- glGetIntegerv(GL_BLUE_BITS, &blueBits);
-
- deepestColor = (GLenum)((redBits >= greenBits) ? TK_RED : TK_GREEN);
- deepestColor = (GLenum)((deepestColor >= blueBits) ? deepestColor : TK_BLUE);
- }
-
- void SetDefaultSettings(void)
- {
-
- magFilter = nnearest;
- minFilter = nnearest;
- sWrapMode = repeat;
- tWrapMode = repeat;
- textureEnvironment = modulate;
- autoRotate = (GLenum)TRUE;
- }
-
- unsigned char *AlphaPadImage(int bufSize, unsigned char *inData, int alpha)
- {
- unsigned char *outData, *out_ptr, *in_ptr;
- int i;
-
- outData = (unsigned char *) malloc(bufSize * 4);
- out_ptr = outData;
- in_ptr = inData;
-
- for (i = 0; i < bufSize; i++) {
- *out_ptr++ = *in_ptr++;
- *out_ptr++ = *in_ptr++;
- *out_ptr++ = *in_ptr++;
- *out_ptr++ = alpha;
- }
-
- free (inData);
- return outData;
- }
-
- void Init(void)
- {
- float ambient[] = {0.0, 0.0, 0.0, 1.0};
- float diffuse[] = {0.0, 1.0, 0.0, 1.0};
- float specular[] = {1.0, 1.0, 1.0, 1.0};
- float position[] = {2.0, 2.0, 0.0, 1.0};
- float fog_color[] = {0.0, 0.0, 0.0, 1.0};
- float mat_ambient[] = {0.0, 0.0, 0.0, 1.0};
- float mat_shininess[] = {90.0};
- float mat_specular[] = {1.0, 1.0, 1.0, 1.0};
- float mat_diffuse[] = {1.0, 1.0, 1.0, 1.0};
- float lmodel_ambient[] = {0.0, 0.0, 0.0, 1.0};
- float lmodel_twoside[] = {GL_TRUE};
- float lmodel_local_viewer[] = {GL_FALSE};
-
- SetDeepestColor();
- SetDefaultSettings();
-
- if (numComponents == 4) {
- image = tkRGBImageLoad(imageFileName);
- image->data = AlphaPadImage(image->sizeX*image->sizeY,
- image->data, 128);
- glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
- gluBuild2DMipmaps(GL_TEXTURE_2D, numComponents,
- image->sizeX, image->sizeY,
- GL_RGBA, GL_UNSIGNED_BYTE, image->data);
- } else {
- image = tkRGBImageLoad(imageFileName);
- glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
- gluBuild2DMipmaps(GL_TEXTURE_2D, numComponents,
- image->sizeX, image->sizeY,
- GL_RGB, GL_UNSIGNED_BYTE, image->data);
- }
-
- glFogf(GL_FOG_DENSITY, 0.125);
- glFogi(GL_FOG_MODE, GL_LINEAR);
- glFogf(GL_FOG_START, 4.0);
- glFogf(GL_FOG_END, 9.0);
- glFogfv(GL_FOG_COLOR, fog_color);
-
- glLightfv(GL_LIGHT0, GL_AMBIENT, ambient);
- glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuse);
- glLightfv(GL_LIGHT0, GL_SPECULAR, specular);
- glLightfv(GL_LIGHT0, GL_POSITION, position);
-
- glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, mat_shininess);
- glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, mat_specular);
- glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, mat_diffuse);
- glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, mat_ambient);
-
- glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
- glLightModelfv(GL_LIGHT_MODEL_TWO_SIDE, lmodel_twoside);
- glShadeModel(GL_SMOOTH);
-
- glEnable(GL_LIGHTING);
- glEnable(GL_LIGHT0);
-
- glClearColor(0.0, 0.0, 0.0, 0.0);
- glViewport(0, 0, W, H);
- glEnable(GL_DEPTH_TEST);
-
- glFrontFace(GL_CW);
- glEnable(GL_CULL_FACE);
- glCullFace(GL_BACK);
-
- glEnable(GL_TEXTURE_2D);
- glTexGeniv(GL_S, GL_TEXTURE_GEN_MODE, sphereMap);
- glTexGeniv(GL_T, GL_TEXTURE_GEN_MODE, sphereMap);
- glEnable(GL_TEXTURE_GEN_S);
- glEnable(GL_TEXTURE_GEN_T);
-
- glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, magFilter);
- glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, minFilter);
- glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, sWrapMode);
- glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, tWrapMode);
-
- glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, textureEnvironment);
-
- BuildLists();
- }
-
- void ReInit(void)
- {
-
- if (genericObject == torus) {
- glEnable(GL_DEPTH_TEST);
- } else {
- glDisable(GL_DEPTH_TEST);
- }
- if (isFogged) {
- textureEnvironment = modulate;
- }
-
- glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, magFilter);
- glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, minFilter);
- glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, textureEnvironment);
- }
-
- void Draw(void)
- {
-
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- glFrustum(-0.2, 0.2, -0.2, 0.2, 0.15, 9.0);
- glMatrixMode(GL_MODELVIEW);
-
- glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
- if (isFogged) {
- glEnable(GL_FOG);
- glColor3fv(tkRGBMap[deepestColor]);
- } else {
- glColor3fv(tkRGBMap[TK_WHITE]);
- }
- glDisable(GL_LIGHTING);
- glDisable(GL_LIGHT0);
- glDisable(GL_TEXTURE_2D);
- glCallList(cage);
-
- glPushMatrix();
- glTranslatef(0.0, 0.0, zTranslate);
- glRotatef(xRotation, 1, 0, 0);
- glRotatef(yRotation, 0, 1, 0);
-
- if (isLit == TRUE) {
- glEnable(GL_LIGHTING);
- glEnable(GL_LIGHT0);
- }
-
- glEnable(GL_TEXTURE_2D);
- if (isFogged) {
- glDisable(GL_FOG);
- }
- glPolygonMode(GL_FRONT, GL_FILL);
- glColor3fv(tkRGBMap[deepestColor]);
- glCallList(genericObject);
-
- glPopMatrix();
- glFlush();
-
- if (autoRotate) {
- xRotation += .75;
- yRotation += .375;
- }
- tkSwapBuffers();
- }
-
- void Reshape(int width, int height)
- {
-
- W = width;
- H = height;
- ReInit();
- glViewport( 0, 0, width, height ); /*new*/
- }
-
- GLenum Args(int argc, char **argv)
- {
- GLint i;
-
- doubleBuffer = GL_FALSE;
- directRender = GL_TRUE;
- numComponents = 4;
-
- 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 if (strcmp(argv[i], "-dr") == 0) {
- directRender = GL_TRUE;
- } else if (strcmp(argv[i], "-ir") == 0) {
- directRender = GL_FALSE;
- } else if (strcmp(argv[i], "-f") == 0) {
- if (i+1 >= argc || argv[i+1][0] == '-') {
- printf("-f (No file name).\n");
- return GL_FALSE;
- } else {
- imageFileName = argv[++i];
- }
- } else if (strcmp(argv[i], "-4") == 0) {
- numComponents = 4;
- } else if (strcmp(argv[i], "-3") == 0) {
- numComponents = 3;
- } else {
- printf("%s (Bad option).\n", argv[i]);
- return GL_FALSE;
- }
- }
- return GL_TRUE;
- }
-
- int gl_width=300,gl_height=300;
-
- const ulong APP_SIGNATURE = '????';
- const ulong MSG_REDRAW = 1;
-
- class MesaWindow;
- class MesaView;
- class MesaApp;
-
- // Lets make our life easy and make them global:
-
- BBitmap *the_bitmap;
- MesaView *the_view;
- MesaWindow *the_window;
-
- class MesaView : public BView
- {
- public:
-
- MesaView(BRect frame):BView(frame,"Mesa View",B_FOLLOW_NONE,B_WILL_DRAW)
- {
- };
-
- void KeyDown(ulong aKey)
- {
- switch(aKey)
- {
- case B_LEFT_ARROW:
- yRotation -= 0.5;
- autoRotate = (GLenum)FALSE;
- ReInit();
- break;
- case B_RIGHT_ARROW:
- yRotation += 0.5;
- autoRotate = (GLenum)FALSE;
- ReInit();
- break;
- case B_UP_ARROW:
- xRotation -= 0.5;
- autoRotate = (GLenum)FALSE;
- ReInit();
- break;
- case B_DOWN_ARROW:
- xRotation += 0.5;
- autoRotate = (GLenum)FALSE;
- ReInit();
- break;
- case 'a':
- autoRotate = (GLenum)!autoRotate;
- ReInit();
- break;
- case 'c':
- genericObject = (GLenum)((genericObject == cube) ? cylinder : cube);
- ReInit();
- break;
- case 'd':
- textureEnvironment = decal;
- ReInit();
- break;
- case 'm':
- textureEnvironment = modulate;
- ReInit();
- break;
- case 'l':
- isLit = (GLenum)!isLit;
- ReInit();
- break;
- case 'f':
- isFogged = (GLenum)!isFogged;
- ReInit();
- break;
- case 't':
- genericObject = (GLenum)torus;
- ReInit();
- break;
- case '0':
- magFilter = nnearest;
- ReInit();
- break;
- case '1':
- magFilter = linear;
- ReInit();
- break;
- case '2':
- minFilter = nnearest;
- ReInit();
- break;
- case '3':
- minFilter = linear;
- ReInit();
- break;
- case '4':
- minFilter = nearest_mipmap_nearest;
- ReInit();
- break;
- case '5':
- minFilter = nearest_mipmap_linear;
- ReInit();
- break;
- case '6':
- minFilter = linear_mipmap_nearest;
- ReInit();
- break;
- case '7':
- minFilter = linear_mipmap_linear;
- ReInit();
- break;
- }
- };
-
- void Draw(BRect frame)
- {
- DrawBitmap(the_bitmap,BPoint(0,0));
- };
- };
-
- class MesaWindow : public BWindow
- {
- public:
-
- MesaWindow(int width, int height):BWindow(BRect(0,0,width-1,height-1),"MesaView",B_TITLED_WINDOW,B_NOT_RESIZABLE|B_NOT_ZOOMABLE)
- {
- // Move window to right position
- MoveTo(80, 24);
- // Create bitmap view
- Lock();
- AddChild(the_view = new MesaView(BRect(0, 0, (gl_width)-1, (gl_height)-1)));
- the_view->MakeFocus();
- Unlock();
- };
-
- void MessageReceived(BMessage *msg)
- {
- switch(msg->what)
- {
- case MSG_REDRAW:
- Lock();
- the_view->DrawBitmap(the_bitmap,BPoint(0,0));
- Draw();
- Unlock();
- PostMessage(MSG_REDRAW);
- break;
- default:
- BWindow::MessageReceived(msg);
- break;
- }
- };
-
- bool QuitRequested(void)
- {
- be_app->PostMessage(B_QUIT_REQUESTED);
- return TRUE;
- };
- };
-
- class MesaApp : public BApplication
- {
- OSMesaContext ctx;
-
- public:
-
- MesaApp():BApplication(APP_SIGNATURE)
- {
- the_window = NULL;
- the_bitmap = NULL;
- };
-
- void ReadyToRun(void)
- {
- // Allocate the bitmap
- the_bitmap = new BBitmap(BRect(0, 0, gl_width-1, gl_height-1), B_RGB_32_BIT);
-
- uchar *bits = (uchar *)the_bitmap->Bits();
-
- memset(bits,0,the_bitmap->BytesPerRow()*gl_height);
-
- // Open window
- the_window = new MesaWindow((gl_width),(gl_height));
- the_window->Show();
-
- unsigned char *buffer;
- double start,end;
-
- // Create an RGBA-mode context
- ctx = OSMesaCreateContext( GL_RGBA, NULL );
-
- // Bind the buffer to the context and make it current */
- OSMesaMakeCurrent( ctx, bits, GL_UNSIGNED_BYTE, gl_width, gl_height );
- OSMesaPixelStore( OSMESA_Y_UP, 0 );
-
- Init();
- Reshape(gl_width,gl_height);
- the_window->PostMessage(MSG_REDRAW);
- };
-
- bool QuitRequested(void)
- {
- // Make sure that the window closes first
- if (BApplication::QuitRequested())
- {
- OSMesaDestroyContext( ctx );
- if (the_bitmap) delete the_bitmap;
- return TRUE;
- }
- return FALSE;
- };
-
- void AboutRequested(void)
- {
- char str[256];
- sprintf(str, "MesaDemos, ported by Tinic Urou\n<5uro@informatik.uni-hamburg.de>\nFreely distributable.");
- BAlert *the_alert = new BAlert("", str, "OK");
- the_alert->Go();
- };
- };
-
- int main( int argc, char *argv[] )
- {
- MesaApp *the_app;
-
- Args(argc,argv);
-
- the_app = new MesaApp();
- the_app->Run();
- delete the_app;
-
- return 0;
- }
-