From: Mikko Rasa <tdb@tdb.fi>
Date: Fri, 9 Apr 2021 14:36:22 +0000 (+0300)
Subject: Test the SPIR-V backend using libspirv
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=commitdiff_plain;h=de89f7b2511908024396d24255e9e604fd5f2435

Test the SPIR-V backend using libspirv
---

diff --git a/tests/Build b/tests/Build
index 85dced18..1190e72a 100644
--- a/tests/Build
+++ b/tests/Build
@@ -8,6 +8,7 @@ package "mspgl-tests"
 	program "glsltest"
 	{
 		source "glsl";
+		require "SPIRV-Tools";
 		build_info
 		{
 			standard CXX "c++11";
diff --git a/tests/glsl/glslcompiler.cpp b/tests/glsl/glslcompiler.cpp
index 01c1fba2..35bbc8bc 100644
--- a/tests/glsl/glslcompiler.cpp
+++ b/tests/glsl/glslcompiler.cpp
@@ -1,3 +1,4 @@
+#include <spirv-tools/libspirv.hpp>
 #include <msp/core/algorithm.h>
 #include <msp/fs/dir.h>
 #include <msp/fs/utils.h>
@@ -58,6 +59,22 @@ private:
 	virtual void fail(const std::string &m) { Test::fail(m); }
 };
 
+class GlslCompilerSpirV: public Msp::Test::RegisteredTest<GlslCompilerSpirV>, private GlslCompilerHelper
+{
+private:
+	spvtools::SpirvTools spirv_tools;
+
+public:
+	GlslCompilerSpirV();
+
+	static const char *get_name() { return "GLSL to SPIR-V compilation"; }
+
+private:
+	void run_test_case(const TestCase *);
+	void diagnostic(spv_message_level_t, const char *, const spv_position_t &, const char *);
+	virtual void fail(const std::string &m) { Test::fail(m); }
+};
+
 using namespace std;
 using namespace Msp;
 
@@ -318,3 +335,41 @@ void GlslCompilerIdempotence::run_test_case(const TestCase *test_case)
 	if(j!=stages2.end())
 		fail(format("Second pass produced extra stage %s", GL::SL::Stage::get_stage_name(*j)));
 }
+
+
+GlslCompilerSpirV::GlslCompilerSpirV():
+	spirv_tools(SPV_ENV_UNIVERSAL_1_5)
+{
+	load_all_test_cases("glsl");
+	for(const auto &tc: test_cases)
+		if(tc.expect_success)
+			add(&GlslCompilerSpirV::run_test_case, &tc, tc.name);
+
+	using namespace std::placeholders;
+	spirv_tools.SetMessageConsumer(std::bind(std::mem_fn(&GlslCompilerSpirV::diagnostic), this, _1, _2, _3, _4));
+}
+
+void GlslCompilerSpirV::run_test_case(const TestCase *test_case)
+{
+	GL::SL::Compiler compiler(GL::SL::Features::latest());
+	compiler.set_source(test_case->source, "<test>");
+	compiler.compile(GL::SL::Compiler::SPIRV);
+
+	vector<UInt32> code = compiler.get_combined_spirv();
+	if(!spirv_tools.Validate(code))
+		fail("Invalid SPIR-V generated");
+}
+
+void GlslCompilerSpirV::diagnostic(spv_message_level_t level, const char *, const spv_position_t &, const char *message)
+{
+	const char *prefix;
+	switch(level)
+	{
+	case SPV_MSG_DEBUG: prefix = "debug: "; break;
+	case SPV_MSG_INFO: prefix = "info: "; break;
+	case SPV_MSG_WARNING: prefix = "warning: "; break;
+	case SPV_MSG_ERROR: prefix = "error: "; break;
+	default: prefix = "";
+	}
+	info(format("%s%s", prefix, message));
+}