added usage_defines for SPECULAR_SHININESS

added usage defines for opengl3 renderer

drivers/gles3/storage/material_storage.cpp

@@ -1378,6 +1378,7 @@ MaterialStorage::MaterialStorage() {
 		actions.usage_defines["NORMAL"] = "#define NORMAL_USED\n";
 		actions.usage_defines["NORMAL_MAP"] = "#define NORMAL_MAP_USED\n";
 		actions.usage_defines["LIGHT"] = "#define LIGHT_SHADER_CODE_USED\n";
+		actions.usage_defines["SPECULAR_SHININESS"] = "#define SPECULAR_SHININESS_USED\n";
 
 		actions.render_mode_defines["skip_vertex_transform"] = "#define SKIP_TRANSFORM_USED\n";
 		actions.render_mode_defines["unshaded"] = "#define MODE_UNSHADED\n";

servers/rendering/renderer_rd/renderer_canvas_render_rd.cpp

@@ -2431,6 +2431,7 @@ RendererCanvasRenderRD::RendererCanvasRenderRD() {
 		actions.usage_defines["NORMAL"] = "#define NORMAL_USED\n";
 		actions.usage_defines["NORMAL_MAP"] = "#define NORMAL_MAP_USED\n";
 		actions.usage_defines["LIGHT"] = "#define LIGHT_SHADER_CODE_USED\n";
+		actions.usage_defines["SPECULAR_SHININESS"] = "#define SPECULAR_SHININESS_USED\n";
 
 		actions.render_mode_defines["skip_vertex_transform"] = "#define SKIP_TRANSFORM_USED\n";
 		actions.render_mode_defines["unshaded"] = "#define MODE_UNSHADED\n";