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Remove the sky mesh

/main
Evgenii Golubev 7 年前
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cd11ceeb
共有 1 个文件被更改，包括 32 次插入 和 98 次删除
  1. 130
      Assets/ScriptableRenderPipeline/HDRenderPipeline/Sky/SkyManager.cs

130
Assets/ScriptableRenderPipeline/HDRenderPipeline/Sky/SkyManager.cs
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public Matrix4x4 invViewProjMatrix;
public Vector3 cameraPosWS;
public Vector4 screenSize;
public Mesh skyMesh;
public CommandBuffer commandBuffer;
public Light sunLight;
public RenderTargetIdentifier colorBuffer;

IBLFilterGGX m_iblFilterGgx = null;
Vector4 m_CubemapScreenSize;
Matrix4x4[] m_faceWorldToViewMatrixMatrices = new Matrix4x4[6];
Matrix4x4[] m_facePixelCoordToViewDirMatrices = new Matrix4x4[6];
Matrix4x4[] m_faceWorldToViewMatrixMatrices = new Matrix4x4[6];
Matrix4x4[] m_facePixelCoordToViewDirMatrices = new Matrix4x4[6];
Mesh[] m_CubemapFaceMesh = new Mesh[6];
BuiltinSkyParameters m_BuiltinParameters = new BuiltinSkyParameters();
SkyRenderer m_Renderer = null;

public Texture skyReflection { get { return m_SkyboxGGXCubemapRT; } }
protected Mesh BuildSkyMesh(Vector3 cameraPosition, Matrix4x4 cameraInvViewProjectionMatrix)
{
// These are clip space coords.
Vector4 vertData0 = new Vector4(-1.0f, -1.0f, 0.0f, 1.0f);
Vector4 vertData1 = new Vector4( 1.0f, -1.0f, 0.0f, 1.0f);
Vector4 vertData2 = new Vector4( 1.0f, 1.0f, 0.0f, 1.0f);
Vector4 vertData3 = new Vector4(-1.0f, 1.0f, 0.0f, 1.0f);
Vector3[] vertData = new Vector3[4];
vertData[0] = new Vector3(vertData0.x, vertData0.y, vertData0.z);
vertData[1] = new Vector3(vertData1.x, vertData1.y, vertData1.z);
vertData[2] = new Vector3(vertData2.x, vertData2.y, vertData2.z);
vertData[3] = new Vector3(vertData3.x, vertData3.y, vertData3.z);
// Get view vector based on the frustum, i.e (invert transform frustum get position etc...)
Vector3[] eyeVectorData = new Vector3[4];
Matrix4x4 transformMatrix = cameraInvViewProjectionMatrix;
Vector4 posWorldSpace0 = transformMatrix * vertData0;
Vector4 posWorldSpace1 = transformMatrix * vertData1;
Vector4 posWorldSpace2 = transformMatrix * vertData2;
Vector4 posWorldSpace3 = transformMatrix * vertData3;
Vector4 cameraPos = new Vector4(cameraPosition.x, cameraPosition.y, cameraPosition.z, 0.0f);
Vector4 direction0 = (posWorldSpace0 / posWorldSpace0.w - cameraPos);
Vector4 direction1 = (posWorldSpace1 / posWorldSpace1.w - cameraPos);
Vector4 direction2 = (posWorldSpace2 / posWorldSpace2.w - cameraPos);
Vector4 direction3 = (posWorldSpace3 / posWorldSpace3.w - cameraPos);
if (SystemInfo.graphicsUVStartsAtTop)
{
eyeVectorData[3] = new Vector3(direction0.x, direction0.y, direction0.z).normalized;
eyeVectorData[2] = new Vector3(direction1.x, direction1.y, direction1.z).normalized;
eyeVectorData[1] = new Vector3(direction2.x, direction2.y, direction2.z).normalized;
eyeVectorData[0] = new Vector3(direction3.x, direction3.y, direction3.z).normalized;
}
else
{
eyeVectorData[0] = new Vector3(direction0.x, direction0.y, direction0.z).normalized;
eyeVectorData[1] = new Vector3(direction1.x, direction1.y, direction1.z).normalized;
eyeVectorData[2] = new Vector3(direction2.x, direction2.y, direction2.z).normalized;
eyeVectorData[3] = new Vector3(direction3.x, direction3.y, direction3.z).normalized;
}
// Write out the mesh
var triangles = new int[6] { 0, 1, 2, 2, 3, 0 };
return new Mesh
{
vertices = vertData,
normals = eyeVectorData,
triangles = triangles
};
}
void RebuildTextures(SkySettings skySettings)
{
int resolution = 256;

m_CubemapScreenSize = new Vector4((float)resolution, (float)resolution, 1.0f / (float)resolution, 1.0f / (float)resolution);
}
void RebuildSkyMeshes(float nearPlane, float farPlane)
void RebuildSkyMatrices(float nearPlane, float farPlane)
if (m_CubemapFaceMesh[0] == null)
{
Matrix4x4 cubeProj = Matrix4x4.Perspective(90.0f, 1.0f, nearPlane, farPlane);
// Ref: https://msdn.microsoft.com/en-us/library/windows/desktop/bb204881(v=vs.85).aspx
Vector3[] lookAtList =
{
new Vector3(1.0f, 0.0f, 0.0f),
new Vector3(-1.0f, 0.0f, 0.0f),
new Vector3(0.0f, 1.0f, 0.0f),
new Vector3(0.0f, -1.0f, 0.0f),
new Vector3(0.0f, 0.0f, 1.0f),
new Vector3(0.0f, 0.0f, -1.0f),
};
Matrix4x4 cubeProj = Matrix4x4.Perspective(90.0f, 1.0f, nearPlane, farPlane);
Vector3[] upVectorList =
{
new Vector3(0.0f, 1.0f, 0.0f),
new Vector3(0.0f, 1.0f, 0.0f),
new Vector3(0.0f, 0.0f, -1.0f),
new Vector3(0.0f, 0.0f, 1.0f),
new Vector3(0.0f, 1.0f, 0.0f),
new Vector3(0.0f, 1.0f, 0.0f),
};
// Ref: https://msdn.microsoft.com/en-us/library/windows/desktop/bb204881(v=vs.85).aspx
Vector3[] lookAtList =
{
new Vector3(1.0f, 0.0f, 0.0f),
new Vector3(-1.0f, 0.0f, 0.0f),
new Vector3(0.0f, 1.0f, 0.0f),
new Vector3(0.0f, -1.0f, 0.0f),
new Vector3(0.0f, 0.0f, 1.0f),
new Vector3(0.0f, 0.0f, -1.0f),
};
for (int i = 0; i < 6; ++i)
{
Matrix4x4 lookAt = Matrix4x4.LookAt(Vector3.zero, lookAtList[i], upVectorList[i]);
Matrix4x4 worldToView = lookAt * Matrix4x4.Scale(new Vector3(1.0f, 1.0f, -1.0f)); // Need to scale -1.0 on Z to match what is being done in the camera.wolrdToCameraMatrix API. ...
Vector4 screenSize = new Vector4((int)m_SkySettings.resolution, (int)m_SkySettings.resolution, 1.0f / (int)m_SkySettings.resolution, 1.0f / (int)m_SkySettings.resolution);
Vector3[] upVectorList =
{
new Vector3(0.0f, 1.0f, 0.0f),
new Vector3(0.0f, 1.0f, 0.0f),
new Vector3(0.0f, 0.0f, -1.0f),
new Vector3(0.0f, 0.0f, 1.0f),
new Vector3(0.0f, 1.0f, 0.0f),
new Vector3(0.0f, 1.0f, 0.0f),
};
m_faceWorldToViewMatrixMatrices[i] = worldToView;
m_facePixelCoordToViewDirMatrices[i] = ComputePixelCoordToWorldSpaceViewDirectionMatrix(0.5f * Mathf.PI, screenSize, worldToView, true);
m_faceCameraInvViewProjectionMatrix[i] = Utilities.GetViewProjectionMatrix(lookAt, cubeProj).inverse;
for (int i = 0; i < 6; ++i)
{
Matrix4x4 lookAt = Matrix4x4.LookAt(Vector3.zero, lookAtList[i], upVectorList[i]);
Matrix4x4 worldToView = lookAt * Matrix4x4.Scale(new Vector3(1.0f, 1.0f, -1.0f)); // Need to scale -1.0 on Z to match what is being done in the camera.wolrdToCameraMatrix API. ...
Vector4 screenSize = new Vector4((int)m_SkySettings.resolution, (int)m_SkySettings.resolution, 1.0f / (int)m_SkySettings.resolution, 1.0f / (int)m_SkySettings.resolution);
m_CubemapFaceMesh[i] = BuildSkyMesh(Vector3.zero, m_faceCameraInvViewProjectionMatrix[i]);
}
m_faceWorldToViewMatrixMatrices[i] = worldToView;
m_facePixelCoordToViewDirMatrices[i] = ComputePixelCoordToWorldSpaceViewDirectionMatrix(0.5f * Mathf.PI, screenSize, worldToView, true);
m_faceCameraInvViewProjectionMatrix[i] = Utilities.GetViewProjectionMatrix(lookAt, cubeProj).inverse;
}
}

{
// When loading RenderDoc, RenderTextures will go null
RebuildTextures(skySettings);
RebuildSkyMeshes(nearPlane, farPlane);
RebuildSkyMatrices(nearPlane, farPlane);
}
public void Build(RenderPipelineResources renderPipelinesResources)

{
builtinParams.pixelCoordToViewDirMatrix = m_facePixelCoordToViewDirMatrices[i];
builtinParams.invViewProjMatrix = m_faceCameraInvViewProjectionMatrix[i];
builtinParams.skyMesh = m_CubemapFaceMesh[i];
builtinParams.colorBuffer = target;
builtinParams.depthBuffer = BuiltinSkyParameters.nullRT;

m_BuiltinParameters.pixelCoordToViewDirMatrix = ComputePixelCoordToWorldSpaceViewDirectionMatrix(camera.camera.fieldOfView * Mathf.Deg2Rad, camera.screenSize, camera.viewMatrix, false);
m_BuiltinParameters.invViewProjMatrix = camera.viewProjMatrix.inverse;
m_BuiltinParameters.cameraPosWS = camera.camera.transform.position;
m_BuiltinParameters.skyMesh = BuildSkyMesh(camera.camera.GetComponent<Transform>().position, m_BuiltinParameters.invViewProjMatrix);
m_BuiltinParameters.colorBuffer = colorBuffer;
m_BuiltinParameters.depthBuffer = depthBuffer;

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