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Type: Posts; User: rtrobin

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  1. Sorry that I seems super-numbed today, maybe...

    Sorry that I seems super-numbed today, maybe because my lack of sleep recently... I find I could "Edit Post -> Delete" my last post in that thread, but I couldn' t delete whole thread. Does anybody...
  2. Thanks!! I am sorry for my cross-post. I am...

    Thanks!! I am sorry for my cross-post. I am looking for the "delete" button for my another post. How can I delete my post?...
  3. How to copy texture1 to texture2 efficiently?

    I want to copy texture1 to texture2. How can I do this efficiently?
    The most stupid method is copying tex1 data from GPU to CPU, and then copy CPU data to GPU.
    The stupid code is as below:

    ...
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    Thanks a lot! I didn' t know this well before....

    Thanks a lot! I didn' t know this well before.
    About performance consequences, will it avoid the influence if I use PBO to upload texture data, compared to directly uploading data?
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    NPOT texture allocating problem

    As I know, OpenGL has highly supported NPOT textures since 3.0. Now I' m facing an bizarre phenomenon that NPOT texture cannot be allocated with precise corresponding data.
    Words are plain. My...
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    Unfortunately, no one can be told what the Matrix...

    Unfortunately, no one can be told what the Matrix is. You have to see it for yourself.
  7. It seems that you include so many head files,...

    It seems that you include so many head files, some of that are doing same thing. Thus it cause conflicts.
    For example, glut and freeglut should only exists one. gl and glext seems not essential in...
  8. Thanks for reply. :) I use GL_LUMINANCE8...

    Thanks for reply. :)
    I use GL_LUMINANCE8 instead, but it still doesn' t work.

    BUT!!! The link you posted does help a lot!
    I used to compile the code under win32 mode. When I turn to using x64...
  9. Problem still unsolved...:sorrow::sorrow:

    Problem still unsolved...:sorrow::sorrow:
  10. Thanks for reply. :) By...

    Thanks for reply. :)
    By glGetIntegerv(GL_MAX_3D_TEXTURE_SIZE, dim), it returns 2048.
    BTW, I also do some work using CUDA. There' s no problem when I allocate 2048 cubic uchar texture in CUDA.
  11. Problems about allocating 3D texture size of 1G

    Hi, everyone! I'm doing some work on Volume Rendering. I want to allocate a 3D luminance texture of 1024x1024x1024 uchar. Unfortunately it always fails.
    By adding glGetError() after...
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