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public GenerateShader ( string shaderName, Action |
||
| shaderName | string | The shader's name in the file. |
| addToProperties | Action |
Adds any Unity Shaderlab Properties to the given string. |
| addToDefs | Action |
Adds any Cg declarations to the given string. |
| returnFragmentColor | StringBuilder>.Action | /// Outupts shader instructions that return a float4 color /// given the variable holding the graph's noise output. /// |
| return | string | |
/// <summary>
/// Saves the shader for the given graph to the given file with the given name.
/// Also forces Unity to immediately recognize and compile the shader
/// so that it can be immediately used after calling this function.
/// If the shader fails to load for some reason, an error is output to the Unity console
/// and "null" is returned.
/// </summary>
/// <param name="gradientRampName">The name of the gradient ramp texture param.</param>
public static Shader SaveShader(Graph g, string filePath, string shaderName,
string gradientRampName)
{
string relativePath = StringUtils.GetRelativePath(filePath, "Assets");
try
{
//Get the shader code.
string shad = g.GenerateShader(shaderName, gradientRampName);
if (shad == null)
{
return(null);
}
//Write to the file.
DirectoryInfo dir = new DirectoryInfo(Path.GetDirectoryName(filePath));
if (!dir.Exists)
{
dir.Create();
}
File.WriteAllText(filePath, shad);
//Tell Unity to load/compile it.
AssetDatabase.ImportAsset(relativePath, ImportAssetOptions.ForceSynchronousImport);
}
catch (Exception e)
{
Debug.LogError("Error saving/loading shader to/from file: " + e.Message);
}
return(AssetDatabase.LoadAssetAtPath <Shader>(relativePath));
}
/// <summary>
/// Generates a texture containing the given graph's noise output.
/// If this is being called very often, create a permanent render target and material and
/// use the other version of this method instead for much better performance.
/// If an error occurred, outputs to the Unity debug console and returns "null".
/// </summary>
/// <param name="outputComponents">
/// The texture output.
/// For example, pass "rgb" or "xyz" to output the noise into the red, green, and blue channels
/// but not the alpha channel.
/// </param>
/// <param name="defaultColor">
/// The color (generally 0-1) of the color components which aren't set by the noise.
/// </param>
/// <param name="uvZ">The Z coordinate of the UVs, in case the graph uses it for 3D noise.</param>
/// <param name="leaveReadable">
/// Whether the texture's pixel data can still be read from the CPU after this operation.
/// </param>
public static Texture2D GenerateToTexture(Graph g, GraphParamCollection c,
int width, int height, float uvZ,
string outputComponents, float defaultColor,
TextureFormat format = TextureFormat.RGBAFloat,
bool leaveReadable = false)
{
//Generate a shader/material from the graph.
Shader shader = ShaderUtil.CreateShaderAsset(g.GenerateShader("TempGPUNoiseShader",
outputComponents,
defaultColor));
if (shader == null)
{
return(null);
}
Material mat = new Material(shader);
c.SetParams(mat);
mat.SetFloat(GraphUtils.Param_UVz, uvZ);
//Render the shader's output into a render texture and copy the data to a Texture2D.
RenderTexture target = RenderTexture.GetTemporary(width, height, 16,
RenderTextureFormat.ARGBFloat);
Texture2D resultTex = new Texture2D(width, height, format, false, true);
//Generate.
GraphUtils.GenerateToTexture(target, mat, resultTex, leaveReadable);
//Clean up.
RenderTexture.ReleaseTemporary(target);
return(resultTex);
}
/// <summary>
/// Generates a 3D texture containing the given graph's noise output.
/// </summary>
/// <param name="outputComponents">
/// The texture output.
/// For example, pass "rgb" or "xyz" to output the noise into the red, green, and blue channels
/// but not the alpha channel.
/// </param>
/// <param name="defaultColor">
/// The color (generally 0-1) of the color components which aren't set by the noise.
/// </param>
/// <param name="useMipmaps">Whether the 3D texture object uses mipmapping.</param>
/// <param name="leaveTextureReadable">
/// Whether to let the texture keep a CPU copy of its data on hand for later reading.
/// </param>
public static Texture3D GenerateToTexture(Graph g, GraphParamCollection c,
int width, int height, int depth,
string outputComponents, float defaultColor,
bool useMipmaps, bool leaveTextureReadable,
TextureFormat format = TextureFormat.RGBA32)
{
//Generate a shader/material from the graph.
Shader shader = ShaderUtil.CreateShaderAsset(g.GenerateShader("TempGPUNoiseShader",
outputComponents,
defaultColor));
if (shader == null)
{
return(null);
}
Material mat = new Material(shader);
c.SetParams(mat);
//For every Z layer in the texture, generate a 2D texture representing that layer.
Color32[] finalPixels = new Color32[width * height * depth];
RenderTexture target = RenderTexture.GetTemporary(width, height, 16,
RenderTextureFormat.ARGBFloat);
Texture2D resultTex = new Texture2D(width, height, TextureFormat.RGBAFloat, false, true);
for (int depthI = 0; depthI < depth; ++depthI)
{
//Get the UV.z coordinate.
float uvZ = (float)depthI / depth;
mat.SetFloat(GraphUtils.Param_UVz, uvZ);
GraphUtils.GenerateToTexture(target, mat, resultTex, true);
//Copy the resulting data into part of the 3D texture.
Color32[] layerPixels = resultTex.GetPixels32();
int pixelOffset = depthI * (width * height);
for (int pixelI = 0; pixelI < (width * height); ++pixelI)
{
finalPixels[pixelI + pixelOffset] = layerPixels[pixelI];
}
}
//Create the actual texture object.
Texture3D finalTex = new Texture3D(width, height, depth, format, useMipmaps);
finalTex.SetPixels32(finalPixels);
finalTex.Apply(useMipmaps, !leaveTextureReadable);
//Clean up.
RenderTexture.ReleaseTemporary(target);
return(finalTex);
}
/// <summary>
/// Generates a texture containing the given graph's noise output.
/// If this is being called very often, create a permanent render target and material and
/// use the other version of this method instead for much better performance.
/// If an error occurred, outputs to the Unity debug console and returns "null".
/// </summary>
/// <param name="gradientRampName">The name of the gradient ramp texture param.</param>
/// <param name="uvZ">The Z coordinate of the UVs, in case the graph uses it for 3D noise.</param>
/// <param name="leaveReadable">
/// Whether to leave the texture data readable on the CPU after the operation.
/// </param>
public static Texture2D GenerateToTexture(Graph g, GraphParamCollection c,
int width, int height, float uvZ,
Gradient gradientRamp,
TextureFormat format = TextureFormat.RGBAFloat,
bool leaveReadable = false)
{
//Generate a shader/material from the graph.
Shader shader = ShaderUtil.CreateShaderAsset(g.GenerateShader("TempGPUNoiseShader",
"_MyGradientRamp14123"));
if (shader == null)
{
return(null);
}
Material mat = new Material(shader);
c.SetParams(mat);
mat.SetFloat(GraphUtils.Param_UVz, uvZ);
//Generate a texture from the gradient.
Texture2D myRamp = new Texture2D(1024, 1, TextureFormat.RGBA32, false);
Color[] cols = new Color[myRamp.width];
for (int i = 0; i < cols.Length; ++i)
{
cols[i] = gradientRamp.Evaluate((float)i / (float)(cols.Length - 1));
}
myRamp.SetPixels(cols);
myRamp.Apply(false, true);
mat.SetTexture("_MyGradientRamp14123", myRamp);
//Render the shader's output into a render texture and copy the data to a Texture2D.
RenderTexture target = RenderTexture.GetTemporary(width, height, 16,
RenderTextureFormat.ARGBFloat);
Texture2D resultTex = new Texture2D(width, height, format, false, true);
//Generate.
GraphUtils.GenerateToTexture(target, mat, resultTex, leaveReadable);
//Clean up.
RenderTexture.ReleaseTemporary(target);
return(resultTex);
}
/// <summary>
/// Saves the shader for the given graph to the given file with the given name.
/// Also forces Unity to immediately recognize and compile the shader
/// so that it can be immediately used after calling this function.
/// If the shader fails to load for some reason, an error is output to the Unity console
/// and "null" is returned.
/// </summary>
/// <param name="gradientRampName">The name of the gradient ramp texture param.</param>
public static Shader SaveShader(Graph g, string filePath, string shaderName,
string gradientRampName)
{
string relativePath = StringUtils.GetRelativePath(filePath, "Assets");
try
{
//Get the shader code.
string shad = g.GenerateShader(shaderName, gradientRampName);
if (shad == null)
{
return null;
}
//Write to the file.
DirectoryInfo dir = new DirectoryInfo(Path.GetDirectoryName(filePath));
if (!dir.Exists)
dir.Create();
File.WriteAllText(filePath, shad);
//Tell Unity to load/compile it.
AssetDatabase.ImportAsset(relativePath, ImportAssetOptions.ForceSynchronousImport);
}
catch (Exception e)
{
Debug.LogError("Error saving/loading shader to/from file: " + e.Message);
}
return AssetDatabase.LoadAssetAtPath<Shader>(relativePath);
}
