SceneShadow: Add the skeleton (stubs for derived scene members only) of a new

shadow mapping scene.  When complete, the scene will render geometry into a
depth texture from the point of view of the light source for the scene, then
render the "ground" onto which a shadow of the object would be projected (the
depth values from the texture will be used for a distance-from-light
comparison with the actual object), and finally render the actual object, which
appears to be casting a shadow.

5 files changed, 118 insertions, 0 deletions

diff --git a/src/android.cpp b/src/android.cpp
index d9678f4..53a17f7 100644
--- a/src/android.cpp
+++ b/src/android.cpp
@@ -275,6 +275,7 @@ create_and_add_scenes(std::vector<Scene*>& scenes, Canvas& canvas)
     scenes.push_back(new SceneIdeas(canvas));
     scenes.push_back(new SceneTerrain(canvas));
     scenes.push_back(new SceneJellyfish(canvas));
+    scenes.push_back(new SceneShadow(canvas));
 }
 
 
diff --git a/src/default-benchmarks.h b/src/default-benchmarks.h
index d121e30..45f7672 100644
--- a/src/default-benchmarks.h
+++ b/src/default-benchmarks.h
@@ -63,6 +63,7 @@ private:
         benchmarks.push_back("ideas:speed=duration");
         benchmarks.push_back("jellyfish");
         benchmarks.push_back("terrain");
+        benchmarks.push_back("shadow");
         benchmarks.push_back("conditionals:vertex-steps=0:fragment-steps=0");
         benchmarks.push_back("conditionals:vertex-steps=0:fragment-steps=5");
         benchmarks.push_back("conditionals:vertex-steps=5:fragment-steps=0");
diff --git a/src/main.cpp b/src/main.cpp
index 36cdf7b..d310a51 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -63,6 +63,7 @@ add_and_register_scenes(vector<Scene*>& scenes, Canvas& canvas)
     scenes.push_back(new SceneIdeas(canvas));
     scenes.push_back(new SceneTerrain(canvas));
     scenes.push_back(new SceneJellyfish(canvas));
+    scenes.push_back(new SceneShadow(canvas));
 
     for (vector<Scene*>::const_iterator iter = scenes.begin();
          iter != scenes.end();
diff --git a/src/scene-shadow.cpp b/src/scene-shadow.cpp
new file mode 100644
index 0000000..f7c303c
--- /dev/null
+++ b/src/scene-shadow.cpp
@@ -0,0 +1,97 @@
+//
+// Copyright © 2012 Linaro Limited
+//
+// This file is part of the glmark2 OpenGL (ES) 2.0 benchmark.
+//
+// glmark2 is free software: you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the Free Software
+// Foundation, either version 3 of the License, or (at your option) any later
+// version.
+//
+// glmark2 is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+// details.
+//
+// You should have received a copy of the GNU General Public License along with
+// glmark2.  If not, see <http://www.gnu.org/licenses/>.
+//
+// Authors:
+//  Jesse Barker
+//
+#include "scene.h"
+#include "util.h"
+
+class ShadowPrivate
+{
+};
+
+SceneShadow::SceneShadow(Canvas& canvas) :
+    Scene(canvas, "shadow"),
+    priv_(0)
+{
+}
+
+SceneShadow::~SceneShadow()
+{
+    delete priv_;
+}
+
+bool
+SceneShadow::supported(bool show_errors)
+{
+    return show_errors;
+}
+
+bool
+SceneShadow::load()
+{
+    running_ = false;
+    return true;
+}
+
+void
+SceneShadow::unload()
+{
+}
+
+bool
+SceneShadow::setup()
+{
+    if (!Scene::setup())
+        return false;
+
+    priv_ = new ShadowPrivate();
+    // Set core scene timing after actual initialization so we don't measure
+    // set up time.
+    startTime_ = Util::get_timestamp_us() / 1000000.0;
+    lastUpdateTime_ = startTime_;
+    running_ = true;
+
+    return true;
+}
+
+void
+SceneShadow::teardown()
+{
+    // Add scene-specific teardown here
+    Scene::teardown();
+}
+
+void
+SceneShadow::update()
+{
+    Scene::update();
+    // Add scene-specific update here
+}
+
+void
+SceneShadow::draw()
+{
+}
+
+Scene::ValidationResult
+SceneShadow::validate()
+{
+    return Scene::ValidationUnknown;
+}
diff --git a/src/scene.h b/src/scene.h
index a455fbd..dd77ba9 100644
--- a/src/scene.h
+++ b/src/scene.h
@@ -556,4 +556,22 @@ public:
     void draw();
     ValidationResult validate();
 };
+
+class ShadowPrivate;
+class SceneShadow : public Scene
+{
+    ShadowPrivate* priv_;
+public:
+    SceneShadow(Canvas& canvas);
+    ~SceneShadow();
+    bool supported(bool show_errors);
+    bool load();
+    void unload();
+    bool setup();
+    void teardown();
+    void update();
+    void draw();
+    ValidationResult validate();
+};
+
 #endif