matrix_elementwise_vector_cast.test

#--- source.hlsl
RWBuffer<float> In : register(u0);
RWBuffer<float> FloatMatOut : register(u1);
RWBuffer<int> IntMatOut : register(u2);

[numthreads(4,1,1)]
void main(uint GI : SV_GroupIndex) {
  float4 V = float4(In[0], In[1],In[2], In[3]);
  float2x2 M = (float2x2)V;
  int2x2  M2 = (int2x2)V;
  const uint COLS = 2;          // float2x2 => 2 rows, 2 columns
  uint row = GI / COLS;         // 0..1
  uint col = GI % COLS;         // 0..1

  FloatMatOut[GI]    = M[row][col];
  IntMatOut[GI]      = M2[row][col];
}
//--- pipeline.yaml

---
Shaders:
  - Stage: Compute
    Entry: main
    DispatchSize: [1, 1, 1]
Buffers:
  - Name: In
    Format: Float32
    Data: [ 1.1, 2.2, 3.3, 4.4]
  - Name: FloatMatOut
    Format: Float32
    FillSize: 16
  - Name: IntMatOut
    Format: Int32
    FillSize: 16
  - Name: ExpectedFloatOut
    Format: Float32
    Data: [ 1.1, 2.2, 3.3, 4.4]
  - Name: ExpectedIntOut
    Format: Int32
    Data: [ 1, 2, 3, 4 ]
Results:
  - Result: FloatMatOut
    Rule: BufferExact
    Actual: FloatMatOut
    Expected: ExpectedFloatOut
  - Result: IntMatOut
    Rule: BufferExact
    Actual: IntMatOut
    Expected: ExpectedIntOut
DescriptorSets:
  - Resources:
    - Name: In
      Kind: RWBuffer
      DirectXBinding:
        Register: 0
        Space: 0
      VulkanBinding:
        Binding: 0
    - Name: FloatMatOut
      Kind: RWBuffer
      DirectXBinding:
        Register: 1
        Space: 0
      VulkanBinding:
        Binding: 1
    - Name: IntMatOut
      Kind: RWBuffer
      DirectXBinding:
        Register: 2
        Space: 0
      VulkanBinding:
        Binding: 2
...
#--- end

# Unimplemented: https://github.com/llvm/llvm-project/issues/170538


# RUN: split-file %s %t
# RUN: %dxc_target -T cs_6_0 -Fo %t.o %t/source.hlsl
# RUN: %offloader %t/pipeline.yaml %t.o