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Fixing bug in OpAccessChain validation code.

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The validation code for OpAccessChain was missing OpTypeRuntimeArray as
a possible type that can be indexed into.

This was caught by running the validator on VKCTS.

Also adding unit tests for it.
This commit is contained in:
Ehsan Nasiri 2016-12-05 15:11:51 -05:00 committed by David Neto
parent 1f6123fa5f
commit aadf696fce
2 changed files with 37 additions and 9 deletions
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7
source/validate_id.cpp
View File

@ -1264,9 +1264,10 @@ bool idUsage::isValid<SpvOpAccessChain>(const spv_instruction_t* inst,
switch (typePointedTo->opcode()) {
case SpvOpTypeMatrix:
case SpvOpTypeVector:
case SpvOpTypeArray: {
// In OpTypeMatrix, OpTypeArray, and OpTypeVector, word 2 is the
// Element Type.
case SpvOpTypeArray:
case SpvOpTypeRuntimeArray: {
// In OpTypeMatrix, OpTypeVector, OpTypeArray, and OpTypeRuntimeArray,
// word 2 is the Element Type.
typePointedTo = module_.FindDef(typePointedTo->word(2));
break;
}

39
test/val/val_id_test.cpp
View File

@ -1814,8 +1814,10 @@ string opAccessChainSpirvSetup = R"(
; uniform blockName {
; S s;
; bool cond;
; RunTimeArray arr;
; }
%f32arr = OpTypeRuntimeArray %float
%bool = OpTypeBool
%v4float = OpTypeVector %float 4
%array5_mat4x3 = OpTypeArray %mat4x3 %int_5
@ -1824,7 +1826,7 @@ string opAccessChainSpirvSetup = R"(
%_ptr_Function_vec4 = OpTypePointer Function %v4float
%_ptr_Uniform_vec4 = OpTypePointer Uniform %v4float
%struct_s = OpTypeStruct %bool %array5_vec4 %int %array5_mat4x3
%struct_blockName = OpTypeStruct %struct_s %bool
%struct_blockName = OpTypeStruct %struct_s %bool %f32arr
%_ptr_Uniform_blockName = OpTypePointer Uniform %struct_blockName
%_ptr_Uniform_struct_s = OpTypePointer Uniform %struct_s
%_ptr_Uniform_array5_mat4x3 = OpTypePointer Uniform %array5_mat4x3
@ -1857,7 +1859,7 @@ OpFunctionEnd
CompileSuccessfully(spirv);
EXPECT_EQ(SPV_ERROR_INVALID_ID, ValidateInstructions());
EXPECT_THAT(getDiagnosticString(),
HasSubstr("The Result Type of OpAccessChain <id> '35' must be "
HasSubstr("The Result Type of OpAccessChain <id> '36' must be "
"OpTypePointer. Found OpTypeFloat."));
}
@ -2010,10 +2012,10 @@ OpFunctionEnd
"indexes still remain to be traversed."));
}
// Invalid: Trying to find index 2 of the struct that has only 2 members.
// Invalid: Trying to find index 3 of the struct that has only 3 members.
TEST_F(ValidateIdWithMessage, OpAccessChainStructIndexOutOfBoundBad) {
string spirv = kGLSL450MemoryModel + opAccessChainSpirvSetup + R"(
%entry = OpAccessChain %_ptr_Uniform_float %blockName_var %int_2 %int_2 %int_2
%entry = OpAccessChain %_ptr_Uniform_float %blockName_var %int_3 %int_2 %int_2
OpReturn
OpFunctionEnd
)";
@ -2021,8 +2023,8 @@ OpFunctionEnd
EXPECT_EQ(SPV_ERROR_INVALID_ID, ValidateInstructions());
EXPECT_THAT(getDiagnosticString(),
HasSubstr("Index is out of bound: OpAccessChain can not find "
"index 2 into the structure <id> '25'. This structure "
"has 2 members. Largest valid index is 1."));
"index 3 into the structure <id> '26'. This structure "
"has 3 members. Largest valid index is 2."));
}
// Valid: Tests that we can index into Struct, Array, Matrix, and Vector!
@ -2046,6 +2048,31 @@ OpFunctionEnd
EXPECT_EQ(SPV_SUCCESS, ValidateInstructions());
}
// Valid: Access an element of OpTypeRuntimeArray.
TEST_F(ValidateIdWithMessage, OpAccessChainIndexIntoRuntimeArrayGood) {
string spirv = kGLSL450MemoryModel + opAccessChainSpirvSetup + R"(
%runtime_arr_entry = OpAccessChain %_ptr_Uniform_float %blockName_var %int_2 %int_0
OpReturn
OpFunctionEnd
)";
CompileSuccessfully(spirv);
EXPECT_EQ(SPV_SUCCESS, ValidateInstructions());
}
// Invalid: Unused index when accessing OpTypeRuntimeArray.
TEST_F(ValidateIdWithMessage, OpAccessChainIndexIntoRuntimeArrayBad) {
string spirv = kGLSL450MemoryModel + opAccessChainSpirvSetup + R"(
%runtime_arr_entry = OpAccessChain %_ptr_Uniform_float %blockName_var %int_2 %int_0 %int_1
OpReturn
OpFunctionEnd
)";
CompileSuccessfully(spirv);
EXPECT_EQ(SPV_ERROR_INVALID_ID, ValidateInstructions());
EXPECT_THAT(getDiagnosticString(),
HasSubstr("OpAccessChain reached non-composite type while "
"indexes still remain to be traversed."));
}
// Invalid: Reached scalar type before arguments to OpAccessChain finished.
TEST_F(ValidateIdWithMessage, OpAccessChainMatrixMoreArgsThanNeededBad) {
string spirv = kGLSL450MemoryModel + opAccessChainSpirvSetup + R"(