selectMipmap(texture, buffer, mipmap, lod, face, secondLOD);
- bool texelFetch = (function == Fetch);
+ Int4 x0, x1, y0, y1, z0;
+ Float4 fu, fv;
+ Int4 filter = computeFilterOffset(lod);
+ address(w, z0, z0, fv, mipmap, offset.z, filter, OFFSET(Mipmap, depth), state.addressingModeW, function);
+ address(v, y0, y1, fv, mipmap, offset.y, filter, OFFSET(Mipmap, height), state.addressingModeV, function);
+ address(u, x0, x1, fu, mipmap, offset.x, filter, OFFSET(Mipmap, width), state.addressingModeU, function);
- Short4 uuuu = texelFetch ? Short4(As<Int4>(u)) : address(u, state.addressingModeU, mipmap);
- Short4 vvvv = texelFetch ? Short4(As<Int4>(v)) : address(v, state.addressingModeV, mipmap);
- Short4 wwww = texelFetch ? Short4(As<Int4>(w)) : address(w, state.addressingModeW, mipmap);
+ Int4 pitchP = *Pointer<Int4>(mipmap + OFFSET(Mipmap, pitchP), 16);
+ y0 *= pitchP;
+ if(hasThirdCoordinate())
+ {
+ Int4 sliceP = *Pointer<Int4>(mipmap + OFFSET(Mipmap, sliceP), 16);
+ z0 *= sliceP;
+ }
- if(state.textureFilter == FILTER_POINT || texelFetch)
+ if(state.textureFilter == FILTER_POINT || (function == Fetch))
{
- sampleTexel(c, uuuu, vvvv, wwww, offset, w, mipmap, buffer, function);
+ sampleTexel(c, x0, y0, z0, w, mipmap, buffer, function);
}
else
{
Vector4f c2;
Vector4f c3;
- Short4 uuuu0 = offsetSample(uuuu, mipmap, OFFSET(Mipmap,uHalf), state.addressingModeU == ADDRESSING_WRAP, gather ? 0 : -1, lod);
- Short4 vvvv0 = offsetSample(vvvv, mipmap, OFFSET(Mipmap,vHalf), state.addressingModeV == ADDRESSING_WRAP, gather ? 0 : -1, lod);
- Short4 uuuu1 = offsetSample(uuuu, mipmap, OFFSET(Mipmap,uHalf), state.addressingModeU == ADDRESSING_WRAP, gather ? 2 : +1, lod);
- Short4 vvvv1 = offsetSample(vvvv, mipmap, OFFSET(Mipmap,vHalf), state.addressingModeV == ADDRESSING_WRAP, gather ? 2 : +1, lod);
+ y1 *= pitchP;
- sampleTexel(c0, uuuu0, vvvv0, wwww, offset, w, mipmap, buffer, function);
- sampleTexel(c1, uuuu1, vvvv0, wwww, offset, w, mipmap, buffer, function);
- sampleTexel(c2, uuuu0, vvvv1, wwww, offset, w, mipmap, buffer, function);
- sampleTexel(c3, uuuu1, vvvv1, wwww, offset, w, mipmap, buffer, function);
+ sampleTexel(c0, x0, y0, z0, w, mipmap, buffer, function);
+ sampleTexel(c1, x1, y0, z0, w, mipmap, buffer, function);
+ sampleTexel(c2, x0, y1, z0, w, mipmap, buffer, function);
+ sampleTexel(c3, x1, y1, z0, w, mipmap, buffer, function);
if(!gather) // Blend
{
- // Fractions
- Float4 fu = Frac(Float4(As<UShort4>(uuuu0)) * *Pointer<Float4>(mipmap + OFFSET(Mipmap,fWidth)));
- Float4 fv = Frac(Float4(As<UShort4>(vvvv0)) * *Pointer<Float4>(mipmap + OFFSET(Mipmap,fHeight)));
-
if(componentCount >= 1) c0.x = c0.x + fu * (c1.x - c0.x);
if(componentCount >= 2) c0.y = c0.y + fu * (c1.y - c0.y);
if(componentCount >= 3) c0.z = c0.z + fu * (c1.z - c0.z);
selectMipmap(texture, buffer, mipmap, lod, face, secondLOD);
- bool texelFetch = (function == Fetch);
+ Int4 x0, x1, y0, y1, z0, z1;
+ Float4 fu, fv, fw;
+ Int4 filter = computeFilterOffset(lod);
+ address(u, x0, x1, fu, mipmap, offset.x, filter, OFFSET(Mipmap, width), state.addressingModeU, function);
+ address(v, y0, y1, fv, mipmap, offset.y, filter, OFFSET(Mipmap, height), state.addressingModeV, function);
+ address(w, z0, z1, fw, mipmap, offset.z, filter, OFFSET(Mipmap, depth), state.addressingModeW, function);
- Short4 uuuu = texelFetch ? Short4(As<Int4>(u)) : address(u, state.addressingModeU, mipmap);
- Short4 vvvv = texelFetch ? Short4(As<Int4>(v)) : address(v, state.addressingModeV, mipmap);
- Short4 wwww = texelFetch ? Short4(As<Int4>(w)) : address(w, state.addressingModeW, mipmap);
+ Int4 pitchP = *Pointer<Int4>(mipmap + OFFSET(Mipmap, pitchP), 16);
+ Int4 sliceP = *Pointer<Int4>(mipmap + OFFSET(Mipmap, sliceP), 16);
+ y0 *= pitchP;
+ z0 *= sliceP;
- if(state.textureFilter == FILTER_POINT || texelFetch)
+ if(state.textureFilter == FILTER_POINT || (function == Fetch))
{
- sampleTexel(c, uuuu, vvvv, wwww, offset, w, mipmap, buffer, function);
+ sampleTexel(c, x0, y0, z0, w, mipmap, buffer, function);
}
else
{
Vector4f c6;
Vector4f c7;
- Short4 uuuu0 = offsetSample(uuuu, mipmap, OFFSET(Mipmap,uHalf), state.addressingModeU == ADDRESSING_WRAP, -1, lod);
- Short4 vvvv0 = offsetSample(vvvv, mipmap, OFFSET(Mipmap,vHalf), state.addressingModeV == ADDRESSING_WRAP, -1, lod);
- Short4 wwww0 = offsetSample(wwww, mipmap, OFFSET(Mipmap,wHalf), state.addressingModeW == ADDRESSING_WRAP, -1, lod);
- Short4 uuuu1 = offsetSample(uuuu, mipmap, OFFSET(Mipmap,uHalf), state.addressingModeU == ADDRESSING_WRAP, +1, lod);
- Short4 vvvv1 = offsetSample(vvvv, mipmap, OFFSET(Mipmap,vHalf), state.addressingModeV == ADDRESSING_WRAP, +1, lod);
- Short4 wwww1 = offsetSample(wwww, mipmap, OFFSET(Mipmap,wHalf), state.addressingModeW == ADDRESSING_WRAP, +1, lod);
-
- sampleTexel(c0, uuuu0, vvvv0, wwww0, offset, w, mipmap, buffer, function);
- sampleTexel(c1, uuuu1, vvvv0, wwww0, offset, w, mipmap, buffer, function);
- sampleTexel(c2, uuuu0, vvvv1, wwww0, offset, w, mipmap, buffer, function);
- sampleTexel(c3, uuuu1, vvvv1, wwww0, offset, w, mipmap, buffer, function);
- sampleTexel(c4, uuuu0, vvvv0, wwww1, offset, w, mipmap, buffer, function);
- sampleTexel(c5, uuuu1, vvvv0, wwww1, offset, w, mipmap, buffer, function);
- sampleTexel(c6, uuuu0, vvvv1, wwww1, offset, w, mipmap, buffer, function);
- sampleTexel(c7, uuuu1, vvvv1, wwww1, offset, w, mipmap, buffer, function);
+ y1 *= pitchP;
+ z1 *= sliceP;
- // Fractions
- Float4 fu = Frac(Float4(As<UShort4>(uuuu0)) * *Pointer<Float4>(mipmap + OFFSET(Mipmap,fWidth)));
- Float4 fv = Frac(Float4(As<UShort4>(vvvv0)) * *Pointer<Float4>(mipmap + OFFSET(Mipmap,fHeight)));
- Float4 fw = Frac(Float4(As<UShort4>(wwww0)) * *Pointer<Float4>(mipmap + OFFSET(Mipmap,fDepth)));
+ sampleTexel(c0, x0, y0, z0, w, mipmap, buffer, function);
+ sampleTexel(c1, x1, y0, z0, w, mipmap, buffer, function);
+ sampleTexel(c2, x0, y1, z0, w, mipmap, buffer, function);
+ sampleTexel(c3, x1, y1, z0, w, mipmap, buffer, function);
+ sampleTexel(c4, x0, y0, z1, w, mipmap, buffer, function);
+ sampleTexel(c5, x1, y0, z1, w, mipmap, buffer, function);
+ sampleTexel(c6, x0, y1, z1, w, mipmap, buffer, function);
+ sampleTexel(c7, x1, y1, z1, w, mipmap, buffer, function);
// Blend first slice
if(componentCount >= 1) c0.x = c0.x + fu * (c1.x - c0.x);
uuuu = As<Short4>(MulAdd(uuuu, *Pointer<Short4>(mipmap + OFFSET(Mipmap,onePitchP))));
uuu2 = As<Short4>(MulAdd(uuu2, *Pointer<Short4>(mipmap + OFFSET(Mipmap,onePitchP))));
- if((state.textureType == TEXTURE_3D) || (state.textureType == TEXTURE_2D_ARRAY))
+ if(hasThirdCoordinate())
{
if(state.textureType != TEXTURE_2D_ARRAY)
{
if(texelFetch)
{
Int size = Int(*Pointer<Int>(mipmap + OFFSET(Mipmap, sliceP)));
- if((state.textureType == TEXTURE_3D) || (state.textureType == TEXTURE_2D_ARRAY))
+ if(hasThirdCoordinate())
{
size *= Int(*Pointer<Short>(mipmap + OFFSET(Mipmap, depth)));
}
}
}
+ void SamplerCore::computeIndices(UInt index[4], Int4& uuuu, Int4& vvvv, Int4& wwww, const Pointer<Byte> &mipmap, SamplerFunction function)
+ {
+ UInt4 indices = uuuu + vvvv;
+
+ if(hasThirdCoordinate())
+ {
+ indices += As<UInt4>(wwww);
+ }
+
+ for(int i = 0; i < 4; i++)
+ {
+ index[i] = Extract(As<Int4>(indices), i);
+ }
+ }
+
void SamplerCore::sampleTexel(Vector4s &c, UInt index[4], Pointer<Byte> buffer[4])
{
int f0 = state.textureType == TEXTURE_CUBE ? 0 : 0;
}
}
- void SamplerCore::sampleTexel(Vector4f &c, Short4 &uuuu, Short4 &vvvv, Short4 &wwww, Vector4f &offset, Float4 &z, Pointer<Byte> &mipmap, Pointer<Byte> buffer[4], SamplerFunction function)
+ void SamplerCore::sampleTexel(Vector4f &c, Int4 &uuuu, Int4 &vvvv, Int4 &wwww, Float4 &z, Pointer<Byte> &mipmap, Pointer<Byte> buffer[4], SamplerFunction function)
{
UInt index[4];
- computeIndices(index, uuuu, vvvv, wwww, offset, mipmap, function);
+ computeIndices(index, uuuu, vvvv, wwww, mipmap, function);
if(hasFloatTexture())
{
}
}
+ Int4 SamplerCore::computeFilterOffset(Float &lod)
+ {
+ Int4 filtering((state.textureFilter == FILTER_POINT) ? 0 : 1);
+ if(state.textureFilter == FILTER_MIN_LINEAR_MAG_POINT)
+ {
+ filtering &= CmpNLE(Float4(lod), Float4(0.0f));
+ }
+ else if(state.textureFilter == FILTER_MIN_POINT_MAG_LINEAR)
+ {
+ filtering &= CmpLE(Float4(lod), Float4(0.0f));
+ }
+
+ return filtering;
+ }
+
Short4 SamplerCore::address(Float4 &uw, AddressingMode addressingMode, Pointer<Byte>& mipmap)
{
if(addressingMode == ADDRESSING_LAYER && state.textureType != TEXTURE_2D_ARRAY)
}
}
+ void SamplerCore::address(Float4 &uvw, Int4& xyz0, Int4& xyz1, Float4& f, Pointer<Byte>& mipmap, Float4 &texOffset, Int4 &filter, int whd, AddressingMode addressingMode, SamplerFunction function)
+ {
+ if(addressingMode == ADDRESSING_LAYER && state.textureType != TEXTURE_2D_ARRAY)
+ {
+ return; // Unused
+ }
+
+ Int4 dim = Int4(*Pointer<Short4>(mipmap + whd, 16));
+ Int4 maxXYZ = dim - Int4(1);
+
+ if(function == Fetch)
+ {
+ xyz0 = Min(Max(((function.option == Offset) && (addressingMode != ADDRESSING_LAYER)) ? As<Int4>(uvw) + As<Int4>(texOffset) : As<Int4>(uvw), Int4(0)), maxXYZ);
+ }
+ else if(addressingMode == ADDRESSING_LAYER && state.textureType == TEXTURE_2D_ARRAY) // Note: Offset does not apply to array layers
+ {
+ xyz0 = Min(Max(RoundInt(uvw), Int4(0)), maxXYZ);
+ }
+ else
+ {
+ const int halfBits = 0x3effffff; // Value just under 0.5f
+ const int oneBits = 0x3f7fffff; // Value just under 1.0f
+ const int twoBits = 0x3fffffff; // Value just under 2.0f
+
+ Float4 coord = Float4(dim);
+ switch(addressingMode)
+ {
+ case ADDRESSING_CLAMP:
+ {
+ Float4 one = As<Float4>(Int4(oneBits));
+ coord *= Min(Max(uvw, Float4(0.0f)), one);
+ }
+ break;
+ case ADDRESSING_MIRROR:
+ {
+ Float4 half = As<Float4>(Int4(halfBits));
+ Float4 one = As<Float4>(Int4(oneBits));
+ Float4 two = As<Float4>(Int4(twoBits));
+ coord *= one - Abs(two * Frac(uvw * half) - one);
+ }
+ break;
+ case ADDRESSING_MIRRORONCE:
+ {
+ Float4 half = As<Float4>(Int4(halfBits));
+ Float4 one = As<Float4>(Int4(oneBits));
+ Float4 two = As<Float4>(Int4(twoBits));
+ coord *= one - Abs(two * Frac(Min(Max(uvw, -one), two) * half) - one);
+ }
+ break;
+ default: // Wrap (or border)
+ coord *= Frac(uvw);
+ break;
+ }
+
+ xyz0 = Int4(coord);
+
+ if(function.option == Offset)
+ {
+ xyz0 += As<Int4>(texOffset);
+ switch(addressingMode)
+ {
+ case ADDRESSING_MIRROR:
+ case ADDRESSING_MIRRORONCE:
+ case ADDRESSING_BORDER:
+ // FIXME: Implement ADDRESSING_MIRROR, ADDRESSING_MIRRORONCE and ADDRESSING_BORDER. Fall through to Clamp.
+ case ADDRESSING_CLAMP:
+ xyz0 = Min(Max(xyz0, Int4(0)), maxXYZ);
+ break;
+ default: // Wrap
+ xyz0 = (xyz0 + dim * Int4(-MIN_PROGRAM_TEXEL_OFFSET)) % dim;
+ break;
+ }
+ }
+
+ if(state.textureFilter != FILTER_POINT) // Compute 2nd coordinate, if needed
+ {
+ bool gather = state.textureFilter == FILTER_GATHER;
+
+ xyz1 = xyz0 + filter; // Increment
+
+ if(!gather)
+ {
+ Float4 frac = Frac(coord);
+ f = Abs(frac - Float4(0.5f));
+ xyz1 -= CmpLT(frac, Float4(0.5f)) & (filter + filter); // Decrement xyz if necessary
+ }
+
+ switch(addressingMode)
+ {
+ case ADDRESSING_MIRROR:
+ case ADDRESSING_MIRRORONCE:
+ case ADDRESSING_BORDER:
+ // FIXME: Implement ADDRESSING_MIRROR, ADDRESSING_MIRRORONCE and ADDRESSING_BORDER. Fall through to Clamp.
+ case ADDRESSING_CLAMP:
+ xyz1 = gather ? Min(xyz1, maxXYZ) : Min(Max(xyz1, Int4(0)), maxXYZ);
+ break;
+ default: // Wrap
+ {
+ // The coordinates overflow or underflow by at most 1
+ Int4 over = CmpNLT(xyz1, dim);
+ xyz1 = (over & Int4(0)) | (~over & xyz1); // xyz >= dim ? 0 : xyz
+ if(!gather)
+ {
+ Int4 under = CmpLT(xyz1, Int4(0));
+ xyz1 = (under & maxXYZ) | (~under & xyz1); // xyz < 0 ? dim - 1 : xyz
+ }
+ }
+ break;
+ }
+ }
+ }
+ }
+
void SamplerCore::convertFixed12(Short4 &cs, Float4 &cf)
{
cs = RoundShort4(cf * Float4(0x1000));
return Surface::componentCount(state.textureFormat);
}
+ bool SamplerCore::hasThirdCoordinate() const
+ {
+ return (state.textureType == TEXTURE_3D) || (state.textureType == TEXTURE_2D_ARRAY);
+ }
+
bool SamplerCore::has16bitTextureFormat() const
{
switch(state.textureFormat)
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