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godot/drivers/png/SCsub

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SCsub: Add python shebang as a hint for syntax highlighting Also switch existing shebangs to "better" /usr/bin/env python.
2016-10-17 14:50:25 +08:00
#!/usr/bin/env python
SCons: Format buildsystem files with psf/black Configured for a max line length of 120 characters. psf/black is very opinionated and purposely doesn't leave much room for configuration. The output is mostly OK so that should be fine for us, but some things worth noting: - Manually wrapped strings will be reflowed, so by using a line length of 120 for the sake of preserving readability for our long command calls, it also means that some manually wrapped strings are back on the same line and should be manually merged again. - Code generators using string concatenation extensively look awful, since black puts each operand on a single line. We need to refactor these generators to use more pythonic string formatting, for which many options are available (`%`, `format` or f-strings). - CI checks and a pre-commit hook will be added to ensure that future buildsystem changes are well-formatted.
2020-03-30 14:28:32 +08:00
Import("env")
GODOT IS OPEN SOURCE
2014-02-10 09:10:30 +08:00
drivers: Refactor SCsub and drop redundant env_drivers clone The reordering of the SConscript includes allows to ensure that stuff like the builtin zlib headers will be available for libpng. Also moved glew back into global env, otherwise windows seems not to find it... Kind of shooting in the dark with this multi-env setup.
2016-10-15 18:39:28 +08:00
env_png = env.Clone()
GODOT IS OPEN SOURCE
2014-02-10 09:10:30 +08:00
drivers: Refactor SCsub and drop redundant env_drivers clone The reordering of the SConscript includes allows to ensure that stuff like the builtin zlib headers will be available for libpng. Also moved glew back into global env, otherwise windows seems not to find it... Kind of shooting in the dark with this multi-env setup.
2016-10-15 18:39:28 +08:00
# Thirdparty source files
SCons: Add explicit dependencies on thirdparty code in cloned env Since we clone the environments to build thirdparty code, we don't get an explicit dependency on the build objects produced by that environment. So when we update thirdparty code, Godot code using it is not necessarily rebuilt (I think it is for changed headers, but not for changed .c/.cpp files), which can lead to an invalid compilation output (linking old Godot .o files with a newer, potentially ABI breaking version of thirdparty code). This was only seen as really problematic with bullet updates (leading to crashes when rebuilding Godot after a bullet update without cleaning .o files), but it's safer to fix it everywhere, even if it's a LOT of hacky boilerplate.
2020-12-17 23:01:36 +08:00
thirdparty_obj = []
SCons: Format buildsystem files with psf/black Configured for a max line length of 120 characters. psf/black is very opinionated and purposely doesn't leave much room for configuration. The output is mostly OK so that should be fine for us, but some things worth noting: - Manually wrapped strings will be reflowed, so by using a line length of 120 for the sake of preserving readability for our long command calls, it also means that some manually wrapped strings are back on the same line and should be manually merged again. - Code generators using string concatenation extensively look awful, since black puts each operand on a single line. We need to refactor these generators to use more pythonic string formatting, for which many options are available (`%`, `format` or f-strings). - CI checks and a pre-commit hook will be added to ensure that future buildsystem changes are well-formatted.
2020-03-30 14:28:32 +08:00
if env["builtin_libpng"]:
style: Start applying PEP8 to Python files, indentation issues Done with `autopep8 --select=E1`, fixes: - E101 - Reindent all lines. - E112 - Fix under-indented comments. - E113 - Fix over-indented comments. - E115 - Fix under-indented comments. - E116 - Fix over-indented comments. - E121 - Fix a badly indented line. - E122 - Fix a badly indented line. - E123 - Fix a badly indented line. - E124 - Fix a badly indented line. - E125 - Fix indentation undistinguish from the next logical line. - E126 - Fix a badly indented line. - E127 - Fix a badly indented line. - E128 - Fix a badly indented line. - E129 - Fix a badly indented line.
2016-10-31 01:44:57 +08:00
thirdparty_dir = "#thirdparty/libpng/"
thirdparty_sources = [
"png.c",
"pngerror.c",
"pngget.c",
"pngmem.c",
"pngpread.c",
"pngread.c",
"pngrio.c",
"pngrtran.c",
"pngrutil.c",
"pngset.c",
"pngtrans.c",
"pngwio.c",
"pngwrite.c",
"pngwtran.c",
"pngwutil.c",
]
thirdparty_sources = [thirdparty_dir + file for file in thirdparty_sources]
png: Try to fix neon issue on iphone armv7
2016-10-15 21:36:18 +08:00
SCons: Always use env.Prepend for CPPPATH Include paths are processed from left to right, so we use Prepend to ensure that paths to bundled thirdparty files will have precedence over system paths (e.g. `/usr/include` should have lowest priority).
2019-04-30 19:12:02 +08:00
env_png.Prepend(CPPPATH=[thirdparty_dir])
[Web] Rename JavaScript platform to Web. Also rename export name from "HTML5" to "Web".
2022-08-29 02:27:45 +08:00
# Needed for drivers includes and in platform/web.
SCons: Always use env.Prepend for CPPPATH Include paths are processed from left to right, so we use Prepend to ensure that paths to bundled thirdparty files will have precedence over system paths (e.g. `/usr/include` should have lowest priority).
2019-04-30 19:12:02 +08:00
env.Prepend(CPPPATH=[thirdparty_dir])
GODOT IS OPEN SOURCE
2014-02-10 09:10:30 +08:00
SCons: Build thirdparty code in own env, disable warnings Also remove unnecessary `Export('env')` in other SCsubs, Export should only be used when exporting *new* objects.
2018-09-28 19:29:52 +08:00
env_thirdparty = env_png.Clone()
env_thirdparty.disable_warnings()
SCons: Add explicit dependencies on thirdparty code in cloned env Since we clone the environments to build thirdparty code, we don't get an explicit dependency on the build objects produced by that environment. So when we update thirdparty code, Godot code using it is not necessarily rebuilt (I think it is for changed headers, but not for changed .c/.cpp files), which can lead to an invalid compilation output (linking old Godot .o files with a newer, potentially ABI breaking version of thirdparty code). This was only seen as really problematic with bullet updates (leading to crashes when rebuilding Godot after a bullet update without cleaning .o files), but it's safer to fix it everywhere, even if it's a LOT of hacky boilerplate.
2020-12-17 23:01:36 +08:00
env_thirdparty.add_source_files(thirdparty_obj, thirdparty_sources)
SCons: Build thirdparty code in own env, disable warnings Also remove unnecessary `Export('env')` in other SCsubs, Export should only be used when exporting *new* objects.
2018-09-28 19:29:52 +08:00
libpng: Enable intrinsics on x86/SSE2, ppc64/VSX, and all arm/NEON
2023-06-16 19:20:59 +08:00
if env["arch"].startswith("arm"):
if env.msvc: # Can't compile assembly files with MSVC.
env_thirdparty.Append(CPPDEFINES=[("PNG_ARM_NEON_OPT"), 0])
else:
env_neon = env_thirdparty.Clone()
if "S_compiler" in env:
env_neon["CC"] = env["S_compiler"]
neon_sources = []
neon_sources.append(env_neon.Object(thirdparty_dir + "/arm/arm_init.c"))
neon_sources.append(env_neon.Object(thirdparty_dir + "/arm/filter_neon_intrinsics.c"))
neon_sources.append(env_neon.Object(thirdparty_dir + "/arm/filter_neon.S"))
neon_sources.append(env_neon.Object(thirdparty_dir + "/arm/palette_neon_intrinsics.c"))
thirdparty_obj += neon_sources
elif env["arch"].startswith("x86"):
env_thirdparty.Append(CPPDEFINES=["PNG_INTEL_SSE"])
env_thirdparty.add_source_files(thirdparty_obj, thirdparty_dir + "/intel/intel_init.c")
env_thirdparty.add_source_files(thirdparty_obj, thirdparty_dir + "/intel/filter_sse2_intrinsics.c")
elif env["arch"] == "ppc64":
env_thirdparty.add_source_files(thirdparty_obj, thirdparty_dir + "/powerpc/powerpc_init.c")
env_thirdparty.add_source_files(thirdparty_obj, thirdparty_dir + "/powerpc/filter_vsx_intrinsics.c")
SCons: Add explicit dependencies on thirdparty code in cloned env Since we clone the environments to build thirdparty code, we don't get an explicit dependency on the build objects produced by that environment. So when we update thirdparty code, Godot code using it is not necessarily rebuilt (I think it is for changed headers, but not for changed .c/.cpp files), which can lead to an invalid compilation output (linking old Godot .o files with a newer, potentially ABI breaking version of thirdparty code). This was only seen as really problematic with bullet updates (leading to crashes when rebuilding Godot after a bullet update without cleaning .o files), but it's safer to fix it everywhere, even if it's a LOT of hacky boilerplate.
2020-12-17 23:01:36 +08:00
env.drivers_sources += thirdparty_obj
png: Split library to thirdparty dir and allow unbundling Uses the new structure agreed upon in #6157, but the thirdparty/ folder does not behave following a logic similar to that of modules/ yet. The png driver can't be moved to a module as discussed in #6157, as it's required by core together with a few other ImageLoader implementations (see drivers/register_driver_types.cpp:register_core_driver_types()) Dropped the possibility to disable PNG support, it's a core component of Godot.
2016-10-10 05:36:17 +08:00
drivers: Refactor SCsub and drop redundant env_drivers clone The reordering of the SConscript includes allows to ensure that stuff like the builtin zlib headers will be available for libpng. Also moved glew back into global env, otherwise windows seems not to find it... Kind of shooting in the dark with this multi-env setup.
2016-10-15 18:39:28 +08:00
# Godot source files
png: Split library to thirdparty dir and allow unbundling Uses the new structure agreed upon in #6157, but the thirdparty/ folder does not behave following a logic similar to that of modules/ yet. The png driver can't be moved to a module as discussed in #6157, as it's required by core together with a few other ImageLoader implementations (see drivers/register_driver_types.cpp:register_core_driver_types()) Dropped the possibility to disable PNG support, it's a core component of Godot.
2016-10-10 05:36:17 +08:00
SCons: Add explicit dependencies on thirdparty code in cloned env Since we clone the environments to build thirdparty code, we don't get an explicit dependency on the build objects produced by that environment. So when we update thirdparty code, Godot code using it is not necessarily rebuilt (I think it is for changed headers, but not for changed .c/.cpp files), which can lead to an invalid compilation output (linking old Godot .o files with a newer, potentially ABI breaking version of thirdparty code). This was only seen as really problematic with bullet updates (leading to crashes when rebuilding Godot after a bullet update without cleaning .o files), but it's safer to fix it everywhere, even if it's a LOT of hacky boilerplate.
2020-12-17 23:01:36 +08:00
driver_obj = []
env_png.add_source_files(driver_obj, "*.cpp")
env.drivers_sources += driver_obj
# Needed to force rebuilding the driver files when the thirdparty library is updated.
env.Depends(driver_obj, thirdparty_obj)
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