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//TEST:SIMPLE(filecheck=CHK): -allow-glsl -target spirv -entry computeMain
// Using groupshared variables
groupshared float4 gsUninitialized;
float use_undefined_gs()
{
//CHK-DAG: ([[# @LINE + 1]]): warning 41017: use of uninitialized global variable 'gsUninitialized'
return gsUninitialized.x;
}
// Using static variables
static const float cexprInitialized = 1.0f;
static float writtenNever;
static float writtenLater;
// OK
float use_initialized_static()
{
return cexprInitialized;
}
// Should detect this and treat it as a store
void write_to_later()
{
writtenLater = 1.0f;
}
float use_never_written()
{
//CHK-DAG: ([[# @LINE + 1]]): warning 41017: use of uninitialized global variable 'writtenNever'
return writtenNever;
}
// OK because of prior store
float use_later_writte()
{
return writtenLater;
}
// Varying inputs never warn
layout(location = 0) in vec4 data;
vec4 glsl_layout_in_ok()
{
return data;
}
// Layout outputs should still be written to at some point
layout(location = 1) out vec4 x;
vec4 glsl_layout_out_undefined()
{
//CHK-DAG: ([[# @LINE + 1]]): warning 41017: use of uninitialized global variable 'x'
return x;
}
layout(location = 2) out vec4 y;
void glsl_layout_out_store(vec4 data)
{
// Written to here...
y = data;
}
vec4 glsl_layout_out_ok()
{
// ...so read here is treated as OK
return y;
}
//CHK-NOT: warning 41017
[Shader("compute")]
[NumThreads(4, 1, 1)]
void computeMain(int3 dispatchThreadID : SV_DispatchThreadID)
{
}
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