private void UpdateAtlas(List <SignedDistanceField> sdfDefinitionsPassed, GraphicsDevice graphics,
SpriteBatch spriteBatch, DeferredEnvironmentMapRenderModule environmentMapRenderModule, LightAccumulationModule lightAccumulationModule)
{
if (sdfDefinitionsPassed.Count < 1)
{
return;
}
bool updateAtlas = false;
if (_signedDistanceFieldDefinitions == null || sdfDefinitionsPassed.Count !=
_signedDistanceFieldDefinitionsCount)
{
_signedDistanceFieldDefinitionsCount = 0;
updateAtlas = true;
}
{
for (int i = 0; i < sdfDefinitionsPassed.Count; i++)
{
bool found = false;
for (int j = 0; j < _signedDistanceFieldDefinitionsCount; j++)
{
if (sdfDefinitionsPassed[i] == _signedDistanceFieldDefinitions[j])
{
found = true;
break;
if (sdfDefinitionsPassed[i].NeedsToBeGenerated)
{
throw new Exception("test");
}
}
}
if (!found)
{
_signedDistanceFieldDefinitions[_signedDistanceFieldDefinitionsCount] = sdfDefinitionsPassed[i];
sdfDefinitionsPassed[i].ArrayIndex = _signedDistanceFieldDefinitionsCount;
_signedDistanceFieldDefinitionsCount++;
updateAtlas = true;
}
}
}
//Now build the atlas
if (!updateAtlas)
{
return;
}
_atlasRenderTarget2D?.Dispose();
int x = 0, y = 0;
//Count size
for (int i = 0; i < _signedDistanceFieldDefinitionsCount; i++)
{
x = (int)Math.Max(_signedDistanceFieldDefinitions[i].SdfTexture.Width, x);
_signedDistanceFieldDefinitions[i].TextureResolution.W = y;
y += _signedDistanceFieldDefinitions[i].SdfTexture.Height;
_volumeTexResolutionArray[i] = _signedDistanceFieldDefinitions[i].TextureResolution;
_volumeTexSizeArray[i] = _signedDistanceFieldDefinitions[i].VolumeSize;
}
//todo: Check if we can use half here
_atlasRenderTarget2D = new RenderTarget2D(graphics, x, y, false, SurfaceFormat.Single, DepthFormat.None);
graphics.SetRenderTarget(_atlasRenderTarget2D);
spriteBatch.Begin(SpriteSortMode.Deferred, BlendState.Opaque, SamplerState.PointClamp);
for (int i = 0; i < _signedDistanceFieldDefinitionsCount; i++)
{
spriteBatch.Draw(_signedDistanceFieldDefinitions[i].SdfTexture,
new Rectangle(0, (int)_signedDistanceFieldDefinitions[i].TextureResolution.W, _signedDistanceFieldDefinitions[i].SdfTexture.Width, _signedDistanceFieldDefinitions[i].SdfTexture.Height), Color.White);
}
spriteBatch.End();
//Atlas
VolumeTex = _atlasRenderTarget2D;
_volumeTexSizeParam.SetValue(_volumeTexSizeArray);
_volumeTexResolutionParam.SetValue(_volumeTexResolutionArray);
lightAccumulationModule.PointLightRenderModule.deferredPointLightParameter_VolumeTexParam.SetValue(_atlasRenderTarget2D);
lightAccumulationModule.PointLightRenderModule.deferredPointLightParameter_VolumeTexSizeParam.SetValue(_volumeTexSizeArray);
lightAccumulationModule.PointLightRenderModule.deferredPointLightParameter_VolumeTexResolution.SetValue(_volumeTexResolutionArray);
environmentMapRenderModule.ParamVolumeTexParam.SetValue(_atlasRenderTarget2D);
environmentMapRenderModule.ParamVolumeTexSizeParam.SetValue(_volumeTexSizeArray);
environmentMapRenderModule.ParamVolumeTexResolution.SetValue(_volumeTexResolutionArray);
}
public void UpdateDistanceFieldTransformations(List <BasicEntity> entities, List <SignedDistanceField> sdfDefinitions, DeferredEnvironmentMapRenderModule environmentMapRenderModule, GraphicsDevice graphics, SpriteBatch spriteBatch, LightAccumulationModule lightAccumulationModule)
{
if (!GameSettings.sdf_draw)
{
return;
}
//First of all let's build the atlas
UpdateAtlas(sdfDefinitions, graphics, spriteBatch, environmentMapRenderModule, lightAccumulationModule);
int i = 0;
for (var index = 0; index < entities.Count; index++)
{
BasicEntity entity = entities[index];
if (entity.SignedDistanceField.IsUsed)
{
_instanceInverseMatrixArray[i] = entity.WorldTransform.InverseWorld;
_instanceScaleArray[i] = entity.WorldTransform.Scale;
_instanceSDFIndexArray[i] = entity.SignedDistanceField.ArrayIndex;
i++;
if (i >= InstanceMaxCount)
{
break;
}
}
}
_instancesCount = i;
//TODO: Check for change
//Submit
//Instances
_instanceInverseMatrixArrayParam.SetValue(_instanceInverseMatrixArray);
_instanceScaleArrayParam.SetValue(_instanceScaleArray);
_instanceSDFIndexArrayParam.SetValue(_instanceSDFIndexArray);
_instancesCountParam.SetValue((float)_instancesCount);
lightAccumulationModule.PointLightRenderModule.deferredPointLightParameter_InstanceInverseMatrix.SetValue(_instanceInverseMatrixArray);
lightAccumulationModule.PointLightRenderModule.deferredPointLightParameter_InstanceScale.SetValue(_instanceScaleArray);
lightAccumulationModule.PointLightRenderModule.deferredPointLightParameter_InstanceSDFIndex.SetValue(_instanceSDFIndexArray);
lightAccumulationModule.PointLightRenderModule.deferredPointLightParameter_InstancesCount.SetValue((float)_instancesCount);
environmentMapRenderModule.ParamInstanceInverseMatrix.SetValue(_instanceInverseMatrixArray);
environmentMapRenderModule.ParamInstanceScale.SetValue(_instanceScaleArray);
environmentMapRenderModule.ParamInstanceSDFIndex.SetValue(_instanceSDFIndexArray);
environmentMapRenderModule.ParamInstancesCount.SetValue((float)_instancesCount);
}