rygorous

If you want to get rid of the LUTs:

lut16
=====

Assume a 4-bit x=abcd (a, b, c, d are bits) "spread" such that:
  x_4bits = 0x0a0b0c0d;
(this can be done with 2 "shift-and-select" class operations, for instance).

Then compute:

rygorous

; input: 4x F16 in XMM0 (low words of each DWord)
; original idea+implementation by Dean Macri

; WARNING: copy & pasted together from other code, this ver is untested!!
; though the original version was definitely correct.

bits 32

section .data

rygorous

// half->float variants.
// by Fabian "ryg" Giesen.
//
// I hereby place this code in the public domain.
// 
// half_to_float_fast: table based
// tables could be done in a more compact fashion (in particular, can store tab2 in low word of tab1!)
// but something of a dead end since not very SIMD-friendly. pretty much abandoned at this point.
//
// half_to_float_fast2: use FP adder hardware to deal with denormals.

rygorous

// float->half variants.
// by Fabian "ryg" Giesen.
//
// I hereby place this code in the public domain, as per the terms of the
// CC0 license:
//
//   https://creativecommons.org/publicdomain/zero/1.0/
//
// float_to_half_full: This is basically the ISPC stdlib code, except
// I preserve the sign of NaNs (any good reason not to?)

rygorous

export void good(uniform int output[], uniform const int a[], uniform const int b[], uniform unsigned int count)
{
        count &= ~15;
        foreach (i = 0 ... count)
        {
                // This function works as you'd expect
                int x = a[i];
                int y = b[i];
                output[i] = (x > 0) ? x : y;
        }

rygorous

// float->sRGB8 conversions - two variants.
// by Fabian "ryg" Giesen
//
// I hereby place this code in the public domain.
//
// Both variants come with absolute error bounds and a reversibility and monotonicity
// guarantee (see test driver code below). They should pass D3D10 conformance testing
// (not that you can verify this, but still). They are verified against a clean reference
// implementation provided below, and the test driver checks all floats exhaustively.
//

rygorous

// float->sRGB8 conversions - two variants.
// by Fabian "ryg" Giesen
//
// I hereby place this code in the public domain.
//
// Both variants come with absolute error bounds and a reversibility and monotonicity
// guarantee. They should pass D3D10 conformance testing.
//
// This is an ISPC port of https://gist.github.com/2203834 - see there for a test
// driver and code that computes the tables.

rygorous

#include "types.h"
#include "opsys.h"
#include "texture.h"
#include "opdata.h"
#include "rtlib.h"
#include "math3d_2.h"

// for text stuff
#define WIN32_LEAN_AND_MEAN
#include <windows.h>

rygorous

// stats.js r9 - http://github.com/mrdoob/stats.js
var Stats=function(){var h,a,r=0,s=0,i=Date.now(),u=i,t=i,l=0,n=1E3,o=0,e,j,f,b=[[16,16,48],[0,255,255]],m=0,p=1E3,q=0,d,k,g,c=[[16,48,16],[0,255,0]];h=document.createElement("div");h.style.cursor="pointer";h.style.width="80px";h.style.opacity="0.9";h.style.zIndex="10001";h.addEventListener("mousedown",function(a){a.preventDefault();r=(r+1)%2;0==r?(e.style.display="block",d.style.display="none"):(e.style.display="none",d.style.display="block")},!1);e=document.createElement("div");e.style.textAlign=
"left";e.style.lineHeight="1.2em";e.style.backgroundColor="rgb("+Math.floor(b[0][0]/2)+","+Math.floor(b[0][1]/2)+","+Math.floor(b[0][2]/2)+")";e.style.padding="0 0 3px 3px";h.appendChild(e);j=document.createElement("div");j.style.fontFamily="Helvetica, Arial, sans-serif";j.style.fontSize="9px";j.style.color="rgb("+b[1][0]+","+b[1][1]+","+b[1][2]+")";j.style.fontWeight="bold";j.innerHTML="FPS";e.appendChild(j);f=document.createElement("div");f.style.position="relati

rygorous

(All issues here reported for P4V NTX64/2012.1/459107 on Windows 7)

P4V UI/Workflow issues
======================

- Feature request: Auto-"Refresh all" when switching current task to P4V (WM_ACTIVATEAPP).
  Reason: I frequently Alt-Tab to P4V to add a newly created file, only to not find it the
    first time, then hit F5, then actually get to add it. "Refresh all" seems to be
    reasonably fast, so why not automatically do it when the Window has to repaint anyway?
- Feature request: "Edit Current Workspace" dialog (or maybe "Environment Variables"?)