Merge pull request #158 from Bottinator22/main

Scriptable shader uniforms

1 files changed, 24 insertions, 0 deletions

diff --git a/source/client/StarRenderingLuaBindings.cpp b/source/client/StarRenderingLuaBindings.cpp
index 4c9e7a2..39dc1a1 100644
--- a/source/client/StarRenderingLuaBindings.cpp
+++ b/source/client/StarRenderingLuaBindings.cpp
@@ -1,6 +1,8 @@
 #include "StarRenderingLuaBindings.hpp"
+#include "StarJsonExtra.hpp"
 #include "StarLuaConverters.hpp"
 #include "StarClientApplication.hpp"
+#include "StarRenderer.hpp"
 
 namespace Star {
 
@@ -11,8 +13,30 @@ LuaCallbacks LuaBindings::makeRenderingCallbacks(ClientApplication* app) {
   callbacks.registerCallbackWithSignature<void, String, bool, Maybe<bool>>("setPostProcessGroupEnabled", bind(mem_fn(&ClientApplication::setPostProcessGroupEnabled), app, _1, _2, _3));
   callbacks.registerCallbackWithSignature<bool, String>("postProcessGroupEnabled", bind(mem_fn(&ClientApplication::postProcessGroupEnabled), app, _1));
   
+  
   // not entirely necessary (root.assetJson can achieve the same purpose) but may as well
   callbacks.registerCallbackWithSignature<Json>("postProcessGroups", bind(mem_fn(&ClientApplication::postProcessGroups), app));
+  
+  // typedef Variant<float, int, Vec2F, Vec3F, Vec4F, bool> RenderEffectParameter;
+  // feel free to change this if there's a better way to do this
+  // specifically checks if the effect parameter is an int since Lua prefers converting the values to floats
+  callbacks.registerCallback("setEffectParameter", [app](String const& effectName, String const& effectParameter, RenderEffectParameter const& value) {
+    auto renderer = app->renderer();
+    auto mtype = renderer->getEffectScriptableParameterType(effectName, effectParameter);
+    if (mtype) {
+      auto type = mtype.value();
+      if (type == 1 && value.is<float>()) {
+        renderer->setEffectScriptableParameter(effectName, effectParameter, (int)value.get<float>());
+      } else {
+        renderer->setEffectScriptableParameter(effectName, effectParameter, value);
+      }
+    }
+  });
+  
+  callbacks.registerCallback("getEffectParameter", [app](String const& effectName, String const& effectParameter) {
+    auto renderer = app->renderer();
+    return renderer->getEffectScriptableParameter(effectName, effectParameter);
+  });
 
   return callbacks;
 }