Ethan Lee : tests: Add a test for arrays with an expression as the index.

[Alexandre Julliard]

Module: vkd3d
Branch: master
Commit: aa17d139be999dbb2bd044d69f8258638d665896
URL:    https://gitlab.winehq.org/wine/vkd3d/-/commit/aa17d139be999dbb2bd044d69f8258...

Author: Ethan Lee <flibitijibibo(a)gmail.com>
Date:   Fri Apr 28 22:28:05 2023 -0400

tests: Add a test for arrays with an expression as the index.

Currently, the compiler requires that dereferences be HLSL_IR_CONSTANT, so that
it can compute the offset at compile time. However, scenarios such as this test
will produce a dereference with HLSL_IR_EXPR, which will generate an error.

Passing this test in particular will require adding support for SM4 relative
addressing, as well as support for non-constant indexing in general.

Signed-off-by: Ethan Lee <flibitijibibo(a)gmail.com>

---

 Makefile.am                        |  1 +
 tests/array-index-expr.shader_test | 25 +++++++++++++++++++++++++
 2 files changed, 26 insertions(+)

diff --git a/Makefile.am b/Makefile.am
index 954b0ffd..92c6d079 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -50,6 +50,7 @@ vkd3d_shader_tests = \
 	tests/arithmetic-int.shader_test \
 	tests/arithmetic-int-uniform.shader_test \
 	tests/arithmetic-uint.shader_test \
+	tests/array-index-expr.shader_test \
 	tests/array-parameters.shader_test \
 	tests/asfloat.shader_test \
 	tests/asuint.shader_test \
diff --git a/tests/array-index-expr.shader_test b/tests/array-index-expr.shader_test
new file mode 100644
index 00000000..8dda0c99
--- /dev/null
+++ b/tests/array-index-expr.shader_test
@@ -0,0 +1,25 @@
+[pixel shader todo]
+uniform float4 f[3];
+uniform float2 i;
+
+float4 main() : sv_target
+{
+    return f[i.x + i.y];
+}
+
+[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
+uniform 12 float4 0 0 0 0
+todo draw quad
+todo probe all rgba (1.0, 2.0, 3.0, 4.0)
+uniform 12 float4 1 0 0 0
+todo draw quad
+todo probe all rgba (5.0, 6.0, 7.0, 8.0)
+uniform 12 float4 0 1 0 0
+todo draw quad
+todo probe all rgba (5.0, 6.0, 7.0, 8.0)
+uniform 12 float4 1 1 0 0
+todo draw quad
+todo probe all rgba (9.0, 10.0, 11.0, 12.0)