src/video/kmsdrm/SDL_kmsdrmopengles.h
author Sam Lantinga <slouken@libsdl.org>
Wed, 02 Aug 2017 10:22:48 -0700
changeset 11175 cbc6a8a5b701
child 11382 2c50e79b19e0
permissions -rw-r--r--
Fixed bug 3690 - SDL2 KMS/DRM render context support

Manuel

The attached patch adds support for KMS/DRM context graphics.

It builds with no problem on X86_64 GNU/Linux systems, provided the needed libraries are present, and on ARM GNU/Linux systems that have KMS/DRM support and a GLES2 implementation.
Tested on Raspberry Pi: KMS/DRM is what the Raspberry Pi will use as default in the near future, once the propietary DispmanX API by Broadcom is overtaken by open graphics stack, it's possible to boot current Raspbian system in KMS mode by adding "dtoverlay=vc4-kms-v3d" to config.txt on Raspbian's boot partition.
X86 systems use KMS right away in every current GNU/Linux system.

Simple build instructions:

$./autogen.sh
$./configure --enable-video-kmsdrm
$make
     1 /*
     2   Simple DirectMedia Layer
     3   Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
     4 
     5   This software is provided 'as-is', without any express or implied
     6   warranty.  In no event will the authors be held liable for any damages
     7   arising from the use of this software.
     8 
     9   Permission is granted to anyone to use this software for any purpose,
    10   including commercial applications, and to alter it and redistribute it
    11   freely, subject to the following restrictions:
    12 
    13   1. The origin of this software must not be misrepresented; you must not
    14      claim that you wrote the original software. If you use this software
    15      in a product, an acknowledgment in the product documentation would be
    16      appreciated but is not required.
    17   2. Altered source versions must be plainly marked as such, and must not be
    18      misrepresented as being the original software.
    19   3. This notice may not be removed or altered from any source distribution.
    20 */
    21 #include "../../SDL_internal.h"
    22 
    23 #ifndef _SDL_kmsdrmopengles_h
    24 #define _SDL_kmsdrmopengles_h
    25 
    26 #if SDL_VIDEO_DRIVER_KMSDRM && SDL_VIDEO_OPENGL_EGL
    27 
    28 #include "../SDL_sysvideo.h"
    29 #include "../SDL_egl_c.h"
    30 
    31 /* OpenGLES functions */
    32 #define KMSDRM_GLES_GetAttribute SDL_EGL_GetAttribute
    33 #define KMSDRM_GLES_GetProcAddress SDL_EGL_GetProcAddress
    34 #define KMSDRM_GLES_UnloadLibrary SDL_EGL_UnloadLibrary
    35 #define KMSDRM_GLES_DeleteContext SDL_EGL_DeleteContext
    36 #define KMSDRM_GLES_GetSwapInterval SDL_EGL_GetSwapInterval
    37 
    38 extern int KMSDRM_GLES_SetSwapInterval(_THIS, int interval);
    39 extern int KMSDRM_GLES_LoadLibrary(_THIS, const char *path);
    40 extern SDL_GLContext KMSDRM_GLES_CreateContext(_THIS, SDL_Window * window);
    41 extern int KMSDRM_GLES_SwapWindow(_THIS, SDL_Window * window);
    42 extern int KMSDRM_GLES_MakeCurrent(_THIS, SDL_Window * window, SDL_GLContext context);
    43 
    44 #endif /* SDL_VIDEO_DRIVER_KMSDRM && SDL_VIDEO_OPENGL_EGL */
    45 
    46 #endif /* _SDL_kmsdrmopengles_h */
    47 
    48 /* vi: set ts=4 sw=4 expandtab: */