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Commit 5de90b24 by Alexis Hetu Committed by Alexis Hétu
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Added support for most formats to FP sampleTexel

This change is effectively noop by itself, but allows the floating point path to read all texture formats (except YUV). This is required by the floating point path to be able to perform higher precision filtering on all formats (except YUV). Bug swiftshader:76 Change-Id: I5d0d24c00357b4b77cca2ca8a65d082db7635b40 Reviewed-on: https://swiftshader-review.googlesource.com/10668Reviewed-by: 's avatarAlexis Hétu <sugoi@google.com> Reviewed-by: 's avatarNicolas Capens <nicolascapens@google.com> Tested-by: 's avatarAlexis Hétu <sugoi@google.com> Tested-by: 's avatarNicolas Capens <nicolascapens@google.com>
parent b7cab413
Showing with 100 additions and 53 deletions
src/Shader/SamplerCore.cpp
......@@ -1744,12 +1744,8 @@ namespace sw
}
}
void SamplerCore::sampleTexel(Vector4s &c, Short4 &uuuu, Short4 &vvvv, Short4 &wwww, Vector4f &offset, Pointer<Byte> &mipmap, Pointer<Byte> buffer[4], SamplerFunction function)
void SamplerCore::sampleTexel(Vector4s &c, UInt index[4], Pointer<Byte> buffer[4])
{
UInt index[4];
computeIndices(index, uuuu, vvvv, wwww, offset, mipmap, function);
int f0 = state.textureType == TEXTURE_CUBE ? 0 : 0;
int f1 = state.textureType == TEXTURE_CUBE ? 1 : 0;
int f2 = state.textureType == TEXTURE_CUBE ? 2 : 0;
......@@ -1924,7 +1920,16 @@ namespace sw
ASSERT(false);
}
}
else if(hasYuvFormat())
else ASSERT(false);
}
void SamplerCore::sampleTexel(Vector4s &c, Short4 &uuuu, Short4 &vvvv, Short4 &wwww, Vector4f &offset, Pointer<Byte> &mipmap, Pointer<Byte> buffer[4], SamplerFunction function)
{
UInt index[4];
computeIndices(index, uuuu, vvvv, wwww, offset, mipmap, function);
if(hasYuvFormat())
{
// Generic YPbPr to RGB transformation
// R = Y + 2 * (1 - Kr) * Pr
......@@ -2018,7 +2023,10 @@ namespace sw
c.y = Min(g, UShort4(0x3FFF)) << 2;
c.z = Min(b, UShort4(0x3FFF)) << 2;
}
else ASSERT(false);
else
{
sampleTexel(c, index, buffer);
}
}
void SamplerCore::sampleTexel(Vector4f &c, Short4 &uuuu, Short4 &vvvv, Short4 &wwww, Vector4f &offset, Float4 &z, Pointer<Byte> &mipmap, Pointer<Byte> buffer[4], SamplerFunction function)
......@@ -2027,56 +2035,94 @@ namespace sw
computeIndices(index, uuuu, vvvv, wwww, offset, mipmap, function);
int f0 = state.textureType == TEXTURE_CUBE ? 0 : 0;
int f1 = state.textureType == TEXTURE_CUBE ? 1 : 0;
int f2 = state.textureType == TEXTURE_CUBE ? 2 : 0;
int f3 = state.textureType == TEXTURE_CUBE ? 3 : 0;
// Read texels
switch(textureComponentCount())
if(hasFloatTexture())
{
case 4:
c.x = *Pointer<Float4>(buffer[f0] + index[0] * 16, 16);
c.y = *Pointer<Float4>(buffer[f1] + index[1] * 16, 16);
c.z = *Pointer<Float4>(buffer[f2] + index[2] * 16, 16);
c.w = *Pointer<Float4>(buffer[f3] + index[3] * 16, 16);
transpose4x4(c.x, c.y, c.z, c.w);
break;
case 3:
ASSERT(state.textureFormat == FORMAT_X32B32G32R32F);
c.x = *Pointer<Float4>(buffer[f0] + index[0] * 16, 16);
c.y = *Pointer<Float4>(buffer[f1] + index[1] * 16, 16);
c.z = *Pointer<Float4>(buffer[f2] + index[2] * 16, 16);
c.w = *Pointer<Float4>(buffer[f3] + index[3] * 16, 16);
transpose4x3(c.x, c.y, c.z, c.w);
c.w = Float4(1.0f);
break;
case 2:
// FIXME: Optimal shuffling?
c.x.xy = *Pointer<Float4>(buffer[f0] + index[0] * 8);
c.x.zw = *Pointer<Float4>(buffer[f1] + index[1] * 8 - 8);
c.z.xy = *Pointer<Float4>(buffer[f2] + index[2] * 8);
c.z.zw = *Pointer<Float4>(buffer[f3] + index[3] * 8 - 8);
c.y = c.x;
c.x = Float4(c.x.xz, c.z.xz);
c.y = Float4(c.y.yw, c.z.yw);
break;
case 1:
// FIXME: Optimal shuffling?
c.x.x = *Pointer<Float>(buffer[f0] + index[0] * 4);
c.x.y = *Pointer<Float>(buffer[f1] + index[1] * 4);
c.x.z = *Pointer<Float>(buffer[f2] + index[2] * 4);
c.x.w = *Pointer<Float>(buffer[f3] + index[3] * 4);
if(state.textureFormat == FORMAT_D32FS8_SHADOW && state.textureFilter != FILTER_GATHER)
int f0 = state.textureType == TEXTURE_CUBE ? 0 : 0;
int f1 = state.textureType == TEXTURE_CUBE ? 1 : 0;
int f2 = state.textureType == TEXTURE_CUBE ? 2 : 0;
int f3 = state.textureType == TEXTURE_CUBE ? 3 : 0;
// Read texels
switch(textureComponentCount())
{
Float4 d = Min(Max(z, Float4(0.0f)), Float4(1.0f));
case 4:
c.x = *Pointer<Float4>(buffer[f0] + index[0] * 16, 16);
c.y = *Pointer<Float4>(buffer[f1] + index[1] * 16, 16);
c.z = *Pointer<Float4>(buffer[f2] + index[2] * 16, 16);
c.w = *Pointer<Float4>(buffer[f3] + index[3] * 16, 16);
transpose4x4(c.x, c.y, c.z, c.w);
break;
case 3:
ASSERT(state.textureFormat == FORMAT_X32B32G32R32F);
c.x = *Pointer<Float4>(buffer[f0] + index[0] * 16, 16);
c.y = *Pointer<Float4>(buffer[f1] + index[1] * 16, 16);
c.z = *Pointer<Float4>(buffer[f2] + index[2] * 16, 16);
c.w = *Pointer<Float4>(buffer[f3] + index[3] * 16, 16);
transpose4x3(c.x, c.y, c.z, c.w);
c.w = Float4(1.0f);
break;
case 2:
// FIXME: Optimal shuffling?
c.x.xy = *Pointer<Float4>(buffer[f0] + index[0] * 8);
c.x.zw = *Pointer<Float4>(buffer[f1] + index[1] * 8 - 8);
c.z.xy = *Pointer<Float4>(buffer[f2] + index[2] * 8);
c.z.zw = *Pointer<Float4>(buffer[f3] + index[3] * 8 - 8);
c.y = c.x;
c.x = Float4(c.x.xz, c.z.xz);
c.y = Float4(c.y.yw, c.z.yw);
break;
case 1:
// FIXME: Optimal shuffling?
c.x.x = *Pointer<Float>(buffer[f0] + index[0] * 4);
c.x.y = *Pointer<Float>(buffer[f1] + index[1] * 4);
c.x.z = *Pointer<Float>(buffer[f2] + index[2] * 4);
c.x.w = *Pointer<Float>(buffer[f3] + index[3] * 4);
if(state.textureFormat == FORMAT_D32FS8_SHADOW && state.textureFilter != FILTER_GATHER)
{
Float4 d = Min(Max(z, Float4(0.0f)), Float4(1.0f));
c.x = As<Float4>(As<Int4>(CmpNLT(c.x, d)) & As<Int4>(Float4(1.0f))); // FIXME: Only less-equal?
c.x = As<Float4>(As<Int4>(CmpNLT(c.x, d)) & As<Int4>(Float4(1.0f))); // FIXME: Only less-equal?
}
break;
default:
ASSERT(false);
}
}
else
{
ASSERT(!hasYuvFormat());
Vector4s cs;
sampleTexel(cs, index, buffer);
bool isInteger = Surface::isNonNormalizedInteger(state.textureFormat);
int componentCount = textureComponentCount();
for(int n = 0; n < componentCount; ++n)
{
if(hasUnsignedTextureComponent(n))
{
if(isInteger)
{
c[n] = As<Float4>(Int4(As<UShort4>(cs[n])));
}
else
{
c[n] = Float4(As<UShort4>(cs[n]));
}
}
else
{
if(isInteger)
{
c[n] = As<Float4>(Int4(cs[n]));
}
else
{
c[n] = Float4(cs[n]);
}
}
}
break;
default:
ASSERT(false);
}
}
......
src/Shader/SamplerCore.hpp
......@@ -76,6 +76,7 @@ namespace sw
Short4 applyOffset(Short4 &uvw, Float4 &offset, const Int4 &whd, AddressingMode mode);
void computeIndices(UInt index[4], Short4 uuuu, Short4 vvvv, Short4 wwww, Vector4f &offset, const Pointer<Byte> &mipmap, SamplerFunction function);
void sampleTexel(Vector4s &c, Short4 &u, Short4 &v, Short4 &s, Vector4f &offset, Pointer<Byte> &mipmap, Pointer<Byte> buffer[4], SamplerFunction function);
void sampleTexel(Vector4s &c, UInt index[4], Pointer<Byte> buffer[4]);
void sampleTexel(Vector4f &c, Short4 &u, Short4 &v, Short4 &s, Vector4f &offset, Float4 &z, Pointer<Byte> &mipmap, Pointer<Byte> buffer[4], SamplerFunction function);
void selectMipmap(Pointer<Byte> &texture, Pointer<Byte> buffer[4], Pointer<Byte> &mipmap, Float &lod, Int face[4], bool secondLOD);
Short4 address(Float4 &uw, AddressingMode addressingMode, Pointer<Byte>& mipmap);
......
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