progs/egl/demo3.c

   1 /*
   2  * Exercise EGL API functions
   3  */
   4
   5 #define EGL_EGLEXT_PROTOTYPES
   6
   7 #include <EGL/egl.h>
   8 #include <EGL/eglext.h>
   9 #include <GL/gl.h>
  10 #include <assert.h>
  11 #include <stdio.h>
  12 #include <stdlib.h>
  13 #include <string.h>
  14
  15
  16
  17 #define PIXEL_CENTER(x) ((long)(x) + 0.5)
  18
  19 #define GAP 10
  20 #define ROWS 3
  21 #define COLS 4
  22
  23 #define OPENGL_WIDTH 48
  24 #define OPENGL_HEIGHT 13
  25
  26
  27 GLenum rgb, doubleBuffer, windType;
  28 GLint windW, windH;
  29
  30 GLenum mode1, mode2;
  31 GLint boxW, boxH;
  32 GLubyte OpenGL_bits[] = {
  33    0x00, 0x03, 0x00, 0x00, 0x00, 0x00,
  34    0x7f, 0xfb, 0xff, 0xff, 0xff, 0x01,
  35    0x7f, 0xfb, 0xff, 0xff, 0xff, 0x01,
  36    0x00, 0x03, 0x00, 0x00, 0x00, 0x00,
  37    0x3e, 0x8f, 0xb7, 0xf9, 0xfc, 0x01,
  38    0x63, 0xdb, 0xb0, 0x8d, 0x0d, 0x00,
  39    0x63, 0xdb, 0xb7, 0x8d, 0x0d, 0x00,
  40    0x63, 0xdb, 0xb6, 0x8d, 0x0d, 0x00,
  41    0x63, 0x8f, 0xf3, 0xcc, 0x0d, 0x00,
  42    0x63, 0x00, 0x00, 0x0c, 0x4c, 0x0a,
  43    0x63, 0x00, 0x00, 0x0c, 0x4c, 0x0e,
  44    0x63, 0x00, 0x00, 0x8c, 0xed, 0x0e,
  45    0x3e, 0x00, 0x00, 0xf8, 0x0c, 0x00,
  46 };
  47
  48
  49 static void Init(void)
  50 {
  51
  52     mode1 = GL_TRUE;
  53     mode2 = GL_TRUE;
  54 }
  55
  56 static void Reshape(int width, int height)
  57 {
  58
  59     windW = (GLint)width;
  60     windH = (GLint)height;
  61 }
  62
  63 #if 0
  64 static void RotateColorMask(void)
  65 {
  66     static GLint rotation = 0;
  67
  68     rotation = (rotation + 1) & 0x3;
  69     switch (rotation) {
  70       case 0:
  71         glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
  72         glIndexMask( 0xff );
  73         break;
  74       case 1:
  75         glColorMask(GL_FALSE, GL_TRUE, GL_TRUE, GL_TRUE);
  76         glIndexMask(0xFE);
  77         break;
  78       case 2:
  79         glColorMask(GL_TRUE, GL_FALSE, GL_TRUE, GL_TRUE);
  80         glIndexMask(0xFD);
  81         break;
  82       case 3:
  83         glColorMask(GL_TRUE, GL_TRUE, GL_FALSE, GL_TRUE);
  84         glIndexMask(0xFB);
  85         break;
  86     }
  87 }
  88 #endif
  89
  90 static void Viewport(GLint row, GLint column)
  91 {
  92     GLint x, y;
  93
  94     boxW = (windW - (COLS + 1) * GAP) / COLS;
  95     boxH = (windH - (ROWS + 1) * GAP) / ROWS;
  96
  97     x = GAP + column * (boxW + GAP);
  98     y = GAP + row * (boxH + GAP);
  99
 100     glViewport(x, y, boxW, boxH);
 101
 102     glMatrixMode(GL_PROJECTION);
 103     glLoadIdentity();
 104     glOrtho(-boxW/2, boxW/2, -boxH/2, boxH/2, 0.0, 1.0);
 105     glMatrixMode(GL_MODELVIEW);
 106
 107     glEnable(GL_SCISSOR_TEST);
 108     glScissor(x, y, boxW, boxH);
 109 }
 110
 111 enum {
 112     COLOR_BLACK = 0,
 113     COLOR_RED,
 114     COLOR_GREEN,
 115     COLOR_YELLOW,
 116     COLOR_BLUE,
 117     COLOR_MAGENTA,
 118     COLOR_CYAN,
 119     COLOR_WHITE
 120 };
 121
 122 static float RGBMap[9][3] = {
 123     {0, 0, 0},
 124     {1, 0, 0},
 125     {0, 1, 0},
 126     {1, 1, 0},
 127     {0, 0, 1},
 128     {1, 0, 1},
 129     {0, 1, 1},
 130     {1, 1, 1},
 131     {0.5, 0.5, 0.5}
 132 };
 133
 134 static void SetColor(int c)
 135 {
 136      glColor3fv(RGBMap[c]);
 137 }
 138
 139 static void Point(void)
 140 {
 141     GLint i;
 142
 143     glBegin(GL_POINTS);
 144         SetColor(COLOR_WHITE);
 145         glVertex2i(0, 0);
 146         for (i = 1; i < 8; i++) {
 147             GLint j = i * 2;
 148             SetColor(COLOR_BLACK+i);
 149             glVertex2i(-j, -j);
 150             glVertex2i(-j, 0);
 151             glVertex2i(-j, j);
 152             glVertex2i(0, j);
 153             glVertex2i(j, j);
 154             glVertex2i(j, 0);
 155             glVertex2i(j, -j);
 156             glVertex2i(0, -j);
 157         }
 158     glEnd();
 159 }
 160
 161 static void Lines(void)
 162 {
 163     GLint i;
 164
 165     glPushMatrix();
 166
 167     glTranslatef(-12, 0, 0);
 168     for (i = 1; i < 8; i++) {
 169         SetColor(COLOR_BLACK+i);
 170         glBegin(GL_LINES);
 171             glVertex2i(-boxW/4, -boxH/4);
 172             glVertex2i(boxW/4, boxH/4);
 173         glEnd();
 174         glTranslatef(4, 0, 0);
 175     }
 176
 177     glPopMatrix();
 178
 179     glBegin(GL_LINES);
 180         glVertex2i(0, 0);
 181     glEnd();
 182 }
 183
 184 static void LineStrip(void)
 185 {
 186
 187     glBegin(GL_LINE_STRIP);
 188         SetColor(COLOR_RED);
 189         glVertex2f(PIXEL_CENTER(-boxW/4), PIXEL_CENTER(-boxH/4));
 190         SetColor(COLOR_GREEN);
 191         glVertex2f(PIXEL_CENTER(-boxW/4), PIXEL_CENTER(boxH/4));
 192         SetColor(COLOR_BLUE);
 193         glVertex2f(PIXEL_CENTER(boxW/4), PIXEL_CENTER(boxH/4));
 194         SetColor(COLOR_WHITE);
 195         glVertex2f(PIXEL_CENTER(boxW/4), PIXEL_CENTER(-boxH/4));
 196     glEnd();
 197
 198     glBegin(GL_LINE_STRIP);
 199         glVertex2i(0, 0);
 200     glEnd();
 201 }
 202
 203 static void LineLoop(void)
 204 {
 205
 206     glBegin(GL_LINE_LOOP);
 207         SetColor(COLOR_RED);
 208         glVertex2f(PIXEL_CENTER(-boxW/4), PIXEL_CENTER(-boxH/4));
 209         SetColor(COLOR_GREEN);
 210         glVertex2f(PIXEL_CENTER(-boxW/4), PIXEL_CENTER(boxH/4));
 211         SetColor(COLOR_BLUE);
 212         glVertex2f(PIXEL_CENTER(boxW/4), PIXEL_CENTER(boxH/4));
 213         SetColor(COLOR_WHITE);
 214         glVertex2f(PIXEL_CENTER(boxW/4), PIXEL_CENTER(-boxH/4));
 215     glEnd();
 216
 217     glEnable(GL_LOGIC_OP);
 218     glLogicOp(GL_XOR);
 219
 220     glEnable(GL_BLEND);
 221     glBlendFunc(GL_ONE, GL_ONE);
 222
 223     SetColor(COLOR_MAGENTA);
 224     glBegin(GL_LINE_LOOP);
 225         glVertex2f(PIXEL_CENTER(-boxW/8), PIXEL_CENTER(-boxH/8));
 226         glVertex2f(PIXEL_CENTER(-boxW/8), PIXEL_CENTER(boxH/8));
 227     glEnd();
 228     glBegin(GL_LINE_LOOP);
 229         glVertex2f(PIXEL_CENTER(-boxW/8), PIXEL_CENTER(boxH/8+5));
 230         glVertex2f(PIXEL_CENTER(boxW/8), PIXEL_CENTER(boxH/8+5));
 231     glEnd();
 232     glDisable(GL_LOGIC_OP);
 233     glDisable(GL_BLEND);
 234
 235     SetColor(COLOR_GREEN);
 236     glBegin(GL_POINTS);
 237         glVertex2i(0, 0);
 238     glEnd();
 239
 240     glBegin(GL_LINE_LOOP);
 241         glVertex2i(0, 0);
 242     glEnd();
 243 }
 244
 245 static void Bitmap(void)
 246 {
 247
 248     glBegin(GL_LINES);
 249         SetColor(COLOR_GREEN);
 250         glVertex2i(-boxW/2, 0);
 251         glVertex2i(boxW/2, 0);
 252         glVertex2i(0, -boxH/2);
 253         glVertex2i(0, boxH/2);
 254         SetColor(COLOR_RED);
 255         glVertex2i(0, -3);
 256         glVertex2i(0, -3+OPENGL_HEIGHT);
 257         SetColor(COLOR_BLUE);
 258         glVertex2i(0, -3);
 259         glVertex2i(OPENGL_WIDTH, -3);
 260     glEnd();
 261
 262     SetColor(COLOR_GREEN);
 263
 264     glPixelStorei(GL_UNPACK_LSB_FIRST, GL_TRUE);
 265     glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
 266
 267     glRasterPos2i(0, 0);
 268     glBitmap(OPENGL_WIDTH, OPENGL_HEIGHT, 0, 3, 0.0, 0.0, OpenGL_bits);
 269 }
 270
 271 static void Triangles(void)
 272 {
 273
 274     glBegin(GL_TRIANGLES);
 275         SetColor(COLOR_GREEN);
 276         glVertex2i(-boxW/4, -boxH/4);
 277         SetColor(COLOR_RED);
 278         glVertex2i(-boxW/8, -boxH/16);
 279         SetColor(COLOR_BLUE);
 280         glVertex2i(boxW/8, -boxH/16);
 281
 282         SetColor(COLOR_GREEN);
 283         glVertex2i(-boxW/4, boxH/4);
 284         SetColor(COLOR_RED);
 285         glVertex2i(-boxW/8, boxH/16);
 286         SetColor(COLOR_BLUE);
 287         glVertex2i(boxW/8, boxH/16);
 288     glEnd();
 289
 290     glBegin(GL_TRIANGLES);
 291         glVertex2i(0, 0);
 292         glVertex2i(-100, 100);
 293     glEnd();
 294 }
 295
 296 static void TriangleStrip(void)
 297 {
 298
 299     glBegin(GL_TRIANGLE_STRIP);
 300         SetColor(COLOR_GREEN);
 301         glVertex2i(-boxW/4, -boxH/4);
 302         SetColor(COLOR_RED);
 303         glVertex2i(-boxW/4, boxH/4);
 304         SetColor(COLOR_BLUE);
 305         glVertex2i(0, -boxH/4);
 306         SetColor(COLOR_WHITE);
 307         glVertex2i(0, boxH/4);
 308         SetColor(COLOR_CYAN);
 309         glVertex2i(boxW/4, -boxH/4);
 310         SetColor(COLOR_YELLOW);
 311         glVertex2i(boxW/4, boxH/4);
 312     glEnd();
 313
 314     glBegin(GL_TRIANGLE_STRIP);
 315         glVertex2i(0, 0);
 316         glVertex2i(-100, 100);
 317     glEnd();
 318 }
 319
 320 static void TriangleFan(void)
 321 {
 322     GLint vx[8][2];
 323     GLint x0, y0, x1, y1, x2, y2, x3, y3;
 324     GLint i;
 325
 326     y0 = -boxH/4;
 327     y1 = y0 + boxH/2/3;
 328     y2 = y1 + boxH/2/3;
 329     y3 = boxH/4;
 330     x0 = -boxW/4;
 331     x1 = x0 + boxW/2/3;
 332     x2 = x1 + boxW/2/3;
 333     x3 = boxW/4;
 334
 335     vx[0][0] = x0; vx[0][1] = y1;
 336     vx[1][0] = x0; vx[1][1] = y2;
 337     vx[2][0] = x1; vx[2][1] = y3;
 338     vx[3][0] = x2; vx[3][1] = y3;
 339     vx[4][0] = x3; vx[4][1] = y2;
 340     vx[5][0] = x3; vx[5][1] = y1;
 341     vx[6][0] = x2; vx[6][1] = y0;
 342     vx[7][0] = x1; vx[7][1] = y0;
 343
 344     glBegin(GL_TRIANGLE_FAN);
 345         SetColor(COLOR_WHITE);
 346         glVertex2i(0, 0);
 347         for (i = 0; i < 8; i++) {
 348             SetColor(COLOR_WHITE-i);
 349             glVertex2iv(vx[i]);
 350         }
 351     glEnd();
 352
 353     glBegin(GL_TRIANGLE_FAN);
 354         glVertex2i(0, 0);
 355         glVertex2i(-100, 100);
 356     glEnd();
 357 }
 358
 359 static void Rect(void)
 360 {
 361
 362     SetColor(COLOR_GREEN);
 363     glRecti(-boxW/4, -boxH/4, boxW/4, boxH/4);
 364 }
 365
 366 static void PolygonFunc(void)
 367 {
 368     GLint vx[8][2];
 369     GLint x0, y0, x1, y1, x2, y2, x3, y3;
 370     GLint i;
 371
 372     y0 = -boxH/4;
 373     y1 = y0 + boxH/2/3;
 374     y2 = y1 + boxH/2/3;
 375     y3 = boxH/4;
 376     x0 = -boxW/4;
 377     x1 = x0 + boxW/2/3;
 378     x2 = x1 + boxW/2/3;
 379     x3 = boxW/4;
 380
 381     vx[0][0] = x0; vx[0][1] = y1;
 382     vx[1][0] = x0; vx[1][1] = y2;
 383     vx[2][0] = x1; vx[2][1] = y3;
 384     vx[3][0] = x2; vx[3][1] = y3;
 385     vx[4][0] = x3; vx[4][1] = y2;
 386     vx[5][0] = x3; vx[5][1] = y1;
 387     vx[6][0] = x2; vx[6][1] = y0;
 388     vx[7][0] = x1; vx[7][1] = y0;
 389
 390     glBegin(GL_POLYGON);
 391         for (i = 0; i < 8; i++) {
 392             SetColor(COLOR_WHITE-i);
 393             glVertex2iv(vx[i]);
 394         }
 395     glEnd();
 396
 397     glBegin(GL_POLYGON);
 398         glVertex2i(0, 0);
 399         glVertex2i(100, 100);
 400     glEnd();
 401 }
 402
 403 static void Quads(void)
 404 {
 405
 406     glBegin(GL_QUADS);
 407         SetColor(COLOR_GREEN);
 408         glVertex2i(-boxW/4, -boxH/4);
 409         SetColor(COLOR_RED);
 410         glVertex2i(-boxW/8, -boxH/16);
 411         SetColor(COLOR_BLUE);
 412         glVertex2i(boxW/8, -boxH/16);
 413         SetColor(COLOR_WHITE);
 414         glVertex2i(boxW/4, -boxH/4);
 415
 416         SetColor(COLOR_GREEN);
 417         glVertex2i(-boxW/4, boxH/4);
 418         SetColor(COLOR_RED);
 419         glVertex2i(-boxW/8, boxH/16);
 420         SetColor(COLOR_BLUE);
 421         glVertex2i(boxW/8, boxH/16);
 422         SetColor(COLOR_WHITE);
 423         glVertex2i(boxW/4, boxH/4);
 424     glEnd();
 425
 426     glBegin(GL_QUADS);
 427         glVertex2i(0, 0);
 428         glVertex2i(100, 100);
 429         glVertex2i(-100, 100);
 430     glEnd();
 431 }
 432
 433 static void QuadStrip(void)
 434 {
 435
 436     glBegin(GL_QUAD_STRIP);
 437         SetColor(COLOR_GREEN);
 438         glVertex2i(-boxW/4, -boxH/4);
 439         SetColor(COLOR_RED);
 440         glVertex2i(-boxW/4, boxH/4);
 441         SetColor(COLOR_BLUE);
 442         glVertex2i(0, -boxH/4);
 443         SetColor(COLOR_WHITE);
 444         glVertex2i(0, boxH/4);
 445         SetColor(COLOR_CYAN);
 446         glVertex2i(boxW/4, -boxH/4);
 447         SetColor(COLOR_YELLOW);
 448         glVertex2i(boxW/4, boxH/4);
 449     glEnd();
 450
 451     glBegin(GL_QUAD_STRIP);
 452         glVertex2i(0, 0);
 453         glVertex2i(100, 100);
 454         glVertex2i(-100, 100);
 455     glEnd();
 456 }
 457
 458 static void Draw(EGLDisplay dpy, EGLSurface surf)
 459 {
 460
 461     glViewport(0, 0, windW, windH);
 462     glDisable(GL_SCISSOR_TEST);
 463
 464     glPushAttrib(GL_COLOR_BUFFER_BIT);
 465
 466     glColorMask(1, 1, 1, 1);
 467     glIndexMask(~0);
 468
 469     glClearColor(0.0, 0.0, 0.0, 0.0);
 470     glClear(GL_COLOR_BUFFER_BIT);
 471
 472     glPopAttrib();
 473
 474     if (mode1) {
 475         glShadeModel(GL_SMOOTH);
 476     } else {
 477         glShadeModel(GL_FLAT);
 478     }
 479
 480     if (mode2) {
 481         glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
 482     } else {
 483         glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
 484     }
 485
 486     Viewport(0, 0); Point();
 487     Viewport(0, 1); Lines();
 488     Viewport(0, 2); LineStrip();
 489     Viewport(0, 3); LineLoop();
 490
 491     Viewport(1, 0); Bitmap();
 492
 493     Viewport(1, 1); TriangleFan();
 494     Viewport(1, 2); Triangles();
 495     Viewport(1, 3); TriangleStrip();
 496
 497     Viewport(2, 0); Rect();
 498     Viewport(2, 1); PolygonFunc();
 499     Viewport(2, 2); Quads();
 500     Viewport(2, 3); QuadStrip();
 501
 502     glFlush();
 503
 504     if (doubleBuffer) {
 505         eglSwapBuffers(dpy, surf);
 506     }
 507 }
 508
 509 static void
 510 write_ppm(const char *filename, const GLubyte *buffer, int width, int height)
 511 {
 512    const int binary = 0;
 513    FILE *f = fopen( filename, "w" );
 514    if (f) {
 515       int i, x, y;
 516       const GLubyte *ptr = buffer;
 517       if (binary) {
 518          fprintf(f,"P6\n");
 519          fprintf(f,"# ppm-file created by osdemo.c\n");
 520          fprintf(f,"%i %i\n", width,height);
 521          fprintf(f,"255\n");
 522          fclose(f);
 523          f = fopen( filename, "ab" );  /* reopen in binary append mode */
 524          for (y=height-1; y>=0; y--) {
 525             for (x=0; x<width; x++) {
 526                i = (y*width + x) * 4;
 527                fputc(ptr[i], f);   /* write red */
 528                fputc(ptr[i+1], f); /* write green */
 529                fputc(ptr[i+2], f); /* write blue */
 530             }
 531          }
 532       }
 533       else {
 534          /*ASCII*/
 535          int counter = 0;
 536          fprintf(f,"P3\n");
 537          fprintf(f,"# ascii ppm file created by osdemo.c\n");
 538          fprintf(f,"%i %i\n", width, height);
 539          fprintf(f,"255\n");
 540          for (y=height-1; y>=0; y--) {
 541             for (x=0; x<width; x++) {
 542                i = (y*width + x) * 4;
 543                fprintf(f, " %3d %3d %3d", ptr[i], ptr[i+1], ptr[i+2]);
 544                counter++;
 545                if (counter % 5 == 0)
 546                   fprintf(f, "\n");
 547             }
 548          }
 549       }
 550       fclose(f);
 551    }
 552 }
 553
 554 #include "../src/egl/main/egldisplay.h"
 555
 556 typedef struct fb_display
 557 {
 558    _EGLDisplay Base;  /* base class/object */
 559    void *pFB;
 560 } fbDisplay;
 561
 562
 563 int
 564 main(int argc, char *argv[])
 565 {
 566    int maj, min;
 567    EGLContext ctx;
 568    EGLSurface screen_surf;
 569    EGLConfig configs[10];
 570    EGLScreenMESA screen;
 571    EGLModeMESA mode;
 572    EGLint numConfigs, count;
 573    EGLBoolean b;
 574    const EGLint screenAttribs[] = {
 575       EGL_WIDTH, 1024,
 576       EGL_HEIGHT, 768,
 577       EGL_NONE
 578    };
 579
 580    /*
 581    EGLDisplay d = eglGetDisplay(EGL_DEFAULT_DISPLAY);
 582    */
 583    EGLDisplay d = eglGetDisplay("!EGL_i915");
 584    assert(d);
 585
 586    if (!eglInitialize(d, &maj, &min)) {
 587       printf("demo: eglInitialize failed\n");
 588       exit(1);
 589    }
 590
 591    printf("EGL version = %d.%d\n", maj, min);
 592    printf("EGL_VENDOR = %s\n", eglQueryString(d, EGL_VENDOR));
 593
 594    eglGetConfigs(d, configs, 10, &numConfigs);
 595    eglGetScreensMESA(d, &screen, 1, &count);
 596    eglGetModesMESA(d, screen, &mode, 1, &count);
 597
 598    ctx = eglCreateContext(d, configs[0], EGL_NO_CONTEXT, NULL);
 599    if (ctx == EGL_NO_CONTEXT) {
 600       printf("failed to create context\n");
 601       return 0;
 602    }
 603
 604    screen_surf = eglCreateScreenSurfaceMESA(d, configs[0], screenAttribs);
 605    if (screen_surf == EGL_NO_SURFACE) {
 606       printf("failed to create screen surface\n");
 607       return 0;
 608    }
 609
 610    eglShowScreenSurfaceMESA(d, screen, screen_surf, mode);
 611
 612    b = eglMakeCurrent(d, screen_surf, screen_surf, ctx);
 613    if (!b) {
 614       printf("make current failed\n");
 615       return 0;
 616    }
 617    glViewport(0, 0, 1024, 768);
 618
 619
 620    Init();
 621    Reshape(1024, 768);
 622
 623    glDrawBuffer( GL_FRONT );
 624    glClearColor( 0, 1.0, 0, 1);
 625
 626    glClear( GL_COLOR_BUFFER_BIT );
 627
 628    doubleBuffer = 1;
 629    glDrawBuffer( GL_BACK );
 630
 631    Draw(d, screen_surf);
 632
 633    write_ppm("dump.ppm", ((struct fb_display *)_eglLookupDisplay(d))->pFB, 1024, 768);
 634
 635    eglDestroySurface(d, screen_surf);
 636    eglDestroyContext(d, ctx);
 637    eglTerminate(d);
 638
 639    return 0;
 640 }