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SPIRV-Tools/test/opt/graphics_robust_access_test.cpp
Ryan Harrison 34ef0c3fdc
Fix missed modification flagging (#3814) 
Fixes #3813
2020-09-16 19:57:04 -04:00

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// Copyright (c) 2019 Google LLC
//
// 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 <array>
#include <sstream>
#include <string>
#include <vector>
#include "gmock/gmock.h"
#include "pass_fixture.h"
#include "pass_utils.h"
#include "source/opt/graphics_robust_access_pass.h"
namespace {
using namespace spvtools;
using opt::GraphicsRobustAccessPass;
using GraphicsRobustAccessTest = opt::PassTest<::testing::Test>;
// Test incompatible module, determined at module-level.
TEST_F(GraphicsRobustAccessTest, FailNotShader) {
const std::string text = R"(
; CHECK: Can only process Shader modules
OpCapability Kernel
)";
SinglePassRunAndFail<GraphicsRobustAccessPass>(text);
}
TEST_F(GraphicsRobustAccessTest, FailCantProcessVariablePointers) {
const std::string text = R"(
; CHECK: Can't process modules with VariablePointers capability
OpCapability VariablePointers
)";
SinglePassRunAndFail<GraphicsRobustAccessPass>(text);
}
TEST_F(GraphicsRobustAccessTest, FailCantProcessVariablePointersStorageBuffer) {
const std::string text = R"(
; CHECK: Can't process modules with VariablePointersStorageBuffer capability
OpCapability VariablePointersStorageBuffer
)";
SinglePassRunAndFail<GraphicsRobustAccessPass>(text);
}
TEST_F(GraphicsRobustAccessTest, FailCantProcessRuntimeDescriptorArrayEXT) {
const std::string text = R"(
; CHECK: Can't process modules with RuntimeDescriptorArrayEXT capability
OpCapability RuntimeDescriptorArrayEXT
)";
SinglePassRunAndFail<GraphicsRobustAccessPass>(text);
}
TEST_F(GraphicsRobustAccessTest, FailCantProcessPhysical32AddressingModel) {
const std::string text = R"(
; CHECK: Addressing model must be Logical. Found OpMemoryModel Physical32 OpenCL
OpCapability Shader
OpMemoryModel Physical32 OpenCL
)";
SinglePassRunAndFail<GraphicsRobustAccessPass>(text);
}
TEST_F(GraphicsRobustAccessTest, FailCantProcessPhysical64AddressingModel) {
const std::string text = R"(
; CHECK: Addressing model must be Logical. Found OpMemoryModel Physical64 OpenCL
OpCapability Shader
OpMemoryModel Physical64 OpenCL
)";
SinglePassRunAndFail<GraphicsRobustAccessPass>(text);
}
TEST_F(GraphicsRobustAccessTest,
FailCantProcessPhysicalStorageBuffer64EXTAddressingModel) {
const std::string text = R"(
; CHECK: Addressing model must be Logical. Found OpMemoryModel PhysicalStorageBuffer64 GLSL450
OpCapability Shader
OpMemoryModel PhysicalStorageBuffer64EXT GLSL450
)";
SinglePassRunAndFail<GraphicsRobustAccessPass>(text);
}
// Test access chains
// Returns the names of access chain instructions handled by the pass.
// For the purposes of this pass, regular and in-bounds access chains are the
// same.)
std::vector<const char*> AccessChains() {
return {"OpAccessChain", "OpInBoundsAccessChain"};
}
std::string ShaderPreamble() {
return R"(
OpCapability Shader
OpMemoryModel Logical Simple
OpEntryPoint GLCompute %main "main"
)";
}
std::string ShaderPreamble(const std::vector<std::string>& names) {
std::ostringstream os;
os << ShaderPreamble();
for (auto& name : names) {
os << " OpName %" << name << " \"" << name << "\"\n";
}
return os.str();
}
std::string ShaderPreambleAC() {
return ShaderPreamble({"ac", "ptr_ty", "var"});
}
std::string ShaderPreambleAC(const std::vector<std::string>& names) {
auto names2 = names;
names2.push_back("ac");
names2.push_back("ptr_ty");
names2.push_back("var");
return ShaderPreamble(names2);
}
std::string DecoSSBO() {
return R"(
OpDecorate %ssbo_s BufferBlock
OpMemberDecorate %ssbo_s 0 Offset 0
OpMemberDecorate %ssbo_s 1 Offset 4
OpMemberDecorate %ssbo_s 2 Offset 16
OpDecorate %var DescriptorSet 0
OpDecorate %var Binding 0
)";
}
std::string TypesVoid() {
return R"(
%void = OpTypeVoid
%void_fn = OpTypeFunction %void
)";
}
std::string TypesInt() {
return R"(
%uint = OpTypeInt 32 0
%int = OpTypeInt 32 1
)";
}
std::string TypesFloat() {
return R"(
%float = OpTypeFloat 32
)";
}
std::string TypesShort() {
return R"(
%ushort = OpTypeInt 16 0
%short = OpTypeInt 16 1
)";
}
std::string TypesLong() {
return R"(
%ulong = OpTypeInt 64 0
%long = OpTypeInt 64 1
)";
}
std::string MainPrefix() {
return R"(
%main = OpFunction %void None %void_fn
%entry = OpLabel
)";
}
std::string MainSuffix() {
return R"(
OpReturn
OpFunctionEnd
)";
}
std::string ACCheck(const std::string& access_chain_inst,
const std::string& original,
const std::string& transformed) {
return "\n ; CHECK: %ac = " + access_chain_inst + " %ptr_ty %var" +
(transformed.empty() ? "" : " ") + transformed +
"\n ; CHECK-NOT: " + access_chain_inst +
"\n ; CHECK-NEXT: OpReturn"
"\n %ac = " +
access_chain_inst + " %ptr_ty %var " + (original.empty() ? "" : " ") +
original + "\n";
}
std::string ACCheckFail(const std::string& access_chain_inst,
const std::string& original,
const std::string& transformed) {
return "\n ; CHECK: %ac = " + access_chain_inst + " %ptr_ty %var" +
(transformed.empty() ? "" : " ") + transformed +
"\n ; CHECK-NOT: " + access_chain_inst +
"\n ; CHECK-NOT: OpReturn"
"\n %ac = " +
access_chain_inst + " %ptr_ty %var " + (original.empty() ? "" : " ") +
original + "\n";
}
// Access chain into:
// Vector
// Vector sizes 2, 3, 4
// Matrix
// Matrix columns 2, 4
// Component is vector 2, 4
// Array
// Struct
// TODO(dneto): RuntimeArray
TEST_F(GraphicsRobustAccessTest, ACVectorLeastInboundConstantUntouched) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC() << TypesVoid() << TypesInt() << R"(
%uvec2 = OpTypeVector %uint 2
%var_ty = OpTypePointer Function %uvec2
%ptr_ty = OpTypePointer Function %uint
%uint_0 = OpConstant %uint 0
)"
<< MainPrefix() << R"(
%var = OpVariable %var_ty Function)" << ACCheck(ac, "%uint_0", "%uint_0")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACVectorMostInboundConstantUntouched) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC() << TypesVoid() << TypesInt() << R"(
%v4uint = OpTypeVector %uint 4
%var_ty = OpTypePointer Function %v4uint
%ptr_ty = OpTypePointer Function %uint
%uint_3 = OpConstant %uint 3
)"
<< MainPrefix() << R"(
%var = OpVariable %var_ty Function)" << ACCheck(ac, "%uint_3", "%uint_3")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACVectorExcessConstantClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC() << TypesVoid() << TypesInt() << R"(
%v4uint = OpTypeVector %uint 4
%var_ty = OpTypePointer Function %v4uint
%ptr_ty = OpTypePointer Function %uint
%uint_4 = OpConstant %uint 4
)"
<< MainPrefix() << R"(
%var = OpVariable %var_ty Function)" << ACCheck(ac, "%uint_4", "%int_3")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACVectorNegativeConstantClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC() << TypesVoid() << TypesInt() << R"(
%v4uint = OpTypeVector %uint 4
%var_ty = OpTypePointer Function %v4uint
%ptr_ty = OpTypePointer Function %uint
%int_n1 = OpConstant %int -1
)"
<< MainPrefix() << R"(
; CHECK: %int_0 = OpConstant %int 0
%var = OpVariable %var_ty Function)" << ACCheck(ac, "%int_n1", "%int_0")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
// Like the previous test, but ensures the pass knows how to modify an index
// which does not come first in the access chain.
TEST_F(GraphicsRobustAccessTest, ACVectorInArrayNegativeConstantClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC() << TypesVoid() << TypesInt() << R"(
%v4uint = OpTypeVector %uint 4
%uint_1 = OpConstant %uint 1
%uint_2 = OpConstant %uint 2
%arr = OpTypeArray %v4uint %uint_2
%var_ty = OpTypePointer Function %arr
%ptr_ty = OpTypePointer Function %uint
%int_n1 = OpConstant %int -1
)"
<< MainPrefix() << R"(
; CHECK: %int_0 = OpConstant %int 0
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%uint_1 %int_n1", "%uint_1 %int_0") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACVectorGeneralClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"i"}) << TypesVoid() << TypesInt() << R"(
%v4uint = OpTypeVector %uint 4
%var_ty = OpTypePointer Function %v4uint
%ptr_ty = OpTypePointer Function %uint
%i = OpUndef %int)"
<< MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %int_0 = OpConstant %int 0
; CHECK-DAG: %int_3 = OpConstant %int 3
; CHECK: OpLabel
; CHECK: %[[clamp:\w+]] = OpExtInst %int %[[GLSLSTD450]] SClamp %i %int_0 %int_3
%var = OpVariable %var_ty Function)" << ACCheck(ac, "%i", "%[[clamp]]")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACVectorGeneralShortClamped) {
// Show that signed 16 bit integers are clamped as well.
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int16\n"
<< ShaderPreambleAC({"i"}) << TypesVoid() << TypesShort() <<
R"(
%v4short = OpTypeVector %short 4
%var_ty = OpTypePointer Function %v4short
%ptr_ty = OpTypePointer Function %short
%i = OpUndef %short)"
<< MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-NOT: = OpTypeInt 32
; CHECK-DAG: %short_0 = OpConstant %short 0
; CHECK-DAG: %short_3 = OpConstant %short 3
; CHECK-NOT: = OpTypeInt 32
; CHECK: OpLabel
; CHECK: %[[clamp:\w+]] = OpExtInst %short %[[GLSLSTD450]] SClamp %i %short_0 %short_3
%var = OpVariable %var_ty Function)" << ACCheck(ac, "%i", "%[[clamp]]")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACVectorGeneralUShortClamped) {
// Show that unsigned 16 bit integers are clamped as well.
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int16\n"
<< ShaderPreambleAC({"i"}) << TypesVoid() << TypesShort() <<
R"(
%v4ushort = OpTypeVector %ushort 4
%var_ty = OpTypePointer Function %v4ushort
%ptr_ty = OpTypePointer Function %ushort
%i = OpUndef %ushort)"
<< MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-NOT: = OpTypeInt 32
; CHECK-DAG: %short_0 = OpConstant %short 0
; CHECK-DAG: %short_3 = OpConstant %short 3
; CHECK-NOT: = OpTypeInt 32
; CHECK: OpLabel
; CHECK: %[[clamp:\w+]] = OpExtInst %ushort %[[GLSLSTD450]] SClamp %i %short_0 %short_3
%var = OpVariable %var_ty Function)" << ACCheck(ac, "%i", "%[[clamp]]")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACVectorGeneralLongClamped) {
// Show that signed 64 bit integers are clamped as well.
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int64\n"
<< ShaderPreambleAC({"i"}) << TypesVoid() << TypesLong() <<
R"(
%v4long = OpTypeVector %long 4
%var_ty = OpTypePointer Function %v4long
%ptr_ty = OpTypePointer Function %long
%i = OpUndef %long)"
<< MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-NOT: = OpTypeInt 32
; CHECK-DAG: %long_0 = OpConstant %long 0
; CHECK-DAG: %long_3 = OpConstant %long 3
; CHECK-NOT: = OpTypeInt 32
; CHECK: OpLabel
; CHECK: %[[clamp:\w+]] = OpExtInst %long %[[GLSLSTD450]] SClamp %i %long_0 %long_3
%var = OpVariable %var_ty Function)" << ACCheck(ac, "%i", "%[[clamp]]")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACVectorGeneralULongClamped) {
// Show that unsigned 64 bit integers are clamped as well.
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int64\n"
<< ShaderPreambleAC({"i"}) << TypesVoid() << TypesLong() <<
R"(
%v4ulong = OpTypeVector %ulong 4
%var_ty = OpTypePointer Function %v4ulong
%ptr_ty = OpTypePointer Function %ulong
%i = OpUndef %ulong)"
<< MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-NOT: = OpTypeInt 32
; CHECK-DAG: %long_0 = OpConstant %long 0
; CHECK-DAG: %long_3 = OpConstant %long 3
; CHECK-NOT: = OpTypeInt 32
; CHECK: OpLabel
; CHECK: %[[clamp:\w+]] = OpExtInst %ulong %[[GLSLSTD450]] SClamp %i %long_0 %long_3
%var = OpVariable %var_ty Function)" << ACCheck(ac, "%i", "%[[clamp]]")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACMatrixLeastInboundConstantUntouched) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC() << TypesVoid() << TypesInt()
<< TypesFloat() << R"(
%v2float = OpTypeVector %float 2
%mat4v2float = OpTypeMatrix %v2float 4
%var_ty = OpTypePointer Function %mat4v2float
%ptr_ty = OpTypePointer Function %float
%uint_0 = OpConstant %uint 0
%uint_1 = OpConstant %uint 1
)" << MainPrefix() << R"(
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%uint_0 %uint_1", "%uint_0 %uint_1")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACMatrixMostInboundConstantUntouched) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC() << TypesVoid() << TypesInt()
<< TypesFloat() << R"(
%v2float = OpTypeVector %float 2
%mat4v2float = OpTypeMatrix %v2float 4
%var_ty = OpTypePointer Function %mat4v2float
%ptr_ty = OpTypePointer Function %float
%uint_1 = OpConstant %uint 1
%uint_3 = OpConstant %uint 3
)" << MainPrefix() << R"(
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%uint_3 %uint_1", "%uint_3 %uint_1")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACMatrixExcessConstantClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC() << TypesVoid() << TypesInt()
<< TypesFloat() << R"(
%v2float = OpTypeVector %float 2
%mat4v2float = OpTypeMatrix %v2float 4
%var_ty = OpTypePointer Function %mat4v2float
%ptr_ty = OpTypePointer Function %float
%uint_1 = OpConstant %uint 1
%uint_4 = OpConstant %uint 4
)" << MainPrefix() << R"(
; CHECK: %int_3 = OpConstant %int 3
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%uint_4 %uint_1", "%int_3 %uint_1") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACMatrixNegativeConstantClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC() << TypesVoid() << TypesInt()
<< TypesFloat() << R"(
%v2float = OpTypeVector %float 2
%mat4v2float = OpTypeMatrix %v2float 4
%var_ty = OpTypePointer Function %mat4v2float
%ptr_ty = OpTypePointer Function %float
%uint_1 = OpConstant %uint 1
%int_n1 = OpConstant %int -1
)" << MainPrefix() << R"(
; CHECK: %int_0 = OpConstant %int 0
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%int_n1 %uint_1", "%int_0 %uint_1") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACMatrixGeneralClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"i"}) << TypesVoid() << TypesInt()
<< TypesFloat() << R"(
%v2float = OpTypeVector %float 2
%mat4v2float = OpTypeMatrix %v2float 4
%var_ty = OpTypePointer Function %mat4v2float
%ptr_ty = OpTypePointer Function %float
%uint_1 = OpConstant %uint 1
%i = OpUndef %int
)" << MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %int_0 = OpConstant %int 0
; CHECK-DAG: %int_3 = OpConstant %int 3
; CHECK: OpLabel
; CHECK: %[[clamp:\w+]] = OpExtInst %int %[[GLSLSTD450]] SClamp %i %int_0 %int_3
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%i %uint_1", "%[[clamp]] %uint_1") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACArrayLeastInboundConstantUntouched) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC() << TypesVoid() << TypesInt()
<< TypesFloat() << R"(
%uint_200 = OpConstant %uint 200
%arr = OpTypeArray %float %uint_200
%var_ty = OpTypePointer Function %arr
%ptr_ty = OpTypePointer Function %float
%int_0 = OpConstant %int 0
)" << MainPrefix() << R"(
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%int_0", "%int_0") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACArrayMostInboundConstantUntouched) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC() << TypesVoid() << TypesInt()
<< TypesFloat() << R"(
%uint_200 = OpConstant %uint 200
%arr = OpTypeArray %float %uint_200
%var_ty = OpTypePointer Function %arr
%ptr_ty = OpTypePointer Function %float
%int_199 = OpConstant %int 199
)" << MainPrefix() << R"(
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%int_199", "%int_199") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACArrayGeneralClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"i"}) << TypesVoid() << TypesInt()
<< TypesFloat() << R"(
%uint_200 = OpConstant %uint 200
%arr = OpTypeArray %float %uint_200
%var_ty = OpTypePointer Function %arr
%ptr_ty = OpTypePointer Function %float
%i = OpUndef %int
)" << MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %int_0 = OpConstant %int 0
; CHECK-DAG: %int_199 = OpConstant %int 199
; CHECK: OpLabel
; CHECK: %[[clamp:\w+]] = OpExtInst %int %[[GLSLSTD450]] SClamp %i %int_0 %int_199
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%i", "%[[clamp]]") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACArrayGeneralShortIndexUIntBoundsClamped) {
// Index is signed short, array bounds overflows the index type.
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int16\n"
<< ShaderPreambleAC({"i"}) << TypesVoid() << TypesInt()
<< TypesShort() << TypesFloat() << R"(
%uint_70000 = OpConstant %uint 70000 ; overflows 16bits
%arr = OpTypeArray %float %uint_70000
%var_ty = OpTypePointer Function %arr
%ptr_ty = OpTypePointer Function %float
%i = OpUndef %short
)" << MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %int_0 = OpConstant %int 0
; CHECK-DAG: %int_69999 = OpConstant %int 69999
; CHECK: OpLabel
; CHECK: %[[i_ext:\w+]] = OpSConvert %uint %i
; CHECK: %[[clamp:\w+]] = OpExtInst %uint %[[GLSLSTD450]] SClamp %[[i_ext]] %int_0 %int_69999
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%i", "%[[clamp]]") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACArrayGeneralUShortIndexIntBoundsClamped) {
// Index is unsigned short, array bounds overflows the index type.
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int16\n"
<< ShaderPreambleAC({"i"}) << TypesVoid() << TypesInt()
<< TypesShort() << TypesFloat() << R"(
%int_70000 = OpConstant %int 70000 ; overflows 16bits
%arr = OpTypeArray %float %int_70000
%var_ty = OpTypePointer Function %arr
%ptr_ty = OpTypePointer Function %float
%i = OpUndef %ushort
)" << MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %int_0 = OpConstant %int 0
; CHECK-DAG: %int_69999 = OpConstant %int 69999
; CHECK: OpLabel
; CHECK: %[[i_ext:\w+]] = OpUConvert %uint %i
; CHECK: %[[clamp:\w+]] = OpExtInst %uint %[[GLSLSTD450]] SClamp %[[i_ext]] %int_0 %int_69999
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%i", "%[[clamp]]") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACArrayGeneralUIntIndexShortBoundsClamped) {
// Signed int index i is wider than the array bounds type.
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int16\n"
<< ShaderPreambleAC({"i"}) << TypesVoid() << TypesInt()
<< TypesShort() << TypesFloat() << R"(
%short_200 = OpConstant %short 200
%arr = OpTypeArray %float %short_200
%var_ty = OpTypePointer Function %arr
%ptr_ty = OpTypePointer Function %float
%i = OpUndef %uint
)" << MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %int_0 = OpConstant %int 0
; CHECK-DAG: %int_199 = OpConstant %int 199
; CHECK: OpLabel
; CHECK: %[[clamp:\w+]] = OpExtInst %uint %[[GLSLSTD450]] SClamp %i %int_0 %int_199
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%i", "%[[clamp]]") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACArrayGeneralIntIndexUShortBoundsClamped) {
// Unsigned int index i is wider than the array bounds type.
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int16\n"
<< ShaderPreambleAC({"i"}) << TypesVoid() << TypesInt()
<< TypesShort() << TypesFloat() << R"(
%ushort_200 = OpConstant %ushort 200
%arr = OpTypeArray %float %ushort_200
%var_ty = OpTypePointer Function %arr
%ptr_ty = OpTypePointer Function %float
%i = OpUndef %int
)" << MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %int_0 = OpConstant %int 0
; CHECK-DAG: %int_199 = OpConstant %int 199
; CHECK: OpLabel
; CHECK: %[[clamp:\w+]] = OpExtInst %int %[[GLSLSTD450]] SClamp %i %int_0 %int_199
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%i", "%[[clamp]]") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACArrayGeneralLongIndexUIntBoundsClamped) {
// Signed long index i is wider than the array bounds type.
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int64\n"
<< ShaderPreambleAC({"i"}) << TypesVoid() << TypesInt()
<< TypesLong() << TypesFloat() << R"(
%uint_200 = OpConstant %uint 200
%arr = OpTypeArray %float %uint_200
%var_ty = OpTypePointer Function %arr
%ptr_ty = OpTypePointer Function %float
%i = OpUndef %long
)" << MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %long_0 = OpConstant %long 0
; CHECK-DAG: %long_199 = OpConstant %long 199
; CHECK: OpLabel
; CHECK: %[[clamp:\w+]] = OpExtInst %long %[[GLSLSTD450]] SClamp %i %long_0 %long_199
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%i", "%[[clamp]]") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACArrayGeneralULongIndexIntBoundsClamped) {
// Unsigned long index i is wider than the array bounds type.
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int64\n"
<< ShaderPreambleAC({"i"}) << TypesVoid() << TypesInt()
<< TypesLong() << TypesFloat() << R"(
%int_200 = OpConstant %int 200
%arr = OpTypeArray %float %int_200
%var_ty = OpTypePointer Function %arr
%ptr_ty = OpTypePointer Function %float
%i = OpUndef %ulong
)" << MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %long_0 = OpConstant %long 0
; CHECK-DAG: %long_199 = OpConstant %long 199
; CHECK: OpLabel
; CHECK: %[[clamp:\w+]] = OpExtInst %ulong %[[GLSLSTD450]] SClamp %i %long_0 %long_199
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%i", "%[[clamp]]") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest,
ACArrayGeneralShortIndeArrayBiggerThanShortMaxClipsToShortIntMax) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int16\n"
<< ShaderPreambleAC({"i"}) << TypesVoid() << TypesShort()
<< TypesInt() << TypesFloat() << R"(
%uint_50000 = OpConstant %uint 50000
%arr = OpTypeArray %float %uint_50000
%var_ty = OpTypePointer Function %arr
%ptr_ty = OpTypePointer Function %float
%i = OpUndef %ushort
)" << MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %short_0 = OpConstant %short 0
; CHECK-DAG: %[[intmax:\w+]] = OpConstant %short 32767
; CHECK: OpLabel
; CHECK: %[[clamp:\w+]] = OpExtInst %ushort %[[GLSLSTD450]] SClamp %i %short_0 %[[intmax]]
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%i", "%[[clamp]]") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest,
ACArrayGeneralIntIndexArrayBiggerThanIntMaxClipsToSignedIntMax) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"i"}) << TypesVoid() << TypesInt()
<< TypesFloat() << R"(
%uint_3000000000 = OpConstant %uint 3000000000
%arr = OpTypeArray %float %uint_3000000000
%var_ty = OpTypePointer Function %arr
%ptr_ty = OpTypePointer Function %float
%i = OpUndef %uint
)" << MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %int_0 = OpConstant %int 0
; CHECK-DAG: %[[intmax:\w+]] = OpConstant %int 2147483647
; CHECK: OpLabel
; CHECK: %[[clamp:\w+]] = OpExtInst %uint %[[GLSLSTD450]] SClamp %i %int_0 %[[intmax]]
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%i", "%[[clamp]]") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest,
ACArrayGeneralLongIndexArrayBiggerThanLongMaxClipsToSignedLongMax) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int64\n"
<< ShaderPreambleAC({"i"}) << TypesVoid() << TypesInt()
<< TypesLong()
<< TypesFloat()
// 2^63 == 9,223,372,036,854,775,807
<< R"(
%ulong_9223372036854775999 = OpConstant %ulong 9223372036854775999
%arr = OpTypeArray %float %ulong_9223372036854775999
%var_ty = OpTypePointer Function %arr
%ptr_ty = OpTypePointer Function %float
%i = OpUndef %ulong
)"
<< MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %long_0 = OpConstant %long 0
; CHECK-DAG: %[[intmax:\w+]] = OpConstant %long 9223372036854775807
; CHECK: OpLabel
; CHECK: %[[clamp:\w+]] = OpExtInst %ulong %[[GLSLSTD450]] SClamp %i %long_0 %[[intmax]]
%var = OpVariable %var_ty Function)" << ACCheck(ac, "%i", "%[[clamp]]")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACArraySpecIdSizedAlwaysClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"spec200"}) << R"(
OpDecorate %spec200 SpecId 0 )" << TypesVoid() << TypesInt()
<< TypesFloat() << R"(
%spec200 = OpSpecConstant %int 200
%arr = OpTypeArray %float %spec200
%var_ty = OpTypePointer Function %arr
%ptr_ty = OpTypePointer Function %float
%uint_5 = OpConstant %uint 5
)" << MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %uint_0 = OpConstant %uint 0
; CHECK-DAG: %uint_1 = OpConstant %uint 1
; CHECK-DAG: %[[uint_intmax:\w+]] = OpConstant %uint 2147483647
; CHECK: OpLabel
; CHECK: %[[max:\w+]] = OpISub %uint %spec200 %uint_1
; CHECK: %[[smin:\w+]] = OpExtInst %uint %[[GLSLSTD450]] UMin %[[max]] %[[uint_intmax]]
; CHECK: %[[clamp:\w+]] = OpExtInst %uint %[[GLSLSTD450]] SClamp %uint_5 %uint_0 %[[smin]]
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%uint_5", "%[[clamp]]") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACStructLeastUntouched) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC() << TypesVoid() << TypesInt()
<< TypesFloat() << R"(
%struct = OpTypeStruct %float %float %float
%var_ty = OpTypePointer Function %struct
%ptr_ty = OpTypePointer Function %float
%int_0 = OpConstant %int 0
)" << MainPrefix() << R"(
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%int_0", "%int_0") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACStructMostUntouched) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC() << TypesVoid() << TypesInt()
<< TypesFloat() << R"(
%struct = OpTypeStruct %float %float %float
%var_ty = OpTypePointer Function %struct
%ptr_ty = OpTypePointer Function %float
%int_2 = OpConstant %int 2
)" << MainPrefix() << R"(
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%int_2", "%int_2") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACStructSpecConstantFail) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"struct", "spec200"})
<< "OpDecorate %spec200 SpecId 0\n"
<<
TypesVoid() << TypesInt() << TypesFloat() << R"(
%spec200 = OpSpecConstant %int 200
%struct = OpTypeStruct %float %float %float
%var_ty = OpTypePointer Function %struct
%ptr_ty = OpTypePointer Function %float
)" << MainPrefix() << R"(
%var = OpVariable %var_ty Function
; CHECK: Member index into struct is not a constant integer
; CHECK-SAME: %spec200 = OpSpecConstant %int 200
)"
<< ACCheckFail(ac, "%spec200", "%spec200") << MainSuffix();
SinglePassRunAndFail<GraphicsRobustAccessPass>(shaders.str());
}
}
TEST_F(GraphicsRobustAccessTest, ACStructFloatConstantFail) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"struct"}) <<
TypesVoid() << TypesInt() << TypesFloat() << R"(
%float_2 = OpConstant %float 2
%struct = OpTypeStruct %float %float %float
%var_ty = OpTypePointer Function %struct
%ptr_ty = OpTypePointer Function %float
)" << MainPrefix() << R"(
%var = OpVariable %var_ty Function
; CHECK: Member index into struct is not a constant integer
; CHECK-SAME: %float_2 = OpConstant %float 2
)"
<< ACCheckFail(ac, "%float_2", "%float_2") << MainSuffix();
SinglePassRunAndFail<GraphicsRobustAccessPass>(shaders.str());
}
}
TEST_F(GraphicsRobustAccessTest, ACStructNonConstantFail) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"struct", "i"}) <<
TypesVoid() << TypesInt() << TypesFloat() << R"(
%float_2 = OpConstant %float 2
%struct = OpTypeStruct %float %float %float
%var_ty = OpTypePointer Function %struct
%ptr_ty = OpTypePointer Function %float
%i = OpUndef %int
)" << MainPrefix() << R"(
%var = OpVariable %var_ty Function
; CHECK: Member index into struct is not a constant integer
; CHECK-SAME: %i = OpUndef %int
)"
<< ACCheckFail(ac, "%i", "%i") << MainSuffix();
SinglePassRunAndFail<GraphicsRobustAccessPass>(shaders.str());
}
}
TEST_F(GraphicsRobustAccessTest, ACStructExcessFail) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"struct", "i"}) << TypesVoid() << TypesInt()
<< TypesFloat() << R"(
%struct = OpTypeStruct %float %float %float
%var_ty = OpTypePointer Function %struct
%ptr_ty = OpTypePointer Function %float
%i = OpConstant %int 4
)" << MainPrefix() << R"(
%var = OpVariable %var_ty Function
; CHECK: Member index 4 is out of bounds for struct type:
; CHECK-SAME: %struct = OpTypeStruct %float %float %float
)"
<< ACCheckFail(ac, "%i", "%i") << MainSuffix();
SinglePassRunAndFail<GraphicsRobustAccessPass>(shaders.str());
}
}
TEST_F(GraphicsRobustAccessTest, ACStructNegativeFail) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"struct", "i"}) << TypesVoid() << TypesInt()
<< TypesFloat() << R"(
%struct = OpTypeStruct %float %float %float
%var_ty = OpTypePointer Function %struct
%ptr_ty = OpTypePointer Function %float
%i = OpConstant %int -1
)" << MainPrefix() << R"(
%var = OpVariable %var_ty Function
; CHECK: Member index -1 is out of bounds for struct type:
; CHECK-SAME: %struct = OpTypeStruct %float %float %float
)"
<< ACCheckFail(ac, "%i", "%i") << MainSuffix();
SinglePassRunAndFail<GraphicsRobustAccessPass>(shaders.str());
}
}
TEST_F(GraphicsRobustAccessTest, ACRTArrayLeastInboundClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC() << "OpDecorate %rtarr ArrayStride 4 "
<< DecoSSBO() << TypesVoid() << TypesInt() << TypesFloat() << R"(
%rtarr = OpTypeRuntimeArray %float
%ssbo_s = OpTypeStruct %uint %uint %rtarr
%var_ty = OpTypePointer Uniform %ssbo_s
%ptr_ty = OpTypePointer Uniform %float
%var = OpVariable %var_ty Uniform
%int_0 = OpConstant %int 0
%int_2 = OpConstant %int 2
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %int_1 = OpConstant %int 1
; CHECK-DAG: %[[intmax:\w+]] = OpConstant %int 2147483647
; CHECK: OpLabel
; CHECK: %[[arrlen:\w+]] = OpArrayLength %uint %var 2
; CHECK: %[[max:\w+]] = OpISub %int %[[arrlen]] %int_1
; CHECK: %[[smin:\w+]] = OpExtInst %int %[[GLSLSTD450]] UMin %[[max]] %[[intmax]]
; CHECK: %[[clamp:\w+]] = OpExtInst %int %[[GLSLSTD450]] SClamp %int_0 %int_0 %[[smin]]
)"
<< MainPrefix() << ACCheck(ac, "%int_2 %int_0", "%int_2 %[[clamp]]")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACRTArrayGeneralShortIndexClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int16\n"
<< ShaderPreambleAC({"i"}) << "OpDecorate %rtarr ArrayStride 4 "
<< DecoSSBO() << TypesVoid() << TypesShort() << TypesFloat() << R"(
%rtarr = OpTypeRuntimeArray %float
%ssbo_s = OpTypeStruct %short %short %rtarr
%var_ty = OpTypePointer Uniform %ssbo_s
%ptr_ty = OpTypePointer Uniform %float
%var = OpVariable %var_ty Uniform
%short_2 = OpConstant %short 2
%i = OpUndef %short
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK: %uint = OpTypeInt 32 0
; CHECK-DAG: %uint_1 = OpConstant %uint 1
; CHECK-DAG: %uint_0 = OpConstant %uint 0
; CHECK-DAG: %[[intmax:\w+]] = OpConstant %uint 2147483647
; CHECK: OpLabel
; CHECK: %[[arrlen:\w+]] = OpArrayLength %uint %var 2
; CHECK-DAG: %[[max:\w+]] = OpISub %uint %[[arrlen]] %uint_1
; CHECK-DAG: %[[i_ext:\w+]] = OpSConvert %uint %i
; CHECK: %[[smin:\w+]] = OpExtInst %uint %[[GLSLSTD450]] UMin %[[max]] %[[intmax]]
; CHECK: %[[clamp:\w+]] = OpExtInst %uint %[[GLSLSTD450]] SClamp %[[i_ext]] %uint_0 %[[smin]]
)"
<< MainPrefix() << ACCheck(ac, "%short_2 %i", "%short_2 %[[clamp]]")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACRTArrayGeneralUShortIndexClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int16\n"
<< ShaderPreambleAC({"i"}) << "OpDecorate %rtarr ArrayStride 4 "
<< DecoSSBO() << TypesVoid() << TypesShort() << TypesFloat() << R"(
%rtarr = OpTypeRuntimeArray %float
%ssbo_s = OpTypeStruct %short %short %rtarr
%var_ty = OpTypePointer Uniform %ssbo_s
%ptr_ty = OpTypePointer Uniform %float
%var = OpVariable %var_ty Uniform
%short_2 = OpConstant %short 2
%i = OpUndef %ushort
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK: %uint = OpTypeInt 32 0
; CHECK-DAG: %uint_1 = OpConstant %uint 1
; CHECK-DAG: %uint_0 = OpConstant %uint 0
; CHECK-DAG: %[[intmax:\w+]] = OpConstant %uint 2147483647
; CHECK: OpLabel
; CHECK: %[[arrlen:\w+]] = OpArrayLength %uint %var 2
; CHECK-DAG: %[[max:\w+]] = OpISub %uint %[[arrlen]] %uint_1
; CHECK-DAG: %[[i_ext:\w+]] = OpSConvert %uint %i
; CHECK: %[[smin:\w+]] = OpExtInst %uint %[[GLSLSTD450]] UMin %[[max]] %[[intmax]]
; CHECK: %[[clamp:\w+]] = OpExtInst %uint %[[GLSLSTD450]] SClamp %[[i_ext]] %uint_0 %[[smin]]
)"
<< MainPrefix() << ACCheck(ac, "%short_2 %i", "%short_2 %[[clamp]]")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACRTArrayGeneralIntIndexClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"i"}) << "OpDecorate %rtarr ArrayStride 4 "
<< DecoSSBO() << TypesVoid() << TypesInt() << TypesFloat() << R"(
%rtarr = OpTypeRuntimeArray %float
%ssbo_s = OpTypeStruct %int %int %rtarr
%var_ty = OpTypePointer Uniform %ssbo_s
%ptr_ty = OpTypePointer Uniform %float
%var = OpVariable %var_ty Uniform
%int_2 = OpConstant %int 2
%i = OpUndef %int
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %int_1 = OpConstant %int 1
; CHECK-DAG: %int_0 = OpConstant %int 0
; CHECK-DAG: %[[intmax:\w+]] = OpConstant %int 2147483647
; CHECK: OpLabel
; CHECK: %[[arrlen:\w+]] = OpArrayLength %uint %var 2
; CHECK: %[[max:\w+]] = OpISub %int %[[arrlen]] %int_1
; CHECK: %[[smin:\w+]] = OpExtInst %int %[[GLSLSTD450]] UMin %[[max]] %[[intmax]]
; CHECK: %[[clamp:\w+]] = OpExtInst %int %[[GLSLSTD450]] SClamp %i %int_0 %[[smin]]
)"
<< MainPrefix() << ACCheck(ac, "%int_2 %i", "%int_2 %[[clamp]]")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACRTArrayGeneralUIntIndexClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"i"}) << "OpDecorate %rtarr ArrayStride 4 "
<< DecoSSBO() << TypesVoid() << TypesInt() << TypesFloat() << R"(
%rtarr = OpTypeRuntimeArray %float
%ssbo_s = OpTypeStruct %int %int %rtarr
%var_ty = OpTypePointer Uniform %ssbo_s
%ptr_ty = OpTypePointer Uniform %float
%var = OpVariable %var_ty Uniform
%int_2 = OpConstant %int 2
%i = OpUndef %uint
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %uint_1 = OpConstant %uint 1
; CHECK-DAG: %uint_0 = OpConstant %uint 0
; CHECK-DAG: %[[intmax:\w+]] = OpConstant %uint 2147483647
; CHECK: OpLabel
; CHECK: %[[arrlen:\w+]] = OpArrayLength %uint %var 2
; CHECK: %[[max:\w+]] = OpISub %uint %[[arrlen]] %uint_1
; CHECK: %[[smin:\w+]] = OpExtInst %uint %[[GLSLSTD450]] UMin %[[max]] %[[intmax]]
; CHECK: %[[clamp:\w+]] = OpExtInst %uint %[[GLSLSTD450]] SClamp %i %uint_0 %[[smin]]
)"
<< MainPrefix() << ACCheck(ac, "%int_2 %i", "%int_2 %[[clamp]]")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACRTArrayGeneralLongIndexClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int64" << ShaderPreambleAC({"i"})
<< "OpDecorate %rtarr ArrayStride 4 " << DecoSSBO() << TypesVoid()
<< TypesInt() << TypesLong() << TypesFloat() << R"(
%rtarr = OpTypeRuntimeArray %float
%ssbo_s = OpTypeStruct %int %int %rtarr
%var_ty = OpTypePointer Uniform %ssbo_s
%ptr_ty = OpTypePointer Uniform %float
%var = OpVariable %var_ty Uniform
%int_2 = OpConstant %int 2
%i = OpUndef %long
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %long_0 = OpConstant %long 0
; CHECK-DAG: %long_1 = OpConstant %long 1
; CHECK-DAG: %[[longmax:\w+]] = OpConstant %long 9223372036854775807
; CHECK: OpLabel
; CHECK: %[[arrlen:\w+]] = OpArrayLength %uint %var 2
; CHECK: %[[arrlen_ext:\w+]] = OpUConvert %ulong %[[arrlen]]
; CHECK: %[[max:\w+]] = OpISub %long %[[arrlen_ext]] %long_1
; CHECK: %[[smin:\w+]] = OpExtInst %long %[[GLSLSTD450]] UMin %[[max]] %[[longmax]]
; CHECK: %[[clamp:\w+]] = OpExtInst %long %[[GLSLSTD450]] SClamp %i %long_0 %[[smin]]
)" << MainPrefix()
<< ACCheck(ac, "%int_2 %i", "%int_2 %[[clamp]]") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACRTArrayGeneralULongIndexClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int64" << ShaderPreambleAC({"i"})
<< "OpDecorate %rtarr ArrayStride 4 " << DecoSSBO() << TypesVoid()
<< TypesInt() << TypesLong() << TypesFloat() << R"(
%rtarr = OpTypeRuntimeArray %float
%ssbo_s = OpTypeStruct %int %int %rtarr
%var_ty = OpTypePointer Uniform %ssbo_s
%ptr_ty = OpTypePointer Uniform %float
%var = OpVariable %var_ty Uniform
%int_2 = OpConstant %int 2
%i = OpUndef %ulong
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %ulong_0 = OpConstant %ulong 0
; CHECK-DAG: %ulong_1 = OpConstant %ulong 1
; CHECK-DAG: %[[longmax:\w+]] = OpConstant %ulong 9223372036854775807
; CHECK: OpLabel
; CHECK: %[[arrlen:\w+]] = OpArrayLength %uint %var 2
; CHECK: %[[arrlen_ext:\w+]] = OpUConvert %ulong %[[arrlen]]
; CHECK: %[[max:\w+]] = OpISub %ulong %[[arrlen_ext]] %ulong_1
; CHECK: %[[smin:\w+]] = OpExtInst %ulong %[[GLSLSTD450]] UMin %[[max]] %[[longmax]]
; CHECK: %[[clamp:\w+]] = OpExtInst %ulong %[[GLSLSTD450]] SClamp %i %ulong_0 %[[smin]]
)" << MainPrefix()
<< ACCheck(ac, "%int_2 %i", "%int_2 %[[clamp]]") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACRTArrayStructVectorElem) {
// The point of this test is that the access chain can have indices past the
// index into the runtime array. For good measure, the index into the final
// struct is out of bounds. We have to clamp that index too.
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"i", "j"})
<< "OpDecorate %rtarr ArrayStride 32\n"
<< DecoSSBO() << "OpMemberDecorate %rtelem 0 Offset 0\n"
<< "OpMemberDecorate %rtelem 1 Offset 16\n"
<< TypesVoid() << TypesInt() << TypesFloat() << R"(
%v4float = OpTypeVector %float 4
%rtelem = OpTypeStruct %v4float %v4float
%rtarr = OpTypeRuntimeArray %rtelem
%ssbo_s = OpTypeStruct %int %int %rtarr
%var_ty = OpTypePointer Uniform %ssbo_s
%ptr_ty = OpTypePointer Uniform %float
%var = OpVariable %var_ty Uniform
%int_1 = OpConstant %int 1
%int_2 = OpConstant %int 2
%i = OpUndef %int
%j = OpUndef %int
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %int_0 = OpConstant %int 0
; CHECK-DAG: %int_3 = OpConstant %int 3
; CHECK-DAG: %[[intmax:\w+]] = OpConstant %int 2147483647
; CHECK: OpLabel
; CHECK: %[[arrlen:\w+]] = OpArrayLength %uint %var 2
; CHECK: %[[max:\w+]] = OpISub %int %[[arrlen]] %int_1
; CHECK: %[[smin:\w+]] = OpExtInst %int %[[GLSLSTD450]] UMin %[[max]] %[[intmax]]
; CHECK: %[[clamp_i:\w+]] = OpExtInst %int %[[GLSLSTD450]] SClamp %i %int_0 %[[smin]]
; CHECK: %[[clamp_j:\w+]] = OpExtInst %int %[[GLSLSTD450]] SClamp %j %int_0 %int_3
)" << MainPrefix()
<< ACCheck(ac, "%int_2 %i %int_1 %j",
"%int_2 %[[clamp_i]] %int_1 %[[clamp_j]]")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACArrayRTArrayStructVectorElem) {
// Now add an additional level of arrays around the Block-decorated struct.
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"i", "ssbo_s"})
<< "OpDecorate %rtarr ArrayStride 32\n"
<< DecoSSBO() << "OpMemberDecorate %rtelem 0 Offset 0\n"
<< "OpMemberDecorate %rtelem 1 Offset 16\n"
<< TypesVoid() << TypesInt() << TypesFloat() << R"(
%v4float = OpTypeVector %float 4
%rtelem = OpTypeStruct %v4float %v4float
%rtarr = OpTypeRuntimeArray %rtelem
%ssbo_s = OpTypeStruct %int %int %rtarr
%arr_size = OpConstant %int 10
%arr_ssbo = OpTypeArray %ssbo_s %arr_size
%var_ty = OpTypePointer Uniform %arr_ssbo
%ptr_ty = OpTypePointer Uniform %float
%var = OpVariable %var_ty Uniform
%int_1 = OpConstant %int 1
%int_2 = OpConstant %int 2
%int_17 = OpConstant %int 17
%i = OpUndef %int
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %[[ssbo_p:\w+]] = OpTypePointer Uniform %ssbo_s
; CHECK-DAG: %int_0 = OpConstant %int 0
; CHECK-DAG: %int_9 = OpConstant %int 9
; CHECK-DAG: %[[intmax:\w+]] = OpConstant %int 2147483647
; CHECK: OpLabel
; This access chain is manufatured only so we can compute the array length.
; Note that the %int_9 is already clamped
; CHECK: %[[ssbo_base:\w+]] = )" << ac
<< R"( %[[ssbo_p]] %var %int_9
; CHECK: %[[arrlen:\w+]] = OpArrayLength %uint %[[ssbo_base]] 2
; CHECK: %[[max:\w+]] = OpISub %int %[[arrlen]] %int_1
; CHECK: %[[smin:\w+]] = OpExtInst %int %[[GLSLSTD450]] UMin %[[max]] %[[intmax]]
; CHECK: %[[clamp_i:\w+]] = OpExtInst %int %[[GLSLSTD450]] SClamp %i %int_0 %[[smin]]
)" << MainPrefix()
<< ACCheck(ac, "%int_17 %int_2 %i %int_1 %int_2",
"%int_9 %int_2 %[[clamp_i]] %int_1 %int_2")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACSplitACArrayRTArrayStructVectorElem) {
// Split the address calculation across two access chains. Force
// the transform to walk up the access chains to find the base variable.
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"i", "j", "k", "ssbo_s", "ssbo_pty",
"rtarr_pty", "ac_ssbo", "ac_rtarr"})
<< "OpDecorate %rtarr ArrayStride 32\n"
<< DecoSSBO() << "OpMemberDecorate %rtelem 0 Offset 0\n"
<< "OpMemberDecorate %rtelem 1 Offset 16\n"
<< TypesVoid() << TypesInt() << TypesFloat() << R"(
%v4float = OpTypeVector %float 4
%rtelem = OpTypeStruct %v4float %v4float
%rtarr = OpTypeRuntimeArray %rtelem
%ssbo_s = OpTypeStruct %int %int %rtarr
%arr_size = OpConstant %int 10
%arr_ssbo = OpTypeArray %ssbo_s %arr_size
%var_ty = OpTypePointer Uniform %arr_ssbo
%ssbo_pty = OpTypePointer Uniform %ssbo_s
%rtarr_pty = OpTypePointer Uniform %rtarr
%ptr_ty = OpTypePointer Uniform %float
%var = OpVariable %var_ty Uniform
%int_1 = OpConstant %int 1
%int_2 = OpConstant %int 2
%i = OpUndef %int
%j = OpUndef %int
%k = OpUndef %int
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %int_0 = OpConstant %int 0
; CHECK-DAG: %int_9 = OpConstant %int 9
; CHECK-DAG: %int_3 = OpConstant %int 3
; CHECK-DAG: %[[intmax:\w+]] = OpConstant %int 2147483647
; CHECK: OpLabel
; CHECK: %[[clamp_i:\w+]] = OpExtInst %int %[[GLSLSTD450]] SClamp %i %int_0 %int_9
; CHECK: %ac_ssbo = )" << ac
<< R"( %ssbo_pty %var %[[clamp_i]]
; CHECK: %ac_rtarr = )"
<< ac << R"( %rtarr_pty %ac_ssbo %int_2
; This is the interesting bit. This array length is needed for an OpAccessChain
; computing %ac, but the algorithm had to track back through %ac_rtarr's
; definition to find the base pointer %ac_ssbo.
; CHECK: %[[arrlen:\w+]] = OpArrayLength %uint %ac_ssbo 2
; CHECK: %[[max:\w+]] = OpISub %int %[[arrlen]] %int_1
; CHECK: %[[smin:\w+]] = OpExtInst %int %[[GLSLSTD450]] UMin %[[max]] %[[intmax]]
; CHECK: %[[clamp_j:\w+]] = OpExtInst %int %[[GLSLSTD450]] SClamp %j %int_0 %[[smin]]
; CHECK: %[[clamp_k:\w+]] = OpExtInst %int %[[GLSLSTD450]] SClamp %k %int_0 %int_3
; CHECK: %ac = )" << ac
<< R"( %ptr_ty %ac_rtarr %[[clamp_j]] %int_1 %[[clamp_k]]
; CHECK-NOT: AccessChain
)" << MainPrefix()
<< "%ac_ssbo = " << ac << " %ssbo_pty %var %i\n"
<< "%ac_rtarr = " << ac << " %rtarr_pty %ac_ssbo %int_2\n"
<< "%ac = " << ac << " %ptr_ty %ac_rtarr %j %int_1 %k\n"
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest,
ACSplitACArrayRTArrayStructVectorElemAcrossBasicBlocks) {
// Split the address calculation across two access chains. Force
// the transform to walk up the access chains to find the base variable.
// This time, put the different access chains in different basic blocks.
// This is an integrity check to ensure that we keep the instruction-to-block
// mapping consistent.
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"i", "j", "k", "bb1", "bb2", "ssbo_s",
"ssbo_pty", "rtarr_pty", "ac_ssbo",
"ac_rtarr"})
<< "OpDecorate %rtarr ArrayStride 32\n"
<< DecoSSBO() << "OpMemberDecorate %rtelem 0 Offset 0\n"
<< "OpMemberDecorate %rtelem 1 Offset 16\n"
<< TypesVoid() << TypesInt() << TypesFloat() << R"(
%v4float = OpTypeVector %float 4
%rtelem = OpTypeStruct %v4float %v4float
%rtarr = OpTypeRuntimeArray %rtelem
%ssbo_s = OpTypeStruct %int %int %rtarr
%arr_size = OpConstant %int 10
%arr_ssbo = OpTypeArray %ssbo_s %arr_size
%var_ty = OpTypePointer Uniform %arr_ssbo
%ssbo_pty = OpTypePointer Uniform %ssbo_s
%rtarr_pty = OpTypePointer Uniform %rtarr
%ptr_ty = OpTypePointer Uniform %float
%var = OpVariable %var_ty Uniform
%int_1 = OpConstant %int 1
%int_2 = OpConstant %int 2
%i = OpUndef %int
%j = OpUndef %int
%k = OpUndef %int
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %int_0 = OpConstant %int 0
; CHECK-DAG: %int_9 = OpConstant %int 9
; CHECK-DAG: %int_3 = OpConstant %int 3
; CHECK-DAG: %[[intmax:\w+]] = OpConstant %int 2147483647
; CHECK: OpLabel
; CHECK: %[[clamp_i:\w+]] = OpExtInst %int %[[GLSLSTD450]] SClamp %i %int_0 %int_9
; CHECK: %ac_ssbo = )" << ac
<< R"( %ssbo_pty %var %[[clamp_i]]
; CHECK: %bb1 = OpLabel
; CHECK: %ac_rtarr = )"
<< ac << R"( %rtarr_pty %ac_ssbo %int_2
; CHECK: %bb2 = OpLabel
; This is the interesting bit. This array length is needed for an OpAccessChain
; computing %ac, but the algorithm had to track back through %ac_rtarr's
; definition to find the base pointer %ac_ssbo.
; CHECK: %[[arrlen:\w+]] = OpArrayLength %uint %ac_ssbo 2
; CHECK: %[[max:\w+]] = OpISub %int %[[arrlen]] %int_1
; CHECK: %[[smin:\w+]] = OpExtInst %int %[[GLSLSTD450]] UMin %[[max]] %[[intmax]]
; CHECK: %[[clamp_j:\w+]] = OpExtInst %int %[[GLSLSTD450]] SClamp %j %int_0 %[[smin]]
; CHECK: %[[clamp_k:\w+]] = OpExtInst %int %[[GLSLSTD450]] SClamp %k %int_0 %int_3
; CHECK: %ac = )" << ac
<< R"( %ptr_ty %ac_rtarr %[[clamp_j]] %int_1 %[[clamp_k]]
; CHECK-NOT: AccessChain
)" << MainPrefix()
<< "%ac_ssbo = " << ac << " %ssbo_pty %var %i\n"
<< "OpBranch %bb1\n%bb1 = OpLabel\n"
<< "%ac_rtarr = " << ac << " %rtarr_pty %ac_ssbo %int_2\n"
<< "OpBranch %bb2\n%bb2 = OpLabel\n"
<< "%ac = " << ac << " %ptr_ty %ac_rtarr %j %int_1 %k\n"
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, bug3813) {
// This shader comes from Dawn's
// TextureViewSamplingTest.TextureCubeMapOnWholeTexture, converted from GLSL
// by glslang.
// The pass was inserting a signed 32-bit int type, but not correctly marking
// the shader as changed.
std::string shader = R"(
; SPIR-V
; Version: 1.0
; Generator: Google Shaderc over Glslang; 10
; Bound: 46
; Schema: 0
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %4 "main" %12 %29
OpExecutionMode %4 OriginUpperLeft
OpSource GLSL 450
OpSourceExtension "GL_GOOGLE_cpp_style_line_directive"
OpSourceExtension "GL_GOOGLE_include_directive"
OpName %4 "main"
OpName %8 "sc"
OpName %12 "texCoord"
OpName %21 "tc"
OpName %29 "fragColor"
OpName %32 "texture0"
OpName %36 "sampler0"
OpDecorate %12 Location 0
OpDecorate %29 Location 0
OpDecorate %32 DescriptorSet 0
OpDecorate %32 Binding 1
OpDecorate %36 DescriptorSet 0
OpDecorate %36 Binding 0
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%6 = OpTypeFloat 32
%7 = OpTypePointer Function %6
%9 = OpConstant %6 2
%10 = OpTypeVector %6 2
%11 = OpTypePointer Input %10
%12 = OpVariable %11 Input
%13 = OpTypeInt 32 0
%14 = OpConstant %13 0
%15 = OpTypePointer Input %6
%19 = OpConstant %6 1
%22 = OpConstant %13 1
%27 = OpTypeVector %6 4
%28 = OpTypePointer Output %27
%29 = OpVariable %28 Output
%30 = OpTypeImage %6 Cube 0 0 0 1 Unknown
%31 = OpTypePointer UniformConstant %30
%32 = OpVariable %31 UniformConstant
%34 = OpTypeSampler
%35 = OpTypePointer UniformConstant %34
%36 = OpVariable %35 UniformConstant
%38 = OpTypeSampledImage %30
%43 = OpTypeVector %6 3
%4 = OpFunction %2 None %3
%5 = OpLabel
%8 = OpVariable %7 Function
%21 = OpVariable %7 Function
%16 = OpAccessChain %15 %12 %14
%17 = OpLoad %6 %16
%18 = OpFMul %6 %9 %17
%20 = OpFSub %6 %18 %19
OpStore %8 %20
%23 = OpAccessChain %15 %12 %22
%24 = OpLoad %6 %23
%25 = OpFMul %6 %9 %24
%26 = OpFSub %6 %25 %19
OpStore %21 %26
%33 = OpLoad %30 %32
%37 = OpLoad %34 %36
%39 = OpSampledImage %38 %33 %37
%40 = OpLoad %6 %21
%41 = OpLoad %6 %8
%42 = OpFNegate %6 %41
%44 = OpCompositeConstruct %43 %19 %40 %42
%45 = OpImageSampleImplicitLod %27 %39 %44
OpStore %29 %45
OpReturn
OpFunctionEnd
)";
std::string expected = R"(OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %main "main" %texCoord %fragColor
OpExecutionMode %main OriginUpperLeft
OpSource GLSL 450
OpSourceExtension "GL_GOOGLE_cpp_style_line_directive"
OpSourceExtension "GL_GOOGLE_include_directive"
OpName %main "main"
OpName %sc "sc"
OpName %texCoord "texCoord"
OpName %tc "tc"
OpName %fragColor "fragColor"
OpName %texture0 "texture0"
OpName %sampler0 "sampler0"
OpDecorate %texCoord Location 0
OpDecorate %fragColor Location 0
OpDecorate %texture0 DescriptorSet 0
OpDecorate %texture0 Binding 1
OpDecorate %sampler0 DescriptorSet 0
OpDecorate %sampler0 Binding 0
%void = OpTypeVoid
%10 = OpTypeFunction %void
%float = OpTypeFloat 32
%_ptr_Function_float = OpTypePointer Function %float
%float_2 = OpConstant %float 2
%v2float = OpTypeVector %float 2
%_ptr_Input_v2float = OpTypePointer Input %v2float
%texCoord = OpVariable %_ptr_Input_v2float Input
%uint = OpTypeInt 32 0
%uint_0 = OpConstant %uint 0
%_ptr_Input_float = OpTypePointer Input %float
%float_1 = OpConstant %float 1
%uint_1 = OpConstant %uint 1
%v4float = OpTypeVector %float 4
%_ptr_Output_v4float = OpTypePointer Output %v4float
%fragColor = OpVariable %_ptr_Output_v4float Output
%23 = OpTypeImage %float Cube 0 0 0 1 Unknown
%_ptr_UniformConstant_23 = OpTypePointer UniformConstant %23
%texture0 = OpVariable %_ptr_UniformConstant_23 UniformConstant
%25 = OpTypeSampler
%_ptr_UniformConstant_25 = OpTypePointer UniformConstant %25
%sampler0 = OpVariable %_ptr_UniformConstant_25 UniformConstant
%27 = OpTypeSampledImage %23
%v3float = OpTypeVector %float 3
%int = OpTypeInt 32 1
%main = OpFunction %void None %10
%29 = OpLabel
%sc = OpVariable %_ptr_Function_float Function
%tc = OpVariable %_ptr_Function_float Function
%30 = OpAccessChain %_ptr_Input_float %texCoord %uint_0
%31 = OpLoad %float %30
%32 = OpFMul %float %float_2 %31
%33 = OpFSub %float %32 %float_1
OpStore %sc %33
%34 = OpAccessChain %_ptr_Input_float %texCoord %uint_1
%35 = OpLoad %float %34
%36 = OpFMul %float %float_2 %35
%37 = OpFSub %float %36 %float_1
OpStore %tc %37
%38 = OpLoad %23 %texture0
%39 = OpLoad %25 %sampler0
%40 = OpSampledImage %27 %38 %39
%41 = OpLoad %float %tc
%42 = OpLoad %float %sc
%43 = OpFNegate %float %42
%44 = OpCompositeConstruct %v3float %float_1 %41 %43
%45 = OpImageSampleImplicitLod %v4float %40 %44
OpStore %fragColor %45
OpReturn
OpFunctionEnd
)";
SinglePassRunAndCheck<GraphicsRobustAccessPass>(shader, expected, false,
true);
}
// TODO(dneto): Test access chain index wider than 64 bits?
// TODO(dneto): Test struct access chain index wider than 64 bits?
// TODO(dneto): OpImageTexelPointer
// - all Dim types: 1D 2D Cube 3D Rect Buffer
// - all Dim types that can be arrayed: 1D 2D 3D
// - sample index: set to 0 if not multisampled
// - Dim (2D, Cube Rect} with multisampling
// -1 0 max excess
// TODO(dneto): Test OpImageTexelPointer with coordinate component index other
// than 32 bits.
} // namespace
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