commit 8aa195d7081b889f3a7b1f426cbd8556377aae5e
author Romain Guy <romainguy@google.com> Tue Jun 04 18:00:09 2013 -0700
committer Romain Guy <romainguy@google.com> Tue Jun 04 18:58:36 2013 -0700
tree 6cd0ab4181c25d3113c4e39b49e8f8a0c7d12b8b
parent 84f3c5689cffbfc1e45a0101d5bb636323769f54

Introduce Caches::bindTexture() to reduce glBindTexture calls

Change-Id: Ic345422567c020c0a9035ff51dcf2ae2a1fc59f4

libs/hwui/Caches.cpp

diff --git a/libs/hwui/Caches.cpp b/libs/hwui/Caches.cpp
index 9d5a854..23b5d76 100644
--- a/libs/hwui/Caches.cpp
+++ b/libs/hwui/Caches.cpp
@@ -47,7 +47,8 @@
 // Constructors/destructor
 ///////////////////////////////////////////////////////////////////////////////
 
-Caches::Caches(): Singleton<Caches>(), mExtensions(Extensions::getInstance()), mInitialized(false) {
+Caches::Caches(): Singleton<Caches>(),
+        mExtensions(Extensions::getInstance()), mInitialized(false) {
     init();
     initFont();
     initConstraints();
@@ -100,6 +101,8 @@
 
     mInitialized = true;
 
+    resetBoundTextures();
+
     return true;
 }
 
@@ -491,6 +494,24 @@
     }
 }
 
+void Caches::bindTexture(GLuint texture) {
+    if (mBoundTextures[mTextureUnit] != texture) {
+        glBindTexture(GL_TEXTURE_2D, texture);
+        mBoundTextures[mTextureUnit] = texture;
+    }
+}
+
+void Caches::bindTexture(GLenum target, GLuint texture) {
+    if (mBoundTextures[mTextureUnit] != texture) {
+        glBindTexture(target, texture);
+        mBoundTextures[mTextureUnit] = texture;
+    }
+}
+
+void Caches::resetBoundTextures() {
+    memset(mBoundTextures, 0, REQUIRED_TEXTURE_UNITS_COUNT * sizeof(GLuint));
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 // Scissor
 ///////////////////////////////////////////////////////////////////////////////