From 4aa71a8e0f456fcd271e725fcf6453f1953c8c98 Mon Sep 17 00:00:00 2001 From: Allen Webster Date: Mon, 24 Apr 2023 19:12:55 -0700 Subject: [PATCH] setup the srgb anti-aliasing experiments standalone program --- .gitignore | 1 + LICENSE-GPL-3.txt | 674 ++++++++++++++ README.md | 25 + bin/bld/.gitignore | 1 + bin/bld/bld_cmd.sh | 26 + bin/bld/bld_core.sh | 615 +++++++++++++ bin/bld/bld_init.sh | 6 + bin/bld/default.bld_params.sh | 16 + bin/build_experiments.sh | 7 + bin/compiler_flags.txt | 13 + bin/file_extensions.txt | 10 + bin/linker_flags.txt | 18 + project.4coder | 32 + ...standalone_srgb_antialiasing_experiments.c | 828 ++++++++++++++++++ 14 files changed, 2272 insertions(+) create mode 100644 .gitignore create mode 100644 LICENSE-GPL-3.txt create mode 100644 README.md create mode 100644 bin/bld/.gitignore create mode 100644 bin/bld/bld_cmd.sh create mode 100644 bin/bld/bld_core.sh create mode 100644 bin/bld/bld_init.sh create mode 100644 bin/bld/default.bld_params.sh create mode 100644 bin/build_experiments.sh create mode 100644 bin/compiler_flags.txt create mode 100644 bin/file_extensions.txt create mode 100644 bin/linker_flags.txt create mode 100644 project.4coder create mode 100644 src/standalone_srgb_antialiasing_experiments.c diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..07ed706 --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +build/* \ No newline at end of file diff --git a/LICENSE-GPL-3.txt b/LICENSE-GPL-3.txt new file mode 100644 index 0000000..f288702 --- /dev/null +++ b/LICENSE-GPL-3.txt @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/README.md b/README.md new file mode 100644 index 0000000..dbc2f3e --- /dev/null +++ b/README.md @@ -0,0 +1,25 @@ +### Copyright +Copyright (C) 2023 Allen Webster + +Distributed with GPL 3 license (full license in LICENSE-GPL-3.txt) + +### Contact +allenw@mr4th.com + +### Purpose +This is a standalone Win32 OpenGL application that works as a set of +experiments to demonstrate the behavior and effect of SRGB conversions +and antialiasing techniques + +In the final output program, the left side shows the gamma-naive results +where no SRGB conversions are applied to input colors or to output colors. +The right side shows the gamma-aware results where input colors are converted +from SRGB to Linear RGB, and output colors are converted from Linear RGB to +SRGB. + +From top to bottom the experiments are: + +1. A gradient which goes white (1,1,1) to black (0,0,0) + interpolated linearly by + alpha = (x - left)/(right - left) + color = (1,1,1)*(1 - alpha) + (0,0,0)*(alpha) diff --git a/bin/bld/.gitignore b/bin/bld/.gitignore new file mode 100644 index 0000000..aa5195c --- /dev/null +++ b/bin/bld/.gitignore @@ -0,0 +1 @@ +local/* \ No newline at end of file diff --git a/bin/bld/bld_cmd.sh b/bin/bld/bld_cmd.sh new file mode 100644 index 0000000..a3ce5ac --- /dev/null +++ b/bin/bld/bld_cmd.sh @@ -0,0 +1,26 @@ +#!/bin/bash + +###### Parse Arguments ######################################################## +command=$1 +args=() +for ((i=2; i<=$#; i+=1)); do + args+=(${!i}) +done + +###### Source the Core ######################################################## +bld_path="$(dirname $(realpath "$0"))" +source "$bld_path/bld_core.sh" + +###### Dispatch ############################################################### +if [ "$command" == "cmp" ]; then + bld_compile "${args[@]}" +elif [ "$command" == "lnk" ]; then + bld_link "${args[@]}" +elif [ "$command" == "lib" ]; then + bld_lib "${args[@]}" +elif [ "$command" == "unit" ]; then + bld_unit "${args[@]}" +else + echo "unknown command '$command'" +fi + diff --git a/bin/bld/bld_core.sh b/bin/bld/bld_core.sh new file mode 100644 index 0000000..cb4ffaa --- /dev/null +++ b/bin/bld/bld_core.sh @@ -0,0 +1,615 @@ +#!/bin/bash + +###### Usage ################################################################## +# This script is meant to be invoked by the 'source' command. The variable +# bld_path should first be set to contain the path to the root folder of the +# bld system: +# bld_path="$(dirname $(realpath "$0"))"/ +# source "$bld_path/bld_core.sh" +# +# +# The following bld functions form the core "bld commands": +# bld_compile, bld_link, bld_lib, bld_unit +# +# And there are several more helper functions: +# bld_print_implicit_opts, bld_load_local_opts +# +# +# Signatures: +# bld_compile +# bld_link -- +# bld_lib -- +# bld_unit +# +# bld_print_implicit_opts (no arguments) +# bld_load_local_opts (no arguments) +# +# +# Shared notes for all: +# + Options are gathered from the command line, from the local context, and +# in the case of the commands bld_compile and bld_unit, from the source file. +# + Options in source files are specified between the strings //$ and //. +# Object files and library files should be specified with the extensions +# .obj and .lib respectively. The system automatically modifies the names to +# match the naming used by the selected context. +# + When the option "diagnostics" is included extra details will be printed +# from the bld commands. Showing the full list of options, invokation lines, +# and the build path. +# +# bld_compile: +# + Creates an object file from a single source file via the selected compiler. +# +# bld_link: +# + Creates executables and shared binaries from source files, object files, +# and static libraries. First uses the bld_compile command on the source files. +# Uses the selected linker. +# + The output is a shared binary (.dll or .so) when the option "dll" is +# included. +# +# bld_lib: +# + Creates a static library from source files and object files. First uses +# the bld_compile command on the source files. Uses the OS to determine the +# correct archiver. +# +# bld_unit: +# + Creates an executable (or shared binary) from a single source file. +# This command essentially does a single bld_compile then bld_link. With +# two differences: +# 1. The options from the source file are visible to the bld_link. +# 2. The name of the executable is determined either from the first option +# in the list or from the source file name if there are no options. +# +# bld_print_implicit_opts: +# + Shows the implicit options loaded from the local parameters script. +# +# bld_load_local_opts: +# + It is possible and sometimes useful to modify the local parameters after +# they are loaded to create certain kinds of build scripts. This function +# resets the local parameters to their original states by rerunning the +# local parameters script. + + +###### Flags From Opts ######################################################## + +function bld_flags_from_opts { + ###### parse arguments #################################################### + local in_file=$1 + local opts=() + for ((i=2; i<=$#; i+=1)); do + opts+=(${!i}) + done + + ###### load file ########################################################## + local flags_raw=() + IFS=$'\r\n' GLOBIGNORE='*' command eval 'flags_raw=($(cat $in_file))' + + ###### filter ############################################################# + local flags=() + for ((i=0;i<${#flags_raw[@]};i+=1)); do + local flag=${flags_raw[i]} + + ###### skip blanks and comments ####################################### + if [[ -z "${flag// }" ]]; then + continue + fi + if [[ "${flag:0:1}" == "#" ]]; then + continue + fi + + ###### parse line filters ############################################# + local line_filters=() + while [[ $flag = *">"* ]]; do + line_filters+=("${flag%%>*}") + flag="${flag#*>}" + done + + ###### check filters ################################################## + local can_include=1 + for ((j=0;j<${#line_filters[@]};j+=1)); do + can_include=0 + for ((k=0;k<${#opts[@]};k+=1)); do + if [[ ${opts[k]} = ${line_filters[j]} ]]; then + can_include=1 + break + fi + done + if [[ "$can_include" = "0" ]]; then + break + fi + done + if [[ "$can_include" = "1" ]]; then + flags+=("${flag}") + fi + done + + echo "${flags[@]}" +} + +###### Opts From Src ########################################################## + +function bld_opts_from_src { + ###### split file into tokens ############################################# + local in_file=$1 + local tokens=($(grep "//\\$" $in_file)) + + ###### parse ############################################################## + local in_params_range="0" + local params=() + for ((i=0; i<${#tokens[@]}; i+=1)); do + local string="${tokens[i]}" + if [[ "$in_params_range" == "0" ]]; then + if [[ "$string" == "//$" ]]; then + in_params_range="1" + fi + elif [[ "$in_params_range" == "1" ]]; then + if [[ "${string:0:2}" == "//" ]]; then + break + fi + params+=($string) + fi + done + + echo "${params[@]}" +} + +###### Dedup ################################################################## + +function bld_dedup { + ###### parse arguments #################################################### + local in=() + for ((i=1; i<=$#; i+=1)); do + in+=(${!i}) + done + + ###### dedup ############################################################## + local out=() + for ((i=0; i<${#in[@]}; i+=1)); do + local string=${in[i]} + local is_dup="0" + for ((j=0; j<${#out[@]}; j+=1)); do + if [[ "$string" == "${out[j]}" ]]; then + is_dup="1" + break + fi + done + if [[ "$is_dup" == "0" ]]; then + out+=($string) + fi + done + + echo "${out[@]}" +} + +###### Has Opt ################################################################ + +function bld_has_opt { + ###### parse arguments #################################################### + local key_opt=$1 + local opts=() + for ((i=2; i<=$#; i+=1)); do + opts+=(${!i}) + done + + ###### scan ############################################################### + local has_key=0 + for ((i=0;i<${#opts[@]};i+=1)); do + local opt=${opts[i]} + if [[ "$opt" == "$key_opt" ]]; then + has_key=1 + break + fi + done + + echo $has_key +} + +###### Load Local Options ##################################################### + +function bld_load_local_opts { + ###### os cracking ######################################################## + os="undefined" + if [ "$OSTYPE" == "win32" ] || + [ "$OSTYPE" == "msys" ]; then + os="windows" + elif [ "$OSTYPE" == "linux-gnu" ]; then + os="linux" + elif [ "$OSTYPE" == "darwin" ]; then + os="mac" + fi + ###### load parameters from the local script ################################ + if [ -f "$local_path/bld_params.sh" ]; then + source "$local_path/bld_params.sh" + fi +} + +###### Implicit Opts ########################################################## + +function bld_implicit_opts { + echo $compiler $compile_mode $os $arch $linker $ctx_opts +} + +###### Print Implicit Options ################################################# + +function bld_print_implicit_opts { + local opts=($(bld_implicit_opts)) + local bracketed=() + for ((i=0; i<=${#opts[@]}; i+=1)); do + local opt="${opts[i]}" + if [ "$opt" != "" ]; then + bracketed+=("[${opts[i]}]") + fi + done + echo "${bracketed[@]}" +} + +###### Compile ################################################################ + +function bld_compile { + ###### parse arguments #################################################### + local in_file=$1 + local opts=() + for ((i=2; i<=$#; i+=1)); do + opts+=(${!i}) + done + if [ "$in_file" == "" ]; then + echo "compile: missing input file" + return 1 + fi + + ###### finish in file ##################################################### + local final_in_file=$in_file + + ###### finish options ##################################################### + local src_opts=($(bld_opts_from_src $final_in_file)) + local impl_opts=($(bld_implicit_opts)) + local all_opts=($(bld_dedup ${impl_opts[@]} ${opts[@]} ${src_opts[@]})) + + ###### diagnostics ######################################################## + local diagnostics=$(bld_has_opt diagnostics ${all_opts[@]}) + + ###### out file name ###################################################### + local dot_ext_obj=$(bld_ext_obj) + local file_base=${final_in_file##*/} + local file_base_no_ext=${file_base%.*} + local out_file="$file_base_no_ext$dot_ext_obj" + + ###### get real flags ##################################################### + local flags=$(bld_flags_from_opts $compiler_flags_path ${all_opts[@]}) + + ###### move to output folder ############################################## + mkdir -p "$build_path" + cd $build_path + if [ "$diagnostics" == "1" ]; then + echo "build path: $build_path" + fi + + ###### delete existing object file ######################################## + rm -f "$out_file_base.o" + rm -f "$out_file_base.obj" + + ###### final flags ######################################################## + local final_flags="-c -I$src_path ${flags}" + + + ###### compile ############################################################ + if [ "$diagnostics" == "1" ]; then + echo "cmp $final_in_file -- ${all_opts[@]}" + echo $compiler "$final_in_file" $final_flags + fi + if [ "$compiler" == "clang" ]; then + echo "$file_base" + fi + $compiler "$final_in_file" $final_flags + + # return of status from compiler is automatic here. +} + +###### Link ################################################################### + +function bld_link { + ###### parse arguments #################################################### + local out_name=$1 + local in_files=() + for ((i=2; i<=$#; i+=1)); do + if [ "${!i}" == "--" ]; then + break + fi + in_files+=(${!i}) + done + local opts=() + for ((i+=1; i<=$#; i+=1)); do + opts+=(${!i}) + done + if [ "$out_name" == "" ]; then + echo "link: missing output name" + return 1 + fi + if [ "${#in_files}" == "0" ]; then + echo "link: missing input file(s)" + return 1 + fi + + ###### finish options ##################################################### + local impl_opts=($(bld_implicit_opts)) + local all_opts=($(bld_dedup ${opts[@]} ${impl_opts[@]})) + + ###### diagnostics ######################################################## + local diagnostics=$(bld_has_opt diagnostics ${all_opts[@]}) + + ###### sort in files ###################################################### + local in_src=() + local in_obj=() + local in_lib=() + for ((i=0; i<${#in_files[@]}; i+=1)); do + local file="${in_files[i]}" + local ext="${file##*.}" + if [[ "$ext" == "c" || "$ext" == "cpp" ]]; then + in_src+=($file) + elif [[ "$ext" == "o" || "$ext" == "obj" ]]; then + in_obj+=($file) + elif [[ "$ext" == "lib" ]]; then + in_lib+=($file) + else + echo "WARNING: ignoring unrecognized file type $file" + fi + done + + ###### auto correct object files ########################################## + local dot_ext_obj=$(bld_ext_obj) + for ((i=0; i<${#in_obj[@]}; i+=1)); do + local file_name="${in_obj[i]}" + local base_name="${file_name%.*}" + in_obj[$i]="$base_name$dot_ext_obj" + done + + ###### compile source files ############################################### + for ((i=0; i<${#in_src[@]}; i+=1)); do + bld_compile "${in_src[i]}" ${all_opts[@]} + local status=$? + if [ $status -ne 0 ]; then + return $status + fi + done + + ###### intermediate object files ########################################## + local interm_obj=() + for ((i=0; i<${#in_src[@]}; i+=1)); do + local file_name="${in_src[i]}" + local base_name="${file_name##*/}" + local base_name_no_ext="${base_name%.*}" + interm_obj+=($base_name_no_ext$dot_ext_obj) + done + + ###### get real flags ##################################################### + local flags=$(bld_flags_from_opts $linker_flags_path ${all_opts[@]}) + + ###### out file name ###################################################### + local dot_ext_out="" + local is_dll=$(bld_has_opt dll ${all_opts[@]}) + if [ "$is_dll" == "0" ]; then + dot_ext_out=$(bld_ext_exe) + else + dot_ext_out=$(bld_ext_dll) + fi + out_file="$out_name$dot_ext_out" + + ###### move to output folder ############################################## + mkdir -p "$build_path" + cd $build_path + if [ "$diagnostics" == "1" ]; then + echo "build path: $build_path" + fi + + ###### final files to linker ############################################## + local final_in_files="${interm_obj[@]} ${in_obj[@]} ${in_lib[@]}" + + ###### set first diagnostic string ######################################## + local first_diagnostic_string="lnk $final_in_files -- ${all_opts[@]}" + + ###### link ############################################################### + local status=0 + local invokation="" + if [[ "$linker" == "link" || "$linker" == "lld-link" ]]; then + invokation="$linker -OUT:$out_file $flags $final_in_files" + elif [ "$linker" == "clang" ]; then + invokation="$linker -o \"$out_file\" $flags $final_in_files" + else + echo "ERROR: invokation not defined for this linker" + status=1 + fi + if [ "$invokation" != "" ]; then + if [ "$diagnostics" == "1" ]; then + echo $first_diagnostic_string + echo $invokation + fi + echo "$out_file" + $invokation + status=$? + fi + return $status +} + +###### Library ################################################################ + +function bld_lib { + ###### parse arguments #################################################### + local out_name=$1 + local in_files=() + for ((i=2; i<=$#; i+=1)); do + if [ "${!i}" == "--" ]; then + break + fi + in_files+=(${!i}) + done + local opts=() + for ((i+=1; i<=$#; i+=1)); do + opts+=(${!i}) + done + if [ "$out_name" == "" ]; then + echo "lib: missing output name" + return 1 + fi + if [ "${#in_files}" == "0" ]; then + echo "lib: missing input file(s)" + return 1 + fi + + ###### finish options ##################################################### + local impl_opts=($(bld_implicit_opts)) + local all_opts=($(bld_dedup ${opts[@]} ${impl_opts[@]})) + + ###### diagnostics ######################################################## + local diagnostics=$(bld_has_opt diagnostics ${all_opts[@]}) + + ###### sort in files ###################################################### + local in_src=() + local in_obj=() + for ((i=0; i<${#in_files[@]}; i+=1)); do + local file="${in_files[i]}" + local ext="${file##*.}" + if [[ "$ext" == "c" || "$ext" == "cpp" ]]; then + in_src+=($file) + elif [[ "$ext" == "o" || "$ext" == "obj" ]]; then + in_obj+=($file) + else + echo "WARNING: ingnoring unrecgonized file type $file" + fi + done + + ###### auto correct object files ########################################## + local dot_ext_obj=$(bld_ext_obj) + for ((i=0; i<${#in_obj[@]}; i+=1)); do + local file_name="${in_obj[i]}" + local base_name="${file_name%.*}" + in_obj[$i]=$base_name$dot_ext_obj + done + + ###### compile source files ############################################### + for ((i=0; i<${#in_src[@]}; i+=1)); do + bld_compile "${in_src[i]}" ${all_opts[@]} + local status=$? + if [ $status -ne 0 ]; then + return $status + fi + done + + ###### intermediate object files ########################################## + local interm_obj=() + for ((i=0; i<${#in_src[@]}; i+=1)); do + local file_name="${in_src[i]}" + local base_name="${file_name##*/}" + local base_name_no_ext="${base_name%.*}" + interm_obj+=($base_name_no_ext$dot_ext_obj) + done + + ###### out file name ###################################################### + local out_file="" + if [ "$os" == "windows" ]; then + out_file="$out_name.lib" + elif [ "$os" == "linux" || "$os" == "mac" ]; then + out_file="lib$out_name.a" + else + echo "ERROR: static library output not defined for OS: $os" + fi + + ###### final library build input files #################################### + local final_in_files="${interm_obj[@]} ${in_obj[@]}" + + ###### move to output folder ############################################## + mkdir -p "$build_path" + cd $build_path + if [ "$diagnostics" == "1" ]; then + echo "build path: $build_path" + fi + + ###### set first diagnostic string ######################################## + local first_diagnostic_string="lib $final_in_files -- ${all_opts[@]}" + + ###### build library ###################################################### + local status=0 + if [ "$os" == "windows" ]; then + if [ "$diagnostics" == "1" ]; then + echo $first_diagnostic_string + echo lib -nologo -OUT:"$out_file" $final_in_files + fi + echo "$out_file" + lib -nologo -OUT:"$out_file" $final_in_files + status=$? + elif [ "$os" == "linux" || "$os" == "mac" ]; then + # TODO(allen): invoke ar here - make sure to delete the original .a first + # because ar does not (seem) to replace the output file, just append + echo "TODO: implement ar path in bld_core.sh:bld_lib" + status=1 + else + echo "ERROR: static library invokation not defined for OS: $os" + status=1 + fi + + return $status +} + +###### Unit ################################################################### + +function bld_unit { + ###### parse arguments #################################################### + local main_file=$1 + local opts=() + for ((i=2; i<=$#; i+=1)); do + opts+=(${!i}) + done + if [ "$main_file" == "" ]; then + echo "unit: missing main file" + return 1 + fi + + ###### set out name ####################################################### + local out_name="" + if [ "${#opts}" == "0" ]; then + local file_base=${main_file##*/} + local file_base_no_ext=${file_base%.*} + out_name=$file_base_no_ext + else + out_name="${opts[0]}" + fi + + ###### finish options ##################################################### + local src_opts=$(bld_opts_from_src $main_file) + local impl_opts=($(bld_implicit_opts)) + local all_opts=($(bld_dedup $out_name ${opts[@]} ${src_opts[@]} ${impl_opts[@]})) + + ###### link ############################################################### + bld_link $out_name $main_file ${in_files[@]} -- ${all_opts[@]} +} + +###### Special Ifs ############################################################ + +function bld_ext_obj { + echo $(bld_flags_from_opts $file_extensions_path $compiler obj) +} +function bld_ext_exe { + echo $(bld_flags_from_opts $file_extensions_path $os exe) +} +function bld_ext_dll { + echo $(bld_flags_from_opts $file_extensions_path $os dll) +} + +###### Get Paths ############################################################## +if [ ! -f "$bld_path/bld_core.sh" ]; then + echo bld_path set incorrectly + exit 1 +fi +local_path="$bld_path/local" + +###### Load Locals ############################################################ +bld_load_local_opts + + +# NOTES - for future iterations of this system +# + The "source" approach creates problems for locating the bld path because +# when a script is "sourced" it inherits the $0 from the "caller". Two ideas: +# 1. There may be a way to fix this issue relating to passing parameters +# to the "sourced" script +# 2. Setup a locator script that can be called the normal way before sourcing +# the core to save the bld_path for the core to see +# + It would be nice to include an automatic slash fixer \ -> / + diff --git a/bin/bld/bld_init.sh b/bin/bld/bld_init.sh new file mode 100644 index 0000000..9cca46b --- /dev/null +++ b/bin/bld/bld_init.sh @@ -0,0 +1,6 @@ +#!/bin/bash + +bld_path=$(dirname "$0") +local_path="$bld_path/local" +mkdir -p "$local_path" +cp $bld_path/default.bld_params.sh $local_path/bld_params.sh diff --git a/bin/bld/default.bld_params.sh b/bin/bld/default.bld_params.sh new file mode 100644 index 0000000..cbd4cc2 --- /dev/null +++ b/bin/bld/default.bld_params.sh @@ -0,0 +1,16 @@ +#!/bin/bash + +compiler="cl" +compile_mode="debug" +arch="x64" +linker="lld-link" +ctx_opts="" + +cd $bld_path/../.. +root_path=$PWD + +build_path="$root_path/build" +src_path="$root_path/src" +compiler_flags_path="$root_path/bin/compiler_flags.txt" +linker_flags_path="$root_path/bin/linker_flags.txt" +file_extensions_path="$root_path/bin/file_extensions.txt" diff --git a/bin/build_experiments.sh b/bin/build_experiments.sh new file mode 100644 index 0000000..c12243a --- /dev/null +++ b/bin/build_experiments.sh @@ -0,0 +1,7 @@ +#!/bin/bash + +bld_path="$(dirname $(realpath "$0"))"/bld +source "$bld_path/bld_core.sh" + +bld_print_implicit_opts +bld_unit $src_path/standalone_srgb_antialiasing_experiments.c experiments diff --git a/bin/compiler_flags.txt b/bin/compiler_flags.txt new file mode 100644 index 0000000..6be10b7 --- /dev/null +++ b/bin/compiler_flags.txt @@ -0,0 +1,13 @@ +###### CL ##################################################################### +cl>-FC +cl>-GR- +cl>-EHa +cl>-nologo + +###### Clang ################################################################## +clang>-Wno-writable-strings +clang>-Wno-switch + +###### Debug ################################################################## +cl>debug>-Zi + diff --git a/bin/file_extensions.txt b/bin/file_extensions.txt new file mode 100644 index 0000000..ed37379 --- /dev/null +++ b/bin/file_extensions.txt @@ -0,0 +1,10 @@ +obj>cl>.obj +obj>clang>.o +obj>gcc>.o + +exe>windows>.exe +dll>windows>.dll +dll>linux>.so +dll>mac>.so + + diff --git a/bin/linker_flags.txt b/bin/linker_flags.txt new file mode 100644 index 0000000..8df8922 --- /dev/null +++ b/bin/linker_flags.txt @@ -0,0 +1,18 @@ +###### link ################################################################### +lld-link>-nologo +lld-link>-DEFAULTLIB:libcmt +lld-link>-OPT:REF +lld-link>-INCREMENTAL:NO +lld-link>-DEBUG +lld-link>x64>-MACHINE:X64 +lld-link>console>-SUBSYSTEM:CONSOLE +lld-link>graphical>-SUBSYSTEM:WINDOWS + +windows>Winmm.lib +windows>Userenv.lib +windows>Advapi32.lib +windows>graphical>User32.lib +windows>graphical>Gdi32.lib + +freetype>libfreetype.lib + diff --git a/project.4coder b/project.4coder new file mode 100644 index 0000000..ab408dd --- /dev/null +++ b/project.4coder @@ -0,0 +1,32 @@ +version(2); +project_name = "foo"; +patterns = { +"*.c", +"*.cpp", +"*.h", +"*.m", +"*.bat", +"*.sh", +"*.4coder", +}; +blacklist_patterns = { +".*", +}; +load_paths_base = { + { ".", .relative = true, .recursive = true, }, +}; +load_paths = { + .win = load_paths_base, +}; + +commands = { + .build = { .out = "*compilation*", .footer_panel = true, .save_dirty_files = true, + .win = "git_bash bin/build_experiments.sh", }, + .run = { .out = "*run*", .footer_panel = false, .save_dirty_files = false, + .win = "pushd build & experiments", }, +}; + +fkey_command = { +.F1 = "build", +.F2 = "run", +}; diff --git a/src/standalone_srgb_antialiasing_experiments.c b/src/standalone_srgb_antialiasing_experiments.c new file mode 100644 index 0000000..82dc2c3 --- /dev/null +++ b/src/standalone_srgb_antialiasing_experiments.c @@ -0,0 +1,828 @@ +#include + + +//////////////////////////////// +//- Mini-Base + +#include +typedef int8_t S8; +typedef int16_t S16; +typedef int32_t S32; +typedef int64_t S64; +typedef uint8_t U8; +typedef uint16_t U16; +typedef uint32_t U32; +typedef uint64_t U64; +typedef S8 B8; +typedef S16 B16; +typedef S32 B32; +typedef S64 B64; +typedef float F32; +typedef double F64; + +#define AssertBreak() (*(volatile int*)0 = 0) +#define Assert(c) do{ if (!(c)){ AssertBreak(); } }while(0) + +#define U64FromPtr(ptr) (U64)(ptr) +#define PtrFromU64(ptr) (void*)(x) + +#define Member(T,m) ((T*)0)->m +#define PtrOffsetOf(T,m) (void*)(&Member(T,m)) +#define OffsetOf(T,m) U64FromPtr(&Member(T,m)) + +#define allocate_array(T,c) (T*)(malloc(sizeof(T)*(c))) + + +//////////////////////////////// +//- Types, Functions & Globals + +static void error_message(char *msg); + +//- wgl stuff +static HGLRC graphics_context = 0; +static HWND graphics_window = 0; +static HDC graphics_dc = 0; +static F32 graphics_w = 0; +static F32 graphics_h = 0; + +static void wgl_helper_make_graphics_window(HINSTANCE hInstance); +static void wgl_helper_begin_render(void); +static void wgl_helper_end_render(void); + +//- opengl render stuff +typedef struct Vertex{ + F32 px; + F32 py; + F32 cr; + F32 cg; + F32 cb; + F32 ca; +} Vertex; + + +static void opengl_render_init(void); + +static void opengl_draw_test_geometry(Vertex *v, U64 count); + + +//////////////////////////////// +//- GL Definitions + +//- gl types + +typedef U32 GLenum; +typedef F32 GLfloat; +typedef U32 GLbitfield; +typedef U32 GLuint; +typedef S32 GLint; +typedef S32 GLsizei; +typedef S64 GLsizeiptr; +typedef S64 GLintptr; +typedef char GLchar; +typedef unsigned char GLboolean; + +//- gl constants + +#define GL_COLOR_BUFFER_BIT 0x00004000 + + +#define GL_TRIANGLES 0x0004 + +#define GL_FLOAT 0x1406 + +#define GL_MULTISAMPLE 0x809D + +#define GL_STREAM_DRAW 0x88E0 + +#define GL_ARRAY_BUFFER 0x8892 + +#define GL_FRAGMENT_SHADER 0x8B30 +#define GL_VERTEX_SHADER 0x8B31 + +#define GL_COMPILE_STATUS 0x8B81 +#define GL_LINK_STATUS 0x8B82 +#define GL_INFO_LOG_LENGTH 0x8B84 + +#define GL_SRGB 0x8C40 + +//- gl func x-list + +#define GL_FUNC_X_LIST() \ +/* common stuff */ \ +X(glGetError, GLenum, (void)) \ +X(glViewport, void, (GLint x, GLint y, GLsizei width, GLsizei height)) \ +X(glScissor, void, (GLint x, GLint y, GLsizei width, GLsizei height)) \ +X(glClearColor, void, (GLfloat r,GLfloat g,GLfloat b,GLfloat a)) \ +X(glClear, void, (GLbitfield mask)) \ +X(glBlendFunc, void, (GLenum sfactor, GLenum dfactor)) \ +X(glBlendFuncSeparate, void, (GLenum srcRGB,GLenum dstRGB,GLenum srcAlpha,GLenum dstAlpha)) \ +X(glBlendEquation, void, (GLenum mode)) \ +X(glBlendEquationSeparate, void, (GLenum modeRGB, GLenum modeAlpha)) \ +X(glDisable, void, (GLenum cap)) \ +X(glEnable, void, (GLenum cap)) \ +X(glPixelStorei, void, (GLenum pname, GLint param)) \ +X(glReadPixels, void, (GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, void *pixels)) \ +/* buffers */ \ +X(glGenBuffers, void, (GLsizei n, GLuint *buffers)) \ +X(glDeleteBuffers, void, (GLsizei n, const GLuint *buffers)) \ +X(glBindBuffer, void, (GLenum target, GLuint buffer)) \ +X(glBufferData, void, (GLenum target, GLsizeiptr size, const void *data, GLenum usage)) \ +X(glBufferSubData, void, (GLenum target, GLintptr offset, GLsizeiptr size, const void *data)) \ +X(glGenVertexArrays, void, (GLsizei n, GLuint *arrays)) \ +X(glDeleteVertexArrays, void, (GLsizei n, const GLuint *arrays)) \ +X(glBindVertexArray, void, (GLuint array)) \ +/* textures */ \ +X(glActiveTexture, void, (GLenum texture)) \ +X(glDeleteTextures, void, (GLsizei n, const GLuint *textures)) \ +X(glBindTexture, void, (GLenum target, GLuint texture)) \ +X(glIsTexture, GLboolean, (GLuint texture)) \ +X(glTexParameteri, void, (GLenum target, GLenum pname, GLint param)) \ +X(glTexImage1D, void, (GLenum target, GLint level, GLint internalformat, GLsizei width, GLint border, GLenum format, GLenum type, const void *pixels)) \ +X(glTexImage2D, void, (GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const void *pixels)) \ +X(glTexSubImage1D, void, (GLenum target, GLint level, GLint xoffset, GLsizei width, GLenum format, GLenum type, const void *pixels)) \ +X(glTexSubImage2D, void, (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const void *pixels)) \ +X(glTexImage2DMultisample, void, (GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height, GLboolean fixedsamplelocations)) \ +/* shaders */ \ +X(glAttachShader, void, (GLuint program, GLuint shader)) \ +X(glCompileShader, void, (GLuint shader)) \ +X(glCreateProgram, GLuint, (void)) \ +X(glCreateShader, GLuint, (GLenum type)) \ +X(glDeleteProgram, void, (GLuint program)) \ +X(glDeleteShader, void, (GLuint shader)) \ +X(glGetProgramiv, void, (GLuint program, GLenum pname, GLint *params)) \ +X(glGetProgramInfoLog, void, (GLuint program, GLsizei bufSize, GLsizei *length, GLchar *infoLog)) \ +X(glGetShaderiv, void, (GLuint shader, GLenum pname, GLint *params)) \ +X(glGetShaderInfoLog, void, (GLuint shader, GLsizei bufSize, GLsizei *length, GLchar *infoLog)) \ +X(glLinkProgram, void, (GLuint program)) \ +X(glShaderSource, void, (GLuint shader, GLsizei count, const GLchar *const*string, const GLint *length)) \ +X(glUseProgram, void, (GLuint program)) \ +X(glGetUniformLocation, GLint, (GLuint program, const GLchar *name)) \ +/* draw calls */ \ +X(glDrawArrays, void, (GLenum mode, GLint first, GLsizei count)) \ +X(glDrawElements, void, (GLenum mode, GLsizei count, GLenum type, const void *indices)) \ +X(glDrawArraysInstanced, void, (GLenum mode, GLint first, GLsizei count, GLsizei instancecount)) \ +X(glDrawElementsInstanced, void, (GLenum mode, GLsizei count, GLenum type, const void *indices, GLsizei instancecount)) \ +X(glEnableVertexAttribArray, void, (GLuint index)) \ +X(glDisableVertexAttribArray, void, (GLuint index)) \ +X(glVertexAttribPointer, void, (GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const void *pointer)) \ +X(glVertexAttribIPointer, void, (GLuint index, GLint size, GLenum type, GLsizei stride, const void *pointer)) \ +X(glVertexAttribDivisor, void, (GLuint index, GLuint divisor)) \ +X(glUniform1f, void, (GLint location, GLfloat v0)) \ +X(glUniform2f, void, (GLint location, GLfloat v0, GLfloat v1)) \ +X(glUniform3f, void, (GLint location, GLfloat v0, GLfloat v1, GLfloat v2)) \ +X(glUniform4f, void, (GLint location, GLfloat v0, GLfloat v1, GLfloat v2, GLfloat v3)) \ +X(glUniform1i, void, (GLint location, GLint v0)) \ +X(glUniform1fv, void, (GLint location, GLsizei count, const GLfloat *value)) \ +X(glUniform2fv, void, (GLint location, GLsizei count, const GLfloat *value)) \ +X(glUniform3fv, void, (GLint location, GLsizei count, const GLfloat *value)) \ +X(glDrawBuffers, void, (GLsizei n, const GLenum *bufs)) \ +/* framebuffers */ \ +X(glGenFramebuffers, void, (GLsizei n, GLuint *framebuffers)) \ +X(glDeleteFramebuffers, void, (GLsizei n, const GLuint *framebuffers)) \ +X(glBindFramebuffer, void, (GLenum target, GLuint framebuffer)) \ +X(glIsFramebuffer, GLboolean, (GLuint framebuffer)) \ +X(glCheckFramebufferStatus, GLenum, (GLenum target)) \ +X(glFramebufferTexture1D, void, (GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level)) \ +X(glFramebufferTexture2D, void, (GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level)) \ +X(glFramebufferTexture3D, void, (GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level, GLint zoffset)) \ +X(glFramebufferRenderbuffer, void, (GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer)) \ +X(glFramebufferTexture, void, (GLenum target, GLenum attachment, GLuint texture, GLint level)) \ +X(glBlitFramebuffer, void, (GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter)) \ +X(glGetFramebufferAttachmentParameteriv, void, (GLenum target, GLenum attachment, GLenum pname, GLint *params)) + +//- gl function types + +#define X(N,R,P) typedef R GL_##N P; +GL_FUNC_X_LIST() +#undef X + +//- gl function pointers + +#define X(N,R,P) static GL_##N * N = 0; +GL_FUNC_X_LIST() +#undef X + + +//////////////////////////////// +//- OpenGL Helper Declarations + +static GLuint opengl_helper_make_shader(char *src, GLenum shader_type); +static GLuint opengl_helper_make_program(GLuint *shaders, U32 count); + + +//////////////////////////////// +//- OpenGL Render + +static char test_vshader[] = +"#version 330\n" +"uniform vec2 u_view_xform;\n" +"layout (location = 0) in vec2 v_p;\n" +"layout (location = 1) in vec4 v_c;\n" +"out vec4 f_c;\n" +"void main(){\n" +"vec2 norm_pos = v_p*u_view_xform + vec2(-1.0, -1.0);\n" +"gl_Position = vec4(norm_pos, 0.0, 1.0);\n" +"f_c = v_c;\n" +"}\n" +; + +static char test_fshader[] = +"#version 330\n" +"in vec4 f_c;\n" +"out vec4 out_color;\n" +"void main(){\n" +"out_color = f_c;\n" +"}\n" +""; + +GLuint test_program = 0; +GLint test_u_view_xform = -1; + +static void +opengl_render_init(void){ + //- setup test shader program + { + GLuint shaders[2] = {0}; + shaders[0] = opengl_helper_make_shader(test_vshader, GL_VERTEX_SHADER); + shaders[1] = opengl_helper_make_shader(test_fshader, GL_FRAGMENT_SHADER); + test_program = opengl_helper_make_program(shaders, 2); + test_u_view_xform = glGetUniformLocation(test_program, "u_view_xform"); + } + + { + GLuint vao = 0; + glGenVertexArrays(1, &vao); + glBindVertexArray(vao); + } + + { + GLuint vertex_buffer = 0; + glGenBuffers(1, &vertex_buffer); + glBindBuffer(GL_ARRAY_BUFFER, vertex_buffer); + } + + if (glGetError() != 0){ + error_message("error in opengl renderer initialization"); + } +} + +static void +opengl_draw_test_geometry(Vertex *v, U64 count){ + glBufferData(GL_ARRAY_BUFFER, sizeof(*v)*count, v, GL_STREAM_DRAW); + + glUseProgram(test_program); + glUniform2f(test_u_view_xform, 2.f/graphics_w, 2.f/graphics_h); + + glEnableVertexAttribArray(0); + glVertexAttribPointer(0, 2, GL_FLOAT, 0, + sizeof(Vertex), PtrOffsetOf(Vertex, px)); + + glEnableVertexAttribArray(1); + glVertexAttribPointer(1, 4, GL_FLOAT, 0, + sizeof(Vertex), PtrOffsetOf(Vertex, cr)); + + glDrawArrays(GL_TRIANGLES, 0, count); +} + + + +//////////////////////////////// +//- Main + +int +WinMain(HINSTANCE hInstance, + HINSTANCE hPrevInstance, + LPSTR lpCmdLine, + int nShowCmd){ + wgl_helper_make_graphics_window(hInstance); + + U64 frame_counter = 0; + for (;;){ + // wait for input + MSG msg = {0}; + BOOL get_message = GetMessage(&msg, 0, 0, 0); + if (get_message <= 0){ + break; + } + DispatchMessage(&msg); + + // begin render + wgl_helper_begin_render(); + + // initialization + if (frame_counter == 0){ + opengl_render_init(); + } + + // screen layout + F32 margin = 10.f; + F32 center_x = graphics_w*0.5f; + F32 divider_half_w = 3.f; + F32 divider_min_x = (F32)(S32)(center_x - divider_half_w); + F32 divider_max_x = divider_min_x + 2.f*divider_half_w; + + // render + { + glViewport(0, 0, (S32)graphics_w, (S32)graphics_h); + + // black background everywhere + glClearColor(0.f, 0.f, 0.f, 1.f); + glClear(GL_COLOR_BUFFER_BIT); + + // draw divider + { + Vertex v[6]; + v[0].px = divider_min_x; v[0].py = 0.f; + v[1].px = divider_min_x; v[1].py = graphics_h; + v[2].px = divider_max_x; v[2].py = 0.f; + v[3].px = v[1].px; v[3].py = v[1].py; + v[4].px = v[2].px; v[4].py = v[2].py; + v[5].px = divider_max_x; v[5].py = graphics_h; + for (U32 i = 0; i < 6; i += 1){ + v[i].cr = 1.f; + v[i].cg = 1.f; + v[i].cb = 1.f; + v[i].ca = 1.f; + } + + opengl_draw_test_geometry(v, 6); + } + + } + + // end render + wgl_helper_end_render(); + + // frame counter + frame_counter += 1; + } + + return(0); +} + + +//////////////////////////////// +//- OpenGL Helpers + +static GLuint +opengl_helper_make_shader(char *src, GLenum shader_type){ + // create shader + GLuint shader = glCreateShader(shader_type); + + GLenum error = glGetError(); + + // set source + glShaderSource(shader, 1, &src, 0); + + // compile + glCompileShader(shader); + + // read log + GLint info_log_length = 0; + glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &info_log_length); + if (info_log_length > 0){ + char *buffer = allocate_array(char, info_log_length + 1); + GLint length = 0; + glGetShaderInfoLog(shader, info_log_length + 1, &length, buffer); + error_message(buffer); + } + + // check status + { + GLint compile_status = 0; + glGetShaderiv(shader, GL_COMPILE_STATUS, &compile_status); + if (compile_status == 0){ + error_message("could not create one of the shaders"); + } + } + + return(shader); +} + +static GLuint +opengl_helper_make_program(GLuint *shaders, U32 count){ + // link program + GLuint program = glCreateProgram(); + for (U32 i = 0; i < count; i += 1){ + glAttachShader(program, shaders[i]); + } + glLinkProgram(program); + + // read log + GLint info_log_length = 0; + glGetProgramiv(program, GL_INFO_LOG_LENGTH, &info_log_length); + if (info_log_length > 0){ + char *buffer = allocate_array(char, info_log_length + 1); + GLint length = 0; + glGetProgramInfoLog(program, info_log_length + 1, &length, buffer); + error_message(buffer); + } + + // check status + { + GLint link_status = 0; + glGetProgramiv(program, GL_LINK_STATUS, &link_status); + if (link_status == 0){ + error_message("could not create one of the GPU programs"); + } + } + + return(program); +} + + +//////////////////////////////// +//- WGL Definitions + +#define WGL_DRAW_TO_WINDOW_ARB 0x2001 +#define WGL_ACCELERATION_ARB 0x2003 +#define WGL_SWAP_METHOD_ARB 0x2007 +#define WGL_SUPPORT_OPENGL_ARB 0x2010 +#define WGL_DOUBLE_BUFFER_ARB 0x2011 +#define WGL_PIXEL_TYPE_ARB 0x2013 +#define WGL_COLOR_BITS_ARB 0x2014 +#define WGL_RED_BITS_ARB 0x2015 +#define WGL_GREEN_BITS_ARB 0x2017 +#define WGL_BLUE_BITS_ARB 0x2019 +#define WGL_FULL_ACCELERATION_ARB 0x2027 +#define WGL_SWAP_EXCHANGE_ARB 0x2028 +#define WGL_TYPE_RGBA_ARB 0x202B + +//- WGL_ARB_create_context constants + +#define WGL_CONTEXT_MAJOR_VERSION_ARB 0x2091 +#define WGL_CONTEXT_MINOR_VERSION_ARB 0x2092 +#define WGL_CONTEXT_FLAGS_ARB 0x2094 +#define WGL_CONTEXT_PROFILE_MASK_ARB 0x9126 +#define WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB 0x0002 +#define WGL_CONTEXT_CORE_PROFILE_BIT_ARB 0x00000001 + +//- wgl funcs x-list + +#define WGL_FUNCS_X_LIST() \ +X(wglCreateContext, HGLRC, (HDC dc)) \ +X(wglDeleteContext, BOOL, (HGLRC glrc)) \ +X(wglMakeCurrent, BOOL, (HDC dc,HGLRC glrc)) \ +X(wglGetProcAddress, PROC, (LPCSTR name)) + +//- wgl extension funcs x-list + +#define WGL_EXT_FUNCS_X_LIST() \ +X(wglChoosePixelFormatARB, BOOL, (HDC,int*,FLOAT*,UINT,int*,UINT*)) \ +X(wglCreateContextAttribsARB, HGLRC, (HDC dc,HGLRC share,int*atri)) + + +//- wgl function types + +#define X(N,R,P) typedef R W32_##N P; +WGL_FUNCS_X_LIST() +WGL_EXT_FUNCS_X_LIST() +#undef X + +//- wgl function pointers + +#define X(N,R,P) static W32_##N * w32_##N = 0; +WGL_FUNCS_X_LIST() +WGL_EXT_FUNCS_X_LIST() +#undef X + + +//////////////////////////////// +//- WGL Helper + +#define GET_PROC_ADDR(v,m,s) (*(PROC*)(&(v))) = GetProcAddress((m),(s)) +#define WGL_GET_PROC_ADDR(v,s) (*(PROC*)(&(v))) = w32_wglGetProcAddress(s) +#define GL_FULL_PROC_ADDR(v,m,s) (*(PROC*)(&(v))) = wgl_helper_load((m),(s)) + +#define BOOTSTRAP_WINDOW_CLASS_NAME L"mr4th-opengl-bootstrap" +#define GRAPHICS_WINDOW_CLASS_NAME L"mr4th-opengl-graphics" + +static LRESULT +w32_graphics_window_proc(HWND wnd, + UINT msg, + WPARAM wparam, + LPARAM lparam){ + LRESULT result = 0; + switch (msg){ + case WM_CLOSE: + { + ExitProcess(0); + }break; + + case WM_SIZE: + { + // Here we need to re-render IF we want the window not + // to have ugly black borders during resizing. + + // begin render + HDC dc = GetDC(wnd); + w32_wglMakeCurrent(dc, graphics_context); + + // render + glClearColor(1.f, 0.f, 1.f, 1.f); + glClear(GL_COLOR_BUFFER_BIT); + + // end render + SwapBuffers(dc); + ReleaseDC(wnd, dc); + }break; + + default: + { + result = DefWindowProcW(wnd, msg, wparam, lparam); + }break; + } + return(result); +} + +static PROC +wgl_helper_load(HMODULE opengl_module, char *name){ + PROC result = (PROC)GetProcAddress(opengl_module, name); + if (result == 0){ + result = (PROC)w32_wglGetProcAddress(name); + } + return(result); +} + + +static void +wgl_helper_make_graphics_window(HINSTANCE hInstance){ + + //- load opengl module + HMODULE w32_opengl_module = LoadLibraryA("opengl32.dll"); + if (w32_opengl_module == 0){ + error_message("failed to initialize opengl32.dll"); + } + + //- load & check wgl functions + { +#define X(N,R,P) GET_PROC_ADDR(w32_##N, w32_opengl_module, #N); + WGL_FUNCS_X_LIST() +#undef X + + B32 missing_wgl_func = 0; +#define X(N,R,P) if (w32_##N == 0){ missing_wgl_func = 1; } + WGL_FUNCS_X_LIST() +#undef X + + if (missing_wgl_func){ + error_message("failed to load wgl function(s)"); + } + } + + // register bootstrap class + WNDCLASSW bs_wnd_class = {0}; + bs_wnd_class.lpfnWndProc = DefWindowProcW; + bs_wnd_class.hInstance = hInstance; + bs_wnd_class.lpszClassName = BOOTSTRAP_WINDOW_CLASS_NAME; + ATOM bs_atom = RegisterClassW(&bs_wnd_class); + if (bs_atom == 0){ + error_message("failed to register bootstrap class"); + } + + // create bootstrap window + HWND bootstrap_window = + CreateWindowW(BOOTSTRAP_WINDOW_CLASS_NAME, + L"mr4th-opengl-bootstrap", + 0, 0, 0, 0, 0, // style, x,y,w,h + 0, 0, hInstance, 0 // parent, menu, inst, param + ); + if (bootstrap_window == 0){ + error_message("failed to create bootstrap window"); + } + + //- load wgl extension functions + { + HDC dc = GetDC(bootstrap_window); + + // create bootstrap context + HGLRC hglrc = 0; + { + PIXELFORMATDESCRIPTOR format_desc = {0}; + format_desc.nSize = sizeof(format_desc); + format_desc.nVersion = 1; + format_desc.dwFlags = PFD_SUPPORT_OPENGL; + format_desc.cColorBits = 24; + format_desc.cRedBits = 8; + format_desc.cRedShift = 0; + format_desc.cGreenBits = 8; + format_desc.cGreenShift = 8; + format_desc.cBlueBits = 8; + format_desc.cBlueShift = 16; + + int format_idx = ChoosePixelFormat(dc, &format_desc); + if (format_idx != 0){ + BOOL spf = SetPixelFormat(dc, format_idx, &format_desc); + if (spf){ + hglrc = w32_wglCreateContext(dc); + } + } + } + + if (hglrc == 0){ + error_message("failed to create bootstrap context"); + } + + // load wgl extension functions + w32_wglMakeCurrent(dc, hglrc); +#define X(N,R,P) WGL_GET_PROC_ADDR(w32_##N, #N); + WGL_EXT_FUNCS_X_LIST() +#undef X + w32_wglMakeCurrent(0, 0); + + // check wgl extension functions + B32 missing_wgl_ext_func = 0; +#define X(N,R,P) if (w32_##N == 0){ missing_wgl_ext_func = 1; } + WGL_EXT_FUNCS_X_LIST() +#undef X + + // report error + if (missing_wgl_ext_func){ + error_message("failed to load wgl extension function(s)"); + } + + // delete context + { + BOOL delete_context = w32_wglDeleteContext(hglrc); + Assert(delete_context); + } + + // cleanup dc + ReleaseDC(bootstrap_window, dc); + } + + //- destroy bootstrap window, and class + { + BOOL destroy_window = DestroyWindow(bootstrap_window); + Assert(destroy_window); + BOOL unregister = UnregisterClassW(BOOTSTRAP_WINDOW_CLASS_NAME, hInstance); + Assert(unregister); + } + + //- register graphics class + WNDCLASSW gr_wnd_class = {0}; + gr_wnd_class.lpfnWndProc = w32_graphics_window_proc; + gr_wnd_class.hInstance = hInstance; + gr_wnd_class.lpszClassName = GRAPHICS_WINDOW_CLASS_NAME; + ATOM gr_atom = RegisterClassW(&gr_wnd_class); + if (gr_atom == 0){ + error_message("failed to register graphics class"); + } + + //- create graphics context + int format_idx = 0; + + { + // create dummy window + HWND dummy_window = + CreateWindowW(GRAPHICS_WINDOW_CLASS_NAME, + L"DUMMY", + WS_TILEDWINDOW, + CW_USEDEFAULT, CW_USEDEFAULT, // x,y + CW_USEDEFAULT, CW_USEDEFAULT, // w,h + 0, 0, hInstance, 0 // parent, menu, inst, param + ); + if (dummy_window == 0){ + error_message("failed to create dummy window"); + } + + + HDC dc = GetDC(dummy_window); + + // choose pixel format + int format_attribs[] = { + WGL_DRAW_TO_WINDOW_ARB, TRUE, + WGL_ACCELERATION_ARB, WGL_FULL_ACCELERATION_ARB, + WGL_SWAP_METHOD_ARB, WGL_SWAP_EXCHANGE_ARB, + WGL_SUPPORT_OPENGL_ARB, TRUE, + WGL_DOUBLE_BUFFER_ARB, TRUE, + WGL_PIXEL_TYPE_ARB, WGL_TYPE_RGBA_ARB, + WGL_COLOR_BITS_ARB, 24, + WGL_RED_BITS_ARB, 8, + WGL_GREEN_BITS_ARB, 8, + WGL_BLUE_BITS_ARB, 8, + 0 + }; + + UINT num_formats = 0; + BOOL cpf = w32_wglChoosePixelFormatARB(dc, format_attribs, 0, + 1, &format_idx, &num_formats); + if (cpf && num_formats > 0){ + + // set pixel format + PIXELFORMATDESCRIPTOR format_desc = {0}; + BOOL spf = SetPixelFormat(dc, format_idx, &format_desc); + if (spf){ + + // create context + int attribs[] = { + WGL_CONTEXT_MAJOR_VERSION_ARB, 3, + WGL_CONTEXT_MINOR_VERSION_ARB, 3, + WGL_CONTEXT_FLAGS_ARB, WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB, + WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB, + 0 + }; + + graphics_context = w32_wglCreateContextAttribsARB(dc, 0, attribs); + } + } + + //- load & check gl functions + w32_wglMakeCurrent(dc, graphics_context); +#define X(N,R,P) GL_FULL_PROC_ADDR(N, w32_opengl_module, #N); + GL_FUNC_X_LIST() +#undef X + w32_wglMakeCurrent(0, 0); + + B32 missing_gl_func = 0; +#define X(N,R,P) if (N == 0){ missing_gl_func = 1; } + GL_FUNC_X_LIST() +#undef X + + if (missing_gl_func){ + error_message("failed to load gl functions"); + } + + // cleanup + ReleaseDC(dummy_window, dc); + DestroyWindow(dummy_window); + } + + if (graphics_context == 0){ + error_message("failed to create graphics context"); + } + + + //- create the window + graphics_window = + CreateWindowW(GRAPHICS_WINDOW_CLASS_NAME, + L"TITLE ME", + WS_TILEDWINDOW, + CW_USEDEFAULT, CW_USEDEFAULT, // x,y + CW_USEDEFAULT, CW_USEDEFAULT, // w,h + 0, 0, hInstance, 0 // parent, menu, inst, param + ); + if (graphics_window == 0){ + error_message("failed to create graphics window"); + } + + //- set pixel format + { + HDC dc = GetDC(graphics_window); + PIXELFORMATDESCRIPTOR format_desc = {0}; + SetPixelFormat(dc, format_idx, &format_desc); + ReleaseDC(graphics_window, dc); + } + + //- make the window full screen + { + DWORD style = GetWindowLongW(graphics_window, GWL_STYLE); + HMONITOR mon = MonitorFromWindow(graphics_window, MONITOR_DEFAULTTOPRIMARY); + if (mon != 0){ + MONITORINFO moninfo = {0}; + moninfo.cbSize = sizeof(moninfo); + if (GetMonitorInfoW(mon, &moninfo)){ + SetWindowLongW(graphics_window, GWL_STYLE, style & ~WS_TILEDWINDOW); + SetWindowPos(graphics_window, HWND_TOP, + moninfo.rcMonitor.left, moninfo.rcMonitor.top, + moninfo.rcMonitor.right - moninfo.rcMonitor.left, + moninfo.rcMonitor.bottom - moninfo.rcMonitor.top, + SWP_NOOWNERZORDER | SWP_FRAMECHANGED); + } + } + } + + //- show the window + ShowWindow(graphics_window, SW_SHOW); +} + +static void +wgl_helper_begin_render(void){ + graphics_dc = GetDC(graphics_window); + w32_wglMakeCurrent(graphics_dc, graphics_context); + + RECT rect = {0}; + if (GetClientRect(graphics_window, &rect)){ + graphics_w = (F32)(rect.right - rect.left); + graphics_h = (F32)(rect.bottom - rect.top); + } +} + +static void +wgl_helper_end_render(void){ + SwapBuffers(graphics_dc); + ReleaseDC(graphics_window, graphics_dc); +} + + +//////////////////////////////// +//- Error Message + +static void +error_message(char *msg){ + MessageBoxA(0, msg, "Error", MB_OK); + ExitProcess(1); +} + + +//$ graphical //