Mesa (master): egl: set UseFallback if LIBGL_ALWAYS_SOFTWARE is set

[Eric Engeström]

Module: Mesa
Branch: master
Commit: 47273d7312cb5b5b6b0b9faa814d574bbbce1c01
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=47273d7312cb5b5b6b0b9faa814d574bbbce1c01

Author: Eric Engestrom <eric.engestrom at imgtec.com>
Date:   Wed Oct 18 17:04:27 2017 +0100

egl: set UseFallback if LIBGL_ALWAYS_SOFTWARE is set

Suggested-by: Emil Velikov <emil.l.velikov at gmail.com>
Signed-off-by: Eric Engestrom <eric.engestrom at imgtec.com>

---

 src/egl/drivers/dri2/platform_surfaceless.c | 3 +--
 src/egl/drivers/dri2/platform_wayland.c     | 3 +--
 src/egl/drivers/dri2/platform_x11.c         | 2 +-
 src/egl/main/egldriver.c                    | 5 ++++-
 4 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/src/egl/drivers/dri2/platform_surfaceless.c b/src/egl/drivers/dri2/platform_surfaceless.c
index 2af4a40b1a..977b046016 100644
--- a/src/egl/drivers/dri2/platform_surfaceless.c
+++ b/src/egl/drivers/dri2/platform_surfaceless.c
@@ -36,7 +36,6 @@
 #include "egl_dri2.h"
 #include "egl_dri2_fallbacks.h"
 #include "loader.h"
-#include "util/debug.h"
 
 static __DRIimage*
 surfaceless_alloc_image(struct dri2_egl_display *dri2_dpy,
@@ -325,7 +324,7 @@ dri2_initialize_surfaceless(_EGLDriver *drv, _EGLDisplay *disp)
    dri2_dpy->fd = -1;
    disp->DriverData = (void *) dri2_dpy;
 
-   if (!env_var_as_boolean("LIBGL_ALWAYS_SOFTWARE", false)) {
+   if (!disp->Options.UseFallback) {
       driver_loaded = surfaceless_probe_device(disp, false);
       if (!driver_loaded)
          _eglLog(_EGL_WARNING,
diff --git a/src/egl/drivers/dri2/platform_wayland.c b/src/egl/drivers/dri2/platform_wayland.c
index 14db55ca74..b38eb1c335 100644
--- a/src/egl/drivers/dri2/platform_wayland.c
+++ b/src/egl/drivers/dri2/platform_wayland.c
@@ -42,7 +42,6 @@
 #include "egl_dri2.h"
 #include "egl_dri2_fallbacks.h"
 #include "loader.h"
-#include "util/debug.h"
 #include "util/u_vector.h"
 #include "eglglobals.h"
 
@@ -1972,7 +1971,7 @@ dri2_initialize_wayland(_EGLDriver *drv, _EGLDisplay *disp)
 {
    EGLBoolean initialized = EGL_FALSE;
 
-   if (!env_var_as_boolean("LIBGL_ALWAYS_SOFTWARE", false))
+   if (!disp->Options.UseFallback)
       initialized = dri2_initialize_wayland_drm(drv, disp);
 
    if (!initialized)
diff --git a/src/egl/drivers/dri2/platform_x11.c b/src/egl/drivers/dri2/platform_x11.c
index 9c20ea8f8a..5bcdb2dac7 100644
--- a/src/egl/drivers/dri2/platform_x11.c
+++ b/src/egl/drivers/dri2/platform_x11.c
@@ -1460,7 +1460,7 @@ dri2_initialize_x11(_EGLDriver *drv, _EGLDisplay *disp)
 {
    EGLBoolean initialized = EGL_FALSE;
 
-   if (!env_var_as_boolean("LIBGL_ALWAYS_SOFTWARE", false)) {
+   if (!disp->Options.UseFallback) {
 #ifdef HAVE_DRI3
       if (!env_var_as_boolean("LIBGL_DRI3_DISABLE", false))
          initialized = dri2_initialize_x11_dri3(drv, disp);
diff --git a/src/egl/main/egldriver.c b/src/egl/main/egldriver.c
index 33f8f57aeb..1ff37850e0 100644
--- a/src/egl/main/egldriver.c
+++ b/src/egl/main/egldriver.c
@@ -44,6 +44,8 @@
 #include "egldriver.h"
 #include "egllog.h"
 
+#include "util/debug.h"
+
 static mtx_t _eglModuleMutex = _MTX_INITIALIZER_NP;
 static _EGLDriver *_eglDriver;
 
@@ -86,7 +88,8 @@ _eglMatchDriver(_EGLDisplay *dpy)
    assert(!dpy->Initialized);
 
    /* set options */
-   dpy->Options.UseFallback = EGL_FALSE;
+   dpy->Options.UseFallback =
+      env_var_as_boolean("LIBGL_ALWAYS_SOFTWARE", false);
 
    best_drv = _eglMatchAndInitialize(dpy);
    if (!best_drv) {