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Description
This SPIR-V trips the validator:
; SPIR-V
; Version: 1.0
; Generator: Khronos Glslang Reference Front End; 11
; Bound: 36
; Schema: 0
OpCapability Tessellation
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint TessellationEvaluation %main "main" %_ %FOO
OpExecutionMode %main Triangles
OpExecutionMode %main SpacingEqual
OpExecutionMode %main VertexOrderCcw
OpSource GLSL 460
OpSourceExtension "GL_EXT_nonuniform_qualifier"
OpName %main "main"
OpName %gl_PerVertex "gl_PerVertex"
OpMemberName %gl_PerVertex 0 "gl_Position"
OpMemberName %gl_PerVertex 1 "gl_PointSize"
OpMemberName %gl_PerVertex 2 "gl_ClipDistance"
OpMemberName %gl_PerVertex 3 "gl_CullDistance"
OpName %_ ""
OpName %FOO "FOO"
OpMemberDecorate %gl_PerVertex 0 BuiltIn Position
OpMemberDecorate %gl_PerVertex 1 BuiltIn PointSize
OpMemberDecorate %gl_PerVertex 2 BuiltIn ClipDistance
OpMemberDecorate %gl_PerVertex 3 BuiltIn CullDistance
OpDecorate %gl_PerVertex Block
OpDecorate %FOO Component 2
OpDecorate %FOO Location 1
%void = OpTypeVoid
%3 = OpTypeFunction %void
%float = OpTypeFloat 32
%v4float = OpTypeVector %float 4
%uint = OpTypeInt 32 0
%uint_1 = OpConstant %uint 1
%_arr_float_uint_1 = OpTypeArray %float %uint_1
%gl_PerVertex = OpTypeStruct %v4float %float %_arr_float_uint_1 %_arr_float_uint_1
%_ptr_Output_gl_PerVertex = OpTypePointer Output %gl_PerVertex
%_ = OpVariable %_ptr_Output_gl_PerVertex Output
%int = OpTypeInt 32 1
%int_0 = OpConstant %int 0
%v2float = OpTypeVector %float 2
%uint_2 = OpConstant %uint 2
%_arr_v2float_uint_2 = OpTypeArray %v2float %uint_2
%uint_32 = OpConstant %uint 32
%_arr__arr_v2float_uint_2_uint_32 = OpTypeArray %_arr_v2float_uint_2 %uint_32
%_ptr_Input__arr__arr_v2float_uint_2_uint_32 = OpTypePointer Input %_arr__arr_v2float_uint_2_uint_32
%FOO = OpVariable %_ptr_Input__arr__arr_v2float_uint_2_uint_32 Input
%_ptr_Input_v2float = OpTypePointer Input %v2float
%int_1 = OpConstant %int 1
%uint_0 = OpConstant %uint 0
%_ptr_Output_float = OpTypePointer Output %float
%main = OpFunction %void None %3
%5 = OpLabel
%24 = OpAccessChain %_ptr_Input_v2float %FOO %int_0 %int_0
%25 = OpLoad %v2float %24
%27 = OpAccessChain %_ptr_Input_v2float %FOO %int_1 %int_1
%28 = OpLoad %v2float %27
%29 = OpFAdd %v2float %25 %28
%32 = OpAccessChain %_ptr_Output_float %_ %int_0 %uint_0
%33 = OpCompositeExtract %float %29 0
OpStore %32 %33
%34 = OpAccessChain %_ptr_Output_float %_ %int_0 %uint_1
%35 = OpCompositeExtract %float %29 1
OpStore %34 %35
OpReturn
OpFunctionEnd
Reference GLSL:
#version 460
#extension GL_EXT_nonuniform_qualifier : require
layout(triangles) in;
layout(location = 1, component = 2) in vec2 FOO[][2];
void main()
{
gl_Position.xy = FOO[0][0] + FOO[1][1];
}
error: line 43: [VUID-StandaloneSpirv-Component-04924] Component decoration specified for type '18[%_arr_v2float_uint_2]' that is not a scalar or vector
%FOO = OpVariable %_ptr_Input__arr__arr_v2float_uint_2_uint_32 Input
However, the spec language says:
VUID-StandaloneSpirv-Component-04924
The Component decorations must not be used with any type that is not a scalar or vector, or an array of such a type
Vulkan spec update 1.3.245 has this line:
+ * Fix standalone SPIR-V VU 04924 to clarify components can also be arrays
+ of scalars or vectors (internal issue 3411).
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