internal void RenderPixel(int x, int y, SamplerBase sampler, Scene scene)
{
for (int k = 0; k < sampler.numSamples; k++)
{
var sample = sampler.Sample();
Ray ray = GetRayFromPixel(x + sample.x, y + sample.y);
m_RenderTarget.SetPixel(x, y, scene.tracer.Tracing(ray, scene.sky, sampler));
}
}
protected override IRenderResult OnRenderDebugSinglePixel(int x, int y, RenderConfig config)
{
CameraBase camera = m_Scene.camera;
if (camera == null)
{
throw new System.ArgumentNullException();
}
Texture result = new Texture(config.width, config.height);
result.Fill(Color.black);
var sampler = SamplerFactory.Create(config.samplerType, config.numSamples, config.numSets);
camera.SetRenderTarget(result);
Color col = Color.black;
sampler.ResetSampler(); //重置采样器状态
while (sampler.NextSample())
{
Ray ray = m_Scene.camera.GetRay(x, y, sampler);
col += this.PathTracing(ray, sampler);
}
col /= sampler.numSamples;
col.a = 1.0f;
result.SetPixel(x, y, col);
return(result);
}
//public void SetPixel(int x, int y, Color color)
//{
// int i = x - m_X;
// int j = y - m_Y;
// m_Colors[j * m_TileWidth + i] = color;
//}
//public Color GetPixel(int i, int j)
//{
// return m_Colors[j * m_TileWidth + i];
//}
public bool ApplyToRenderResult(IRenderResult result)
{
Texture texture = result as Texture;
if (texture != null)
{
//for(int i=0;i< m_TileWidth; i++)
//{
// for(int j=0;j< m_TileHeight; j++)
// {
// Color color = m_Colors[j * m_TileWidth + i];
// texture.SetPixel(m_X + i, m_Y + j, color);
// }
//}
texture.SetPixel(m_X, m_Y, m_Color);
return(true);
}
return(false);
}
public static Texture Create(string path)
{
if (!System.IO.File.Exists(path))
{
return(null);
}
var img = new System.Drawing.Bitmap(Image.FromFile(path));
Texture tex = new Texture(img.Width, img.Height);
for (int i = 0; i < img.Width; i++)
{
for (int j = 0; j < img.Height; j++)
{
var c = img.GetPixel(i, j);
Color col = new Color(((float)c.R) / 255.0f, ((float)c.G) / 255.0f, ((float)c.B) / 255.0f,
((float)c.A) / 255.0f);
tex.SetPixel(img.Width - 1 - i, img.Height - 1 - j, col);
}
}
return(tex);
}
public static Texture Create(string path, float gamma)
{
if (!System.IO.File.Exists(path))
{
return(null);
}
if (!FreeImage.IsAvailable())
{
return(null);
}
FIBITMAP dib = new FIBITMAP();
dib = FreeImage.LoadEx(path);
if (dib.IsNull)
{
return(null);
}
var bpp = FreeImage.GetBPP(dib);
if (bpp != 24 && bpp != 32 && bpp != 96 && bpp != 8)
{
FreeImage.UnloadEx(ref dib);
return(null);
}
uint w = FreeImage.GetWidth(dib);
uint h = FreeImage.GetHeight(dib);
Texture tex = new Texture(w, h);
for (int i = 0; i < h; i++)
{
if (bpp == 8)
{
Scanline <Byte> scanline = new Scanline <Byte>(dib, i);
Byte[] data = scanline.Data;
for (int j = 0; j < data.Length; j++)
{
var gray = data[j];
Color color = Color.Color32(gray, gray, gray);
color.Gamma(gamma);
tex.SetPixel(j, i, color);
}
}
else if (bpp == 24)
{
Scanline <RGBTRIPLE> scanline = new Scanline <RGBTRIPLE>(dib, i);
RGBTRIPLE[] data = scanline.Data;
for (int j = 0; j < data.Length; j++)
{
var red = data[j].rgbtRed;
var green = data[j].rgbtGreen;
var blue = data[j].rgbtBlue;
Color color = Color.Color32(red, green, blue);
color.Gamma(gamma);
tex.SetPixel(j, i, color);
}
}
else if (bpp == 32)
{
Scanline <RGBQUAD> scanline = new Scanline <RGBQUAD>(dib, i);
RGBQUAD[] data = scanline.Data;
for (int j = 0; j < data.Length; j++)
{
var red = data[j].rgbRed;
var green = data[j].rgbGreen;
var blue = data[j].rgbBlue;
var alpha = data[j].rgbReserved;
Color color = Color.Color32(red, green, blue, alpha);
color.Gamma(gamma);
tex.SetPixel(j, i, color);
}
}
else if (bpp == 96)
{
Scanline <FIRGBF> scanline = new Scanline <FIRGBF>(dib, i);
FIRGBF[] data = scanline.Data;
for (int j = 0; j < data.Length; j++)
{
var red = data[j].red;
var green = data[j].green;
var blue = data[j].blue;
Color color = new Color(red, green, blue);
tex.SetPixel(j, i, color);
}
}
}
return(tex);
}