1// Copyright 2017 The Fuchsia Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#include <dirent.h> 6#include <errno.h> 7#include <fcntl.h> 8#include <stdio.h> 9#include <stdlib.h> 10#include <string.h> 11#include <unistd.h> 12 13#include <zircon/process.h> 14#include <zircon/syscalls.h> 15#include <zircon/types.h> 16 17#include <gfx/gfx.h> 18 19#include <lib/framebuffer/framebuffer.h> 20 21int main(int argc, char* argv[]) { 22 const char* err; 23 zx_status_t status = fb_bind(true, &err); 24 if (status != ZX_OK) { 25 printf("failed to open framebuffer: %d (%s)\n", status, err); 26 return -1; 27 } 28 uint32_t width; 29 uint32_t height; 30 uint32_t stride; 31 zx_pixel_format_t format; 32 33 fb_get_config(&width, &height, &stride, &format); 34 35 size_t size = stride * ZX_PIXEL_FORMAT_BYTES(format) * height; 36 uintptr_t fbo; 37 status = zx_vmar_map(zx_vmar_root_self(), 38 ZX_VM_PERM_READ | ZX_VM_PERM_WRITE, 39 0, fb_get_single_buffer(), 0, size, &fbo); 40 if (status < 0) { 41 printf("failed to map fb (%d)\n", status); 42 return -1; 43 } 44 45 gfx_surface* gfx = gfx_create_surface((void*)fbo, width, height, stride, 46 format, GFX_FLAG_FLUSH_CPU_CACHE); 47 if (!gfx) { 48 printf("failed to create gfx surface\n"); 49 return -1; 50 } 51 gfx_fillrect(gfx, 0, 0, gfx->width, gfx->height, 0xffffffff); 52 gfx_flush(gfx); 53 54 double a,b, dx, dy, mag, c, ci; 55 uint32_t color,iter,x,y; 56 57 bool rotate = (gfx->height > gfx->width); 58 59 dx= 3.0/((double)gfx->width); 60 dy= 3.0/((double)gfx->height); 61 c = -2.0; 62 ci = -1.5; 63 for (y = 0; y < gfx->height; y++) { 64 if (rotate) { 65 ci = -1.5; 66 } else { 67 c = -2.0; 68 } 69 for (x = 0; x < gfx->width; x++) { 70 a=0; 71 b=0; 72 mag=0; 73 iter = 0; 74 while ((mag < 4.0) && (iter < 200) ){ 75 double a1; 76 a1 = a*a - b*b + c; 77 b = 2.0 * a * b + ci; 78 a=a1; 79 mag = a*a + b*b; 80 iter++; 81 } 82 if (rotate) { 83 ci = ci + dx; 84 } else { 85 c = c + dx; 86 } 87 if (iter == 200) { 88 color = 0; 89 } else { 90 color = 0x231AF9 * iter; 91 } 92 color= color | 0xff000000; 93 gfx_putpixel(gfx, x, y, color); 94 95 } 96 if ((y%50) == 0) 97 gfx_flush(gfx); 98 if (rotate) { 99 c = c + dy; 100 } else { 101 ci = ci + dy; 102 } 103 } 104 gfx_flush(gfx); 105 zx_nanosleep(zx_deadline_after(ZX_SEC(10))); 106 107 gfx_surface_destroy(gfx); 108 fb_release(); 109} 110