not needed

- renamed to kageviewer to match with repository name
- automatically determine shader size when needed
- added Time uniform
- don't provide binary releases anymore

.gitignore

@@ -1 +1,2 @@
 releases
+kageviewer

.goreleaser.yaml

@@ -0,0 +1,65 @@
+# vim: set ts=2 sw=2 tw=0 fo=cnqoj
+
+version: 2
+
+before:
+  hooks:
+    - go mod tidy
+
+gitea_urls:
+  api: https://codeberg.org/api/v1
+  download: https://codeberg.org
+  
+builds:
+  - env:
+      - CGO_ENABLED=0
+    goos:
+      - linux
+      - freebsd
+
+archives:
+  - formats: [tar.gz]
+    # this name template makes the OS and Arch compatible with the results of `uname`.
+    name_template: >-
+      {{ .ProjectName }}_
+      {{- title .Os }}_
+      {{- if eq .Arch "amd64" }}x86_64
+      {{- else if eq .Arch "386" }}i386
+      {{- else }}{{ .Arch }}{{ end }}
+      {{- if .Arm }}v{{ .Arm }}{{ end }}_{{ .Tag }}
+    # use zip for windows archives
+    format_overrides:
+      - goos: windows
+        formats: [zip]
+      - goos: linux
+        formats: [tar.gz,binary]
+    files:
+      - src: "*.md"
+        strip_parent: true
+      - src: Makefile.dist
+        dst: Makefile
+    wrap_in_directory: true
+
+changelog:
+  sort: asc
+  filters:
+    exclude:
+      - "^docs:"
+      - "^test:"
+  groups:
+    - title: Improved
+      regexp: '^.*?(feat|add|new)(\([[:word:]]+\))??!?:.+$'
+      order: 0
+    - title: Fixed
+      regexp: '^.*?(bug|fix)(\([[:word:]]+\))??!?:.+$'
+      order: 1
+    - title: Changed
+      order: 999
+
+release:
+  header: "# Release Notes"
+  footer: >-
+
+    ---
+
+    Full Changelog: [{{ .PreviousTag }}...{{ .Tag }}](https://codeberg.org/scip/kageviewer/compare/{{ .PreviousTag }}...{{ .Tag }})

.woodpecker/build.yaml

@@ -0,0 +1,31 @@
+matrix:
+  platform:
+    - linux/amd64
+  goversion:
+    - 1.24
+
+labels:
+  platform: ${platform}
+    
+steps:
+  build:
+    when:
+      event: [push]
+    image: golang:${goversion}
+    commands:
+      - apt-get update
+      - apt-get install -y libasound2-dev libgl1-mesa-dev libxcursor-dev libxi-dev libxinerama-dev libxrandr-dev libxxf86vm-dev
+      - go get
+      - go build
+
+  linter:
+    when:
+      event: [push]
+    image: golang:${goversion}
+    commands:
+      - apt-get update
+      - apt-get install -y libasound2-dev libgl1-mesa-dev libxcursor-dev libxi-dev libxinerama-dev libxrandr-dev libxxf86vm-dev
+      - curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/HEAD/install.sh | sh -s -- -b $(go env GOPATH)/bin v2.5.0
+      - golangci-lint --version
+      - golangci-lint run ./...
+    depends_on: [build]

Makefile

@@ -16,7 +16,7 @@
 
 #
 # no need to modify anything below
-tool      = kage-viewer
+tool      = kageviewer
 VERSION   = $(shell grep VERSION config.go | head -1 | cut -d '"' -f2)
 archs     = darwin freebsd linux windows
 PREFIX    = /usr/local
@@ -40,6 +40,12 @@ install: buildlocal
 clean:
 	rm -rf $(tool) coverage.out testdata t/out
 
+shader-destruct: buildlocal
+	./$(tool) -g 32x32 -i example/wall.png -i example/damage.png --map-ticks Time -s example/destruct.kage
+
+shader-ebiten: buildlocal
+	./$(tool) -g 640x480 --map-mouse Cursor -s example/ebiten.kage
+
 test: clean
 	mkdir -p t/out
 	go test ./... $(ARGS)
@@ -66,15 +72,12 @@ cover-report:
 goupdate:
 	go get -t -u=patch ./...
 
-buildall:
+release:
-	./mkrel.sh $(tool) $(VERSION)
+	gh release create v$(VERSION) --generate-notes
-
-release: buildall
-	gh release create v$(VERSION) --generate-notes releases/*
 
 show-versions: buildlocal
-	@echo "### kage-viewer version:"
+	@echo "### kageviewer version:"
-	@./kage-viewer -V
+	@./kageviewer -V
 
 	@echo
 	@echo "### go module versions:"

Makefile.dist

@@ -0,0 +1,18 @@
+# -*-make-*-
+
+.PHONY: install all
+
+tool   = rpn
+PREFIX = /usr/local
+UID    = root
+GID    = 0
+
+all:
+	@echo "Type 'sudo make install' to install the tool."
+	@echo "To change prefix, type 'sudo make install PREFIX=/opt'"
+
+install:
+	install -d -o $(UID) -g $(GID) $(PREFIX)/bin
+	install -d -o $(UID) -g $(GID) $(PREFIX)/share/doc
+	install -o $(UID) -g $(GID) -m 555 $(tool)  $(PREFIX)/sbin/
+	install -o $(UID) -g $(GID) -m 444 *.md $(PREFIX)/share/doc/

README.md

@@ -1,41 +1,32 @@
-# kage-viewer - Viewer for shaders written in Kage, similar to glslviewer
+# kageviewer - Viewer for shaders written in Kage, similar to glslviewer
 
-[![License](https://img.shields.io/badge/license-GPL-blue.svg)](https://github.com/tlinden/kage-viewer/blob/master/LICENSE)
+![Logo](https://codeberg.org/scip/kageviewer/raw/branch/main/.github/assets/logo.png)
-[![Go Report Card](https://goreportcard.com/badge/github.com/tlinden/kage-viewer)](https://goreportcard.com/report/github.com/tlinden/kage-viewer) 
 
-This little tool can be used to test shaders written in [Kage](https://ebitengine.org/en/documents/shader.html), a shader meta language for [Ebitengine](https://github.com/hajimehoshi/ebiten).
+[![License](https://img.shields.io/badge/license-GPL-blue.svg)](https://codeberg.org/scip/kageviewer/raw/branch/main/LICENSE)
+[![Go Report Card](https://goreportcard.com/badge/codeberg.org/scip/kageviewer)](https://goreportcard.com/report/codeberg.org/scip/kageviewer) 
+[![status-badge](https://ci.codeberg.org/api/badges/15617/status.svg)](https://ci.codeberg.org/repos/15617)
+
+This   little  tool   can  be   used  to   test  shaders   written  in
+[Kage](https://ebitengine.org/en/documents/shader.html), a shader meta
+language for
+[Ebitengine](https://github.com/hajimehoshi/ebiten). kageviewer
+reloads changed assets, which allows you to develop your shader and
+see live, how it responds to your changes. If loading fails, an error
+will be printed to STDOUT. The same applies for images.
+
+## Screenshot
+
+![Screenshot](https://codeberg.org/scip/kageviewer/raw/branch/main/.github/assets/screenshot.png)
 
 ## Installation
 
-The tool does not have any dependencies.  Just download the binary for
+Since `kageviewer` is primarily aimed at golang game developers, no
-your platform from the releases page and you're good to go.
+pre built binaries are provided.
 
-### Installation using a pre-compiled binary
+### Installation with go
-
-Go to the [latest release page](https://github.com/TLINDEN/kage-viewer/releases/latest)
-and look for your OS and platform. There are two options to install the binary:
-
-Directly     download     the     binary    for     your     platform,
-e.g. `kage-viewer-linux-amd64-0.0.2`, rename it to `kage-viewer` (or whatever
-you like more!)  and put it into  your bin dir (e.g. `$HOME/bin` or as
-root to `/usr/local/bin`).
-
-Be sure  to verify  the signature  of the binary  file. For  this also
-download the matching `kage-viewer-linux-amd64-0.0.2.sha256` file and:
 
 ```shell
-cat kage-viewer-linux-amd64-0.0.2.sha25 && sha256sum kage-viewer-linux-amd64-0.0.2
+go install codeberg.org/scip/kageviewer@latest
-```
-You should see the same SHA256 hash.
-
-You  may  also download  a  binary  tarball  for your  platform,  e.g.
-`kage-viewer-linux-amd64-0.0.2.tar.gz`,  unpack and  install it.  GNU Make  is
-required for this:
-   
-```shell
-tar xvfz kage-viewer-linux-amd64-0.0.2.tar.gz
-cd kage-viewer-linux-amd64-0.0.2
-sudo make install
 ```
 
 ### Installation from source
@@ -44,8 +35,8 @@ You will need the Golang toolchain  in order to build from source. GNU
 Make will also help but is not strictly neccessary.
 
 If you want to compile the tool yourself, use `git clone` to clone the
-repository.   Then   execute   `go    mod   tidy`   to   install   all
+repository.   Then   execute   `go mod tidy`   to   install   all
-dependencies. Then  just enter `go  build` or -  if you have  GNU Make
+dependencies. Then  just enter `go build` or -  if you have  GNU Make
 installed - `make`.
 
 To install after building either copy the binary or execute `sudo make
@@ -54,26 +45,33 @@ install`.
 # Usage
 
 ```shell
-kage-viewer -h
+kageviewer -h
-This is kage-viewer, a shader viewer.
+This is kageviewer, a shader viewer.
 
-Usage: kage-viewer [-vd] [-c <config file>] [-g geom] [-p geom] \
+Usage: kageviewer [-vd] [-c <config file>] [-g geom] [-p geom] \
        -i <image0.png> -i <image1.png> -s <shader.kage>
 
 Options:
--c --config   <toml file>     Config file to use (optional)
+-c --config     <toml file>     Config file to use (optional)
--i --image    <png file>      Image to load (multiple times allowed, up to 4)
+-i --image      <png file>      Image to load (multiple times allowed, up to 4)
--s --shader   <kage file>     Shader to run
+-s --shader     <kage file>     Shader to run
--g --geometry <WIDTHxHEIGHT>  Window size
+-g --geometry   <WIDTHxHEIGHT>  Window size
--p --position <XxY>           Position of image0
+-p --position   <XxY>           Position of image0
--d --debug    Show debugging output
+-b --background <png file>      Image to load as background
--v --version  Show program version
+-t --tps        <ticks/s>       At how many ticks per second to run
+   --map-flag   <name>          Map Flag uniform to <name>
+   --map-ticks  <name>          Map Ticks uniform to <name>
+   --map-time   <name>          Map Time uniform to <name>
+   --map-slider <name>          Map Slider uniform to <name>
+   --map-mouse  <name>          Map Mouse uniform to <name>
+-d --debug                      Show debugging output
+-v --version                    Show program version
 ```
 
 Example usage using the provided example:
 
 ```shell
-kage-viewer -g 32x32 -i example/wall.png -i example/damage.png  -s example/destruct.kg
+kageviewer -g 32x32 -i example/wall.png -i example/damage.png  -s example/destruct.kg
 ```
 
 Hit `SPACE` or press the left mouse button to toggle the damage
@@ -90,18 +88,29 @@ Uniforms supported so far:
   `SPACE` or pusing the left mouse button
 - `var Slider float`: a normalized float value, you can increment it
   with `UP` or `DOWN`
-- `var Ticks int`: the time the game runs (ticks, not seconds!)
+- `var Time float`: the time the game runs (ticks / TPS)
+- `var Ticks float`: the number of updates happened so far
 - `var Mouse vec2`: the current mouse position
 
+If you want to test an existing shader and don't want to rename the
+uniforms, you can map the ones provided by **kageviewer** to custom
+names using the `--map-*` options. For example:
+
+```shell
+kageviewer -g 640x480 --map-ticks Time --map-mouse Cursor examples/shader/default.go
+```
+
+This executes the example shader in the ebitenging source repository.
+
 # Config File
 
 You can use a config file to store your own codes, once you found one
 you like. A configfile is searched in these locations in this order:
 
-* `/etc/kage-viewer.conf`
+* `/etc/kageviewer.conf`
-* `/usr/local/etc/kage-viewer.conf`
+* `/usr/local/etc/kageviewer.conf`
-* `$HOME/.config/kage-viewer/config`
+* `$HOME/.config/kageviewer/config`
-* `$HOME/.kage-viewer`
+* `$HOME/.kageviewer`
 
 You may also specify a config file on the commandline using the `-c`
 flag.
@@ -115,12 +124,12 @@ Possible parameters equal the long command line options.
 - [X] Implement loading of images and shader files
 - [X] Implement basic shader rendering and user input
 - [ ] Add custom uniforms (maybe using lua code?)
-- [ ] Provide a way to respond live to shader code changes (use lua as
+- [x] Provide a way to respond live to shader code changes (use lua as
   well?)
 
 # Report bugs
 
-[Please open an issue](https://github.com/TLINDEN/kage-viewer/issues). Thanks!
+[Please open an issue](https://codeberg.org/scip/kageviewer/issues). Thanks!
 
 # License
 

config.go

@@ -18,6 +18,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
 package main
 
 import (
+	"errors"
 	"fmt"
 	"os"
 	"path/filepath"
@@ -32,31 +33,44 @@ import (
 )
 
 const (
-	VERSION string = "0.0.1"
+	VERSION string = "0.0.6"
-	Usage   string = `This is kage-viewer, a shader viewer.
+	Usage   string = `This is kageviewer, a shader viewer.
 
-Usage: kage-viewer [-vd] [-c <config file>] [-g geom] [-p geom] \
+Usage: kageviewer [-vd] [-c <config file>] [-g geom] [-p geom] \
        -i <image0.png> -i <image1.png> -s <shader.kage>
 
 Options:
--c --config   <toml file>     Config file to use (optional)
+-c --config     <toml file>     Config file to use (optional)
--i --image    <png file>      Image to load (multiple times allowed, up to 4)
+-i --image      <png file>      Image to load (multiple times allowed, up to 4)
--s --shader   <kage file>     Shader to run
+-s --shader     <kage file>     Shader to run
--g --geometry <WIDTHxHEIGHT>  Window size
+-g --geometry   <WIDTHxHEIGHT>  Window size
--p --position <XxY>           Position of image0
+-p --position   <XxY>           Position of image0
--d --debug    Show debugging output
+-b --background <png file>      Image to load as background
--v --version  Show program version
+-t --tps        <ticks/s>       At how many ticks per second to run
-`
+   --map-flag   <name>          Map Flag uniform to <name>
+   --map-ticks  <name>          Map Ticks uniform to <name>
+   --map-time   <name>          Map Time uniform to <name>
+   --map-slider <name>          Map Slider uniform to <name>
+   --map-mouse  <name>          Map Mouse uniform to <name>
+-d --debug                      Show debugging output
+-v --version                    Show program version`
 )
 
 type Config struct {
-	Showversion bool     `koanf:"version"`  // -v
+	Showversion bool     `koanf:"version"`    // -v
-	Debug       bool     `koanf:"debug"`    // -d
+	Debug       bool     `koanf:"debug"`      // -d
-	Config      string   `koanf:"config"`   // -c
+	Config      string   `koanf:"config"`     // -c
-	Image       []string `koanf:"image"`    // -i
+	Image       []string `koanf:"image"`      // -i
-	Shader      string   `koanf:"shader"`   // -s
+	Shader      string   `koanf:"shader"`     // -s
-	Geo         string   `koanf:"geometry"` // -g
+	Background  string   `koanf:"background"` // -b
-	Posision    string   `koanf:"position"` // -p
+	TPS         int      `koanf:"tps"`        // -t
+	Geo         string   `koanf:"geometry"`   // -g
+	Posision    string   `koanf:"position"`   // -p
+	Flag        string   `koanf:"map-flag"`
+	Ticks       string   `koanf:"map-ticks"`
+	Mouse       string   `koanf:"map-mouse"`
+	Slider      string   `koanf:"map-slider"`
+	Time        string   `koanf:"map-time"`
 
 	X, Y, Width, Height int // feed from -g + -p
 }
@@ -64,18 +78,10 @@ type Config struct {
 func InitConfig() (*Config, error) {
 	var kloader = koanf.New(".")
 
-	// Load default values using the confmap provider.
-	/* not needed yet
-	   if err := kloader.Load(confmap.Provider(map[string]interface{}{
-	   }, "."), nil); err != nil {
-	           return nil, fmt.Errorf("failed to load default values into koanf: %w", err)
-	   }
-	*/
-
 	// setup custom usage
 	flagset := flag.NewFlagSet("config", flag.ContinueOnError)
 	flagset.Usage = func() {
-		fmt.Println(Usage)
+		_, _ = fmt.Println(Usage)
 		os.Exit(0)
 	}
 
@@ -87,6 +93,13 @@ func InitConfig() (*Config, error) {
 	flagset.StringP("position", "p", "0x0", "position of shader")
 	flagset.StringArrayP("image", "i", nil, "image file")
 	flagset.StringP("shader", "s", "", "shader file")
+	flagset.StringP("map-flag", "", "Flag", "map flag uniform")
+	flagset.StringP("map-ticks", "", "Ticks", "map ticks uniform")
+	flagset.StringP("map-time", "", "Time", "map time uniform")
+	flagset.StringP("map-mouse", "", "Mouse", "map mouse uniform")
+	flagset.StringP("map-slider", "", "Slider", "map slider uniform")
+	flagset.StringP("background", "b", "", "background image")
+	flagset.IntP("tps", "t", 60, "ticks per second")
 
 	if err := flagset.Parse(os.Args[1:]); err != nil {
 		return nil, fmt.Errorf("failed to parse program arguments: %w", err)
@@ -103,10 +116,10 @@ func InitConfig() (*Config, error) {
 		configfiles = []string{configfile}
 	} else {
 		configfiles = []string{
-			"/etc/kage-viewer.conf", "/usr/local/etc/kage-viewer.conf", // unix variants
+			"/etc/kageviewer.conf", "/usr/local/etc/kageviewer.conf", // unix variants
-			filepath.Join(home, ".config", "kage-viewer", "config"),
+			filepath.Join(home, ".config", "kageviewer", "config"),
-			filepath.Join(home, ".kage-viewer"),
+			filepath.Join(home, ".kageviewer"),
-			"kage-viewer.conf",
+			"kageviewer.conf",
 		}
 	}
 
@@ -140,8 +153,8 @@ func InitConfig() (*Config, error) {
 }
 
 func SanitiyCheck(conf *Config) error {
-	if len(conf.Image) < 1 {
+	if len(conf.Image) > 4 {
-		return fmt.Errorf("at least 1 image must be specified")
+		return fmt.Errorf("only 4 images can be specified")
 	}
 
 	if conf.Shader == "" {
@@ -152,13 +165,13 @@ func SanitiyCheck(conf *Config) error {
 
 	geo := strings.Split(conf.Geo, "x")
 	if len(geo) != 2 {
-		return fmt.Errorf(geoerr)
+		return errors.New(geoerr)
 	}
 
 	w, errw := strconv.Atoi(geo[0])
 	h, errh := strconv.Atoi(geo[1])
 	if errw != nil || errh != nil {
-		return fmt.Errorf(geoerr)
+		return errors.New(geoerr)
 	}
 
 	conf.Width = w
@@ -168,13 +181,13 @@ func SanitiyCheck(conf *Config) error {
 
 	pos := strings.Split(conf.Posision, "x")
 	if len(geo) != 2 {
-		return fmt.Errorf(poserr)
+		return errors.New(poserr)
 	}
 
 	x, errx := strconv.Atoi(pos[0])
 	y, erry := strconv.Atoi(pos[1])
 	if errx != nil || erry != nil {
-		return fmt.Errorf(poserr)
+		return errors.New(poserr)
 	}
 
 	conf.X = x
@@ -182,11 +195,3 @@ func SanitiyCheck(conf *Config) error {
 
 	return nil
 }
-
-func fileExists(filename string) bool {
-	info, err := os.Stat(filename)
-	if os.IsNotExist(err) {
-		return false
-	}
-	return !info.IsDir()
-}

example/destruct.kage

@@ -20,7 +20,7 @@ package main
 
 var Flag int
 var Slider float
-var Time int
+var Time float
 var Mouse vec2
 
 func Fragment(_ vec4, texCoord vec2, _ vec4) vec4 {

example/ebiten.kage

@@ -0,0 +1,33 @@
+// Copyright 2020 The Ebiten Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//go:build ignore
+
+//kage:unit pixels
+
+package main
+
+var Time float
+var Cursor vec2
+
+func Fragment(dstPos vec4, srcPos vec2, color vec4) vec4 {
+	pos := (dstPos.xy - imageDstOrigin()) / imageDstSize()
+	pos += Cursor / imageDstSize() / 4
+	clr := 0.0
+	clr += sin(pos.x*cos(Time/15)*80) + cos(pos.y*cos(Time/15)*10)
+	clr += sin(pos.y*sin(Time/10)*40) + cos(pos.x*sin(Time/25)*40)
+	clr += sin(pos.x*sin(Time/5)*10) + sin(pos.y*sin(Time/35)*80)
+	clr *= sin(Time/10) * 0.5
+	return vec4(clr, clr*0.5, sin(clr+Time/3)*0.75, 1)
+}

game.go

@@ -24,17 +24,21 @@ import (
 	"log/slog"
 	"os"
 
+	"github.com/Zyko0/Ebiary/asset"
 	"github.com/hajimehoshi/ebiten/v2"
 	"github.com/hajimehoshi/ebiten/v2/inpututil"
 )
 
 type Game struct {
-	Conf   *Config
+	Conf         *Config
-	Images []*ebiten.Image
+	Images       []*asset.LiveAsset[*ebiten.Image]
-	Shader *ebiten.Shader
+	Shader       *asset.LiveAsset[*ebiten.Shader]
-	Ticks  int
+	ShaderBounds image.Rectangle
-	Slider float64
+	Cursor       []float64
-	Flag   int
+	Ticks        float64
+	Slider       float64
+	Flag         int
+	Background   *asset.LiveAsset[*ebiten.Image]
 }
 
 func LoadImage(name string) (*ebiten.Image, error) {
@@ -42,7 +46,9 @@ func LoadImage(name string) (*ebiten.Image, error) {
 	if err != nil {
 		return nil, err
 	}
-	defer fd.Close()
+	defer func() {
+		_ = fd.Close()
+	}()
 
 	img, _, err := image.Decode(fd)
 	if err != nil {
@@ -53,28 +59,62 @@ func LoadImage(name string) (*ebiten.Image, error) {
 }
 
 func (game *Game) Init() error {
+	// preload images
 	for _, image := range game.Conf.Image {
 		slog.Debug("Loading images", "image", image)
-		img, err := LoadImage(image)
+		//img, err := LoadImage(image)
+		img, err := asset.NewLiveAsset[*ebiten.Image](image)
 		if err != nil {
-			return err
+			return fmt.Errorf("failed to load image %s: %s", image, err)
 		}
 
 		game.Images = append(game.Images, img)
 	}
 
-	data, err := os.ReadFile(game.Conf.Shader)
+	// preload shader
+	shader, err := asset.NewLiveAsset[*ebiten.Shader](game.Conf.Shader)
 	if err != nil {
 		return fmt.Errorf("failed to load shader %s: %s", game.Conf.Shader, err)
 	}
 
-	shader, err := ebiten.NewShader(data)
+	if game.Conf.Background != "" {
-	if err != nil {
+		slog.Debug("Loading background", "image", game.Conf.Background)
-		return fmt.Errorf("failed to create new shader %s: %s", game.Conf.Shader, err)
+
+		img, err := asset.NewLiveAsset[*ebiten.Image](game.Conf.Background)
+		if err != nil {
+			return fmt.Errorf("failed to load image %s: %s", game.Conf.Background, err)
+		}
+
+		game.Background = img
 	}
 
 	game.Shader = shader
 
+	// user can customize TPS
+	ebiten.SetTPS(game.Conf.TPS)
+
+	// setup shader bounds, by default we use window size
+	game.ShaderBounds = image.Rect(0, 0, game.Conf.Width, game.Conf.Height)
+
+	if len(game.Images) > 0 {
+		if game.Conf.Width < game.Images[0].Value().Bounds().Max.X {
+			// setup  geom. Shader might  be smaller  than window, we  use the
+			// first image -  if any - to determine its  size. We also enlarge
+			// the window if the first image is larger than the window.
+			game.Conf.Width = game.Images[0].Value().Bounds().Max.X
+			game.Conf.Height = game.Images[0].Value().Bounds().Max.Y
+		}
+
+		// adjust shader size by first image as well
+		game.ShaderBounds = game.Images[0].Value().Bounds()
+	} else {
+		// there might be no shader image but a background image, check it
+		if game.Background != nil {
+			game.Conf.Width = game.Background.Value().Bounds().Max.X
+			game.Conf.Height = game.Background.Value().Bounds().Max.Y
+		}
+	}
+
 	return nil
 }
 
@@ -120,34 +160,66 @@ func (g *Game) Down() {
 }
 
 func (game *Game) Update() error {
-	if game.CheckInput() {
+	for _, image := range game.Images {
-		slog.Debug("Key pressed", "Slider", game.Slider, "Flag", game.Flag)
+		if image.Error() != nil {
+			fmt.Println("warn: image reloading error:", image.Error())
+		}
 	}
 
+	if game.Shader.Error() != nil {
+		fmt.Println("warn: shader reloading error:", game.Shader.Error())
+	}
+
+	if game.Background != nil {
+		if game.Background.Error() != nil {
+			fmt.Println("warn: background image reloading error:", game.Background.Error())
+		}
+	}
+
+	if game.CheckInput() {
+		slog.Debug("Key pressed",
+			game.Conf.Flag, game.Flag,
+			game.Conf.Slider, game.Slider,
+			game.Conf.Ticks, fmt.Sprintf("%.02f", float64(game.Ticks)/60),
+			game.Conf.Mouse, fmt.Sprintf("%.02f, %.02f", game.Cursor[0], game.Cursor[1]),
+		)
+	}
+
+	mousex, mousey := ebiten.CursorPosition()
+	game.Cursor = []float64{float64(mousex), float64(mousey)}
+
 	game.Ticks++
 
 	return nil
 }
 
 func (game *Game) Draw(screen *ebiten.Image) {
+	if game.Background != nil {
+		op := &ebiten.DrawImageOptions{}
+		screen.DrawImage(game.Background.Value(), op)
+	}
+
 	op := &ebiten.DrawRectShaderOptions{}
 
-	mousex, mousey := ebiten.CursorPosition()
-
 	op.Uniforms = map[string]any{
-		"Flag":   game.Flag,
+		game.Conf.Flag:   game.Flag,
-		"Slider": game.Slider,
+		game.Conf.Slider: game.Slider,
-		"Ticks":  game.Ticks,
+		game.Conf.Time:   game.Ticks / float64(ebiten.TPS()),
-		"Mouse":  []float64{float64(mousex), float64(mousey)},
+		game.Conf.Mouse:  game.Cursor,
+		game.Conf.Ticks:  game.Ticks,
 	}
 
 	for idx, image := range game.Images {
-		op.Images[idx] = image
+		op.Images[idx] = image.Value()
 	}
 
 	op.GeoM.Translate(float64(game.Conf.X), float64(game.Conf.Y))
 
-	screen.DrawRectShader(game.Conf.Width, game.Conf.Height, game.Shader, op)
+	screen.DrawRectShader(
+		game.ShaderBounds.Dx(),
+		game.ShaderBounds.Dy(),
+		game.Shader.Value(),
+		op)
 }
 
 func (game *Game) Layout(outsideWidth, outsideHeight int) (int, int) {

go.mod

@@ -1,11 +1,12 @@
-module github.com/TLINDEN/kage-viewer
+module codeberg.org/scip/kageviewer
 
 go 1.22
 
 require (
+	github.com/Zyko0/Ebiary/asset v0.0.0-20240304185439-be56fe8a2a6a // indirect
 	github.com/ebitengine/purego v0.6.0 // indirect
 	github.com/fatih/color v1.16.0 // indirect
-	github.com/fsnotify/fsnotify v1.6.0 // indirect
+	github.com/fsnotify/fsnotify v1.7.0 // indirect
 	github.com/go-viper/mapstructure/v2 v2.0.0-alpha.1 // indirect
 	github.com/hajimehoshi/ebiten/v2 v2.6.7 // indirect
 	github.com/jezek/xgb v1.1.0 // indirect

go.sum

@@ -1,9 +1,13 @@
+github.com/Zyko0/Ebiary/asset v0.0.0-20240304185439-be56fe8a2a6a h1:kn4fhGvVA6T1lK7qWujIj3m7e9imCZe4MHBuBeflKgU=
+github.com/Zyko0/Ebiary/asset v0.0.0-20240304185439-be56fe8a2a6a/go.mod h1:4CqqwHRUbvGBpBd5ye4MxDA4k/XtZqrAD1sg9uxmcYI=
 github.com/ebitengine/purego v0.6.0 h1:Yo9uBc1x+ETQbfEaf6wcBsjrQfCEnh/gaGUg7lguEJY=
 github.com/ebitengine/purego v0.6.0/go.mod h1:ah1In8AOtksoNK6yk5z1HTJeUkC1Ez4Wk2idgGslMwQ=
 github.com/fatih/color v1.16.0 h1:zmkK9Ngbjj+K0yRhTVONQh1p/HknKYSlNT+vZCzyokM=
 github.com/fatih/color v1.16.0/go.mod h1:fL2Sau1YI5c0pdGEVCbKQbLXB6edEj1ZgiY4NijnWvE=
 github.com/fsnotify/fsnotify v1.6.0 h1:n+5WquG0fcWoWp6xPWfHdbskMCQaFnG6PfBrh1Ky4HY=
 github.com/fsnotify/fsnotify v1.6.0/go.mod h1:sl3t1tCWJFWoRz9R8WJCbQihKKwmorjAbSClcnxKAGw=
+github.com/fsnotify/fsnotify v1.7.0 h1:8JEhPFa5W2WU7YfeZzPNqzMP6Lwt7L2715Ggo0nosvA=
+github.com/fsnotify/fsnotify v1.7.0/go.mod h1:40Bi/Hjc2AVfZrqy+aj+yEI+/bRxZnMJyTJwOpGvigM=
 github.com/go-viper/mapstructure/v2 v2.0.0-alpha.1 h1:TQcrn6Wq+sKGkpyPvppOz99zsMBaUOKXq6HSv655U1c=
 github.com/go-viper/mapstructure/v2 v2.0.0-alpha.1/go.mod h1:oJDH3BJKyqBA2TXFhDsKDGDTlndYOZ6rGS0BRZIxGhM=
 github.com/hajimehoshi/ebiten/v2 v2.6.7 h1:rxlMxu487wZN/JteykmuGdO1qotOolL8vJDU85lPh7A=

main.go

@@ -21,7 +21,6 @@ import (
 	"fmt"
 	"log"
 	"os"
-	"runtime/debug"
 
 	"log/slog"
 
@@ -37,7 +36,7 @@ func main() {
 	}
 
 	if conf.Showversion {
-		fmt.Printf("This is kage-viewer version %s\n", VERSION)
+		fmt.Printf("This is kageviewer version %s\n", VERSION)
 		return
 	}
 
@@ -46,7 +45,6 @@ func main() {
 	if conf.Debug {
 		logLevel := &slog.LevelVar{}
 		// we're using a more verbose logger in debug mode
-		buildInfo, _ := debug.ReadBuildInfo()
 		opts := &yadu.Options{
 			Level:     logLevel,
 			AddSource: true,
@@ -55,12 +53,7 @@ func main() {
 		logLevel.Set(slog.LevelDebug)
 
 		handler := yadu.NewHandler(os.Stdout, opts)
-		debuglogger := slog.New(handler).With(
+		debuglogger := slog.New(handler)
-			slog.Group("program_info",
-				slog.Int("pid", os.Getpid()),
-				slog.String("go_version", buildInfo.GoVersion),
-			),
-		)
 		slog.SetDefault(debuglogger)
 	}
 
@@ -71,7 +64,7 @@ func main() {
 
 	ebiten.SetWindowSize(game.Conf.Width, game.Conf.Height)
 	ebiten.SetWindowTitle("Kage shader viewer")
-	ebiten.SetWindowResizable(true)
+	ebiten.SetWindowResizingMode(ebiten.WindowResizingModeEnabled)
 
 	if err := ebiten.RunGame(game); err != nil {
 		log.Fatal(err)

mkrel.sh

@@ -1,80 +0,0 @@
-#!/bin/bash
-
-# Copyright © 2024 Thomas von Dein
-
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-
-
-# get list with: go tool dist list
-DIST="darwin/amd64
-freebsd/amd64
-linux/amd64
-netbsd/amd64
-openbsd/amd64
-windows/amd64
-freebsd/arm64
-linux/arm64
-netbsd/arm64
-openbsd/arm64
-windows/arm64"
-
-DIST="linux/amd64
-windows/amd64
-windows/arm64"
-
-tool="$1"
-version="$2"
-
-if test -z "$version"; then
-  echo "Usage: $0 <tool name> <release version>"
-  exit 1
-fi
-
-rm -rf releases
-mkdir -p releases
-
-
-for D in $DIST; do
-    os=${D/\/*/}
-    arch=${D/*\//}
-    binfile="releases/${tool}-${os}-${arch}-${version}"
-
-    if test "$os" = "windows"; then
-        binfile="${binfile}.exe"
-    fi
-    
-    tardir="${tool}-${os}-${arch}-${version}"
-    tarfile="releases/${tool}-${os}-${arch}-${version}.tar.gz"
-    set -x
-    #GOOS=${os} GOARCH=${arch} go build -tags osusergo,netgo -ldflags "-extldflags=-static" -o ${binfile}
-    GOOS=${os} GOARCH=${arch} go build -o ${binfile}
-    mkdir -p ${tardir}
-    cp ${binfile} README.md LICENSE ${tardir}/
-    echo 'tool = kage-viewer
-PREFIX = /usr/local
-UID    = root
-GID    = 0
-
-install:
-	install -d -o $(UID) -g $(GID) $(PREFIX)/bin
-	install -d -o $(UID) -g $(GID) $(PREFIX)/man/man1
-	install -o $(UID) -g $(GID) -m 555 $(tool)  $(PREFIX)/sbin/
-	install -o $(UID) -g $(GID) -m 444 $(tool).1 $(PREFIX)/man/man1/' > ${tardir}/Makefile
-    tar cpzf ${tarfile} ${tardir}
-    sha256sum ${binfile} | cut -d' ' -f1 > ${binfile}.sha256
-    sha256sum ${tarfile} | cut -d' ' -f1 > ${tarfile}.sha256
-    rm -rf ${tardir}
-    set +x
-done
-

releases/kage-viewer-linux-amd64-0.0.1.sha256

@@ -1 +0,0 @@
-f73335dc3e4e65b089624e9580b02d38926597c59127ca507be03148ab229b4f

releases/kage-viewer-linux-amd64-0.0.1.tar.gz.sha256

@@ -1 +0,0 @@
-d7726c68b43c550c27a42f7586a418915d042ed9a444f651cb5159e37bdea4ab

releases/kage-viewer-linux-arm64-0.0.1.tar.gz.sha256

@@ -1 +0,0 @@
-91b57cfbaa1ec63b797fbb4c4b3892c2e462ec7668207a3c645917af9c7ac3d1

releases/kage-viewer-windows-amd64-0.0.1.exe.sha256

@@ -1 +0,0 @@
-197bfab6dda912f8ed8f8d1b7afb1946d1c7640ab84ccb4a48c8d5d7c62fe8ea

releases/kage-viewer-windows-amd64-0.0.1.tar.gz.sha256

@@ -1 +0,0 @@
-c69df9ea174b69fb17e5f1e359106bce6105f6185e09531912e04398a4b72eff

releases/kage-viewer-windows-arm64-0.0.1.exe.sha256

@@ -1 +0,0 @@
-5c61f307b7b576f10d4a5ae276dbb8070053efd060bbfda93f8535658478b2cf

releases/kage-viewer-windows-arm64-0.0.1.tar.gz.sha256

@@ -1 +0,0 @@
-df707023f0bd50fe1ff55e466f212c5668d6c488644b25d5880e64ca21c4f073