Initial commit.

update_mesa.sh

@@ -0,0 +1,183 @@
+#!/bin/bash
+
+# The need for the custom steps has been found empirically, by multiple build attempts.
+# The commands to run and their arguments have been obtained from the various Meson build scripts.
+# Some can (or even must) be run locally at the Mesa repo, then resulting files are copied.
+# Others, due to the sheer size of the generated files, are instead run at the Godot build system;
+# this script will only copy the needed scripts and data files from Mesa.
+
+check_error() {
+    if [ $? -ne 0 ]; then echo "Error!" && exit 1; fi
+}
+
+run_custom_steps_at_source() {
+    run_step() {
+        local P_SUBDIR=$1
+        local P_SCRIPT_PLUS_ARGS=$2
+        local P_REDIR_TARGET=$3
+
+        echo "Custom step: [$P_SUBDIR] $P_SCRIPT_PLUS_ARGS"
+
+        local OUTDIR=$GODOT_DIR/godot-mesa/$P_SUBDIR
+        mkdir -p $OUTDIR
+        check_error
+        pushd ./mesa/$P_SUBDIR > /dev/null
+        check_error
+        eval "local COMMAND=\"$P_SCRIPT_PLUS_ARGS\""
+        if [ ! -z "$P_REDIR_TARGET" ]; then
+            eval "TARGET=\"$P_REDIR_TARGET\""
+            python3 $COMMAND > $TARGET
+        else
+            python3 $COMMAND
+        fi
+        check_error
+        popd > /dev/null
+        check_error
+    }
+
+    run_step bin 'git_sha1_gen.py --output $OUTDIR/git_sha1.h'
+    run_step src/compiler/spirv 'spirv_info_c.py spirv.core.grammar.json $OUTDIR/spirv_info.c'
+    run_step src/compiler/spirv 'vtn_gather_types_c.py spirv.core.grammar.json $OUTDIR/vtn_gather_types.c'
+}
+
+copy_file() {
+    echo "Copying $1/$2"
+    mkdir -p godot-mesa/$1
+    check_error
+    cp ./mesa/$1/$2 godot-mesa/$1
+    check_error
+}
+
+copy_custom_steps_sources() {
+    copy_file src/compiler/glsl ir_expression_operation.py
+    copy_file src/compiler/nir nir_builder_opcodes_h.py
+    copy_file src/compiler/nir nir_constant_expressions.py
+    copy_file src/compiler/nir nir_intrinsics.py
+    copy_file src/compiler/nir nir_intrinsics_h.py
+    copy_file src/compiler/nir nir_intrinsics_c.py
+    copy_file src/compiler/nir nir_intrinsics_indices_h.py
+    copy_file src/compiler/nir nir_opcodes.py
+    copy_file src/compiler/nir nir_opcodes_h.py
+    copy_file src/compiler/nir nir_opcodes_c.py
+    copy_file src/compiler/nir nir_algebraic.py
+    copy_file src/compiler/nir nir_opt_algebraic.py
+    copy_file src/compiler/spirv spir-v.xml
+    copy_file src/compiler/spirv vtn_generator_ids_h.py
+    copy_file src/microsoft/compiler dxil_nir_algebraic.py
+    copy_file src/util format_srgb.py
+    copy_file src/util/format u_format.csv
+    copy_file src/util/format u_format_pack.py
+    copy_file src/util/format u_format_parse.py
+    copy_file src/util/format u_format_table.py
+}
+
+copy_sources() {
+    copy_subir_sources() {
+        echo "Copying [.c/.cpp/.h] $1/"
+        mkdir -p godot-mesa/$1
+        check_error
+        find ./mesa/$1 -maxdepth 1 \( -name '*.c' -or -name '*.cpp' -or -name '*.h' \) -exec cp {} godot-mesa/$1 \;
+        check_error
+    }
+
+    copy_subir_headers() {
+        echo "Copying [.h] $1/"
+        mkdir -p godot-mesa/$1
+        check_error
+        find ./mesa/$1 -maxdepth 1 -name '*.h' -exec cp {} godot-mesa/$1 \;
+        check_error
+    }
+
+    # These are the first we know for sure we want to copy.
+    copy_file . VERSION
+    copy_file . .editorconfig
+    copy_subir_sources src/microsoft/compiler
+    copy_subir_sources src/microsoft/spirv_to_dxil
+    # The need for these have been found by multiple build attempts.
+    # Initially, we copy only the headers. Later, we promote some to be
+    # copied with sources, as advised by linker errors.
+    # Multiple rounds of such procedure may be needed.
+    copy_subir_headers bin
+    copy_subir_headers include
+    copy_subir_headers include/GL
+    copy_subir_headers include/GLES
+    copy_subir_headers include/GLES2
+    copy_subir_headers include/GLES3
+    copy_subir_headers include/KHR
+    copy_subir_headers src/c11
+    copy_file src/c11/impl threads_win32.*
+    copy_subir_sources src/compiler
+    copy_subir_headers src/compiler/glsl
+    copy_subir_sources src/compiler/nir
+    copy_subir_sources src/compiler/spirv
+    copy_subir_headers src/gallium/include/pipe
+    copy_subir_headers src/mesa/main
+    copy_subir_headers src/mesa/program
+    copy_subir_sources src/util/format
+    copy_subir_sources src/util/sha1
+    copy_file src/vulkan/runtime vk_object.h
+    copy_file src/vulkan/runtime vk_ycbcr_conversion.h
+    copy_file src/vulkan/util vk_format.h
+    # With non-header files in src/util/ we have to be selective,
+    # since many of the source files there are not needed and
+    # on top of that will cause build errors.
+    # We still take the liberty to copy all the headers.
+    copy_subir_headers src/util
+    copy_file src/util blob.c
+    copy_file src/util double.c
+    copy_file src/util half_float.c
+    copy_file src/util hash_table.c
+    copy_file src/util log.c
+    copy_file src/util mesa-sha1.c
+    copy_file src/util memstream.c
+    copy_file src/util os_misc.c
+    copy_file src/util ralloc.c
+    copy_file src/util rb_tree.c
+    copy_file src/util rgtc.c
+    copy_file src/util set.c
+    copy_file src/util simple_mtx.c
+    copy_file src/util softfloat.c
+    copy_file src/util string_buffer.c
+    copy_file src/util u_call_once.c
+    copy_file src/util u_debug.c
+    copy_file src/util u_printf.c
+    copy_file src/util u_qsort.cpp
+    copy_file src/util u_vector.c
+    copy_file src/util u_worklist.c
+
+    cp ./mesa/VERSION godot-mesa
+    check_error
+}
+
+blacklist_sources() {
+    # These are programs. Not needed and makes build hungrier for dependencies.
+    rm godot-mesa/src/compiler/spirv/spirv2nir.c
+    check_error
+    rm godot-mesa/src/microsoft/spirv_to_dxil/spirv2dxil.c
+    check_error
+}
+
+tweak_gitignore() {
+    # bin/ is globally Git-ignored; we need the one of Mesa.
+    echo '!bin/' > godot-mesa/.gitignore
+    check_error
+    echo 'generated/' >> godot-mesa/.gitignore
+    check_error
+}
+
+
+GODOT_DIR=$(pwd)
+
+echo "Clearing godot-mesa/"
+find godot-mesa -mindepth 1 -type d | xargs rm -rf
+
+run_custom_steps_at_source
+copy_custom_steps_sources
+copy_sources
+blacklist_sources
+tweak_gitignore
+
+if [ -d ./godot-patches ]; then
+    echo "Applying patches"
+    find ./godot-patches -name '*.patch' -exec git apply {} \;
+fi