From 32508a2289c4147285beece54104082eb7d4a1db Mon Sep 17 00:00:00 2001
From: Sandy Carter <bwrsandman@gmail.com>
Date: Sat, 14 Jan 2023 07:42:53 -0500
Subject: [PATCH] Add loadpng sources to file

---
 cmake/bimg/3rdparty/loadpng.cmake | 26 ++++++++++++++++++++++++++
 cmake/bimg/CMakeLists.txt         |  1 +
 cmake/bimg/bimg_decode.cmake      |  4 +++-
 3 files changed, 30 insertions(+), 1 deletion(-)
 create mode 100644 cmake/bimg/3rdparty/loadpng.cmake

diff --git a/cmake/bimg/3rdparty/loadpng.cmake b/cmake/bimg/3rdparty/loadpng.cmake
new file mode 100644
index 0000000..5f99436
--- /dev/null
+++ b/cmake/bimg/3rdparty/loadpng.cmake
@@ -0,0 +1,26 @@
+# bgfx.cmake - bgfx building in cmake
+# Written in 2017 by Joshua Brookover <joshua.al.brookover@gmail.com>
+#
+# To the extent possible under law, the author(s) have dedicated all copyright
+# and related and neighboring rights to this software to the public domain
+# worldwide. This software is distributed without any warranty.
+#
+# You should have received a copy of the CC0 Public Domain Dedication along with
+# this software. If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
+
+# Ensure the directory exists
+if(NOT IS_DIRECTORY ${BIMG_DIR})
+	message(SEND_ERROR "Could not load bimg, directory does not exist. ${BIMG_DIR}")
+	return()
+endif()
+
+if(NOT LOADPNG_LIBRARIES)
+	file(
+		GLOB_RECURSE #
+		LOADPNG_SOURCES #
+		${BIMG_DIR}/3rdparty/lodepng/lodepng.cpp #
+		${BIMG_DIR}/3rdparty/lodepng/lodepng.h #
+	)
+	set_source_files_properties(${BIMG_DIR}/3rdparty/lodepng/lodepng.cpp PROPERTIES HEADER_FILE_ONLY ON)
+	set(LOADPNG_INCLUDE_DIR ${BIMG_DIR}/3rdparty)
+endif()
diff --git a/cmake/bimg/CMakeLists.txt b/cmake/bimg/CMakeLists.txt
index 7f8a0e8..2427376 100644
--- a/cmake/bimg/CMakeLists.txt
+++ b/cmake/bimg/CMakeLists.txt
@@ -8,6 +8,7 @@
 # You should have received a copy of the CC0 Public Domain Dedication along with
 # this software. If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
 
+include(3rdparty/loadpng.cmake)
 include(3rdparty/libsquish.cmake)
 include(3rdparty/astc_encoder.cmake)
 include(3rdparty/tinyexr.cmake)
diff --git a/cmake/bimg/bimg_decode.cmake b/cmake/bimg/bimg_decode.cmake
index 72b0c5e..060a049 100644
--- a/cmake/bimg/bimg_decode.cmake
+++ b/cmake/bimg/bimg_decode.cmake
@@ -21,7 +21,7 @@ set_target_properties(bimg_decode PROPERTIES FOLDER "bgfx")
 target_include_directories(
 	bimg_decode
 	PUBLIC $<BUILD_INTERFACE:${BIMG_DIR}/include> $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
-	PRIVATE ${BIMG_DIR}/3rdparty #
+	PRIVATE ${LOADPNG_INCLUDE_DIR} #
 			${MINIZ_INCLUDE_DIR} #
 			${TINYEXR_INCLUDE_DIR} #
 )
@@ -32,6 +32,7 @@ file(
 	${BIMG_DIR}/include/* #
 	${BIMG_DIR}/src/image_decode.* #
 	#
+	${LOADPNG_SOURCES} #
 	${MINIZ_SOURCES} #
 )
 
@@ -40,6 +41,7 @@ target_sources(bimg_decode PRIVATE ${BIMG_DECODE_SOURCES})
 target_link_libraries(
 	bimg_decode
 	PUBLIC bx #
+		   ${LOADPNG_LIBRARIES} #
 		   ${MINIZ_LIBRARIES} #
 		   ${TINYEXR_LIBRARIES} #
 )