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Type: Posts; User: artariel

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1. ## Thread: When Do I Need Inverse Bind Poses In MD5 Models ?

by artariel
Replies
1
Views
474

### When Do I Need Inverse Bind Poses In MD5 Models ?

I researched a lot about md5 model format, but some of the examples store the inverse bind pose. As far as i know, md5 model translation and orientations are absolute, not relative and inverse bind...
2. ## Thread: Light source on random position in the world

by artariel
Replies
3
Views
1,312

### i think the problem was about w coordinate of...

i think the problem was about w coordinate of light. i have just set it to 1.0 and it seems to be static now :P

edit: yep it works great. i dont know why w fixed it
3. ## Thread: Light source on random position in the world

by artariel
Replies
3
Views
1,312

### Light source on random position in the world

Examples i have seen so far are always about lighting one object, when i tried to apply this on a terrain generator example, things were changed. I am setting a position for light, applying...
4. ## Thread: Just simple, clear questions about Basics of 3D

by artariel
Replies
9
Views
1,366

### what is "homogenous coordinates" of an object ?...

what is "homogenous coordinates" of an object ? Fixed location in space, like everything in 2d has ? I read that in definition of gl_vertex, homogenous coordinates of a vertex point.
5. ## Thread: Just simple, clear questions about Basics of 3D

by artariel
Replies
9
Views
1,366

### so if i multiple real coordinates (i mean the one...

so if i multiple real coordinates (i mean the one we do with gltranslatef()) with gl_modelviewmatrix, i will get eye coordinates. once everything is in the same space, i can freely compute them with...
6. ## Thread: Just simple, clear questions about Basics of 3D

by artariel
Replies
9
Views
1,366

### What happens when i multiple gl_vertex by...

What happens when i multiple gl_vertex by gl_modelviewmatrix in gl_position ? which space will i get with both gl_modelviewmatrix and gl_modelviewprojectionmatrix ?
7. ## Thread: Just simple, clear questions about Basics of 3D

by artariel
Replies
9
Views
1,366

### One more : Is what i do in GLSL done in eye space...

One more : Is what i do in GLSL done in eye space ?
8. ## Thread: Just simple, clear questions about Basics of 3D

by artariel
Replies
9
Views
1,366

### Just simple, clear questions about Basics of 3D

It is too bad that i have always worked with 2D coordinate system, so everything was just simple, just snap things around x,y

-What is Eye Space
-What is Model Space
-What is Modelview
-What is...
9. ## Thread: Outline with GLSL ?

by artariel
Replies
7
Views
2,194

### i still couldn't find any stable outline method....

i still couldn't find any stable outline method. one doesn't work with terrains, one doesn't work with simple materials, one lags etc..
10. ## Thread: My 'view' direction in glsl

by artariel
Replies
17
Views
3,467

### now in this code, everything is black

now in this code, everything is black
11. ## Thread: My 'view' direction in glsl

by artariel
Replies
17
Views
3,467

### it seems i lack too much information about...

it seems i lack too much information about opengl.. since every example and tutorial is REALLY old and out of current techniques, i can't seem to find a correct lessons for opengl..
12. ## Thread: My 'view' direction in glsl

by artariel
Replies
17
Views
3,467

### i am already setting it gl_Position =...

i am already setting it

gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;

doesn't it give me the real world coordinates ?
13. ## Thread: My 'view' direction in glsl

by artariel
Replies
17
Views
3,467

### what i can't understand is gl_position doesn't...

what i can't understand is gl_position doesn't work correctly, or as i wanted it to work. I am passing camera position to glsl and substract it from gl_position, normalize and dot product with...
14. ## Thread: My 'view' direction in glsl

by artariel
Replies
17
Views
3,467

### i think i must find another way to do an outline...

i think i must find another way to do an outline effect.. i had found another way but i couldn't make stencil buffer work with VBOs..
15. ## Thread: My 'view' direction in glsl

by artariel
Replies
17
Views
3,467

### umm then passing variables -i mean computing in...

umm then passing variables -i mean computing in cpu instead of gpu- is the best way for now ?
16. ## Thread: My 'view' direction in glsl

by artariel
Replies
17
Views
3,467

### thanks but isn't there any way to calculate it in...

thanks but isn't there any way to calculate it in vertex shader instead of passing variables ?
17. ## Thread: My 'view' direction in glsl

by artariel
Replies
17
Views
3,467

### My 'view' direction in glsl

How can i calculate where does my entire screen look at, in 3d vector ? I mean, what is my camera's direction in glsl ? I will try to code an outline shader so i must dot product terrain normals with...
18. ## Thread: Outline with GLSL ?

by artariel
Replies
7
Views
2,194

### uh oh code above did not work with my terrains

uh oh code above did not work with my terrains
19. ## Thread: Outline with GLSL ?

by artariel
Replies
7
Views
2,194

### okay this is what i do and it worked : but...

okay this is what i do and it worked :

but i found it a bit wrong, because i have to call useprogram(0) because it also shades the backculling so i can't have a true-black outline. but i...
20. ## Thread: Outline with GLSL ?

by artariel
Replies
7
Views
2,194

### thanks. do you know how to apply method "draw...

thanks. do you know how to apply method "draw twice, one with back culling" using VBOs ?
21. ## Thread: Outline with GLSL ?

by artariel
Replies
7
Views
2,194

### Outline with GLSL ?

Since I couldn't find any way to outline models drawn with VBOs, i started to find a GLSL way. I am creating a toon shader, it successfully works with lights but there's last thing to do : Outline...
22. ## Thread: Texture1D and Texture3D, how ?

by artariel
Replies
2
Views
987

### Texture1D and Texture3D, how ?

I can imagine 1d texture, just simple a line with only x or y coordinate but what is a 3d texture and why,when,where should i use them both ?
23. ## Thread: Colors on terrain, glcolorpointer ?

by artariel
Replies
13
Views
1,384

### it's actually useful as you said. think of a...

it's actually useful as you said. think of a train and rail system and their angle according to the normals :P
24. ## Thread: Colors on terrain, glcolorpointer ?

by artariel
Replies
13
Views
1,384

### so normals are used only for lights (?) ...

so normals are used only for lights (?)

nothing else ?
25. ## Thread: Difference between vertex and fragment shader ?

by artariel
Replies
5
Views
1,678

### these positions are related to texture ? are they...

these positions are related to texture ? are they used for picking pixels (something like getpixel(x,y)) ? and why st or xy, i have always used uv for textures.. ?
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