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Type: Posts; User: addmx

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    Re: question about glTexImage2D in OpenGL ES 2

    ok, thanks!
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    question about glTexImage2D in OpenGL ES 2

    Hi

    First question - is there dedicated forum about OpenGL ES 2.x ?

    Second one - I'm writin OpenGL ES 2.0 implementation for some device, and I have question about behaviour of glTexImage2D;...
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    ARB_vertex_array_object usage pattern

    Hi
    What is the valid usage pattern of vertex array object ?
    I'm generating ID glGenVertexArrays then bind it (glBindVertexArray).
    Now I'm setting some states, for example:

    glEnableClientState ...
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    VBO remembers theirs offsets ?

    Hi

    Quick question:

    glBindBuffer(GL_ARRAY_BUFFER, BuffID);

    glEnableClientState (GL_VERTEX_ARRAY);
    glVertexPointer (4, GL_FLOAT, 64, 0);
    glEnableVertexAttribArray(12);...
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    Re: ati and shadow texture lockups

    Only radeons HD can shadow2Dproj in hardware.
    The old radeons (not HD) cannot do shadow map lockups - the hardware is not capable.
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    Re: GL 3.x status on ATI?

    well OpenGL 3.0 is supported on ATI but i have a little luck with it - it freezes the app or crashes the driver so frequently if some 'advanced' work is done. It is a mirracle to have app running for...
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    Re: ATI, GLSL and custom cliping planes

    Well - programer friendly or not it does not work (and specification states that gl_ClipVertex should be used)

    You suggesting that commenting gl_ClipVertex line will make the simple app to work on...
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    ATI, GLSL and custom cliping planes

    Hi

    I'v made a simple test program demonstrating that custom cliping planes do not work on ATI (I'v tested on 1900XT and 4800HD, catalysts 9.5 and 9.6)
    The link to the program is here:...
  9. Separate blend equations for FBO color attachments

    Hi

    Is there any way to set separate blend equations to differend color attachments of one FBO.
    (at least on nvidia 280 class cards with opengl 3.0 support)

    Example:
    I have fbo with 2 color...
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    Re: OpenGL 3.1 and Cg/Cg FX

    yes instanceid semantic is SUPPORTED but gp4 profile is supported ONLY on nvidia cards - so forget about cg :)
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    Re: OpenGL 3.1 and Cg/Cg FX

    sadly you cannot use CG FX if you plan to lunch you engine or any ATI radeon (or radeon HD) card :p

    The only supported profiles of cgfx on radeons are ARB vertex/fragment program 1.0 (with suxx)...
  12. ATI + two GL contexts sharing resources = trouble?

    Hi

    I have some problems with my opengl usage scenarion on radeons HD.

    I have two threads - the renderer thread and loader thread, each has it's own opengl
    context and they share resources via...
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    Re: ati and shadow texture lockups

    yes, the program is bound - something weird behavior on ati IMHO
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    Re: ati and shadow texture lockups

    wait a minute -- why this is right ?

    ...

    int tex0 = glGetUniformLocationARB(LinkedProgram, "_IN_NormalsTexture");
    int tex1 = glGetUniformLocationARB(LinkedProgram, "_IN_SColorsTexture");
    int...
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    ati and shadow texture lockups

    hi

    I have a strange problem with glsl shader.
    On nvidia it compiles, links, validates and runs just fine.
    On ATI (ATI Radeon HD 4800, GL:2.1.8577) it compiles, links
    but validation fails with...
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    Re: how to derermine if FBO format is supported ?

    sadly the driver (to be specific 185.85 (latest) on nvidia GF 7800 under vista x64) returns GL_FRAMEBUFFER_UNSUPPORTED_EXT for (GL_LUMINANCE, GL_LUMINANCE16F_ARB, GL_HALF_FLOAT_ARB) format.
    But...
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    Re: how to derermine if FBO format is supported ?

    ... and if I use GL2.1 + extensions ? - i am doomed ?
    that same for antialiasing modes (and number of samples) for each possible format ?
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    how to derermine if FBO format is supported ?

    Hi

    is there any way to determine/query if given color/depth attachment format is supported for fbo ?

    (of course without creating fbo and texture/renderbuffer and then checking if status is...
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    Re: custom clipping planes and glsl

    well I cannot 'update them' couse I have latest publically available :D

    I cannot use Oblique Frustum Clipping couse i need to apply my custom clipping plane only to SOME geometry on the scene not...
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    custom clipping planes and glsl

    How to use custom clipping planes with GLSL ?
    i'm setting glClipPlanef(...)
    and enable it glEnable(GL_CLIP_PLANE0);
    no errors returned - but no effect either :p

    in CG there is a special...
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    how to enumerate uniform variables ?

    Hi

    Is there any way in GLSL to enumerate (used) uniform variables ?
    for example i have this glsl shader:


    uniform vec4 some_var;
    void main(void)
    {
    gl_FragColor = some_var;
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    OpenGL + CG + ATI = ??

    Hi

    Are there any happy (??) ATI owners ?
    I need to know what CG profiles are supported under OpenGL on radeons HD.

    cgGLGetLatestProfile(CG_GL_FRAGMENT) returns always CG_PROFILE_ARBFP1 on...
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    Re: MSAA and access to individual samples

    Well the CG is the only reasonable shading language if *nix and windows needs to be supported, as Dark Photon says - if a lot of shaders need to be compiled / loaded in rendering thread and shaders...
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    Re: MSAA and access to individual samples

    slightly offtopic:
    is there any way to use it with CG or it is available only thru native glsl shaders ? (i use gp4fp profile to compile my CG shaders)
    Any working example would be great ;)
    ...
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    MSAA and access to individual samples

    Hi
    As my engine uses defered shading - the antialiasing support is pain in the ass ;)
    I render GBuffer to my multiple color attachment with MSAA
    but in the second phase of defered shading I need...
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