Ensure glActiveTexture is cleaned up correctly on functor resume

Change-Id: I103d7d63b17289d599c2c08dcc442cfba9b8e51d

3 files changed, 10 insertions, 0 deletions

diff --git a/libs/hwui/Caches.cpp b/libs/hwui/Caches.cpp
index 6de8c8c..6ac637e 100644
--- a/libs/hwui/Caches.cpp
+++ b/libs/hwui/Caches.cpp
@@ -495,6 +495,10 @@ void Caches::activeTexture(GLuint textureUnit) {
     }
 }
 
+void Caches::resetActiveTexture() {
+    mTextureUnit = -1;
+}
+
 void Caches::bindTexture(GLuint texture) {
     if (mBoundTextures[mTextureUnit] != texture) {
         glBindTexture(GL_TEXTURE_2D, texture);
diff --git a/libs/hwui/Caches.h b/libs/hwui/Caches.h
index b7a97ad..f8b1e17 100644
--- a/libs/hwui/Caches.h
+++ b/libs/hwui/Caches.h
@@ -226,6 +226,11 @@ public:
     void activeTexture(GLuint textureUnit);
 
     /**
+     * Invalidate the cached value of the active texture unit.
+     */
+    void resetActiveTexture();
+
+    /**
      * Binds the specified texture as a GL_TEXTURE_2D texture.
      * All texture bindings must be performed with this method or
      * bindTexture(GLenum, GLuint).
diff --git a/libs/hwui/OpenGLRenderer.cpp b/libs/hwui/OpenGLRenderer.cpp
index 3e84273..dcf4ecf 100644
--- a/libs/hwui/OpenGLRenderer.cpp
+++ b/libs/hwui/OpenGLRenderer.cpp
@@ -351,6 +351,7 @@ void OpenGLRenderer::interrupt() {
             mCaches.currentProgram = NULL;
         }
     }
+    mCaches.resetActiveTexture();
     mCaches.unbindMeshBuffer();
     mCaches.unbindIndicesBuffer();
     mCaches.resetVertexPointers();