Stable version v1.

Colors/Natural.cmd

@@ -0,0 +1 @@
+"../DuEngine/x64/Release/DuEngine.exe" %~n0.ini

Colors/Natural.glsl

@@ -0,0 +1,24 @@
+// https://www.shadertoy.com/view/MlcGD7
+// see also full black body spectrum: https://www.shadertoy.com/view/4tdGWM
+// deeper in fluids: https://www.shadertoy.com/view/XldGDM
+
+void mainImage( out vec4 O,  vec2 U )
+{
+    U /= iResolution.xy;
+    float y = 2.* U.y; 
+
+    O = 
+    // secret 1 for natural colors for luminous phenomena:
+    // - real-life color spectrum is never zero in any channel
+    // - intensities are 0 to infinity
+    // - captors (camera,eye) saturates early
+	y > 1. ? vec4(1,1./4.,1./16.,1) * exp(4.*U.x - 1.)  // i.e. exp(T) * exp(-z)
+
+    // secret 2 for natural colors for volumetric phenomena:
+    // - transparency decrease as the power of distance ( T^l )
+    // - T value varies with frequency ( i.e. color channel )
+    // - real life transparency is never exactly 1 at any frequency
+   : pow(vec4(.1, .7, .8, 1), vec4(4.*U.x));
+
+
+}

Colors/Natural.ini

@@ -0,0 +1,3 @@
+shader_frag		=	$Name.glsl
+channels_count	=	1
+iChannel0_type	=	London

Colors/_create.cmd

@@ -0,0 +1 @@
+python "../Scripts/_create.py"

Distortion/_create.cmd

@@ -1 +1 @@
-"python" "../Scripts/_create.py"
+python "../Scripts/_create.py"

DuEngine/DuEngine.cpp

@@ -91,13 +91,13 @@ void DuEngine::start(int argc, char* argv[]) {
 	m_path = new PathManager(std::string(argv[0]), m_config);
 
 	// setup the default m_window width and height
-	m_defaultWidth = m_config->GetIntWithDefault("window_width", m_defaultWidth);
-	m_defaultHeight = m_config->GetIntWithDefault("window_height", m_defaultHeight);
-	string _windowTitle = m_config->GetStringWithDefault("window_title", "DuRenderer | " + m_config->GetName());
+	m_defaultWidth = m_config->GetIntWithDefault("window_width", m_config->GetIntWithDefault("width", m_defaultWidth));
+	m_defaultHeight = m_config->GetIntWithDefault("window_height", m_config->GetIntWithDefault("height", m_defaultHeight));
+	string _windowTitle = m_config->GetStringWithDefault("window_title", m_config->GetStringWithDefault("title", "DuRenderer | " + m_config->GetName()));
 	m_window->init(argc, argv, m_defaultWidth, m_defaultHeight, _windowTitle);
 
 	// setup recording
-	m_recording = m_config->GetBoolWithDefault("recording", m_recording);
+	m_recording = m_config->GetBoolWithDefault("record", m_config->GetBoolWithDefault("recording", m_recording));
 	m_recordPath = m_config->GetStringWithDefault("record_path", m_config->GetName());
 	m_recordStart = m_config->GetIntWithDefault("record_start", m_recordStart);
 	m_recordEnd = m_config->GetIntWithDefault("record_end", m_recordEnd);

DuEngine/DuScene.cpp

@@ -32,8 +32,7 @@ void DuEngine::initScene() {
 		auto channels_count = m_config->GetIntWithDefault(prefix + "channels_count", 0);
 		for (int i = 0; i < channels_count; ++i) {
 			string iPrefix = prefix + "iChannel" + to_string(i) + "_";
-			auto type = m_config->GetStringWithDefault(iPrefix + "type", "unknown");
-			std::transform(type.begin(), type.end(), type.begin(), ::tolower);
+			auto type = toLower(m_config->GetStringWithDefault(iPrefix + "type", "unknown"));
 			auto fileName = m_path->getResource(iPrefix + "tex");
 			Texture::QueryFileNameByType(type, fileName, m_path->getPresetPath());
 			auto textureType = Texture::QueryType(type);

DuEngine/DuUtils.cpp

@@ -8,7 +8,7 @@
 #include "stdafx.h"
 #include "DuUtils.h"
 
-bool dirExists(const std::string& dirName_in) {
+bool dirExists(const string& dirName_in) {
 	DWORD ftyp = GetFileAttributesA(dirName_in.c_str());
 	if (ftyp == INVALID_FILE_ATTRIBUTES)
 		return false;  //something is wrong with your path!
@@ -61,6 +61,47 @@ string repeatstring(string s, int cnt) {
 	return res; 
 }
 
+string toLower(const string & value) {
+	string result;
+	result.resize(value.size());
+	std::transform(value.begin(), value.end(), result.begin(), ::tolower);
+	return result;
+}
+
+bool toBool(const string & str) {
+	string value = toLower(str);
+	if (value == "false")
+		return false;
+	else if (value == "true")
+		return true;
+	warning("Could not parse boolean value " + str);
+	return false; 
+}
+
+int toInt(const string & str) {
+	char *end_ptr = nullptr;
+	int result = (int)strtol(str.c_str(), &end_ptr, 10);
+	if (*end_ptr != '\0')
+		warning("Could not parse integer value \"%s\"" + str);
+	return result;
+}
+
+unsigned int toUInt(const string & str) {
+	char *end_ptr = nullptr;
+	unsigned int result = (int)strtoul(str.c_str(), &end_ptr, 10);
+	if (*end_ptr != '\0')
+		warning("Could not parse integer value \"%s\"" + str);
+	return result;
+}
+
+float toFloat(const string & str) {
+	char *end_ptr = nullptr;
+	float result = (float)strtof(str.c_str(), &end_ptr);
+	if (*end_ptr != '\0')
+		warning("Could not parse floating point value \"%s\"" + str);;
+	return result;
+}
+
 void onError() {
 	system("pause");
 	exit(EXIT_FAILURE);

DuEngine/DuUtils.h

@@ -10,12 +10,18 @@ void dump(char* pszFormat, ...);
 void onError();
 
 // file systems
-bool dirExists(const std::string& dirName_in);
+bool dirExists(const string& dirName_in);
 string getTimeForFileName();
 
 // string utilities
 string repeatstring(string s, int cnt);
 
+string toLower(const string &value);
+bool toBool(const string &str);
+int toInt(const string &str);
+unsigned int toUInt(const string &str);
+float toFloat(const string &str);
+
 // design pattern utilities
 class Singleton
 {

DuEngine/stdafx.h

@@ -57,7 +57,7 @@ const float PI = 3.14159265359f;
 #define DEBUG_VIDEO 0
 #define DEBUG_PATH 0
 #define DEBUG_TEXTURE_DEPRECATED_FILTERING 0
-#define VERBOSE_OUTPUT 1
+#define VERBOSE_OUTPUT 0
 
 #if COMPILE_WITH_SH
 #include "SHUtils.h"

DuShaders/0-5OrdersSphericalHarmonics.cmd

@@ -0,0 +1 @@
+"../DuEngine/x64/Release/DuEngine.exe" %~n0.ini