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Added antialiasing to outer edges

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simplified, stupidly fast MSAA for rounded edges
This commit is contained in:
vaxerski 2022-06-02 22:58:54 +02:00
parent 7b568d7ad8
commit e11cb8b328
4 changed files with 401 additions and 52 deletions
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444
src/render/Shaders.hpp
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@ -26,6 +26,8 @@ uniform vec2 bottomRight;
uniform vec2 fullSize;
uniform float radius;
uniform int primitiveMultisample;
void main() {
if (radius == 0.0) {
gl_FragColor = v_color;
@ -38,15 +40,57 @@ void main() {
// we're close left
if (pixCoord[1] < topLeft[1]) {
// top
if (distance(topLeft, pixCoord) > radius) {
discard;
return;
float topLeftDistance = distance(topLeft, pixCoord);
if (topLeftDistance > radius - 1.0) {
if (primitiveMultisample == 0 && topLeftDistance > radius) {
discard;
return;
} else if (primitiveMultisample == 1) {
float distances = 0.0;
if (distance(topLeft, pixCoord + vec2(0.25, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(topLeft, pixCoord + vec2(0.75, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(topLeft, pixCoord + vec2(0.25, 0.75)) < radius) { distances = distances + 1.0; }
if (distance(topLeft, pixCoord + vec2(0.75, 0.75)) < radius) { distances = distances + 1.0; }
if (distances == 0.0) {
discard;
return;
}
distances = distances / 4.0;
gl_FragColor = v_color * distances;
return;
}
}
} else if (pixCoord[1] > bottomRight[1]) {
// bottom
if (distance(vec2(topLeft[0], bottomRight[1]), pixCoord) > radius) {
discard;
return;
float topLeftDistance = distance(vec2(topLeft[0], bottomRight[1]), pixCoord);
if (topLeftDistance > radius - 1.0) {
if (primitiveMultisample == 0 && topLeftDistance > radius) {
discard;
return;
} else if (primitiveMultisample == 1) {
float distances = 0.0;
if (distance(vec2(topLeft[0], bottomRight[1]), pixCoord + vec2(0.25, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(vec2(topLeft[0], bottomRight[1]), pixCoord + vec2(0.75, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(vec2(topLeft[0], bottomRight[1]), pixCoord + vec2(0.25, 0.75)) < radius) { distances = distances + 1.0; }
if (distance(vec2(topLeft[0], bottomRight[1]), pixCoord + vec2(0.75, 0.75)) < radius) { distances = distances + 1.0; }
if (distances == 0.0) {
discard;
return;
}
distances = distances / 4.0;
gl_FragColor = v_color * distances;
return;
}
}
}
}
@ -54,15 +98,57 @@ void main() {
// we're close right
if (pixCoord[1] < topLeft[1]) {
// top
if (distance(vec2(bottomRight[0], topLeft[1]), pixCoord) > radius) {
discard;
return;
float topLeftDistance = distance(vec2(bottomRight[0], topLeft[1]), pixCoord);
if (topLeftDistance > radius - 1.0) {
if (primitiveMultisample == 0 && topLeftDistance > radius) {
discard;
return;
} else if (primitiveMultisample == 1) {
float distances = 0.0;
if (distance(vec2(bottomRight[0], topLeft[1]), pixCoord + vec2(0.25, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(vec2(bottomRight[0], topLeft[1]), pixCoord + vec2(0.75, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(vec2(bottomRight[0], topLeft[1]), pixCoord + vec2(0.25, 0.75)) < radius) { distances = distances + 1.0; }
if (distance(vec2(bottomRight[0], topLeft[1]), pixCoord + vec2(0.75, 0.75)) < radius) { distances = distances + 1.0; }
if (distances == 0.0) {
discard;
return;
}
distances = distances / 4.0;
gl_FragColor = v_color * distances;
return;
}
}
} else if (pixCoord[1] > bottomRight[1]) {
// bottom
if (distance(bottomRight, pixCoord) > radius) {
discard;
return;
float topLeftDistance = distance(bottomRight, pixCoord);
if (topLeftDistance > radius - 1.0) {
if (primitiveMultisample == 0 && topLeftDistance > radius) {
discard;
return;
} else if (primitiveMultisample == 1) {
float distances = 0.0;
if (distance(bottomRight, pixCoord + vec2(0.25, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(bottomRight, pixCoord + vec2(0.75, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(bottomRight, pixCoord + vec2(0.25, 0.75)) < radius) { distances = distances + 1.0; }
if (distance(bottomRight, pixCoord + vec2(0.75, 0.75)) < radius) { distances = distances + 1.0; }
if (distances == 0.0) {
discard;
return;
}
distances = distances / 4.0;
gl_FragColor = v_color * distances;
return;
}
}
}
}
@ -94,6 +180,8 @@ uniform float radius;
uniform int discardOpaque;
uniform int primitiveMultisample;
void main() {
vec4 pixColor = texture2D(tex, v_texcoord);
@ -109,15 +197,57 @@ void main() {
// we're close left
if (pixCoord[1] < topLeft[1]) {
// top
if (distance(topLeft, pixCoord) > radius) {
discard;
return;
float topLeftDistance = distance(topLeft, pixCoord);
if (topLeftDistance > radius - 1.0) {
if (primitiveMultisample == 0 && topLeftDistance > radius) {
discard;
return;
} else if (primitiveMultisample == 1) {
float distances = 0.0;
if (distance(topLeft, pixCoord + vec2(0.25, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(topLeft, pixCoord + vec2(0.75, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(topLeft, pixCoord + vec2(0.25, 0.75)) < radius) { distances = distances + 1.0; }
if (distance(topLeft, pixCoord + vec2(0.75, 0.75)) < radius) { distances = distances + 1.0; }
if (distances == 0.0) {
discard;
return;
}
distances = distances / 4.0;
gl_FragColor = pixColor * distances;
return;
}
}
} else if (pixCoord[1] > bottomRight[1]) {
// bottom
if (distance(vec2(topLeft[0], bottomRight[1]), pixCoord) > radius) {
discard;
return;
float topLeftDistance = distance(vec2(topLeft[0], bottomRight[1]), pixCoord);
if (topLeftDistance > radius - 1.0) {
if (primitiveMultisample == 0 && topLeftDistance > radius) {
discard;
return;
} else if (primitiveMultisample == 1) {
float distances = 0.0;
if (distance(vec2(topLeft[0], bottomRight[1]), pixCoord + vec2(0.25, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(vec2(topLeft[0], bottomRight[1]), pixCoord + vec2(0.75, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(vec2(topLeft[0], bottomRight[1]), pixCoord + vec2(0.25, 0.75)) < radius) { distances = distances + 1.0; }
if (distance(vec2(topLeft[0], bottomRight[1]), pixCoord + vec2(0.75, 0.75)) < radius) { distances = distances + 1.0; }
if (distances == 0.0) {
discard;
return;
}
distances = distances / 4.0;
gl_FragColor = pixColor * distances;
return;
}
}
}
}
@ -125,15 +255,57 @@ void main() {
// we're close right
if (pixCoord[1] < topLeft[1]) {
// top
if (distance(vec2(bottomRight[0], topLeft[1]), pixCoord) > radius) {
discard;
return;
float topLeftDistance = distance(vec2(bottomRight[0], topLeft[1]), pixCoord);
if (topLeftDistance > radius - 1.0) {
if (primitiveMultisample == 0 && topLeftDistance > radius) {
discard;
return;
} else if (primitiveMultisample == 1) {
float distances = 0.0;
if (distance(vec2(bottomRight[0], topLeft[1]), pixCoord + vec2(0.25, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(vec2(bottomRight[0], topLeft[1]), pixCoord + vec2(0.75, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(vec2(bottomRight[0], topLeft[1]), pixCoord + vec2(0.25, 0.75)) < radius) { distances = distances + 1.0; }
if (distance(vec2(bottomRight[0], topLeft[1]), pixCoord + vec2(0.75, 0.75)) < radius) { distances = distances + 1.0; }
if (distances == 0.0) {
discard;
return;
}
distances = distances / 4.0;
gl_FragColor = pixColor * distances;
return;
}
}
} else if (pixCoord[1] > bottomRight[1]) {
// bottom
if (distance(bottomRight, pixCoord) > radius) {
discard;
return;
float topLeftDistance = distance(bottomRight, pixCoord);
if (topLeftDistance > radius - 1.0) {
if (primitiveMultisample == 0 && topLeftDistance > radius) {
discard;
return;
} else if (primitiveMultisample == 1) {
float distances = 0.0;
if (distance(bottomRight, pixCoord + vec2(0.25, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(bottomRight, pixCoord + vec2(0.75, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(bottomRight, pixCoord + vec2(0.25, 0.75)) < radius) { distances = distances + 1.0; }
if (distance(bottomRight, pixCoord + vec2(0.75, 0.75)) < radius) { distances = distances + 1.0; }
if (distances == 0.0) {
discard;
return;
}
distances = distances / 4.0;
gl_FragColor = pixColor * distances;
return;
}
}
}
}
@ -154,12 +326,16 @@ uniform float radius;
uniform int discardOpaque;
uniform int primitiveMultisample;
void main() {
if (discardOpaque == 1 && alpha == 1.0) {
discard;
return;
}
vec4 pixColor = vec4(texture2D(tex, v_texcoord).rgb, 1.0);
vec2 pixCoord = fullSize * v_texcoord;
@ -167,15 +343,57 @@ void main() {
// we're close left
if (pixCoord[1] < topLeft[1]) {
// top
if (distance(topLeft, pixCoord) > radius) {
discard;
return;
float topLeftDistance = distance(topLeft, pixCoord);
if (topLeftDistance > radius - 1.0) {
if (primitiveMultisample == 0 && topLeftDistance > radius) {
discard;
return;
} else if (primitiveMultisample == 1) {
float distances = 0.0;
if (distance(topLeft, pixCoord + vec2(0.25, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(topLeft, pixCoord + vec2(0.75, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(topLeft, pixCoord + vec2(0.25, 0.75)) < radius) { distances = distances + 1.0; }
if (distance(topLeft, pixCoord + vec2(0.75, 0.75)) < radius) { distances = distances + 1.0; }
if (distances == 0.0) {
discard;
return;
}
distances = distances / 4.0;
gl_FragColor = pixColor * distances;
return;
}
}
} else if (pixCoord[1] > bottomRight[1]) {
// bottom
if (distance(vec2(topLeft[0], bottomRight[1]), pixCoord) > radius) {
discard;
return;
float topLeftDistance = distance(vec2(topLeft[0], bottomRight[1]), pixCoord);
if (topLeftDistance > radius - 1.0) {
if (primitiveMultisample == 0 && topLeftDistance > radius) {
discard;
return;
} else if (primitiveMultisample == 1) {
float distances = 0.0;
if (distance(vec2(topLeft[0], bottomRight[1]), pixCoord + vec2(0.25, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(vec2(topLeft[0], bottomRight[1]), pixCoord + vec2(0.75, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(vec2(topLeft[0], bottomRight[1]), pixCoord + vec2(0.25, 0.75)) < radius) { distances = distances + 1.0; }
if (distance(vec2(topLeft[0], bottomRight[1]), pixCoord + vec2(0.75, 0.75)) < radius) { distances = distances + 1.0; }
if (distances == 0.0) {
discard;
return;
}
distances = distances / 4.0;
gl_FragColor = pixColor * distances;
return;
}
}
}
}
@ -183,20 +401,62 @@ void main() {
// we're close right
if (pixCoord[1] < topLeft[1]) {
// top
if (distance(vec2(bottomRight[0], topLeft[1]), pixCoord) > radius) {
discard;
return;
float topLeftDistance = distance(vec2(bottomRight[0], topLeft[1]), pixCoord);
if (topLeftDistance > radius - 1.0) {
if (primitiveMultisample == 0 && topLeftDistance > radius) {
discard;
return;
} else if (primitiveMultisample == 1) {
float distances = 0.0;
if (distance(vec2(bottomRight[0], topLeft[1]), pixCoord + vec2(0.25, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(vec2(bottomRight[0], topLeft[1]), pixCoord + vec2(0.75, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(vec2(bottomRight[0], topLeft[1]), pixCoord + vec2(0.25, 0.75)) < radius) { distances = distances + 1.0; }
if (distance(vec2(bottomRight[0], topLeft[1]), pixCoord + vec2(0.75, 0.75)) < radius) { distances = distances + 1.0; }
if (distances == 0.0) {
discard;
return;
}
distances = distances / 4.0;
gl_FragColor = pixColor * distances;
return;
}
}
} else if (pixCoord[1] > bottomRight[1]) {
// bottom
if (distance(bottomRight, pixCoord) > radius) {
discard;
return;
float topLeftDistance = distance(bottomRight, pixCoord);
if (topLeftDistance > radius - 1.0) {
if (primitiveMultisample == 0 && topLeftDistance > radius) {
discard;
return;
} else if (primitiveMultisample == 1) {
float distances = 0.0;
if (distance(bottomRight, pixCoord + vec2(0.25, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(bottomRight, pixCoord + vec2(0.75, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(bottomRight, pixCoord + vec2(0.25, 0.75)) < radius) { distances = distances + 1.0; }
if (distance(bottomRight, pixCoord + vec2(0.75, 0.75)) < radius) { distances = distances + 1.0; }
if (distances == 0.0) {
discard;
return;
}
distances = distances / 4.0;
gl_FragColor = pixColor * distances;
return;
}
}
}
}
gl_FragColor = vec4(texture2D(tex, v_texcoord).rgb, 1.0) * alpha;
gl_FragColor = pixColor * alpha;
})#";
inline const std::string FRAGBLUR1 = R"#(
@ -261,6 +521,8 @@ uniform float radius;
uniform int discardOpaque;
uniform int primitiveMultisample;
void main() {
vec4 pixColor = texture2D(texture0, v_texcoord);
@ -276,15 +538,57 @@ void main() {
// we're close left
if (pixCoord[1] < topLeft[1]) {
// top
if (distance(topLeft, pixCoord) > radius) {
discard;
return;
float topLeftDistance = distance(topLeft, pixCoord);
if (topLeftDistance > radius - 1.0) {
if (primitiveMultisample == 0 && topLeftDistance > radius) {
discard;
return;
} else if (primitiveMultisample == 1) {
float distances = 0.0;
if (distance(topLeft, pixCoord + vec2(0.25, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(topLeft, pixCoord + vec2(0.75, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(topLeft, pixCoord + vec2(0.25, 0.75)) < radius) { distances = distances + 1.0; }
if (distance(topLeft, pixCoord + vec2(0.75, 0.75)) < radius) { distances = distances + 1.0; }
if (distances == 0.0) {
discard;
return;
}
distances = distances / 4.0;
gl_FragColor = pixColor * distances;
return;
}
}
} else if (pixCoord[1] > bottomRight[1]) {
// bottom
if (distance(vec2(topLeft[0], bottomRight[1]), pixCoord) > radius) {
discard;
return;
float topLeftDistance = distance(vec2(topLeft[0], bottomRight[1]), pixCoord);
if (topLeftDistance > radius - 1.0) {
if (primitiveMultisample == 0 && topLeftDistance > radius) {
discard;
return;
} else if (primitiveMultisample == 1) {
float distances = 0.0;
if (distance(vec2(topLeft[0], bottomRight[1]), pixCoord + vec2(0.25, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(vec2(topLeft[0], bottomRight[1]), pixCoord + vec2(0.75, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(vec2(topLeft[0], bottomRight[1]), pixCoord + vec2(0.25, 0.75)) < radius) { distances = distances + 1.0; }
if (distance(vec2(topLeft[0], bottomRight[1]), pixCoord + vec2(0.75, 0.75)) < radius) { distances = distances + 1.0; }
if (distances == 0.0) {
discard;
return;
}
distances = distances / 4.0;
gl_FragColor = pixColor * distances;
return;
}
}
}
}
@ -292,15 +596,57 @@ void main() {
// we're close right
if (pixCoord[1] < topLeft[1]) {
// top
if (distance(vec2(bottomRight[0], topLeft[1]), pixCoord) > radius) {
discard;
return;
float topLeftDistance = distance(vec2(bottomRight[0], topLeft[1]), pixCoord);
if (topLeftDistance > radius - 1.0) {
if (primitiveMultisample == 0 && topLeftDistance > radius) {
discard;
return;
} else if (primitiveMultisample == 1) {
float distances = 0.0;
if (distance(vec2(bottomRight[0], topLeft[1]), pixCoord + vec2(0.25, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(vec2(bottomRight[0], topLeft[1]), pixCoord + vec2(0.75, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(vec2(bottomRight[0], topLeft[1]), pixCoord + vec2(0.25, 0.75)) < radius) { distances = distances + 1.0; }
if (distance(vec2(bottomRight[0], topLeft[1]), pixCoord + vec2(0.75, 0.75)) < radius) { distances = distances + 1.0; }
if (distances == 0.0) {
discard;
return;
}
distances = distances / 4.0;
gl_FragColor = pixColor * distances;
return;
}
}
} else if (pixCoord[1] > bottomRight[1]) {
// bottom
if (distance(bottomRight, pixCoord) > radius) {
discard;
return;
float topLeftDistance = distance(bottomRight, pixCoord);
if (topLeftDistance > radius - 1.0) {
if (primitiveMultisample == 0 && topLeftDistance > radius) {
discard;
return;
} else if (primitiveMultisample == 1) {
float distances = 0.0;
if (distance(bottomRight, pixCoord + vec2(0.25, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(bottomRight, pixCoord + vec2(0.75, 0.25)) < radius) { distances = distances + 1.0; }
if (distance(bottomRight, pixCoord + vec2(0.25, 0.75)) < radius) { distances = distances + 1.0; }
if (distance(bottomRight, pixCoord + vec2(0.75, 0.75)) < radius) { distances = distances + 1.0; }
if (distances == 0.0) {
discard;
return;
}
distances = distances / 4.0;
gl_FragColor = pixColor * distances;
return;
}
}
}
}