ac465d29b4
I'm taking a page from Dolphin's book, and including copies of each dependency's source code. This combines the ease of use of including pre-built libraries instead of needing to navigate a package manager - as is (or was) the case for MSVC - with the portability of using packages. Granted, this method's more of a jack of all trades, master of none, since it's *less* user-friendly than prebuilt packages (compilation times), and you don't get the per-distro compatibility fixes you'd get from a package manager. You can still use system libs if you want. In fact, it's still the default behaviour: compiling the libs manually is just a fallback. I'll add an option to force-enable this soon, however, since it's a nicer way to produce static MSYS2 builds than the hackish nightmare that I was using before. Not to mention, having my own copy of the sources means I can provide my own fixes and tweaks your package manager may not. For example, I can combine MSYS2's FreeType subpixel rendering with vcpkg's fix for SDL2 exporting its symbols in static builds.
535 lines
15 KiB
Perl
Executable file
535 lines
15 KiB
Perl
Executable file
#!/usr/bin/perl -w
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#
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# A script to generate optimized C blitters for Simple DirectMedia Layer
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# http://www.libsdl.org/
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use warnings;
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use strict;
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my %file;
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# The formats potentially supported by this script:
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# SDL_PIXELFORMAT_RGB332
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# SDL_PIXELFORMAT_RGB444
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# SDL_PIXELFORMAT_RGB555
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# SDL_PIXELFORMAT_ARGB4444
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# SDL_PIXELFORMAT_ARGB1555
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# SDL_PIXELFORMAT_RGB565
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# SDL_PIXELFORMAT_RGB24
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# SDL_PIXELFORMAT_BGR24
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# SDL_PIXELFORMAT_RGB888
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# SDL_PIXELFORMAT_BGR888
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# SDL_PIXELFORMAT_ARGB8888
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# SDL_PIXELFORMAT_RGBA8888
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# SDL_PIXELFORMAT_ABGR8888
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# SDL_PIXELFORMAT_BGRA8888
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# SDL_PIXELFORMAT_ARGB2101010
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# The formats we're actually creating blitters for:
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my @src_formats = (
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"RGB888",
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"BGR888",
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"ARGB8888",
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"RGBA8888",
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"ABGR8888",
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"BGRA8888",
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);
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my @dst_formats = (
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"RGB888",
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"BGR888",
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"ARGB8888",
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);
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my %format_size = (
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"RGB888" => 4,
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"BGR888" => 4,
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"ARGB8888" => 4,
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"RGBA8888" => 4,
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"ABGR8888" => 4,
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"BGRA8888" => 4,
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);
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my %format_type = (
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"RGB888" => "Uint32",
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"BGR888" => "Uint32",
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"ARGB8888" => "Uint32",
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"RGBA8888" => "Uint32",
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"ABGR8888" => "Uint32",
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"BGRA8888" => "Uint32",
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);
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my %get_rgba_string_ignore_alpha = (
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"RGB888" => "_R = (Uint8)(_pixel >> 16); _G = (Uint8)(_pixel >> 8); _B = (Uint8)_pixel;",
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"BGR888" => "_B = (Uint8)(_pixel >> 16); _G = (Uint8)(_pixel >> 8); _R = (Uint8)_pixel;",
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"ARGB8888" => "_R = (Uint8)(_pixel >> 16); _G = (Uint8)(_pixel >> 8); _B = (Uint8)_pixel;",
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"RGBA8888" => "_R = (Uint8)(_pixel >> 24); _G = (Uint8)(_pixel >> 16); _B = (Uint8)(_pixel >> 8);",
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"ABGR8888" => "_B = (Uint8)(_pixel >> 16); _G = (Uint8)(_pixel >> 8); _R = (Uint8)_pixel;",
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"BGRA8888" => "_B = (Uint8)(_pixel >> 24); _G = (Uint8)(_pixel >> 16); _R = (Uint8)(_pixel >> 8);",
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);
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my %get_rgba_string = (
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"RGB888" => $get_rgba_string_ignore_alpha{"RGB888"} . " _A = 0xFF;",
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"BGR888" => $get_rgba_string_ignore_alpha{"BGR888"} . " _A = 0xFF;",
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"ARGB8888" => $get_rgba_string_ignore_alpha{"ARGB8888"} . " _A = (Uint8)(_pixel >> 24);",
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"RGBA8888" => $get_rgba_string_ignore_alpha{"RGBA8888"} . " _A = (Uint8)_pixel;",
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"ABGR8888" => $get_rgba_string_ignore_alpha{"ABGR8888"} . " _A = (Uint8)(_pixel >> 24);",
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"BGRA8888" => $get_rgba_string_ignore_alpha{"BGRA8888"} . " _A = (Uint8)_pixel;",
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);
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my %set_rgba_string = (
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"RGB888" => "_pixel = ((Uint32)_R << 16) | ((Uint32)_G << 8) | _B;",
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"BGR888" => "_pixel = ((Uint32)_B << 16) | ((Uint32)_G << 8) | _R;",
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"ARGB8888" => "_pixel = ((Uint32)_A << 24) | ((Uint32)_R << 16) | ((Uint32)_G << 8) | _B;",
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"RGBA8888" => "_pixel = ((Uint32)_R << 24) | ((Uint32)_G << 16) | ((Uint32)_B << 8) | _A;",
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"ABGR8888" => "_pixel = ((Uint32)_A << 24) | ((Uint32)_B << 16) | ((Uint32)_G << 8) | _R;",
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"BGRA8888" => "_pixel = ((Uint32)_B << 24) | ((Uint32)_G << 16) | ((Uint32)_R << 8) | _A;",
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);
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sub open_file {
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my $name = shift;
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open(FILE, ">$name.new") || die "Cant' open $name.new: $!";
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print FILE <<__EOF__;
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/* DO NOT EDIT! This file is generated by sdlgenblit.pl */
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/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2018 Sam Lantinga <slouken\@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "../SDL_internal.h"
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/* *INDENT-OFF* */
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__EOF__
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}
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sub close_file {
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my $name = shift;
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print FILE <<__EOF__;
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/* *INDENT-ON* */
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/* vi: set ts=4 sw=4 expandtab: */
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__EOF__
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close FILE;
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if ( ! -f $name || system("cmp -s $name $name.new") != 0 ) {
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rename("$name.new", "$name");
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} else {
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unlink("$name.new");
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}
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}
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sub output_copydefs
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{
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print FILE <<__EOF__;
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extern SDL_BlitFuncEntry SDL_GeneratedBlitFuncTable[];
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__EOF__
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}
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sub output_copyfuncname
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{
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my $prefix = shift;
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my $src = shift;
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my $dst = shift;
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my $modulate = shift;
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my $blend = shift;
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my $scale = shift;
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my $args = shift;
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my $suffix = shift;
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print FILE "$prefix SDL_Blit_${src}_${dst}";
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if ( $modulate ) {
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print FILE "_Modulate";
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}
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if ( $blend ) {
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print FILE "_Blend";
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}
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if ( $scale ) {
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print FILE "_Scale";
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}
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if ( $args ) {
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print FILE "(SDL_BlitInfo *info)";
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}
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print FILE "$suffix";
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}
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sub get_rgba
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{
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my $prefix = shift;
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my $format = shift;
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my $ignore_alpha = shift;
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my $string;
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if ($ignore_alpha) {
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$string = $get_rgba_string_ignore_alpha{$format};
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} else {
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$string = $get_rgba_string{$format};
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}
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$string =~ s/_/$prefix/g;
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if ( $prefix ne "" ) {
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print FILE <<__EOF__;
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${prefix}pixel = *$prefix;
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__EOF__
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} else {
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print FILE <<__EOF__;
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pixel = *src;
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__EOF__
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}
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print FILE <<__EOF__;
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$string
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__EOF__
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}
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sub set_rgba
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{
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my $prefix = shift;
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my $format = shift;
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my $string = $set_rgba_string{$format};
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$string =~ s/_/$prefix/g;
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print FILE <<__EOF__;
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$string
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*dst = ${prefix}pixel;
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__EOF__
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}
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sub output_copycore
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{
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my $src = shift;
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my $dst = shift;
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my $modulate = shift;
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my $blend = shift;
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my $s = "";
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my $d = "";
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# Nice and easy...
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if ( $src eq $dst && !$modulate && !$blend ) {
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print FILE <<__EOF__;
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*dst = *src;
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__EOF__
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return;
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}
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my $dst_has_alpha = ($dst =~ /A/) ? 1 : 0;
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my $ignore_dst_alpha = !$dst_has_alpha && !$blend;
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if ( $blend ) {
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get_rgba("src", $src, $ignore_dst_alpha);
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get_rgba("dst", $dst, !$dst_has_alpha);
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$s = "src";
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$d = "dst";
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} else {
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get_rgba("", $src, $ignore_dst_alpha);
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}
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if ( $modulate ) {
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print FILE <<__EOF__;
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if (flags & SDL_COPY_MODULATE_COLOR) {
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${s}R = (${s}R * modulateR) / 255;
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${s}G = (${s}G * modulateG) / 255;
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${s}B = (${s}B * modulateB) / 255;
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}
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__EOF__
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if (not $ignore_dst_alpha) {
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print FILE <<__EOF__;
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if (flags & SDL_COPY_MODULATE_ALPHA) {
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${s}A = (${s}A * modulateA) / 255;
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}
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__EOF__
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}
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}
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if ( $blend ) {
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print FILE <<__EOF__;
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if (flags & (SDL_COPY_BLEND|SDL_COPY_ADD)) {
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/* This goes away if we ever use premultiplied alpha */
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if (${s}A < 255) {
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${s}R = (${s}R * ${s}A) / 255;
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${s}G = (${s}G * ${s}A) / 255;
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${s}B = (${s}B * ${s}A) / 255;
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}
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}
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switch (flags & (SDL_COPY_BLEND|SDL_COPY_ADD|SDL_COPY_MOD)) {
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case SDL_COPY_BLEND:
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${d}R = ${s}R + ((255 - ${s}A) * ${d}R) / 255;
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${d}G = ${s}G + ((255 - ${s}A) * ${d}G) / 255;
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${d}B = ${s}B + ((255 - ${s}A) * ${d}B) / 255;
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__EOF__
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if ( $dst_has_alpha ) {
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print FILE <<__EOF__;
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${d}A = ${s}A + ((255 - ${s}A) * ${d}A) / 255;
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__EOF__
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}
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print FILE <<__EOF__;
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break;
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case SDL_COPY_ADD:
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${d}R = ${s}R + ${d}R; if (${d}R > 255) ${d}R = 255;
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${d}G = ${s}G + ${d}G; if (${d}G > 255) ${d}G = 255;
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${d}B = ${s}B + ${d}B; if (${d}B > 255) ${d}B = 255;
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break;
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case SDL_COPY_MOD:
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${d}R = (${s}R * ${d}R) / 255;
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${d}G = (${s}G * ${d}G) / 255;
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${d}B = (${s}B * ${d}B) / 255;
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break;
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}
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__EOF__
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}
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if ( $blend ) {
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set_rgba("dst", $dst);
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} else {
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set_rgba("", $dst);
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}
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}
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sub output_copyfunc
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{
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my $src = shift;
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my $dst = shift;
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my $modulate = shift;
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my $blend = shift;
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my $scale = shift;
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my $dst_has_alpha = ($dst =~ /A/) ? 1 : 0;
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my $ignore_dst_alpha = !$dst_has_alpha && !$blend;
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output_copyfuncname("static void", $src, $dst, $modulate, $blend, $scale, 1, "\n");
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print FILE <<__EOF__;
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{
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__EOF__
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if ( $modulate || $blend ) {
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print FILE <<__EOF__;
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const int flags = info->flags;
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__EOF__
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}
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if ( $modulate ) {
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print FILE <<__EOF__;
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const Uint32 modulateR = info->r;
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const Uint32 modulateG = info->g;
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const Uint32 modulateB = info->b;
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__EOF__
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if (!$ignore_dst_alpha) {
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print FILE <<__EOF__;
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const Uint32 modulateA = info->a;
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__EOF__
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}
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}
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if ( $blend ) {
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print FILE <<__EOF__;
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Uint32 srcpixel;
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Uint32 srcR, srcG, srcB, srcA;
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Uint32 dstpixel;
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__EOF__
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if ($dst_has_alpha) {
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print FILE <<__EOF__;
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Uint32 dstR, dstG, dstB, dstA;
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__EOF__
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} else {
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print FILE <<__EOF__;
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Uint32 dstR, dstG, dstB;
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__EOF__
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}
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} elsif ( $modulate || $src ne $dst ) {
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print FILE <<__EOF__;
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Uint32 pixel;
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__EOF__
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if (!$ignore_dst_alpha) {
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print FILE <<__EOF__;
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Uint32 R, G, B, A;
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__EOF__
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} else {
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print FILE <<__EOF__;
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Uint32 R, G, B;
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__EOF__
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}
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}
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if ( $scale ) {
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print FILE <<__EOF__;
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int srcy, srcx;
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int posy, posx;
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int incy, incx;
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__EOF__
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print FILE <<__EOF__;
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srcy = 0;
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posy = 0;
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incy = (info->src_h << 16) / info->dst_h;
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incx = (info->src_w << 16) / info->dst_w;
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while (info->dst_h--) {
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$format_type{$src} *src = 0;
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$format_type{$dst} *dst = ($format_type{$dst} *)info->dst;
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int n = info->dst_w;
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srcx = -1;
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posx = 0x10000L;
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while (posy >= 0x10000L) {
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++srcy;
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posy -= 0x10000L;
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}
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while (n--) {
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if (posx >= 0x10000L) {
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while (posx >= 0x10000L) {
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++srcx;
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posx -= 0x10000L;
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}
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src = ($format_type{$src} *)(info->src + (srcy * info->src_pitch) + (srcx * $format_size{$src}));
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__EOF__
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print FILE <<__EOF__;
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}
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__EOF__
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output_copycore($src, $dst, $modulate, $blend);
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print FILE <<__EOF__;
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posx += incx;
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++dst;
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}
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posy += incy;
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info->dst += info->dst_pitch;
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}
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__EOF__
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} else {
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print FILE <<__EOF__;
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while (info->dst_h--) {
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$format_type{$src} *src = ($format_type{$src} *)info->src;
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$format_type{$dst} *dst = ($format_type{$dst} *)info->dst;
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int n = info->dst_w;
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while (n--) {
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__EOF__
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output_copycore($src, $dst, $modulate, $blend);
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print FILE <<__EOF__;
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++src;
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++dst;
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}
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info->src += info->src_pitch;
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info->dst += info->dst_pitch;
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}
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__EOF__
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}
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print FILE <<__EOF__;
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}
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__EOF__
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}
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sub output_copyfunc_h
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{
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}
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sub output_copyinc
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{
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print FILE <<__EOF__;
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#include "SDL_video.h"
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#include "SDL_blit.h"
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#include "SDL_blit_auto.h"
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__EOF__
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}
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sub output_copyfunctable
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{
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print FILE <<__EOF__;
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SDL_BlitFuncEntry SDL_GeneratedBlitFuncTable[] = {
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__EOF__
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for (my $i = 0; $i <= $#src_formats; ++$i) {
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my $src = $src_formats[$i];
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for (my $j = 0; $j <= $#dst_formats; ++$j) {
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my $dst = $dst_formats[$j];
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for (my $modulate = 0; $modulate <= 1; ++$modulate) {
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for (my $blend = 0; $blend <= 1; ++$blend) {
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for (my $scale = 0; $scale <= 1; ++$scale) {
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if ( $modulate || $blend || $scale ) {
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print FILE " { SDL_PIXELFORMAT_$src, SDL_PIXELFORMAT_$dst, ";
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my $flags = "";
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my $flag = "";
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if ( $modulate ) {
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$flag = "SDL_COPY_MODULATE_COLOR | SDL_COPY_MODULATE_ALPHA";
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if ( $flags eq "" ) {
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$flags = $flag;
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} else {
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$flags = "$flags | $flag";
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}
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}
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if ( $blend ) {
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$flag = "SDL_COPY_BLEND | SDL_COPY_ADD | SDL_COPY_MOD";
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if ( $flags eq "" ) {
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$flags = $flag;
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} else {
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$flags = "$flags | $flag";
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}
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}
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if ( $scale ) {
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$flag = "SDL_COPY_NEAREST";
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if ( $flags eq "" ) {
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$flags = $flag;
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} else {
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$flags = "$flags | $flag";
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}
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}
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if ( $flags eq "" ) {
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$flags = "0";
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}
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print FILE "($flags), SDL_CPU_ANY,";
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output_copyfuncname("", $src_formats[$i], $dst_formats[$j], $modulate, $blend, $scale, 0, " },\n");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
print FILE <<__EOF__;
|
|
{ 0, 0, 0, 0, NULL }
|
|
};
|
|
|
|
__EOF__
|
|
}
|
|
|
|
sub output_copyfunc_c
|
|
{
|
|
my $src = shift;
|
|
my $dst = shift;
|
|
|
|
for (my $modulate = 0; $modulate <= 1; ++$modulate) {
|
|
for (my $blend = 0; $blend <= 1; ++$blend) {
|
|
for (my $scale = 0; $scale <= 1; ++$scale) {
|
|
if ( $modulate || $blend || $scale ) {
|
|
output_copyfunc($src, $dst, $modulate, $blend, $scale);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
open_file("SDL_blit_auto.h");
|
|
output_copydefs();
|
|
for (my $i = 0; $i <= $#src_formats; ++$i) {
|
|
for (my $j = 0; $j <= $#dst_formats; ++$j) {
|
|
output_copyfunc_h($src_formats[$i], $dst_formats[$j]);
|
|
}
|
|
}
|
|
print FILE "\n";
|
|
close_file("SDL_blit_auto.h");
|
|
|
|
open_file("SDL_blit_auto.c");
|
|
output_copyinc();
|
|
for (my $i = 0; $i <= $#src_formats; ++$i) {
|
|
for (my $j = 0; $j <= $#dst_formats; ++$j) {
|
|
output_copyfunc_c($src_formats[$i], $dst_formats[$j]);
|
|
}
|
|
}
|
|
output_copyfunctable();
|
|
close_file("SDL_blit_auto.c");
|