static void SaveTestsRGB()
{
ImageUtility.ColorProfile Profile_sRGB = new ImageUtility.ColorProfile(ImageUtility.ColorProfile.STANDARD_PROFILE.sRGB);
ImageUtility.ColorProfile Profile_Linear = new ImageUtility.ColorProfile(ImageUtility.ColorProfile.Chromaticities.sRGB, ImageUtility.ColorProfile.GAMMA_CURVE.STANDARD, 1.0f);
ImageUtility.Bitmap Gray_sRGB = new ImageUtility.Bitmap(64, 64, Profile_sRGB);
ImageUtility.Bitmap Gray_Linear = new ImageUtility.Bitmap(64, 64, Profile_Linear);
ImageUtility.Bitmap Gradient_sRGB = new ImageUtility.Bitmap(128, 16, Profile_sRGB);
ImageUtility.Bitmap Gradient_Linear = new ImageUtility.Bitmap(128, 16, Profile_Linear);
for (int Y = 0; Y < Gray_sRGB.Height; Y++)
{
for (int X = 0; X < Gray_sRGB.Width; X++)
{
Gray_sRGB.ContentXYZ[X, Y] = Profile_Linear.RGB2XYZ(new ImageUtility.float4(0.5f, 0.5f, 0.5f, 1.0f));
Gray_Linear.ContentXYZ[X, Y] = Profile_Linear.RGB2XYZ(new ImageUtility.float4(0.5f, 0.5f, 0.5f, 1.0f));
}
}
int W = Gradient_sRGB.Width;
for (int Y = 0; Y < Gradient_sRGB.Height; Y++)
{
for (int X = 0; X < Gradient_sRGB.Width; X++)
{
float C = (float)(X + 0.5f) / W;
Gradient_sRGB.ContentXYZ[X, Y] = Profile_Linear.RGB2XYZ(new ImageUtility.float4(C, C, C, 1.0f));
Gradient_Linear.ContentXYZ[X, Y] = Profile_Linear.RGB2XYZ(new ImageUtility.float4(C, C, C, 1.0f));
}
}
Gray_sRGB.Save(new FileInfo("./Gray128_sRGB.png"));
Gray_Linear.Save(new FileInfo("./Gray128_Linear.png"));
Gradient_sRGB.Save(new FileInfo("./Gradient_sRGB.png"));
Gradient_Linear.Save(new FileInfo("./Gradient_Linear.png"));
}
void TestChromaRanges()
{
ImageUtility.ColorProfile profile = new ImageUtility.ColorProfile(ImageUtility.ColorProfile.STANDARD_PROFILE.sRGB);
float3 tempFloat3 = new float3(0, 0, 0);
float4 tempFloat4 = new float4(0, 0, 0, 1);
float Ygo, Cg, Co;
ranges_t[] ranges = new ranges_t[4];
for (int lumaIndex = 0; lumaIndex < ranges.Length; lumaIndex++)
{
ranges_t range = new ranges_t();
ranges[lumaIndex] = range;
float L = (1 + lumaIndex) / 255.0f;
for (int R = 0; R < 256; R++)
{
for (int G = 0; G < 256; G++)
{
for (int B = 0; B < 256; B++)
{
tempFloat4.x = L * R;
tempFloat4.y = L * G;
tempFloat4.z = L * B;
// Convert to YCoCg
// Ygo = 0.25f * tempFloat4.x + 0.5f * tempFloat4.y + 0.25f * tempFloat4.z;
// Cg = -0.25f * tempFloat4.x + 0.5f * tempFloat4.y - 0.25f * tempFloat4.z;
// Co = 0.50f * tempFloat4.x + 0.0f * tempFloat4.y - 0.50f * tempFloat4.z;
RGB2YCoCg(tempFloat4.x, tempFloat4.y, tempFloat4.z, out Ygo, out Co, out Cg);
YCoCg2RGB(Ygo, Co, Cg, out tempFloat3.x, out tempFloat3.y, out tempFloat3.z);
if (Math.Abs(tempFloat3.x - tempFloat4.x) > 1e-6)
{
throw new Exception("RHA!");
}
if (Math.Abs(tempFloat3.y - tempFloat4.y) > 1e-6)
{
throw new Exception("RHA!");
}
if (Math.Abs(tempFloat3.z - tempFloat4.z) > 1e-6)
{
throw new Exception("RHA!");
}
// Convert to xyY
float4 XYZ = float4.Zero;
profile.RGB2XYZ(tempFloat4, ref XYZ);
tempFloat3.x = XYZ.x;
tempFloat3.y = XYZ.y;
tempFloat3.z = XYZ.z;
float3 xyY = float3.Zero;
ImageUtility.ColorProfile.XYZ2xyY(tempFloat3, ref xyY);
// Update ranges
range.Ygo_min = Math.Min(range.Ygo_min, Ygo);
range.Ygo_max = Math.Max(range.Ygo_max, Ygo);
range.Cg_min = Math.Min(range.Cg_min, Cg);
range.Cg_max = Math.Max(range.Cg_max, Cg);
range.Co_min = Math.Min(range.Co_min, Co);
range.Co_max = Math.Max(range.Co_max, Co);
range.Y_min = Math.Min(range.Y_min, xyY.z);
range.Y_max = Math.Max(range.Y_max, xyY.z);
range.x_min = Math.Min(range.x_min, xyY.x);
range.x_max = Math.Max(range.x_max, xyY.x);
range.y_min = Math.Min(range.y_min, xyY.y);
range.y_max = Math.Max(range.y_max, xyY.y);
}
}
}
}
}
/// <summary>
/// Rebuilds and assigns the bitmap for the output panel from the loaded image
/// </summary>
private void RebuildImage()
{
if ( m_BitmapXYZ == null )
return;
bool sRGB = checkBoxsRGB.Checked;
bool SpatialCorrection = checkBoxSpatialLuminanceCorrection.Checked;
ImageUtility.float4[,] Image = new ImageUtility.float4[m_BitmapXYZ.Width,m_BitmapXYZ.Height];
int W = m_BitmapXYZ.Width;
int H = m_BitmapXYZ.Height;
if ( checkBoxLuminance.Checked )
{ // Convert into luminances only
for ( int Y = 0; Y < H; Y++ )
for ( int X = 0; X < W; X++ )
{
float L = m_BitmapXYZ.ContentXYZ[X, Y].y;
if ( SpatialCorrection )
L*= m_CalibrationDatabase.GetSpatialLuminanceCorrectionFactor( (float) X / W, (float) Y / H );
if ( sRGB )
L = ImageUtility.ColorProfile.Linear2sRGB( L );
Image[X, Y].x = L;
Image[X, Y].y = L;
Image[X, Y].z = L;
}
}
else
{ // RGB
ImageUtility.float4[,] Content = m_BitmapXYZ.ContentXYZ;
if ( checkBoxSpatialLuminanceCorrection.Checked )
{
Content = new ImageUtility.float4[m_BitmapXYZ.Width,m_BitmapXYZ.Height];
Array.Copy( m_BitmapXYZ.ContentXYZ, Content, Content.LongLength );
for ( int Y=0; Y < H; Y++ )
for ( int X=0; X < W; X++ )
{
ImageUtility.float4 XYZ = Content[X,Y];
ImageUtility.float3 xyY = ImageUtility.ColorProfile.XYZ2xyY( (ImageUtility.float3) XYZ );
xyY.z *= m_CalibrationDatabase.GetSpatialLuminanceCorrectionFactor( (float) X / W, (float) Y / H );
XYZ = new ImageUtility.float4( ImageUtility.ColorProfile.xyY2XYZ( xyY ), XYZ.w );
Content[X,Y] = XYZ;
}
}
// Build conversion profile
ImageUtility.ColorProfile Profile = new ImageUtility.ColorProfile(
ImageUtility.ColorProfile.Chromaticities.sRGB, // Always use standard sRGB illuminant
sRGB ? ImageUtility.ColorProfile.GAMMA_CURVE.sRGB : ImageUtility.ColorProfile.GAMMA_CURVE.STANDARD, // Either use sRGB linear toe or a standard gamma
sRGB ? ImageUtility.ColorProfile.GAMMA_EXPONENT_sRGB : 1.0f ); // Either use sRGB gamma or linear gamma
// Convert
Profile.XYZ2RGB( Content, Image );
}
outputPanel.Image = Image;
}
static void SaveTestsRGB()
{
ImageUtility.ColorProfile Profile_sRGB = new ImageUtility.ColorProfile( ImageUtility.ColorProfile.STANDARD_PROFILE.sRGB );
ImageUtility.ColorProfile Profile_Linear = new ImageUtility.ColorProfile( ImageUtility.ColorProfile.Chromaticities.sRGB, ImageUtility.ColorProfile.GAMMA_CURVE.STANDARD, 1.0f );
ImageUtility.Bitmap Gray_sRGB = new ImageUtility.Bitmap( 64, 64, Profile_sRGB );
ImageUtility.Bitmap Gray_Linear = new ImageUtility.Bitmap( 64, 64, Profile_Linear );
ImageUtility.Bitmap Gradient_sRGB = new ImageUtility.Bitmap( 128, 16, Profile_sRGB );
ImageUtility.Bitmap Gradient_Linear = new ImageUtility.Bitmap( 128, 16, Profile_Linear );
for ( int Y=0; Y < Gray_sRGB.Height; Y++ )
for ( int X=0; X < Gray_sRGB.Width; X++ )
{
Gray_sRGB.ContentXYZ[X,Y] = Profile_Linear.RGB2XYZ( new ImageUtility.float4( 0.5f, 0.5f, 0.5f, 1.0f ) );
Gray_Linear.ContentXYZ[X,Y] = Profile_Linear.RGB2XYZ( new ImageUtility.float4( 0.5f, 0.5f, 0.5f, 1.0f ) );
}
int W = Gradient_sRGB.Width;
for ( int Y=0; Y < Gradient_sRGB.Height; Y++ )
for ( int X=0; X < Gradient_sRGB.Width; X++ )
{
float C = (float) (X+0.5f) / W;
Gradient_sRGB.ContentXYZ[X,Y] = Profile_Linear.RGB2XYZ( new ImageUtility.float4( C, C, C, 1.0f ) );
Gradient_Linear.ContentXYZ[X,Y] = Profile_Linear.RGB2XYZ( new ImageUtility.float4( C, C, C, 1.0f ) );
}
Gray_sRGB.Save( new FileInfo( "./Gray128_sRGB.png" ) );
Gray_Linear.Save( new FileInfo( "./Gray128_Linear.png" ) );
Gradient_sRGB.Save( new FileInfo( "./Gradient_sRGB.png" ) );
Gradient_Linear.Save( new FileInfo( "./Gradient_Linear.png" ) );
}
void TestChromaRanges()
{
ImageUtility.ColorProfile profile = new ImageUtility.ColorProfile(ImageUtility.ColorProfile.STANDARD_PROFILE.sRGB );
ImageUtility.float3 tempFloat3 = new ImageUtility.float3( 0, 0, 0 );
ImageUtility.float4 tempFloat4 = new ImageUtility.float4( 0, 0, 0, 1 );
float Ygo, Cg, Co;
ranges_t[] ranges = new ranges_t[4];
for ( int lumaIndex=0; lumaIndex < ranges.Length; lumaIndex++ ) {
ranges_t range = new ranges_t();
ranges[lumaIndex] = range;
float L = (1+lumaIndex) / 255.0f;
for ( int R=0; R < 256; R++ ) {
for ( int G=0; G < 256; G++ ) {
for ( int B=0; B < 256; B++ ) {
tempFloat4.x = L * R;
tempFloat4.y = L * G;
tempFloat4.z = L * B;
// Convert to YCoCg
// Ygo = 0.25f * tempFloat4.x + 0.5f * tempFloat4.y + 0.25f * tempFloat4.z;
// Cg = -0.25f * tempFloat4.x + 0.5f * tempFloat4.y - 0.25f * tempFloat4.z;
// Co = 0.50f * tempFloat4.x + 0.0f * tempFloat4.y - 0.50f * tempFloat4.z;
RGB2YCoCg( tempFloat4.x, tempFloat4.y, tempFloat4.z, out Ygo, out Co, out Cg );
YCoCg2RGB( Ygo, Co, Cg, out tempFloat3.x, out tempFloat3.y, out tempFloat3.z );
if ( Math.Abs( tempFloat3.x - tempFloat4.x ) > 1e-6 ) throw new Exception( "RHA!" );
if ( Math.Abs( tempFloat3.y - tempFloat4.y ) > 1e-6 ) throw new Exception( "RHA!" );
if ( Math.Abs( tempFloat3.z - tempFloat4.z ) > 1e-6 ) throw new Exception( "RHA!" );
// Convert to xyY
ImageUtility.float4 XYZ = profile.RGB2XYZ( tempFloat4 );
tempFloat3.x = XYZ.x;
tempFloat3.y = XYZ.y;
tempFloat3.z = XYZ.z;
ImageUtility.float3 xyY = ImageUtility.ColorProfile.XYZ2xyY( tempFloat3 );
// Update ranges
range.Ygo_min = Math.Min( range.Ygo_min, Ygo );
range.Ygo_max = Math.Max( range.Ygo_max, Ygo );
range.Cg_min = Math.Min( range.Cg_min, Cg );
range.Cg_max = Math.Max( range.Cg_max, Cg );
range.Co_min = Math.Min( range.Co_min, Co );
range.Co_max = Math.Max( range.Co_max, Co );
range.Y_min = Math.Min( range.Y_min, xyY.z );
range.Y_max = Math.Max( range.Y_max, xyY.z );
range.x_min = Math.Min( range.x_min, xyY.x );
range.x_max = Math.Max( range.x_max, xyY.x );
range.y_min = Math.Min( range.y_min, xyY.y );
range.y_max = Math.Max( range.y_max, xyY.y );
}
}
}
}
}
private void Generate()
{
try {
panelParameters.Enabled = false;
//////////////////////////////////////////////////////////////////////////
// 1] Apply bilateral filtering to the input texture as a pre-process
ApplyBilateralFiltering(m_TextureSource, m_TextureTarget0, floatTrackbarControlBilateralRadius.Value, floatTrackbarControlBilateralTolerance.Value, checkBoxWrap.Checked, BILATERAL_PROGRESS);
//////////////////////////////////////////////////////////////////////////
// 2] Compute directional occlusion
m_TextureTarget1.RemoveFromLastAssignedSlots();
// Prepare computation parameters
m_TextureTarget0.SetCS(0);
m_TextureTarget1.SetCSUAV(0);
m_SB_Rays.SetInput(1);
m_TextureSourceNormal.SetCS(2);
m_CB_Input.m.RaysCount = (UInt32)Math.Min(MAX_THREADS, integerTrackbarControlRaysCount.Value);
m_CB_Input.m.MaxStepsCount = (UInt32)integerTrackbarControlMaxStepsCount.Value;
m_CB_Input.m.Tile = (uint)(checkBoxWrap.Checked ? 1 : 0);
m_CB_Input.m.TexelSize_mm = TextureSize_mm / Math.Max(W, H);
m_CB_Input.m.Displacement_mm = TextureHeight_mm;
// Start
if (!m_CS_GenerateSSBumpMap.Use())
{
throw new Exception("Can't generate self-shadowed bump map as compute shader failed to compile!");
}
int h = Math.Max(1, MAX_LINES * 1024 / W);
int CallsCount = (int)Math.Ceiling((float)H / h);
for (int i = 0; i < CallsCount; i++)
{
m_CB_Input.m.Y0 = (UInt32)(i * h);
m_CB_Input.UpdateData();
m_CS_GenerateSSBumpMap.Dispatch(W, h, 1);
m_Device.Present(true);
progressBar.Value = (int)(0.01f * (BILATERAL_PROGRESS + (100 - BILATERAL_PROGRESS) * (i + 1) / (CallsCount)) * progressBar.Maximum);
// for ( int a=0; a < 10; a++ )
Application.DoEvents();
}
m_TextureTarget1.RemoveFromLastAssignedSlotUAV(); // So we can use it as input for next stage
progressBar.Value = progressBar.Maximum;
// Compute in a single shot (this is madness!)
// m_CB_Input.m.y = 0;
// m_CB_Input.UpdateData();
// m_CS_GenerateSSBumpMap.Dispatch( W, H, 1 );
//////////////////////////////////////////////////////////////////////////
// 3] Copy target to staging for CPU readback and update the resulting bitmap
m_TextureTarget_CPU.CopyFrom(m_TextureTarget1);
ImageUtility.ColorProfile Profile = m_ProfilesRGB; // AO maps are sRGB! (although strange, that's certainly to have more range in dark values)
if (m_BitmapResult != null)
{
m_BitmapResult.Dispose();
}
m_BitmapResult = null;
m_BitmapResult = new ImageUtility.Bitmap(W, H, Profile);
m_BitmapResult.HasAlpha = false;
RendererManaged.PixelsBuffer Pixels = m_TextureTarget_CPU.Map(0, 0);
using (System.IO.BinaryReader R = Pixels.OpenStreamRead())
for (int Y = 0; Y < H; Y++)
{
R.BaseStream.Position = Y * Pixels.RowPitch;
for (int X = 0; X < W; X++)
{
float AO = R.ReadSingle(); // Linear value
ImageUtility.float4 Color = new ImageUtility.float4(AO, AO, AO, AO);
Color = Profile.RGB2XYZ(Color); // Now sRGB value, converted as XYZ
m_BitmapResult.ContentXYZ[X, Y] = Color;
}
}
Pixels.Dispose();
m_TextureTarget_CPU.UnMap(0, 0);
// Assign result
viewportPanelResult.Image = m_BitmapResult;
} catch (Exception _e) {
MessageBox("An error occurred during generation!\r\n\r\nDetails: ", _e);
} finally {
panelParameters.Enabled = true;
}
}
