Improve dll build

Still not perfect, but more user friendly now.

meson.build

@@ -45,6 +45,8 @@ if buildtype == 'debug' or buildtype == 'debugoptimized'
   add_project_arguments([ '-DRT_DEBUG'], language : ['c', 'cpp'])
 endif
 
+fs = import('fs')
+
 # Gather dependencies
 thread_dep = dependency('threads')
 m_dep = compiler.find_library('m', required : false)
@@ -63,6 +65,10 @@ engine_incdir = include_directories('src')
 
 contrib_dir = meson.project_source_root() / 'contrib'
 
+# Targets append to this, to enable us to run shared library builds from IDEs
+engine_lib_paths = []
+engine_libs = []
+
 subdir('src')
 
 # Handle linking against both runtime and renderer if we build static libs
@@ -90,4 +96,12 @@ assetc_dep = declare_dependency(link_with : asset_compiler,
 # "inline" game
 if get_option('game_as_subdir')
   subdir('src/game')
+
+  # If we are building shared libraries, copy them to the games output directory.
+  # This ensures that we can debug with visual studio.
+  foreach lib_path : engine_lib_paths
+    run_target('copy'+fs.name(lib_path),
+      command : [copy_util, lib_path, join_paths(game_build_dir, fs.name(lib_path))],
+      depends : engine_libs)
+  endforeach
 endif

src/asset_compiler/pipeline_processor.c

@@ -1,5 +1,5 @@
-#include "processor.h"
 #include "description_parser.h"
+#include "processor.h"
 #include "shader_compiler.h"
 
 #include "runtime/buffer_manager.h"
@@ -10,8 +10,8 @@
 
 #include <assert.h>
 #include <limits.h>
-#include <string.h>
 #include <stdbool.h>
+#include <string.h>
 
 typedef struct {
     rt_attribute_binding *uniform_bindings;
@@ -39,7 +39,7 @@ enum {
     RT_SHADER_NOT_PRESENT = RT_ASSET_PROCESSING_FAILED + 1
 };
 
-extern rt_cvar rt_Renderer;
+extern RT_DLLIMPORT rt_cvar rt_Renderer;
 
 static bool ParseBindingIndex(rt_text_span span, unsigned int *index) {
     if (span.length == 0)
@@ -446,7 +446,9 @@ RT_ASSET_PROCESSOR_FN(PipelineProcessor) {
         goto out;
 
     rt_resource_id shader_resources[3] = {0};
-    result = rtCreateResources(pipeline.shader_count, pipeline.shader_names, pipeline.shaders,
+    result                             = rtCreateResources(pipeline.shader_count,
+                               pipeline.shader_names,
+                               pipeline.shaders,
                                shader_resources);
     if (result != RT_SUCCESS)
         goto out;

src/game/meson.build

@@ -1,10 +1,13 @@
 vy_link_libs = engine_link_libs
 vy_link_libs += asset_compiler
 
-executable('voyage',
+game = executable('voyage',
   'entry.c',
   'main.c',
   link_with : vy_link_libs,
   include_directories : engine_incdir,
   c_pch : 'pch/game_pch.h',
-  win_subsystem : 'windows')
+  win_subsystem : 'windows',
+  install : true)
+
+game_build_dir = fs.parent(game.full_path())

src/renderer/vk/meson.build

@@ -31,6 +31,10 @@ if vk_dep.found()
     c_pch : 'pch/vk_pch.h',
     c_args : platform_defs,
     cpp_pch : 'pch/vk_pch.h',
-    cpp_args : platform_defs)
+    cpp_args : platform_defs,
+    install : true)
+
+    engine_libs = vk_renderer_lib
+    engine_lib_paths += vk_renderer_lib.full_path()
 endif
 

src/runtime/gfx_main.c

@@ -18,7 +18,7 @@ rt_renderer_api g_renderer;
 static rt_dynlib _renderer_lib;
 static bool _renderer_loaded = false;
 
-RT_CVAR_S(rt_Renderer, "Select the render backend. Available options: [vk], Default: vk", "vk");
+RT_DLLEXPORT RT_CVAR_S(rt_Renderer, "Select the render backend. Available options: [vk], Default: vk", "vk");
 
 #ifdef RT_STATIC_LIB
 extern void RT_RENDERER_API_FN(RegisterCVars)(void);

src/runtime/meson.build

@@ -52,4 +52,8 @@ runtime_lib = library('rt',
   contrib_dir / 'lz4/lz4.c',
   dependencies : runtime_deps,
   include_directories : [engine_incdir, runtime_incdirs],
-  c_pch : 'pch/rt_pch.h')
+  c_pch : 'pch/rt_pch.h',
+  install : true)
+
+engine_libs += runtime_lib
+engine_lib_paths += runtime_lib.full_path()

src/runtime/runtime.h

@@ -13,8 +13,10 @@ extern "C" {
 
 #if defined(_MSC_VER) && !defined(RT_STATIC_LIB)
 #define RT_DLLEXPORT __declspec(dllexport)
+#define RT_DLLIMPORT __declspec(dllimport)
 #else
 #define RT_DLLEXPORT
+#define RT_DLLIMPORT
 #endif
 
 #if defined(_MSC_VER)