136 lines
4.4 KiB
C#
136 lines
4.4 KiB
C#
using UnityEngine;
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namespace UnityStandardAssets.ImageEffects
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{
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[ExecuteInEditMode]
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[RequireComponent(typeof(Camera))]
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[AddComponentMenu("Image Effects/Rendering/Sun Shafts")]
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public class SunShafts : PostEffectsBase
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{
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public enum SunShaftsResolution
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{
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Low = 0,
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Normal = 1,
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High = 2
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}
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public enum ShaftsScreenBlendMode
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{
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Screen = 0,
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Add = 1
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}
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public SunShaftsResolution resolution = SunShaftsResolution.Normal;
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public ShaftsScreenBlendMode screenBlendMode;
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public Transform sunTransform;
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public int radialBlurIterations = 2;
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public Color sunColor = Color.white;
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public Color sunThreshold = new Color(0.87f, 0.74f, 0.65f);
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public float sunShaftBlurRadius = 2.5f;
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public float sunShaftIntensity = 1.15f;
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public float maxRadius = 0.75f;
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public bool useDepthTexture = true;
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public Shader sunShaftsShader;
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private Material sunShaftsMaterial;
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public Shader simpleClearShader;
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private Material simpleClearMaterial;
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public override bool CheckResources()
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{
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CheckSupport(useDepthTexture);
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sunShaftsMaterial = CheckShaderAndCreateMaterial(sunShaftsShader, sunShaftsMaterial);
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simpleClearMaterial = CheckShaderAndCreateMaterial(simpleClearShader, simpleClearMaterial);
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if (!isSupported)
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{
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ReportAutoDisable();
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}
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return isSupported;
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}
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private void OnRenderImage(RenderTexture source, RenderTexture destination)
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{
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if (!CheckResources())
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{
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Graphics.Blit(source, destination);
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return;
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}
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if (useDepthTexture)
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{
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GetComponent<Camera>().depthTextureMode |= DepthTextureMode.Depth;
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}
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int num = 4;
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if (resolution == SunShaftsResolution.Normal)
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{
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num = 2;
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}
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else if (resolution == SunShaftsResolution.High)
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{
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num = 1;
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}
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Vector3 vector = Vector3.one * 0.5f;
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vector = ((!sunTransform) ? new Vector3(0.5f, 0.5f, 0f) : GetComponent<Camera>().WorldToViewportPoint(sunTransform.position));
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int width = source.width / num;
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int height = source.height / num;
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RenderTexture temporary = RenderTexture.GetTemporary(width, height, 0);
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sunShaftsMaterial.SetVector("_BlurRadius4", new Vector4(1f, 1f, 0f, 0f) * sunShaftBlurRadius);
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sunShaftsMaterial.SetVector("_SunPosition", new Vector4(vector.x, vector.y, vector.z, maxRadius));
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sunShaftsMaterial.SetVector("_SunThreshold", sunThreshold);
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if (!useDepthTexture)
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{
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RenderTextureFormat format = ((!GetComponent<Camera>().hdr) ? RenderTextureFormat.Default : RenderTextureFormat.DefaultHDR);
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RenderTexture renderTexture = (RenderTexture.active = RenderTexture.GetTemporary(source.width, source.height, 0, format));
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GL.ClearWithSkybox(false, GetComponent<Camera>());
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sunShaftsMaterial.SetTexture("_Skybox", renderTexture);
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Graphics.Blit(source, temporary, sunShaftsMaterial, 3);
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RenderTexture.ReleaseTemporary(renderTexture);
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}
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else
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{
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Graphics.Blit(source, temporary, sunShaftsMaterial, 2);
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}
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DrawBorder(temporary, simpleClearMaterial);
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radialBlurIterations = Mathf.Clamp(radialBlurIterations, 1, 4);
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float num2 = sunShaftBlurRadius * 0.0013020834f;
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sunShaftsMaterial.SetVector("_BlurRadius4", new Vector4(num2, num2, 0f, 0f));
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sunShaftsMaterial.SetVector("_SunPosition", new Vector4(vector.x, vector.y, vector.z, maxRadius));
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for (int i = 0; i < radialBlurIterations; i++)
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{
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RenderTexture temporary3 = RenderTexture.GetTemporary(width, height, 0);
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Graphics.Blit(temporary, temporary3, sunShaftsMaterial, 1);
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RenderTexture.ReleaseTemporary(temporary);
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num2 = sunShaftBlurRadius * (((float)i * 2f + 1f) * 6f) / 768f;
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sunShaftsMaterial.SetVector("_BlurRadius4", new Vector4(num2, num2, 0f, 0f));
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temporary = RenderTexture.GetTemporary(width, height, 0);
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Graphics.Blit(temporary3, temporary, sunShaftsMaterial, 1);
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RenderTexture.ReleaseTemporary(temporary3);
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num2 = sunShaftBlurRadius * (((float)i * 2f + 2f) * 6f) / 768f;
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sunShaftsMaterial.SetVector("_BlurRadius4", new Vector4(num2, num2, 0f, 0f));
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}
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if (vector.z >= 0f)
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{
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sunShaftsMaterial.SetVector("_SunColor", new Vector4(sunColor.r, sunColor.g, sunColor.b, sunColor.a) * sunShaftIntensity);
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}
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else
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{
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sunShaftsMaterial.SetVector("_SunColor", Vector4.zero);
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}
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sunShaftsMaterial.SetTexture("_ColorBuffer", temporary);
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Graphics.Blit(source, destination, sunShaftsMaterial, (screenBlendMode != ShaftsScreenBlendMode.Screen) ? 4 : 0);
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RenderTexture.ReleaseTemporary(temporary);
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}
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}
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}
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