Some more GLES2 tuning..

2 files changed, 24 insertions, 5 deletions

diff --git a/drivers/gles2/shaders/cubemap_filter.glsl b/drivers/gles2/shaders/cubemap_filter.glsl
index 67b937984e..ee028cb1ff 100644
--- a/drivers/gles2/shaders/cubemap_filter.glsl
+++ b/drivers/gles2/shaders/cubemap_filter.glsl
@@ -167,17 +167,21 @@ void main() {
 
 		vec3 H = ImportanceSampleGGX(xi, roughness, N);
 		vec3 V = N;
-		vec3 L = normalize(2.0 * dot(V, H) * H - V);
+		vec3 L = (2.0 * dot(V, H) * H - V);
 
 		float NdotL = clamp(dot(N, L), 0.0, 1.0);
 
 		if (NdotL > 0.0) {
 
 #ifdef USE_SOURCE_PANORAMA
-			sum.rgb += texturePanorama(source_panorama, L).rgb * NdotL;
+			vec3 val = texturePanorama(source_panorama, L).rgb;
 #else
-			sum.rgb += textureCubeLod(source_cube, L, 0.0).rgb * NdotL;
+			vec3 val = textureCubeLod(source_cube, L,0.0).rgb;
 #endif
+			//mix using Linear, to approximate high end back-end
+			val = mix(pow((val + vec3(0.055)) * (1.0 / (1.0 + 0.055)), vec3(2.4)), val * (1.0 / 12.92), vec3(lessThan(val, vec3(0.04045))));
+
+			sum.rgb += val * NdotL;
 
 			sum.a += NdotL;
 		}
@@ -185,5 +189,8 @@ void main() {
 
 	sum /= sum.a;
 
+	vec3 a = vec3(0.055);
+	sum.rgb = mix((vec3(1.0) + a) * pow(sum.rgb, vec3(1.0 / 2.4)) - a, 12.92 * sum.rgb, vec3(lessThan(sum.rgb, vec3(0.0031308))));
+
 	gl_FragColor = vec4(sum.rgb, 1.0);
 }
diff --git a/drivers/gles2/shaders/scene.glsl b/drivers/gles2/shaders/scene.glsl
index fc20cb81a2..e45442386d 100644
--- a/drivers/gles2/shaders/scene.glsl
+++ b/drivers/gles2/shaders/scene.glsl
@@ -1757,8 +1757,14 @@ FRAGMENT_SHADER_CODE
 
 	// environment BRDF approximation
 
-	// TODO shadeless
+
 	{
+
+#if defined(DIFFUSE_TOON)
+		//simplify for toon, as
+		specular_light *= specular * metallic * albedo * 2.0;
+#else
+		//TODO: this curve is not really designed for gammaspace, should be adjusted
 		const vec4 c0 = vec4(-1.0, -0.0275, -0.572, 0.022);
 		const vec4 c1 = vec4(1.0, 0.0425, 1.04, -0.04);
 		vec4 r = roughness * c0 + c1;
@@ -1767,10 +1773,16 @@ FRAGMENT_SHADER_CODE
 		vec2 AB = vec2(-1.04, 1.04) * a004 + r.zw;
 
 		vec3 specular_color = metallic_to_specular_color(metallic, specular, albedo);
-		specular_light *= AB.x * specular_color + AB.y;
+		specular_light *= AB.x * specular_color + AB.y;				
+#endif
 	}
 
 	gl_FragColor = vec4(ambient_light + diffuse_light + specular_light, alpha);
+
+	//add emission if in base pass
+#ifdef BASE_PASS
+	gl_FragColor.rgb += emission;
+#endif
 	// gl_FragColor = vec4(normal, 1.0);
 
 #endif //unshaded