commit 4340c260c002f0cf7bc41571673e57913b5df19f
author Chris Craik <ccraik@google.com> Thu Sep 11 18:58:45 2014 -0700
committer Chris Craik <ccraik@google.com> Thu Sep 11 18:58:45 2014 -0700
tree d1e90e3ee3d7eff4414cfd7373083ef38551202e
parent db352c783575afee2d6bc29baf45c83d5fc421cf

Snap outline clipping to integer coordinates correctly

bug:17403105
Change-Id: I65b5d7103aac58ba6feb4b021c276c67e9341716

libs/hwui/OpenGLRenderer.cpp

diff --git a/libs/hwui/OpenGLRenderer.cpp b/libs/hwui/OpenGLRenderer.cpp
index 31cc1c8..0415efa 100755
--- a/libs/hwui/OpenGLRenderer.cpp
+++ b/libs/hwui/OpenGLRenderer.cpp
@@ -1744,10 +1744,13 @@
         glUniform4f(mCaches.currentProgram->getUniform("roundRectInnerRectLTRB"),
                 innerRect.left, innerRect.top,
                 innerRect.right, innerRect.bottom);
-        glUniform1f(mCaches.currentProgram->getUniform("roundRectRadius"),
-                state->radius);
         glUniformMatrix4fv(mCaches.currentProgram->getUniform("roundRectInvTransform"),
                 1, GL_FALSE, &state->matrix.data[0]);
+
+        // add half pixel to round out integer rect space to cover pixel centers
+        float roundedOutRadius = state->radius + 0.5f;
+        glUniform1f(mCaches.currentProgram->getUniform("roundRectRadius"),
+                roundedOutRadius);
     }
 }