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SPIRV-Tools/source/validate_ext_inst.cpp
Andrey Tuganov 25d396b4a2 Add ExtInst validation pass (GLSL only for now) 
Validates all GLSL.std.450 extended instructions.
2018-01-02 16:53:25 -05:00

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// Copyright (c) 2017 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Validates correctness of ExtInst SPIR-V instructions.
#include "validate.h"
#include <sstream>
#include "latest_version_glsl_std_450_header.h"
#include "latest_version_opencl_std_header.h"
#include "diagnostic.h"
#include "opcode.h"
#include "val/instruction.h"
#include "val/validation_state.h"
namespace libspirv {
// Validates correctness of ExtInst instructions.
spv_result_t ExtInstPass(ValidationState_t& _,
const spv_parsed_instruction_t* inst) {
const SpvOp opcode = static_cast<SpvOp>(inst->opcode);
const uint32_t result_type = inst->type_id;
const uint32_t num_operands = inst->num_operands;
if (opcode != SpvOpExtInst) return SPV_SUCCESS;
const uint32_t ext_inst_set = inst->words[3];
const uint32_t ext_inst_index = inst->words[4];
const spv_ext_inst_type_t ext_inst_type =
spv_ext_inst_type_t(inst->ext_inst_type);
auto ext_inst_name = [&_, ext_inst_set, ext_inst_type, ext_inst_index]() {
spv_ext_inst_desc desc = nullptr;
if (_.grammar().lookupExtInst(ext_inst_type, ext_inst_index, &desc) !=
SPV_SUCCESS ||
!desc) {
return std::string("Unknown ExtInst");
}
auto* import_inst = _.FindDef(ext_inst_set);
assert(import_inst);
std::ostringstream ss;
ss << reinterpret_cast<const char*>(import_inst->words().data() + 2);
ss << " ";
ss << desc->name;
return ss.str();
};
if (ext_inst_type == SPV_EXT_INST_TYPE_GLSL_STD_450) {
const GLSLstd450 ext_inst_key = GLSLstd450(ext_inst_index);
switch (ext_inst_key) {
case GLSLstd450Round:
case GLSLstd450RoundEven:
case GLSLstd450FAbs:
case GLSLstd450Trunc:
case GLSLstd450FSign:
case GLSLstd450Floor:
case GLSLstd450Ceil:
case GLSLstd450Fract:
case GLSLstd450Sqrt:
case GLSLstd450InverseSqrt:
case GLSLstd450FMin:
case GLSLstd450FMax:
case GLSLstd450FClamp:
case GLSLstd450FMix:
case GLSLstd450Step:
case GLSLstd450SmoothStep:
case GLSLstd450Fma:
case GLSLstd450Normalize:
case GLSLstd450FaceForward:
case GLSLstd450Reflect:
case GLSLstd450NMin:
case GLSLstd450NMax:
case GLSLstd450NClamp: {
if (!_.IsFloatScalarOrVectorType(result_type)) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected Result Type to be a float scalar or vector type";
}
for (uint32_t operand_index = 4; operand_index < num_operands;
++operand_index) {
const uint32_t operand_type = _.GetOperandTypeId(inst, operand_index);
if (result_type != operand_type) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected types of all operands to be equal to Result "
"Type";
}
}
break;
}
case GLSLstd450SAbs:
case GLSLstd450SSign:
case GLSLstd450UMin:
case GLSLstd450SMin:
case GLSLstd450UMax:
case GLSLstd450SMax:
case GLSLstd450UClamp:
case GLSLstd450SClamp:
case GLSLstd450FindILsb:
case GLSLstd450FindUMsb:
case GLSLstd450FindSMsb: {
if (!_.IsIntScalarOrVectorType(result_type)) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected Result Type to be an int scalar or vector type";
}
const uint32_t result_type_bit_width = _.GetBitWidth(result_type);
const uint32_t result_type_dimension = _.GetDimension(result_type);
for (uint32_t operand_index = 4; operand_index < num_operands;
++operand_index) {
const uint32_t operand_type = _.GetOperandTypeId(inst, operand_index);
if (!_.IsIntScalarOrVectorType(operand_type)) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected all operands to be int scalars or vectors";
}
if (result_type_dimension != _.GetDimension(operand_type)) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected all operands to have the same dimension as "
<< "Result Type";
}
if (result_type_bit_width != _.GetBitWidth(operand_type)) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected all operands to have the same bit width as "
<< "Result Type";
}
if (ext_inst_key == GLSLstd450FindUMsb ||
ext_inst_key == GLSLstd450FindSMsb) {
if (result_type_bit_width != 32) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "this instruction is currently limited to 32-bit width "
<< "components";
}
}
}
break;
}
case GLSLstd450Radians:
case GLSLstd450Degrees:
case GLSLstd450Sin:
case GLSLstd450Cos:
case GLSLstd450Tan:
case GLSLstd450Asin:
case GLSLstd450Acos:
case GLSLstd450Atan:
case GLSLstd450Sinh:
case GLSLstd450Cosh:
case GLSLstd450Tanh:
case GLSLstd450Asinh:
case GLSLstd450Acosh:
case GLSLstd450Atanh:
case GLSLstd450Exp:
case GLSLstd450Exp2:
case GLSLstd450Log:
case GLSLstd450Log2:
case GLSLstd450Atan2:
case GLSLstd450Pow: {
if (!_.IsFloatScalarOrVectorType(result_type)) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected Result Type to be a 16 or 32-bit scalar or "
"vector float type";
}
const uint32_t result_type_bit_width = _.GetBitWidth(result_type);
if (result_type_bit_width != 16 && result_type_bit_width != 32) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected Result Type to be a 16 or 32-bit scalar or "
"vector float type";
}
for (uint32_t operand_index = 4; operand_index < num_operands;
++operand_index) {
const uint32_t operand_type = _.GetOperandTypeId(inst, operand_index);
if (result_type != operand_type) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected types of all operands to be equal to Result "
"Type";
}
}
break;
}
case GLSLstd450Determinant: {
const uint32_t x_type = _.GetOperandTypeId(inst, 4);
uint32_t num_rows = 0;
uint32_t num_cols = 0;
uint32_t col_type = 0;
uint32_t component_type = 0;
if (!_.GetMatrixTypeInfo(x_type, &num_rows, &num_cols, &col_type,
&component_type) ||
num_rows != num_cols) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand X to be a square matrix";
}
if (result_type != component_type) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand X component type to be equal to "
<< "Result Type";
}
break;
}
case GLSLstd450MatrixInverse: {
uint32_t num_rows = 0;
uint32_t num_cols = 0;
uint32_t col_type = 0;
uint32_t component_type = 0;
if (!_.GetMatrixTypeInfo(result_type, &num_rows, &num_cols, &col_type,
&component_type) ||
num_rows != num_cols) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected Result Type to be a square matrix";
}
const uint32_t x_type = _.GetOperandTypeId(inst, 4);
if (result_type != x_type) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand X type to be equal to Result Type";
}
break;
}
case GLSLstd450Modf: {
if (!_.IsFloatScalarOrVectorType(result_type)) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected Result Type to be a scalar or vector float type";
}
const uint32_t x_type = _.GetOperandTypeId(inst, 4);
const uint32_t i_type = _.GetOperandTypeId(inst, 5);
if (x_type != result_type) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand X type to be equal to Result Type";
}
uint32_t i_storage_class = 0;
uint32_t i_data_type = 0;
if (!_.GetPointerTypeInfo(i_type, &i_data_type, &i_storage_class)) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand I to be a pointer";
}
if (i_data_type != result_type) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand I data type to be equal to Result Type";
}
break;
}
case GLSLstd450ModfStruct: {
std::vector<uint32_t> result_types;
if (!_.GetStructMemberTypes(result_type, &result_types) ||
result_types.size() != 2 ||
!_.IsFloatScalarOrVectorType(result_types[0]) ||
result_types[1] != result_types[0]) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected Result Type to be a struct with two identical "
<< "scalar or vector float type members";
}
const uint32_t x_type = _.GetOperandTypeId(inst, 4);
if (x_type != result_types[0]) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand X type to be equal to members of "
<< "Result Type struct";
}
break;
}
case GLSLstd450Frexp: {
if (!_.IsFloatScalarOrVectorType(result_type)) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected Result Type to be a scalar or vector float type";
}
const uint32_t x_type = _.GetOperandTypeId(inst, 4);
const uint32_t exp_type = _.GetOperandTypeId(inst, 5);
if (x_type != result_type) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand X type to be equal to Result Type";
}
uint32_t exp_storage_class = 0;
uint32_t exp_data_type = 0;
if (!_.GetPointerTypeInfo(exp_type, &exp_data_type,
&exp_storage_class)) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand Exp to be a pointer";
}
if (!_.IsIntScalarOrVectorType(exp_data_type) ||
_.GetBitWidth(exp_data_type) != 32) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand Exp data type to be a 32-bit int scalar "
<< "or vector type";
}
if (_.GetDimension(result_type) != _.GetDimension(exp_data_type)) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand Exp data type to have the same component "
<< "number as Result Type";
}
break;
}
case GLSLstd450Ldexp: {
if (!_.IsFloatScalarOrVectorType(result_type)) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected Result Type to be a scalar or vector float type";
}
const uint32_t x_type = _.GetOperandTypeId(inst, 4);
const uint32_t exp_type = _.GetOperandTypeId(inst, 5);
if (x_type != result_type) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand X type to be equal to Result Type";
}
if (!_.IsIntScalarOrVectorType(exp_type)) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand Exp to be a 32-bit int scalar "
<< "or vector type";
}
if (_.GetDimension(result_type) != _.GetDimension(exp_type)) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand Exp to have the same component "
<< "number as Result Type";
}
break;
}
case GLSLstd450FrexpStruct: {
std::vector<uint32_t> result_types;
if (!_.GetStructMemberTypes(result_type, &result_types) ||
result_types.size() != 2 ||
!_.IsFloatScalarOrVectorType(result_types[0]) ||
!_.IsIntScalarOrVectorType(result_types[1]) ||
_.GetBitWidth(result_types[1]) != 32 ||
_.GetDimension(result_types[0]) !=
_.GetDimension(result_types[1])) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected Result Type to be a struct with two members, "
<< "first member a float scalar or vector, second member "
<< "a 32-bit int scalar or vector with the same number of "
<< "components as the first member";
}
const uint32_t x_type = _.GetOperandTypeId(inst, 4);
if (x_type != result_types[0]) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand X type to be equal to the first member "
<< "of Result Type struct";
}
break;
}
case GLSLstd450PackSnorm4x8:
case GLSLstd450PackUnorm4x8: {
if (!_.IsIntScalarType(result_type) ||
_.GetBitWidth(result_type) != 32) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected Result Type to be 32-bit int scalar type";
}
const uint32_t v_type = _.GetOperandTypeId(inst, 4);
if (!_.IsFloatVectorType(v_type) || _.GetDimension(v_type) != 4 ||
_.GetBitWidth(v_type) != 32) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand V to be a 32-bit float vector of size 4";
}
break;
}
case GLSLstd450PackSnorm2x16:
case GLSLstd450PackUnorm2x16:
case GLSLstd450PackHalf2x16: {
if (!_.IsIntScalarType(result_type) ||
_.GetBitWidth(result_type) != 32) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected Result Type to be 32-bit int scalar type";
}
const uint32_t v_type = _.GetOperandTypeId(inst, 4);
if (!_.IsFloatVectorType(v_type) || _.GetDimension(v_type) != 2 ||
_.GetBitWidth(v_type) != 32) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand V to be a 32-bit float vector of size 2";
}
break;
}
case GLSLstd450PackDouble2x32: {
if (!_.IsFloatScalarType(result_type) ||
_.GetBitWidth(result_type) != 64) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected Result Type to be 64-bit float scalar type";
}
const uint32_t v_type = _.GetOperandTypeId(inst, 4);
if (!_.IsFloatVectorType(v_type) || _.GetDimension(v_type) != 2 ||
_.GetBitWidth(v_type) != 32) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand V to be a 32-bit float vector of size 2";
}
break;
}
case GLSLstd450UnpackSnorm4x8:
case GLSLstd450UnpackUnorm4x8: {
if (!_.IsFloatVectorType(result_type) ||
_.GetDimension(result_type) != 4 ||
_.GetBitWidth(result_type) != 32) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected Result Type to be a 32-bit float vector of size "
"4";
}
const uint32_t v_type = _.GetOperandTypeId(inst, 4);
if (!_.IsIntScalarType(v_type) || _.GetBitWidth(v_type) != 32) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand P to be a 32-bit int scalar";
}
break;
}
case GLSLstd450UnpackSnorm2x16:
case GLSLstd450UnpackUnorm2x16:
case GLSLstd450UnpackHalf2x16: {
if (!_.IsFloatVectorType(result_type) ||
_.GetDimension(result_type) != 2 ||
_.GetBitWidth(result_type) != 32) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected Result Type to be a 32-bit float vector of size "
"2";
}
const uint32_t v_type = _.GetOperandTypeId(inst, 4);
if (!_.IsIntScalarType(v_type) || _.GetBitWidth(v_type) != 32) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand P to be a 32-bit int scalar";
}
break;
}
case GLSLstd450UnpackDouble2x32: {
if (!_.IsFloatVectorType(result_type) ||
_.GetDimension(result_type) != 2 ||
_.GetBitWidth(result_type) != 32) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected Result Type to be a 32-bit float vector of size "
"2";
}
const uint32_t v_type = _.GetOperandTypeId(inst, 4);
if (!_.IsFloatScalarType(v_type) || _.GetBitWidth(v_type) != 64) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand V to be a 64-bit float scalar";
}
break;
}
case GLSLstd450Length: {
if (!_.IsFloatScalarType(result_type)) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected Result Type to be a float scalar type";
}
const uint32_t x_type = _.GetOperandTypeId(inst, 4);
if (!_.IsFloatScalarOrVectorType(x_type)) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand X to be of float scalar or vector type";
}
if (result_type != _.GetComponentType(x_type)) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand X component type to be equal to Result "
"Type";
}
break;
}
case GLSLstd450Distance: {
if (!_.IsFloatScalarType(result_type)) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected Result Type to be a float scalar type";
}
const uint32_t p0_type = _.GetOperandTypeId(inst, 4);
if (!_.IsFloatScalarOrVectorType(p0_type)) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand P0 to be of float scalar or vector type";
}
if (result_type != _.GetComponentType(p0_type)) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand P0 component type to be equal to "
<< "Result Type";
}
const uint32_t p1_type = _.GetOperandTypeId(inst, 5);
if (!_.IsFloatScalarOrVectorType(p1_type)) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand P1 to be of float scalar or vector type";
}
if (result_type != _.GetComponentType(p1_type)) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand P1 component type to be equal to "
<< "Result Type";
}
if (_.GetDimension(p0_type) != _.GetDimension(p1_type)) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operands P0 and P1 to have the same number of "
<< "components";
}
break;
}
case GLSLstd450Cross: {
if (!_.IsFloatVectorType(result_type)) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected Result Type to be a float vector type";
}
if (_.GetDimension(result_type) != 3) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected Result Type to have 3 components";
}
const uint32_t x_type = _.GetOperandTypeId(inst, 4);
const uint32_t y_type = _.GetOperandTypeId(inst, 5);
if (x_type != result_type) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand X type to be equal to Result Type";
}
if (y_type != result_type) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand Y type to be equal to Result Type";
}
break;
}
case GLSLstd450Refract: {
if (!_.IsFloatScalarOrVectorType(result_type)) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected Result Type to be a float scalar or vector type";
}
const uint32_t i_type = _.GetOperandTypeId(inst, 4);
const uint32_t n_type = _.GetOperandTypeId(inst, 5);
const uint32_t eta_type = _.GetOperandTypeId(inst, 6);
if (result_type != i_type) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand I to be of type equal to Result Type";
}
if (result_type != n_type) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand N to be of type equal to Result Type";
}
const uint32_t eta_type_bit_width = _.GetBitWidth(eta_type);
if (!_.IsFloatScalarType(eta_type) ||
(eta_type_bit_width != 16 && eta_type_bit_width != 32)) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected operand Eta to be a 16 or 32-bit float scalar";
}
break;
}
case GLSLstd450InterpolateAtCentroid:
case GLSLstd450InterpolateAtSample:
case GLSLstd450InterpolateAtOffset: {
if (!_.HasCapability(SpvCapabilityInterpolationFunction)) {
return _.diag(SPV_ERROR_INVALID_CAPABILITY)
<< ext_inst_name()
<< " requires capability InterpolationFunction";
}
if (!_.IsFloatScalarOrVectorType(result_type) ||
_.GetBitWidth(result_type) != 32) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected Result Type to be a 32-bit float scalar "
<< "or vector type";
}
const uint32_t interpolant_type = _.GetOperandTypeId(inst, 4);
uint32_t interpolant_storage_class = 0;
uint32_t interpolant_data_type = 0;
if (!_.GetPointerTypeInfo(interpolant_type, &interpolant_data_type,
&interpolant_storage_class)) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected Interpolant to be a pointer";
}
if (result_type != interpolant_data_type) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected Interpolant data type to be equal to Result Type";
}
if (interpolant_storage_class != SpvStorageClassInput) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected Interpolant storage class to be Input";
}
if (ext_inst_key == GLSLstd450InterpolateAtSample) {
const uint32_t sample_type = _.GetOperandTypeId(inst, 5);
if (!_.IsIntScalarType(sample_type) ||
_.GetBitWidth(sample_type) != 32) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected Sample to be 32-bit integer";
}
}
if (ext_inst_key == GLSLstd450InterpolateAtOffset) {
const uint32_t offset_type = _.GetOperandTypeId(inst, 5);
if (!_.IsFloatVectorType(offset_type) ||
_.GetDimension(offset_type) != 2 ||
_.GetBitWidth(offset_type) != 32) {
return _.diag(SPV_ERROR_INVALID_DATA)
<< ext_inst_name() << ": "
<< "expected Offset to be a vector of 2 32-bit floats";
}
}
_.current_function().RegisterExecutionModelLimitation(
SpvExecutionModelFragment,
ext_inst_name() +
std::string(" requires Fragment execution model"));
break;
}
case GLSLstd450IMix: {
return _.diag(SPV_ERROR_INVALID_DATA)
<< "Extended instruction GLSLstd450IMix is not supported";
}
case GLSLstd450Bad: {
return _.diag(SPV_ERROR_INVALID_DATA)
<< "Encountered extended instruction GLSLstd450Bad";
}
case GLSLstd450Count: {
assert(0);
break;
}
}
} else if (ext_inst_type == SPV_EXT_INST_TYPE_OPENCL_STD) {
// TODO(atgoo@github.com) Add validation rules for OpenCL extended
// instructions.
}
return SPV_SUCCESS;
}
} // namespace libspirv
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