private void OnWillRenderObject()
{
//HeightMapを垂らす
var heightPaint = canvas.GetPaintHeightTexture(materialName);
if (heightPaint == null)
{
var newHeightPaint = new RenderTexture(CREATE_TEXTURE_SIZE, CREATE_TEXTURE_SIZE, 0);
InitHeightMap(newHeightPaint);
canvas.SetPaintHeightTexture(materialName, newHeightPaint);
heightPaint = newHeightPaint;
}
var heightTmp = RenderTexture.GetTemporary(heightPaint.width, heightPaint.height);
heightFluid.SetFloat("_ScaleFactor", flowingForce);
heightFluid.SetFloat("_Viscosity", viscosity);
heightFluid.SetVector("_FlowDirection", flowDirection.normalized);
Graphics.Blit(heightPaint, heightTmp, heightFluid);
Graphics.Blit(heightTmp, heightPaint);
RenderTexture.ReleaseTemporary(heightTmp);
//HeightMapからMainTexture生成
var mainPaint = canvas.GetPaintMainTexture(materialName);
if (mainPaint == null)
{
var newMainPaint = new RenderTexture(CREATE_TEXTURE_SIZE, CREATE_TEXTURE_SIZE, 0);
if (canvas.GetMainTexture(materialName) != null)
{
var tmp = RenderTexture.GetTemporary(newMainPaint.width, newMainPaint.height, 0);
Graphics.Blit(canvas.GetMainTexture(materialName), tmp);
Graphics.Blit(tmp, newMainPaint);
RenderTexture.ReleaseTemporary(tmp);
}
canvas.SetPaintMainTexture(materialName, newMainPaint);
mainPaint = newMainPaint;
}
var mainTmp = RenderTexture.GetTemporary(mainPaint.width, mainPaint.height);
height2Color.SetTexture("_ColorMap", mainPaint);
Graphics.Blit(heightPaint, mainTmp, height2Color);
Graphics.Blit(mainTmp, mainPaint);
RenderTexture.ReleaseTemporary(mainTmp);
//HeightMapからNormalMap生成
var normalPaint = canvas.GetPaintNormalTexture(materialName);
if (normalPaint == null)
{
var newNormalPaint = new RenderTexture(CREATE_TEXTURE_SIZE, CREATE_TEXTURE_SIZE, 0);
if (canvas.GetNormalTexture(materialName) != null)
{
var tmp = RenderTexture.GetTemporary(newNormalPaint.width, newNormalPaint.height, 0);
Graphics.Blit(canvas.GetNormalTexture(materialName), tmp);
Graphics.Blit(tmp, newNormalPaint);
RenderTexture.ReleaseTemporary(tmp);
}
canvas.SetPaintNormalTexture(materialName, newNormalPaint);
normalPaint = newNormalPaint;
}
var normalTmp = RenderTexture.GetTemporary(normalPaint.width, normalPaint.height);
height2Normal.SetTexture("_BumpMap", normalPaint);
height2Normal.SetFloat("_NormalScaleFactor", normalScaleFactor);
Graphics.Blit(heightPaint, normalTmp, height2Normal);
Graphics.Blit(normalTmp, normalPaint);
RenderTexture.ReleaseTemporary(normalTmp);
}