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Type: Posts; User: wycwang

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  1. Replies
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    Re: emulate openGL ES 2 on my pc

    hi all:
    does any one know how to "step trace" shader code in AMD emulator?
    should i use any other developement tools???
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    2,447

    the iphone cool effect

    deal all:
    the iphone have many cool effect, one of them is page flipping

    does anyone know how to implement this effect? ( algorithm of other reference )

    thanks.
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    4,310

    Re: tesselate VG path data to triangles

    hi both:
    thanks for your reply,
    i think the stencil buffer solution is easier understand than GLU tessellation NOW, but the shiva (or red book)only implement even/odd fill rule,
    i am not sure how...
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    4,310

    tesselate VG path data to triangles

    hi all:
    i implement a svg-t software engine on opengles, but the biggest problem is the tessellation.
    i need to tessellate the path data to triangle vertices.

    any one give me some hint, where...
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    4,487

    a question about glTexImage2D

    HI ALL:

    i have a question about how to implemente glTexImage2D function,
    because the parameter 'format' and the parameter 'internalformat' must be the same,

    should i copy texture data form the...
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    4,667

    does anyone know that?

    does anyone know that?
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    6,387

    a compile error message from PowerVR SDK

    hi all:
    i have downloaded the PVR OpenVG SDK
    and i hae compiled the sample program named initialization
    but some error message appear, one of them is


    'HMONITOR' undeclared identifier.

    i...
  8. Replies
    1
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    4,667

    how to fixed this warning message

    dear all:
    i have written a S/W rensder use ARM inline assembly, the code fragment like bellow:

    int *adrDst;
    int Color[4];

    .............

    adrDst = context->colordata
  9. Replies
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    5,612

    i want to use this skill to optimize my OpenGL ES...

    i want to use this skill to optimize my OpenGL ES SW engine.
  10. Replies
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    5,612

    ARM self-modifying code

    dear all:
    does any one ever write ARM self-modifying code? (ARM 11)
    are there any source code for example?
  11. Replies
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    4,996

    a question about glTexImage2D

    hi all:

    when both width and height equal zero, will the glTexImage2D still generate a valid texture?
  12. Replies
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    5,137

    hi Nils: thanks for your reply. i have check...

    hi Nils:
    thanks for your reply.

    i have check the OpenGL ES 1.x extension and find :

    "should the matrix palette be gettable?"

    "No."
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    5,137

    how to query palette matrix

    hi all:
    the value if modelview/projection/texture matrix can be query via OpenGL ES 1.1 API, but how to query pelette matrix?
  14. Replies
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    4,715

    user clipping plane

    hi all:
    the spec. specific the user define clipping plane coefficients in object space
    and must transform to viewing space and perform DOT operation with a viewing space vertex.

    if i want to...
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    5,132

    minimum matrix palette size

    hi all:
    the minimum matrix palette size is 16 or 9?
    i read the extension spec. it show that the number is 9.
    but some documentation show that the minimum number is 16.
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    4,736

    hi Xmas: thanks for your reply, which one is...

    hi Xmas:
    thanks for your reply,
    which one is the powerVR's solution?
    truncate or rounding?
  17. Replies
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    4,736

    alpha test reference value

    hi all:
    the ref parameter of glAlphaFuncx is fixed point, but when alpha compare
    the alpha value from color is 8 bits, so the ref nust convert from fixed point to 8 bit, so must mapping [0..1] to...
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    5,800

    hi anyone know form the implemtntation...

    hi
    anyone know form the implemtntation perspective,
    what the OpenGL ES core addition different form require extension? core addition must be implement and it seems that require extension also.
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    hi Xmas: you are right, my OpenGL ES implement...

    hi Xmas:
    you are right, my OpenGL ES implement is a software solution
    cube map normalization need : find the maximun magnitude of vector and
    reciprocal operation.
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    "required extension" and "core addition"

    hi all:

    for OpenGL ES
    what different between "required extension" and "core addition"???
  21. Replies
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    10,436

    a index to access array.

    a index to access array.
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    10,436

    i think the cube map normalization is a nice...

    i think the cube map normalization is a nice idea, but how to compute the access index is another issue....
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    NOKIA 6630 memory clock

    HI :

    i develop a software OpenGL ES 1.0 render now, and my performance target is GLBenchMark score of Nokia 6630(OMAP1710).

    I only know that CPU clock of Nokia 6630 is 220MHz.
    but I don't know...
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    hi Nils this methos seems need a division...

    hi Nils
    this methos seems need a division operation(or a reciprocal).
    because my reciprocal operation was implement using Newton raphson too
    i think this method wouldn't faster.
  25. Replies
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    10,436

    hi Nils this methos seems need a division...

    hi Nils
    this methos seems need a division operation(or a reciprocal).
    because my reciprocal operation was implement using Newton raphson too
    i think this method wouldn't faster.
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