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Code Issues Releases Wiki Activity

Updated fragment shader sample to use uniform-by-name accessor (#2736)

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Do not land until the following are on stable:
- https://github.com/flutter/flutter/pull/176728
- https://github.com/flutter/flutter/pull/176980

If you need help, consider asking for advice on the #hackers-devrel channel on [Discord].
This commit is contained in:
gaaclarke
2026-05-18 11:15:05 -07:00
committed by GitHub
parent 7f2fc7028d
commit 8fbf213817
1 changed files with 6 additions and 4 deletions
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10
simple_shader/lib/main.dart
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@@ -44,13 +44,15 @@ class MyHomePage extends StatelessWidget {
} }
class ShaderPainter extends CustomPainter { class ShaderPainter extends CustomPainter {
ShaderPainter({required this.shader}); ShaderPainter({required this.shader})
ui.FragmentShader shader; : _resolution = shader.getUniformVec2('resolution');
final ui.FragmentShader shader;
final ui.UniformVec2Slot _resolution;
@override @override
void paint(Canvas canvas, Size size) { void paint(Canvas canvas, Size size) {
shader.setFloat(0, size.width); _resolution.set(size.width, size.height);
shader.setFloat(1, size.height);
final paint = Paint()..shader = shader; final paint = Paint()..shader = shader;
canvas.drawRect(Rect.fromLTWH(0, 0, size.width, size.height), paint); canvas.drawRect(Rect.fromLTWH(0, 0, size.width, size.height), paint);