egl: fold _eglError() + return EGL_FALSE
[mesa.git] / src / egl / main / egldisplay.c
index 2849dd96c6431169d516d370cb3600bd20bd5c96..7aaab3c2c94fc8e9e403c4ad22b83e2e1dc328db 100644 (file)
@@ -1,6 +1,6 @@
 /**************************************************************************
  *
- * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * Copyright 2008 VMware, Inc.
  * Copyright 2009-2010 Chia-I Wu <olvaffe@gmail.com>
  * Copyright 2010-2011 LunarG, Inc.
  * All Rights Reserved.
 #include <assert.h>
 #include <stdlib.h>
 #include <string.h>
+#include "c11/threads.h"
+#include "util/u_atomic.h"
+
 #include "eglcontext.h"
+#include "eglcurrent.h"
 #include "eglsurface.h"
 #include "egldisplay.h"
 #include "egldriver.h"
 #include "eglglobals.h"
-#include "eglmutex.h"
 #include "egllog.h"
+#include "eglimage.h"
+#include "eglsync.h"
 
 /* Includes for _eglNativePlatformDetectNativeDisplay */
 #ifdef HAVE_MINCORE
 #ifdef HAVE_DRM_PLATFORM
 #include <gbm.h>
 #endif
-#ifdef HAVE_FBDEV_PLATFORM
-#include <stdint.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#endif
+
+
+/**
+ * Map --with-platforms names to platform types.
+ */
+static const struct {
+   _EGLPlatformType platform;
+   const char *name;
+} egl_platforms[_EGL_NUM_PLATFORMS] = {
+   { _EGL_PLATFORM_X11, "x11" },
+   { _EGL_PLATFORM_WAYLAND, "wayland" },
+   { _EGL_PLATFORM_DRM, "drm" },
+   { _EGL_PLATFORM_ANDROID, "android" },
+   { _EGL_PLATFORM_HAIKU, "haiku" },
+   { _EGL_PLATFORM_SURFACELESS, "surfaceless" },
+};
 
 
 /**
 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_WAYLAND, "wayland" },
-      { _EGL_PLATFORM_DRM, "drm" },
-      { _EGL_PLATFORM_FBDEV, "fbdev" }
-   };
    _EGLPlatformType plat = _EGL_INVALID_PLATFORM;
    const char *plat_name;
    EGLint i;
@@ -133,24 +138,16 @@ _eglPointerIsDereferencable(void *p)
  * Try detecting native platform with the help of native display characteristcs.
  */
 static _EGLPlatformType
-_eglNativePlatformDetectNativeDisplay(EGLNativeDisplayType nativeDisplay)
+_eglNativePlatformDetectNativeDisplay(void *nativeDisplay)
 {
-#ifdef HAVE_FBDEV_PLATFORM
-   struct stat buf;
-#endif
-
    if (nativeDisplay == EGL_DEFAULT_DISPLAY)
       return _EGL_INVALID_PLATFORM;
 
-#ifdef HAVE_FBDEV_PLATFORM
-   /* fbdev is the only platform that can be a file descriptor. */
-   if (fstat((intptr_t) nativeDisplay, &buf) == 0 && S_ISCHR(buf.st_mode))
-      return _EGL_PLATFORM_FBDEV;
-#endif
-
    if (_eglPointerIsDereferencable(nativeDisplay)) {
       void *first_pointer = *(void **) nativeDisplay;
 
+      (void) first_pointer; /* silence unused var warning */
+
 #ifdef HAVE_WAYLAND_PLATFORM
       /* wl_display is a wl_proxy, which is a wl_object.
        * wl_object's first element points to the interfacetype. */
@@ -168,6 +165,10 @@ _eglNativePlatformDetectNativeDisplay(EGLNativeDisplayType nativeDisplay)
       /* If not matched to any other platform, fallback to x11. */
       return _EGL_PLATFORM_X11;
 #endif
+
+#ifdef HAVE_HAIKU_PLATFORM
+       return _EGL_PLATFORM_HAIKU;
+#endif
    }
 
    return _EGL_INVALID_PLATFORM;
@@ -178,17 +179,32 @@ _eglNativePlatformDetectNativeDisplay(EGLNativeDisplayType nativeDisplay)
  * Return the native platform.  It is the platform of the EGL native types.
  */
 _EGLPlatformType
-_eglGetNativePlatform(EGLNativeDisplayType nativeDisplay)
+_eglGetNativePlatform(void *nativeDisplay)
 {
    static _EGLPlatformType native_platform = _EGL_INVALID_PLATFORM;
+   _EGLPlatformType detected_platform = native_platform;
+
+   if (detected_platform == _EGL_INVALID_PLATFORM) {
+      const char *detection_method;
+
+      detected_platform = _eglGetNativePlatformFromEnv();
+      detection_method = "environment overwrite";
 
-   if (native_platform == _EGL_INVALID_PLATFORM) {
-      native_platform = _eglGetNativePlatformFromEnv();
-      if (native_platform == _EGL_INVALID_PLATFORM) {
-         native_platform = _eglNativePlatformDetectNativeDisplay(nativeDisplay);
-         if (native_platform == _EGL_INVALID_PLATFORM)
-            native_platform = _EGL_NATIVE_PLATFORM;
+      if (detected_platform == _EGL_INVALID_PLATFORM) {
+         detected_platform = _eglNativePlatformDetectNativeDisplay(nativeDisplay);
+         detection_method = "autodetected";
       }
+
+      if (detected_platform == _EGL_INVALID_PLATFORM) {
+         detected_platform = _EGL_NATIVE_PLATFORM;
+         detection_method = "build-time configuration";
+      }
+
+      _eglLog(_EGL_DEBUG, "Native platform type: %s (%s)",
+              egl_platforms[detected_platform].name, detection_method);
+
+      p_atomic_cmpxchg(&native_platform, _EGL_INVALID_PLATFORM,
+                       detected_platform);
    }
 
    return native_platform;
@@ -237,7 +253,7 @@ _eglFindDisplay(_EGLPlatformType plat, void *plat_dpy)
    if (plat == _EGL_INVALID_PLATFORM)
       return NULL;
 
-   _eglLockMutex(_eglGlobal.Mutex);
+   mtx_lock(_eglGlobal.Mutex);
 
    /* search the display list first */
    dpy = _eglGlobal.DisplayList;
@@ -249,9 +265,9 @@ _eglFindDisplay(_EGLPlatformType plat, void *plat_dpy)
 
    /* create a new display */
    if (!dpy) {
-      dpy = (_EGLDisplay *) calloc(1, sizeof(_EGLDisplay));
+      dpy = calloc(1, sizeof(_EGLDisplay));
       if (dpy) {
-         _eglInitMutex(&dpy->Mutex);
+         mtx_init(&dpy->Mutex, mtx_plain);
          dpy->Platform = plat;
          dpy->PlatformDisplay = plat_dpy;
 
@@ -261,7 +277,7 @@ _eglFindDisplay(_EGLPlatformType plat, void *plat_dpy)
       }
    }
 
-   _eglUnlockMutex(_eglGlobal.Mutex);
+   mtx_unlock(_eglGlobal.Mutex);
 
    return dpy;
 }
@@ -294,6 +310,26 @@ _eglReleaseDisplayResources(_EGLDriver *drv, _EGLDisplay *display)
       drv->API.DestroySurface(drv, display, surf);
    }
    assert(!display->ResourceLists[_EGL_RESOURCE_SURFACE]);
+
+   list = display->ResourceLists[_EGL_RESOURCE_IMAGE];
+   while (list) {
+      _EGLImage *image = (_EGLImage *) list;
+      list = list->Next;
+
+      _eglUnlinkImage(image);
+      drv->API.DestroyImageKHR(drv, display, image);
+   }
+   assert(!display->ResourceLists[_EGL_RESOURCE_IMAGE]);
+
+   list = display->ResourceLists[_EGL_RESOURCE_SYNC];
+   while (list) {
+      _EGLSync *sync = (_EGLSync *) list;
+      list = list->Next;
+
+      _eglUnlinkSync(sync);
+      drv->API.DestroySyncKHR(drv, display, sync);
+   }
+   assert(!display->ResourceLists[_EGL_RESOURCE_SYNC]);
 }
 
 
@@ -321,14 +357,14 @@ _eglCheckDisplayHandle(EGLDisplay dpy)
 {
    _EGLDisplay *cur;
 
-   _eglLockMutex(_eglGlobal.Mutex);
+   mtx_lock(_eglGlobal.Mutex);
    cur = _eglGlobal.DisplayList;
    while (cur) {
       if (cur == (_EGLDisplay *) dpy)
          break;
       cur = cur->Next;
    }
-   _eglUnlockMutex(_eglGlobal.Mutex);
+   mtx_unlock(_eglGlobal.Mutex);
    return (cur != NULL);
 }
 
@@ -358,7 +394,11 @@ _eglCheckResource(void *res, _EGLResourceType type, _EGLDisplay *dpy)
 
 
 /**
- * Initialize a display resource.
+ * Initialize a display resource.  The size of the subclass object is
+ * specified.
+ *
+ * This is supposed to be called from the initializers of subclasses, such as
+ * _eglInitContext or _eglInitSurface.
  */
 void
 _eglInitResource(_EGLResource *res, EGLint size, _EGLDisplay *dpy)
@@ -437,3 +477,100 @@ _eglUnlinkResource(_EGLResource *res, _EGLResourceType type)
    /* We always unlink before destroy.  The driver still owns a reference */
    assert(res->RefCount);
 }
+
+#ifdef HAVE_X11_PLATFORM
+static EGLBoolean
+_eglParseX11DisplayAttribList(_EGLDisplay *display, const EGLint *attrib_list)
+{
+   int i;
+
+   if (attrib_list == NULL) {
+      return EGL_TRUE;
+   }
+
+   for (i = 0; attrib_list[i] != EGL_NONE; i += 2) {
+      EGLint attrib = attrib_list[i];
+      EGLint value = attrib_list[i + 1];
+
+      /* EGL_EXT_platform_x11 recognizes exactly one attribute,
+       * EGL_PLATFORM_X11_SCREEN_EXT, which is optional.
+       */
+      if (attrib != EGL_PLATFORM_X11_SCREEN_EXT)
+         return _eglError(EGL_BAD_ATTRIBUTE, "eglGetPlatformDisplay");
+
+      display->Options.Platform = (void *)(uintptr_t)value;
+   }
+
+   return EGL_TRUE;
+}
+
+_EGLDisplay*
+_eglGetX11Display(Display *native_display,
+                  const EGLint *attrib_list)
+{
+   _EGLDisplay *display = _eglFindDisplay(_EGL_PLATFORM_X11,
+                                          native_display);
+
+   if (!display) {
+      _eglError(EGL_BAD_ALLOC, "eglGetPlatformDisplay");
+      return NULL;
+   }
+
+   if (!_eglParseX11DisplayAttribList(display, attrib_list)) {
+      return NULL;
+   }
+
+   return display;
+}
+#endif /* HAVE_X11_PLATFORM */
+
+#ifdef HAVE_DRM_PLATFORM
+_EGLDisplay*
+_eglGetGbmDisplay(struct gbm_device *native_display,
+                  const EGLint *attrib_list)
+{
+   /* EGL_MESA_platform_gbm recognizes no attributes. */
+   if (attrib_list != NULL && attrib_list[0] != EGL_NONE) {
+      _eglError(EGL_BAD_ATTRIBUTE, "eglGetPlatformDisplay");
+      return NULL;
+   }
+
+   return _eglFindDisplay(_EGL_PLATFORM_DRM, native_display);
+}
+#endif /* HAVE_DRM_PLATFORM */
+
+#ifdef HAVE_WAYLAND_PLATFORM
+_EGLDisplay*
+_eglGetWaylandDisplay(struct wl_display *native_display,
+                      const EGLint *attrib_list)
+{
+   /* EGL_EXT_platform_wayland recognizes no attributes. */
+   if (attrib_list != NULL && attrib_list[0] != EGL_NONE) {
+      _eglError(EGL_BAD_ATTRIBUTE, "eglGetPlatformDisplay");
+      return NULL;
+   }
+
+   return _eglFindDisplay(_EGL_PLATFORM_WAYLAND, native_display);
+}
+#endif /* HAVE_WAYLAND_PLATFORM */
+
+#ifdef HAVE_SURFACELESS_PLATFORM
+_EGLDisplay*
+_eglGetSurfacelessDisplay(void *native_display,
+                          const EGLint *attrib_list)
+{
+   /* This platform has no native display. */
+   if (native_display != NULL) {
+      _eglError(EGL_BAD_PARAMETER, "eglGetPlatformDisplay");
+      return NULL;
+   }
+
+   /* This platform recognizes no display attributes. */
+   if (attrib_list != NULL && attrib_list[0] != EGL_NONE) {
+      _eglError(EGL_BAD_ATTRIBUTE, "eglGetPlatformDisplay");
+      return NULL;
+   }
+
+   return _eglFindDisplay(_EGL_PLATFORM_SURFACELESS, native_display);
+}
+#endif /* HAVE_SURFACELESS_PLATFORM */