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Use new consts to add mobile GPU speed-up

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Richard Davey 2023-02-27 13:47:55 +00:00
parent 7edc856154
commit 6d48142f94
2 changed files with 29 additions and 31 deletions
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28
src/renderer/webgl/shaders/FXGlow-frag.js
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@ -3,41 +3,39 @@ module.exports = [
'precision mediump float;',
'uniform sampler2D uMainSampler;',
'varying vec2 outTexCoord;',
'uniform float distance;',
'uniform float outerStrength;',
'uniform float innerStrength;',
'uniform vec2 resolution;',
'uniform vec4 glowColor;',
'uniform bool knockout;',
'const float PI = 3.14159265358979323846264;',
'const float MAX_DIST = 128.0;',
'const float SIZE = 0.15;',
'const float DIST = __DIST__;',
'const float SIZE = min(__SIZE__, PI * 2.0);',
'const float STEP = ceil(PI * 2.0 / SIZE);',
'const float MAX_ALPHA = STEP * DIST * (DIST + 1.0) / 2.0;',
'void main ()',
'{',
' vec2 px = vec2(1.0 / resolution.x, 1.0 / resolution.y);',
' float totalAlpha = 0.0;',
' vec2 direction;',
' vec2 displaced;',
' vec4 color;',
' for (float angle = 0.0; angle < PI * 2.0; angle += SIZE)',
' {',
' direction = vec2(cos(angle), sin(angle)) * px;',
' for (float curDistance = 0.0; curDistance < MAX_DIST; curDistance++)',
' for (float curDistance = 0.0; curDistance < DIST; curDistance++)',
' {',
' if (curDistance >= distance)',
' {',
' break;',
' }',
' displaced = outTexCoord + direction * (curDistance + 1.0);',
' totalAlpha += (distance - curDistance) * texture2D(uMainSampler, displaced).a;',
' color = texture2D(uMainSampler, displaced);',
' totalAlpha += (DIST - curDistance) * color.a;',
' }',
' }',
' vec4 curColor = texture2D(uMainSampler, outTexCoord);',
' float maxAlpha = 42.0 * distance * (distance + 1.0) / 2.0;',
' float alphaRatio = (totalAlpha / maxAlpha);',
' float innerGlowAlpha = (1.0 - alphaRatio) * innerStrength * curColor.a;',
' color = texture2D(uMainSampler, outTexCoord);',
' float alphaRatio = (totalAlpha / MAX_ALPHA);',
' float innerGlowAlpha = (1.0 - alphaRatio) * innerStrength * color.a;',
' float innerGlowStrength = min(1.0, innerGlowAlpha);',
' vec4 innerColor = mix(curColor, glowColor, innerGlowStrength);',
' float outerGlowAlpha = alphaRatio * outerStrength * (1.0 - curColor.a);',
' vec4 innerColor = mix(color, glowColor, innerGlowStrength);',
' float outerGlowAlpha = alphaRatio * outerStrength * (1.0 - color.a);',
' float outerGlowStrength = min(1.0 - innerColor.a, outerGlowAlpha);',
' vec4 outerGlowColor = outerGlowStrength * glowColor.rgba;',
' if (knockout)',

32
src/renderer/webgl/shaders/src/FXGlow.frag
View file

@ -6,16 +6,19 @@ uniform sampler2D uMainSampler;
varying vec2 outTexCoord;
uniform float distance;
uniform float outerStrength;
uniform float innerStrength;
uniform vec2 resolution;
uniform vec4 glowColor;
uniform bool knockout;
const float PI = 3.14159265358979323846264;
const float MAX_DIST = 128.0;
const float SIZE = 0.15;
const float DIST = __DIST__;
const float SIZE = min(__SIZE__, PI * 2.0);
const float STEP = ceil(PI * 2.0 / SIZE);
const float MAX_ALPHA = STEP * DIST * (DIST + 1.0) / 2.0;
void main ()
{
@ -25,35 +28,32 @@ void main ()
vec2 direction;
vec2 displaced;
vec4 color;
for (float angle = 0.0; angle < PI * 2.0; angle += SIZE)
{
direction = vec2(cos(angle), sin(angle)) * px;
for (float curDistance = 0.0; curDistance < MAX_DIST; curDistance++)
for (float curDistance = 0.0; curDistance < DIST; curDistance++)
{
if (curDistance >= distance)
{
break;
}
displaced = outTexCoord + direction * (curDistance + 1.0);
totalAlpha += (distance - curDistance) * texture2D(uMainSampler, displaced).a;
color = texture2D(uMainSampler, displaced);
totalAlpha += (DIST - curDistance) * color.a;
}
}
vec4 curColor = texture2D(uMainSampler, outTexCoord);
color = texture2D(uMainSampler, outTexCoord);
float maxAlpha = 42.0 * distance * (distance + 1.0) / 2.0;
float alphaRatio = (totalAlpha / maxAlpha);
float alphaRatio = (totalAlpha / MAX_ALPHA);
float innerGlowAlpha = (1.0 - alphaRatio) * innerStrength * curColor.a;
float innerGlowAlpha = (1.0 - alphaRatio) * innerStrength * color.a;
float innerGlowStrength = min(1.0, innerGlowAlpha);
vec4 innerColor = mix(curColor, glowColor, innerGlowStrength);
vec4 innerColor = mix(color, glowColor, innerGlowStrength);
float outerGlowAlpha = alphaRatio * outerStrength * (1.0 - curColor.a);
float outerGlowAlpha = alphaRatio * outerStrength * (1.0 - color.a);
float outerGlowStrength = min(1.0 - innerColor.a, outerGlowAlpha);
vec4 outerGlowColor = outerGlowStrength * glowColor.rgba;