Project Week 25/Next Generation GPU Volume Rendering - Revision history

Drouin.simon at 09:04, 30 June 2017

2017-06-30T09:04:14Z

Sankhesh: /* Addendum */

2017-06-28T17:16:34Z

Addendum

Sankhesh: /* Hangout at Project Week */

2017-06-28T17:15:54Z

Hangout at Project Week

Sankhesh at 17:07, 28 June 2017

2017-06-28T17:07:04Z

Drouin.simon: /* Hangout at Project Week */

2017-06-28T15:20:47Z

Hangout at Project Week

Pieper: /* Hangout at Project Week */

2017-06-28T14:51:39Z

Hangout at Project Week

Pieper: /* Hangout at Project Week */

2017-06-28T14:47:05Z

Hangout at Project Week

Pieper: /* Planning hangout June 13 */

2017-06-28T14:21:36Z

Planning hangout June 13

Marianna at 13:53, 20 June 2017

2017-06-20T13:53:22Z

Marianna at 12:40, 20 June 2017

2017-06-20T12:40:36Z

@@ Line 41: / Line 41: @@
 Determine a sensible way to integrate all those contribution in VTK.
+|
-<!-- Progress and Next steps (fill out at the end of project week) -->
+* Minutes of the meeting held during project week at the bottom of this page
 |}

@@ Line 152: / Line 152: @@
 ===== Addendum =====
 * [https://blog.kitware.com/vtk-8-0-0/ VTK 8.0.0 release notes]
-* [http://m.vtk.org/ VTK-m]
+* [http://m.vtk.org/ VTK-M]

← Older revision		Revision as of 17:15, 28 June 2017
Line 149:		Line 149:
	* Be able to create volume processing pipelines that connect CPU and GPU processing seemlessly		* Be able to create volume processing pipelines that connect CPU and GPU processing seemlessly
	* Investigate the capabilities of vtk-m		* Investigate the capabilities of vtk-m
		+
		+	===== Addendum =====
		+	* [https://blog.kitware.com/vtk-8-0-0/ VTK 8.0.0 release notes]
		+	* [http://m.vtk.org/ VTK-m]

@@ Line 101: / Line 101: @@
 === Hangout at Project Week ===
-* Attendees: Alvaro, Sankesh, Aashish, Andras, Steve, Jc, Simon, Ole
+* Attendees: Alvaro, Sankhesh, Aashish, Andras, Steve, Jc, Simon, Ole
 * Open Questions:

← Older revision		Revision as of 15:20, 28 June 2017
Line 145:		Line 145:
	** look at sharing volumes across mappers (class to represent a volume in memory)		** look at sharing volumes across mappers (class to represent a volume in memory)
	** shared GL context (see CustusX for worked out example of a "hacked in" way to support this)		** shared GL context (see CustusX for worked out example of a "hacked in" way to support this)
		+
		+	Long-Term
		+	* Be able to create volume processing pipelines that connect CPU and GPU processing seemlessly
		+	* Investigate the capabilities of vtk-m

@@ Line 139: / Line 139: @@
 * At project week:
 ** collect examples of things that should be simple
 * At Kitware:
 ** propose a high level API for feedback

← Older revision		Revision as of 14:47, 28 June 2017
Line 119:		Line 119:
	** uniforms		** uniforms
	** textures		** textures
		+
		+	* RenderPath vs RenderTags example?
		+	** Pattern is used in the vtk volume rendering mapper
		+	** existing implementation serves as a working example for customization
		+	** may need to define new spots to inject code (TBD)
		+
		+	Debugging
		+	** Pattern to add unique identifiers to shader variables
		+	** There are vtk hooks to help debug
		+	** Access to compiler errors, and full shader scene
		+	** Can use an apitrace program (linux and mac) to track opengl state
		+
		+	How to make it easier to customize?
		+	** e.g. coloring samples by depth for 4D US
		+	** high level API?
		+	** set of worked out examples for common use cases
		+
		+	Next steps
		+	* At project week:
		+	** collect examples of things that should be simple
		+	* At Kitware:
		+	** propose a high level API for feedback
		+	** multiple overlapping volumes
		+	** look at sharing volumes across mappers (class to represent a volume in memory)
		+	** shared GL context (see CustusX for worked out example of a "hacked in" way to support this)

← Older revision		Revision as of 14:21, 28 June 2017
Line 98:		Line 98:
	* Mesa backend?		* Mesa backend?
	** Offscreen support for OpenGL2 backend should work in VTK now		** Offscreen support for OpenGL2 backend should work in VTK now
		+
		+	=== Hangout at Project Week ===
		+
		+	* Attendees: Alvaro, Sankesh, Aashish, Andras, Steve, Jc, Simon, Ole
		+
		+	* Open Questions:
		+	** What is best to accomplish at Project Week?
		+	** What architecture is best for the future and how can we get there?
		+
		+	* Alvero announced that volume peeling supports the OpenGL render pass, which could support custom shaders
		+	** two calls: Prereplace and Postreplace (as in vtkPolyDataMapper)
		+	** newer OpenGL2 version is much more flexible than the older version in OpenGL1
		+	** allows user to replace parts of the rending process
		+
		+	* Need to be able to change
		+	** per-sample ray accumulating value
		+	** compositing function
		+	** initialization of ray path parameters
		+	** control over when ray terminates
		+	** uniforms
		+	** textures

@@ Line 2: / Line 2: @@
   Back to [[Project_Week_25#Projects|Projects List]]
 ==Key Investigators==
 * [http://nist.mni.mcgill.ca/?page_id=369 Simon Drouin] (Montreal Neurological Institute, Canada)
 * [http://www.spl.harvard.edu/pages/People/pieper Steve Pieper ] (Isomics Inc., USA)

@@ Line 10: / Line 10: @@
 * [http://perk.cs.queensu.ca/users/lasso Andras Lasso] (Queen's University, Canada)
 * [http://www.sintef.no/en/all-employees/employee/?empId=541 Ole Vegard Solberg] (SINTEF, Norway)
-* [https://www.kitware.com/alvaro-sanchez/ Alvaro Sanchez] (Kitware, USA <i>Remote attendance</i>)
+* [https://www.kitware.com/alvaro-sanchez/ Alvaro Sanchez] (Kitware Inc., USA <i>Remote attendance</i>)
-* [https://www.kitware.com/sankhesh-jhaveri/ Sankhesh Jhaveri] (Kitware, USA <i>Remote attendance</i>)
+* [https://www.kitware.com/sankhesh-jhaveri/ Sankhesh Jhaveri] (Kitware Inc., USA <i>Remote attendance</i>)
 ==Project Description==
@@ Line 38: / Line 38: @@
 * [http://ibisneuronav.org Ibis Neuronav]/PRISM (Multi-volume ray-casting with programmable shaders in VTK)
-* Steve Pieper's volume processing on the GPU with [https://github.com/pieper/CommonGL OpenGL in VTK and GLSL] and with [http://afruehstueck.github.io/TF.html WebGL (With Anna Fruehstueck)] and [https://www.youtube.com/watch?v=wMkuwzA7RDo WebGL2] (see videos below)
+* Steve Pieper's volume processing on the GPU with [https://github.com/pieper/CommonGL OpenGL in VTK and GLSL] and with [http://afruehstueck.github.io/TF.html WebGL (with Anna Fruehstueck)] and [https://www.youtube.com/watch?v=wMkuwzA7RDo WebGL2] (see videos below)
 * [https://www.custusx.org/ CustusX ] (GPU volume slicing and compositing with multi-window context sharing)
@@ Line 44: / Line 44: @@
+|
 <!-- Progress and Next steps (fill out at the end of project week) -->
 |}