tests: Add plane alpha test

Add a test that enables multiple planes with different alpha values.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

1 files changed, 97 insertions, 0 deletions

diff --git a/tests/kms-test-plane-alpha.py b/tests/kms-test-plane-alpha.py
new file mode 100755
index 0000000..8802bfe
--- /dev/null
+++ b/tests/kms-test-plane-alpha.py
@@ -0,0 +1,97 @@
+#!/usr/bin/python3
+# SPDX-License-Identifier: GPL-2.0-or-later
+# SPDX-FileCopyrightText: 2022 Renesas Electronics Corporation
+
+import kmstest
+import pykms
+
+class PlaneAlphaTest(kmstest.KMSTest):
+    """Test composition with multiple planes and alpha channels."""
+
+    def handle_page_flip(self, frame, time):
+        self.logger.log('Page flip complete')
+
+    def find_pipeline(self):
+        # Find a CRTC that has multiple planes with a connected connector
+        for connector in self.output_connectors():
+            # Skip disconnected connectors
+            if not connector.connected():
+                continue
+
+            # Add the connector to the map
+            for crtc in connector.get_possible_crtcs():
+                planes = []
+                for plane in self.card.planes:
+                    if plane.supports_crtc(crtc) and plane != crtc.primary_plane:
+                        planes.append(plane)
+
+                if len(planes):
+                    return crtc, connector, planes
+
+        return None, None, None
+
+    def main(self):
+        self.start('composition with alpha control')
+
+        crtc, connector, planes = self.find_pipeline()
+        if crtc is None:
+            self.skip('no suitable pipeline')
+            return
+
+        # Get the default mode
+        try:
+            mode = connector.get_default_mode()
+        except KeyError:
+            self.skip('no mode available')
+            return
+
+        self.logger.log(f'Testing connector {connector.fullname}, CRTC {crtc.id}, '
+                        f'mode {mode.name} with {len(planes)} planes '
+                        f'(P: {crtc.primary_plane.id}, O: {[plane.id for plane in planes]})')
+
+        # Create a frame buffer
+        fb = pykms.DumbFramebuffer(self.card, mode.hdisplay, mode.vdisplay, 'XR24')
+        pykms.draw_test_pattern(fb)
+
+        # Set the mode with a primary plane
+        ret = self.atomic_crtc_mode_set(crtc, connector, mode, fb)
+        if ret < 0:
+            self.fail(f'atomic mode set failed with {ret}')
+            return
+
+        req = kmstest.AtomicRequest(self)
+        req.add(crtc.primary_plane, 'alpha', '50%')
+        ret = req.commit_sync(True)
+        if ret < 0:
+            self.fail(f'failed to set alpha for primary plane: {ret}')
+            return
+
+        self.run(3)
+
+        # Add all other planes one by one
+        alpha = 20
+        offset = 100
+        for plane in planes:
+            source = kmstest.Rect(0, 0, fb.width, fb.height)
+            destination = kmstest.Rect(offset, offset, fb.width, fb.height)
+            ret = self.atomic_plane_set(plane, crtc, source, destination, fb, alpha=f'{alpha}%')
+            if ret < 0:
+                self.fail(f'atomic plane set failed with {ret}')
+                break
+
+            self.logger.log(f'Adding plane {plane.id}')
+            self.run(1)
+
+            if self.flips == 0:
+                self.fail('No page flip registered')
+                break
+
+            alpha = min(alpha + 20, 100)
+            offset += 50
+
+        else:
+            self.success()
+
+        self.atomic_crtc_disable(crtc)
+
+PlaneAlphaTest().execute()