1 files changed, 27 insertions, 6 deletions
diff --git a/src/gpu/effects/GrTextureDomainEffect.cpp b/src/gpu/effects/GrTextureDomainEffect.cpp
index 39c992eb8c..5b1c72f77a 100644
--- a/src/gpu/effects/GrTextureDomainEffect.cpp
+++ b/src/gpu/effects/GrTextureDomainEffect.cpp
@@ -70,12 +70,33 @@ void GrGLTextureDomainEffect::emitCode(GrGLShaderBuilder* builder,
         builder->fFSCode.append(";\n");
     } else {
         GrAssert(GrTextureDomainEffect::kDecal_WrapMode == effect.wrapMode());
-        builder->fFSCode.append("\tbvec4 outside;\n");
-        builder->fFSCode.appendf("\toutside.xy = lessThan(%s, %s.xy);\n", coords, domain);
-        builder->fFSCode.appendf("\toutside.zw = greaterThan(%s, %s.zw);\n", coords, domain);
-        builder->fFSCode.appendf("\t%s = any(outside) ? vec4(0.0, 0.0, 0.0, 0.0) : ", outputColor);
-        builder->appendTextureLookupAndModulate(&builder->fFSCode, inputColor, samplers[0], coords);
-        builder->fFSCode.append(";\n");
+
+        if (kImagination_GrGLVendor == builder->ctxInfo().vendor()) {
+            // On the NexusS and GalaxyNexus, the other path (with the 'any' 
+            // call) causes the compilation error "Calls to any function that 
+            // may require a gradient calculation inside a conditional block 
+            // may return undefined results". This appears to be an issue with
+            // the 'any' call since even the simple "result=black; if (any())
+            // result=white;" code fails to compile.
+            builder->fFSCode.appendf("\tvec4 outside = vec4(0.0, 0.0, 0.0, 0.0);\n");
+            builder->fFSCode.appendf("\tvec4 inside = ");
+            builder->appendTextureLookupAndModulate(&builder->fFSCode, inputColor, samplers[0], coords);
+            builder->fFSCode.appendf(";\n");
+
+            builder->fFSCode.appendf("\tfloat x = abs(2.0*(%s.x - %s.x)/(%s.z - %s.x) - 1.0);\n", 
+                                     coords, domain, domain, domain);
+            builder->fFSCode.appendf("\tfloat y = abs(2.0*(%s.y - %s.y)/(%s.w - %s.y) - 1.0);\n", 
+                                     coords, domain, domain, domain);
+            builder->fFSCode.appendf("\tfloat blend = step(1.0, max(x, y));\n");
+            builder->fFSCode.appendf("\t%s = mix(inside, outside, blend);\n", outputColor);
+        } else {
+            builder->fFSCode.append("\tbvec4 outside;\n");
+            builder->fFSCode.appendf("\toutside.xy = lessThan(%s, %s.xy);\n", coords, domain);
+            builder->fFSCode.appendf("\toutside.zw = greaterThan(%s, %s.zw);\n", coords, domain);
+            builder->fFSCode.appendf("\t%s = any(outside) ? vec4(0.0, 0.0, 0.0, 0.0) : ", outputColor);
+            builder->appendTextureLookupAndModulate(&builder->fFSCode, inputColor, samplers[0], coords);
+            builder->fFSCode.append(";\n");
+        }
     }
 }