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gl_engine: corrected tint/tritone wrong alpha multiplication

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Hermet Park 2025-07-08 21:09:30 +09:00 • committed by Hermet Park
parent 78753eed31
commit 668c818240
1 changed files with 7 additions and 16 deletions
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23
src/renderer/gl_engine/tvgGlShaderSrc.cpp
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@ -865,10 +865,7 @@ void main()
{
vec4 orig = texture(uSrcTexture, vUV);
float luma = dot(orig.rgb, vec3(0.2126, 0.7152, 0.0722));
vec4 black = uParams.params[0];
vec4 white = uParams.params[1];
float intens = uParams.params[2].r;
FragColor = mix(orig, mix(black, white, luma), intens) * orig.a;
FragColor = vec4(mix(orig.rgb, mix(uParams.params[0].rgb, uParams.params[1].rgb, luma), uParams.params[2].r) * orig.a, orig.a);
}
)";
@ -885,19 +882,13 @@ void main()
{
vec4 orig = texture(uSrcTexture, vUV);
float luma = dot(orig.rgb, vec3(0.2126, 0.7152, 0.0722));
vec4 shadow = uParams.params[0];
vec4 midtone = uParams.params[1];
vec4 highlight = uParams.params[2];
bool isBright = luma >= 0.5f;
float t = isBright ? (luma - 0.5f) * 2.0f : luma * 2.0f;
vec3 from = isBright ? uParams.params[1].rgb : uParams.params[0].rgb;
vec3 to = isBright ? uParams.params[2].rgb : uParams.params[1].rgb;
vec4 tmp = vec4(mix(from, to, t), 1.0f);
vec4 tmp = vec4(
luma >= 0.5f ? mix(midtone.r, highlight.r, (luma - 0.5f)*2.0f) : mix(shadow.r, midtone.r, luma * 2.0f),
luma >= 0.5f ? mix(midtone.g, highlight.g, (luma - 0.5f)*2.0f) : mix(shadow.g, midtone.g, luma * 2.0f),
luma >= 0.5f ? mix(midtone.b, highlight.b, (luma - 0.5f)*2.0f) : mix(shadow.b, midtone.b, luma * 2.0f),
luma >= 0.5f ? mix(midtone.a, highlight.a, (luma - 0.5f)*2.0f) : mix(shadow.a, midtone.a, luma * 2.0f)
);
//blender
if (highlight.a > 0.0f) tmp = mix(tmp, orig, highlight.a);
if (uParams.params[2].a > 0.0f) tmp = mix(tmp, orig, uParams.params[2].a);
FragColor = tmp * orig.a;
}
)";