Add shader compilation to Makefile

Makefile

@@ -5,6 +5,7 @@ MACHINE        = $(shell uname -m)
 PLATFORM       = $(KERNEL)_$(MACHINE)
 CC             = clang
 CXX            = clang++
+SLANGC         = slangc
 C_SRCS         = src/main.c
 C_UNITY_SRCS   = src/wapp/wapp.c         \
                  src/config/config_src.c \
@@ -17,11 +18,14 @@ LDFLAGS        = -g -DWP_DEBUG_ASSERT
 LDLIBS         = -lm
 WND_BKND       = SDL
 GPU_BKND       = Vulkan
+SLANGC_FLAGS   = -entry vertMain -entry fragMain
+SHADER_SRC     = src/shaders/shader.slang
 BUILD_ROOT     = .build
 BUILDDIR       = $(BUILD_ROOT)/$(PLATFORM)
 OBJDIR         = $(BUILDDIR)/obj
 COBJDIR        = $(OBJDIR)/c
 CXXOBJDIR      = $(OBJDIR)/cxx
+SHADER_OUTDIR  = $(BUILDDIR)/shaders
 
 ifeq ($(WND_BKND), SDL)
 	CFLAGS += -DUSE_SDL_WINDOW_BACKEND
@@ -41,12 +45,12 @@ CXX_UNITY_OBJS = $(patsubst %.cpp, $(CXXOBJDIR)/%.o, $(CXX_UNITY_SRCS))
 OBJS           = $(COBJS) $(C_UNITY_OBJS) $(CXX_UNITY_OBJS)
 OUT_NAME       = main
 OUT            = $(BUILDDIR)/$(OUT_NAME)
+SHADER_OUT     = $(SHADER_OUTDIR)/shader.spv
 
-build: $(OUT)
+build: $(OUT) $(SHADER_OUT)
 
 $(OUT): $(OBJS)
 	$(CXX) $(LDFLAGS) -o "$@" $^ $(LDLIBS)
-	@cp -r src/shaders $(BUILDDIR)
 
 $(COBJS): $(COBJDIR)/%.o: %.c
 	@mkdir -p "$(@D)"
@@ -60,6 +64,10 @@ $(CXX_UNITY_OBJS): $(CXXOBJDIR)/%.o: %.cpp FORCE
 	@mkdir -p "$(@D)"
 	$(CXX) $(CXXFLAGS) "$<" -o "$@"
 
+$(SHADER_OUT): $(SHADER_SRC)
+	@mkdir -p $(SHADER_OUTDIR)
+	$(SLANGC) $(SHADER_SRC) $(SLANGC_FLAGS) -o $(SHADER_OUT)
+
 run:
 	@cd $(BUILDDIR) && ./$(OUT_NAME)