public static float *stbi__ldr_to_hdr(byte *data, int x, int y, int comp)
{
var i = 0;
var k = 0;
var n = 0;
float *output;
if (data == null)
{
return(null);
}
output = (float *)stbi__malloc_mad4(x, y, comp, sizeof(float), 0);
if (output == null)
{
CRuntime.free(data);
return((float *)(ulong)(stbi__err("outofmem") != 0 ? 0 : 0));
}
if ((comp & 1) != 0)
{
n = comp;
}
else
{
n = comp - 1;
}
for (i = 0; i < x * y; ++i)
{
for (k = 0; k < n; ++k)
{
output[i * comp + k] =
(float)(CRuntime.pow(data[i * comp + k] / 255.0f, stbi__l2h_gamma) * stbi__l2h_scale);
}
}
if (n < comp)
{
for (i = 0; i < x * y; ++i)
{
output[i * comp + n] = data[i * comp + n] / 255.0f;
}
}
CRuntime.free(data);
return(output);
}
public static byte *stbi__hdr_to_ldr(float *data, int x, int y, int comp)
{
var i = 0;
var k = 0;
var n = 0;
byte *output;
if (data == null)
{
return(null);
}
output = (byte *)stbi__malloc_mad3(x, y, comp, 0);
if (output == null)
{
CRuntime.free(data);
return((byte *)(ulong)(stbi__err("outofmem") != 0 ? 0 : 0));
}
if ((comp & 1) != 0)
{
n = comp;
}
else
{
n = comp - 1;
}
for (i = 0; i < x * y; ++i)
{
for (k = 0; k < n; ++k)
{
var z = (float)CRuntime.pow(data[i * comp + k] * stbi__h2l_scale_i, stbi__h2l_gamma_i) * 255 +
0.5f;
if (z < 0)
{
z = 0;
}
if (z > 255)
{
z = 255;
}
output[i * comp + k] = (byte)(int)z;
}
if (k < comp)
{
var z = data[i * comp + k] * 255 + 0.5f;
if (z < 0)
{
z = 0;
}
if (z > 255)
{
z = 255;
}
output[i * comp + k] = (byte)(int)z;
}
}
CRuntime.free(data);
return(output);
}