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Atmosphere/troposphere/daybreak/nanovg/shaders/fill_aa_fsh.glsl
Adubbz 94eb2195d3
Added Daybreak, a system updater homebrew (#1073)
* Implemented a system updater homebrew (titled Daybreak)

* git subrepo pull ./troposphere/daybreak/nanovg

subrepo:
  subdir:   "troposphere/daybreak/nanovg"
  merged:   "c197ba2f"
upstream:
  origin:   "https://github.com/Adubbz/nanovg-deko.git"
  branch:   "master"
  commit:   "c197ba2f"
git-subrepo:
  version:  "0.4.1"
  origin:   "???"
  commit:   "???" (+1 squashed commits)

Squashed commits:

[232dc943] git subrepo clone https://github.com/Adubbz/nanovg-deko.git troposphere/daybreak/nanovg

subrepo:
  subdir:   "troposphere/daybreak/nanovg"
  merged:   "52bb784b"
upstream:
  origin:   "https://github.com/Adubbz/nanovg-deko.git"
  branch:   "master"
  commit:   "52bb784b"
git-subrepo:
  version:  "0.4.1"
  origin:   "???"
  commit:   "???"

* daybreak: switch to using hiddbg for home blocking (+1 squashed commits)

Squashed commits:

[4bfc7b0d] daybreak: block the home button during installation
2020-07-07 17:07:00 -07:00

83 lines
No EOL
2.3 KiB
GLSL

#version 460
layout(binding = 0) uniform sampler2D tex;
layout(std140, binding = 0) uniform frag {
mat3 scissorMat;
mat3 paintMat;
vec4 innerCol;
vec4 outerCol;
vec2 scissorExt;
vec2 scissorScale;
vec2 extent;
float radius;
float feather;
float strokeMult;
float strokeThr;
int texType;
int type;
};
layout(location = 0) in vec2 ftcoord;
layout(location = 1) in vec2 fpos;
layout(location = 0) out vec4 outColor;
float sdroundrect(vec2 pt, vec2 ext, float rad) {
vec2 ext2 = ext - vec2(rad,rad);
vec2 d = abs(pt) - ext2;
return min(max(d.x,d.y),0.0) + length(max(d,0.0)) - rad;
}
// Scissoring
float scissorMask(vec2 p) {
vec2 sc = (abs((scissorMat * vec3(p,1.0)).xy) - scissorExt);
sc = vec2(0.5,0.5) - sc * scissorScale;
return clamp(sc.x,0.0,1.0) * clamp(sc.y,0.0,1.0);
}
// Stroke - from [0..1] to clipped pyramid, where the slope is 1px.
float strokeMask() {
return min(1.0, (1.0-abs(ftcoord.x*2.0-1.0))*strokeMult) * min(1.0, ftcoord.y);
}
void main(void) {
vec4 result;
float scissor = scissorMask(fpos);
float strokeAlpha = strokeMask();
if (strokeAlpha < strokeThr) discard;
if (type == 0) { // Gradient
// Calculate gradient color using box gradient
vec2 pt = (paintMat * vec3(fpos,1.0)).xy;
float d = clamp((sdroundrect(pt, extent, radius) + feather*0.5) / feather, 0.0, 1.0);
vec4 color = mix(innerCol,outerCol,d);
// Combine alpha
color *= strokeAlpha * scissor;
result = color;
} else if (type == 1) { // Image
// Calculate color fron texture
vec2 pt = (paintMat * vec3(fpos,1.0)).xy / extent;
vec4 color = texture(tex, pt);
if (texType == 1) color = vec4(color.xyz*color.w,color.w);
if (texType == 2) color = vec4(color.x);
// Apply color tint and alpha.
color *= innerCol;
// Combine alpha
color *= strokeAlpha * scissor;
result = color;
} else if (type == 2) { // Stencil fill
result = vec4(1,1,1,1);
} else if (type == 3) { // Textured tris
vec4 color = texture(tex, ftcoord);
if (texType == 1) color = vec4(color.xyz*color.w,color.w);
if (texType == 2) color = vec4(color.x);
color *= scissor;
result = color * innerCol;
}
outColor = result;
};