private void OnRenderImage(RenderTexture src, RenderTexture dest)
{
if (!RayMarchMat)
{
Graphics.Blit(src, dest);
return;
}
//Matrix
RayMarchMat.SetMatrix("_CamFrustum", CamFrustum(Cam));
RayMarchMat.SetMatrix("_CamToWorld", Cam.cameraToWorldMatrix);
RenderTexture.active = dest;
RayMarchMat.SetTexture("_MainTex", src);
RayMarchMat.SetTexture("_NoiseTex", noiseTex);
RayMarchMat.SetFloat("_CloudSmooth", cloudSmooth);
if (cloudRigi != null && cloudRigi.Length > 0)
{
RayMarchMat.SetVectorArray("_CloudRigi"
, cloudRigi.Select(ts =>
{
if (ts == null)
{
return(Vector4.zero);
}
var pos = ts.position;
var maxSize = Mathf.Max(ts.lossyScale.x, ts.lossyScale.y, ts.lossyScale.z);
return(new Vector4(pos.x, pos.y, pos.z, maxSize));
}).ToArray());
RayMarchMat.SetInt("_CloudRigiNum", cloudRigi.Length);
}
else
{
RayMarchMat.SetInt("_CloudRigiNum", 0);
}
//压入当前的MVP
GL.PushMatrix();
//视野的锥型区域从(0,0,-1) to (1,1,100)
GL.LoadOrtho();
//激活pass 用于渲染
RayMarchMat.SetPass(0);
//压入一个面片当作模型
GL.Begin(GL.QUADS);
//BL
//unit 是 texture 的编号
GL.MultiTexCoord2(0, 0.0f, 0.0f);
GL.Vertex3(0.0f, 0.0f, 3.0f); //z储存CamFrustum 的 row
//BR
GL.MultiTexCoord2(0, 1.0f, 0.0f);
GL.Vertex3(1.0f, 0.0f, 2.0f);
//TR
GL.MultiTexCoord2(0, 1.0f, 1.0f);
GL.Vertex3(1.0f, 1.0f, 1.0f);
//TL
GL.MultiTexCoord2(0, 0.0f, 1.0f);
GL.Vertex3(0.0f, 1.0f, 0.0f);
GL.End();
//弹出改变MVP
GL.PopMatrix();
}
private void OnRenderImage(RenderTexture src, RenderTexture dest)
{
if (!RayMarchMat)
{
Graphics.Blit(src, dest);
return;
}
//Matrix
RayMarchMat.SetMatrix("_CamFrustum", CamFrustum(Cam));
RayMarchMat.SetMatrix("_CamToWorld", Cam.cameraToWorldMatrix);
//Light
if (directionalLight == null || directionalLight.type != LightType.Directional)
{
RayMarchMat.SetVector("_LightCol", Color.black);
RayMarchMat.SetVector("_LightDir", Vector3.forward);
RayMarchMat.SetFloat("_LightIntensity", 0);
}
else //(directionalLight.type == LightType.Directional)
{
RayMarchMat.SetColor("_LightCol", directionalLight.color);
RayMarchMat.SetVector("_LightDir", directionalLight.transform.forward);
RayMarchMat.SetFloat("_LightIntensity", directionalLight.intensity);
}
//Reflection
if (reflectionProbe)
{
if (reflectionProbe.mode == ReflectionProbeMode.Baked)
{
RayMarchMat.SetTexture("_ReflectionCube"
, reflectionProbe.bakedTexture);
}
else if (reflectionProbe.mode == ReflectionProbeMode.Custom)
{
RayMarchMat.SetTexture("_ReflectionCube"
, reflectionProbe.customBakedTexture);
}
else if (reflectionProbe.mode == ReflectionProbeMode.Realtime)
{
RayMarchMat.SetTexture("_ReflectionCube"
, reflectionProbe.realtimeTexture);
}
}
else
{
RayMarchMat.SetTexture("_ReflectionCube"
, Texture2D.blackTexture);
}
RayMarchMat.SetVector("_ReflectionData"
, new Vector3(
_ReflectionCount, _ReflectionIntensity, _EnvRefIntensity
));
//Shadow
RayMarchMat.SetVector("_ShadowData"
, new Vector4(
shadowDistance, shadowIntensity, softShadowPenumbra, softShadow ? 1f : 0f
));
//AO
RayMarchMat.SetVector("_AOData"
, new Vector3(
aoStepSize, aoIterations, aoIntensity
));
//Render Object
RayMarchMat.SetFloat("_MaxDistance", maxDistance);
RayMarchMat.SetFloat("_Accuracy", accuracy);
RayMarchMat.SetFloat("_MaxIterations", maxIterations);
//Sphere
if (spheres != null && spheres.Length > 0)
{
RayMarchMat.SetVectorArray("_Spheres", spheres);
RayMarchMat.SetInt("_SpheresNum", spheres.Length);
}
else
{
RayMarchMat.SetInt("_SpheresNum", 0);
}
if (spheresRigi != null && spheresRigi.Length > 0)
{
RayMarchMat.SetVectorArray("_SpheresRigi"
, spheresRigi.Select(rigi =>
{
if (rigi == null)
{
return(Vector4.zero);
}
var pos = rigi.transform.position;
var col = rigi.GetComponent <SphereCollider>();
return(new Vector4(pos.x, pos.y, pos.z, col == null ? 0f : col.radius));
}).ToArray());
}
RayMarchMat.SetInt("_SpheresRigiNum", spheresRigi.Length);
RayMarchMat.SetColor("_SpheresColor", spheresColor);
RayMarchMat.SetFloat("_SphereSmooth", sphereSmooth);
//Plane
if (plane != null)
{
var position = plane.position;
RayMarchMat.SetVector("_PlanePos"
, new Vector4(position.x, position.y, position.z, 1.0f));
RayMarchMat.SetVector("_PlaneUp", plane.up);
RayMarchMat.SetVector("_PlaneColor", planeColor);
}
else
{
RayMarchMat.SetVector("_PlanePos", Vector4.zero);
}
RenderTexture.active = dest;
RayMarchMat.SetTexture("_MainTex", src);
//压入当前的MVP
GL.PushMatrix();
//视野的锥型区域从(0,0,-1) to (1,1,100)
GL.LoadOrtho();
//激活pass 用于渲染
RayMarchMat.SetPass(0);
//压入一个面片当作模型
GL.Begin(GL.QUADS);
//BL
//unit 是 texture 的编号
GL.MultiTexCoord2(0, 0.0f, 0.0f);
GL.Vertex3(0.0f, 0.0f, 3.0f); //z储存CamFrustum 的 row
//BR
GL.MultiTexCoord2(0, 1.0f, 0.0f);
GL.Vertex3(1.0f, 0.0f, 2.0f);
//TR
GL.MultiTexCoord2(0, 1.0f, 1.0f);
GL.Vertex3(1.0f, 1.0f, 1.0f);
//TL
GL.MultiTexCoord2(0, 0.0f, 1.0f);
GL.Vertex3(0.0f, 1.0f, 0.0f);
GL.End();
//弹出改变MVP
GL.PopMatrix();
}