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swiftshader
Commit 1fb633c3 by Ben Clayton
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SpirvShader: Implement GLSLstd450Determinant

Bug: b/126873455 Tests: dEQP-VK.glsl.matrix.determinant.* Change-Id: I81ae56951b9fa2e1aedb327039160cf44f7f0a18 Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/28728Tested-by: 's avatarBen Clayton <bclayton@google.com> Presubmit-Ready: Ben Clayton <bclayton@google.com> Reviewed-by: 's avatarNicolas Capens <nicolascapens@google.com> Reviewed-by: 's avatarChris Forbes <chrisforbes@google.com> Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
parent 4d63312f
Showing with 63 additions and 1 deletion
src/Pipeline/SpirvShader.cpp
......@@ -103,6 +103,44 @@ namespace
((~xIsNan & yIsNan) & As<sw::SIMD::Int>(x)) |
(( xIsNan ) & As<sw::SIMD::Int>(y)));
}
// Returns the determinant of a 2x2 matrix.
rr::RValue<sw::SIMD::Float> Determinant(
rr::RValue<sw::SIMD::Float> const &a, rr::RValue<sw::SIMD::Float> const &b,
rr::RValue<sw::SIMD::Float> const &c, rr::RValue<sw::SIMD::Float> const &d)
{
return a*d - b*c;
}
// Returns the determinant of a 3x3 matrix.
rr::RValue<sw::SIMD::Float> Determinant(
rr::RValue<sw::SIMD::Float> const &a, rr::RValue<sw::SIMD::Float> const &b, rr::RValue<sw::SIMD::Float> const &c,
rr::RValue<sw::SIMD::Float> const &d, rr::RValue<sw::SIMD::Float> const &e, rr::RValue<sw::SIMD::Float> const &f,
rr::RValue<sw::SIMD::Float> const &g, rr::RValue<sw::SIMD::Float> const &h, rr::RValue<sw::SIMD::Float> const &i)
{
return a*e*i + b*f*g + c*d*h - c*e*g - b*d*i - a*f*h;
}
// Returns the determinant of a 4x4 matrix.
rr::RValue<sw::SIMD::Float> Determinant(
rr::RValue<sw::SIMD::Float> const &a, rr::RValue<sw::SIMD::Float> const &b, rr::RValue<sw::SIMD::Float> const &c, rr::RValue<sw::SIMD::Float> const &d,
rr::RValue<sw::SIMD::Float> const &e, rr::RValue<sw::SIMD::Float> const &f, rr::RValue<sw::SIMD::Float> const &g, rr::RValue<sw::SIMD::Float> const &h,
rr::RValue<sw::SIMD::Float> const &i, rr::RValue<sw::SIMD::Float> const &j, rr::RValue<sw::SIMD::Float> const &k, rr::RValue<sw::SIMD::Float> const &l,
rr::RValue<sw::SIMD::Float> const &m, rr::RValue<sw::SIMD::Float> const &n, rr::RValue<sw::SIMD::Float> const &o, rr::RValue<sw::SIMD::Float> const &p)
{
return a * Determinant(f, g, h,
j, k, l,
n, o, p) -
b * Determinant(e, g, h,
i, k, l,
m, o, p) +
c * Determinant(e, f, h,
i, j, l,
m, n, p) -
d * Determinant(e, f, g,
i, j, k,
m, n, o);
}
}
namespace sw
......@@ -3518,7 +3556,31 @@ namespace sw
}
case GLSLstd450Determinant:
{
UNIMPLEMENTED("GLSLstd450Determinant");
auto mat = GenericValue(this, routine, insn.word(5));
auto numComponents = getType(mat.type).sizeInComponents;
switch (numComponents)
{
case 4: // 2x2
dst.move(0, Determinant(
mat.Float(0), mat.Float(1),
mat.Float(2), mat.Float(3)));
break;
case 9: // 3x3
dst.move(0, Determinant(
mat.Float(0), mat.Float(1), mat.Float(2),
mat.Float(3), mat.Float(4), mat.Float(5),
mat.Float(6), mat.Float(7), mat.Float(8)));
break;
case 16: // 4x4
dst.move(0, Determinant(
mat.Float(0), mat.Float(1), mat.Float(2), mat.Float(3),
mat.Float(4), mat.Float(5), mat.Float(6), mat.Float(7),
mat.Float(8), mat.Float(9), mat.Float(10), mat.Float(11),
mat.Float(12), mat.Float(13), mat.Float(14), mat.Float(15)));
break;
default:
UNREACHABLE("GLSLstd450Determinant can only operate with square matrices. Got %d elements", int(numComponents));
}
break;
}
case GLSLstd450MatrixInverse:
......
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