private void Generate()
{
try {
tabControlGenerators.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);
//////////////////////////////////////////////////////////////////////////
// 2] Compute directional occlusion
m_TextureTarget1.RemoveFromLastAssignedSlots();
// Prepare computation parameters
m_TextureTarget0.SetCS(0);
m_TextureTarget1.SetCSUAV(0);
m_SB_Rays.SetInput(1);
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);
if (m_BitmapResult != null)
{
m_BitmapResult.Dispose();
}
m_BitmapResult = null;
m_BitmapResult = new ImageUtility.Bitmap(W, H, m_LinearProfile);
m_BitmapResult.HasAlpha = true;
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++)
{
ImageUtility.float4 Color = new ImageUtility.float4(R.ReadSingle(), R.ReadSingle(), R.ReadSingle(), R.ReadSingle());
Color = m_LinearProfile.RGB2XYZ(Color);
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 {
tabControlGenerators.Enabled = true;
}
}
private void LoadHeightMap(System.IO.FileInfo _FileName)
{
try
{
tabControlGenerators.Enabled = false;
// Dispose of existing resources
if (m_BitmapSource != null)
{
m_BitmapSource.Dispose();
}
m_BitmapSource = null;
if (m_TextureTarget_CPU != null)
{
m_TextureTarget_CPU.Dispose();
}
m_TextureTarget_CPU = null;
if (m_TextureTarget0 != null)
{
m_TextureTarget0.Dispose();
}
m_TextureTarget0 = null;
if (m_TextureTarget1 != null)
{
m_TextureTarget1.Dispose();
}
m_TextureTarget1 = null;
if (m_TextureSource != null)
{
m_TextureSource.Dispose();
}
m_TextureSource = null;
// Load the source image assuming it's in linear space
m_SourceFileName = _FileName;
m_BitmapSource = new ImageUtility.Bitmap(_FileName, m_LinearProfile);
outputPanelInputHeightMap.Image = m_BitmapSource;
W = m_BitmapSource.Width;
H = m_BitmapSource.Height;
// Build the source texture
RendererManaged.PixelsBuffer SourceHeightMap = new RendererManaged.PixelsBuffer(W * H * 4);
using (System.IO.BinaryWriter Wr = SourceHeightMap.OpenStreamWrite())
for (int Y = 0; Y < H; Y++)
{
for (int X = 0; X < W; X++)
{
Wr.Write(m_BitmapSource.ContentXYZ[X, Y].y);
}
}
m_TextureSource = new RendererManaged.Texture2D(m_Device, W, H, 1, 1, RendererManaged.PIXEL_FORMAT.R32_FLOAT, false, false, new RendererManaged.PixelsBuffer[] { SourceHeightMap });
// Build the target UAV & staging texture for readback
m_TextureTarget0 = new RendererManaged.Texture2D(m_Device, W, H, 1, 1, RendererManaged.PIXEL_FORMAT.R32_FLOAT, false, true, null);
m_TextureTarget1 = new RendererManaged.Texture2D(m_Device, W, H, 1, 1, RendererManaged.PIXEL_FORMAT.RGBA32_FLOAT, false, true, null);
m_TextureTarget_CPU = new RendererManaged.Texture2D(m_Device, W, H, 1, 1, RendererManaged.PIXEL_FORMAT.RGBA32_FLOAT, true, false, null);
tabControlGenerators.Enabled = true;
buttonGenerate.Focus();
}
catch (Exception _e)
{
MessageBox("An error occurred while opening the image:\n\n", _e);
}
}
