[vulkan] Adjustment VK_EXT_conditional_rendering #1

src/video_core/host_shaders/resolve_conditional_render.comp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -5,16 +8,22 @@
 
 layout(local_size_x = 1) in;
 
-layout(std430, binding = 0) buffer Query {
+layout(std430, binding = 0) readonly buffer Query {
-    uvec2 initial;
+    uint data[];
-    uvec2 unknown;
-    uvec2 current;
 };
 
-layout(std430, binding = 1) buffer Result {
+layout(std430, binding = 1) writeonly buffer Result {
     uint result;
 };
 
+layout(push_constant) uniform PushConstants {
+    uint compare_to_zero;
+};
+
 void main() {
-    result = all(equal(initial, current)) ? 1 : 0;
+    if (compare_to_zero != 0u) {
+        result = (data[0] != 0u && data[1] != 0u) ? 1u : 0u;
+    } else {
+        result = (data[0] == data[4] && data[1] == data[5]) ? 1u : 0u;
+    }
 }

src/video_core/query_cache/query_cache.h

@@ -412,6 +412,7 @@ bool QueryCacheBase<Traits>::AccelerateHostConditionalRendering() {
                     .found_query = nullptr,
                 };
             }
+            it_current = it_current_2;
         }
         auto* query = impl->ObtainQuery(it_current->second);
         qc_dirty |= True(query->flags & QueryFlagBits::IsHostManaged) &&

src/video_core/renderer_vulkan/vk_compute_pass.cpp

@@ -228,6 +228,10 @@ struct QueriesPrefixScanPushConstants {
     u32 accumulation_limit;
     u32 buffer_offset;
 };
+
+struct ConditionalRenderingResolvePushConstants {
+    u32 compare_to_zero;
+};
 } // Anonymous namespace
 
 ComputePass::ComputePass(const Device& device_, DescriptorPool& descriptor_pool,
@@ -413,7 +417,8 @@ ConditionalRenderingResolvePass::ConditionalRenderingResolvePass(
     const Device& device_, Scheduler& scheduler_, DescriptorPool& descriptor_pool_,
     ComputePassDescriptorQueue& compute_pass_descriptor_queue_)
     : ComputePass(device_, descriptor_pool_, INPUT_OUTPUT_DESCRIPTOR_SET_BINDINGS,
-                  INPUT_OUTPUT_DESCRIPTOR_UPDATE_TEMPLATE, INPUT_OUTPUT_BANK_INFO, nullptr,
+                  INPUT_OUTPUT_DESCRIPTOR_UPDATE_TEMPLATE, INPUT_OUTPUT_BANK_INFO,
+                  COMPUTE_PUSH_CONSTANT_RANGE<sizeof(ConditionalRenderingResolvePushConstants)>,
                   RESOLVE_CONDITIONAL_RENDER_COMP_SPV),
       scheduler{scheduler_}, compute_pass_descriptor_queue{compute_pass_descriptor_queue_} {}
 
@@ -430,7 +435,7 @@ void ConditionalRenderingResolvePass::Resolve(VkBuffer dst_buffer, VkBuffer src_
     const void* const descriptor_data{compute_pass_descriptor_queue.UpdateData()};
 
     scheduler.RequestOutsideRenderPassOperationContext();
-    scheduler.Record([this, descriptor_data](vk::CommandBuffer cmdbuf) {
+    scheduler.Record([this, descriptor_data, compare_to_zero](vk::CommandBuffer cmdbuf) {
         static constexpr VkMemoryBarrier read_barrier{
             .sType = VK_STRUCTURE_TYPE_MEMORY_BARRIER,
             .pNext = nullptr,
@@ -443,6 +448,9 @@ void ConditionalRenderingResolvePass::Resolve(VkBuffer dst_buffer, VkBuffer src_
             .srcAccessMask = VK_ACCESS_SHADER_WRITE_BIT,
             .dstAccessMask = VK_ACCESS_CONDITIONAL_RENDERING_READ_BIT_EXT,
         };
+        const ConditionalRenderingResolvePushConstants uniforms{
+            .compare_to_zero = compare_to_zero ? 1U : 0U,
+        };
         const VkDescriptorSet set = descriptor_allocator.Commit();
         device.GetLogical().UpdateDescriptorSet(set, *descriptor_template, descriptor_data);
 
@@ -450,6 +458,7 @@ void ConditionalRenderingResolvePass::Resolve(VkBuffer dst_buffer, VkBuffer src_
                                VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT, 0, read_barrier);
         cmdbuf.BindPipeline(VK_PIPELINE_BIND_POINT_COMPUTE, *pipeline);
         cmdbuf.BindDescriptorSets(VK_PIPELINE_BIND_POINT_COMPUTE, *layout, 0, set, {});
+        cmdbuf.PushConstants(*layout, VK_SHADER_STAGE_COMPUTE_BIT, uniforms);
         cmdbuf.Dispatch(1, 1, 1);
         cmdbuf.PipelineBarrier(VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT,
                                VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, 0, write_barrier);

src/video_core/renderer_vulkan/vk_query_cache.cpp

@@ -1202,16 +1202,24 @@ struct QueryCacheRuntimeImpl {
         hcr_setup.pNext = nullptr;
         hcr_setup.flags = 0;
 
-        conditional_resolve_pass = std::make_unique<ConditionalRenderingResolvePass>(
+        const bool has_conditional_rendering = device.IsExtConditionalRendering();
-            device, scheduler, descriptor_pool, compute_pass_descriptor_queue);
+        if (has_conditional_rendering) {
+            conditional_resolve_pass = std::make_unique<ConditionalRenderingResolvePass>(
+                device, scheduler, descriptor_pool, compute_pass_descriptor_queue);
+        }
+
+        VkBufferUsageFlags hcr_buffer_usage =
+            VK_BUFFER_USAGE_TRANSFER_DST_BIT | VK_BUFFER_USAGE_STORAGE_BUFFER_BIT;
+        if (has_conditional_rendering) {
+            hcr_buffer_usage |= VK_BUFFER_USAGE_CONDITIONAL_RENDERING_BIT_EXT;
+        }
 
         const VkBufferCreateInfo buffer_ci = {
             .sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO,
             .pNext = nullptr,
             .flags = 0,
             .size = sizeof(u32),
-            .usage = VK_BUFFER_USAGE_TRANSFER_DST_BIT | VK_BUFFER_USAGE_STORAGE_BUFFER_BIT |
+            .usage = hcr_buffer_usage,
-                     VK_BUFFER_USAGE_CONDITIONAL_RENDERING_BIT_EXT,
             .sharingMode = VK_SHARING_MODE_EXCLUSIVE,
             .queueFamilyIndexCount = 0,
             .pQueueFamilyIndices = nullptr,
@@ -1338,15 +1346,18 @@ void QueryCacheRuntime::HostConditionalRenderingCompareValueImpl(VideoCommon::Lo
     }
 }
 
-void QueryCacheRuntime::HostConditionalRenderingCompareBCImpl(DAddr address, bool is_equal) {
+void QueryCacheRuntime::HostConditionalRenderingCompareBCImpl(DAddr address, bool is_equal,
+                                                              bool compare_to_zero) {
     VkBuffer to_resolve;
     u32 to_resolve_offset;
+    const u32 resolve_size = compare_to_zero ? 8 : 24;
     {
         std::scoped_lock lk(impl->buffer_cache.mutex);
-        static constexpr auto sync_info = VideoCommon::ObtainBufferSynchronize::NoSynchronize;
+        const auto sync_info = compare_to_zero ? VideoCommon::ObtainBufferSynchronize::FullSynchronize
+                                               : VideoCommon::ObtainBufferSynchronize::NoSynchronize;
         const auto post_op = VideoCommon::ObtainBufferOperation::DoNothing;
         const auto [buffer, offset] =
-            impl->buffer_cache.ObtainCPUBuffer(address, 24, sync_info, post_op);
+            impl->buffer_cache.ObtainCPUBuffer(address, resolve_size, sync_info, post_op);
         to_resolve = buffer->Handle();
         to_resolve_offset = static_cast<u32>(offset);
     }
@@ -1355,7 +1366,7 @@ void QueryCacheRuntime::HostConditionalRenderingCompareBCImpl(DAddr address, boo
         PauseHostConditionalRendering();
     }
     impl->conditional_resolve_pass->Resolve(*impl->hcr_resolve_buffer, to_resolve,
-                                            to_resolve_offset, false);
+                                            to_resolve_offset, compare_to_zero);
     impl->hcr_setup.buffer = *impl->hcr_resolve_buffer;
     impl->hcr_setup.offset = 0;
     impl->hcr_setup.flags = is_equal ? 0 : VK_CONDITIONAL_RENDERING_INVERTED_BIT_EXT;
@@ -1371,7 +1382,7 @@ bool QueryCacheRuntime::HostConditionalRenderingCompareValue(VideoCommon::Lookup
     if (!impl->device.IsExtConditionalRendering()) {
         return false;
     }
-    HostConditionalRenderingCompareValueImpl(object_1, false);
+    HostConditionalRenderingCompareBCImpl(object_1.address, true, true);
     return true;
 }
 
@@ -1421,6 +1432,7 @@ bool QueryCacheRuntime::HostConditionalRenderingCompareValues(VideoCommon::Looku
     const bool is_gpu_high = Settings::IsGPULevelHigh();
 
     if ((!is_gpu_high && driver_id == VK_DRIVER_ID_INTEL_PROPRIETARY_WINDOWS) || driver_id == VK_DRIVER_ID_QUALCOMM_PROPRIETARY || driver_id == VK_DRIVER_ID_ARM_PROPRIETARY || driver_id == VK_DRIVER_ID_MESA_TURNIP) {
+        EndHostConditionalRendering();
         return true;
     }
 
@@ -1437,10 +1449,12 @@ bool QueryCacheRuntime::HostConditionalRenderingCompareValues(VideoCommon::Looku
     }
 
     if (!is_gpu_high) {
+        EndHostConditionalRendering();
         return true;
     }
 
     if (!is_in_bc[0] && !is_in_bc[1]) {
+        EndHostConditionalRendering();
         return true;
     }
     HostConditionalRenderingCompareBCImpl(object_1.address, equal_check);

src/video_core/renderer_vulkan/vk_query_cache.h

@@ -63,7 +63,8 @@ public:
 
 private:
     void HostConditionalRenderingCompareValueImpl(VideoCommon::LookupData object, bool is_equal);
-    void HostConditionalRenderingCompareBCImpl(DAddr address, bool is_equal);
+    void HostConditionalRenderingCompareBCImpl(DAddr address, bool is_equal,
+                                               bool compare_to_zero = false);
     friend struct QueryCacheRuntimeImpl;
     std::unique_ptr<QueryCacheRuntimeImpl> impl;
 };

src/video_core/renderer_vulkan/vk_rasterizer.cpp

@@ -225,6 +225,7 @@ void RasterizerVulkan::PrepareDraw(bool is_indexed, Func&& draw_func) {
 
     UpdateDynamicStates();
 
+    query_cache.NotifySegment(true);
     HandleTransformFeedback();
     query_cache.CounterEnable(VideoCommon::QueryType::ZPassPixelCount64,
                               maxwell3d->regs.zpass_pixel_count_enable);
@@ -336,6 +337,7 @@ void RasterizerVulkan::DrawTexture() {
 
     UpdateDynamicStates();
 
+    query_cache.NotifySegment(true);
     query_cache.CounterEnable(VideoCommon::QueryType::ZPassPixelCount64,
                               maxwell3d->regs.zpass_pixel_count_enable);
     const auto& draw_texture_state = maxwell3d->draw_manager->GetDrawTextureState();