generated from soypat/go-module-template
-
Notifications
You must be signed in to change notification settings - Fork 1
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
7 changed files
with
108 additions
and
75 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,97 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "flag" | ||
| "fmt" | ||
| "image/color" | ||
| "log" | ||
| "runtime" | ||
| "time" | ||
|
|
||
| "github.com/chewxy/math32" | ||
| "github.com/soypat/glgl/math/ms1" | ||
| "github.com/soypat/gsdf" | ||
| "github.com/soypat/gsdf/forge/textsdf" | ||
| "github.com/soypat/gsdf/glbuild" | ||
| "github.com/soypat/gsdf/gleval" | ||
| "github.com/soypat/gsdf/gsdfaux" | ||
| ) | ||
|
|
||
| const filename = "text.png" | ||
|
|
||
| func init() { | ||
| runtime.LockOSThread() | ||
| } | ||
|
|
||
| func scene(bld *gsdf.Builder) (glbuild.Shader2D, error) { | ||
| var f textsdf.Font | ||
| f.Configure(textsdf.FontConfig{ | ||
| RelativeGlyphTolerance: 0.001, | ||
| }) | ||
| err := f.LoadTTFBytes(textsdf.ISO3098TTF()) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return f.TextLine("Abc123~") | ||
| } | ||
|
|
||
| func main() { | ||
| useGPU := false | ||
| flag.BoolVar(&useGPU, "gpu", useGPU, "Enable GPU usage") | ||
| flag.Parse() | ||
| if useGPU { | ||
| term, err := gleval.Init1x1GLFW() | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| defer term() | ||
| } | ||
| var bld gsdf.Builder | ||
| s, err := scene(&bld) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| var sdf2 gleval.SDF2 | ||
| if useGPU { | ||
| sdf2, err = gsdfaux.MakeGPUSDF2(s) | ||
| } else { | ||
| sdf2, err = gleval.NewCPUSDF2(s) | ||
| } | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| if !useGPU { | ||
| fmt.Println("GPU usage not enabled (-gpu flag). Enable for faster rendering") | ||
| } | ||
|
|
||
| charHeight := sdf2.Bounds().Size().Y | ||
| edgeAliasing := charHeight / 1000 | ||
| start := time.Now() | ||
| err = gsdfaux.RenderPNGFile(filename, sdf2, 300, blackAndWhite(edgeAliasing)) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| fmt.Println("PNG file rendered to", filename, "in", time.Since(start)) | ||
| } | ||
|
|
||
| func blackAndWhite(edgeSmooth float32) func(d float32) color.Color { | ||
| if edgeSmooth <= 0 { | ||
| return blackAndWhiteNoSmoothing | ||
| } | ||
| return func(d float32) color.Color { | ||
| // Smoothstep anti-aliasing near the edge | ||
| blend := 0.5 + 0.5*math32.Tanh(d/edgeSmooth) | ||
| // Clamp blend to [0, 1] for valid grayscale values | ||
| blend = ms1.Clamp(blend, 0, 1) | ||
| // Convert blend to grayscale | ||
| grayValue := uint8(blend * 255) | ||
| return color.Gray{Y: grayValue} | ||
| } | ||
| } | ||
|
|
||
| func blackAndWhiteNoSmoothing(d float32) color.Color { | ||
| if d < 0 { | ||
| return color.Black | ||
| } | ||
| return color.White | ||
| } |
This file was deleted.
Oops, something went wrong.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters