Refactoring + new color map for bathymetry

src/SConscript

@@ -55,8 +55,8 @@ else:
 for i in sourceFiles:
   env.src_files.append(env.Object(i))
 
-# SWE_Block is used in every implementation
-sourceFiles = ['SWE_Block.cpp']
+# SWE_Block and Logger is used in every implementation
+sourceFiles = ['SWE_Block.cpp', 'tools/Logger.cpp']
 
 # OpenGL CPU-files
 if env['openGL'] == True:
@@ -66,7 +66,9 @@ if env['openGL'] == True:
   sourceFiles.append( ['opengl/controller.cpp'] )
   sourceFiles.append( ['opengl/shader.cpp'] )
   sourceFiles.append( ['opengl/visualization.cpp'] )
-  sourceFiles.append( ['opengl/text.cpp'] )
+  sourceFiles.append( ['opengl/vbo.cpp'] )
+  if env['openGL_instr'] == True:
+    sourceFiles.append( ['opengl/text.cpp'] )
 
 # Asagi scenario
 if env['asagi'] == True:

src/SWE_WavePropagationBlockCuda.cu

@@ -31,13 +31,9 @@
 
 #include "SWE_WavePropagationBlockCuda_kernels.hh"
 
-#include <cassert>
-
-#ifndef STATICLOGGER
-#define STATICLOGGER
 #include "tools/Logger.hpp"
-static tools::Logger s_sweLogger;
-#endif
+
+#include <cassert>
 
 // CUDA-C includes
 #include <cuda.h>
@@ -146,7 +142,7 @@ SWE_WavePropagationBlockCuda::~SWE_WavePropagationBlockCuda() {
   cudaFree(hvNetUpdatesAboveD);
 
   // reset the cuda device
-  s_sweLogger.printString("Resetting the CUDA devices");
+  tools::Logger::logger.printString("Resetting the CUDA devices");
   cudaDeviceReset();
 }
 

src/examples/swe_opengl.cpp

@@ -37,8 +37,8 @@
 #define SCREEN_WIDTH 800
 #define SCREEN_HEIGHT 600
 // Number of nodes (not cells) of grid
-#define GRID_XSIZE 401
-#define GRID_YSIZE 401
+#define GRID_XSIZE 801
+#define GRID_YSIZE 801
 #define WINDOW_TITLE "Shallow Water Equations v1.2"
 
 /**
@@ -81,7 +81,6 @@ int main(int argc, char *argv[])
 
 	// Initialize scenario:
 	SWE_Scenario* scene = NULL;
-	SWE_VisInfo* visInfo = NULL;
 	SWE_BlockCUDA* splash = NULL;
 	
 	// If input file specified, then read from VTK file:
@@ -89,7 +88,6 @@ int main(int argc, char *argv[])
 	   SWE_VtkScenarioVisInfo* newScene = SWE_VtkScenarioVisInfo::readVtkFile(argv[1]);
 	   // NOTE: Simulation uses a fixed resolution (independent of VTK file)
            scene = newScene;
-           visInfo = newScene;
            printf("Scenario read from input file %s\n\n", argv[1]);
 	};
 	
@@ -113,9 +111,9 @@ int main(int argc, char *argv[])
 
 	// Initialize simulation
 	printf("Init simulation\n\n");
-	Simulation sim(nx,ny,dx,dy, scene, visInfo, splash); 
+	Simulation sim(nx,ny,dx,dy, scene, splash);
 	printf("Init visualisation\n\n");
-	visualization.init(&sim);
+	visualization.init(sim);
 
 	// Initialize controller
 	Controller controller(&sim, &visualization);

src/opengl/controller.cpp

@@ -23,6 +23,7 @@
 #include "../scenarios/SWE_simple_scenarios_vis.h"
 #ifdef ASAGI
 #include "../scenarios/SWE_AsagiScenario.hpp"
+#include "../scenarios/SWE_AsagiScenario_vis.hpp"
 #endif // ASAGI
 
 /**
@@ -172,6 +173,14 @@ bool Controller::handleKeyPress( SDL_keysym *keysym) {
 			// Pause/Resume
 			paused = !paused;
 			break;
+		case SDLK_PLUS:
+			// Increase water scaling
+			visualization->modifyWaterScaling(1.5);
+			break;
+		case SDLK_MINUS:
+			// Decrease water scaling
+			visualization->modifyWaterScaling(1/1.5);
+			break;
 		case SDLK_1:
 			// Load scenario 1
 			{
@@ -187,8 +196,8 @@ bool Controller::handleKeyPress( SDL_keysym *keysym) {
 			  float dy = (newScene->getBoundaryPos(BND_TOP) - newScene->getBoundaryPos(BND_BOTTOM) )/SWE_Block::getNy();
 			  SWE_Block::initGridData(SWE_Block::getNx(),SWE_Block::getNy(),dx,dy);
 
-			  simulation->loadNewScenario(newScene, NULL);
-			  visualization->updateBathymetryVBO(simulation);
+			  simulation->loadNewScenario(newScene);
+			  visualization->init(*simulation);
 			}
 			break;
 		case SDLK_2:
@@ -208,8 +217,8 @@ bool Controller::handleKeyPress( SDL_keysym *keysym) {
 			  float dy = (newScene->getBoundaryPos(BND_TOP) - newScene->getBoundaryPos(BND_BOTTOM) )/SWE_Block::getNy();
 			  SWE_Block::initGridData(SWE_Block::getNx(),SWE_Block::getNy(),dx,dy);
 
-			  simulation->loadNewScenario(newScene, visInfos[1]);
-			  visualization->updateBathymetryVBO(simulation);
+			  simulation->loadNewScenario(newScene);
+			  visualization->init(*simulation, visInfos[1]);
 			}
 			break;
 		case SDLK_3:
@@ -227,8 +236,8 @@ bool Controller::handleKeyPress( SDL_keysym *keysym) {
 			  float dy = (newScene->getBoundaryPos(BND_TOP) - newScene->getBoundaryPos(BND_BOTTOM) )/SWE_Block::getNy();
 			  SWE_Block::initGridData(SWE_Block::getNx(),SWE_Block::getNy(),dx,dy);
 
-			  simulation->loadNewScenario(newScene, NULL);
-			  visualization->updateBathymetryVBO(simulation);
+			  simulation->loadNewScenario(newScene);
+			  visualization->init(*simulation);
 			}
 			break;
 #ifdef ASAGI
@@ -257,8 +266,8 @@ bool Controller::handleKeyPress( SDL_keysym *keysym) {
 				  float dy = (newScene->getBoundaryPos(BND_TOP) - newScene->getBoundaryPos(BND_BOTTOM) )/SWE_Block::getNy();
 				  SWE_Block::initGridData(SWE_Block::getNx(),SWE_Block::getNy(),dx,dy);
 
-				  simulation->loadNewScenario(newScene, NULL);
-				  visualization->updateBathymetryVBO(simulation);
+				  simulation->loadNewScenario(newScene);
+				  visualization->init(*simulation);
 			}
 			break;
 		case SDLK_5:
@@ -277,6 +286,8 @@ bool Controller::handleKeyPress( SDL_keysym *keysym) {
 							ASAGI_INPUT_DIR "tohoku_gebco_ucsb3_500m_hawaii_bath.nc",
 				            ASAGI_INPUT_DIR "tohoku_gebco_ucsb3_500m_hawaii_displ.nc",
 				            (float) 28800., simulationArea);
+
+					visInfos[4] = new SWE_AsagiJapanSmallVisInfo();
 				}
 
 				SWE_Scenario* newScene = scenarios[4];
@@ -286,8 +297,8 @@ bool Controller::handleKeyPress( SDL_keysym *keysym) {
 				  float dy = (newScene->getBoundaryPos(BND_TOP) - newScene->getBoundaryPos(BND_BOTTOM) )/SWE_Block::getNy();
 				  SWE_Block::initGridData(SWE_Block::getNx(),SWE_Block::getNy(),dx,dy);
 
-				  simulation->loadNewScenario(newScene, NULL);
-				  visualization->updateBathymetryVBO(simulation);
+				  simulation->loadNewScenario(newScene);
+				  visualization->init(*simulation, visInfos[4]);
 			}
 			break;
 		case SDLK_6:
@@ -315,8 +326,8 @@ bool Controller::handleKeyPress( SDL_keysym *keysym) {
 				  float dy = (newScene->getBoundaryPos(BND_TOP) - newScene->getBoundaryPos(BND_BOTTOM) )/SWE_Block::getNy();
 				  SWE_Block::initGridData(SWE_Block::getNx(),SWE_Block::getNy(),dx,dy);
 
-				  simulation->loadNewScenario(newScene, NULL);
-				  visualization->updateBathymetryVBO(simulation);
+				  simulation->loadNewScenario(newScene);
+				  visualization->init(*simulation);
 			}
 			break;
 		case SDLK_7:
@@ -344,8 +355,8 @@ bool Controller::handleKeyPress( SDL_keysym *keysym) {
 				  float dy = (newScene->getBoundaryPos(BND_TOP) - newScene->getBoundaryPos(BND_BOTTOM) )/SWE_Block::getNy();
 				  SWE_Block::initGridData(SWE_Block::getNx(),SWE_Block::getNy(),dx,dy);
 
-				  simulation->loadNewScenario(newScene, NULL);
-				  visualization->updateBathymetryVBO(simulation);
+				  simulation->loadNewScenario(newScene);
+				  visualization->init(*simulation);
 			}
 			break;
 #endif // ASAGI

src/opengl/shader.cpp

@@ -2,8 +2,9 @@
 // This file is part of SWE_CUDA (see file SWE_Block.cu for details).
 // 
 // Copyright (C) 2010,2011 Tobias Schnabel
+// Copyright (C) 2012      Sebastian Rettenberger
 // 
-// SWE_CUDA is free software: you can redristribute it and/or modify
+// SWE_CUDA 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.
@@ -19,6 +20,8 @@
 
 #include "shader.h"
 
+#include "../tools/Logger.hpp"
+
 /**
     Constructor.
 	Check whether shaders are supported. If yes, load vertex and fragment 
@@ -30,30 +33,43 @@
 								shader code
 	
 */	
-Shader::Shader(char const * vertexShaderFile,  char const * fragmentShaderFile) {
-	shdrSupport = isExtensionSupported("GL_ARB_vertex_shader") 
-					&& isExtensionSupported("GL_ARB_shader_objects")
-					&& isExtensionSupported("GL_ARB_fragment_shader");
+Shader::Shader(char const * vertexShaderFile, char const * fragmentShaderFile)
+{
+	if (!shdrSupport) {
+		// Shaders are either not supported or we did not try yet
+		// This if-statement makes sure, we only load the extensions once
+
+		shdrSupport = isExtensionSupported("GL_ARB_vertex_shader")
+						&& isExtensionSupported("GL_ARB_shader_objects")
+						&& isExtensionSupported("GL_ARB_fragment_shader");
+
+		if (shdrSupport) {
+			tools::Logger::logger.printString("Shaders supported!");
+
+			// Load extensions
+			glCreateShader = (PFNGLCREATESHADERPROC) SDL_GL_GetProcAddress("glCreateShader");
+			glCreateProgram = (PFNGLCREATEPROGRAMPROC) SDL_GL_GetProcAddress("glCreateProgram");
+			glAttachShader = (PFNGLATTACHSHADERPROC)SDL_GL_GetProcAddress("glAttachShader");
+			glCompileShader = (PFNGLCOMPILESHADERPROC)SDL_GL_GetProcAddress("glCompileShader");
+			glUseProgram = (PFNGLUSEPROGRAMPROC)SDL_GL_GetProcAddress("glUseProgram");
+			glDetachShader = (PFNGLDETACHSHADERPROC)SDL_GL_GetProcAddress("glDetachShader");
+			glDeleteShader = (PFNGLDELETESHADERPROC) SDL_GL_GetProcAddress("glDeleteShader");
+			glLinkProgram = (PFNGLLINKPROGRAMPROC)SDL_GL_GetProcAddress("glLinkProgram");
+			glShaderSource = (PFNGLSHADERSOURCEPROC)SDL_GL_GetProcAddress("glShaderSource");
+			glDeleteProgram = (PFNGLDELETEPROGRAMPROC)SDL_GL_GetProcAddress("glDeleteProgram");
+			glGetUniformLocation = (PFNGLGETUNIFORMLOCATIONPROC) SDL_GL_GetProcAddress("glGetUniformLocation");
+			glUniform1f = (PFNGLUNIFORM1FPROC) SDL_GL_GetProcAddress("glUniform1f");
+			glGetObjectParameterivARB = (PFNGLGETOBJECTPARAMETERIVARBPROC) SDL_GL_GetProcAddress("glGetObjectParameterivARB");
+			glGetShaderiv = (PFNGLGETSHADERIVPROC) SDL_GL_GetProcAddress("glGetShaderiv");
+			glGetShaderInfoLog = (PFNGLGETSHADERINFOLOGPROC) SDL_GL_GetProcAddress("glGetShaderInfoLog");
+			glGetProgramInfoLog = (PFNGLGETPROGRAMINFOLOGPROC) SDL_GL_GetProcAddress("glGetProgramInfoLog");
+		} else
+			tools::Logger::logger.printString("Shaders are NOT supported! Normal rendering mode");
+	}
 
 	shdrLoaded = false;
 
 	if (shdrSupport) {
-		// Load extensions
-		glCreateShader = (PFNGLCREATESHADERPROC) SDL_GL_GetProcAddress("glCreateShader");
-		glCreateProgram = (PFNGLCREATEPROGRAMPROC) SDL_GL_GetProcAddress("glCreateProgram");
-		glAttachShader = (PFNGLATTACHSHADERPROC)SDL_GL_GetProcAddress("glAttachShader");
-		glCompileShader = (PFNGLCOMPILESHADERPROC)SDL_GL_GetProcAddress("glCompileShader");
-		glUseProgram = (PFNGLUSEPROGRAMPROC)SDL_GL_GetProcAddress("glUseProgram");
-		glDetachShader = (PFNGLDETACHSHADERPROC)SDL_GL_GetProcAddress("glDetachShader");
-		glDeleteShader = (PFNGLDELETESHADERPROC) SDL_GL_GetProcAddress("glDeleteShader");
-		glLinkProgram = (PFNGLLINKPROGRAMPROC)SDL_GL_GetProcAddress("glLinkProgram");
-		glShaderSource = (PFNGLSHADERSOURCEPROC)SDL_GL_GetProcAddress("glShaderSource");
-		glDeleteProgram = (PFNGLDELETEPROGRAMPROC)SDL_GL_GetProcAddress("glDeleteProgram");
-		glGetObjectParameterivARB = (PFNGLGETOBJECTPARAMETERIVARBPROC) SDL_GL_GetProcAddress("glGetObjectParameterivARB");
-		glGetShaderiv = (PFNGLGETSHADERIVPROC) SDL_GL_GetProcAddress("glGetShaderiv");
-		glGetShaderInfoLog = (PFNGLGETSHADERINFOLOGPROC) SDL_GL_GetProcAddress("glGetShaderInfoLog");
-		glGetProgramInfoLog = (PFNGLGETPROGRAMINFOLOGPROC) SDL_GL_GetProcAddress("glGetProgramInfoLog");
-
 		// Read shader files
 		bool readSuccess = false;
 		vertexShaderSource = NULL;
@@ -84,7 +100,6 @@ Shader::Shader(char const * vertexShaderFile,  char const * fragmentShaderFile)
 				shdrLoaded = true;
 			} else {
 				// Errors while compiling shaders
-				shdrSupport = false;
 				glDeleteShader(vertexShader);
 				delete[] vertexShaderSource;
 				glDeleteShader(fragmentShader);
@@ -135,13 +150,6 @@ void Shader::disableShader() {
 	}
 }
 
-/**
-	Returns, whether shaders are supported by graphics hardware
-*/
-bool Shader::shadersSupported() {
-	return shdrSupport;
-}
-
 /**
     Returns, whether shaders could by loaded successfully 
 
@@ -333,3 +341,23 @@ bool Shader::isProgramLinked(GLuint program, char const * prefix)
 
 	return (linked != 0);
 }
+
+bool Shader::shdrSupport = false;
+
+PFNGLCREATESHADERPROC Shader::glCreateShader;
+PFNGLCREATEPROGRAMPROC Shader::glCreateProgram;
+PFNGLATTACHSHADERPROC Shader::glAttachShader;
+PFNGLCOMPILESHADERPROC Shader::glCompileShader;
+PFNGLUSEPROGRAMPROC Shader::glUseProgram;
+PFNGLDETACHSHADERPROC Shader::glDetachShader;
+PFNGLDELETESHADERPROC Shader::glDeleteShader;
+PFNGLLINKPROGRAMPROC Shader::glLinkProgram;
+PFNGLSHADERSOURCEPROC Shader::glShaderSource;
+PFNGLDELETEPROGRAMPROC Shader::glDeleteProgram;
+PFNGLGETUNIFORMLOCATIONPROC Shader::glGetUniformLocation;
+PFNGLUNIFORM1FPROC Shader::glUniform1f;
+
+PFNGLGETOBJECTPARAMETERIVARBPROC Shader::glGetObjectParameterivARB;
+PFNGLGETSHADERIVPROC Shader::glGetShaderiv;
+PFNGLGETSHADERINFOLOGPROC Shader::glGetShaderInfoLog;
+PFNGLGETPROGRAMINFOLOGPROC Shader::glGetProgramInfoLog;

src/opengl/shader.h

@@ -4,8 +4,9 @@
 // This file is part of SWE_CUDA (see file SWE_Block.cu for details).
 // 
 // Copyright (C) 2010,2011 Tobias Schnabel
+// Copyright (C) 2012      Sebastian Rettenberger
 // 
-// SWE_CUDA is free software: you can redristribute it and/or modify
+// SWE_CUDA 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.
@@ -30,17 +31,35 @@ public:
 	Shader(char const * vertexShaderFile,  char const * fragmentShaderFile) ;
 	~Shader();
 
-	// Check if shaders are supported
-	bool shadersSupported();
+	// Check if shaders are loaded
 	bool shadersLoaded();
 
 	// Shader control
 	void enableShader();
 	void disableShader();
 
+	/**
+	 * @return Location of the uniform variable
+	 */
+	GLint getUniformLocation(const char* name)
+	{
+		if (!shdrLoaded)
+			return -1;
+		return glGetUniformLocation(program, name);
+	}
+
+	/**
+	 * Set a uniform variable in the shader
+	 */
+	void setUniform(GLint location, GLfloat value)
+	{
+		if (location < 0)
+			return;
+		glUniform1f(location, value);
+	}
+
 private:	
 	// State flags
-	bool shdrSupport;
 	bool shdrLoaded;
 
 	// Helper functions
@@ -62,23 +81,27 @@ private:
 	// Shaders id
 	GLuint program;
 
+	/** Are shaders supported */
+	static bool shdrSupport;
+
 	// Shader extension function pointers
-	PFNGLCREATESHADERPROC glCreateShader;
-	PFNGLCREATEPROGRAMPROC glCreateProgram;
-	PFNGLATTACHSHADERPROC glAttachShader;
-	PFNGLCOMPILESHADERPROC glCompileShader;
-	PFNGLUSEPROGRAMPROC glUseProgram;
-	PFNGLDETACHSHADERPROC glDetachShader;
-	PFNGLDELETESHADERPROC glDeleteShader;
-	PFNGLLINKPROGRAMPROC glLinkProgram;
-	PFNGLSHADERSOURCEPROC glShaderSource;
-	PFNGLDELETEPROGRAMPROC glDeleteProgram;
+	static PFNGLCREATESHADERPROC glCreateShader;
+	static PFNGLCREATEPROGRAMPROC glCreateProgram;
+	static PFNGLATTACHSHADERPROC glAttachShader;
+	static PFNGLCOMPILESHADERPROC glCompileShader;
+	static PFNGLUSEPROGRAMPROC glUseProgram;
+	static PFNGLDETACHSHADERPROC glDetachShader;
+	static PFNGLDELETESHADERPROC glDeleteShader;
+	static PFNGLLINKPROGRAMPROC glLinkProgram;
+	static PFNGLSHADERSOURCEPROC glShaderSource;
+	static PFNGLDELETEPROGRAMPROC glDeleteProgram;
+	static PFNGLGETUNIFORMLOCATIONPROC glGetUniformLocation;
+	static PFNGLUNIFORM1FPROC glUniform1f;
 	
 	// Shader objects extension pointers
-	PFNGLGETOBJECTPARAMETERIVARBPROC glGetObjectParameterivARB;
-	PFNGLGETSHADERIVPROC glGetShaderiv;
-	PFNGLGETSHADERINFOLOGPROC glGetShaderInfoLog;
-	PFNGLGETPROGRAMINFOLOGPROC glGetProgramInfoLog;
-
+	static PFNGLGETOBJECTPARAMETERIVARBPROC glGetObjectParameterivARB;
+	static PFNGLGETSHADERIVPROC glGetShaderiv;
+	static PFNGLGETSHADERINFOLOGPROC glGetShaderInfoLog;
+	static PFNGLGETPROGRAMINFOLOGPROC glGetProgramInfoLog;
 };
 #endif

src/opengl/simulation.cu

@@ -18,7 +18,7 @@
 // along with SWE_CUDA.  If not, see <http://www.gnu.org/licenses/>.
 // =====================================================================
 #include "simulation.h"
-#include <stdlib.h>
+#include <cstring>
 #include "../SWE_BlockCUDA.hh"
 
 // Taken form FWaveCuda.h
@@ -37,14 +37,13 @@ const float dryTol = 100.;
 
 */
 Simulation::Simulation (int nx, int ny, float dx, float dy, 
-			SWE_Scenario* scene, SWE_VisInfo* visInfo, 
-                        SWE_BlockCUDA* _splash) 
+			SWE_Scenario* scene, SWE_BlockCUDA* _splash)
 : maxDim( (nx > ny) ? nx : ny ),
   maxCellSize( (dx > dy) ? dx : dy ),
   splash(_splash),
   fileNumber(0)
 {
-	loadNewScenario(scene, visInfo);
+	loadNewScenario(scene);
 }
 
 /** 
@@ -53,19 +52,12 @@ Simulation::Simulation (int nx, int ny, float dx, float dy,
 Simulation::~Simulation () {
 }
 
-void Simulation::loadNewScenario(SWE_Scenario* scene, SWE_VisInfo* visInfo) {
+void Simulation::loadNewScenario(SWE_Scenario* scene) {
 	myScenario = scene;
 	curTime = 0.0f;
 	isFirstStep = 1;
 	useFileInput = false;
-	Simulation::initBoundaries(myScenario);
-	if (visInfo != NULL) {
-		wScale = visInfo->waterVerticalScaling();
-		bScale = visInfo->bathyVerticalScaling();
-		bOffset = visInfo->bathyVerticalOffset();
-	} else {
-		getScalingApproximation(splash->getWaterHeight(), splash->getBathymetry());
-	}
+	initBoundaries(myScenario);
 }
 
 /**
@@ -79,7 +71,7 @@ void Simulation::runCuda(struct cudaGraphicsResource **vbo_resource, struct cuda
 {
     // map OpenGL buffer object for writing from CUDA
     float3 *dptr, *dptr2;
-	size_t num_bytes, num_bytes2; 
+	std::size_t num_bytes, num_bytes2;
     cudaGraphicsMapResources(1, vbo_resource, 0);
     
     cudaGraphicsResourceGetMappedPointer((void **)&dptr, &num_bytes,  
@@ -155,7 +147,7 @@ void Simulation::setBathBuffer(float* bath) {
 	for (int j=0; j<ny+1;j++) {
 		for (int i=0;i<nx+1;i++) {
 				bath[(j*(ny+1) + i)*6] = (float) i;
-				bath[(j*(ny+1) + i)*6 + 1]= bScale * 0.25f * (b[i][j]+b[i+1][j]+b[i][j+1]+b[i+1][j+1]) + bOffset;
+				bath[(j*(ny+1) + i)*6 + 1]= 0.25f * (b[i][j]+b[i+1][j]+b[i][j+1]+b[i+1][j+1]);
 				bath[(j*(ny+1) + i)*6 + 2] = (float) j;
 				bath[(j*(ny+1) + i)*6 + 3] = 0.0f;
 				bath[(j*(ny+1) + i)*6 + 4] = 0.0f;
@@ -248,11 +240,12 @@ void Simulation::calculateWaterSurface(float3* destBuffer) {
 	Gets called before simulation starts and determines the average,
 	mininimum and maximum values of the bathymetry and water surface data.
 	Uses latter values to estimate the scaling factors.
-	@param h	Fload2D array that holds water height
-	@param b	Fload2D array that holds bathymetry data
 */	
-void Simulation::getScalingApproximation(const Float2D& h, const Float2D& b)
+void Simulation::getScalingApproximation(float &bScale, float &bOffset, float &wScale)
 {
+	const Float2D &h = splash->getWaterHeight();
+	const Float2D &b = splash->getBathymetry();
+
 	// Minimum values
 	float minB, minH;
 	// Maximum values
@@ -282,7 +275,7 @@ void Simulation::getScalingApproximation(const Float2D& h, const Float2D& b)
 		}
 	}
 	bOffset = 0;	// This should be !=0 only in some artificial scenarios
-	bScale = -50/minB;
+	bScale = -100/minB;
 	cout << "Scaling of bathymetry: " << bScale << endl;
 
 	if ((maxH - minH) < 0.0001f) {
@@ -290,7 +283,7 @@ void Simulation::getScalingApproximation(const Float2D& h, const Float2D& b)
 	} else {
 		wScale = 1.0f;
 	}
-	wScale = (maxDim/40.0)*wScale;
+	wScale = (maxDim/50.0)*wScale;
 	cout << "Scaling of water level: " << wScale << endl;
 
 }
@@ -353,7 +346,7 @@ float scaleFunction(float val, float scale) {
  */
 __global__
 void kernelCalcVisBuffer(float3* visBuffer, const float* hd, const float* bd, 
-                         int nx, int ny, float scale)
+                         int nx, int ny)
 {
    int i = TILE_SIZE*blockIdx.x + threadIdx.x;
    int j = TILE_SIZE*blockIdx.y + threadIdx.y;
@@ -368,7 +361,7 @@ void kernelCalcVisBuffer(float3* visBuffer, const float* hd, const float* bd,
    	   else
    		   visBuffer[j*(ny+1) + i] = make_float3(
    				   i,
-   				   scale * 0.25 * (
+   				   0.25 * (
    						   hd[index]+hd[index + 1]+ hd[index2] + hd[index2 + 1] +
    						   bd[index]+bd[index + 1]+ bd[index2] + bd[index2 + 1]),
 				   j);
@@ -397,7 +390,7 @@ void Simulation::updateVisBuffer(float3* _visBuffer) {
 	// Interpolate cell centered h-values
 	dim3 dimBlock(TILE_SIZE,TILE_SIZE);
 	dim3 dimGrid((nx+TILE_SIZE)/TILE_SIZE,(ny+TILE_SIZE)/TILE_SIZE);
-	kernelCalcVisBuffer<<<dimGrid,dimBlock>>>(_visBuffer, hd, bd, nx, ny, wScale);
+	kernelCalcVisBuffer<<<dimGrid,dimBlock>>>(_visBuffer, hd, bd, nx, ny);
 }
 /**
 	Function used for debugging. Outputs the current visBuffer 

src/opengl/simulation.h

@@ -33,13 +33,13 @@ class Simulation {
   public:
     // Constructor + Destructor 
     Simulation (int nx, int ny, float dx, float dy, 
-                SWE_Scenario* scene, SWE_VisInfo* visInfo, SWE_BlockCUDA* init_splash);
+                SWE_Scenario* scene, SWE_BlockCUDA* init_splash);
     ~Simulation();
 
     // Restart simulation
     void restart();
     // Load new scenario after initialization
-    void loadNewScenario(SWE_Scenario* scene, SWE_VisInfo* visInfo);
+    void loadNewScenario(SWE_Scenario* scene);
     // Save simulation state to file
     void saveToFile();
     // Return the bathymetry data
@@ -51,6 +51,7 @@ class Simulation {
     void writeDebugOutput(float3* destBuffer = NULL);
 
   protected:
+  public:
 
     // Instance of SWE_BlockCUDA 
     SWE_BlockCUDA* splash;
@@ -63,8 +64,6 @@ class Simulation {
     int isFirstStep;
     // Maximum of cell sizes
     float maxCellSize;
-    // Scaling factors used by visualization
-    float bScale, bOffset, wScale;
     // Initialize boundaries defined by the scene
     void initBoundaries(SWE_Scenario* scene);
     // Initialize boundaries defined by an input file
@@ -79,7 +78,7 @@ class Simulation {
     // Compute normals of the water surface for shading
     void calculateNormals(float3* vertexBuffer, float3* destBuffer);
 
-    void getScalingApproximation(const Float2D& h, const Float2D& b);
+    void getScalingApproximation(float &bScale, float &bOffset, float &wScale);
 
     void updateVisBuffer(float3* _visBuffer);
     void debugVisBuffer(float3* _visBuffer);

src/opengl/text.h

@@ -89,7 +89,7 @@ public:
 			glGenTextures(1, &texture);
 			glBindTexture(GL_TEXTURE_2D, texture);
 			glTexImage2D(GL_TEXTURE_2D, 0, 4, surf->w, surf->h, 0, GL_BGRA,
-					GL_UNSIGNED_BYTE, surf->pixels );
+					GL_UNSIGNED_BYTE, surf->pixels);
 
 			/* GL_NEAREST looks horrible, if scaled... */
 			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);

src/opengl/vbo.cpp

+/**
+ * @file
+ * This file is part of SWE.
+ *
+ * @author Sebastian Rettenberger (rettenbs AT in.tum.de, http://www5.in.tum.de/wiki/index.php/Sebastian_Rettenberger,_M.Sc.)
+ *
+ * @section LICENSE
+ *
+ * SWE 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.
+ *
+ * SWE 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 SWE.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "vbo.h"
+#include "visualization.h"
+
+void VBO::init()
+{
+	if (glGenBuffers == 0L) {
+		// Load vbo extension
+
+		// Check OpenGL extension(s)
+		if (!Visualization::isExtensionSupported("GL_ARB_vertex_buffer_object")) {
+			tools::Logger::logger.printString("Vertex Buffer Objects Extension not supported! Exit..\n");
+			SDL_Quit();
+			exit(1);
+		}
+
+		// Load Vertex Buffer Extension
+		glGenBuffers = (PFNGLGENBUFFERSARBPROC) SDL_GL_GetProcAddress("glGenBuffersARB");
+		glBindBuffer = (PFNGLBINDBUFFERARBPROC) SDL_GL_GetProcAddress("glBindBufferARB");
+		glBufferData = (PFNGLBUFFERDATAARBPROC) SDL_GL_GetProcAddress("glBufferDataARB");
+		glDeleteBuffers = (PFNGLDELETEBUFFERSARBPROC) SDL_GL_GetProcAddress("glDeleteBuffersARB");
+	}
+
+	glGenBuffers(1, &name);
+}
+
+PFNGLGENBUFFERSARBPROC VBO::glGenBuffers = 0L;
+PFNGLBINDBUFFERARBPROC VBO::glBindBuffer = 0L;
+PFNGLBUFFERDATAARBPROC VBO::glBufferData = 0L;
+PFNGLDELETEBUFFERSARBPROC VBO::glDeleteBuffers = 0L;

src/opengl/vbo.h

+/**
+ * @file
+ * This file is part of SWE.
+ *
+ * @author Sebastian Rettenberger (rettenbs AT in.tum.de, http://www5.in.tum.de/wiki/index.php/Sebastian_Rettenberger,_M.Sc.)
+ *
+ * @section LICENSE
+ *
+ * SWE 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.
+ *
+ * SWE 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 SWE.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ * @section DESCRIPTION
+ *
+ * Handles a VertexBufferObject.
+ */
+#ifndef VBO_H
+#define VBO_H
+
+#include "../tools/Logger.hpp"
+#include <SDL_opengl.h>
+
+class VBO
+{
+private:
+	/** OpenGL name of the object */
+	GLuint name;
+
+public:
+	VBO()
+		: name(0)
+	{}
+
+	/**
+	 * Initializes the object
+	 */
+	void init();
+
+	/**
+	 * @return The OpenGL name of the buffer
+	 */
+	GLuint getName()
+	{
+		return name;
+	}
+
+	void setBufferData(GLsizei size, const void* data,
+			GLenum target = GL_ARRAY_BUFFER,
+			GLenum usage = GL_STATIC_DRAW)
+	{
+		glBindBuffer(target, name);
+		glBufferData(target, size, data, usage);
+		glBindBuffer(target, 0);
+	}
+
+	void bindBuffer(GLenum target = GL_ARRAY_BUFFER)
+	{
+		glBindBuffer(target, name);
+	}
+
+	/**
+	 * Frees all associated memory
+	 */
+	void finialize()
+	{
+		if (name) {
+			glDeleteBuffers(1, &name);
+			name = 0;
+		}
+	}
+
+private:
+	// VBO Extension Function Pointers
+	static PFNGLGENBUFFERSARBPROC glGenBuffers;					// VBO Name Generation Procedure
+	static PFNGLBINDBUFFERARBPROC glBindBuffer;					// VBO Bind Procedure
+	static PFNGLBUFFERDATAARBPROC glBufferData;					// VBO Data Loading Procedure
+	static PFNGLDELETEBUFFERSARBPROC glDeleteBuffers;			// VBO Deletion Procedure
+};
+
+#endif // VBO_H

src/opengl/vertex.glsl

@@ -18,6 +18,7 @@
 // along with SWE_CUDA.  If not, see <http://www.gnu.org/licenses/>.
 // =====================================================================
 
+uniform float scale = 10;
 varying vec3 N;
 varying vec4 ambient;
 varying vec4 worldCoordinates;
@@ -34,7 +35,7 @@ void main()
 	N = normalize(gl_NormalMatrix * gl_Normal);
 	
 	// Save world coordinates	
-	worldCoordinates = gl_Vertex;
+	worldCoordinates = gl_Vertex * scale;
 	
 	// Compute vertex position via internal transform function
 	gl_Position = ftransform();

src/opengl/visualization.h

@@ -26,6 +26,8 @@
 #include "camera.h"
 #include "simulation.h"
 #include "shader.h"
+#include "vbo.h"
+#include "../scenarios/SWE_VisInfo.h"
 #ifdef USESDLTTF
 #include "text.h"
 #endif // USESDLTTF
@@ -40,7 +42,8 @@ public:
 	// Constructor and Destructor
 	Visualization(int windowWidth, int windowHeight, const char* window_title, int _grid_xsize, int _grid_ysize);
 	~Visualization();
-	void init(Simulation* sim);
+
+	void init(Simulation &sim, SWE_VisInfo *visInfo = 0L);
 	void cleanUp();
 	Camera* camera;
 
@@ -51,49 +54,60 @@ public:
 	// Main rendering function
 	void renderDisplay();
 	
+	// Rescale water
+	void modifyWaterScaling(float factor);
+
 	// Helper functions
 	void setRenderingMode(RenderMode mode);
-	void updateBathymetryVBO(Simulation* sim);
 	void toggleRenderingMode();
 	int resizeWindow(int newWidth, int newHeight);
+
+	static bool isExtensionSupported(const char* szTargetExtension );
 private:	
 	// Init helper functions
 	void initSDL(int windowWidth, int windowHeight);
 	void initGLWindow(int width, int height);
 	void initGLDefaults();
 	void initCUDA();
-	bool IsExtensionSupported(const char* szTargetExtension );
+
+	void updateBathymetryVBO(Simulation &sim);
 
 	// Drawing functions
-	void DrawWaterSurface(GLuint vboID, GLuint vboNormals, GLuint verticesIndex);
-	void DrawBathymetry(GLuint vboID, GLuint verticesIndex);
+	void DrawWaterSurface();
+	void DrawBathymetry();
 	void DrawBottom();
 	int grid_xsize;
 	int grid_ysize;
 
 	// Vertex Buffer objects
-	GLuint vboBathymetry;
-	GLuint verticesIndex;
-	GLuint vboWaterSurface;
-	GLuint vboNormals;
+	VBO vboBathymetry;
+	VBO vboVerticesIndex;
+	VBO vboWaterSurface;
+	VBO vboNormals;
+	// Bathymetry color
+	VBO vboBathColor;
 
 	struct cudaGraphicsResource* cuda_vbo_watersurface;
 	struct cudaGraphicsResource* cuda_vbo_normals;
 
 	// VBO management functions
-	void createIndicesVBO(GLuint* vboID, int xsize, int ysize);
-	void createVertexVBO(GLuint* vboID, int size);
-	void createBathymetryVBO(GLuint* vboID, int size, Simulation* sim);
-	void createVertexVBO(GLuint* vboID, int size, struct cudaGraphicsResource **vbo_res, 
+	void createIndicesVBO(int xsize, int ysize);
+	void createVertexVBO(VBO &vbo, struct cudaGraphicsResource *&vbo_res,
 		unsigned int vbo_res_flags);
-	void deleteVBO(GLuint* vbo);
-	void deleteVBO(GLuint* vbo, struct cudaGraphicsResource *vbo_res);
+
+	void deleteCudaResource(struct cudaGraphicsResource *&vbo_res);
 
 	// Rendering mode
 	RenderMode renderMode;
 
-	// Shader helper class
-	Shader* shaders;
+	// Water/Bathymetry scaling/offset
+	float wScale, bScale, bOffset;
+
+	/** Location of the water scaling in the shader */
+	GLint wScaleLocation;
+
+	// Shaders
+	Shader* waterShader;
 
 #ifdef USESDLTTF
 	// Text helper class
@@ -104,10 +118,10 @@ private:
 	// Helper function
 	int coord(int x, int y, int width = -1);
 
-	// VBO Extension Function Pointers
-	PFNGLGENBUFFERSARBPROC glGenBuffers;					// VBO Name Generation Procedure
-	PFNGLBINDBUFFERARBPROC glBindBuffer;					// VBO Bind Procedure
-	PFNGLBUFFERDATAARBPROC glBufferData;					// VBO Data Loading Procedure
-	PFNGLDELETEBUFFERSARBPROC glDeleteBuffers;			// VBO Deletion Procedure
+	static void height2Color(float height, GLfloat *color);
+	static GLfloat mix(GLfloat a, GLfloat b, float factor)
+	{
+		return a * (1-factor) + b * factor;
+	}
 };
 #endif

src/scenarios/SWE_AsagiScenario_vis.hpp

+/**
+ * @file
+ * This file is part of SWE.
+ *
+ * @author Sebastian Rettenberger (rettenbs AT in.tum.de, http://www5.in.tum.de/wiki/index.php/Sebastian_Rettenberger,_M.Sc.)
+ *
+ * @section LICENSE
+ *
+ * SWE 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.
+ *
+ * SWE 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 SWE.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ * @section DESCRIPTION
+ *
+ * Rescale water height in small Japan scenario
+ */
+
+#ifndef SWEASAGISCENARIO_VIS_HPP_
+#define SWEASAGISCENARIO_VIS_HPP_
+
+#include "SWE_VisInfo.h"
+
+class SWE_AsagiJapanSmallVisInfo : public SWE_VisInfo
+{
+public:
+    virtual float waterVerticalScaling() { return 4.0f; };
+    virtual float bathyVerticalScaling() { return 0.010313f; };
+};
+
+#endif // SWEASAGISCENARIO_VIS_HPP_

src/scenarios/SWE_simple_scenarios_vis.h

@@ -28,7 +28,8 @@
  * Set bathymetry offset hence it is visible in the screen
  */
 class SWE_BathymetryDamBreakVisInfo : public SWE_VisInfo {
-	float bathyVerticalOffset() { return 2500.0f; };
+public:
+	float bathyVerticalOffset() { return 2450.0f; };
 };
 
 #endif

src/tools/Logger.cpp

+/**
+ * @file
+ * This file is part of SWE.
+ *
+ * @author Sebastian Rettenberger (rettenbs AT in.tum.de, http://www5.in.tum.de/wiki/index.php/Sebastian_Rettenberger,_M.Sc.)
+ *
+ * @section LICENSE
+ *
+ * SWE 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.
+ *
+ * SWE 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 SWE.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "Logger.hpp"
+
+tools::Logger tools::Logger::logger;

src/tools/Logger.hpp

@@ -3,6 +3,7 @@
  * This file is part of SWE.
  *
  * @author Alexander Breuer (breuera AT in.tum.de, http://www5.in.tum.de/wiki/index.php/Dipl.-Math._Alexander_Breuer)
+ * @author Sebastian Rettenberger (rettenbs AT in.tum.de, http://www5.in.tum.de/wiki/index.php/Sebastian_Rettenberger,_M.Sc.)
  *
  * @section LICENSE
  *
@@ -152,7 +153,7 @@ class tools::Logger {
      * @param i_largeDelimiter definition of the large delimiter.
      * @param i_indentation definition of the indentation (used in all messages, except welcome, start and finish).
      */
-    Logger( const int i_processRank = 0,
+    Logger( const int i_processRank = -1,
             const std::string i_programName = "SWE",
             const std::string i_welcomeMessage = "Welcome to",
             const std::string i_copyRights =  "\n\nSWE Copyright (C) 2012\n"
@@ -180,9 +181,13 @@ class tools::Logger {
       //set time to zero
       cpuTime = cpuCommTime = wallClockTime = 0.;
 
-      #ifndef USEMPI
-        printWelcomeMessage();
-      #endif
+#ifdef USEMPI
+      // determine local MPI rank
+      MPI_Comm_rank(MPI_COMM_WORLD, &processRank);
+#else
+      processRank = 0;
+      printWelcomeMessage();
+#endif
     }
 
     /**
@@ -503,6 +508,10 @@ class tools::Logger {
                 << i_cpuCommunicationTimeMessage << ": "
                 << cpuCommTime << " seconds"<< std::endl;
     }
+
+  public:
+    /** The logger all classes shoud use */
+    static Logger logger;
 };