Fix projection offset caching

Because the caching of projection matrix didn't account for changes in
the offset flag, the flag could be ignored. Now we use both to verify
that the cached matrix can be used.

Change-Id: I193b94eaf0b98f046a6484f0866c3d25048653fd

2 files changed, 3 insertions, 1 deletions

diff --git a/libs/hwui/Program.cpp b/libs/hwui/Program.cpp
index a679552..ee77897 100644
--- a/libs/hwui/Program.cpp
+++ b/libs/hwui/Program.cpp
@@ -163,7 +163,7 @@ GLuint Program::buildShader(const char* source, GLenum type) {
 
 void Program::set(const mat4& projectionMatrix, const mat4& modelViewMatrix,
         const mat4& transformMatrix, bool offset) {
-    if (projectionMatrix != mProjection) {
+    if (projectionMatrix != mProjection || offset != mOffset) {
         if (CC_LIKELY(!offset)) {
             glUniformMatrix4fv(projection, 1, GL_FALSE, &projectionMatrix.data[0]);
         } else {
@@ -177,6 +177,7 @@ void Program::set(const mat4& projectionMatrix, const mat4& modelViewMatrix,
             glUniformMatrix4fv(projection, 1, GL_FALSE, &p.data[0]);
         }
         mProjection = projectionMatrix;
+        mOffset = offset;
     }
 
     mat4 t(transformMatrix);
diff --git a/libs/hwui/Program.h b/libs/hwui/Program.h
index bc0f211..5dfb2fa 100644
--- a/libs/hwui/Program.h
+++ b/libs/hwui/Program.h
@@ -431,6 +431,7 @@ private:
     bool mHasSampler;
 
     mat4 mProjection;
+    bool mOffset;
 }; // class Program
 
 }; // namespace uirenderer