Bug 628403 - introduce webgl.force-enabled and webgl.disabled prefs - r=vlad, a=joe

content/canvas/src/WebGLContext.cpp

@@ -402,10 +402,11 @@ WebGLContext::SetDimensions(PRInt32 width, PRInt32 height)
     PRBool forceOSMesa = PR_FALSE;
     PRBool preferEGL = PR_FALSE;
     PRBool preferOpenGL = PR_FALSE;
+    PRBool forceEnabled = PR_FALSE;
     prefService->GetBoolPref("webgl.force_osmesa", &forceOSMesa);
     prefService->GetBoolPref("webgl.prefer_egl", &preferEGL);
     prefService->GetBoolPref("webgl.prefer_gl", &preferOpenGL);
-
+    prefService->GetBoolPref("webgl.force-enabled", &forceEnabled);
     if (PR_GetEnv("MOZ_WEBGL_PREFER_EGL")) {
         preferEGL = PR_TRUE;
     }
@@ -415,7 +416,7 @@ WebGLContext::SetDimensions(PRInt32 width, PRInt32 height)
     PRBool useANGLE = PR_TRUE;
 
     nsCOMPtr<nsIGfxInfo> gfxInfo = do_GetService("@mozilla.org/gfx/info;1");
-    if (gfxInfo) {
+    if (gfxInfo && !forceEnabled) {
         PRInt32 status;
         if (NS_SUCCEEDED(gfxInfo->GetFeatureStatus(nsIGfxInfo::FEATURE_WEBGL_OPENGL, &status))) {
             if (status != nsIGfxInfo::FEATURE_NO_INFO) {

content/canvas/src/WebGLContextUtils.cpp

@@ -89,9 +89,9 @@ WebGLContext::SafeToCreateCanvas3DContext(nsHTMLCanvasElement *canvasElement)
     nsCOMPtr<nsIPrefBranch> prefService = do_GetService(NS_PREFSERVICE_CONTRACTID, &rv);
     NS_ENSURE_SUCCESS(rv, PR_FALSE);
 
-    PRBool allSites = PR_FALSE;
-    rv = prefService->GetBoolPref("webgl.enabled_for_all_sites", &allSites);
-    if (NS_SUCCEEDED(rv) && allSites) {
+    PRBool disabled = PR_FALSE;
+    rv = prefService->GetBoolPref("webgl.disabled", &disabled);
+    if (NS_SUCCEEDED(rv) && !disabled) {
         // the all-sites pref was set, we're good to go
         return PR_TRUE;
     }

content/canvas/test/webgl/test_webgl_conformance_test_suite.html

@@ -45,14 +45,14 @@ function start() {
     return svc;
   }
 
-  function setEnabledForAllSites(value) {
+  function setForceEnabled(value) {
     netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
-    prefSvc().setBoolPref("webgl.enabled_for_all_sites", value);
+    prefSvc().setBoolPref("webgl.force-enabled", value);
   }
 
-  function getEnabledForAllSites() {
+  function getForceEnabled() {
     netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
-    return prefSvc().getBoolPref("webgl.enabled_for_all_sites");
+    return prefSvc().getBoolPref("webgl.force-enabled");
   }
 
   function setPreferGL(value) {
@@ -70,7 +70,7 @@ function start() {
   }
 
   function restoreOldPrefs() {
-    setEnabledForAllSites(saved_enabled_for_all_sites);
+    setForceEnabled(saved_force_enabled);
     setPreferGL(saved_prefer_gl);
   }
 
@@ -296,7 +296,7 @@ function start() {
     var reporter = new Reporter();
 
     // set WebGL-related preferences needed to run WebGL tests
-    setEnabledForAllSites(true);
+    setForceEnabled(true);
 
     // XXX temporary hack. Until the DirectX runtime is deployed on test slaves, we just use OpenGL,
     // so that rel-eng can safely deploy DirectX runtime without getting sudden mochitest failures
@@ -383,7 +383,7 @@ function start() {
     }
   }
 
-  var saved_enabled_for_all_sites = getEnabledForAllSites();
+  var saved_force_enabled = getForceEnabled();
   var saved_prefer_gl = getPreferGL();
 
   var statusElem = document.getElementById("status");

modules/libpref/src/init/all.js

@@ -3208,10 +3208,10 @@ pref("image.mem.max_ms_before_yield", 400);
 pref("image.mem.max_bytes_for_sync_decode", 150000);
 
 // WebGL prefs
-pref("webgl.enabled_for_all_sites", true);
+pref("webgl.force-enabled", false);
+pref("webgl.disabled", false);
 pref("webgl.shader_validator", true);
 pref("webgl.force_osmesa", false);
-pref("webgl.mochitest_native_gl", false);
 pref("webgl.osmesalib", "");
 pref("webgl.verbose", false);