protected override Number4 GetLinear(
SamplerState samplerState, ITextureMipMap mipMap,
ref Number4 texCoords)
{
int intTexelX = (int) texCoords.Float0;
int intTexelY = (int) texCoords.Float1;
float fracX = texCoords.Float0 - intTexelX;
float fracY = texCoords.Float1 - intTexelY;
texCoords.Int0 = intTexelX;
texCoords.Int1 = intTexelY;
var c00 = GetColor(samplerState, mipMap, ref texCoords);
texCoords.Int0 = intTexelX + 1;
texCoords.Int1 = intTexelY;
var c10 = GetColor(samplerState, mipMap, ref texCoords);
texCoords.Int0 = intTexelX;
texCoords.Int1 = intTexelY + 1;
var c01 = GetColor(samplerState, mipMap, ref texCoords);
texCoords.Int0 = intTexelX + 1;
texCoords.Int1 = intTexelY + 1;
var c11 = GetColor(samplerState, mipMap, ref texCoords);
var cMinV = Number4.Lerp(ref c00, ref c10, fracX);
var cMaxV = Number4.Lerp(ref c01, ref c11, fracX);
return Number4.Lerp(ref cMinV, ref cMaxV, fracY);
}
protected override Number4 GetLinear(
SamplerState samplerState, ITextureMipMap mipMap,
ref Number4 texCoords)
{
int intTexelX = (int)texCoords.Float0;
int intTexelY = (int)texCoords.Float1;
float fracX = texCoords.Float0 - intTexelX;
float fracY = texCoords.Float1 - intTexelY;
texCoords.Int0 = intTexelX;
texCoords.Int1 = intTexelY;
var c00 = GetColor(samplerState, mipMap, ref texCoords);
texCoords.Int0 = intTexelX + 1;
texCoords.Int1 = intTexelY;
var c10 = GetColor(samplerState, mipMap, ref texCoords);
texCoords.Int0 = intTexelX;
texCoords.Int1 = intTexelY + 1;
var c01 = GetColor(samplerState, mipMap, ref texCoords);
texCoords.Int0 = intTexelX + 1;
texCoords.Int1 = intTexelY + 1;
var c11 = GetColor(samplerState, mipMap, ref texCoords);
var cMinV = Number4.Lerp(ref c00, ref c10, fracX);
var cMaxV = Number4.Lerp(ref c01, ref c11, fracX);
return(Number4.Lerp(ref cMinV, ref cMaxV, fracY));
}
protected override Number4 GetNearestNeighbor(
SamplerState samplerState, ITextureMipMap mipMap,
ref Number4 texCoords)
{
texCoords.Int0 = MathUtility.Floor(texCoords.Float0);
texCoords.Int1 = MathUtility.Floor(texCoords.Float1);
return GetColor(samplerState, mipMap, ref texCoords);
}
protected override Number4 GetNearestNeighbor(
SamplerState samplerState, ITextureMipMap mipMap,
ref Number4 texCoords)
{
texCoords.Int0 = MathUtility.Floor(texCoords.Float0);
texCoords.Int1 = MathUtility.Floor(texCoords.Float1);
return(GetColor(samplerState, mipMap, ref texCoords));
}
private static Number4 GetColor(SamplerState samplerState, ITextureMipMap mipMap, ref Number4 texCoords)
{
if (!GetTextureAddress(texCoords.Int0, mipMap.Width, samplerState.AddressU, out texCoords.Int0))
return samplerState.BorderColor;
if (!GetTextureAddress(texCoords.Int1, mipMap.Height, samplerState.AddressV, out texCoords.Int1))
return samplerState.BorderColor;
return mipMap.GetData(ref texCoords);
}
protected override void GetMipMapAndTransformedCoordinates(
ITexture texture, ref Number4 location,
int level, out ITextureMipMap mipMap,
out Number4 textureCoordinates)
{
mipMap = texture.GetMipMap(0, level);
textureCoordinates = new Number4(
location.Float0 * mipMap.Width,
location.Float1 * mipMap.Height,
0, 0);
}
protected override void GetMipMapAndTransformedCoordinates(
ITexture texture, ref Number4 location,
int level, out ITextureMipMap mipMap,
out Number4 textureCoordinates)
{
mipMap = texture.GetMipMap(0, level);
textureCoordinates = new Number4(
location.Float0 * mipMap.Width,
location.Float1 * mipMap.Height,
0, 0);
}
protected override void GetMipMapAndTransformedCoordinates(
ITexture texture, ref Number4 location,
int level, out ITextureMipMap mipMap,
out Number4 textureCoordinates)
{
var arraySlice = MathUtility.Round(location.Float2);
mipMap = texture.GetMipMap(arraySlice, level);
textureCoordinates = new Number4(
location.Float0 * mipMap.Width,
location.Float1 * mipMap.Height,
0, 0);
}
private static Number4 GetColor(SamplerState samplerState, ITextureMipMap mipMap, ref Number4 texCoords)
{
if (!GetTextureAddress(texCoords.Int0, mipMap.Width, samplerState.AddressU, out texCoords.Int0))
{
return(samplerState.BorderColor);
}
if (!GetTextureAddress(texCoords.Int1, mipMap.Height, samplerState.AddressV, out texCoords.Int1))
{
return(samplerState.BorderColor);
}
return(mipMap.GetData(ref texCoords));
}
protected override void GetMipMapAndTransformedCoordinates(
ITexture texture, ref Number4 location,
int level, out ITextureMipMap mipMap,
out Number4 textureCoordinates)
{
var arraySlice = MathUtility.Round(location.Float2);
mipMap = texture.GetMipMap(arraySlice, level);
textureCoordinates = new Number4(
location.Float0 * mipMap.Width,
location.Float1 * mipMap.Height,
0, 0);
}
protected override void GetMipMapAndTransformedCoordinates(
ITexture texture, ref Number4 location,
int level, out ITextureMipMap mipMap,
out Number4 textureCoordinates)
{
int arrayIndex;
CubeMapUtility.GetCubeMapCoordinates(ref location,
out arrayIndex, out textureCoordinates);
mipMap = texture.GetMipMap(arrayIndex, level);
textureCoordinates.X *= mipMap.Width;
textureCoordinates.Y *= mipMap.Height;
}
protected override void GetMipMapAndTransformedCoordinates(
ITexture texture, ref Number4 location,
int level, out ITextureMipMap mipMap,
out Number4 textureCoordinates)
{
int arrayIndex;
CubeMapUtility.GetCubeMapCoordinates(ref location,
out arrayIndex, out textureCoordinates);
mipMap = texture.GetMipMap(arrayIndex, level);
textureCoordinates.X *= mipMap.Width;
textureCoordinates.Y *= mipMap.Height;
}
protected abstract Number4 GetLinear(
SamplerState samplerState, ITextureMipMap mipMap,
ref Number4 texCoords);
protected abstract void GetMipMapAndTransformedCoordinates(
ITexture texture, ref Number4 location, int level,
out ITextureMipMap mipMap,
out Number4 textureCoordinates);
protected abstract Number4 GetNearestNeighbor(
SamplerState samplerState, ITextureMipMap mipMap,
ref Number4 texCoords);
protected abstract void GetMipMapAndTransformedCoordinates(
ITexture texture, ref Number4 location, int level,
out ITextureMipMap mipMap,
out Number4 textureCoordinates);
protected abstract Number4 GetLinear(
SamplerState samplerState, ITextureMipMap mipMap,
ref Number4 texCoords);
protected abstract Number4 GetNearestNeighbor(
SamplerState samplerState, ITextureMipMap mipMap,
ref Number4 texCoords);
