st/egl: One driver per hardware.

Merge multiple egl_<platform>_<pipe>.so into a single
egl_gallium_<pipe>.so.  The environment variable EGL_PLATFORM is now
used to modify the return value of _eglGetNativePlatform.

6 files changed, 66 insertions, 45 deletions

diff --git a/src/egl/main/Makefile b/src/egl/main/Makefile
index be27d9450f4..3834a5dbfa1 100644
--- a/src/egl/main/Makefile
+++ b/src/egl/main/Makefile
@@ -51,8 +51,6 @@ OBJECTS = $(SOURCES:.c=.o)
 # use dl*() to load drivers
 LOCAL_CFLAGS = -D_EGL_OS_UNIX=1
 
-EGL_DEFAULT_PLATFORM = $(firstword $(EGL_PLATFORMS))
-
 # translate --with-egl-platforms to _EGLPlatformType
 EGL_NATIVE_PLATFORM=_EGL_INVALID_PLATFORM
 ifeq ($(firstword $(EGL_PLATFORMS)),x11)
@@ -67,7 +65,6 @@ endif
 
 LOCAL_CFLAGS += \
 	-D_EGL_NATIVE_PLATFORM=$(EGL_NATIVE_PLATFORM) \
-	-D_EGL_DEFAULT_PLATFORM=\"$(EGL_DEFAULT_PLATFORM)\" \
 	-D_EGL_DRIVER_SEARCH_DIR=\"$(EGL_DRIVER_INSTALL_DIR)\"
 
 .c.o:
diff --git a/src/egl/main/SConscript b/src/egl/main/SConscript
index fad0671f38a..69ad873bd66 100644
--- a/src/egl/main/SConscript
+++ b/src/egl/main/SConscript
@@ -10,7 +10,6 @@ if env['platform'] != 'winddk':
 
 	env.Append(CPPDEFINES = [
 		'_EGL_NATIVE_PLATFORM=_EGL_PLATFORM_WINDOWS',
-		'_EGL_DEFAULT_PLATFORM=\\"gdi\\"',
 		'_EGL_DRIVER_SEARCH_DIR=\\"\\"',
 		'_EGL_OS_WINDOWS',
 		'KHRONOS_DLL_EXPORTS',
diff --git a/src/egl/main/egldisplay.c b/src/egl/main/egldisplay.c
index d666bdabe02..9980356c4aa 100644
--- a/src/egl/main/egldisplay.c
+++ b/src/egl/main/egldisplay.c
@@ -15,6 +15,62 @@
 
 
 /**
+ * Return the native platform by parsing EGL_PLATFORM.
+ */
+static _EGLPlatformType
+_eglGetNativePlatformFromEnv(void)
+{
+   /* map --with-egl-platforms names to platform types */
+   static const struct {
+      _EGLPlatformType platform;
+      const char *name;
+   } egl_platforms[_EGL_NUM_PLATFORMS] = {
+      { _EGL_PLATFORM_WINDOWS, "gdi" },
+      { _EGL_PLATFORM_X11, "x11" },
+      { _EGL_PLATFORM_DRM, "kms" },
+      { _EGL_PLATFORM_FBDEV, "fbdev" }
+   };
+   _EGLPlatformType plat = _EGL_INVALID_PLATFORM;
+   const char *plat_name;
+   EGLint i;
+
+   plat_name = getenv("EGL_PLATFORM");
+   /* try deprecated env variable */
+   if (!plat_name || !plat_name[0])
+      plat_name = getenv("EGL_DISPLAY");
+   if (!plat_name || !plat_name[0])
+      return _EGL_INVALID_PLATFORM;
+
+   for (i = 0; i < _EGL_NUM_PLATFORMS; i++) {
+      if (strcmp(egl_platforms[i].name, plat_name) == 0) {
+         plat = egl_platforms[i].platform;
+         break;
+      }
+   }
+
+   return plat;
+}
+
+
+/**
+ * Return the native platform.  It is the platform of the EGL native types.
+ */
+_EGLPlatformType
+_eglGetNativePlatform(void)
+{
+   static _EGLPlatformType native_platform = _EGL_INVALID_PLATFORM;
+
+   if (native_platform == _EGL_INVALID_PLATFORM) {
+      native_platform = _eglGetNativePlatformFromEnv();
+      if (native_platform == _EGL_INVALID_PLATFORM)
+         native_platform = _EGL_NATIVE_PLATFORM;
+   }
+
+   return native_platform;
+}
+
+
+/**
  * Finish display management.
  */
 void
diff --git a/src/egl/main/egldisplay.h b/src/egl/main/egldisplay.h
index 0b325f7cf03..5a1caa9cc65 100644
--- a/src/egl/main/egldisplay.h
+++ b/src/egl/main/egldisplay.h
@@ -101,6 +101,10 @@ struct _egl_display
 };
 
 
+extern _EGLPlatformType
+_eglGetNativePlatform(void);
+
+
 extern void
 _eglFiniDisplay(void);
 
diff --git a/src/egl/main/egldriver.c b/src/egl/main/egldriver.c
index db7b4a7471e..c65df286454 100644
--- a/src/egl/main/egldriver.c
+++ b/src/egl/main/egldriver.c
@@ -39,7 +39,7 @@
 
 /* XXX Need to decide how to do dynamic name lookup on Windows */
 static const char *DefaultDriverNames[] = {
-   "egl_gdi_swrast"
+   "egl_gallium_swrast"
 };
 
 typedef HMODULE lib_handle;
@@ -464,36 +464,16 @@ _eglPreloadUserDriver(void)
 
 
 /**
- * Preload platform drivers.
- *
- * Platform drivers are a set of drivers that support a certain window system.
- * The window system may be specified by EGL_PLATFORM.
+ * Preload Gallium drivers.
  *
  * FIXME This makes libEGL a memory hog if an user driver is not specified and
- * there are many platform drivers.
+ * there are many Gallium drivers
  */
 static EGLBoolean
-_eglPreloadPlatformDrivers(void)
+_eglPreloadGalliumDrivers(void)
 {
-   const char *dpy;
-   char prefix[32];
-   int ret;
-
-   dpy = getenv("EGL_PLATFORM");
-   /* try deprecated env variable */
-   if (!dpy || !dpy[0])
-      dpy = getenv("EGL_DISPLAY");
-   if (!dpy || !dpy[0])
-      dpy = _EGL_DEFAULT_PLATFORM;
-   if (!dpy || !dpy[0])
-      return EGL_FALSE;
-
-   ret = _eglsnprintf(prefix, sizeof(prefix), "egl_%s_", dpy);
-   if (ret < 0 || ret >= sizeof(prefix))
-      return EGL_FALSE;
-
    return (_eglPreloadForEach(_eglGetSearchPath(),
-            _eglLoaderPattern, (void *) prefix) > 0);
+            _eglLoaderPattern, (void *) "egl_gallium_") > 0);
 }
 
 
@@ -518,7 +498,7 @@ _eglPreloadDrivers(void)
    }
 
    loaded = (_eglPreloadUserDriver() ||
-             _eglPreloadPlatformDrivers());
+             _eglPreloadGalliumDrivers());
 
    _eglUnlockMutex(_eglGlobal.Mutex);
 
@@ -581,16 +561,6 @@ _eglLoadDefaultDriver(EGLDisplay dpy, EGLint *major, EGLint *minor)
 
 
 /**
- * Return the native platform.  It is the platform of the EGL native types.
- */
-_EGLPlatformType
-_eglGetNativePlatform(void)
-{
-   return _EGL_NATIVE_PLATFORM;
-}
-
-
-/**
  * Plug all the available fallback routines into the given driver's
  * dispatch table.
  */
diff --git a/src/egl/main/egldriver.h b/src/egl/main/egldriver.h
index 6a523747647..8b34c43b924 100644
--- a/src/egl/main/egldriver.h
+++ b/src/egl/main/egldriver.h
@@ -3,7 +3,6 @@
 
 
 #include "egltypedefs.h"
-#include "egldisplay.h"
 #include "eglapi.h"
 
 
@@ -89,10 +88,6 @@ extern _EGLDriver *
 _eglLoadDefaultDriver(EGLDisplay dpy, EGLint *major, EGLint *minor);
 
 
-extern _EGLPlatformType
-_eglGetNativePlatform(void);
-
-
 PUBLIC void
 _eglInitDriverFallbacks(_EGLDriver *drv);