Bug 1482301 - Remove webgl.webgl2-compat-mode. r=kvark

Differential Revision: https://phabricator.services.mozilla.com/D3070

--HG--
extra : moz-landing-system : lando

dom/canvas/WebGLFormats.cpp

@@ -1052,14 +1052,6 @@ FormatUsageAuthority::CreateForWebGL2(gl::GLContext* gl)
     ptr->AllowRBFormat(LOCAL_GL_DEPTH_STENCIL,
                        ptr->GetUsage(EffectiveFormat::DEPTH24_STENCIL8));
 
-    if (gfxPrefs::WebGL2CompatMode()) {
-        AddSimpleUnsized(ptr, LOCAL_GL_RGBA, LOCAL_GL_FLOAT, EffectiveFormat::RGBA32F);
-        AddSimpleUnsized(ptr, LOCAL_GL_RGB , LOCAL_GL_FLOAT, EffectiveFormat::RGB32F );
-
-        AddSimpleUnsized(ptr, LOCAL_GL_RGBA, LOCAL_GL_HALF_FLOAT_OES, EffectiveFormat::RGBA16F);
-        AddSimpleUnsized(ptr, LOCAL_GL_RGB , LOCAL_GL_HALF_FLOAT_OES, EffectiveFormat::RGB16F );
-    }
-
     ////////////////////////////////////
 
     return ret;

gfx/thebes/gfxPrefs.h

@@ -789,8 +789,6 @@ private:
   DECL_GFX_PREF(Live, "webgl.perf.spew-frame-allocs",          WebGLSpewFrameAllocs, bool, true);
 
 
-  DECL_GFX_PREF(Live, "webgl.webgl2-compat-mode",              WebGL2CompatMode, bool, false);
-
   DECL_GFX_PREF(Live, "widget.window-transforms.disabled",     WindowTransformsDisabled, bool, false);
 
   // WARNING:

modules/libpref/init/all.js

@@ -4741,7 +4741,6 @@ pref("webgl.bypass-shader-validation", false);
 pref("webgl.disable-fail-if-major-performance-caveat", false);
 pref("webgl.disable-DOM-blit-uploads", false);
 pref("webgl.allow-fb-invalidation", false);
-pref("webgl.webgl2-compat-mode", false);
 
 pref("webgl.perf.max-warnings", 0);
 pref("webgl.perf.max-acceptable-fb-status-invals", 0);