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shaders: don't use textureGrad() in powersurge_effect

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Apparently it has bad performance at least on some intel iGPUs (my
laptop), and it does nothing visually here.
This commit is contained in:
Andrei Alexeyev 2024-05-22 16:22:08 +02:00
parent 149a261389
commit d288f2bd27
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GPG key ID: 72D26128040B9690
1 changed files with 4 additions and 6 deletions
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10
resources/00-taisei.pkgdir/shader/powersurge_effect.frag.glsl
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@ -29,9 +29,7 @@ vec4 colormap(vec4 c) {
void main(void) {
vec2 uv = texCoord;
vec2 gradX = dFdx(uv);
vec2 gradY = dFdy(uv);
vec4 c = textureGrad(shotlayer, uv, gradX, gradY);
vec4 c = texture(shotlayer, uv);
#ifdef ENABLE_ALPHA_CULLING
if(all(lessThan(c, vec4(1.0 / 255.0)))) {
@ -49,9 +47,9 @@ void main(void) {
vec4 m = vec4(vec3(0), 1);
float t = (time + c.a * 0.2) * 0.1 + 92.123431 + fwidth(c.a);
m.rgb += textureGrad(flowlayer, uv + 0.0524 * vec2(3.123*sin(t*1.632), t*36.345), gradX, gradY).rgb;
m.rgb += textureGrad(flowlayer, uv + 0.0531 * vec2(t*13.624, -t*49.851), gradX, gradY).rgb;
m.rgb += textureGrad(flowlayer, uv + 0.0543 * vec2(-t*12.931, -t*24.341), gradX, gradY).rgb;
m.rgb += texture(flowlayer, uv + 0.0524 * vec2(3.123*sin(t*1.632), t*36.345)).rgb;
m.rgb += texture(flowlayer, uv + 0.0531 * vec2(t*13.624, -t*49.851)).rgb;
m.rgb += texture(flowlayer, uv + 0.0543 * vec2(-t*12.931, -t*24.341)).rgb;
m.rgb = hueShift(clamp(m.rgb / 2.5, 0, 1), time * 0.1 + uv.y);