rhi: metal: Add support for tessellation

Change-Id: Ie8d226a6a959aa5e78284ea72505fd26aec1e671
Reviewed-by: Andy Nichols <andy.nichols@qt.io>

1 files changed, 22 insertions, 0 deletions

diff --git a/tests/auto/gui/rhi/qrhi/data/simpletess.tesc b/tests/auto/gui/rhi/qrhi/data/simpletess.tesc
new file mode 100644
index 0000000000..e192fc77c7
--- /dev/null
+++ b/tests/auto/gui/rhi/qrhi/data/simpletess.tesc
@@ -0,0 +1,22 @@
+#version 440
+
+layout(vertices = 3) out;
+
+layout(location = 0) in vec3 inColor[];
+layout(location = 0) out vec3 outColor[];
+layout(location = 1) patch out float a_per_patch_output_variable;
+
+void main()
+{
+    if (gl_InvocationID == 0) {
+        gl_TessLevelOuter[0] = 4.0;
+        gl_TessLevelOuter[1] = 4.0;
+        gl_TessLevelOuter[2] = 4.0;
+
+        gl_TessLevelInner[0] = 4.0;
+    }
+
+    gl_out[gl_InvocationID].gl_Position = gl_in[gl_InvocationID].gl_Position;
+    outColor[gl_InvocationID] = inColor[gl_InvocationID];
+    a_per_patch_output_variable = 1.0;
+}