fix(d3d11): correct parameter in VSSetConstantBuffers1 from uavCount … (#6690)

* fix(d3d11): correct parameter in VSSetConstantBuffers1 from uavCount to cbvCount (fixes #6531)

Root cause - Incorrect parameter passing in slang-rhi

1. slang-rhi #281 - Add the correct cbvCount for setting Constant Buffer
2. Prevent render tests from overwriting reference images
    * Add missing tests/render/multiple-stage-io-locations.slang.3.expected.png

* Add more expected images from texture2d-gather

* Add new option: skipReferenceImageGeneration

For Github CI we set this to true - So we don't overwrite the expected
images

---------

Co-authored-by: Jay Kwak <82421531+jkwak-work@users.noreply.github.com>

3 files changed, 29 insertions, 8 deletions

diff --git a/tools/slang-test/options.cpp b/tools/slang-test/options.cpp
index d12a9bf30..da8702031 100644
--- a/tools/slang-test/options.cpp
+++ b/tools/slang-test/options.cpp
@@ -81,6 +81,7 @@ static bool _isSubCommand(const char* arg)
         "  -server-count <n>              Set number of test servers (default: 1)\n"
         "  -show-adapter-info             Show detailed adapter information\n"
         "  -generate-hlsl-baselines       Generate HLSL test baselines\n"
+        "  -skip-reference-image-generation Skip generating reference images for render tests\n"
         "  -emit-spirv-via-glsl           Emit SPIR-V through GLSL instead of directly\n"
         "  -expected-failure-list <file>  Specify file containing expected failures\n"
         "  -use-shared-library            Run tests in-process using shared library\n"
@@ -390,6 +391,10 @@ static bool _isSubCommand(const char* arg)
         {
             optionsOut->showAdapterInfo = true;
         }
+        else if (strcmp(arg, "-skip-reference-image-generation") == 0)
+        {
+            optionsOut->skipReferenceImageGeneration = true;
+        }
         else
         {
             stdError.print("unknown option '%s'\n", arg);
diff --git a/tools/slang-test/options.h b/tools/slang-test/options.h
index aec930e38..bd8ee5499 100644
--- a/tools/slang-test/options.h
+++ b/tools/slang-test/options.h
@@ -72,6 +72,9 @@ struct Options
     // force generation of baselines for HLSL tests
     bool generateHLSLBaselines = false;
 
+    // Skip generation of reference images for render tests, assume they already exist
+    bool skipReferenceImageGeneration = false;
+
     // Whether to skip the step of creating test devices to check if an API is actually available.
     bool skipApiDetection = false;
 
diff --git a/tools/slang-test/slang-test-main.cpp b/tools/slang-test/slang-test-main.cpp
index 51dcf79ce..3f7e41cf6 100644
--- a/tools/slang-test/slang-test-main.cpp
+++ b/tools/slang-test/slang-test-main.cpp
@@ -3863,12 +3863,19 @@ TestResult runHLSLRenderComparisonTestImpl(
     String expectedOutput;
     String actualOutput;
 
-    TestResult hlslResult =
-        doRenderComparisonTestRun(context, input, expectedArg, ".expected", &expectedOutput);
-    if (hlslResult != TestResult::Pass)
+    // Run the expected test case only if we're not skipping reference image generation
+    TestResult hlslResult = TestResult::Pass;
+    if (!context->options.skipReferenceImageGeneration)
     {
-        return hlslResult;
+        hlslResult =
+            doRenderComparisonTestRun(context, input, expectedArg, ".expected", &expectedOutput);
+        if (hlslResult != TestResult::Pass)
+        {
+            return hlslResult;
+        }
     }
+
+    // Always run the actual test case
     TestResult slangResult =
         doRenderComparisonTestRun(context, input, actualArg, ".actual", &actualOutput);
     if (slangResult != TestResult::Pass)
@@ -3881,7 +3888,12 @@ TestResult runHLSLRenderComparisonTestImpl(
         return TestResult::Pass;
     }
 
-    Slang::File::writeAllText(outputStem + ".expected", expectedOutput);
+    // Save the expected output if we generated it
+    if (!context->options.skipReferenceImageGeneration)
+    {
+        Slang::File::writeAllText(outputStem + ".expected", expectedOutput);
+    }
+
     Slang::File::writeAllText(outputStem + ".actual", actualOutput);
 
     if (hlslResult == TestResult::Fail)
@@ -3889,9 +3901,10 @@ TestResult runHLSLRenderComparisonTestImpl(
     if (slangResult == TestResult::Fail)
         return TestResult::Fail;
 
-    if (!StringUtil::areLinesEqual(
-            actualOutput.getUnownedSlice(),
-            expectedOutput.getUnownedSlice()))
+    // Compare text output only if we generated the expected output
+    if (!context->options.skipReferenceImageGeneration && !StringUtil::areLinesEqual(
+                                                              actualOutput.getUnownedSlice(),
+                                                              expectedOutput.getUnownedSlice()))
     {
         context->getTestReporter()->dumpOutputDifference(expectedOutput, actualOutput);