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dep/stb: Use zlib for png compression

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This commit is contained in:
Connor McLaughlin 2021-07-24 15:26:35 +10:00
parent f8fe3cffd6
commit 673f9927ad
3 changed files with 28 additions and 2 deletions
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2
dep/stb/CMakeLists.txt
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@ -10,4 +10,4 @@ set(SRCS
add_library(stb ${SRCS})
target_include_directories(stb PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}/include" "${CMAKE_CURRENT_SOURCE_DIR}/src")
target_include_directories(stb INTERFACE "${CMAKE_CURRENT_SOURCE_DIR}/include")
target_link_libraries(stb Threads::Threads "${CMAKE_DL_LIBS}")
target_link_libraries(stb zlib Threads::Threads "${CMAKE_DL_LIBS}")

26
dep/stb/src/stb_image_write.c
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@ -1,2 +1,28 @@
#include <stdlib.h>
#include "zlib.h"
// https://github.com/nothings/stb/issues/113
static unsigned char* compress_for_stbiw(unsigned char* data, int data_len, int* out_len, int quality)
{
const uLongf bufSize = compressBound(data_len);
// note that buf will be free'd by stb_image_write.h
// with STBIW_FREE() (plain free() by default)
unsigned char* buf = malloc(bufSize);
if (buf == NULL)
return NULL;
if (compress2(buf, &bufSize, data, data_len, quality) != Z_OK)
{
free(buf);
return NULL;
}
*out_len = bufSize;
return buf;
}
#define STBIW_ZLIB_COMPRESS compress_for_stbiw
#define STB_IMAGE_WRITE_IMPLEMENTATION
#include "stb_image_write.h"

2
dep/stb/stb.vcxproj
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@ -22,7 +22,7 @@
<ItemDefinitionGroup>
<ClCompile>
<WarningLevel>TurnOffAllWarnings</WarningLevel>
<AdditionalIncludeDirectories>$(ProjectDir)include;$(ProjectDir)src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<AdditionalIncludeDirectories>$(SolutionDir)dep\zlib\include;$(ProjectDir)include;$(ProjectDir)src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
</ClCompile>
</ItemDefinitionGroup>