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shader cleanup

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This commit is contained in:
galister
2024-02-01 00:25:30 +01:00
parent 7ae7e8f176
commit af687d2f30
12 changed files with 0 additions and 306 deletions
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src/shaders/frag-color.spv
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src/shaders/frag-glyph.spv
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src/shaders/frag-sprite.spv
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src/shaders/frag-srgb.spv
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117
src/shaders/mod.rs
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@@ -106,120 +106,3 @@ pub mod frag_srgb {
", ",
} }
} }
pub mod frag_screen {
vulkano_shaders::shader! {
ty: "fragment",
src: r"#version 310 es
precision highp float;
layout (location = 0) in vec2 in_uv;
layout (location = 0) out vec4 out_color;
layout (set = 0, binding = 0) uniform sampler2D in_texture;
layout (set = 0, binding = 1) uniform ColorBlock {
uniform vec4 in_color;
};
vec4 supersample(sampler2D tex, vec2 uv) {
float ddx = dFdx(uv.x);
float ddy = dFdy(uv.y);
float width = sqrt(ddx*ddx + ddy*ddy);
ivec2 size = textureSize(tex, 0);
ivec2 pixelWidth = ivec2(width * vec2(size));
ivec2 xy = ivec2(uv * vec2(size));
ivec2 start = xy - pixelWidth/2;
ivec2 end = xy + pixelWidth/2;
vec4 outColor = vec4(0.0);
int n = 0;
for (int xSample = start.x; xSample <= end.x; xSample++) {
for (int ySample = start.y; ySample <= end.y; ySample++) {
n++;
outColor += texelFetch(tex, clamp(ivec2(xSample, ySample), ivec2(0), size), 0);
}
}
if (n > 0) {
return outColor / float(n);
} else {
return vec4(0.0);
}
}
float gaussian(float x, float t) {
float PI = 3.14159265358;
return exp(-x*x/(2.0 * t*t))/(sqrt(2.0*PI)*t);
}
float besselI0(float x) {
return 1.0 + pow(x, 2.0) * (0.25 + pow(x, 2.0) * (0.015625 + pow(x, 2.0) * (0.000434028 + pow(x, 2.0) * (6.78168e-6 + pow(x, 2.0) * (6.78168e-8 + pow(x, 2.0) * (4.7095e-10 + pow(x, 2.0) * (2.40281e-12 + pow(x, 2.0) * (9.38597e-15 + pow(x, 2.0) * (2.8969e-17 + 7.24226e-20 * pow(x, 2.0))))))))));
}
float kaiser(float x, float alpha) {
if (x > 1.0) {
return 0.0;
}
return besselI0(alpha * sqrt(1.0-x*x));
}
vec4 lowpassFilter(sampler2D tex, vec2 uv, float alpha) {
float PI = 3.14159265358;
vec4 q = vec4(0.0);
vec2 dx_uv = dFdx(uv);
vec2 dy_uv = dFdy(uv);
//float width = sqrt(max(dot(dx_uv, dx_uv), dot(dy_uv, dy_uv)));
vec2 width = abs(vec2(dx_uv.x, dy_uv.y));
ivec2 size = textureSize(tex, 0);
vec2 pixelWidth = floor(width * vec2(size));
vec2 aspectRatio = normalize(pixelWidth);
ivec2 xy = ivec2(uv * vec2(size));
vec2 xyf = uv * vec2(size);
pixelWidth = clamp(pixelWidth, vec2(1.0), vec2(2.0));
ivec2 start = xy - ivec2(pixelWidth);
ivec2 end = xy + ivec2(pixelWidth);
vec4 outColor = vec4(0.0);
float qSum = 0.0;
for (int v = start.y; v <= end.y; v++) {
for (int u = start.x; u <= end.x; u++) {
float kx = (xyf.x - float(u))/pixelWidth.x;
float ky = (xyf.y - float(v))/pixelWidth.y;
//float lanczosValue = gaussian(kx, fcx);
float lanczosValue = kaiser(sqrt(kx*kx + ky*ky), alpha);
q += texelFetch(tex, ivec2(u, v), 0) * lanczosValue;
qSum += lanczosValue;
}
}
return q/qSum;
}
void main()
{
out_color = lowpassFilter(in_texture, in_uv, 4.0);
out_color.a = 1.0;
}
",
}
}

15
src/shaders/src/color.frag
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@@ -1,15 +0,0 @@
#version 310 es
precision highp float;
layout (location = 0) in vec2 in_uv;
layout (location = 0) out vec4 out_color;
layout (set = 0, binding = 0) uniform ColorBlock {
uniform vec4 in_color;
};
void main()
{
out_color = in_color;
}

12
src/shaders/src/common.vert
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@@ -1,12 +0,0 @@
#version 310 es
precision highp float;
layout (location = 0) in vec2 in_pos;
layout (location = 1) in vec2 in_uv;
layout (location = 0) out vec2 out_uv;
void main() {
out_uv = in_uv;
gl_Position = vec4(in_pos * 2. - 1., 0., 1.);
}

18
src/shaders/src/glyph.frag
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@@ -1,18 +0,0 @@
#version 310 es
precision highp float;
layout (location = 0) in vec2 in_uv;
layout (location = 0) out vec4 out_color;
layout (set = 0, binding = 0) uniform sampler2D in_texture;
layout (set = 0, binding = 1) uniform ColorBlock {
uniform vec4 in_color;
};
void main()
{
float r = texture(in_texture, in_uv).r;
out_color = vec4(r,r,r,r) * in_color;
}

111
src/shaders/src/screen.frag
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@@ -1,111 +0,0 @@
#version 310 es
precision highp float;
layout (location = 0) in vec2 in_uv;
layout (location = 0) out vec4 out_color;
layout (set = 0, binding = 0) uniform sampler2D in_texture;
layout (set = 0, binding = 1) uniform ColorBlock {
uniform vec4 in_color;
};
vec4 supersample(sampler2D tex, vec2 uv) {
float ddx = dFdx(uv.x);
float ddy = dFdy(uv.y);
float width = sqrt(ddx*ddx + ddy*ddy);
ivec2 size = textureSize(tex, 0);
ivec2 pixelWidth = ivec2(width * vec2(size));
ivec2 xy = ivec2(uv * vec2(size));
ivec2 start = xy - pixelWidth/2;
ivec2 end = xy + pixelWidth/2;
vec4 outColor = vec4(0.0);
int n = 0;
for (int xSample = start.x; xSample <= end.x; xSample++) {
for (int ySample = start.y; ySample <= end.y; ySample++) {
n++;
outColor += texelFetch(tex, clamp(ivec2(xSample, ySample), ivec2(0), size), 0);
}
}
if (n > 0) {
return outColor / float(n);
} else {
return vec4(0.0);
}
}
float gaussian(float x, float t) {
float PI = 3.14159265358;
return exp(-x*x/(2.0 * t*t))/(sqrt(2.0*PI)*t);
}
float besselI0(float x) {
return 1.0 + pow(x, 2.0) * (0.25 + pow(x, 2.0) * (0.015625 + pow(x, 2.0) * (0.000434028 + pow(x, 2.0) * (6.78168e-6 + pow(x, 2.0) * (6.78168e-8 + pow(x, 2.0) * (4.7095e-10 + pow(x, 2.0) * (2.40281e-12 + pow(x, 2.0) * (9.38597e-15 + pow(x, 2.0) * (2.8969e-17 + 7.24226e-20 * pow(x, 2.0))))))))));
}
float kaiser(float x, float alpha) {
if (x > 1.0) {
return 0.0;
}
return besselI0(alpha * sqrt(1.0-x*x));
}
vec4 lowpassFilter(sampler2D tex, vec2 uv, float alpha) {
float PI = 3.14159265358;
vec4 q = vec4(0.0);
vec2 dx_uv = dFdx(uv);
vec2 dy_uv = dFdy(uv);
//float width = sqrt(max(dot(dx_uv, dx_uv), dot(dy_uv, dy_uv)));
vec2 width = abs(vec2(dx_uv.x, dy_uv.y));
ivec2 size = textureSize(tex, 0);
vec2 pixelWidth = floor(width * vec2(size));
vec2 aspectRatio = normalize(pixelWidth);
ivec2 xy = ivec2(uv * vec2(size));
vec2 xyf = uv * vec2(size);
pixelWidth = clamp(pixelWidth, vec2(1.0), vec2(2.0));
ivec2 start = xy - ivec2(pixelWidth);
ivec2 end = xy + ivec2(pixelWidth);
vec4 outColor = vec4(0.0);
float qSum = 0.0;
for (int v = start.y; v <= end.y; v++) {
for (int u = start.x; u <= end.x; u++) {
float kx = fcFactor * (xyf.x - float(u))/pixelWidth.x;
float ky = fcFactor * (xyf.y - float(v))/pixelWidth.y;
//float lanczosValue = gaussian(kx, fcx);
float lanczosValue = kaiser(sqrt(kx*kx + ky*ky), alpha);
q += texelFetch(tex, ivec2(u, v), 0) * lanczosValue;
qSum += lanczosValue;
}
}
return q/qSum;
}
void main()
{
out_color = lowpassFilter(in_texture, in_uv, 4.0);
out_color.a = 1.0;
}

14
src/shaders/src/sprite.frag
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@@ -1,14 +0,0 @@
#version 310 es
precision highp float;
layout (location = 0) in vec2 in_uv;
layout (location = 0) out vec4 out_color;
layout (set = 0, binding = 0) uniform sampler2D in_texture;
void main()
{
out_color = texture(in_texture, in_uv);
out_color.a = 1.;
}

19
src/shaders/src/srgb.frag
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@@ -1,19 +0,0 @@
#version 310 es
precision highp float;
layout (location = 0) in vec2 in_uv;
layout (location = 0) out vec4 out_color;
layout (set = 0, binding = 0) uniform sampler2D in_texture;
void main()
{
out_color = texture(in_texture, in_uv);
bvec4 cutoff = lessThan(out_color, vec4(0.04045));
vec4 higher = pow((out_color + vec4(0.055))/vec4(1.055), vec4(2.4));
vec4 lower = out_color/vec4(12.92);
out_color = mix(higher, lower, cutoff);
}

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src/shaders/vert-common.spv
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