1 files changed, 30 insertions, 0 deletions
diff --git a/tests/manual/rhi/shadowmap/main.frag b/tests/manual/rhi/shadowmap/main.frag
new file mode 100644
index 0000000000..8fefe2bb42
--- /dev/null
+++ b/tests/manual/rhi/shadowmap/main.frag
@@ -0,0 +1,30 @@
+#version 440
+
+layout(location = 0) in vec4 vLCVertPos;
+
+layout(location = 0) out vec4 fragColor;
+
+layout(binding = 1) uniform sampler2DShadow shadowMap;
+
+layout(std140, binding = 0) uniform buf {
+    mat4 mvp;
+    mat4 lightMvp;
+    mat4 shadowBias;
+    int useShadow;
+} ubuf;
+
+void main()
+{
+    vec4 adjustedLcVertPos = vLCVertPos;
+    adjustedLcVertPos.z -= 0.0001; // bias to avoid acne
+
+    // no textureProj, that seems to end up not doing the perspective divide for z (?)
+    vec3 v = adjustedLcVertPos.xyz / adjustedLcVertPos.w;
+    float sc = texture(shadowMap, v); // sampler is comparison enabled so compares to z
+
+    float shadowFactor = 0.2;
+    if (sc > 0 || ubuf.useShadow == 0)
+        shadowFactor = 1.0;
+
+    fragColor = vec4(0.5, 0.3 + ubuf.useShadow * 0.2, 0.7, 1.0) * shadowFactor;
+}