egl: fold _eglError() + return EGL_FALSE
[mesa.git] / src / egl / main / egldisplay.c
index a167ae5c73873a26cc7fabfd85f6a51a1885cb96..7aaab3c2c94fc8e9e403c4ad22b83e2e1dc328db 100644 (file)
 #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-egl-platforms names to platform types.
+ * Map --with-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" },
-   { _EGL_PLATFORM_NULL, "null" },
    { _EGL_PLATFORM_ANDROID, "android" },
-   { _EGL_PLATFORM_HAIKU, "haiku" }
+   { _EGL_PLATFORM_HAIKU, "haiku" },
+   { _EGL_PLATFORM_SURFACELESS, "surfaceless" },
 };
 
 
@@ -143,19 +140,9 @@ _eglPointerIsDereferencable(void *p)
 static _EGLPlatformType
 _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;
 
@@ -195,24 +182,30 @@ _EGLPlatformType
 _eglGetNativePlatform(void *nativeDisplay)
 {
    static _EGLPlatformType native_platform = _EGL_INVALID_PLATFORM;
-   char *detection_method = NULL;
+   _EGLPlatformType detected_platform = native_platform;
 
-   if (native_platform == _EGL_INVALID_PLATFORM) {
-      native_platform = _eglGetNativePlatformFromEnv();
+   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 = _eglNativePlatformDetectNativeDisplay(nativeDisplay);
+
+      if (detected_platform == _EGL_INVALID_PLATFORM) {
+         detected_platform = _eglNativePlatformDetectNativeDisplay(nativeDisplay);
          detection_method = "autodetected";
-         if (native_platform == _EGL_INVALID_PLATFORM) {
-            native_platform = _EGL_NATIVE_PLATFORM;
-            detection_method = "build-time configuration";
-         }
       }
-   }
 
-   if (detection_method != NULL)
+      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[native_platform].name, detection_method);
+              egl_platforms[detected_platform].name, detection_method);
+
+      p_atomic_cmpxchg(&native_platform, _EGL_INVALID_PLATFORM,
+                       detected_platform);
+   }
 
    return native_platform;
 }
@@ -260,7 +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;
@@ -274,7 +267,7 @@ _eglFindDisplay(_EGLPlatformType plat, void *plat_dpy)
    if (!dpy) {
       dpy = calloc(1, sizeof(_EGLDisplay));
       if (dpy) {
-         _eglInitMutex(&dpy->Mutex);
+         mtx_init(&dpy->Mutex, mtx_plain);
          dpy->Platform = plat;
          dpy->PlatformDisplay = plat_dpy;
 
@@ -284,7 +277,7 @@ _eglFindDisplay(_EGLPlatformType plat, void *plat_dpy)
       }
    }
 
-   _eglUnlockMutex(_eglGlobal.Mutex);
+   mtx_unlock(_eglGlobal.Mutex);
 
    return dpy;
 }
@@ -317,6 +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]);
 }
 
 
@@ -344,14 +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);
 }
 
@@ -467,7 +480,7 @@ _eglUnlinkResource(_EGLResource *res, _EGLResourceType type)
 
 #ifdef HAVE_X11_PLATFORM
 static EGLBoolean
-_eglParseX11DisplayAttribList(const EGLint *attrib_list)
+_eglParseX11DisplayAttribList(_EGLDisplay *display, const EGLint *attrib_list)
 {
    int i;
 
@@ -481,14 +494,11 @@ _eglParseX11DisplayAttribList(const EGLint *attrib_list)
 
       /* EGL_EXT_platform_x11 recognizes exactly one attribute,
        * EGL_PLATFORM_X11_SCREEN_EXT, which is optional.
-       * 
-       * Mesa supports connecting to only the default screen, so we reject
-       * screen != 0.
        */
-      if (attrib != EGL_PLATFORM_X11_SCREEN_EXT || value != 0) {
-         _eglError(EGL_BAD_ATTRIBUTE, "eglGetPlatformDisplay");
-         return EGL_FALSE;
-      }
+      if (attrib != EGL_PLATFORM_X11_SCREEN_EXT)
+         return _eglError(EGL_BAD_ATTRIBUTE, "eglGetPlatformDisplay");
+
+      display->Options.Platform = (void *)(uintptr_t)value;
    }
 
    return EGL_TRUE;
@@ -498,11 +508,19 @@ _EGLDisplay*
 _eglGetX11Display(Display *native_display,
                   const EGLint *attrib_list)
 {
-   if (!_eglParseX11DisplayAttribList(attrib_list)) {
+   _EGLDisplay *display = _eglFindDisplay(_EGL_PLATFORM_X11,
+                                          native_display);
+
+   if (!display) {
+      _eglError(EGL_BAD_ALLOC, "eglGetPlatformDisplay");
       return NULL;
    }
 
-   return _eglFindDisplay(_EGL_PLATFORM_X11, native_display);
+   if (!_eglParseX11DisplayAttribList(display, attrib_list)) {
+      return NULL;
+   }
+
+   return display;
 }
 #endif /* HAVE_X11_PLATFORM */
 
@@ -535,3 +553,24 @@ _eglGetWaylandDisplay(struct wl_display *native_display,
    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 */