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shader: interpolate f16 parameter halves (V_INTERP_P1LL_F16, V_INTERP_P2_F16) (#1792)

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shader: interpolate packed f16 attributes for v_interp_p1ll_f16 and v_interp_p2_f16

Co-authored-by: nmzik <Nmzik@mail.ru>
This commit is contained in:
Nawid3333
2026-10-22 04:54:10 +02:00
committed by GitHub
parent 8502d8a77d
commit d7c1896647
10 changed files with 181 additions and 75 deletions
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tests/shaderCfgTests.cpp
+45
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@@ -6832,6 +6832,50 @@ void TestCustomVintrpMovTranslation() {
CheckSpirvBinaryValidates(mixed_linear_result.spirv);
}
void TestVop3F16InterpolationTranslation() {
// v_interp_p1ll_f16 v21, v0, attr0.w high; v_interp_p2_f16 v14, v1, attr0.w, v21 high
// v_interp_p1ll_f16 v15, v0, attr0.z; v_interp_p2_f16 v14, v1, attr0.z, v15 (op_sel[3])
const uint32_t shader[] = {
EncodeVop3Word0(0x342, 21), EncodeVop3Word1(0x1c0, 256 + 0, 0),
EncodeVop3Word0(0x35a, 14), EncodeVop3Word1(0x1c0, 256 + 1, 256 + 21),
EncodeVop3Word0(0x342, 15), EncodeVop3Word1(0x080, 256 + 0, 0),
EncodeVop3Word0(0x35a, 14, 8), EncodeVop3Word1(0x080, 256 + 1, 256 + 15),
EncodeExp0(0x00, 0x1), EncodeExp1(14, 0, 0, 0),
0xbf810000u,
};
ShaderPixelInputInfo ps_info{};
ps_info.input_num = 1;
SetIdentityInterpolatorSettings(&ps_info);
auto options = MakeCompileOptions(ShaderType::Pixel);
options.input_info.pixel = &ps_info;
options.dump_ir = true;
auto result = RecompileForTest(shader, options);
Check(result.ir_dump.find("GetAttributeF16 0x00000000, 0x00000003, 0x00000001") !=
std::string::npos,
"v_interp_p2_f16 did not read the high f16 of attr0.w");
Check(result.ir_dump.find("GetAttributeF16 0x00000000, 0x00000002, 0x00000000") !=
std::string::npos,
"v_interp_p2_f16 did not read the low f16 of attr0.z");
Check(result.decoded_dump.find("v14.sdwa(sel=5") != std::string::npos,
"v_interp_p2_f16 op_sel[3] did not write the high half of v14");
Check(SpirvHasDecorationValueWithDecoration(result.spirv, 30u, 0u, 5285u),
"f16 interpolation input was not per-vertex");
Check(SpirvExtInstCount(result.spirv, 62u) == 6u,
"f16 interpolation did not unpack each of the three vertices per read");
Check(SpirvInstructionOpcodeCount(result.spirv, 133u) == 6u,
"f16 interpolation did not blend three barycentric weights per read");
CheckSpirvBinaryValidates(result.spirv);
ps_info.interpolator_settings[0] = 0x00000400u;
auto flat_result = RecompileForTest(shader, options);
Check(SpirvExtInstCount(flat_result.spirv, 62u) == 2u &&
!SpirvContainsCapability(flat_result.spirv, 5284u) &&
SpirvHasDecorationValueWithDecoration(flat_result.spirv, 30u, 0u, 14u),
"flat f16 interpolation did not unpack only the flat provoking value");
CheckSpirvBinaryValidates(flat_result.spirv);
}
void TestPerspectiveCentroidInputs() {
constexpr std::array cases{std::array{4u, UINT32_MAX, 0u},
std::array{5u, UINT32_MAX, 2u},
@@ -16828,6 +16872,7 @@ int main() {
TestNewShaderRecompilerNativeBindingPlan();
TestNewShaderRecompilerStageInputInfo();
TestCustomVintrpMovTranslation();
TestVop3F16InterpolationTranslation();
TestPerspectiveCentroidInputs();
TestPerspectiveSampleInputs();
TestGraphicsCreateInterpolantMapping();