[Texture_cache] Better memory handling for devices with lower memory allocations (#233)

Means games like Minecraft Dungeons, Sea of Stars, Luigi Mansion 2, Astroneer, Alan Wake, etc are now playable.
It also cleans up the recent abi.cpp and bindless texture commits a bit.
Everything is in #ifdef ANDROID - The biggest change is CACHING_PAGEBITS = 12.
Without that the way the buffercache grows and joins buffers can cause Android to run out of memory (as you end up with just one big buffer that needs to be copied every time it grows)
Also patches up ffmpeg issues.

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/233
Co-authored-by: JPikachu <jpikachu.eden@gmail.com>
Co-committed-by: JPikachu <jpikachu.eden@gmail.com>

2 files changed, 25 insertions, 2 deletions

diff --git a/src/video_core/buffer_cache/buffer_cache.h b/src/video_core/buffer_cache/buffer_cache.h
index af237703d5..c7e287553e 100644
--- a/src/video_core/buffer_cache/buffer_cache.h
+++ b/src/video_core/buffer_cache/buffer_cache.h
@@ -50,7 +50,7 @@ BufferCache<P>::~BufferCache() = default;
 template <class P>
 void BufferCache<P>::RunGarbageCollector() {
     const bool aggressive_gc = total_used_memory >= critical_memory;
-    const u64 ticks_to_destroy = aggressive_gc ? 60 : 120;
+    const u64 ticks_to_destroy = aggressive_gc ? 60 : 150;
     int num_iterations = aggressive_gc ? 64 : 32;
     const auto clean_up = [this, &num_iterations](BufferId buffer_id) {
         if (num_iterations == 0) {
@@ -1380,6 +1380,9 @@ void BufferCache<P>::JoinOverlap(BufferId new_buffer_id, BufferId overlap_id,
     });
     new_buffer.MarkUsage(copies[0].dst_offset, copies[0].size);
     runtime.CopyBuffer(new_buffer, overlap, copies, true);
+#ifdef ANDROID
+    runtime.Finish();
+#endif
     DeleteBuffer(overlap_id, true);
 }
 
@@ -1671,7 +1674,12 @@ void BufferCache<P>::DeleteBuffer(BufferId buffer_id, bool do_not_mark) {
     }
 
     Unregister(buffer_id);
+    
+#ifdef ANDROID
+    if (!do_not_mark)
+#endif
     delayed_destruction_ring.Push(std::move(slot_buffers[buffer_id]));
+    
     slot_buffers.erase(buffer_id);
 
     if constexpr (HAS_PERSISTENT_UNIFORM_BUFFER_BINDINGS) {
diff --git a/src/video_core/buffer_cache/buffer_cache_base.h b/src/video_core/buffer_cache/buffer_cache_base.h
index 240e9f0150..3a40bbad19 100644
--- a/src/video_core/buffer_cache/buffer_cache_base.h
+++ b/src/video_core/buffer_cache/buffer_cache_base.h
@@ -156,7 +156,11 @@ template <class P>
 class BufferCache : public VideoCommon::ChannelSetupCaches<BufferCacheChannelInfo> {
     // Page size for caching purposes.
     // This is unrelated to the CPU page size and it can be changed as it seems optimal.
+#ifdef ANDROID
+    static constexpr u32 CACHING_PAGEBITS = 12;
+#else
     static constexpr u32 CACHING_PAGEBITS = 16;
+#endif
     static constexpr u64 CACHING_PAGESIZE = u64{1} << CACHING_PAGEBITS;
 
     static constexpr bool IS_OPENGL = P::IS_OPENGL;
@@ -170,9 +174,15 @@ class BufferCache : public VideoCommon::ChannelSetupCaches<BufferCacheChannelInf
     static constexpr bool SEPARATE_IMAGE_BUFFERS_BINDINGS = P::SEPARATE_IMAGE_BUFFER_BINDINGS;
     static constexpr bool USE_MEMORY_MAPS_FOR_UPLOADS = P::USE_MEMORY_MAPS_FOR_UPLOADS;
 
+#ifdef ANDROID
+    static constexpr s64 DEFAULT_EXPECTED_MEMORY = 512_MiB;
+    static constexpr s64 DEFAULT_CRITICAL_MEMORY = 1_GiB;
+    static constexpr s64 TARGET_THRESHOLD = 3_GiB;
+#else
     static constexpr s64 DEFAULT_EXPECTED_MEMORY = 512_MiB;
     static constexpr s64 DEFAULT_CRITICAL_MEMORY = 1_GiB;
     static constexpr s64 TARGET_THRESHOLD = 4_GiB;
+#endif
 
     // Debug Flags.
 
@@ -448,7 +458,12 @@ private:
     Tegra::MaxwellDeviceMemoryManager& device_memory;
 
     Common::SlotVector<Buffer> slot_buffers;
-    DelayedDestructionRing<Buffer, 8> delayed_destruction_ring;
+#ifdef ANDROID
+    static constexpr size_t TICKS_TO_DESTROY = 2;
+#else
+    static constexpr size_t TICKS_TO_DESTROY = 8;
+#endif
+    DelayedDestructionRing<Buffer, TICKS_TO_DESTROY> delayed_destruction_ring;
 
     const Tegra::Engines::DrawManager::IndirectParams* current_draw_indirect{};