/// <summary>
/// Performs tone mapping on the specified render target
/// </summary>
/// <param name="source">The source render target</param>
/// <param name="result">The render target to which the result will be output</param>
/// <param name="depthTexture">The render target containing scene depth</param>
/// <param name="camera">The camera used to render the scene</param>
/// <param name="dofType">The type of DOF effect to apply</param>
/// <param name="focalDistance">The distance to the camera focal point</param>
/// <param name="focalWidth">The width of the camera focal point</param>
public void DepthOfField(RenderTarget2D source, RenderTarget2D result, RenderTarget2D depthTexture, Camera camera, DepthOfFieldType dofType, float focalDistance, float focalWidth, float time)
{
if (dofType == DepthOfFieldType.DiscBlur)
{
// Scale tap offsets based on render target size
float dx = 0.5f / (float)source.Width;
float dy = 0.5f / (float)source.Height;
// Generate the texture coordinate offsets for our disc
Vector2[] discOffsets = new Vector2[12];
discOffsets[0] = new Vector2(-0.326212f * dx, -0.40581f * dy);
discOffsets[1] = new Vector2(-0.840144f * dx, -0.07358f * dy);
discOffsets[2] = new Vector2(-0.840144f * dx, 0.457137f * dy);
discOffsets[3] = new Vector2(-0.203345f * dx, 0.620716f * dy);
discOffsets[4] = new Vector2(0.96234f * dx, -0.194983f * dy);
discOffsets[5] = new Vector2(0.473434f * dx, -0.480026f * dy);
discOffsets[6] = new Vector2(0.519456f * dx, 0.767022f * dy);
discOffsets[7] = new Vector2(0.185461f * dx, -0.893124f * dy);
discOffsets[8] = new Vector2(0.507431f * dx, 0.064425f * dy);
discOffsets[9] = new Vector2(0.89642f * dx, 0.412458f * dy);
discOffsets[10] = new Vector2(-0.32194f * dx, -0.932615f * dy);
discOffsets[11] = new Vector2(-0.791559f * dx, -0.59771f * dy);
// Set array of offsets
dofEffect.Parameters["g_vFilterTaps"].SetValue(discOffsets);
dofEffect.CurrentTechnique = dofEffect.Techniques["DOFDiscBlur"];
dofEffect.Parameters["g_fFocalDistance"].SetValue(focalDistance);
dofEffect.Parameters["g_fFocalWidth"].SetValue(focalWidth / 2.0f);
dofEffect.Parameters["g_fFarClip"].SetValue(camera.far);
dofEffect.Parameters["g_fAttenuation"].SetValue(1);
dofEffect.Parameters["time"].SetValue(time); //wave effect
RenderTarget2D[] sources = doubleSourceArray;
sources[0] = source;
sources[1] = depthTexture;
PostProcess(sources, result, dofEffect);
}
else
{
// Downscale to 1/16th size and blur
IntermediateTexture downscaleTexture = GetIntermediateTexture(source.Width / 4, source.Height / 4, SurfaceFormat.Color);
GenerateDownscaleTargetSW(source, downscaleTexture.RenderTarget);
// For the "dumb" DOF type just do a blur, otherwise use a special blur
// that takes depth into account
if (dofType == DepthOfFieldType.BlurBuffer)
Blur(downscaleTexture.RenderTarget, downscaleTexture.RenderTarget, 2.5f);
else if (dofType == DepthOfFieldType.BlurBufferDepthCorrection)
DepthBlur(downscaleTexture.RenderTarget, downscaleTexture.RenderTarget, depthTexture, 2.5f);
dofEffect.CurrentTechnique = dofEffect.Techniques["DOFBlurBuffer"];
dofEffect.Parameters["g_fFocalDistance"].SetValue(focalDistance);
dofEffect.Parameters["g_fFocalWidth"].SetValue(focalWidth / 2.0f);
dofEffect.Parameters["g_fFarClip"].SetValue(camera.far);
dofEffect.Parameters["g_fAttenuation"].SetValue(1.0f);
RenderTarget2D[] sources = tripleSourceArray;
sources[0] = source;
sources[1] = downscaleTexture.RenderTarget;
sources[2] = depthTexture;
PostProcess(sources, result, dofEffect);
downscaleTexture.InUse = false;
}
}
private static extern void Internal_settype(IntPtr thisPtr, DepthOfFieldType value);
/// <summary>
/// Performs tone mapping on the specified render target
/// </summary>
/// <param name="source">The source render target</param>
/// <param name="result">The render target to which the result will be output</param>
/// <param name="depthTexture">The render target containing scene depth</param>
/// <param name="camera">The camera used to render the scene</param>
/// <param name="dofType">The type of DOF effect to apply</param>
/// <param name="focalDistance">The distance to the camera focal point</param>
/// <param name="focalWidth">The width of the camera focal point</param>
public void DepthOfField(RenderTarget2D source, RenderTarget2D result, RenderTarget2D depthTexture, Camera camera, DepthOfFieldType dofType, float focalDistance, float focalWidth, float time)
{
if (dofType == DepthOfFieldType.DiscBlur)
{
// Scale tap offsets based on render target size
float dx = 0.5f / (float)source.Width;
float dy = 0.5f / (float)source.Height;
// Generate the texture coordinate offsets for our disc
Vector2[] discOffsets = new Vector2[12];
discOffsets[0] = new Vector2(-0.326212f * dx, -0.40581f * dy);
discOffsets[1] = new Vector2(-0.840144f * dx, -0.07358f * dy);
discOffsets[2] = new Vector2(-0.840144f * dx, 0.457137f * dy);
discOffsets[3] = new Vector2(-0.203345f * dx, 0.620716f * dy);
discOffsets[4] = new Vector2(0.96234f * dx, -0.194983f * dy);
discOffsets[5] = new Vector2(0.473434f * dx, -0.480026f * dy);
discOffsets[6] = new Vector2(0.519456f * dx, 0.767022f * dy);
discOffsets[7] = new Vector2(0.185461f * dx, -0.893124f * dy);
discOffsets[8] = new Vector2(0.507431f * dx, 0.064425f * dy);
discOffsets[9] = new Vector2(0.89642f * dx, 0.412458f * dy);
discOffsets[10] = new Vector2(-0.32194f * dx, -0.932615f * dy);
discOffsets[11] = new Vector2(-0.791559f * dx, -0.59771f * dy);
// Set array of offsets
dofEffect.Parameters["g_vFilterTaps"].SetValue(discOffsets);
dofEffect.CurrentTechnique = dofEffect.Techniques["DOFDiscBlur"];
dofEffect.Parameters["g_fFocalDistance"].SetValue(focalDistance);
dofEffect.Parameters["g_fFocalWidth"].SetValue(focalWidth / 2.0f);
dofEffect.Parameters["g_fFarClip"].SetValue(camera.far);
dofEffect.Parameters["g_fAttenuation"].SetValue(1);
dofEffect.Parameters["time"].SetValue(time); //wave effect
RenderTarget2D[] sources = doubleSourceArray;
sources[0] = source;
sources[1] = depthTexture;
PostProcess(sources, result, dofEffect);
}
else
{
// Downscale to 1/16th size and blur
IntermediateTexture downscaleTexture = GetIntermediateTexture(source.Width / 4, source.Height / 4, SurfaceFormat.Color);
GenerateDownscaleTargetSW(source, downscaleTexture.RenderTarget);
// For the "dumb" DOF type just do a blur, otherwise use a special blur
// that takes depth into account
if (dofType == DepthOfFieldType.BlurBuffer)
{
Blur(downscaleTexture.RenderTarget, downscaleTexture.RenderTarget, 2.5f);
}
else if (dofType == DepthOfFieldType.BlurBufferDepthCorrection)
{
DepthBlur(downscaleTexture.RenderTarget, downscaleTexture.RenderTarget, depthTexture, 2.5f);
}
dofEffect.CurrentTechnique = dofEffect.Techniques["DOFBlurBuffer"];
dofEffect.Parameters["g_fFocalDistance"].SetValue(focalDistance);
dofEffect.Parameters["g_fFocalWidth"].SetValue(focalWidth / 2.0f);
dofEffect.Parameters["g_fFarClip"].SetValue(camera.far);
dofEffect.Parameters["g_fAttenuation"].SetValue(1.0f);
RenderTarget2D[] sources = tripleSourceArray;
sources[0] = source;
sources[1] = downscaleTexture.RenderTarget;
sources[2] = depthTexture;
PostProcess(sources, result, dofEffect);
downscaleTexture.InUse = false;
}
}
