Mercurial > sdl-ios-xcode
annotate README.DirectFB @ 2866:e532417a6977
Fixed SDL 1.2 compatibility problem.
The API specifies that SDL_OpenAudio() will fill out the 'desired' audio spec
with the correct samples and size set by the driver. This value is important
since it may be used by applications that size audio buffers, etc.
However, we want to allow advanced applications to call SDL_OpenAudioDevice()
which gets passed a const 'desired' parameter, and have the correct data filled
into the 'obtained' parameter, possibly allowing or not allowing format changes.
So... 'obtained' becomes the audio format the user callback is expected to use,
and we add flags to allow the application to specify which format changes are
allowed.
Note: We really need to add a way to query the 'obtained' audio spec.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sat, 13 Dec 2008 06:36:47 +0000 |
parents | e759ad5e6f43 |
children | d364ee9b9c15 |
rev | line source |
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1 SDL on DirectFB |
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2 |
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3 Supports: |
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4 |
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5 - Hardware YUV overlays |
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6 - OpenGL - software only |
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7 - 2D/3D accelerations (depends on directfb driver) |
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8 - multiple displays |
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9 - windows |
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10 |
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11 What you need: |
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12 |
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13 DirectFB 1.0.1, 1.2.x, 1.3.0 |
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14 Kernel-Framebuffer support: required: vesafb, radeonfb .... |
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15 Mesa 7.0.x - optional for OpenGL |
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16 |
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17 /etc/directfbrc |
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18 |
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19 This file should contain the following lines to make |
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20 your joystick work and avoid crashes: |
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21 ------------------------ |
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22 disable-module=joystick |
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23 disable-module=linux_input |
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24 disable-module=cle266 |
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25 disable-module=cyber5k |
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26 disable-module=x11input |
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27 ------------------------ |
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28 |
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29 To use hardware accelerated YUV-overlays for YUV-textures, use: |
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30 |
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31 export SDL_DIRECTFB_YUV_DIRECT=1 |
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32 |
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33 This is disabled by default. It will only support one |
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34 YUV texture, namely the first. Every other YUV texture will be |
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35 rendered in software. |
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36 |
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37 In addition, you may use (directfb-1.2.x) |
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38 |
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39 export SDL_DIRECTFB_YUV_UNDERLAY=1 |
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40 |
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41 to make the YUV texture an underlay. This will make the cursor to |
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42 be shown. |
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43 |
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44 OPENGL Support |
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45 ============== |
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46 |
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47 As of this writing 20070810 you need to pull Mesa from git and do the following: |
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48 |
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49 ------------------------ |
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50 cd mesa |
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51 make linux-directfb |
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52 make |
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53 |
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54 echo Installing - please enter sudo pw. |
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55 |
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56 sudo make install INSTALL_DIR=/usr/local/dfb_GL |
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57 cd src/mesa/drivers/directfb |
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58 make |
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59 sudo make install INSTALL_DIR=/usr/local/dfb_GL |
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60 ------------------------ |
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61 |
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62 To run the SDL - testprograms: |
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63 |
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64 export SDL_VIDEODRIVER=directfb |
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65 export LD_LIBRARY_PATH=/usr/local/dfb_GL/lib |
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66 export LD_PRELOAD=/usr/local/dfb_GL/libGL.so.7 |
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67 |
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68 ./testgl |