Particle System on Mainline Broke

[jnsnow]

Running partTest2.cpp:

(gdb) bt

0 0x0000000000000000 in ?? ()

1 0x000000000040648d in Angel::InitShader (vShaderFile=0x43d43f "shaders/vParticle2.glsl",

fShaderFile=0x43d427 "shaders/fParticle2.glsl", gShaderFile=0x43d410 "shaders/gParticle.glsl", gs_inType=0, 
gs_outType=5, gs_numVertOut=12) at Common/InitShader.cpp:248

2 0x000000000040495e in init () at Binaries/partTest2.cpp:45

3 0x0000000000404cb3 in main (argc=1, argv=0x7fffffffe1b8) at Binaries/partTest2.cpp:111

[InspectorConstructor]

fantastic. since partTest2 works on OSX, it appears to be a cross-platform problem. sigh. I will get a linux box and troubleshoot this week.

[jnsnow]

Hi Nick ( @InspectorConstructor ) and Nick ( @nickavv )

Let's get together furiously soon and work this out, it needs to be good to go for 4/29, but I'd like to have this done for Thursday if we can.

Let me know your preferences for when or how you'd like to approach this.

I'll update this bug if I come across any extra info.

[nuclearmistake]

HOW DOES IT FEEL, MAC USERS?! HOW DOES IT FEEL? (In jest)

:-P On Apr 23, 2013 5:00 PM, "John Snow" notifications@github.com wrote:

Hi Nick ( @InspectorConstructor https://github.com/InspectorConstructor) and Nick ( @nickavv https://github.com/nickavv )

Let's get together furiously soon and work this out, it needs to be good to go for 4/29, but I'd like to have this done for Thursday if we can.

Let me know your preferences for when or how you'd like to approach this.

I'll update this bug if I come across any extra info.

— Reply to this email directly or view it on GitHubhttps://github.com/UMLComputerGraphics/GraphicsProject/issues/51#issuecomment-16886159 .

[nickavv]

I can do Thursday On Apr 23, 2013 5:00 PM, "John Snow" notifications@github.com wrote:

Hi Nick ( @InspectorConstructor https://github.com/InspectorConstructor) and Nick ( @nickavv https://github.com/nickavv )

Let's get together furiously soon and work this out, it needs to be good to go for 4/29, but I'd like to have this done for Thursday if we can.

Let me know your preferences for when or how you'd like to approach this.

I'll update this bug if I come across any extra info.

— Reply to this email directly or view it on GitHubhttps://github.com/UMLComputerGraphics/GraphicsProject/issues/51#issuecomment-16886159 .

[jnsnow]

I can make Thursday work. I'll buy dinner. --jh

On Tue, Apr 23, 2013 at 5:27 PM, Nick Ver Voort notifications@github.comwrote:

I can do Thursday On Apr 23, 2013 5:00 PM, "John Snow" notifications@github.com wrote:

Hi Nick ( @InspectorConstructor https://github.com/InspectorConstructor) and Nick ( @nickavv https://github.com/nickavv )

Let's get together furiously soon and work this out, it needs to be good to go for 4/29, but I'd like to have this done for Thursday if we can.

Let me know your preferences for when or how you'd like to approach this.

I'll update this bug if I come across any extra info.

— Reply to this email directly or view it on GitHub< https://github.com/UMLComputerGraphics/GraphicsProject/issues/51#issuecomment-16886159>

.

— Reply to this email directly or view it on GitHubhttps://github.com/UMLComputerGraphics/GraphicsProject/issues/51#issuecomment-16887653 .

[jnsnow]

Current status: vf2 segfaults partTest2 produces some output (a rainbow smoke trail) !! this is a change! partTest segfaults (No color function) FinalProject segfaults (as above)

[nickavv]

A rainbow smoke trail???

[jnsnow]

Yeah, it's like the "smoke trail" demo you showed in class today, except instead of yellow, it's rainbow colors...

is it seriously not supposed to be doing that?

Because that's a really cool thing to do by accident.

[nickavv]

No, it's supposed to look like a candle flame, which should now be blue at the base and orange and red above that. I just pulled, and it looks this way for me, not sure why you're seeing that

[franckamayou]

I have blue, orange and red here..

[jnsnow]

awesome.

[InspectorConstructor]

so the init shader bugs were (OH GOD PLEASE, PLEEEEEEEEEEEEEEEASE) corrected, still working about partTest and partTest2

[InspectorConstructor]

ok nope, still broken on linux. no idea why, and no idea how to fix. geometry shaders on linux: omgwtfbbq repair attempts remaining: 3 repair tactic: dart_throw

In Angel::InitShader(): 1) remove the calls to glProgramParameteriEXT() and see if it works. 2) replace the calls to glProgramParameteriEXT() with glProgramParameteri() and see if it works.

If all else fails,

3) remove the geometry shader and render the particles as GL_POINTS.

[ImperatorFeles]

And it's fixed with 50c0729ff2c79cf7eb0e9c0788a20938cb09180d

The issue with particles on Linux was calling srand() every time we tried to get a random value. After deleting the call, everything was gravy.