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// Copyright (c) 2018 Google LLC.
// Copyright (c) 2019 NVIDIA Corporation
//
// 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.
#include "source/val/validate.h"
#include "source/opcode.h"
#include "source/spirv_target_env.h"
#include "source/val/instruction.h"
#include "source/val/validate_scopes.h"
#include "source/val/validation_state.h"
namespace spvtools {
namespace val {
namespace {
spv_result_t ValidateUndef(ValidationState_t& _, const Instruction* inst) {
if (_.IsVoidType(inst->type_id())) {
return _.diag(SPV_ERROR_INVALID_ID, inst)
<< "Cannot create undefined values with void type";
}
if (_.HasCapability(spv::Capability::Shader) &&
_.ContainsLimitedUseIntOrFloatType(inst->type_id()) &&
!_.IsPointerType(inst->type_id())) {
return _.diag(SPV_ERROR_INVALID_ID, inst)
<< "Cannot create undefined values with 8- or 16-bit types";
}
return SPV_SUCCESS;
}
spv_result_t ValidateShaderClock(ValidationState_t& _,
const Instruction* inst) {
const uint32_t scope = inst->GetOperandAs<uint32_t>(2);
if (auto error = ValidateScope(_, inst, scope)) {
return error;
}
bool is_int32 = false, is_const_int32 = false;
uint32_t value = 0;
std::tie(is_int32, is_const_int32, value) = _.EvalInt32IfConst(scope);
if (is_const_int32) {
spv::Scope scope_val{value};
if (spvIsVulkanEnv(_.context()->target_env)) {
if (scope_val != spv::Scope::Subgroup &&
scope_val != spv::Scope::Device) {
return _.diag(SPV_ERROR_INVALID_DATA, inst)
<< _.VkErrorID(4652) << "Scope must be Subgroup or Device";
}
} else if (spvIsOpenCLEnv(_.context()->target_env)) {
if (scope_val != spv::Scope::Workgroup &&
scope_val != spv::Scope::Subgroup &&
scope_val != spv::Scope::Device) {
return _.diag(SPV_ERROR_INVALID_DATA, inst)
<< "Scope must be Subgroup, Workgroup, or Device";
}
}
}
// Result Type must be a 64 - bit unsigned integer type or
// a vector of two - components of 32 -
// bit unsigned integer type
const uint32_t result_type = inst->type_id();
if (!_.IsUnsigned64BitHandle(result_type)) {
return _.diag(SPV_ERROR_INVALID_DATA, inst) << "Expected Value to be a "
"vector of two components"
" of unsigned integer"
" or 64bit unsigned integer";
}
return SPV_SUCCESS;
}
spv_result_t ValidateAssumeTrue(ValidationState_t& _, const Instruction* inst) {
const auto operand_type_id = _.GetOperandTypeId(inst, 0);
if (!operand_type_id || !_.IsBoolScalarType(operand_type_id)) {
return _.diag(SPV_ERROR_INVALID_ID, inst)
<< "Value operand of OpAssumeTrueKHR must be a boolean scalar";
}
return SPV_SUCCESS;
}
spv_result_t ValidateExpect(ValidationState_t& _, const Instruction* inst) {
const auto result_type = inst->type_id();
if (!_.IsBoolScalarOrVectorType(result_type) &&
!_.IsIntScalarOrVectorType(result_type)) {
return _.diag(SPV_ERROR_INVALID_ID, inst)
<< "Result of OpExpectKHR must be a scalar or vector of integer "
"type or boolean type";
}
if (_.GetOperandTypeId(inst, 2) != result_type) {
return _.diag(SPV_ERROR_INVALID_ID, inst)
<< "Type of Value operand of OpExpectKHR does not match the result "
"type ";
}
if (_.GetOperandTypeId(inst, 3) != result_type) {
return _.diag(SPV_ERROR_INVALID_ID, inst)
<< "Type of ExpectedValue operand of OpExpectKHR does not match the "
"result type ";
}
return SPV_SUCCESS;
}
} // namespace
spv_result_t MiscPass(ValidationState_t& _, const Instruction* inst) {
switch (inst->opcode()) {
case spv::Op::OpUndef:
if (auto error = ValidateUndef(_, inst)) return error;
break;
default:
break;
}
switch (inst->opcode()) {
case spv::Op::OpBeginInvocationInterlockEXT:
case spv::Op::OpEndInvocationInterlockEXT:
_.function(inst->function()->id())
->RegisterExecutionModelLimitation(
spv::ExecutionModel::Fragment,
"OpBeginInvocationInterlockEXT/OpEndInvocationInterlockEXT "
"require Fragment execution model");
_.function(inst->function()->id())
->RegisterLimitation([](const ValidationState_t& state,
const Function* entry_point,
std::string* message) {
const auto* execution_modes =
state.GetExecutionModes(entry_point->id());
auto find_interlock = [](const spv::ExecutionMode& mode) {
switch (mode) {
case spv::ExecutionMode::PixelInterlockOrderedEXT:
case spv::ExecutionMode::PixelInterlockUnorderedEXT:
case spv::ExecutionMode::SampleInterlockOrderedEXT:
case spv::ExecutionMode::SampleInterlockUnorderedEXT:
case spv::ExecutionMode::ShadingRateInterlockOrderedEXT:
case spv::ExecutionMode::ShadingRateInterlockUnorderedEXT:
return true;
default:
return false;
}
};
bool found = false;
if (execution_modes) {
auto i = std::find_if(execution_modes->begin(),
execution_modes->end(), find_interlock);
found = (i != execution_modes->end());
}
if (!found) {
*message =
"OpBeginInvocationInterlockEXT/OpEndInvocationInterlockEXT "
"require a fragment shader interlock execution mode.";
return false;
}
return true;
});
break;
case spv::Op::OpDemoteToHelperInvocationEXT:
_.function(inst->function()->id())
->RegisterExecutionModelLimitation(
spv::ExecutionModel::Fragment,
"OpDemoteToHelperInvocationEXT requires Fragment execution "
"model");
break;
case spv::Op::OpIsHelperInvocationEXT: {
const uint32_t result_type = inst->type_id();
_.function(inst->function()->id())
->RegisterExecutionModelLimitation(
spv::ExecutionModel::Fragment,
"OpIsHelperInvocationEXT requires Fragment execution model");
if (!_.IsBoolScalarType(result_type))
return _.diag(SPV_ERROR_INVALID_DATA, inst)
<< "Expected bool scalar type as Result Type: "
<< spvOpcodeString(inst->opcode());
break;
}
case spv::Op::OpReadClockKHR:
if (auto error = ValidateShaderClock(_, inst)) {
return error;
}
break;
case spv::Op::OpAssumeTrueKHR:
if (auto error = ValidateAssumeTrue(_, inst)) {
return error;
}
break;
case spv::Op::OpExpectKHR:
if (auto error = ValidateExpect(_, inst)) {
return error;
}
break;
default:
break;
}
return SPV_SUCCESS;
}
} // namespace val
} // namespace spvtools
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