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Add 'floateleven' buffer format for R11G11B10 packed data, fix unpacking

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baldurk
2017-03-20 13:02:20 +00:00
parent 8badc43028
commit d2d86b5726
9 changed files with 150 additions and 38 deletions
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renderdocui/Code/FormatElement.cs
+49 -9
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@@ -258,16 +258,49 @@ namespace renderdocui.Code
{
uint packed = read.ReadUInt32();
uint xMantissa = ((packed >> 0) & 0x3f);
uint xExponent = ((packed >> 6) & 0x1f);
uint yMantissa = ((packed >> 11) & 0x3f);
uint yExponent = ((packed >> 17) & 0x1f);
uint zMantissa = ((packed >> 22) & 0x1f);
uint zExponent = ((packed >> 27) & 0x1f);
uint[] mantissas = new uint[] {
(packed >> 0) & 0x3f, (packed >> 11) & 0x3f, (packed >> 22) & 0x1f,
};
uint[] leadbit = new uint[] {
0x40, 0x40, 0x20,
};
int[] exponents = new int[]{
(int)(packed >> 6) & 0x1f, (int)(packed >> 17) & 0x1f, (int)(packed >> 27) & 0x1f,
};
ret.Add(((float)(xMantissa) / 64.0f) * Math.Pow(2.0f, (float)xExponent - 15.0f));
ret.Add(((float)(yMantissa) / 32.0f) * Math.Pow(2.0f, (float)yExponent - 15.0f));
ret.Add(((float)(zMantissa) / 32.0f) * Math.Pow(2.0f, (float)zExponent - 15.0f));
for (int i = 0; i < 3; i++)
{
if (mantissas[i] == 0 && exponents[i] == 0)
{
ret.Add((float)0.0f);
}
else
{
if (exponents[i] == 0x1f)
{
// no sign bit, can't be negative infinity
if (mantissas[i] == 0)
ret.Add(float.PositiveInfinity);
else
ret.Add(float.NaN);
}
else if (exponents[i] != 0)
{
// normal value, add leading bit
uint combined = leadbit[i] | mantissas[i];
// calculate value
ret.Add(((float)combined / (float)leadbit[i]) * Math.Pow(2.0f, (float)exponents[i] - 15.0f));
}
else if (exponents[i] == 0)
{
// we know xMantissa isn't 0 also, or it would have been caught above so
// this is a subnormal value, pretend exponent is 1 and don't add leading bit
ret.Add(((float)mantissas[i] / (float)leadbit[i]) * Math.Pow(2.0f, (float)1.0f - 15.0f));
}
}
}
}
else
{
@@ -426,6 +459,7 @@ namespace renderdocui.Code
var regExpr = @"^(row_major\s+)?" + // row_major matrix
@"(" +
@"uintten|unormten" +
@"|floateleven" +
@"|unormh|unormb" +
@"|snormh|snormb" +
@"|bool" + // bool is stored as 4-byte int
@@ -608,6 +642,12 @@ namespace renderdocui.Code
fmt.special = true;
fmt.specialFormat = SpecialFormat.R10G10B10A2;
}
else if (basetype == "floateleven")
{
fmt = new ResourceFormat(FormatComponentType.Float, 3 * count, 1);
fmt.special = true;
fmt.specialFormat = SpecialFormat.R11G11B10;
}
else
{
errors = "Unrecognised basic type on line:\n" + line;