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apply #23576

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This commit is contained in:
Junkui Zhang 2025-07-14 14:50:21 +08:00
parent 1fb689bad3
commit 9c3cfca835
1 changed files with 26 additions and 2 deletions
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28
crates/gpui/src/platform/windows/shaders.hlsl
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@ -40,12 +40,13 @@ struct LinearColorStop {
struct Background {
// 0u is Solid
// 1u is LinearGradient
// 2u is PatternSlash
uint tag;
// 0u is sRGB linear color
// 1u is Oklab color
uint color_space;
Hsla solid;
float angle;
float gradient_angle_or_pattern_height;
LinearColorStop colors[2];
uint pad;
};
@ -295,6 +296,12 @@ GradientColor prepare_gradient_color(uint tag, uint color_space, Hsla solid, Hsl
return output;
}
float2x2 rotate2d(float angle) {
float s = sin(angle);
float c = cos(angle);
return float2x2(c, -s, s, c);
}
float4 gradient_color(Background background,
float2 position,
Bounds bounds,
@ -307,7 +314,8 @@ float4 gradient_color(Background background,
break;
case 1: {
// -90 degrees to match the CSS gradient angle.
float radians = (fmod(background.angle, 360.0) - 90.0) * (M_PI_F / 180.0);
float gradient_angle = background.gradient_angle_or_pattern_height;
float radians = (fmod(gradient_angle, 360.0) - 90.0) * (M_PI_F / 180.0);
float2 direction = float2(cos(radians), sin(radians));
// Expand the short side to be the same as the long side
@ -347,6 +355,22 @@ float4 gradient_color(Background background,
}
break;
}
case 2: {
float gradient_angle_or_pattern_height = background.gradient_angle_or_pattern_height;
float pattern_width = (gradient_angle_or_pattern_height / 65535.0f) / 255.0f;
float pattern_interval = fmod(gradient_angle_or_pattern_height, 65535.0f) / 255.0f;
float pattern_height = pattern_width + pattern_interval;
float stripe_angle = M_PI_F / 4.0;
float pattern_period = pattern_height * sin(stripe_angle);
float2x2 rotation = rotate2d(stripe_angle);
float2 relative_position = position - bounds.origin;
float2 rotated_point = mul(rotation, relative_position);
float pattern = fmod(rotated_point.x, pattern_period);
float distance = min(pattern, pattern_period - pattern) - pattern_period * (pattern_width / pattern_height) / 2.0f;
color = solid_color;
color.a *= saturate(0.5 - distance);
break;
}
}
return color;