audio: extract mix render block from update

2026-04-14 16:42:25 +08:00
parent 3e56757910
commit ee03f7035b
3 changed files with 158 additions and 100 deletions
--- a/tests/Components/test_audio_system.cpp
+++ b/tests/Components/test_audio_system.cpp
@@ -269,6 +269,32 @@ TEST(AudioSystem, ProcessAudioUsesBackendConfigSampleRateForDirectSubmission) {
    system.Shutdown();
 }

+TEST(AudioSystem, RenderAudioProducesMixedBlockWithoutBackendSubmission) {
+    AudioSystem& system = AudioSystem::Get();
+    system.Shutdown();
+
+    system.SetMasterVolume(0.5f);
+    system.SetMuted(false);
+    system.GetMasterMixer().ClearEffects();
+
+    AudioClip clip = CreateMono16Clip({16384}, 4);
+    AudioSourceComponent source;
+    source.SetSpatialize(false);
+    source.SetClip(&clip);
+    source.Play();
+
+    float buffer[1] = {};
+    system.RenderAudio(buffer, 1, 1, 4);
+
+    EXPECT_NEAR(buffer[0], 0.25f, 1e-5f);
+    EXPECT_EQ(system.GetStats().activeSources, 1u);
+    EXPECT_EQ(system.GetStats().totalSources, 1u);
+
+    source.Stop();
+    system.SetMasterVolume(1.0f);
+    system.Shutdown();
+}
+
 TEST(AudioSystem, AudioListenerComponentSerializeRoundTripPreservesSettings) {
    AudioSystem& system = AudioSystem::Get();
    system.Shutdown();