From f50d60daac20ae553ac276e81ef8dc2e69f3ecdb Mon Sep 17 00:00:00 2001
From: Alexandros Frantzis <alexandros.frantzis@linaro.org>
Date: Thu, 16 Aug 2012 18:55:56 +0300
Subject: SceneJellyfish: Take into account the initialization status of
 internal objects.

---
 src/scene-jellyfish.cpp | 49 ++++++++++++++++++++++++++++++-------------------
 src/scene-jellyfish.h   |  4 ++--
 2 files changed, 32 insertions(+), 21 deletions(-)

diff --git a/src/scene-jellyfish.cpp b/src/scene-jellyfish.cpp
index bb8f17a..bc18ee3 100644
--- a/src/scene-jellyfish.cpp
+++ b/src/scene-jellyfish.cpp
@@ -62,7 +62,8 @@ SceneJellyfish::setup()
 
     // Set up our private object that does all of the lifting
     priv_ = new JellyfishPrivate();
-    priv_->initialize();
+    if (!priv_->initialize())
+        return false;
 
     // Set core scene timing after actual initialization so we don't measure
     // set up time.
@@ -110,7 +111,7 @@ using LibMatrix::vec2;
 using std::string;
 using std::vector;
 
-void
+bool
 GradientRenderer::init()
 {
     // Program set up
@@ -121,7 +122,7 @@ GradientRenderer::init()
     if (!Scene::load_shaders_from_strings(program_, vtx_source.str(),
         frg_source.str()))
     {
-        return;
+        return false;
     }
     positionLocation_ = program_["position"].location();
     uvLocation_ = program_["uvIn"].location();
@@ -147,6 +148,8 @@ GradientRenderer::init()
     glBufferSubData(GL_ARRAY_BUFFER, uvOffset_, uvs_.size() * sizeof(vec2),
                     &uvs_.front());
     glBindBuffer(GL_ARRAY_BUFFER, 0);
+
+    return true;
 }
 
 void
@@ -357,11 +360,25 @@ JellyfishPrivate::JellyfishPrivate() :
     blend_(0),
     blendFuncSrc_(0),
     blendFuncDst_(0)
+{
+}
+
+JellyfishPrivate::~JellyfishPrivate()
+{
+    positions_.clear();
+    normals_.clear();
+    colors_.clear();
+    texcoords_.clear();
+    indices_.clear();
+}
+
+bool
+JellyfishPrivate::initialize()
 {
     static const string modelFilename(GLMARK_DATA_PATH"/models/jellyfish.jobj");
     if (!load_obj(modelFilename))
     {
-        return;
+        return false;
     }
 
     // Now that we've setup the vertex data, we can setup the map of how
@@ -379,26 +396,16 @@ JellyfishPrivate::JellyfishPrivate() :
     dataMap_.texcoordOffset = dataMap_.colorOffset + dataMap_.colorSize;
     dataMap_.texcoordSize = texcoords_.size() * sv3;
     dataMap_.totalSize += dataMap_.texcoordSize;
-}
-
-JellyfishPrivate::~JellyfishPrivate()
-{
-    positions_.clear();
-    normals_.clear();
-    colors_.clear();
-    texcoords_.clear();
-    indices_.clear();
-}
 
-void
-JellyfishPrivate::initialize()
-{
     lastUpdateTime_ = Util::get_timestamp_us() / 1000.0;
     currentTime_ = static_cast<uint64_t>(lastUpdateTime_) % 100000000 / 1000.0;
     whichCaustic_ = static_cast<uint64_t>(currentTime_ * 30) % 32 + 1;
     rotation_ = 0.0;
 
-    gradient_.init();
+    if (!gradient_.init())
+    {
+        return false;
+    }
 
     // Set up program first so we can store attribute and uniform locations
     // away for the 
@@ -412,7 +419,7 @@ JellyfishPrivate::initialize()
     if (!Scene::load_shaders_from_strings(program_, vtx_source.str(),
         frg_source.str()))
     {
-        return;
+        return false;
     }
 
     // Stash away attribute and uniform locations for handy use.
@@ -455,6 +462,7 @@ JellyfishPrivate::initialize()
     if (!gotTex || textureObjects_[0] == 0)
     {
         Log::error("Jellyfish texture set up failed!!!\n");
+        return false;
     }
     glBindTexture(GL_TEXTURE_2D, 0);
     // Then, the caustics textures
@@ -470,6 +478,7 @@ JellyfishPrivate::initialize()
         if (!gotTex || textureObjects_[i] == 0)
         {
             Log::error("Caustics texture[%u] set up failed!!!\n", i);
+            return false;
         }
         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
@@ -487,6 +496,8 @@ JellyfishPrivate::initialize()
     glEnable(GL_BLEND);
     glDisable(GL_CULL_FACE);
     glDisable(GL_DEPTH_TEST);
+
+    return true;
 }
 
 void
diff --git a/src/scene-jellyfish.h b/src/scene-jellyfish.h
index 77be159..1e0db3a 100644
--- a/src/scene-jellyfish.h
+++ b/src/scene-jellyfish.h
@@ -48,7 +48,7 @@ public:
         vertices_.clear();
         uvs_.clear();
     }
-    void init();
+    bool init();
     void cleanup();
     void draw();
 };
@@ -114,7 +114,7 @@ class JellyfishPrivate
 public:
     JellyfishPrivate();
     ~JellyfishPrivate();
-    void initialize();
+    bool initialize();
     void update_viewport(const LibMatrix::vec2& viewport);
     void update_time();
     void cleanup();
-- 
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