[PATCH v3 2/9] tests: Test packoffset().

[Francisco Casas]

From: Francisco Casas

---
 tests/cbuffer.shader_test | 339 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 339 insertions(+)

diff --git a/tests/cbuffer.shader_test b/tests/cbuffer.shader_test
index d60132ea..7fa787d9 100644
--- a/tests/cbuffer.shader_test
+++ b/tests/cbuffer.shader_test
@@ -93,3 +93,342 @@ uniform 12 float4 12.0 13.0 14.0 15.0
 draw quad
 probe all rgba (0.0, 4.0, 5.0, 6.0)

+
+[pixel shader fail]
+// Elements cannot overlap if buffer is used.
+cbuffer buffer
+{
+    float c : packoffset(c0);
+    float4 a[2] : packoffset(c1);
+    float4 b[2] : packoffset(c2);
+}
+
+float4 main() : sv_target
+{
+    return c;
+}
+
+
+[pixel shader todo]
+// Elements can overlap if buffer is not used.
+cbuffer buffer
+{
+    float4 a[2] : packoffset(c1);
+    float4 b[2] : packoffset(c2);
+}
+
+float4 main() : sv_target
+{
+    return 0;
+}
+
+
+[pixel shader todo]
+cbuffer buffer
+{
+    float4 a : packoffset(c1);
+    float4 b : packoffset(c2);
+}
+
+float4 main() : sv_target
+{
+    return 100 * a + b;
+}
+
+[test]
+uniform 0 float4 1.0 2.0 3.0 4.0
+uniform 4 float4 5.0 6.0 7.0 8.0
+uniform 8 float4 9.0 10.0 11.0 12.0
+todo draw quad
+todo probe all rgba (509, 610, 711, 812)
+
+
+[pixel shader todo]
+struct apple
+{
+    float2 a;
+    float b;
+    float4 c;
+};
+
+cbuffer buffer
+{
+    float4 foo : packoffset(c3);
+    struct apple bar : packoffset(c1);
+}
+
+float4 main() : sv_target
+{
+    return 1000 * foo + 100 * float4(bar.a, 0, 0) + 10 * float4(bar.b, 0, 0, 0) + bar.c;
+}
+
+[test]
+uniform 0 float4 0.0 1.0 2.0 3.0
+uniform 4 float4 4.0 5.0 6.0 7.0
+uniform 8 float4 8.0 9.0 10.0 11.0
+uniform 12 float4 12.0 13.0 14.0 15.0
+todo draw quad
+todo probe all rgba (12468.0, 13509.0, 14010.0, 15011.0)
+
+
+[pixel shader todo]
+cbuffer buffer
+{
+    float2 c : packoffset(c0.y);
+}
+
+float4 main() : sv_target
+{
+    return float4(c, c);
+}
+
+[test]
+uniform 0 float4 1.0 2.0 3.0 4.0
+todo draw quad
+todo probe all rgba (2.0, 3.0, 2.0, 3.0)
+
+
+[pixel shader fail]
+// Elements must respect register boundaries.
+cbuffer buffer
+{
+    float4 c : packoffset(c0.z);
+}
+
+float4 main() : sv_target
+{
+    return 0;
+}
+
+
+[pixel shader fail]
+// Matrices must be aligned.
+cbuffer buffer
+{
+    float1x1 m : packoffset(c0.y);
+}
+
+float4 main() : sv_target
+{
+    return 0;
+}
+
+
+[pixel shader fail]
+// Arrays must be aligned.
+cbuffer buffer
+{
+    float a[1] : packoffset(c0.y);
+}
+
+float4 main() : sv_target
+{
+    return 0;
+}
+
+
+[pixel shader fail]
+// Structs must be aligned.
+struct apple
+{
+    float p;
+};
+
+cbuffer buffer
+{
+    struct apple a : packoffset(c0.y);
+}
+
+float4 main() : sv_target
+{
+    return 0;
+}
+
+
+[pixel shader fail]
+// Invalid offset on unused buffer.
+cbuffer buffer
+{
+    float3 a : packoffset(c0.z);
+}
+
+float4 main() : sv_target
+{
+    return 0;
+}
+
+
+[pixel shader fail]
+// Invalid offset on unused variable.
+cbuffer buffer
+{
+    float a : packoffset(c0);
+    float3 b : packoffset(c0.z);
+}
+
+float4 main() : sv_target
+{
+    return a;
+}
+
+
+[pixel shader todo]
+cbuffer buffer
+{
+    float4 a : packoffset(c1);
+    float1 b : packoffset(c0);
+    float1 c : packoffset(c0.y);
+}
+
+float4 main() : sv_target
+{
+    return 100 * a + 10 * b + c;
+}
+
+[test]
+uniform 0 float 1.0
+uniform 1 float 2.0
+uniform 4 float4 5.0 6.0 7.0 8.0
+todo draw quad
+todo probe all rgba (512.0, 612.0, 712.0, 812.0)
+
+
+[pixel shader fail]
+// packoffset cannot be used unless all elements use it.
+cbuffer buffer
+{
+    float4 a : packoffset(c0);
+    float4 b;
+}
+
+float4 main() : sv_target
+{
+    return a + b;
+}
+
+
+[pixel shader todo]
+cbuffer buffer
+{
+    float2 c : packoffset(c0.b);
+}
+
+float4 main() : sv_target
+{
+    return float4(c, c);
+}
+
+[test]
+uniform 0 float4 1.0 2.0 3.0 4.0
+todo draw quad
+todo probe all rgba (3.0, 4.0, 3.0, 4.0)
+
+
+[pixel shader fail]
+cbuffer buffer
+{
+    float2 c : packoffset(c0.xy);
+}
+
+float4 main() : sv_target
+{
+    return 0;
+}
+
+
+[pixel shader fail]
+cbuffer buffer
+{
+    float4x4 mat : packoffset(c0._m00);
+}
+
+float4 main() : sv_target
+{
+    return 0;
+}
+
+
+[pixel shader fail]
+cbuffer buffer
+{
+    float4 a : packoffset(c0._m00);
+}
+
+float4 main() : sv_target
+{
+    return 0;
+}
+
+
+[pixel shader fail]
+cbuffer buffer
+{
+    float2 c : packoffset(c0.xz);
+}
+
+float4 main() : sv_target
+{
+    return 0;
+}
+
+
+% packoffset cannot be used outside a constant buffer.
+[pixel shader fail]
+float4 a : packoffset(c0);
+
+float4 main() : sv_target
+{
+    return 0;
+}
+
+[pixel shader fail]
+float4 foo(float4 a : packoffset(c0))
+{
+    return a;
+}
+
+float4 main() : sv_target
+{
+    return 0;
+}
+
+[pixel shader fail]
+float4 foo(float4 a) : packoffset(c0)
+{
+    return a;
+}
+
+float4 main() : sv_target
+{
+    return 0;
+}
+
+[pixel shader fail]
+struct apple
+{
+    float4 a : packoffset(c0);
+};
+
+cbuffer buffer
+{
+    struct apple a;
+}
+
+float4 main() : sv_target
+{
+    return 0;
+}
+
+[pixel shader fail]
+cbuffer buffer
+{
+    struct
+    {
+        float4 a : packoffset(c0);
+    } s;
+}
+
+float4 main() : sv_target
+{
+    return 0;
+}