Some shader touchups (textureLod where needed, -0.5 LOD bias on TexFilterHack).

language.version

@@ -1,3 +1,3 @@
 [default]
-SWWM_MODVER="\cyDEMOLITIONIST \cw1.3pre r1185 \cu(jue 20 feb 2025 16:01:59 CET)\c-";
-SWWM_SHORTVER="\cw1.3pre r1185 \cu(2025-02-20 16:01:59)\c-";
+SWWM_MODVER="\cyDEMOLITIONIST \cw1.3pre r1186 \cu(lun 24 feb 2025 13:57:06 CET)\c-";
+SWWM_SHORTVER="\cw1.3pre r1186 \cu(2025-02-24 13:57:06)\c-";

shaders/glsl/NewLogoAnimated.fp

@@ -41,7 +41,7 @@ vec3 GradientMap( in vec3 color )
 {
 	float gray = dot(color,vec3(.333333));
 	vec2 pos = vec2(gray/2.+.25,0.);
-	return texture(gradtex,pos,0.).rgb;
+	return textureLod(gradtex,pos,0.).rgb;
 }
 
 void SetupMaterial( inout Material mat )
@@ -51,27 +51,27 @@ void SetupMaterial( inout Material mat )
 	// base blank layer
 	vec4 base = vec4(1.);
 	// first layer, warp then multiply red
-	base.rgb *= texture(Layer1,warpcoord(uv)).x;
+	base.rgb *= texture(Layer1,warpcoord(uv),-.5).x;
 	// first layer, multiply green
-	base.rgb *= texture(Layer1,uv).y;
+	base.rgb *= texture(Layer1,uv,-.5).y;
 	// first layer, add blue
-	base.rgb += texture(Layer1,uv).zzz;
+	base.rgb += texture(Layer1,uv,-.5).zzz;
 	// multiply by red fade
-	base.rgb *= texture(fadetex,vec2(.5)).x;
+	base.rgb *= textureLod(fadetex,vec2(.5),0.).x;
 	// gradient map result
 	base.rgb = GradientMap(base.rgb);
 	// color to alpha
 	base = blacktoalpha(base);
 	// second layer, alpha blend
-	vec4 tmp = texture(Layer2,uv);
+	vec4 tmp = texture(Layer2,uv,-.5);
 	vec4 tmp2;
 	tmp2.a = tmp.a+base.a*(1.-tmp.a);
 	tmp2.rgb = (tmp.rgb*tmp.a+base.rgb*base.a*(1.-tmp.a))/tmp2.a;
 	base = tmp2;
 	// third layer, hard light with two multiplied masks
-	tmp.xy = texture(Layer3,uv).xy;
-	tmp.z = texture(fadetex,vec2(.5)).y;
-	tmp.y *= texture(Layer3,clamp(uv+vec2(1.-tmp.z*2.,0.),vec2(0.),vec2(1.))).z;
+	tmp.xy = texture(Layer3,uv,-.5).xy;
+	tmp.z = textureLod(fadetex,vec2(.5),0.).y;
+	tmp.y *= texture(Layer3,clamp(uv+vec2(1.-tmp.z*2.,0.),vec2(0.),vec2(1.)),-.5).z;
 	tmp2.r = hardlight(base.r,tmp.x);
 	tmp2.g = hardlight(base.g,tmp.x);
 	tmp2.b = hardlight(base.b,tmp.x);

shaders/glsl/PlasmaBlast.fp

@@ -31,7 +31,7 @@ void SetupMaterial( inout Material mat )
 	mat.Normal = ApplyNormalMap(vTexCoord.st);
 	mat.Bright = texture(brighttexture,vTexCoord.st);
 	// status canvas tex (only need two channels)
-	vec2 fade = texture(fadetex,vec2(.5)).rg;
+	vec2 fade = textureLod(fadetex,vec2(.5),0.).rg;
 	// red: battery connection led
 	vec3 bat = texture(battex,vTexCoord.st).rgb*fade.r;
 	mat.Base.rgb += bat;
@@ -39,7 +39,7 @@ void SetupMaterial( inout Material mat )
 	// green: charge glow
 	float chg = texture(chgtex,vTexCoord.st).x*fade.g;
 	// TODO noise
-	vec3 grad = texture(gradtex,vec2(.25+chg*.5,.5)).rgb;
+	vec3 grad = textureLod(gradtex,vec2(.25+chg*.5,.5),0.).rgb;
 	mat.Base.rgb += grad;
 	mat.Bright.rgb += vec3(chg);
 }

shaders/glsl/TexFilterHack.fp

@@ -1,5 +1,6 @@
 // VKDoom's quirked up when it comes to texture filtering in custom materials
 // so this shader is needed as a compromise
+// (the negative LOD bias is needed for sharpness when used in 2D drawing)
 
 void SetupMaterial( inout Material mat )
 {
@@ -14,9 +15,9 @@ void SetupMaterial( inout Material mat )
 	float threshold = 0.;	// this controls sharpness, kinda
 	coeff = (coeff-threshold)*1./(1.-2.*threshold);
 	coeff = clamp(coeff,0.,1.);
-	mat.Base = textureLod(retex,pos+pxsize*(coeff-fcoord),0.);
+	mat.Base = texture(retex,pos+pxsize*(coeff-fcoord),-.5);
 #else
-	mat.Base = textureLod(retex,vTexCoord.st,0.);
+	mat.Base = texture(retex,vTexCoord.st,-.5);
 #endif
 	mat.Normal = ApplyNormalMap(vTexCoord.st);
 }