protected override void InitializeComputeShader()
{
width = Screen.width;
height = Screen.height;
solverTex = RenderUtility.CreateRenderTexture(width >> lod, height >> lod, 0, RenderTextureFormat.ARGBFloat, TextureWrapMode.Clamp, FilterMode.Point, solverTex);
densityTex = RenderUtility.CreateRenderTexture(width >> lod, height >> lod, 0, RenderTextureFormat.RHalf, TextureWrapMode.Clamp, FilterMode.Point, densityTex);
velocityTex = RenderUtility.CreateRenderTexture(width >> lod, height >> lod, 0, RenderTextureFormat.RGHalf, TextureWrapMode.Clamp, FilterMode.Point, velocityTex);
prevTex = RenderUtility.CreateRenderTexture(width >> lod, height >> lod, 0, RenderTextureFormat.ARGBFloat, TextureWrapMode.Clamp, FilterMode.Point, prevTex);
Shader.SetGlobalTexture(solverTexId, solverTex);
}