Bug 1349055 - Stencil clear value needs to mask to be an unsigned integer; r=jgilbert

MozReview-Commit-ID: 48PE2bHh87L

--HG--
extra : rebase_source : d4637249f8356cf4c9803047575759698a496b89

dom/canvas/WebGLContextUtils.cpp

@@ -842,14 +842,14 @@ WebGLContext::AssertCachedGlobalState()
     gl->fGetFloatv(LOCAL_GL_DEPTH_CLEAR_VALUE, &depthClearValue);
     MOZ_ASSERT(IsCacheCorrect(mDepthClearValue, depthClearValue));
 
-    AssertUintParamCorrect(gl, LOCAL_GL_STENCIL_CLEAR_VALUE, mStencilClearValue);
+    const int maxStencilBits = 8;
+    const GLuint maxStencilBitsMask = (1 << maxStencilBits) - 1;
+    AssertMaskedUintParamCorrect(gl, LOCAL_GL_STENCIL_CLEAR_VALUE, maxStencilBitsMask, mStencilClearValue);
 
     // GLES 3.0.4, $4.1.4, p177:
     //   [...] the front and back stencil mask are both set to the value `2^s - 1`, where
     //   `s` is greater than or equal to the number of bits in the deepest stencil buffer
     //   supported by the GL implementation.
-    const int maxStencilBits = 8;
-    const GLuint maxStencilBitsMask = (1 << maxStencilBits) - 1;
     AssertMaskedUintParamCorrect(gl, LOCAL_GL_STENCIL_VALUE_MASK,      maxStencilBitsMask, mStencilValueMaskFront);
     AssertMaskedUintParamCorrect(gl, LOCAL_GL_STENCIL_BACK_VALUE_MASK, maxStencilBitsMask, mStencilValueMaskBack);