override public void GenerateHeightField(int currentFrame, ExtendedHeightField extendedHeightField)
{
Profiler.BeginSample("Clear Height Field");
extendedHeightField.Clear();
Profiler.EndSample();
Profiler.BeginSample("Set Point Map");
waveParticles.setPointMap(currentFrame, ref pointMap);
Profiler.EndSample();
Profiler.BeginSample("Convolve Wave Particles");
convolveWaveParticles();
extendedHeightField.UpdateTexture(convolvedTexture);
Profiler.EndSample();
}
public void setPointMap(int currentFrame, ref ExtendedHeightField pointMap)
{
Profiler.BeginSample("Set Point Map Internal");
Profiler.BeginSample("Initialisation");
///
/// Initialise _splatTexture if it hasn't been yet.
///
if (_splatTexture == null)
{
if (antiAliased == AntiAlias.SCALE)
{
_splatTexture = new RenderTexture(pointMap.HoriRes * antiAliasFactor, pointMap.VertRes * antiAliasFactor, 24, RenderTextureFormat.ARGBFloat);
}
else
{
_splatTexture = new RenderTexture(pointMap.HoriRes, pointMap.VertRes, 24, RenderTextureFormat.ARGBFloat);
}
_splatTexture.enableRandomWrite = true;
}
if (!_splatTexture.IsCreated())
{
_splatTexture.Create();
}
Profiler.EndSample();
Profiler.BeginSample("Intitialise Splatter");
///
/// Initialise the SplatParticles GPU Compute Kernel to splat the particles to a texture
///
_gpuSplatParticles.SetTexture(kernel_SplatParticles, SPLAT_TEXTURE, _splatTexture);
_gpuSplatParticles.SetBuffer(kernel_SplatParticles, WAVE_PARTICLE_BUFFER, _waveParticlesBuffer);
_gpuSplatParticles.SetFloat(FIXED_DELTA_TIME, Time.fixedDeltaTime);
_gpuSplatParticles.SetInt(CURRENT_FRAME, currentFrame);
_gpuSplatParticles.SetFloat(PARTICLE_SPEED, WaveParticle.PARTICLE_SPEED);
_gpuSplatParticles.SetInt(HORI_RES, pointMap.HoriRes);
_gpuSplatParticles.SetInt(VERT_RES, pointMap.VertRes);
_gpuSplatParticles.SetFloat(PLANE_WIDTH, pointMap.Width);
_gpuSplatParticles.SetFloat(PLANE_HEIGHT, pointMap.Height);
_gpuSplatParticles.SetInt(ANTI_ALIASED, (int)antiAliased);
_gpuSplatParticles.SetInt(ANTI_ALIAS_FACTOR, antiAliasFactor);
///
/// Dispatch the kernel that splats wave particles to the _splatTexture
///
_gpuSplatParticles.Dispatch(kernel_SplatParticles, ((int)_particleContainerSize) / THREAD_GROUPS_X, 1, 1);
Profiler.EndSample();
Profiler.BeginSample("Do the splatting");
if (antiAliased == AntiAlias.SCALE)
{
///
/// As we have SCALE anti-aliasing, we need to downscale the texture to a new one.
///
downsampleMaterial.SetInt(DOWNSAMPLE_ANTI_ALIAS_FACTOR_ID, antiAliasFactor);
downsampleMaterial.SetInt(DOWNSAMPLE_TEXTURE_WIDTH_ID, pointMap.HoriRes);
downsampleMaterial.SetInt(DOWNSAMPLE_TEXTURE_HEIGHT_ID, pointMap.VertRes);
if (outputTexture == null || downscaleRenderTexture == null)
{
pointMap.InitialiseTexture(out outputTexture, name: "Downscale Output Texture");
// Set the texture to the active one so that it's values can be read back out to the pointMapTexture
downscaleRenderTexture = new RenderTexture(pointMap.HoriRes, pointMap.VertRes, 24, RenderTextureFormat.ARGBFloat);
}
if (!downscaleRenderTexture.IsCreated())
{
downscaleRenderTexture.Create();
}
RenderTexture.active = downscaleRenderTexture;
GL.Clear(true, true, Color.black);
// Blit what is stored in the _splatTexture to downscaleRenderTexture
Graphics.Blit(_splatTexture, downscaleRenderTexture, downsampleMaterial);
// Read back values from the render texture
outputTexture.ReadPixels(new Rect(0, 0, outputTexture.width, outputTexture.height), 0, 0, false);
outputTexture.Apply();
RenderTexture.active = _splatTexture;
downscaleRenderTexture.Release();
GL.Clear(true, true, Color.black);
RenderTexture.active = null;
pointMap.UpdateTexture(outputTexture);
}
else
{
// Copy RenderTexture to a Texture2D
RenderTexture.active = _splatTexture;
if (outputTexture == null)
{
pointMap.InitialiseTexture(out outputTexture, name: "Point Map Texture");
}
// Read back values from the render texture
outputTexture.ReadPixels(new Rect(0, 0, outputTexture.width, outputTexture.height), 0, 0, false);
outputTexture.Apply();
pointMap.UpdateTexture(outputTexture);
GL.Clear(true, true, Color.black);
RenderTexture.active = null;
}
Profiler.EndSample();
Profiler.EndSample();
}
