private HDRSkyEditorError ComputeAndDisplaySettings(ref HDRSkySettings res)
{
isSettingsDisplayed = EditorGUILayout.Foldout(isSettingsDisplayed, GUI_NAME_IS_SETTINGS_DISPLAYED);
if (isSettingsDisplayed)
{
EditorGUILayout.BeginVertical();
++EditorGUI.indentLevel;
res.colorTemperatureSource = (res.colorTemperatureSource == 0) ? 6500 : res.colorTemperatureSource;
res.colorTemperatureDestination = (res.colorTemperatureDestination == 0) ? 6500 : res.colorTemperatureDestination;
res.colorTemperatureSource = Mathf.Clamp(EditorGUILayout.FloatField(GUI_NAME_COLOR_TEMPERATURE_SOURCE, res.colorTemperatureSource), 1000.0f, 10000.0f);
res.colorTemperatureDestination = Mathf.Clamp(EditorGUILayout.FloatField(GUI_NAME_COLOR_TEMPERATURE_DESTINATION, res.colorTemperatureDestination), 1000.0f, 10000.0f);
--EditorGUI.indentLevel;
EditorGUILayout.EndVertical();
}
return(HDRSkyEditorError.None);
}
private static HDRSkyEditorError SaveEXRFromTextureDestination(Texture2D textureDestination, HDRSkySettings settings)
{
// Returns path relative to project base directory.
// Required for AssetDatabase.CreateAsset() which Expects paths relative to project base.
string path = EditorUtility.SaveFilePanelInProject(SAVE_DIALOGUE, DEFAULT_FILENAME, FILE_EXTENSION, "");
if (path.Length == 0)
{
return(HDRSkyEditorError.NoSavePathSpecified);
}
byte[] bytes = textureDestination.EncodeToEXR(Texture2D.EXRFlags.CompressZIP);
File.WriteAllBytes(path, bytes);
return(HDRSkyEditorError.None);
}
private static HDRSkyEditorError ComputeTextureDestinationFromSource(ref Texture2D textureDestination, ref Color[] textureDestinationData, ref Texture2D textureSource, ref Color[] textureSourceData, HDRSkySettings settings)
{
if (textureSource == null)
{
return(HDRSkyEditorError.NoTextureAssigned);
}
if (textureDestinationData == null || textureDestinationData.Length != textureSourceData.Length)
{
textureDestinationData = new Color[textureSourceData.Length];
}
const bool isGenerateMipmapsEnabled = false;
textureDestination = new Texture2D(
textureSource.width,
textureSource.height,
textureSource.format,
isGenerateMipmapsEnabled
);
HDRSkyEditorError error = HDRSkyEditorError.None;
Matrix4x4 chromaticAdaptationMatrix = ComputeVonKriesChromaticAdaptationMatrixFromTemperature(settings.colorTemperatureDestination, settings.colorTemperatureSource);
Vector3 tmpVector;
Color tmpColor;
for (int y = 0, ylen = textureSource.height; y < ylen; ++y)
{
for (int x = 0, xlen = textureSource.width; x < xlen; ++x)
{
int i = y * xlen + x;
tmpVector.x = textureSourceData[i].r;
tmpVector.y = textureSourceData[i].g;
tmpVector.z = textureSourceData[i].b;
tmpVector = chromaticAdaptationMatrix.MultiplyVector(tmpVector);
tmpColor.r = tmpVector.x;
tmpColor.g = tmpVector.y;
tmpColor.b = tmpVector.z;
tmpColor.a = 1.0f;
textureDestinationData[i] = tmpColor;
}
}
if (error != HDRSkyEditorError.None)
{
return(error);
}
textureDestination.SetPixels(textureDestinationData, 0);
textureDestination.Apply(isGenerateMipmapsEnabled);
return(HDRSkyEditorError.None);
}
