[android, tu] Getting performance improvements gated due to keeping older drivers support (kill A650 please).

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/BooleanSetting.kt

@@ -25,6 +25,7 @@ enum class BooleanSetting(override val key: String) : AbstractBooleanSetting {
     RENDERER_ASYNCHRONOUS_SHADERS("use_asynchronous_shaders"),
     RENDERER_REACTIVE_FLUSHING("use_reactive_flushing"),
     ENABLE_BUFFER_HISTORY("enable_buffer_history"),
+    USE_OPTIMIZED_VERTEX_BUFFERS("use_optimized_vertex_buffers"),
     SYNC_MEMORY_OPERATIONS("sync_memory_operations"),
     BUFFER_REORDER_DISABLE("disable_buffer_reorder"),
     RENDERER_DEBUG("debug"),

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/view/SettingsItem.kt

@@ -795,6 +795,13 @@ abstract class SettingsItem(
                     descriptionId = R.string.enable_buffer_history_description
                 )
             )
+            put(
+                SwitchSetting(
+                    BooleanSetting.USE_OPTIMIZED_VERTEX_BUFFERS,
+                    titleId = R.string.use_optimized_vertex_buffers,
+                    descriptionId = R.string.use_optimized_vertex_buffers_description
+                )
+            )
             put(
                 SwitchSetting(
                     BooleanSetting.SYNC_MEMORY_OPERATIONS,

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/ui/SettingsFragmentPresenter.kt

@@ -278,6 +278,7 @@ class SettingsFragmentPresenter(
             add(BooleanSetting.RENDERER_FORCE_MAX_CLOCK.key)
             add(BooleanSetting.RENDERER_REACTIVE_FLUSHING.key)
             add(BooleanSetting.ENABLE_BUFFER_HISTORY.key)
+            add(BooleanSetting.USE_OPTIMIZED_VERTEX_BUFFERS.key)
 
             add(HeaderSetting(R.string.hacks))
 

src/android/app/src/main/res/values/strings.xml

@@ -500,7 +500,8 @@
     <string name="renderer_reactive_flushing_description">Improves rendering accuracy in some games at the cost of performance.</string>
     <string name="enable_buffer_history">Enable buffer history</string>
     <string name="enable_buffer_history_description">Enables access to previous buffer states. This option may improve rendering quality and performance consistency in some games.</string>
-
+    <string name="use_optimized_vertex_buffers">Optimized Vertex Buffers</string>
+    <string name="use_optimized_vertex_buffers_description">Enables optimized vertex buffer binding for improved performance. Requires Mesa 26.0+ Turnip drivers. Will crash on older drivers.</string>
 
     <string name="hacks">Hacks</string>
 

src/common/settings.h

@@ -519,6 +519,16 @@ struct Values {
                                                   true,
                                                   true};
 
+#ifdef ANDROID
+    SwitchableSetting<bool> use_optimized_vertex_buffers{linkage,
+                                                 false,
+                                                 "use_optimized_vertex_buffers",
+                                                 Category::RendererAdvanced,
+                                                 Specialization::Default,
+                                                 true,
+                                                 true};
+#endif
+
     // Renderer Hacks //
     SwitchableSetting<GpuOverclock> fast_gpu_time{linkage,
                                                   GpuOverclock::Medium,

src/video_core/buffer_cache/buffer_cache.h

@@ -805,6 +805,50 @@ void BufferCache<P>::UpdateVertexBufferSlot(u32 index, const Binding& binding) {
 
 template <class P>
 void BufferCache<P>::BindHostVertexBuffers() {
+    bool UseOptimizedVertexBuffers = Settings::values.use_optimized_vertex_buffers.GetValue();
+    if (UseOptimizedVertexBuffers) {
+        auto& flags = maxwell3d->dirty.flags;
+        u32 enabled_mask = enabled_vertex_buffers_mask;
+        HostBindings<Buffer> bindings{};
+        u32 last_index = std::numeric_limits<u32>::max();
+        const auto flush_bindings = [&]() {
+            if (bindings.buffers.empty()) {
+                return;
+            }
+            bindings.max_index = bindings.min_index + static_cast<u32>(bindings.buffers.size());
+            runtime.BindVertexBuffers(bindings);
+            bindings = HostBindings<Buffer>{};
+            last_index = std::numeric_limits<u32>::max();
+        };
+        while (enabled_mask != 0) {
+            const u32 index = std::countr_zero(enabled_mask);
+            enabled_mask &= (enabled_mask - 1);
+            const Binding& binding = VertexBufferSlot(index);
+            Buffer& buffer = slot_buffers[binding.buffer_id];
+            TouchBuffer(buffer, binding.buffer_id);
+            SynchronizeBuffer(buffer, binding.device_addr, binding.size);
+            if (!flags[Dirty::VertexBuffer0 + index]) {
+                flush_bindings();
+                continue;
+            }
+            flags[Dirty::VertexBuffer0 + index] = false;
+            const u32 stride = maxwell3d->regs.vertex_streams[index].stride;
+            const u32 offset = buffer.Offset(binding.device_addr);
+            buffer.MarkUsage(offset, binding.size);
+            if (!bindings.buffers.empty() && index != last_index + 1) {
+                flush_bindings();
+            }
+            if (bindings.buffers.empty()) {
+                bindings.min_index = index;
+            }
+            bindings.buffers.push_back(&buffer);
+            bindings.offsets.push_back(offset);
+            bindings.sizes.push_back(binding.size);
+            bindings.strides.push_back(stride);
+            last_index = index;
+        }
+        flush_bindings();
+    } else {
         HostBindings<typename P::Buffer> host_bindings;
         bool any_valid{false};
         auto& flags = maxwell3d->dirty.flags;
@@ -843,6 +887,7 @@ void BufferCache<P>::BindHostVertexBuffers() {
             runtime.BindVertexBuffers(host_bindings);
         }
     }
+}
 
 template <class P>
 void BufferCache<P>::BindHostDrawIndirectBuffers() {