We be kinda rendering

2026-01-05 06:20:49 +01:00
parent 1168f9e5d1
commit c83c423b42
48 changed files with 2789 additions and 382 deletions
--- a/cmake/compile_slang_shaders.cmake
+++ b/cmake/compile_slang_shaders.cmake
@@ -0,0 +1,82 @@
+# Usage:
+#   compile_slang_shaders(
+#       TARGET compile_shaders                # custom target name to create
+#       SRC_DIR "${CMAKE_SOURCE_DIR}/assets_src/shaders"
+#       OUT_DIR "${CMAKE_SOURCE_DIR}/assets_runtime/shaders"
+#       # Optional:
+#       GLOB_PATTERN "*.slang"                # default: "*.slang"
+#       EXTRA_ARGS -O3                        # forwarded to slangc
+#       ALL                                   # if present: target is built by default
+#   )
+#
+function(compile_slang_shaders)
+    set(options ALL)
+    set(oneValueArgs TARGET SRC_DIR OUT_DIR GLOB_PATTERN)
+    set(multiValueArgs EXTRA_ARGS)
+    cmake_parse_arguments(CSS "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
+
+    if(NOT CSS_TARGET)
+        message(FATAL_ERROR "compile_slang_shaders: TARGET is required")
+    endif()
+    if(NOT CSS_SRC_DIR)
+        message(FATAL_ERROR "compile_slang_shaders: SRC_DIR is required")
+    endif()
+    if(NOT CSS_OUT_DIR)
+        message(FATAL_ERROR "compile_slang_shaders: OUT_DIR is required")
+    endif()
+
+    if(NOT CSS_GLOB_PATTERN)
+        set(CSS_GLOB_PATTERN "*.slang")
+    endif()
+
+    find_program(SLANGC_EXE NAMES slangc slangc.exe REQUIRED)
+
+    # Collect shader sources recursively
+    file(GLOB_RECURSE _SLANG_SOURCES
+            CONFIGURE_DEPENDS
+            "${CSS_SRC_DIR}/${CSS_GLOB_PATTERN}"
+    )
+
+    if(_SLANG_SOURCES STREQUAL "")
+        message(STATUS "compile_slang_shaders: No sources found in ${CSS_SRC_DIR} (pattern: ${CSS_GLOB_PATTERN})")
+    endif()
+
+    # Ensure base output directory exists at configure time (nice-to-have)
+    file(MAKE_DIRECTORY "${CSS_OUT_DIR}")
+
+    set(_SPV_OUTPUTS "")
+
+    foreach(_SLANG_FILE IN LISTS _SLANG_SOURCES)
+        file(RELATIVE_PATH _REL_PATH "${CSS_SRC_DIR}" "${_SLANG_FILE}")
+        get_filename_component(_REL_DIR "${_REL_PATH}" DIRECTORY)
+        get_filename_component(_FILE_WE "${_SLANG_FILE}" NAME_WE)
+
+        set(_OUT_SUBDIR "${CSS_OUT_DIR}/${_REL_DIR}")
+        set(_OUT_SPV    "${_OUT_SUBDIR}/${_FILE_WE}.spv")
+
+        add_custom_command(
+                OUTPUT "${_OUT_SPV}"
+                COMMAND "${CMAKE_COMMAND}" -E make_directory "${_OUT_SUBDIR}"
+                COMMAND "${SLANGC_EXE}"
+                "${_SLANG_FILE}"
+                -target spirv
+                -o "${_OUT_SPV}"
+                ${CSS_EXTRA_ARGS}
+                DEPENDS "${_SLANG_FILE}"
+                COMMENT "Compiling Slang: ${_REL_PATH} -> ${_OUT_SPV}"
+                VERBATIM
+        )
+
+        list(APPEND _SPV_OUTPUTS "${_OUT_SPV}")
+    endforeach()
+
+    # Create target
+    if(CSS_ALL)
+        add_custom_target(${CSS_TARGET} ALL DEPENDS ${_SPV_OUTPUTS})
+    else()
+        add_custom_target(${CSS_TARGET} DEPENDS ${_SPV_OUTPUTS})
+    endif()
+
+    # Export outputs to caller if they want them (optional convenience)
+    set(${CSS_TARGET}_OUTPUTS "${_SPV_OUTPUTS}" PARENT_SCOPE)
+endfunction()