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Today, 11:13 AM

raluk22 replied to a thread Working with glFrustum and gluLookAt in OpenGL coding: beginners

Thanks a lot :) so this is the whole thing: The projection() function is where I make the transformation, in Display() case 'p' is where I call...

2 replies | 35 view(s)

Today, 10:59 AM

uwi2k2 replied to a thread Working with glFrustum and gluLookAt in OpenGL coding: beginners

hi, if the rest of the code is no big secret pls post it. so i can copy it - modefy it - and post it back .. thats mutch easyer than anything...

2 replies | 35 view(s)

Today, 10:54 AM

uwi2k2 replied to a thread Falling objects game in OpenGL coding: beginners

hi, without some code of yours we can´t help you. anyway you need a GameLoop that is running over and over again. cu uwi

1 replies | 70 view(s)

Today, 10:38 AM

raluk22 started a thread Working with glFrustum and gluLookAt in OpenGL coding: beginners

Hello everybody! I just started working with OpenGL and I have this problem with glFrustum and gluLookAt. I have to obtain the first image but the...

2 replies | 35 view(s)

Today, 08:32 AM

kaberdock replied to a thread DepthMap with glreadPixels in OpenGL coding: beginners

I found the problem, is the data type of the mat that I was saving the image. Sorry for the post

2 replies | 36 view(s)

Today, 08:22 AM

kaberdock replied to a thread DepthMap with glreadPixels in OpenGL coding: beginners

this is the image: imageshack.us/a/img267/2125/depthmap.png

2 replies | 36 view(s)

Today, 08:20 AM

kaberdock started a thread DepthMap with glreadPixels in OpenGL coding: beginners

Hello everyone, I'm trying to get a depthmap of the scene using glreadpixels, mi command is it: glReadPixels(0, 0, img.cols, img.rows,...

2 replies | 36 view(s)

Today, 06:01 AM

thokra replied to a thread write data to arbitrary position in OpenGL Shading Language

Have fun with interreflections. ;)

3 replies | 160 view(s)

Today, 05:22 AM

beorht replied to a thread write data to arbitrary position in OpenGL Shading Language

Thanks for your quick and detailed reply, i will take a look at shader image load/store and opencl you mentioned My major concern is portability and...

3 replies | 160 view(s)

Today, 04:48 AM

cordura334 started a thread Falling objects game in OpenGL coding: beginners

hello everyone i am making a falling objects game for my semester project and i am facing a problem with the code. i can't create the objects...

1 replies | 70 view(s)

Today, 04:37 AM

thokra replied to a thread Quality of Implementation: Debug shader variable locations in OpenGL drivers

The thing is, ouputting messages is costly as hell. :) And being able to have the GL report stuff on its own without querying with glGetError() is...

20 replies | 537 view(s)

Today, 04:01 AM

thokra replied to a thread write data to arbitrary position in OpenGL Shading Language

Well, shader image load/store lets you read from and write to arbitrary positions of an image - however, you'll need not only GL4 capable hardware,...

3 replies | 160 view(s)

Today, 03:17 AM

Nowhere-01 replied to a thread screen-space reflections in OpenGL coding: advanced

hey, thanks for sharing your code. i've already implemented SSR at this moment. it has some problems. but the one that bugs me the most is because of...

2 replies | 203 view(s)

Today, 03:16 AM

Aleksandar replied to a thread Quality of Implementation: Debug shader variable locations in OpenGL drivers

Nope! Just said that blocking message output does not necessarily mean not collecting information. Of course it is highly appreciable to prevent...

20 replies | 537 view(s)

Today, 12:58 AM

Nowhere-01 replied to a thread fast shadows on smooth terrain in OpenGL coding: advanced

it's not a question, stop spamming your site.

1 replies | 90 view(s)

Today, 12:28 AM

nguyenc started a thread fast shadows on smooth terrain in OpenGL coding: advanced

i have tryed a fast shadow on smooth terrain program in freebasic that works with transparent objects like trees too, and also opengl1.x and above....

1 replies | 90 view(s)

Yesterday, 06:22 PM

rakeshthp replied to a thread Contouring in OpenGL in OpenGL coding: beginners

what do i do to get labels along with the contour lines? can you share ur algorithm for more reference? Thanks

4 replies | 233 view(s)

Yesterday, 05:53 PM

beorht started a thread write data to arbitrary position in OpenGL Shading Language

Recently, i have implemented real-time reflection and gi in my cpu renderer, and I want to port them to opengl, these require offsceen writing of...

3 replies | 160 view(s)

Yesterday, 02:11 PM

troels_y replied to a thread Invalid qualifiers 'in' in global variable in OpenGL coding: beginners

I threw GLUT in the trash and switched to GLFW instead, everything works now! :) Followed the tutorial at: www.open.gl

9 replies | 238 view(s)

Yesterday, 01:05 PM

Alfonse Reinheart replied to a thread Quality of Implementation: Debug shader variable locations in OpenGL drivers

So what you're saying is that the ARB is stupid. All OpenGL implementations that don't expose ARB_debug_output in non-debug builds are just being...

20 replies | 537 view(s)

Yesterday, 12:24 PM

woshka started a thread creating 3d with mesh, problem with face in Math and Algorithms

Hello I want to create a torus I have found the points and it is easy to write to a file the code works fine when we have 4 faces around for the...

0 replies | 71 view(s)

Yesterday, 12:09 PM

thokra replied to a thread Quality of Implementation: Debug shader variable locations in OpenGL drivers

I didn't want to offend, of course. Surely it's worth knowing what you're dealing with. Since enabling debugging capabilities has to be a run-time...

20 replies | 537 view(s)

Yesterday, 11:57 AM

Aleksandar replied to a thread Quality of Implementation: Debug shader variable locations in OpenGL drivers

I do. In fact, I guess most of the additional debugging code is active in both debug and non-debug profiles, and it does not affect performance (at...

20 replies | 537 view(s)

Yesterday, 10:33 AM

MilesAway1980 started a thread Issue compiling OpenGL program that uses GLEW in OpenGL under Windows

Hi all, This is my first post here. I've been learning C++, SDL, and OpenGL the last few weeks and finally ran into a problem I can't seem to get...

0 replies | 76 view(s)

Yesterday, 07:31 AM

thomas.d started a thread Work groups with priorities in Suggestions for the next release of OpenGL

Problem: Currently, you have no way of telling/hinting the GL (or the driver) which of your commands are important (real time critical) and which...

0 replies | 89 view(s)

Yesterday, 07:27 AM

Alfonse Reinheart replied to a thread orientation and rotation in OpenGL coding: beginners

It's the difference between "turn right 90 degrees" and "face east." These will only lead to you facing the same direction if you happen to be facing...

2 replies | 89 view(s)

Yesterday, 07:22 AM

Alfonse Reinheart replied to a thread Bindless Textures + Instancing in OpenGL coding: advanced

The value is an integer. And interpolation isn't allowed for integers.

4 replies | 180 view(s)

Yesterday, 07:01 AM

cireneikual replied to a thread screen-space reflections in OpenGL coding: advanced

Here is a screen-space reflection shader I implemented: uniform sampler2D gColor; uniform sampler2D gPosition; uniform sampler2D gNormal;...

2 replies | 203 view(s)

Yesterday, 06:23 AM

RigidBody replied to a thread help with library on ubuntu in OpenGL on Linux

i cannot remember that i've ever seen a bitmap.h in /usr/include/GL under linux. did you copy the bitmap.h there manually from a windows...

1 replies | 88 view(s)

Yesterday, 05:09 AM

thokra replied to a thread Quality of Implementation: Debug shader variable locations in OpenGL drivers

Who cares? I mean, it's nice to know but, like Alfonse said, debug-contexts are for finding bugs and are not intended for production code.

20 replies | 537 view(s)

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