Ethan Lee : tests: Add a test for SampleGrad() method.

[Alexandre Julliard]

Module: vkd3d
Branch: master
Commit: c3f10fe2712c35317eab4bf3b49e471fda90cfde
URL:    https://gitlab.winehq.org/wine/vkd3d/-/commit/c3f10fe2712c35317eab4bf3b49e47...

Author: Ethan Lee <flibitijibibo(a)gmail.com>
Date:   Tue May  2 21:26:09 2023 -0400

tests: Add a test for SampleGrad() method.

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

---

 Makefile.am                   |  1 +
 tests/sample-grad.shader_test | 36 ++++++++++++++++++++++++++++++++++++
 2 files changed, 37 insertions(+)

diff --git a/Makefile.am b/Makefile.am
index 8db1bf8c..0a61365d 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -158,6 +158,7 @@ vkd3d_shader_tests = \
 	tests/return.shader_test \
 	tests/round.shader_test \
 	tests/sample-bias.shader_test \
+	tests/sample-grad.shader_test \
 	tests/sample-level.shader_test \
 	tests/sampler.shader_test \
 	tests/sampler-offset.shader_test \
diff --git a/tests/sample-grad.shader_test b/tests/sample-grad.shader_test
new file mode 100644
index 00000000..db509730
--- /dev/null
+++ b/tests/sample-grad.shader_test
@@ -0,0 +1,36 @@
+[require]
+shader model >= 4.0
+
+[sampler 0]
+filter linear linear linear
+address clamp clamp clamp
+
+[texture 0]
+size (2, 2)
+levels 2
+
+1.0 0.0 1.0 0.0     1.0 0.0 1.0 0.0
+1.0 0.0 1.0 0.0     1.0 0.0 1.0 0.0
+
+0.0 0.0 1.0 0.0
+
+[pixel shader todo]
+sampler s;
+Texture2D t;
+uniform float4 grad;
+
+float4 main() : sv_target
+{
+    return t.SampleGrad(s, float2(0.5, 0.5), grad.xy, grad.zw);
+}
+
+[test]
+uniform 0 float4 0.0 0.0 0.0 0.0
+todo draw quad
+todo probe all rgba (1.0, 0.0, 1.0, 0.0)
+uniform 0 float4 1.0 1.0 1.0 1.0
+todo draw quad
+todo probe all rgba (0.0, 0.0, 1.0, 0.0)
+uniform 0 float4 2.0 2.0 2.0 2.0
+todo draw quad
+todo probe all rgba (0.0, 0.0, 1.0, 0.0)