Merge pull request #3055 from greg-lunarg/limit2

Improve ResourceLimits interface to be more forward compatible

11 files changed, 47 insertions, 30 deletions

diff --git a/BUILD.bazel b/BUILD.bazel
index 12168fae..45efbd35 100644
--- a/BUILD.bazel
+++ b/BUILD.bazel
@@ -210,7 +210,7 @@ cc_library(
 cc_library(
     name = "glslang-default-resource-limits",
     srcs = ["StandAlone/ResourceLimits.cpp"],
-    hdrs = ["StandAlone/ResourceLimits.h"],
+    hdrs = ["glslang/Public/ResourceLimits.h"],
     copts = COMMON_COPTS,
     linkstatic = 1,
     deps = [":glslang"],
diff --git a/StandAlone/ResourceLimits.cpp b/StandAlone/ResourceLimits.cpp
index 1a76bf62..6e1a3d85 100644
--- a/StandAlone/ResourceLimits.cpp
+++ b/StandAlone/ResourceLimits.cpp
@@ -37,9 +37,9 @@
 #include <sstream>
 #include <cctype>
 
-#include "ResourceLimits.h"
+#include "glslang/Public/ResourceLimits.h"
 
-namespace glslang {
+TBuiltInResource Resources;
 
 const TBuiltInResource DefaultTBuiltInResource = {
     /* .MaxLights = */ 32,
@@ -529,4 +529,12 @@ void DecodeResourceLimits(TBuiltInResource* resources, char* config)
     }
 }
 
-}  // end namespace glslang
+TBuiltInResource* GetResources()
+{
+   return &Resources;
+}
+
+const TBuiltInResource* GetDefaultResources()
+{
+    return &DefaultTBuiltInResource;
+}
diff --git a/StandAlone/StandAlone.cpp b/StandAlone/StandAlone.cpp
index edde81e2..53a6b9c2 100644
--- a/StandAlone/StandAlone.cpp
+++ b/StandAlone/StandAlone.cpp
@@ -41,7 +41,7 @@
 #define _CRT_SECURE_NO_WARNINGS
 #endif
 
-#include "ResourceLimits.h"
+#include "glslang/Public/ResourceLimits.h"
 #include "Worklist.h"
 #include "DirStackFileIncluder.h"
 #include "./../glslang/Include/ShHandle.h"
@@ -149,7 +149,6 @@ bool LinkFailed = false;
 // array of unique places to leave the shader names and infologs for the asynchronous compiles
 std::vector<std::unique_ptr<glslang::TWorkItem>> WorkItems;
 
-TBuiltInResource Resources;
 std::string ConfigFile;
 
 //
@@ -158,11 +157,11 @@ std::string ConfigFile;
 void ProcessConfigFile()
 {
     if (ConfigFile.size() == 0)
-        Resources = glslang::DefaultTBuiltInResource;
+        *GetResources() = *GetDefaultResources();
 #ifndef GLSLANG_WEB
     else {
         char* configString = ReadFileData(ConfigFile.c_str());
-        glslang::DecodeResourceLimits(&Resources,  configString);
+        DecodeResourceLimits(GetResources(),  configString);
         FreeFileData(configString);
     }
 #endif
@@ -1417,7 +1416,7 @@ void CompileAndLinkShaderUnits(std::vector<ShaderCompUnit> compUnits)
 #ifndef GLSLANG_WEB
         if (Options & EOptionOutputPreprocessed) {
             std::string str;
-            if (shader->preprocess(&Resources, defaultVersion, ENoProfile, false, false, messages, &str, includer)) {
+            if (shader->preprocess(GetResources(), defaultVersion, ENoProfile, false, false, messages, &str, includer)) {
                 PutsIfNonEmpty(str.c_str());
             } else {
                 CompileFailed = true;
@@ -1428,7 +1427,7 @@ void CompileAndLinkShaderUnits(std::vector<ShaderCompUnit> compUnits)
         }
 #endif
 
-        if (! shader->parse(&Resources, defaultVersion, false, messages, includer))
+        if (! shader->parse(GetResources(), defaultVersion, false, messages, includer))
             CompileFailed = true;
 
         program.addShader(shader);
@@ -1612,7 +1611,7 @@ int singleMain()
 
 #ifndef GLSLANG_WEB
     if (Options & EOptionDumpConfig) {
-        printf("%s", glslang::GetDefaultTBuiltInResourceString().c_str());
+        printf("%s", GetDefaultTBuiltInResourceString().c_str());
         if (workList.empty())
             return ESuccess;
     }
@@ -1838,7 +1837,7 @@ void CompileFile(const char* fileName, ShHandle compiler)
     for (int i = 0; i < ((Options & EOptionMemoryLeakMode) ? 100 : 1); ++i) {
         for (int j = 0; j < ((Options & EOptionMemoryLeakMode) ? 100 : 1); ++j) {
             // ret = ShCompile(compiler, shaderStrings, NumShaderStrings, lengths, EShOptNone, &Resources, Options, (Options & EOptionDefaultDesktop) ? 110 : 100, false, messages);
-            ret = ShCompile(compiler, &shaderString, 1, nullptr, EShOptNone, &Resources, Options, (Options & EOptionDefaultDesktop) ? 110 : 100, false, messages);
+            ret = ShCompile(compiler, &shaderString, 1, nullptr, EShOptNone, GetResources(), Options, (Options & EOptionDefaultDesktop) ? 110 : 100, false, messages);
             // const char* multi[12] = { "# ve", "rsion", " 300 e", "s", "\n#err",
             //                         "or should be l", "ine 1", "string 5\n", "float glo", "bal",
             //                         ";\n#error should be line 2\n void main() {", "global = 2.3;}" };
diff --git a/StandAlone/resource_limits_c.cpp b/StandAlone/resource_limits_c.cpp
index a1f681c7..0eeac23a 100644
--- a/StandAlone/resource_limits_c.cpp
+++ b/StandAlone/resource_limits_c.cpp
@@ -26,15 +26,20 @@ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 **/
 
-#include "resource_limits_c.h"
-#include "ResourceLimits.h"
+#include "glslang/Public/resource_limits_c.h"
+#include "glslang/Public/ResourceLimits.h"
 #include <stdlib.h>
 #include <string.h>
 #include <string>
 
+glslang_resource_t* glslang_resource(void)
+{
+    return reinterpret_cast<glslang_resource_t*>(GetResources());
+}
+
 const glslang_resource_t* glslang_default_resource(void)
 {
-    return reinterpret_cast<const glslang_resource_t*>(&glslang::DefaultTBuiltInResource);
+    return reinterpret_cast<const glslang_resource_t*>(GetDefaultResources());
 }
 
 #if defined(__clang__) || defined(__GNUC__)
@@ -47,7 +52,7 @@ const glslang_resource_t* glslang_default_resource(void)
 
 const char* glslang_default_resource_string()
 {
-    std::string cpp_str = glslang::GetDefaultTBuiltInResourceString();
+    std::string cpp_str = GetDefaultTBuiltInResourceString();
     char* c_str = (char*)malloc(cpp_str.length() + 1);
     strcpy(c_str, cpp_str.c_str());
     return c_str;
@@ -61,5 +66,5 @@ const char* glslang_default_resource_string()
 
 void glslang_decode_resource_limits(glslang_resource_t* resources, char* config)
 {
-    glslang::DecodeResourceLimits(reinterpret_cast<TBuiltInResource*>(resources), config);
+    DecodeResourceLimits(reinterpret_cast<TBuiltInResource*>(resources), config);
 }
diff --git a/glslang/CInterface/glslang_c_interface.cpp b/glslang/CInterface/glslang_c_interface.cpp
index 1bb4000a..1465ce17 100644
--- a/glslang/CInterface/glslang_c_interface.cpp
+++ b/glslang/CInterface/glslang_c_interface.cpp
@@ -33,7 +33,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "glslang/Include/glslang_c_interface.h"
 
 #include "StandAlone/DirStackFileIncluder.h"
-#include "StandAlone/ResourceLimits.h"
+#include "glslang/Public/ResourceLimits.h"
 #include "glslang/Include/ShHandle.h"
 
 #include "glslang/Include/ResourceLimits.h"
diff --git a/glslang/CMakeLists.txt b/glslang/CMakeLists.txt
index 72e82b48..a8b14911 100644
--- a/glslang/CMakeLists.txt
+++ b/glslang/CMakeLists.txt
@@ -149,6 +149,8 @@ set(GLSLANG_SOURCES
 
 set(GLSLANG_HEADERS
     Public/ShaderLang.h
+    Public/ResourceLimits.h
+    Public/resource_limits_c.h
     Include/arrays.h
     Include/BaseTypes.h
     Include/Common.h
diff --git a/StandAlone/ResourceLimits.h b/glslang/Public/ResourceLimits.h
index 736248eb..f70be817 100644
--- a/StandAlone/ResourceLimits.h
+++ b/glslang/Public/ResourceLimits.h
@@ -37,14 +37,16 @@
 
 #include <string>
 
-#include "../glslang/Include/ResourceLimits.h"
+#include "../Include/ResourceLimits.h"
 
-namespace glslang {
+// Return pointer to user-writable Resource to pass through API in
+// future-proof way.
+extern TBuiltInResource* GetResources();
 
 // These are the default resources for TBuiltInResources, used for both
 //  - parsing this string for the case where the user didn't supply one,
 //  - dumping out a template for user construction of a config file.
-extern const TBuiltInResource DefaultTBuiltInResource;
+extern const TBuiltInResource* GetDefaultResources();
 
 // Returns the DefaultTBuiltInResource as a human-readable string.
 std::string GetDefaultTBuiltInResourceString();
@@ -52,6 +54,4 @@ std::string GetDefaultTBuiltInResourceString();
 // Decodes the resource limits from |config| to |resources|.
 void DecodeResourceLimits(TBuiltInResource* resources, char* config);
 
-}  // end namespace glslang
-
 #endif  // _STAND_ALONE_RESOURCE_LIMITS_INCLUDED_
diff --git a/StandAlone/resource_limits_c.h b/glslang/Public/resource_limits_c.h
index 108fd5e2..afe83e48 100644
--- a/StandAlone/resource_limits_c.h
+++ b/glslang/Public/resource_limits_c.h
@@ -35,6 +35,9 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 extern "C" {
 #endif
 
+// Returns a struct that can be use to create custom resource values.
+glslang_resource_t* glslang_resource(void);
+
 // These are the default resources for TBuiltInResources, used for both
 //  - parsing this string for the case where the user didn't supply one,
 //  - dumping out a template for user construction of a config file.
diff --git a/gtests/BuiltInResource.FromFile.cpp b/gtests/BuiltInResource.FromFile.cpp
index da81fe98..9a7c9b57 100644
--- a/gtests/BuiltInResource.FromFile.cpp
+++ b/gtests/BuiltInResource.FromFile.cpp
@@ -36,7 +36,7 @@
 
 #include <gtest/gtest.h>
 
-#include "StandAlone/ResourceLimits.h"
+#include "glslang/Public/ResourceLimits.h"
 #include "TestFixture.h"
 
 namespace glslangtest {
@@ -49,7 +49,7 @@ TEST_F(DefaultResourceTest, FromFile)
     const std::string path = GlobalTestSettings.testRoot + "/baseResults/test.conf";
     std::string expectedConfig;
     tryLoadFile(path, "expected resource limit", &expectedConfig);
-    const std::string realConfig = glslang::GetDefaultTBuiltInResourceString();
+    const std::string realConfig = GetDefaultTBuiltInResourceString();
     ASSERT_EQ(expectedConfig, realConfig);
 }
 
diff --git a/gtests/Config.FromFile.cpp b/gtests/Config.FromFile.cpp
index dd18c13a..05107e78 100644
--- a/gtests/Config.FromFile.cpp
+++ b/gtests/Config.FromFile.cpp
@@ -32,7 +32,7 @@
 // ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 // POSSIBILITY OF SUCH DAMAGE.
 
-#include "StandAlone/ResourceLimits.h"
+#include "glslang/Public/ResourceLimits.h"
 #include "TestFixture.h"
 
 namespace glslangtest {
@@ -65,7 +65,7 @@ TEST_P(ConfigTest, FromFile)
         char* configChars = new char[len + 1];
         memcpy(configChars, configContents.data(), len);
         configChars[len] = 0;
-        glslang::DecodeResourceLimits(&resources, configChars);
+        DecodeResourceLimits(&resources, configChars);
         delete[] configChars;
     }
 
diff --git a/gtests/TestFixture.h b/gtests/TestFixture.h
index d087d6dd..2127cae8 100644
--- a/gtests/TestFixture.h
+++ b/gtests/TestFixture.h
@@ -48,7 +48,7 @@
 #include "SPIRV/disassemble.h"
 #include "SPIRV/doc.h"
 #include "SPIRV/SPVRemapper.h"
-#include "StandAlone/ResourceLimits.h"
+#include "glslang/Public/ResourceLimits.h"
 #include "glslang/Public/ShaderLang.h"
 
 #include "Initializer.h"
@@ -199,7 +199,7 @@ public:
             shader->setStringsWithLengths(&shaderStrings, &shaderLengths, 1);
         if (!entryPointName.empty()) shader->setEntryPoint(entryPointName.c_str());
         return shader->parse(
-                (resources ? resources : &glslang::DefaultTBuiltInResource),
+                (resources ? resources : GetDefaultResources()),
                 defaultVersion, isForwardCompatible, controls);
     }
 
@@ -640,7 +640,7 @@ public:
         std::string ppShader;
         glslang::TShader::ForbidIncluder includer;
         const bool success = shader.preprocess(
-            &glslang::DefaultTBuiltInResource, defaultVersion, defaultProfile,
+            GetDefaultResources(), defaultVersion, defaultProfile,
             forceVersionProfile, isForwardCompatible, (EShMessages)(EShMsgOnlyPreprocessor | EShMsgCascadingErrors),
             &ppShader, includer);