commit a44cb29164726cd9d812117819abdd7b60dfdd93
author Jason Sams <rjsams@android.com> Thu Jun 04 17:58:03 2009 -0700
committer Jason Sams <rjsams@android.com> Thu Jun 04 17:58:03 2009 -0700
tree 01233ed03cd22a70d2041c747b7fa1c74c208dba
parent a658e905f14fe500bfee3812b213a73cb37ef6f2

Add support for scripts to return an animation flag.  This allows them to indicate they are generating changing content and the rs thread to sleep if the content is static.

rsContext.cpp

diff --git a/rsContext.cpp b/rsContext.cpp
index c915c56..ec4a309 100644
--- a/rsContext.cpp
+++ b/rsContext.cpp
@@ -57,17 +57,19 @@
 
      LOGE("EGL 5");
      mContext = eglCreateContext(mDisplay, mConfig, NULL, NULL);
-     eglMakeCurrent(mDisplay, mSurface, mSurface, mContext);   
+     eglMakeCurrent(mDisplay, mSurface, mSurface, mContext);
      eglQuerySurface(mDisplay, mSurface, EGL_WIDTH, &mWidth);
      eglQuerySurface(mDisplay, mSurface, EGL_HEIGHT, &mHeight);
      LOGE("EGL 9");
 
 }
 
-void Context::runRootScript()
+bool Context::runRootScript()
 {
     rsAssert(mRootScript->mIsRoot);
 
+    glColor4f(1,1,1,1);
+    glEnable(GL_LIGHT0);
     glViewport(0, 0, 320, 480);
     float aspectH = 480.f / 320.f;
 
@@ -91,7 +93,7 @@
     glDepthMask(GL_TRUE);
     glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
 
-    glClearColor(mRootScript->mClearColor[0], 
+    glClearColor(mRootScript->mClearColor[0],
                  mRootScript->mClearColor[1],
                  mRootScript->mClearColor[2],
                  mRootScript->mClearColor[3]);
@@ -99,8 +101,7 @@
     glClear(GL_COLOR_BUFFER_BIT);
     glClear(GL_DEPTH_BUFFER_BIT);
 
-    mRootScript->run(this, 0);
-
+    return mRootScript->run(this, 0);
 }
 
 void Context::setupCheck()
@@ -133,24 +134,19 @@
      LOGE("TP 2");
 
      rsc->mRunning = true;
+     bool mDraw = true;
      while (!rsc->mExit) {
-         gIO->playCoreCommands(rsc);
+         mDraw |= gIO->playCoreCommands(rsc);
 
-         if (!rsc->mRootScript.get()) {
+         if (!mDraw || !rsc->mRootScript.get()) {
+             usleep(10000);
              continue;
          }
 
-
-         glColor4f(1,1,1,1);
-         glEnable(GL_LIGHT0);
-
          if (rsc->mRootScript.get()) {
-             rsc->runRootScript();
+             mDraw = rsc->runRootScript();
+             eglSwapBuffers(rsc->mDisplay, rsc->mSurface);
          }
-
-         eglSwapBuffers(rsc->mDisplay, rsc->mSurface);
-
-         usleep(10000);
      }
 
      LOGE("TP 6");
@@ -158,9 +154,6 @@
      glClear(GL_COLOR_BUFFER_BIT);
      eglSwapBuffers(rsc->mDisplay, rsc->mSurface);
      eglTerminate(rsc->mDisplay);
-
-     LOGE("TP 7");
-
      return NULL;
 }
 
@@ -257,7 +250,7 @@
 }
 
 ///////////////////////////////////////////////////////////////////////////////////////////
-// 
+//
 
 namespace android {
 namespace renderscript {