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#1SDL_RenderReadPixels - SDL Wiki
Read pixels from the current rendering target to an array of pixels. Syntax. int SDL_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect, Uint32 ...
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#2SDL_RenderReadPixels returns a black rectangle? - Stack ...
RenderReadPixels reads data you previously drawn via other SDL renderer functions, or sometimes with underlying graphics API (d3d/opengl/vulkan) ...
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#3Golang SDL_RenderReadPixels Examples
Golang SDL_RenderReadPixels - 3 examples found. These are the top rated real world Golang examples of C.SDL_RenderReadPixels extracted from open source ...
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#4c++ - SDL_RenderReadPixels返回黑色矩形吗？ - IT工具网
c++ - SDL_RenderReadPixels返回黑色矩形吗？ 原文 标签 c++ sdl sdl-2. 我正在尝试使用SDL2在Windows中拍摄整个桌面的屏幕截图。但是，查看生成的 .bmp 文件时，它是 ...
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#5sdl2-docs/SDL_RenderReadPixels.md at master - GitHub
SDL_RenderReadPixels. Use this function to read pixels from the current rendering target. 使用该函数可以从当前渲染目标中读取像素数据。
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#6reading pixels from a TARGET texture - [email protected]
absolutely not use SDL_RenderReadPixels(), ever, for anything other than ... result = SDL_RenderReadPixels(renderer, &dst, format, pixels, pitch);
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#7sdl2_sys::render::SDL_RenderReadPixels - Rust
pub unsafe extern fn SDL_RenderReadPixels(renderer: *mut SDL_Renderer, rect: *const SDL_Rect, format: uint32_t, pixels: *mut c_void, pitch: c_int) -> c_int ...
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#8Saving Screenshots in SDL2 - Gigi Labs
SDL2 provides the SDL_RenderReadPixels() function, which can be used to read pixel data back from video memory.
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#9Where can I get correct pitch parameter for ...
I have a texture created with SDL_TEXTUREACCESS_TARGET access and I want to get all its pixels with SDL_RenderReadPixels() function.
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#10Grafika komputerowa: SDL_RenderReadPixels
int SDL_RenderReadPixels(SDL_Renderer* renderer, const SDL_Rect* rect, Uint32 format, void* pixels, int pitch). Parametry funkcji ...
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#11Question : Where can I get correct pitch parameter ... - TitanWolf
I have a texture created with SDL_TEXTUREACCESS_TARGET access and I want to get all its pixels with SDL_RenderReadPixels() function.
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#12fermium::SDL_RenderReadPixels - Rust - Docs.rs
API documentation for the Rust `SDL_RenderReadPixels` fn in crate `fermium`. ... pub unsafe extern "C" fn SDL_RenderReadPixels( renderer: *mut SDL_Renderer,
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#13SDL2中的SDL_RenderReadPixels函数在哪里可以得到正确的 ...
我有一个使用 SDL_TEXTUREACCESS_TARGET 访问创建的纹理，我想用 SDL_RenderReadPixels() 函数获取所有的像素。 其中一个function参数是 pitch ，我不知道从哪里可以 ...
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#14【C++】為什麼我不能在SDL2中繪製紋理？ - 程式人生
問題在於，當我訪問畫素資料時，SDL_RenderReadPixels（）表示間距為0，所有畫素資料均為0。同樣，當我嘗試繪製新紋理時，它也會變成黑色。
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#15SDL2 C++ Taking a screenshot | Newbedev
For hardware rendering you should use the method SDL_RenderReadPixels() . To save the screenshot you would need a code like that:
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#16SDL2: test/testrendertarget.c | Fossies
... NULL); 122 SDL_RenderCopy(s->renderer, A, NULL, NULL); 123 SDL_RenderReadPixels(s->renderer, NULL, SDL_PIXELFORMAT_ARGB8888, &P, ...
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#17c++ - 为什么我不能在SDL2中绘制纹理？ - 摸鱼
问题在于，当我访问像素数据时，SDL_RenderReadPixels（）表示间距为0，所有像素数据均为0。同样，当我尝试绘制新纹理时，它也会变成黑色。
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#18SDL_RenderReadPixels
int SDL_RenderReadPixels(SDL_Renderer* renderer, const SDL_Rect* rect, Uint32 format, void* pixels, int pitch). 引数. renderer, レンダリングコンテキスト.
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#19sdl renderer window texture surface更新關係 - 台部落
所以，SDL_RenderReadPixels除非是執行單詞的screenshot抓屏操作纔可用。否則太耗時，沒法用。 以上. .
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#20Why cant I draw to a texture in SDL2? - TipsForDev
For some reason you assume that SDL_RenderReadPixels allocates pixels array and returns resulting pitch; it does neither. Calling side passes pixels array ...
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#21arsa: include/SDL/SDL_render.h File Reference - SAROS World
DECLSPEC int SDLCALL · SDL_RenderReadPixels (SDL_Renderer *renderer, const SDL_Rect *rect, Uint32 format, void *pixels, int pitch).
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#22C# 实现SDL2 视频播放窗口截图和添加字幕 - 编程宝库
SDL_RenderReadPixels (renderer, ref destrect, SDL.SDL_PIXELFORMAT_ARGB8888, surface->pixels, surface->pitch); //保存图片int i = SDL.
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#23SDL2 - Problems creating texture from surface (Screenshot)
NULL) { if (SDL_RenderReadPixels(mSDLRenderer, NULL, SDL_PIXELFORMAT_ARGB8888, sshot->pixels, sshot->pitch) == 0) { SDL_Surface *saveSurface ...
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#24SDL2 C++截圖- IT閱讀
對於硬體渲染，應使用 SDL_RenderReadPixels() 方法。要儲存螢幕截圖，您需要這樣的程式碼: SDL_Surface *sshot = SDL_CreateRGBSurface(0, w, h, 32, ...
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#25SDL2 C++ Taking a screenshot - OStack|知识分享社区
For hardware rendering you should use the method SDL_RenderReadPixels() . To save the screenshot you would need a code like that:
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#26SDL_RenderReadPixels возвращает черный прямоугольник?
SDL_RenderReadPixels возвращает черный прямоугольник? Я пытаюсь использовать SDL2, чтобы сделать снимок экрана всего рабочего стола в windows.
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#27c + + SDL2 TTF文本会随机消失 - 错说
... 32, format) }; SDL_RenderReadPixels(r, NULL, format, sur->pixels, sur->pitch); SDL_SaveBMP(sur, name); SDL_FreeSurface(sur); std::cout ...
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#28SDL2 r,g,b et RenderReadPixels() - OpenClassrooms
SDL_RenderReadPixels (render,&rect,SDL_PIXELFORMAT_RGBA8888,&value, 32 * 900 );. // SDL_GetRGBA(value,SDL_PIXELFORMAT_RGBA8888,&r,&v,&b,&a); ...
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#29关于C#：SDL2-从表面创建纹理时出现问题(屏幕截图) | 码农家园
我能够跟踪问题SDL_RenderReadPixels，而不是传递NULL rect而不是传递rect似乎已经解决了问题。简化版本的代码可以在不进行错误检查的情况下运行， ...
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#30SDL2 getting pixel data from a texture - Temple of The ...
Never mind the fact that people have said that SDL_RenderReadPixels() has been buggy and only gets pixels from the window, even if you set ...
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#31SDL_RenderReadPixels返回黑色矩形吗？ - 堆栈内存溢出
我正在尝试使用SDL 在Windows中拍摄整个桌面的屏幕截图。 但是，当查看生成的.bmp文件时，它是完全黑色的。 任何帮助，将不胜感激。
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#32SDL2 C++ Taking a screenshot - StackGuides
For hardware rendering you should use the method SDL_RenderReadPixels() . To save the screenshot you would need a code like that:
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#33pycsdl2 Documentation - Read the Docs
SDL_RenderReadPixels (renderer, rect, format, pixels, pitch). Read pixels from the current rendering target. Parameters.
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#34ENDER SHEN / Splashkit2020T3 / 9aecefdde47 - Bitbucket
SDL_RenderReadPixels (src_renderer, nullptr, SDL_PIXELFORMAT_RGBA8888, pixels, 4 * w);. 258. +. _sk_get_pixels_from_renderer(src_renderer, 0, 0, w, h, ...
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#35[Solved] C++ How to draw pixels in SDL 2.0? - Code Redirect
SDL_RenderPresent(renderer);. This should draw a pixel on the middle of screen. To read a pixel is a little more complicated. You can use SDL_RenderReadPixels() ...
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#36How to draw pixels in SDL 2.0? - py4u
SDL_RenderPresent(renderer);. This should draw a pixel on the middle of screen. To read a pixel is a little more complicated. You can use SDL_RenderReadPixels() ...
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#37SDL2 Texture Access | C++ Community
Nun würde ich gerne die SDL_RenderReadPixels Funktion nutzen. int result = 0; SDL_Rect * pPixelPos = new SDL_Rect; pPixelPos->x = 0; ...
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#38sdl renderer window texture surface更新关系_miaoweijun的专栏
所以当你利用sdl_savebmp保存下来是黑屏。只能是利用SDL_RenderReadPixels来读取当前window的现状。但是不知道这个速度能有多快，因为文档中有句话 /!
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#39将SDL 纹理保存到文件
Amask); if (s) { SDL_SetRenderTarget(renderer, tmp_texture); SDL_RenderReadPixels(renderer, NULL, s->format->format, s->pixels, s->pitch); IMG_SavePNG(s, ...
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#40C# SDL2.SDL類代碼示例- 純淨天空
SDL_RenderReadPixels (Renderer, ref rect, format, pixels, pitch) != 0) { throw new Exception("SDL_RenderReadPixels()", new Exception(SDL.
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#41SDL在iOS上保存截图| 经验摘录
... 640, 480, 32, 0, 0, 0, 0) SDL_SetRenderTarget(renderer, texture) SDL_RenderReadPixels(renderer, nil, Uint32(SDL_PIXELFORMAT_ARGB8888), ...
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#42Save SDL Texture to file - EasySaveCode.com
SDL_RenderReadPixels (renderer, NULL, surface->format->format, surface->pixels, surface->pitch);. 9. IMG_SavePNG(surface, file_name);.
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#43C# 实现SDL2进行视频播放窗口截图和字幕添加
SDL_RenderReadPixels (renderer, ref destrect, SDL.SDL_PIXELFORMAT_ARGB8888, surface->pixels, surface->pitch); //保存图片int i = SDL.
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#44SDL2 访问渲染帧缓冲区 - 小空笔记
... &rect); SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255); // Access framebuffer: method 1 SDL_RenderReadPixels(renderer, nullptr, ...
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#45zenilib/jni/external/sdl/src/render/SDL_render.c Source File
1748 SDL_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,. 1749 Uint32 format, void * pixels, int pitch).
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#46c++ — Comment dessiner des pixels en SDL 2.0? - it-swarm-fr ...
Lire un pixel est un peu plus compliqué. Vous pouvez utiliser SDL_RenderReadPixels() , il est fait pour lire une zone, mais vous pouvez toujours spécifier une ...
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#47SDL2::render - SDL 2D Rendering Functions - metacpan.org
SDL_RenderReadPixels (. $renderer ,. SDL2::Rect->new( { x => 0, y => 0, w => 640, h => 480 } ),. SDL_PIXELFORMAT_RGB888,. $surface ->pixels, $surface ->pitch.
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#48pascal : SDL2で表面/テクスチャからピクセルのRGBA値を ...
SDL_RenderReadPixels は、サーフェスからピクセルを読み取り、それらをターゲットテクスチャにコピーします。それだけです。それ自体では、ピクセル（ ...
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#49hercules/SDL: changeset 3427:36cf454ba065 - Icculus.org
Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested. src/video/SDL_renderer_sw.c · file | annotate | diff | ...
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#50SDL сохраняют снимок экрана на iOS - Answer-ID
rawValue)) let screenShot = SDL_CreateRGBSurface(0, 640, 480, 32, 0, 0, 0, 0) SDL_SetRenderTarget(renderer, texture) SDL_RenderReadPixels(renderer, nil, ...
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#51CLion, MinGW e SDL2: Processo terminato con codice di uscita
SDL_RenderReadPixels restituisce un rettangolo nero? ribaltare una superficie verticalmente in SDL2 · CLion, MinGW e SDL2: Processo terminato con codice di ...
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#52SDL API — pysdl2-cffi 0.7.0 documentation - PythonHosted.org
int SDL_RenderReadPixels(SDL_Renderer *, SDL_Rect const *, uint32_t, void *, int). Read pixels from the current rendering target.
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#53C# 使用SDL2进行视频播放窗口截图和字幕添加_纸上得来终觉浅
SDL_RenderReadPixels (renderer, ref destrect, SDL.SDL_PIXELFORMAT_ARGB8888, surface->pixels, surface->pitch); //保存图片 int i = SDL.
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#54Sdl Сохранить Скриншот На Ios - progi.pro
SDL_RenderReadPixels (renderer, nil, Uint32(SDL_PIXELFORMAT_ARGB8888), screenShot?.pointee.pixels, (screenShot?.pointee.pitch)!) ... Но image.png не был сохранен.
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#55SDL сохранить скриншот на iOS – 2 Ответа - overcoder
rawValue)) let screenShot = SDL_CreateRGBSurface(0, 640, 480, 32, 0, 0, 0, 0) SDL_SetRenderTarget(renderer, texture) SDL_RenderReadPixels(renderer, nil, ...
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#56SDL2 でスクリーンショットを取る | Sirius のブログ - Sirius10
SDL2 でウィンドウイメージを画像に保存するには、データコピー用のサーフェスを準備して、SDL_RenderReadPixels() 関数でウィンドウイメージのコピー ...
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#57CVS log for pkgsrc/devel/SDL2/patches/Attic/patch ...
metal: SDL_RenderReadPixels on macOS synchronizes the render target's texture data if it's managed, before reading from it. * fix bug #4362 - SDL_syswm.h ...
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#58A library for high-performance, modern 2D graphics with SDL ...
... GPU_UpdateImageBytes() SDL_RenderSetClipRect() : GPU_SetClip() or GPU_SetClipRect() SDL_RenderReadPixels() : GPU_CopySurfaceFromTarget() ...
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#59~rabbits/uxn: Removed lock/unlock for screenshot - sourcehut git
... &w, &h); SDL_Surface *surface = SDL_CreateRGBSurfaceWithFormat(0, w, h, 32, format); - SDL_LockSurface(surface); SDL_RenderReadPixels(gRenderer, NULL, ...
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#60Modification pixels par pixels - Utiliser la SDL en langage C ...
int SDL_RenderReadPixels(SDL_Renderer* renderer, const SDL_Rect* rect, Uint32 format, void* pixels, int pitch).
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#61SDL2 C ++ Scattare uno screenshot - Linguaggio C++
Per il rendering dell'hardware dovresti utilizzare il metodo SDL_RenderReadPixels() . Per salvare lo screenshot avrai bisogno di un codice del genere:
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#62Sdlpp - C++ wrapper for SDL2 - Open Source Libs
readPixels, SDL_RenderReadPixels. setClipRect, SDL_RenderSetClipRect. setLogicalSize, SDL_RenderSetLogicalSize. setScale, SDL_RenderSetScale.
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#63Questions for tag sdl - Quabr
SDL_RenderReadPixels returns a black rectangle? Can't draw a simple triangle using SDL + OpenGL + OSX · SDL2 iOS multitouch second finger down not detected.
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#64mika314/sdlpp - githubmemory
readPixels, SDL_RenderReadPixels. setClipRect, SDL_RenderSetClipRect. setLogicalSize, SDL_RenderSetLogicalSize. setScale, SDL_RenderSetScale.
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#65SDL2 - 读取碰撞检测像素
我注意到函数 SDL_RenderReadPixels ，但我似乎无法使它工作： ... 32 = 28800 w = SDL_RenderReadPixels(map->renderer, NULL, 0, pixels, 28800);.
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#66c++ — Como desenhar pixels no SDL 2.0? - ti-enxame.com
Isso deve desenhar um pixel no meio da tela. Ler um pixel é um pouco mais complicado. Você pode usar SDL_RenderReadPixels() , ele é feito para ler uma área, mas ...
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#67C# 实现SDL2进行视频播放窗口截图和字幕添加 - html中文网
SDL_RenderReadPixels (renderer, ref destrect, SDL.SDL_PIXELFORMAT_ARGB8888, surface->pixels, surface->pitch); //保存图片int i = SDL.
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#68C# Use SDL2 to take screenshots of video playback window ...
SDL_RenderReadPixels (renderer, ref destrect, SDL.SDL_PIXELFORMAT_ARGB8888, surface->pixels, surface->pitch); //save Picture int i = SDL.
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#69我如何读取SDL2中的像素信息 - 码农俱乐部
最佳答案：. 你可能想要 SDL_RenderDrawPoint() 和 SDL_RenderReadPixels() 。 但请记住，通常不建议使用单独的像素。画线、画图像等有 ...
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#70sdlpp - Freesoft.dev
readPixels, SDL_RenderReadPixels. setClipRect, SDL_RenderSetClipRect. setLogicalSize, SDL_RenderSetLogicalSize. setScale, SDL_RenderSetScale.
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#71How do I read the RGBA values of a pixel from a surface or ...
with 'SDL_RenderReadPixels()' you may get the Pixels from a Texture w/o creating a Surface in Your Code, see:
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#72ffplay on SDL2 bis - Karthi softek
SDL_RenderReadPixels (r, rect, fmt, pixels, pitch); Q: Because the video aspect ratio is different from the window width and height, and black borders are ...
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#73SDL2 C++ 스크린 샷 찍기 - IT 툴 넷
하드웨어 렌더링의 경우 SDL_RenderReadPixels() 메소드를 사용해야합니다. 스크린 샷을 저장하려면 다음과 같은 코드가 필요합니다.
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#74C SDL2-读取用于碰撞检测的像素_C_Sdl 2 - 魔琴编程网
... w = SDL_RenderReadPixels(map->renderer, NULL, 0, pixels, 28800); 我总是遇到一个分割错误。现在，我不完全确定这是否是实现我正在尝试的目标的最简单的方法。
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#75SDL_RenderReadPixels returns a black rectangle? - c++
SDL_RenderReadPixels returns a black rectangle? - c++ · I'm trying to use SDL2 to take a screenshot of the entire desktop in windows. However, when looking at ...
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#76Salve SDL textura para arquivo - CoreDump.biz
O próximo passo é o mesmo que em seu código - use SDL_RenderReadPixels com formato de cor correta. Quando você tem isso, você pode simplesmente salvar com ...
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#77Sdl surface rect
... SDL_LockTexture SDL_RenderCopy SDL_RenderDrawRect SDL_RenderDrawRects SDL_RenderReadPixels. SDL_GetClipRect. Get the clipping rectangle for a surface.
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#78Pascal 使用SDL2从表面/纹理读取像素的RGBA值？ - Debug001
SDL_RenderReadPixels 将从曲面读取像素并将其复制到目标纹理上，仅此而已。它本身不会给我一个像素的RGBA值（或者SDL_RendereAdPixels中的矩形）。你错了。它将值写入
sdl_renderreadpixels 在 コバにゃんチャンネル Youtube 的精選貼文
sdl_renderreadpixels 在 大象中醫 Youtube 的最讚貼文
sdl_renderreadpixels 在 大象中醫 Youtube 的精選貼文