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Thread: stream processors compared to rops

  1. 10-05-2009 06:07 PM #1
    Jeffersonian
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    stream processors compared to rops

    How many of ATi's 5870's stream processors would it take to perfectly emulate it's 32 ROPs?

    How many for it's 80 TMUs?

    How many for it's 128 Z/stencil units?

    Could replacing the fixed function parts with more stream processors emulate DX10 rasterization perfectly?

    In other words, was the 5870 not all stream processors because that would have been too inefficient, or is it that double precision (FP64) stream processors can't perfectly emulate DX10-spec'd fixed function parts?

    I've always wanted to know that, so any replies will be appreciated.
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  2. 10-06-2009 12:37 AM #2
    W1zzard
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    by design shaders can do neither of the functions you mentioned. you would need to put whatever functionality you want into the shader alus
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  3. 10-06-2009 05:21 AM #3
    Jeffersonian
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    Thanks=) So shaders can't emulate rasterization?
    Truth Is Treason In the Empire Of Lies. ~ Ron Paul

    We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable rights, that among these are life, liberty and the pursuit of happiness. That to secure these rights, governments are instituted among men, deriving their just powers from the consent of the governed. That whenever any form of government becomes destructive to these ends, it is the right of the people to alter or to abolish it, and to institute new government, laying its foundation on such principles and organizing its powers in such form, as to them shall seem most likely to effect their safety and happiness.
    ~ Declaration of Independence

    A democracy is nothing more than mob rule, where fifty-one percent of the people may take away the rights of the other forty-nine. ~ Thomas Jefferson

    http://www.youtube.com/watch?v=ZtcWU1lyssk
    (Obamanation song. LOVE IT!)

    Extremism in the defense of liberty is no vice! And let me remind you that moderation in the pursuit of justice is no virtue. ~Sen. Goldwater
    full reserve, free banking=sound money, no bank runs. I wish people could understand that.
    Taxes are less worse than inflation and borrowing.
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  4. 10-06-2009 07:14 PM #4
    Jeffersonian
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    bump
    Truth Is Treason In the Empire Of Lies. ~ Ron Paul

    We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable rights, that among these are life, liberty and the pursuit of happiness. That to secure these rights, governments are instituted among men, deriving their just powers from the consent of the governed. That whenever any form of government becomes destructive to these ends, it is the right of the people to alter or to abolish it, and to institute new government, laying its foundation on such principles and organizing its powers in such form, as to them shall seem most likely to effect their safety and happiness.
    ~ Declaration of Independence

    A democracy is nothing more than mob rule, where fifty-one percent of the people may take away the rights of the other forty-nine. ~ Thomas Jefferson

    http://www.youtube.com/watch?v=ZtcWU1lyssk
    (Obamanation song. LOVE IT!)

    Extremism in the defense of liberty is no vice! And let me remind you that moderation in the pursuit of justice is no virtue. ~Sen. Goldwater
    full reserve, free banking=sound money, no bank runs. I wish people could understand that.
    Taxes are less worse than inflation and borrowing.
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  5. 10-07-2009 05:42 PM #5
    Chumbucket843
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    texture filtering takes a massive performance hit when using software rather than fixed function. it would be like playing a game with xbox1 textures.
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  6. 02-09-2010 09:17 AM #6
    Jeffersonian
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    okay, say the GPU was as follows:
    2560 CUDA stream processors (FP128 precision) @ 4GHz (takes the place of ROPs, Z/stencil units)
    16MB L2 cache
    128 TMUs @ 750 MHz that did uncompressed RGBAxFP24 textures up to 32k^2 with non-optimized trilinear+8x angle independent AF
    1.28 GB GDDR5 (4.8gbps) on 320 bit bus

    Would the above be as fast as a GTS250?
    Truth Is Treason In the Empire Of Lies. ~ Ron Paul

    We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable rights, that among these are life, liberty and the pursuit of happiness. That to secure these rights, governments are instituted among men, deriving their just powers from the consent of the governed. That whenever any form of government becomes destructive to these ends, it is the right of the people to alter or to abolish it, and to institute new government, laying its foundation on such principles and organizing its powers in such form, as to them shall seem most likely to effect their safety and happiness.
    ~ Declaration of Independence

    A democracy is nothing more than mob rule, where fifty-one percent of the people may take away the rights of the other forty-nine. ~ Thomas Jefferson

    http://www.youtube.com/watch?v=ZtcWU1lyssk
    (Obamanation song. LOVE IT!)

    Extremism in the defense of liberty is no vice! And let me remind you that moderation in the pursuit of justice is no virtue. ~Sen. Goldwater
    full reserve, free banking=sound money, no bank runs. I wish people could understand that.
    Taxes are less worse than inflation and borrowing.
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  7. 02-10-2010 08:37 PM #7
    Jeffersonian
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    bump. let me know if any clarifications are needed.
    Truth Is Treason In the Empire Of Lies. ~ Ron Paul

    We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable rights, that among these are life, liberty and the pursuit of happiness. That to secure these rights, governments are instituted among men, deriving their just powers from the consent of the governed. That whenever any form of government becomes destructive to these ends, it is the right of the people to alter or to abolish it, and to institute new government, laying its foundation on such principles and organizing its powers in such form, as to them shall seem most likely to effect their safety and happiness.
    ~ Declaration of Independence

    A democracy is nothing more than mob rule, where fifty-one percent of the people may take away the rights of the other forty-nine. ~ Thomas Jefferson

    http://www.youtube.com/watch?v=ZtcWU1lyssk
    (Obamanation song. LOVE IT!)

    Extremism in the defense of liberty is no vice! And let me remind you that moderation in the pursuit of justice is no virtue. ~Sen. Goldwater
    full reserve, free banking=sound money, no bank runs. I wish people could understand that.
    Taxes are less worse than inflation and borrowing.
    Reply With Quote Reply With Quote
  8. 02-11-2010 10:10 AM #8
    EniGmA1987
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    Honestly I dont think anyone knows. WHy? Because such a thing doesnt exist so no one has a way of saying what the performance would be like.
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