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Type: Posts; User: Jeffg

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  1. Basic GLSL problems - garbled sprite textures on Intel HD Graphics

    I'm having some problems with point sprite textures on the Intel HD Graphics card that comes with the Dell 790. The textures produce random garbage each frame. If I remove the Fragment shader,...
  2. Thread: Loop color data?

    by Jeffg
    Replies
    5
    Views
    969

    Re: Loop color data?

    Thanks - That would surely save on memory. :)
  3. Thread: Loop color data?

    by Jeffg
    Replies
    5
    Views
    969

    Re: Loop color data?

    10k could be much higher.. depends on the data. Could be 1,000,000. Wasn't aware of a way with the color pointer, but thought perhaps there was some trick or that a varying could be toggled by the...
  4. Thread: Loop color data?

    by Jeffg
    Replies
    5
    Views
    969

    Loop color data?

    So I have 10,000 lines and I'm trying to reduce the amount of color data I have on my card.

    So right now I have 20,000 vertexs for the 10,000 lines, * 4, so 80,000 color floats. Is this really...
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    Re: Overlapping creates massive slow down

    No meaningful change in performance when disabling blending, turning off alpha, disabling line smooth, or decreasing line width.
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    Re: Overlapping creates massive slow down

    Most of the textures are the same texture being applied to many sprites in a VBO, so there are few bind operations. Depth recursion is something I made up to describe the possible process of showing...
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    Overlapping creates massive slow down

    I'm not sure if it's due to using alpha or blending or what, but if I have 10,000 textures or 10,000 lines spread out, performance is great, but if those textures or lines get bunched up where they...
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    Re: OpenGL & Swing hw / lw issues - help

    Sorry, was out for a bit. Here is a screenshot of what it should look like. I need to give the user some scrollable area that has hyperlinks, when they click the hyperlink, it will minimize my...
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    Re: OpenGL & Swing hw / lw issues - help

    They would be on the same screen. I guess the thing that I don't understand with rendering as a images is how it tracks scrolling, the placement of text, the triggers for hyperlinks, etc. The user...
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    OpenGL & Swing hw / lw issues - help

    I need to present a html page in my opengl app. I'm looking at using JEditorPane, but I'm having trouble keeping it in front of the program. Suggestions?
  11. Re: gl_PointSize - point size based on screen height?

    To clarify.. It's not screen height, but frame or container height of the program. Since I was in full screen, it equaled screen height.
  12. Re: gl_PointSize - point size based on screen height?

    As a temporary work around, I've done this.. but I don't know the rhyme or reason for it. I'm sure there is something simple I must be missing.

    Instead of a static 200.0 * pointSize/ -modv.z;
    I...
  13. gl_PointSize - point size based on screen height?

    Most of my images are point sprites and I've written a shader to scale the point size based on distance. However, I now need to rotate a quad around my point - all good. Except, when the resolution...
  14. Thread: Infinite zoom

    by Jeffg
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    1,595

    Infinite zoom

    I'd like to create a scene like when you zoom out or in when looking at our universe. As you zoom out, which seems very large, a solar system is replaced with a single icon. As you zoom in, that...
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    Re: VBO Triangle Strip

    Thanks for the great response. Not developing for mobile. I'm not sure how I would approach the triangles, since there is a lot going on with it. I'm not sure how to translate the normals,...
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    VBO Triangle Strip

    I have a triangle strip I'm using to create a line. It uses 8 vertices (so 6 triangles) to create it. Now I have 1000 lines, for a total of 8000 vertices (6000 triangles). I place this into a VBO...
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    Re: Help with Triangle strip

    Disregard... I still don't know how it works, but I have it working now. So I can accept the magic and move on.
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    Re: Help with Triangle strip

    Do I need to provide more information? I'm really stuck on this. How does this create 6 triangles out of two points?

    Here is the vert shader, VertexAttrib above applies to "other".
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    Help with Triangle strip

    I'm trying to understand this code below and it has me confused (Attempting to convert Volumetric lines to Java). 6 triangles are used for each line (8 vertex).

    What I don't get is that the...
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    Re: Creating a scalable universe

    Ok, so lets say I've created this graph universe and the points (Nodes) are broken up into cubes and I can navigate through this space. What are the thoughts on link lines? Currently, all my link...
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    Re: Creating a scalable universe

    In a 3d world, would that be 23 cubes - cube for every direction? Also, how would you go about indexing all your vertex points so that you know what to load into the surrounding cubes. Would you...
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    Creating a scalable universe

    Working on creating a universe like model, where there could be millions of objects (data points). I currently place all my vectors for the objects, colors, etc into a VBO. But how large can this...
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    Re: JVM won't die after shader compile

    Correction above.. I didn't have System.exit(0) before my "taskkill" as I never needed System.exit() in the past as it closed normally. If I do put in System.exit(0) before my taskkill, the taskkill...
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    Re: JVM won't die after shader compile

    I did run it with admin privileges and there is no -F option on Windows.

    Perhaps this is some new security in Windows 7 that is preventing a proper close of the JVM?
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    Re: JVM won't die after shader compile

    Ok.. ran jstack. It runs fine when the program is running (output is below). If I close the application (JVM still running because it won't close), jstack gives me "Access Denied".

    Here is the...
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