wehub-resource-sync
97 lines
2.5 KiB
HLSL
97 lines
2.5 KiB
HLSL
cbuffer ParamConstants : register(b0)
|
|
{
|
|
float4 Fill;
|
|
float4 OutlineColor;
|
|
float4 Background;
|
|
|
|
float2 Stretch;
|
|
float2 Center;
|
|
|
|
float Scale;
|
|
float Round;
|
|
float Stroke;
|
|
float Feather;
|
|
float GradientBias;
|
|
float Rotate;
|
|
|
|
float IsTextureValid;
|
|
}
|
|
|
|
cbuffer Resolution : register(b1)
|
|
{
|
|
float TargetWidth;
|
|
float TargetHeight;
|
|
}
|
|
|
|
struct vsOutput
|
|
{
|
|
float4 position : SV_POSITION;
|
|
float2 texCoord : TEXCOORD;
|
|
};
|
|
|
|
Texture2D<float4> ImageA : register(t0);
|
|
sampler texSampler : register(s0);
|
|
|
|
float sdBox(in float2 p, in float2 b)
|
|
{
|
|
float2 d = abs(p) - b;
|
|
return length(
|
|
max(d, float2(0, 0))) +
|
|
min(max(d.x, d.y),
|
|
0.0);
|
|
}
|
|
|
|
float4 psMain(vsOutput psInput) : SV_TARGET
|
|
{
|
|
float aspectRatio = TargetWidth / TargetHeight;
|
|
|
|
float2 p = psInput.texCoord;
|
|
p -= 0.5;
|
|
p.x *= aspectRatio;
|
|
|
|
// Rotate
|
|
float imageRotationRad = (-Rotate - 90) / 180 * 3.141578;
|
|
|
|
float sina = sin(-imageRotationRad - 3.141578 / 2);
|
|
float cosa = cos(-imageRotationRad - 3.141578 / 2);
|
|
|
|
p -= Center * float2(1, -1);
|
|
p = float2(
|
|
cosa * p.x - sina * p.y,
|
|
cosa * p.y + sina * p.x);
|
|
|
|
float2 size = Stretch * Scale;
|
|
float minSize = min(size.x, size.y);
|
|
float roundOffset = minSize * Round;
|
|
float2 rsize = size - roundOffset;
|
|
|
|
float d = sdBox(p, rsize / 2);
|
|
d = GradientBias >= 0
|
|
? pow(d, GradientBias + 1)
|
|
: 1 - pow(clamp(1 - d, 0, 10), -GradientBias + 1);
|
|
|
|
float feather = Scale * Feather / 2;
|
|
float dInside = smoothstep(-feather, feather, d - roundOffset / 2);
|
|
|
|
float stroke = max(Stroke * minSize, 0);
|
|
float dStroke = smoothstep(-feather, feather, d - roundOffset / 2 - stroke);
|
|
|
|
// Prevent spill into background if stroke size is 0
|
|
float showStroke = saturate(abs(stroke) * 100);
|
|
float4 outlineColor = lerp(Fill, OutlineColor, showStroke);
|
|
|
|
float4 cInside = lerp(Fill, outlineColor, dInside);
|
|
|
|
float4 cStroke = lerp(Background, outlineColor, 1 - dStroke);
|
|
float4 c = lerp(cInside, cStroke, dStroke);
|
|
|
|
float4 orgColor = ImageA.Sample(texSampler, psInput.texCoord);
|
|
return (IsTextureValid < 0.5) ? c
|
|
: float4((1.0 - c.a) * orgColor.rgb + c.a * c.rgb,
|
|
orgColor.a + c.a - orgColor.a * c.a);
|
|
|
|
// float a = clamp(orgColor.a + c.a - orgColor.a * c.a, 0, 1);
|
|
|
|
// float3 rgb = (1.0 - c.a) * orgColor.rgb + c.a * c.rgb;
|
|
// return float4(rgb, a);
|
|
} |