[PATCH v8 12/12] tests/shader-runner: Add a '--dump-dxil' command line switch.

[Conor McCarthy]

From: Conor McCarthy

Dumps DXIL disassembly when shaders are compiled with dxcompiler.
---
 tests/shader_runner.c | 19 ++++++++++++++++++-
 tests/utils.h         |  3 +++
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/tests/shader_runner.c b/tests/shader_runner.c
index e61c538d1..09eb56310 100644
--- a/tests/shader_runner.c
+++ b/tests/shader_runner.c
@@ -839,8 +839,8 @@ HRESULT dxcompiler_compile_shader(enum shader_type type, const char *hlsl, ID3D1
 {
     DxcBuffer src_buf = {hlsl, strlen(hlsl), 65001};
     DxcCreateInstanceProc create_instance;
+    IDxcBlobUtf8 *errors, *disassembly;
     IDxcCompiler3 *compiler;
-    IDxcBlobUtf8 *errors;
     IDxcResult *result;
     IDxcBlob *blob;
     HRESULT hr;
@@ -920,6 +920,23 @@ HRESULT dxcompiler_compile_shader(enum shader_type type, const char *hlsl, ID3D1
         goto compiler_release;
     }

+    if (test_options.dump_dxil)
+    {
+        src_buf.Ptr = IDxcBlob_GetBufferPointer(blob);
+        src_buf.Size = IDxcBlob_GetBufferSize(blob);
+        src_buf.Encoding = 0;
+
+        if (SUCCEEDED(hr = IDxcCompiler3_Disassemble(compiler, &src_buf, &IID_IDxcResult, (void **)&result)))
+        {
+            if (SUCCEEDED(hr = IDxcResult_GetOutput(result, DXC_OUT_DISASSEMBLY, &IID_IDxcBlobUtf8, (void **)&disassembly, NULL)))
+            {
+                trace("dxcompiler disassembly:\n%s\n", IDxcBlobUtf8_GetStringPointer(disassembly));
+                IDxcBlobUtf8_Release(disassembly);
+            }
+            IDxcResult_Release(result);
+        }
+    }
+
     IDxcCompiler3_Release(compiler);
     *blob_out = (ID3D10Blob *)blob;
     return S_OK;
diff --git a/tests/utils.h b/tests/utils.h
index 670941905..8de930bd2 100644
--- a/tests/utils.h
+++ b/tests/utils.h
@@ -215,6 +215,7 @@ struct test_options
     bool enable_debug_layer;
     bool enable_gpu_based_validation;
     const char *filename;
+    bool dump_dxil;
 };

extern struct test_options test_options;
@@ -233,6 +234,8 @@ static inline void parse_args(int argc, char **argv)
             test_options.enable_debug_layer = true;
         else if (!strcmp(argv[i], "--gbv"))
             test_options.enable_gpu_based_validation = true;
+        else if (!strcmp(argv[i], "--dump-dxil"))
+            test_options.dump_dxil = true;
         else if (argv[i][0] != '-')
             test_options.filename = argv[i];
     }