Make lowest line of Splash image frames transparent to work around scaling issues
The Splash image is scaled. Sometimes, the lowest line is repeated on the top, which caused some weird lines to appear above big splashes (e.g. piano).
This has been done fully automated with a script. Only the alpha channel was changed. The color information is preserved.
# - Locate SDL2_image library
# This module defines:
# SDL2_IMAGE_LIBRARIES, the name of the library to link against
# SDL2_IMAGE_INCLUDE_DIRS, where to find the headers
# SDL2_IMAGE_FOUND, if false, do not try to link against
# SDL2_IMAGE_VERSION_STRING - human-readable string containing the version of SDL2_image
#
# For backward compatiblity the following variables are also set:
# SDL2IMAGE_LIBRARY (same value as SDL2_IMAGE_LIBRARIES)
# SDL2IMAGE_INCLUDE_DIR (same value as SDL2_IMAGE_INCLUDE_DIRS)
# SDL2IMAGE_FOUND (same value as SDL2_IMAGE_FOUND)
#
# $SDL2DIR is an environment variable that would
# correspond to the ./configure --prefix=$SDL2DIR
# used in building SDL2.
#
# Created by Eric Wing. This was influenced by the FindSDL2.cmake
# module, but with modifications to recognize OS X frameworks and
# additional Unix paths (FreeBSD, etc).
#=============================================================================
# Copyright 2005-2009 Kitware, Inc.
# Copyright 2012 Benjamin Eikel
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distribute this file outside of CMake, substitute the full
# License text for the above reference.)
if(NOT SDL2_IMAGE_INCLUDE_DIR AND SDL2IMAGE_INCLUDE_DIR)
set(SDL2_IMAGE_INCLUDE_DIR ${SDL2IMAGE_INCLUDE_DIR} CACHE PATH "directory cache
entry initialized from old variable name")
endif()
find_path(SDL2_IMAGE_INCLUDE_DIR SDL_image.h
HINTS
ENV SDL2IMAGEDIR
ENV SDL2DIR
PATH_SUFFIXES include/SDL2 include
)
if(NOT SDL2_IMAGE_LIBRARY AND SDL2IMAGE_LIBRARY)
set(SDL2_IMAGE_LIBRARY ${SDL2IMAGE_LIBRARY} CACHE FILEPATH "file cache entry
initialized from old variable name")
endif()
find_library(SDL2_IMAGE_LIBRARY
NAMES SDL2_image
HINTS
ENV SDL2IMAGEDIR
ENV SDL2DIR
PATH_SUFFIXES lib
)
if(SDL2_IMAGE_INCLUDE_DIR AND EXISTS "${SDL2_IMAGE_INCLUDE_DIR}/SDL_image.h")
file(STRINGS "${SDL2_IMAGE_INCLUDE_DIR}/SDL_image.h" SDL2_IMAGE_VERSION_MAJOR_LINE REGEX "^#define[ \t]+SDL_IMAGE_MAJOR_VERSION[ \t]+[0-9]+$")
file(STRINGS "${SDL2_IMAGE_INCLUDE_DIR}/SDL_image.h" SDL2_IMAGE_VERSION_MINOR_LINE REGEX "^#define[ \t]+SDL_IMAGE_MINOR_VERSION[ \t]+[0-9]+$")
file(STRINGS "${SDL2_IMAGE_INCLUDE_DIR}/SDL_image.h" SDL2_IMAGE_VERSION_PATCH_LINE REGEX "^#define[ \t]+SDL_IMAGE_PATCHLEVEL[ \t]+[0-9]+$")
string(REGEX REPLACE "^#define[ \t]+SDL_IMAGE_MAJOR_VERSION[ \t]+([0-9]+)$" "\\1" SDL2_IMAGE_VERSION_MAJOR "${SDL2_IMAGE_VERSION_MAJOR_LINE}")
string(REGEX REPLACE "^#define[ \t]+SDL_IMAGE_MINOR_VERSION[ \t]+([0-9]+)$" "\\1" SDL2_IMAGE_VERSION_MINOR "${SDL2_IMAGE_VERSION_MINOR_LINE}")
string(REGEX REPLACE "^#define[ \t]+SDL_IMAGE_PATCHLEVEL[ \t]+([0-9]+)$" "\\1" SDL2_IMAGE_VERSION_PATCH "${SDL2_IMAGE_VERSION_PATCH_LINE}")
set(SDL2_IMAGE_VERSION_STRING ${SDL2_IMAGE_VERSION_MAJOR}.${SDL2_IMAGE_VERSION_MINOR}.${SDL2_IMAGE_VERSION_PATCH})
unset(SDL2_IMAGE_VERSION_MAJOR_LINE)
unset(SDL2_IMAGE_VERSION_MINOR_LINE)
unset(SDL2_IMAGE_VERSION_PATCH_LINE)
unset(SDL2_IMAGE_VERSION_MAJOR)
unset(SDL2_IMAGE_VERSION_MINOR)
unset(SDL2_IMAGE_VERSION_PATCH)
endif()
set(SDL2_IMAGE_LIBRARIES ${SDL2_IMAGE_LIBRARY})
set(SDL2_IMAGE_INCLUDE_DIRS ${SDL2_IMAGE_INCLUDE_DIR})
if(BUILD_ENGINE_JS)
set(SDL2_IMAGE_LIBRARY "sdl2_image_emscripten_internal")
set(SDL2_IMAGE_LIBRARIES "sdl2_image_emscripten_internal")
set(SDL2_IMAGE_INCLUDE_DIRS "${CMAKE_SYSTEM_INCLUDE_PATH}/SDL")
endif()
include(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(SDL2_image
REQUIRED_VARS SDL2_IMAGE_LIBRARIES SDL2_IMAGE_INCLUDE_DIRS
VERSION_VAR SDL2_IMAGE_VERSION_STRING)
# for backward compatiblity
set(SDLIMAGE_LIBRARY ${SDL2_IMAGE_LIBRARIES})
set(SDLIMAGE_INCLUDE_DIR ${SDL2_IMAGE_INCLUDE_DIRS})
set(SDLIMAGE_FOUND ${SDL2_IMAGE_FOUND})
mark_as_advanced(SDL2_IMAGE_LIBRARY SDL2_IMAGE_INCLUDE_DIR)