public static Texture2D RenderNormalMap(Material targetMaterial, int waveStyle, bool useCompression = false, Texture2D customNormalTex = null)
{
//If a custom texture is assigned, return that
if (customNormalTex)
{
return(customNormalTex);
}
StylizedWaterResources r = StylizedWaterResources.Instance;
//Set compression setting
TexturePacker.useCompression = useCompression;
Texture2D heightmap = r.waveStyles[waveStyle];
Texture2D normalTexture = new Texture2D(NORMAL_RESOLUTION, NORMAL_RESOLUTION, TextureFormat.ARGB32, true)
{
name = "_normal",
filterMode = FilterMode.Trilinear,
wrapMode = TextureWrapMode.Repeat
};
RenderTexture rt = new RenderTexture(normalTexture.width, normalTexture.height, 0);
RenderTexture.active = rt;
//Constants
NormalRenderMat.SetFloat("_Offset", NORMAL_OFFSET);
NormalRenderMat.SetFloat("_Strength", NORMAL_STRENGTH);
//Convert heightmap to normal on GPU
Graphics.Blit(heightmap, rt, NormalRenderMat);
//Copy result into texture
normalTexture.ReadPixels(new Rect(0, 0, normalTexture.width, normalTexture.height), 0, 0);
normalTexture.Apply();
//Cleanup
RenderTexture.active = null;
normalTexture = SaveAndGetTexture(targetMaterial, normalTexture);
return(normalTexture);
}
//TODO (Polish): Use a struct
public static Texture2D RenderShaderMap(Material targetMaterial, int intersectionStyle, int waveStyle, int heightmapStyle, bool useCompression = false, Texture2D customIntersectionTex = null, Texture2D customHeightmapTex = null)
{
StylizedWaterResources r = StylizedWaterResources.Instance;
//Set compression setting
TexturePacker.useCompression = useCompression;
//Intersection
Texture2D intersectionTex;
if (customIntersectionTex)
{
intersectionTex = customIntersectionTex;
}
else
{
intersectionTex = r.intersectionStyles[intersectionStyle];
}
//Foam
Texture2D foamTex;
//When a custom normal map is used, force the usage of the intersection texture for foam
if (waveStyle == r.waveStyles.Length)
{
foamTex = Texture2D.blackTexture;
}
else
{
foamTex = r.waveStyles[waveStyle];
}
//Heightmap
Texture2D heightmapTex;
if (customHeightmapTex)
{
heightmapTex = customHeightmapTex;
}
else
{
heightmapTex = r.heightmapStyles[heightmapStyle];
}
Texture2D shadermap = new Texture2D(SHADERMAP_RESOLUTION, SHADERMAP_RESOLUTION, TextureFormat.RGB24, true)
{
name = "_shadermap", //Prefix and suffix to be appended upon saving
anisoLevel = 2,
filterMode = FilterMode.Bilinear,
wrapMode = TextureWrapMode.Repeat
};
RenderTexture rt = new RenderTexture(shadermap.width, shadermap.width, 0);
RenderTexture.active = rt;
//Constants
ShaderMapRenderMat.SetTexture("_RedInput", foamTex);
ShaderMapRenderMat.SetTexture("_GreenInput", heightmapTex);
ShaderMapRenderMat.SetTexture("_BlueInput", intersectionTex);
//ShaderMapRenderMat.SetTexture("_AlphaInput", null);
//Pack textures on GPU
Graphics.Blit(null, rt, ShaderMapRenderMat);
//Copy result into texture
shadermap.ReadPixels(new Rect(0, 0, shadermap.width, shadermap.height), 0, 0);
shadermap.Apply();
//Cleanup
RenderTexture.active = null;
shadermap = SaveAndGetTexture(targetMaterial, shadermap);
return(shadermap);
}