Validate compute pass timestamp queries are unique

This validation existed for render passes but not for compute passes,
and it's not clear why.

Bug: dawn:1809
Change-Id: I8babb6ddf455a915f5a0c85ad1a7d741fdb467a8
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/132481
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Brandon Jones <bajones@chromium.org>
Reviewed-by: Austin Eng <enga@chromium.org>

src/dawn/native/CommandEncoder.cpp

@@ -508,6 +508,9 @@ MaybeError ValidateComputePassDescriptor(const DeviceBase* device,
     if (descriptor->timestampWriteCount > 0) {
         DAWN_ASSERT(descriptor->timestampWrites != nullptr);
 
+        // Record the query set and query index used on compute passes for validating query
+        // index overwrite.
+        QueryAvailabilityMap usedQueries;
         // TODO(https://crbug.com/dawn/1452):
         // 1. Add an enum that's TimestampLocationMask and has bit values.
         // 2. Add a function with a switch that converts from one to the other.
@@ -515,14 +518,25 @@ MaybeError ValidateComputePassDescriptor(const DeviceBase* device,
         // 4. Use it here.
         std::unordered_set<wgpu::ComputePassTimestampLocation> writtenLocations;
         for (uint32_t i = 0; i < descriptor->timestampWriteCount; ++i) {
-            DAWN_ASSERT(descriptor->timestampWrites[i].querySet != nullptr);
+            QuerySetBase* querySet = descriptor->timestampWrites[i].querySet;
-            DAWN_TRY_CONTEXT(ValidateTimestampQuery(device, descriptor->timestampWrites[i].querySet,
+            DAWN_ASSERT(querySet != nullptr);
-                                                    descriptor->timestampWrites[i].queryIndex),
+            uint32_t queryIndex = descriptor->timestampWrites[i].queryIndex;
+            DAWN_TRY_CONTEXT(ValidateTimestampQuery(device, querySet, queryIndex),
                              "validating querySet and queryIndex of timestampWrites[%u].", i);
             DAWN_TRY_CONTEXT(ValidateTimestampLocationOnComputePass(
                                  descriptor->timestampWrites[i].location, writtenLocations),
                              "validating location of timestampWrites[%u].", i);
             writtenLocations.insert(descriptor->timestampWrites[i].location);
+
+            auto checkIt = usedQueries.find(querySet);
+            DAWN_INVALID_IF(checkIt != usedQueries.end() && checkIt->second[queryIndex],
+                            "Query index %u of %s is written to twice in a compute pass.",
+                            queryIndex, querySet);
+
+            // Gets the iterator for that querySet or create a new vector of bool set to
+            // false if the querySet wasn't registered.
+            auto addIt = usedQueries.emplace(querySet, querySet->GetQueryCount()).first;
+            addIt->second[queryIndex] = true;
         }
     }
 

src/dawn/tests/end2end/QueryTests.cpp

@@ -864,35 +864,12 @@ TEST_P(TimestampQueryTests, TimestampWritesQuerySetOnComputePass) {
 
 // Test timestampWrites with query index in compute pass descriptor
 TEST_P(TimestampQueryTests, TimestampWritesQueryIndexOnComputePass) {
-    constexpr uint32_t kQueryCount = 2;
+    // Set timestampWrites with different query indexes and locations, not need test write same
+    // query index due to it's not allowed on compute pass.
+    wgpu::QuerySet querySet = CreateQuerySetForTimestamp(2);
 
-    // Set timestampWrites with different query indexes on same compute pass
+    TestTimestampWritesOnComputePass({{querySet, 0, wgpu::ComputePassTimestampLocation::Beginning},
-    {
-        wgpu::QuerySet querySet = CreateQuerySetForTimestamp(kQueryCount);
-
-        TestTimestampWritesOnComputePass(
-            {{querySet, 0, wgpu::ComputePassTimestampLocation::Beginning},
                                       {querySet, 1, wgpu::ComputePassTimestampLocation::End}});
-    }
-
-    // Set timestampWrites with same query index on same compute pass
-    {
-        wgpu::QuerySet querySet = CreateQuerySetForTimestamp(kQueryCount);
-
-        TestTimestampWritesOnComputePass(
-            {{querySet, 0, wgpu::ComputePassTimestampLocation::Beginning},
-             {querySet, 0, wgpu::ComputePassTimestampLocation::End}});
-    }
-
-    // Set timestampWrites with same query indexes on different compute pass
-    {
-        wgpu::QuerySet querySet0 = CreateQuerySetForTimestamp(kQueryCount);
-        wgpu::QuerySet querySet1 = CreateQuerySetForTimestamp(kQueryCount);
-
-        TestTimestampWritesOnComputePass(
-            {{querySet0, 0, wgpu::ComputePassTimestampLocation::Beginning}},
-            {{querySet1, 0, wgpu::ComputePassTimestampLocation::End}});
-    }
 }
 
 // Test timestampWrites with timestamp location in compute pass descriptor

src/dawn/tests/unittests/validation/QueryValidationTests.cpp

@@ -385,13 +385,13 @@ TEST_F(TimestampQueryValidationTest, TimestampWritesOnComputePass) {
         ASSERT_DEVICE_ERROR(encoder.Finish());
     }
 
-    // Success to write timestamps to the same query index twice on same compute pass
+    // Fail to write timestamps to the same query index twice on same compute pass
     {
         wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
         EncodeComputePassWithTimestampWrites(
             encoder, {{querySet, 0, wgpu::ComputePassTimestampLocation::Beginning},
                       {querySet, 0, wgpu::ComputePassTimestampLocation::End}});
-        encoder.Finish();
+        ASSERT_DEVICE_ERROR(encoder.Finish());
     }
 
     // Success to write timestamps at same location of different compute pass