add renderer abstraction

CMakeLists.txt

@@ -55,6 +55,19 @@ target_include_directories(imgui PUBLIC
 target_link_libraries(imgui PRIVATE SDL3::SDL3 wgpu)
 target_compile_definitions(imgui PRIVATE IMGUI_IMPL_WEBGPU_BACKEND_WGPU=1)
 
+# Dear ImGui C bindings
+add_library(dcimgui STATIC
+    libs/dcimgui/dcimgui.cpp
+    libs/dcimgui/dcimgui_internal.cpp
+    libs/dcimgui/backends/dcimgui_impl_sdl3.cpp
+    libs/dcimgui/backends/dcimgui_impl_wgpu.cpp
+)
+target_include_directories(dcimgui PUBLIC
+    libs/dcimgui
+    libs/dcimgui/backends
+)
+target_link_libraries(dcimgui PRIVATE imgui SDL3::SDL3 wgpu)
+
 # stb_image
 add_library(stb_image STATIC libs/stb/stb_image.c)
 target_include_directories(stb_image INTERFACE libs/stb)
@@ -67,6 +80,7 @@ add_executable(mikemon
     src/smol-atlas.cpp
     src/change_directory.c
     src/shaders/shaders.c
+    src/renderer_wgpu.c
     src/main.cpp
 )
 target_link_libraries(mikemon
@@ -76,6 +90,7 @@ target_link_libraries(mikemon
         SDL3_mixer::SDL3_mixer
         stb_image
         imgui
+        dcimgui
         TracyClient
         wgpu
 )