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  1. codeblocks settings

    hi,

    i dont know all the libs you use, but basicly the prozess with libs is always the same...
    i explained it in one of my wrkshops .. maybe you wanne check the codeblocks settings in thisone:...
  2. Hi there, maybe you wanne start here:...

    Hi there,

    maybe you wanne start here: https://www.youtube.com/watch?v=_OAYRV5fjuE
    Its my tutorial for almost exactly what you wanne do ... but we end up with a triangle and not a cube.
    But its a...
  3. hi ther, when you start opengl you may have...

    hi ther,

    when you start opengl you may have many questions.
    maybe you wanne get some basic information here:
    http://www.opengl2go.net/2015/10/07/published-001-welcome-to-the-3d-world/

    Or...
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    hi, i guess we need to see the complete code,...

    hi,

    i guess we need to see the complete code, to see your main loop or your callback funcs.

    uwi2k2
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    hi there, without any idea of opengl it will...

    hi there,

    without any idea of opengl it will be very hard !
    and a include problem is more a c/c++ issue...
    anyway ... for people like you i did my opengl beginner podcast... a earsy way to get...
  6. Thread: Shadow mapping

    by uwi2k2
    Replies
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    639

    hi, sounds to me like you are missing the basic...

    hi,
    sounds to me like you are missing the basic idea of how to do it ...
    maybe just to get you started, a little easy help:
    http://www.opengl2go.net/2016/01/30/published-011-lights-and-shadows/
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    449

    hi there, i have given a very detailed...

    hi there,

    i have given a very detailed intoduction on how to set up freeglut in my last workshop, maybe it gives you a idea:
    https://www.youtube.com/watch?v=_OAYRV5fjuE

    regards
    uwi2k2
  8. Replies
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    353

    hi, i cant see the bug in your code, but...

    hi,

    i cant see the bug in your code,
    but maybe you wanne start more `simple` ... some basic opengl ...
    So mybe try this one .. its slow and step by step:...
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    Hi, basicly its like loading anything else...

    Hi,

    basicly its like loading anything else from a file...
    Do you have the propper understanding of Textures and UV Coordinates ?
    Maybe just start here:...
  10. hi there, for the beginners among you, i will...

    hi there,

    for the beginners among you, i will offer a "free opengl online workshop for beginners" in late November 2015 and / or December 2015......
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    Hi, for basic understanding you may start...

    Hi,

    for basic understanding you may start here:
    http://www.opengl2go.net/2015/10/17/published-006-introduction-to-shaders/

    And if you wanne find input for the OLD way of shaders ( 2.1 ) look...
  12. hi there, maybe i can help you with my podcast...

    hi there,

    maybe i can help you with my podcast episode that i recorded about how set up freeglut and glew the right way ...
    003 – Your First Window With OpenGL Context. With FreeGLUT & GLEW....
  13. Podcast on OpenGL & Vulkan for beginners and advanced Users

    Hi all,

    i am following this forum for a long time, and as some of the questions come up over and over again i just decided to start a Podcast on OpenGL.

    You can find it on iTunes:...
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    How realistic and precise is OpenGL ??

    Hi there ,

    today i was just wondering how accurate opengl rendering is ?
    does anyone know a project were people have compared a rendered 3d szene to a photo taken from reality ..
    to masure if...
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    hi, i just took a quik look, but i am very...

    hi,

    i just took a quik look, but i am very sure you forget to rotate the normals.
    as the normals are relevant for the dotproduct of light, you need to have a matrix that only includes rotation ....
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    hi, for the plane the basic problem may be the...

    hi,

    for the plane the basic problem may be the result of the dot() product.
    if your light is shining straight from left to rigrt at its position, than the left half of the plane would be < 1....
  17. hi there, taking a look at you FS i see that...

    hi there,

    taking a look at you FS i see that it will cause problems on some GPU“s.
    There are uniforms that dont have a effect on the final result of the shader ..
    so those are 'optimized away' ...
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    hi, after every frame you can copy the render...

    hi,

    after every frame you can copy the render result into a buffer and store it ti your HD.
    This is a slow prozess but as long as you keep the szene 256x256 px it should be fine ..
    sztart...
  19. hi, well there is not really the ONE format...

    hi,

    well there is not really the ONE format you should use ...
    Of course there are a lot of libs, but its always a good idea to think about :"what mesh data do i need ? "
    As there are so many...
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    hi, without looking deeper it may be that the...

    hi,

    without looking deeper it may be that the normals of your 3d model are wrong.
    open it in a 3d program and check it.

    regards
    uwi2k2
  21. Replies
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    hi, you are using the so called: fixed...

    hi,

    you are using the so called: fixed function pipeline , from opengl .. lets say the OLD WAY :-)

    So you dont need shaders and dont need to manage matrix on your own ...

    thats the best /...
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    hi, yes of course you can. e.g. You draw the...

    hi,

    yes of course you can.
    e.g. You draw the cube to a texture in you own FBO ( Frame Buffer Object ).
    Or you draw dont redraw the szene till a chenge happend.
    So in you render loop like:
    if(...
  23. hi, to check for glErrors is always a good...

    hi,

    to check for glErrors is always a good pratice to find the lines that cause your trouble !
    but you may try to change the clear color ans see if it has affect ...
    this is at least a hint that...
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    hi, ok - got it.. than you should try:...

    hi,

    ok - got it..
    than you should try: glCullFace() and hide backfaces ... it this works fine .. than the order of the triangles it really the problem ...
    than you need some complex logic to...
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    hi, well yes you can do that in opengl ... but...

    hi,

    well yes you can do that in opengl ... but first of all need to know what OS you are on ...
    in android or ios it will be opengl ES 2.0 or 3.0

    cu
    uwi2k2
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