public void Draw(Camera camera, bool flip, float epsilon, float normalDelta)
{
if (_disposing)
{
return;
}
if (camera == null)
{
return;
}
if (_data == null)
{
return;
}
if (_props == null)
{
return;
}
if (_cmd == null)
{
return;
}
if (_material == null)
{
return;
}
_data.SetMaterialProperties(_props);
if (debugTex3D != null)
{
_props.SetTexture("_SDFVolumeTex", debugTex3D);
}
_props.SetMatrix(_SDFVolumeLocalToWorld, _volume.LocalToWorldNoScale);
_props.SetMatrix(_SDFVolumeWorldToLocal, _volume.LocalToWorldNoScale.inverse);
_props.SetFloat(_SDFVolumeFlip, flip ? -1f : 1f);
_props.SetVector(_BlitScaleBiasRt, new Vector4(1f, 1f, 0f, 0f));
_props.SetVector(_BlitScaleBias, new Vector4(1f, 1f, 0f, 0f));
_props.SetFloat(_SDFPreviewEpsilon, epsilon);
_props.SetFloat(_SDFPreviewNormalDelta, normalDelta);
AVolumeUtils.SetupRaymarchingMatrix(
camera.fieldOfView,
camera.worldToCameraMatrix,
new Vector2(camera.pixelWidth, camera.pixelHeight));
_cmd.Clear();
_cmd.DrawProcedural(Matrix4x4.identity, _material, 0, MeshTopology.Quads, 4, 1, _props);
Graphics.ExecuteCommandBuffer(_cmd);
}
public void Draw(Camera camera, bool flip, float epsilon, float normalDelta, bool rayDirVertexShader = false)
{
if (_disposing)
{
return;
}
if (camera == null)
{
return;
}
if (_data == null)
{
return;
}
if (_props == null)
{
return;
}
if (_cmd == null)
{
return;
}
if (_material == null)
{
return;
}
_data.SetMaterialProperties(_props);
if (debugTex3D != null)
{
_props.SetTexture("_SDFVolumeTex", debugTex3D);
}
_props.SetMatrix(_SDFVolumeLocalToWorld, LocalToWorldNoScale);
_props.SetMatrix(_SDFVolumeWorldToLocal, LocalToWorldNoScale.inverse);
_props.SetFloat(_SDFVolumeFlip, flip ? -1f : 1f);
_props.SetFloat(_SDFPreviewEpsilon, epsilon);
_props.SetFloat(_SDFPreviewNormalDelta, normalDelta);
// These are connstant - add to different CBUFFER?
_props.SetVector(_BlitScaleBiasRt, new Vector4(1f, 1f, 0f, 0f));
_props.SetVector(_BlitScaleBias, new Vector4(1f, 1f, 0f, 0f));
if (rayDirVertexShader)
{
// Using procedural quad generation with rayDir calcaultion in vertex shader.
AVolumeUtils.ClearRaymarchingMatrix(); // just for debugging
// Not an actual matrix, just using matrix as convient storage type.
_props.SetMatrix(_FrustumWorldCorners, AVolumeUtils.GetCameraFrustumWorldCorners(camera));
}
else
{
AVolumeUtils.SetupRaymarchingMatrix(camera.fieldOfView, camera.worldToCameraMatrix, new Vector2(camera.pixelWidth, camera.pixelHeight));
}
_cmd.Clear();
_cmd.DrawProcedural(Matrix4x4.identity, _material, 0, MeshTopology.Quads, 4, 1, _props);
Graphics.ExecuteCommandBuffer(_cmd);
// Debug.Log( $"rayDirVertexShader: {rayDirVertexShader} _material: {_material.shader.name}");
}