docs/README.md
author Sam Lantinga
Sun, 05 Apr 2020 08:58:47 -0700
changeset 13689 c3055b205671
parent 10811 8dd0da2a25b6
permissions -rw-r--r--
Fixed bug 5015 - SDL_RenderReadPixels on DirectX 11.1 backend seems to be broken

Konrad

It appears that I cannot use SDL_RenderReadPixels on a bound framebuffer (SDL_Texture set as render target) as it simply results in gibberish data. However, drawing that framebuffer into the default target (window surface) does render it correctly. Other backends (OpenGL, software, Direct3D) do work fine.

It looks to me like D3D11_RenderReadPixels just gets the general backbuffer and not the current render target and its backbuffer.

Here is the patch which actually fetches the current render target and its underlying ID3D11Resource which is ID3D11Texture2D.
     1 Simple DirectMedia Layer {#mainpage}
     2 ========================
     3 
     4                                   (SDL)
     5 
     6                                 Version 2.0
     7 
     8 ---
     9 http://www.libsdl.org/
    10 
    11 Simple DirectMedia Layer is a cross-platform development library designed
    12 to provide low level access to audio, keyboard, mouse, joystick, and graphics
    13 hardware via OpenGL and Direct3D. It is used by video playback software,
    14 emulators, and popular games including Valve's award winning catalog
    15 and many Humble Bundle games.
    16 
    17 SDL officially supports Windows, Mac OS X, Linux, iOS, and Android.
    18 Support for other platforms may be found in the source code.
    19 
    20 SDL is written in C, works natively with C++, and there are bindings 
    21 available for several other languages, including C# and Python.
    22 
    23 This library is distributed under the zlib license, which can be found
    24 in the file "COPYING.txt".
    25 
    26 The best way to learn how to use SDL is to check out the header files in
    27 the "include" subdirectory and the programs in the "test" subdirectory.
    28 The header files and test programs are well commented and always up to date.
    29 
    30 More documentation and FAQs are available online at [the wiki](http://wiki.libsdl.org/)
    31 
    32 - [Android](README-android.md)
    33 - [CMake](README-cmake.md)
    34 - [DirectFB](README-directfb.md)
    35 - [DynAPI](README-dynapi.md)
    36 - [Emscripten](README-emscripten.md)
    37 - [Gesture](README-gesture.md)
    38 - [Mercurial](README-hg.md)
    39 - [iOS](README-ios.md)
    40 - [Linux](README-linux.md)
    41 - [OS X](README-macosx.md)
    42 - [Native Client](README-nacl.md)
    43 - [Pandora](README-pandora.md)
    44 - [Supported Platforms](README-platforms.md)
    45 - [Porting information](README-porting.md)
    46 - [PSP](README-psp.md)
    47 - [Raspberry Pi](README-raspberrypi.md)
    48 - [Touch](README-touch.md)
    49 - [WinCE](README-wince.md)
    50 - [Windows](README-windows.md)
    51 - [WinRT](README-winrt.md)
    52 
    53 If you need help with the library, or just want to discuss SDL related
    54 issues, you can join the [developers mailing list](http://www.libsdl.org/mailing-list.php)
    55 
    56 If you want to report bugs or contribute patches, please submit them to
    57 [bugzilla](https://bugzilla.libsdl.org/)
    58 
    59 Enjoy!
    60 
    61 
    62 Sam Lantinga <mailto:slouken@libsdl.org>
    63