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Fix white gfx on linux / intel gpus. These optimisations originally came from toxieainc

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This commit is contained in:
Ian Curtis 2023-10-27 10:45:16 +01:00
parent c5f9a3ad26
commit f89da17f17
3 changed files with 18 additions and 15 deletions
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10
Src/Graphics/New3D/R3DShaderCommon.h
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@ -337,6 +337,16 @@ float CalcFog()
return fog;
}
float Sqr(float a)
{
return a*a;
}
float SqrLength(vec2 a)
{
return a.x*a.x + a.y*a.y;
}
void WriteOutputs(vec4 colour, int layer)
{
vec4 blank = vec4(0.0);

16
Src/Graphics/New3D/R3DShaderQuads.h
View file

@ -249,6 +249,8 @@ float CalcFog();
void Step15Luminous(inout vec4 colour);
vec4 GetTextureValue();
void WriteOutputs(vec4 colour, int layer);
float Sqr(float a);
float SqrLength(vec2 a);
void QuadraticInterpolation()
{
@ -354,16 +356,6 @@ void QuadraticInterpolation()
gl_FragDepth = depth * 0.5 + 0.5;
}
float sqr(float a)
{
return a*a;
}
float sqr_length(vec2 a)
{
return a.x*a.x + a.y*a.y;
}
void main()
{
vec4 tex1Data;
@ -389,7 +381,7 @@ void main()
}
float ellipse;
ellipse = sqr_length((gl_FragCoord.xy - spotEllipse.xy) / spotEllipse.zw); // decay rate = square of distance from center
ellipse = SqrLength((gl_FragCoord.xy - spotEllipse.xy) / spotEllipse.zw); // decay rate = square of distance from center
ellipse = 1.0 - ellipse; // invert
ellipse = max(0.0, ellipse); // clamp
@ -414,7 +406,7 @@ void main()
// inverse-linear falloff
// Reference: https://imdoingitwrong.wordpress.com/2011/01/31/light-attenuation/
// y = 1 / (d/r + 1)^2
range = 1.0 / sqr(d * inv_r - 1.0);
range = 1.0 / Sqr(d * inv_r - 1.0);
range *= enable;
}

7
Src/Graphics/New3D/R3DShaderTriangles.h
View file

@ -122,6 +122,8 @@ float CalcFog();
void Step15Luminous(inout vec4 colour);
vec4 GetTextureValue();
void WriteOutputs(vec4 colour, int layer);
float Sqr(float a);
float SqrLength(vec2 a);
void main()
{
@ -150,8 +152,7 @@ void main()
}
float ellipse;
ellipse = length((gl_FragCoord.xy - spotEllipse.xy) / spotEllipse.zw);
ellipse = pow(ellipse, 2.0); // decay rate = square of distance from center
ellipse = SqrLength((gl_FragCoord.xy - spotEllipse.xy) / spotEllipse.zw); // decay rate = square of distance from center
ellipse = 1.0 - ellipse; // invert
ellipse = max(0.0, ellipse); // clamp
@ -176,7 +177,7 @@ void main()
// inverse-linear falloff
// Reference: https://imdoingitwrong.wordpress.com/2011/01/31/light-attenuation/
// y = 1 / (d/r + 1)^2
range = 1.0 / pow(d * inv_r - 1.0, 2.0);
range = 1.0 / Sqr(d * inv_r - 1.0);
range *= enable;
}