SDL_Rect是Simple DirectMedia Layer(SDL)库中的一个结构体,用于表示矩形的位置和大小。它包含四个整型成员变量:x、y、w和h,分别表示矩形的左上角顶点的x坐标、y坐标,以及矩形的宽度和高度。 使用SDL_Rect可以创建多个矩形,每个矩形可以具有不同的位置和大小。以下是一个示例代码: 代码语言:txt 复制 #
所写字体的宽和高37drect.h=text->h;38SDL_BlitSurface(text, NULL, screen, &drect);//把目标对象快速转化39SDL_UpdateRect(screen,0,0,0,0);//更新整个屏幕40SDL_FreeSurface(text);//释放写有文字的surface41SDL_Delay(5000);//让屏幕停留5秒钟的时间4243return0;44} SDL做文字显示在编译链接的时...
SDL_UpdateTexture(texture, NULL, video_buf, video_width); // 设置显示区域 rect.x = 0; // 区域左上角x坐标 rect.y = 0; // 区域左上角y坐标 float w_ratio = win_width * 1.0 /video_width; // 宽度比例 float h_ratio = win_height * 1.0 /video_height; // 高度比例 // 计算显示区...
IDirect3DDevice9_CreateTexture() SDL_UpdateTexture()调用了如下Direc3D的API: IDirect3DTexture9_LockRect() memcpy():这个不算D3D的,用于拷贝像素数据。 IDirect3DTexture9_UnlockRect() SDL_RenderCopy()调用了如下Direc3D的API: IDirect3DDevice9_BeginScene() IDirect3DDevice9_SetRenderState() IDirect3DDevi...
constUint8*Vplane,int Vpitch);int(*LockTexture)(SDL_Renderer*renderer,SDL_Texture*texture,constSDL_Rect*rect,void**pixels,int*pitch);void(*UnlockTexture)(SDL_Renderer*renderer,SDL_Texture*texture);int(*SetRenderTarget)(SDL_Renderer*renderer,SDL_Texture*texture);int(*UpdateViewport)(SDL_Renderer*...
SDL_UpdateRect(screen,x,y,1,1); } int main(){ SDL_Surface *screen; Uint32 color; if(SDL_Init(SDL_INIT_VIDEO) < 0){ fprintf(stderr,"can not init SDL: %s\n",SDL_GetError()); exit(1); } screen = SDL_SetVideoMode(640,480,16,SDL_SWSURFACE); /* 640*480*16 */ ...
Uint32lastTick,curTick;inttick_interval=40;inttime_slice=1;inttime_left;intcount;structhz_info{ unsignedcharword[2];unsignedcharcode[4];intindex;intx,y;inttime;intkill;SDL_Surface*Sprite;SDL_RectSrcMap;SDL_RectDesMap;}hz[4];/*---*/ intmain()
int SDL_UpdateTexture(SDL_Texture * texture, const SDL_Rect * rect, const void *pixels, int pitch); 示例代码 #include <stdio.h> #include <string.h> #include <stdlib.h> #include <SDL.h> #define REFRESH_EVENT (SDL_USEREVENT + 1) ...
SDL_UpdateRect(screen, 0, 0, 640, 480); } // Entry point int main(int argc, char *argv[]) { // 初始化SDL子系统,这里只对视频进行初始化 if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) { fprintf(stderr, "Unable to init SDL: %s\n", SDL_GetError()); ...
//源码#include "SDL2/SDL.h"#include<cstdio>#include<vector>#include "SDL_anigif.h"int main(int argc,char**argv){SDL_Event event;bool g_bRunning = true;int currentFrame = 0;SDL_Rect destRect={0,0,0,0};SDL_Init(SDL_INIT_EVERYTHING);SDL_Window*gWin = SDL_CreateWindow("gif test...