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| author | Cristobal Sciutto <cristobal.sciutto@gmail.com> | 2023-10-27 22:18:31 +0000 |
|---|---|---|
| committer | Cristobal Sciutto <cristobal.sciutto@gmail.com> | 2023-10-27 22:18:31 +0000 |
| commit | 37ccfee6ea7e27607b4a08fd44048d6ae8a189e2 (patch) | |
| tree | 4efa28ad3450f76363de472e494606e921521048 /virtual-programs | |
| parent | scale as param (diff) | |
| download | folk-37ccfee6ea7e27607b4a08fd44048d6ae8a189e2.tar.gz folk-37ccfee6ea7e27607b4a08fd44048d6ae8a189e2.zip | |
scale sampling
Diffstat (limited to 'virtual-programs')
| -rw-r--r-- | virtual-programs/display/image.folk | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/virtual-programs/display/image.folk b/virtual-programs/display/image.folk index 55a283e0..7415b260 100644 --- a/virtual-programs/display/image.folk +++ b/virtual-programs/display/image.folk @@ -5,17 +5,17 @@ On process "display" { dict set ::pipelines "image" [Gpu::pipeline {sampler2D image vec2 imageSize vec2 pos float radians float scale fn rotate} { - vec2 a = scale * (pos + rotate(-imageSize/2, -radians)); - vec2 b = scale * (pos + rotate(vec2(imageSize.x, -imageSize.y)/2, -radians)); - vec2 c = scale * (pos + rotate(imageSize/2, -radians)); - vec2 d = scale * (pos + rotate(vec2(-imageSize.x, imageSize.y)/2, -radians)); + vec2 a = pos + scale * (rotate(-imageSize/2, -radians)); + vec2 b = pos + scale * (rotate(vec2(imageSize.x, -imageSize.y)/2, -radians)); + vec2 c = pos + scale * (rotate(imageSize/2, -radians)); + vec2 d = pos + scale * (rotate(vec2(-imageSize.x, imageSize.y)/2, -radians)); vec2 vertices[4] = vec2[4](a, b, d, c); return vertices[gl_VertexIndex]; } {fn invBilinear fn rotate} { - vec2 a = pos + rotate(-imageSize/2, -radians); - vec2 b = pos + rotate(vec2(imageSize.x, -imageSize.y)/2, -radians); - vec2 c = pos + rotate(imageSize/2, -radians); - vec2 d = pos + rotate(vec2(-imageSize.x, imageSize.y)/2, -radians); + vec2 a = pos + scale * (rotate(-imageSize/2, -radians)); + vec2 b = pos + scale * (rotate(vec2(imageSize.x, -imageSize.y)/2, -radians)); + vec2 c = pos + scale * (rotate(imageSize/2, -radians)); + vec2 d = pos + scale * (rotate(vec2(-imageSize.x, imageSize.y)/2, -radians)); vec2 p = gl_FragCoord.xy; vec2 uv = invBilinear(p, a, b, c, d); if( max( abs(uv.x-0.5), abs(uv.y-0.5))<0.5 ) { |