protected override void OnDraw(RenderTexture2D dst, RenderTexture2D src)
{
Vector4DF weights1 = new Vector4DF();
Vector4DF weights2 = new Vector4DF();
float[] ws = new float[8];
float total = 0.0f;
float dispersion = intensity * intensity;
for (int i = 0; i < 8; i++)
{
float pos = 1.0f + 2.0f * i;
ws[i] = (float)Math.Exp(-0.5f * pos * pos / dispersion);
total += ws[i] * 2.0f;
}
weights1.X = ws[0] / total;
weights1.Y = ws[1] / total;
weights1.Z = ws[2] / total;
weights1.W = ws[3] / total;
weights2.X = ws[4] / total;
weights2.Y = ws[5] / total;
weights2.Z = ws[6] / total;
weights2.W = ws[7] / total;
var size = src.Size;
var format = src.Format;
if (tempTexture0 == null ||
(!tempTexture0.Size.Equals(Vector2DI.DivideByScalar(size, 2)) ||
tempTexture0.Format != format))
{
if (format == TextureFormat.R32G32B32A32_FLOAT)
{
tempTexture0 = Engine.Graphics.CreateRenderTexture2D(size.X / 2, size.Y / 2, TextureFormat.R32G32B32A32_FLOAT);
tempTexture1 = Engine.Graphics.CreateRenderTexture2D(size.X / 4, size.Y / 4, TextureFormat.R32G32B32A32_FLOAT);
tempTexture2 = Engine.Graphics.CreateRenderTexture2D(size.X / 8, size.Y / 8, TextureFormat.R32G32B32A32_FLOAT);
tempTexture3 = Engine.Graphics.CreateRenderTexture2D(size.X / 16, size.Y / 16, TextureFormat.R32G32B32A32_FLOAT);
downsampledTexture0 = Engine.Graphics.CreateRenderTexture2D(size.X / 2, size.Y / 2, TextureFormat.R32G32B32A32_FLOAT);
downsampledTexture1 = Engine.Graphics.CreateRenderTexture2D(size.X / 4, size.Y / 4, TextureFormat.R32G32B32A32_FLOAT);
downsampledTexture2 = Engine.Graphics.CreateRenderTexture2D(size.X / 8, size.Y / 8, TextureFormat.R32G32B32A32_FLOAT);
downsampledTexture3 = Engine.Graphics.CreateRenderTexture2D(size.X / 16, size.Y / 16, TextureFormat.R32G32B32A32_FLOAT);
}
else
{
tempTexture0 = Engine.Graphics.CreateRenderTexture2D(size.X / 2, size.Y / 2, TextureFormat.R8G8B8A8_UNORM);
tempTexture1 = Engine.Graphics.CreateRenderTexture2D(size.X / 4, size.Y / 4, TextureFormat.R8G8B8A8_UNORM);
tempTexture2 = Engine.Graphics.CreateRenderTexture2D(size.X / 8, size.Y / 8, TextureFormat.R8G8B8A8_UNORM);
tempTexture3 = Engine.Graphics.CreateRenderTexture2D(size.X / 16, size.Y / 16, TextureFormat.R8G8B8A8_UNORM);
downsampledTexture0 = Engine.Graphics.CreateRenderTexture2D(size.X / 2, size.Y / 2, TextureFormat.R8G8B8A8_UNORM);
downsampledTexture1 = Engine.Graphics.CreateRenderTexture2D(size.X / 4, size.Y / 4, TextureFormat.R8G8B8A8_UNORM);
downsampledTexture2 = Engine.Graphics.CreateRenderTexture2D(size.X / 8, size.Y / 8, TextureFormat.R8G8B8A8_UNORM);
downsampledTexture3 = Engine.Graphics.CreateRenderTexture2D(size.X / 16, size.Y / 16, TextureFormat.R8G8B8A8_UNORM);
}
}
downsample.SetTexture2D("g_texture", src);
downsample.SetTextureFilterType("g_texture", TextureFilterType.Linear);
downsample.SetVector2DF("g_offset", new Vector2DF(0.5f / (float)(size.X / 1.0f), 0.5f / (float)(size.Y / 1.0f)));
DrawOnTexture2DWithMaterial(downsampledTexture0, downsample);
downsample.SetTexture2D("g_texture", downsampledTexture0);
downsample.SetTextureFilterType("g_texture", TextureFilterType.Linear);
downsample.SetVector2DF("g_offset", new Vector2DF(0.5f / (float)(size.X / 2.0f), 0.5f / (float)(size.Y / 2.0f)));
DrawOnTexture2DWithMaterial(downsampledTexture1, downsample);
downsample.SetTexture2D("g_texture", downsampledTexture1);
downsample.SetTextureFilterType("g_texture", TextureFilterType.Linear);
downsample.SetVector2DF("g_offset", new Vector2DF(0.5f / (float)(size.X / 4.0f), 0.5f / (float)(size.Y / 4.0f)));
DrawOnTexture2DWithMaterial(downsampledTexture2, downsample);
downsample.SetTexture2D("g_texture", downsampledTexture2);
downsample.SetTextureFilterType("g_texture", TextureFilterType.Linear);
downsample.SetVector2DF("g_offset", new Vector2DF(0.5f / (float)(size.X / 8.0f), 0.5f / (float)(size.Y / 8.0f)));
DrawOnTexture2DWithMaterial(downsampledTexture3, downsample);
Material2D blurX = null;
if (isLuminanceMode)
{
blurX = material2dX_Lum;
}
else
{
blurX = material2dX;
}
// ブラー1
blurX.SetTexture2D("g_blurredTexture", downsampledTexture1);
blurX.SetVector4DF("g_weight1", weights1);
blurX.SetVector4DF("g_weight2", weights2);
blurX.SetFloat("g_threshold", threshold);
blurX.SetFloat("g_exposure", exposure);
blurX.SetTextureFilterType("g_blurredTexture", TextureFilterType.Linear);
DrawOnTexture2DWithMaterial(tempTexture1, blurX);
material2dY.SetTexture2D("g_blurredTexture", tempTexture1);
material2dY.SetVector4DF("g_weight1", weights1);
material2dY.SetVector4DF("g_weight2", weights2);
material2dY.SetTextureFilterType("g_blurredTexture", TextureFilterType.Linear);
DrawOnTexture2DWithMaterial(downsampledTexture1, material2dY);
// ブラー2
blurX.SetTexture2D("g_blurredTexture", downsampledTexture2);
blurX.SetVector4DF("g_weight1", weights1);
blurX.SetVector4DF("g_weight2", weights2);
blurX.SetFloat("g_threshold", threshold);
blurX.SetFloat("g_exposure", exposure);
blurX.SetTextureFilterType("g_blurredTexture", TextureFilterType.Linear);
DrawOnTexture2DWithMaterial(tempTexture2, blurX);
material2dY.SetTexture2D("g_blurredTexture", tempTexture2);
material2dY.SetVector4DF("g_weight1", weights1);
material2dY.SetVector4DF("g_weight2", weights2);
material2dY.SetTextureFilterType("g_blurredTexture", TextureFilterType.Linear);
DrawOnTexture2DWithMaterial(downsampledTexture2, material2dY);
// ブラー3
blurX.SetTexture2D("g_blurredTexture", downsampledTexture3);
blurX.SetVector4DF("g_weight1", weights1);
blurX.SetVector4DF("g_weight2", weights2);
blurX.SetFloat("g_threshold", threshold);
blurX.SetFloat("g_exposure", exposure);
blurX.SetTextureFilterType("g_blurredTexture", TextureFilterType.Linear);
DrawOnTexture2DWithMaterial(tempTexture3, blurX);
material2dY.SetTexture2D("g_blurredTexture", tempTexture3);
material2dY.SetVector4DF("g_weight1", weights1);
material2dY.SetVector4DF("g_weight2", weights2);
material2dY.SetTextureFilterType("g_blurredTexture", TextureFilterType.Linear);
DrawOnTexture2DWithMaterial(downsampledTexture3, material2dY);
// 合計
materialSum.SetTexture2D("g_blurred0Texture", downsampledTexture1);
materialSum.SetTexture2D("g_blurred1Texture", downsampledTexture2);
materialSum.SetTexture2D("g_blurred2Texture", downsampledTexture3);
materialSum.SetTexture2D("g_originalTexture", src);
materialSum.SetTextureFilterType("g_blurred0Texture", TextureFilterType.Linear);
materialSum.SetTextureFilterType("g_blurred1Texture", TextureFilterType.Linear);
materialSum.SetTextureFilterType("g_blurred2Texture", TextureFilterType.Linear);
materialSum.SetTextureFilterType("g_originalTexture", TextureFilterType.Linear);
DrawOnTexture2DWithMaterial(dst, materialSum);
}
