Skip to content

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

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Draft
wants to merge 1 commit into
base: main
Choose a base branch
from
Draft

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

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
13 changes: 9 additions & 4 deletions simple_shader/lib/main.dart
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -40,13 +40,18 @@ class MyHomePage extends StatelessWidget {
}

class ShaderPainter extends CustomPainter {
ShaderPainter({required this.shader});
ui.FragmentShader shader;
ShaderPainter({required this.shader})
: _width = shader.getUniformFloat('resolution', 0),
_height = shader.getUniformFloat('resolution', 1);

final ui.FragmentShader shader;
final ui.UniformFloatSlot _width;
final ui.UniformFloatSlot _height;

@override
void paint(Canvas canvas, Size size) {
shader.setFloat(0, size.width);
shader.setFloat(1, size.height);
_width.set(size.width);
_height.set(size.height);

final paint = Paint()..shader = shader;
canvas.drawRect(Rect.fromLTWH(0, 0, size.width, size.height), paint);
Expand Down
Loading