Blender is Happiness in R&D Projects

Blender PTConference 2013

Porto (Portugal)

Carlos Glez. MorcilloAssociate Professor Escuela Superior de InformáticaUniversity of Castilla-La Mancha Blender Foundation Certified Trainer

April 7th 2013

or... “Using Blender as an Integrated Rendering Engine in R&D projects”

[Slide 2]

□ What is Rendering?

□ Why Blender?□ Blender as a «Black Box»□ R&D Projects

□ MultiAgent Rendering □ Sign Language□ Indoor Navigation

□ Showcase

Carlos González Morcillo ([email protected]) – University of Castilla-La Mancha

ContentsIntro Why Blender? Black Box R&D Projects Showcase

[Slide 3]




□ Showcase



[Slide 4]




□ Showcase



[Slide 5]




□ Showcase



[Slide 6]




□ Showcase



[Slide 7]Carlos González Morcillo ([email protected]) – University of Castilla-La Mancha

Intro Why Blender? Black Box R&D Projects Showcase

Botticelli (XV)Botticelli (XV)Search for Realism...Search for Realism...


Search for Realism...Search for Realism...Intro Why Blender? Black Box R&D Projects Showcase

Botticelli (XV)Botticelli (XV)



Botticelli (XV)Botticelli (XV)



Albrecht Dürer (XVI)Albrecht Dürer (XVI)

Input Bin


What is Rendering? What? Compute color for each pixel. How? Different Methods.


Real Time Rendering(GPU Based)

“Realistic” Ray-Traced Rendering(Normally CPU Based)

RealisticRealisticRendering!!Rendering!!



LightLightSimulation!!Simulation!!

Mod

elin

g

Ani

mat

ion

Gam

e En

gine

Vid

eo E

dito

rNodes

Scripting

Ren

derin

g

Blende

r

Yaf(a

)ray

Cycles

etc..

.

Simulation

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Why Blender?


Blender: Swiss Army Knife of 3D graphics


Why Blender?Intro Why Blender? Black Box R&D Projects Showcase

Blender is Free Software

F0: Run the programF1: Study how it works, and change it F2: Redistribute copies. F3: Distribute copies of your modified versions.

Integration in R&D Projects!

4 Essential Freedoms:













Geometry

Materials &Textures

Light Sources

Particles

Others....

Input BinInput Bin

Blender as a «Black Box»Intro Why Blender? Black Box R&D Projects Showcase


Geometry

Materials &Textures

Light Sources

Particles

Others....

Input BinInput Bin



Blender as a «Black Box»

Input BinInput Bin




Input Bin


AftersomeTime

Working

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Input Bin


Resulting2D Image

AftersomeTime

Input Bin




Blender in NumbersIntro Why Blender? Black Box R&D Projects Showcase

● 84% C/C++, 13% Python, 3% Others● 345 Years of effort!! (> 15.000.000 €)● Large development team (>90)


Quality of the Blender CodeIntro Why Blender? Black Box R&D Projects Showcase

"The only reliable measurement of Code Quality: WTFs/minute!"


Some Blender SnippetsIntro Why Blender? Black Box R&D Projects Showcase

Blender 2.26 (first public release)intern/decimation/test/decimate_glut_test/intern/main.cppLines 192-198

faces>push_back(load_face.verts[0]);faces>push_back(load_face.verts[1]);faces>push_back(load_face.verts[2]);

// free up the memory this pile of shit used // to allocate the polygon's vertices

free (load_face.verts);



Blender 2.26 (first public release)source/blender/render/intern/source/rendercore.cLines 230-240

void scanlinesky(char *rect, int y){ /* have to type this! set to : addalphaUnder: char*, char* addalphaUnderGamma: ditto called with char *, uint* !!! unmangle this shit... */ void (*alphafunc)(); float fac; int dx, x, ofs; unsigned int col=0, *rt; short *sp; char *cp, *cp1; float u, v;



Blender 2.50 (new trunk)extern/bullet2/src/Bullet/ConstraintSolver/btConeConstraint.cppLines 799-803

if (fabs(vSwingAxis.x()) > SIMD_EPSILON){ // nonzero twist?! this should never happen. int wtf = 0; wtf = wtf;}

source/blender/blenkernel/intern/library.cLines 801-802

/* this format specifier is fucked... */sprintf(id>name+2, "%s.%0.3d", left, nr);



Blender 2.66 (latest release)extern/bullet2/src/LinearMath/btConvexHull.cppLines 575-590

btAssert(v != 1);btAssert(!isextreme[v]); // wtf we've already done this vertexisextreme[v]=1;j=m_tris.size();while(j) {

if(!m_tris[j]) continue; int3 t=*m_tris[j]; if(above(verts,t,verts[v],btScalar(0.01)*eps)) {

extrude(m_tris[j],v);}

}// now check for those degenerate cases where we // have a flipped triangle or a really skinny


Use Blender in your R&D ProjectsIntro Why Blender? Black Box R&D Projects Showcase

1) External Realistic Rendering Engine. 2) Creation of Graphical Assets.3) Blender Customization: Development

of Particularized Tools (Python Scripting). 4) Testing Suite (find Bugs!).

4 Good Uses:


Research & Development ProjectsIntro Why Blender? Black Box R&D Projects Showcase


MultiAgent Rendering OptimizationIntro Why Blender? Black Box R&D Projects Showcase

Input BinInput BinInput Bin



Geometry

Materials &Textures

Light Sources

Particles

Others....

Input Bin



Geometry

Materials &Textures

Light Sources

Particles

Others....

Input Bin



Input Bin



Ray Depth Light Samples# Photons Use Cache

….Config.Parameters

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AftersomeTime

Working

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Result2D Image

AftersomeTime

Input Bin



Result2D Image

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HowMuch

Time?

© Lightstorm Entertainment



RenderRenderTimeTime 4040 hh




216216 KK Frames FramesStereoscopic (Stereoscopic ( ×2)×2)

1.972 Years1.972 Years






a) 34.816 Coresa) 34.816 Cores






a) 34.816 Coresa) 34.816 Coresb) Optimizationb) Optimization




Speed Rendering UpIntro Why Blender? Black Box R&D Projects Showcase

ConfigurationParameters

Customization of


Speed Rendering UpIntro Why Blender? Black Box R&D Projects Showcase

ConfigurationParameters

Customization of

Input BinInput Bin

Input BinInput Bin

Distributed Rendering


ObjectivesIntro Why Blender? Black Box R&D Projects Showcase

Input Bin

Config. Param.

Combine the advantages of both approaches

Input BinInput Bin

Input Bin+

Customization ofDistributed Rendering



Input Bin

Config. Param.


Input BinInput Bin

Input Bin+


Modeling ofExpertExpertKnowledgeKnowledge



Input Bin

Config. Param.


Input BinInput Bin

Input Bin+


Modeling ofExpertExpertKnowledgeKnowledge

Inherent

ParallelParallelComputingComputing


Proposed SolutionIntro Why Blender? Black Box R&D Projects Showcase

Local Rendering(1 agent)




MultiAgentRendering

ProblemDivision 1




MultiAgentRendering

ProblemDivision 1




MultiAgentRendering

Use Knowledge (Local Optimization)

2

ProblemDivision 1




MultiAgentRendering


2

CombineResults

3

ProblemDivision 1



MultiAgentRendering


2

CombineResults

3

MultiAgentArchitecture

Use of Expert Knowledge

VolunteerComputing

Web Based!


Gene

ral W

orkf

lowIntro Why Blender? Black Box R&D Projects Showcase

Scene Analysis


Importance MapIntro Why Blender? Black Box R&D Projects Showcase

Importance Map

Fast.

Approximation of the complexity.



Importance Map

Very complex (Mirror + Reflact)



Importance Map

Very complex (Mirror + Reflact)

Simple zone


Gene

ral W

orkf

lowIntro Why Blender? Black Box R&D Projects Showcase

Distributed Rendering


ResultsIntro Why Blender? Black Box R&D Projects Showcase

16 Minutes. 8 Agents. B Opt.Level.121 Minutes. 1 Agent. No Opt.

Very different rendering times with no noticeable changes.


Resu

ltsIntro Why Blender? Black Box R&D Projects Showcase



Ganas: Text to Sign LanguageAutomatic Synthesis of Sign Language from written Spanish.

● Reusable Dictionary. ● Open Representation of Key Poses.

● Facial and Corporal. ● Non Lineal Animation. Dynamical blending by code.



Ganas: Text to Sign Language


ConSignos: Speech to Sign LanguageIntro Why Blender? Black Box R&D Projects Showcase

Exporter

Automatic Sing Editor

(Blender)

Skeletal Animation

+

Sign Elements

DBManual

SignCreation

DBSign

Elements

Parametric Desc.

Configuration

List of Tokens

Sockets

Essential Description

Facial Animation


Design of the CharactersIntro Why Blender? Black Box R&D Projects Showcase


ConSignos: Speech to Sign LanguageIntro Why Blender? Black Box R&D Projects Showcase

ElCano Multimodal Distributed Architecture for IndoorLocalizationUniversity of Castilla-La ManchaIndra Cátedras and Fundación Adecco




Showcase: Weather in C-LeónShowcase: Weather in C-LeónIntro Why Blender? Black Box R&D Projects Showcase


Showcase: Virtual MuseumIntro Why Blender? Black Box R&D Projects Showcase

Over 70 models. Linux + OpenGL.http://www.esi.uclm.es/museo/


Showcase: Game DevelopmentIntro Why Blender? Black Box R&D Projects Showcase

4 Free Books (over 1200 pages) on Game Development with Blender, C++, Ogre and other free multiplatform technologies.

Blender PT 2013Porto (Portugal) · 6/7 April 2013

or... “Using Blender as an Integrated Rendering Engine in R&D projects”

Engineering

Blender is Happiness in R&D Projects