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Raspberry Pi: fix ES 1/PVR support & autodetect Mesa driver 

* The brcmGLESv2 vendor library also supports ES PVR/1 profiles
* Fallback to standard Mesa libraries if the VC4 driver is loaded
This commit is contained in:
Conn O'Griofa 2017-11-04 09:04:19 -07:00
parent 547448df6f
commit bf3e363d4b
1 changed files with 15 additions and 6 deletions
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21
src/video/SDL_egl.c
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@ -44,12 +44,12 @@
#if SDL_VIDEO_DRIVER_RPI
/* Raspbian places the OpenGL ES/EGL binaries in a non standard path */
#define DEFAULT_EGL "/opt/vc/lib/libbrcmEGL.so"
#define DEFAULT_OGL_ES2 "/opt/vc/lib/libbrcmGLESv2.so"
#define DEFAULT_EGL ( vc4 ? "libEGL.so.1" : "/opt/vc/lib/libbrcmEGL.so" )
#define DEFAULT_OGL_ES2 ( vc4 ? "libGLESv2.so.2" : "/opt/vc/lib/libbrcmGLESv2.so" )
#define ALT_EGL "/opt/vc/lib/libEGL.so"
#define ALT_OGL_ES2 "/opt/vc/lib/libGLESv2.so"
#define DEFAULT_OGL_ES_PVR "/opt/vc/lib/libGLES_CM.so"
#define DEFAULT_OGL_ES "/opt/vc/lib/libGLESv1_CM.so"
#define DEFAULT_OGL_ES_PVR ( vc4 ? "libGLES_CM.so.1" : "/opt/vc/lib/libbrcmGLESv2.so" )
#define DEFAULT_OGL_ES ( vc4 ? "libGLESv1_CM.so.1" : "/opt/vc/lib/libbrcmGLESv2.so" )
#elif SDL_VIDEO_DRIVER_ANDROID || SDL_VIDEO_DRIVER_VIVANTE
/* Android */
@ -256,6 +256,9 @@ SDL_EGL_LoadLibrary(_THIS, const char *egl_path, NativeDisplayType native_displa
#if SDL_VIDEO_DRIVER_WINDOWS || SDL_VIDEO_DRIVER_WINRT
const char *d3dcompiler;
#endif
#if SDL_VIDEO_DRIVER_RPI
SDL_bool vc4 = (0 == access("/sys/module/vc4/", F_OK));
#endif
if (_this->egl_data) {
return SDL_SetError("OpenGL ES context already created");
@ -295,7 +298,7 @@ SDL_EGL_LoadLibrary(_THIS, const char *egl_path, NativeDisplayType native_displa
path = DEFAULT_OGL_ES2;
egl_dll_handle = SDL_LoadObject(path);
#ifdef ALT_OGL_ES2
if (egl_dll_handle == NULL) {
if (egl_dll_handle == NULL && !vc4) {
path = ALT_OGL_ES2;
egl_dll_handle = SDL_LoadObject(path);
}
@ -308,6 +311,12 @@ SDL_EGL_LoadLibrary(_THIS, const char *egl_path, NativeDisplayType native_displa
path = DEFAULT_OGL_ES_PVR;
egl_dll_handle = SDL_LoadObject(path);
}
#ifdef ALT_OGL_ES2
if (egl_dll_handle == NULL && !vc4) {
path = ALT_OGL_ES2;
egl_dll_handle = SDL_LoadObject(path);
}
#endif
}
}
#ifdef DEFAULT_OGL
@ -339,7 +348,7 @@ SDL_EGL_LoadLibrary(_THIS, const char *egl_path, NativeDisplayType native_displa
dll_handle = SDL_LoadObject(path);
#ifdef ALT_EGL
if (dll_handle == NULL) {
if (dll_handle == NULL && !vc4) {
path = ALT_EGL;
dll_handle = SDL_LoadObject(path);
}