relief map support, small refactoring, shadow bias now based on geometry normal

shaders/ds_light.glsl

@@ -18,8 +18,8 @@ in vec3 view_dir, world_dir;
 
 uniform vec2 dt, shadow_size;
 uniform float z_near;
-uniform sampler2D tex_coeffs[2], tex_noise;
-uniform sampler2D tex_0, tex_1, tex_2, tex_3, tex_4, tex_sh;
+uniform sampler2D tex_coeff_brdf, tex_noise;
+uniform sampler2D tex_0, tex_1, tex_2, tex_3, tex_4, tex_5, tex_sh;
 //uniform sampler2DShadow tex_shadow[16];
 uniform sampler2DArrayShadow tex_shadows_cone;
 uniform sampler2DArray tex_depths_cone;
@@ -42,7 +42,7 @@ const float PI = 3.1416;
 ivec2 tc;
 vec4 pos, lpos, shp;
 vec3 li, si, ldir, halfV, bn, bn2, lwdir;
-vec3 normal, vds, vds2;
+vec3 normal, geom_normal, vds, vds2;
 float rough_diff, rough_spec, dist, NdotL, NdotH, spot, ldist, diff, spec, sdist, shadow, shadow_dz;
 uint flags;
 
@@ -67,7 +67,7 @@ float getShadowCone(in vec3 uvz, in int layer) {
 	uvv[3] = iuvp.x * iuvp.y;
 	shadow_dz = max(max(uvz.z - gt[0], uvz.z - gt[1]), max(uvz.z - gt[2], uvz.z - gt[3]));
 	return clamp(dot(step(vec4(uvz.z), gt), uvv), 0, 1);*/
-	float z = 1 - 1 / (uvz.z - z_near + 1);
+	float z = 1. - 1. / (uvz.z - z_near + 1.);
 	return texture(tex_shadows_cone, vec4(uvz.xy, layer, z));
 }
 
@@ -83,7 +83,7 @@ float getShadowOmni(in vec4 uvwz, in int layer) {
 	uvv[2] =  uvp.y * iuvp.z;
 	uvv[3] = iuvp.y * iuvp.z;
 	return clamp(dot(step(vec4(uvwz.w), gt), uvv), 0, 1);*/
-	float d = 1 - 1 / (uvwz.w - z_near + 1);
+	float d = 1. - 1. / (uvwz.w - z_near + 1.);
 	return texture(tex_shadows_omni, vec4(uvwz.xyz, layer), d);
 	//return step(uvwz.w, gt[3]);
 }
@@ -110,7 +110,7 @@ float floatConstruct( uint m ) {
     m |= ieeeOne;                          // Add fractional part to 1.0
 
     float  f = uintBitsToFloat( m );       // Range [1:2]
-    return f - 1.0;                        // Range [0:1]
+    return f - 1.;                        // Range [0:1]
 }
 float random( float x ) { return floatConstruct(hash(floatBitsToUint(x))); }
 float random( vec2  v ) { return floatConstruct(hash(floatBitsToUint(v))); }
@@ -174,11 +174,13 @@ void calcLight(in int index, in vec3 n, in vec3 v) {
 #endif
 
 	if (int(round(qgl_light_parameter[index].flags)) == 1 && bitfieldExtract(flags, 3, 1) == 1 && (spot > 1E-4)) {
+#ifndef SPOT
 		vec3 odir = -(view_mat * ldir);
+#endif
 		int layer = index - lights_start;
 		float shadow = 0.;
 		//float bias = abs(tan(PI/2.*(1 - abs(dot(normal, ldir)))) + 1) * z_near * 1;
-		float bias = (1. + 1. / abs(dot(normal, ldir))) * z_near * 2.;
+		float bias = (1. + 1. / abs(dot(geom_normal, ldir))) * z_near * 2.;
 		//bias = bias * bias + z_near;
 		
 		if (soft_shadows_enabled) {
@@ -291,10 +293,12 @@ void main(void) {
 	vec4 v0 = texelFetch(tex_0, tc, 0),
 		 v2 = texelFetch(tex_2, tc, 0),
 		 v3 = texelFetch(tex_3, tc, 0),
-		 v4 = texelFetch(tex_4, tc, 0);
+		 v4 = texelFetch(tex_4, tc, 0),
+		 v5 = texelFetch(tex_5, tc, 0);
 
 	vec3 diffuse       = v0.rgb;
 		 normal        = v1.xyz;
+	geom_normal        = v5.xyz;
 	vec3 emission      = v3.rgb;
 	float alpha        = v0.a;
 	float metalness    = v2.r;
@@ -324,7 +328,7 @@ void main(void) {
 	li *= (1. - shlick);
 	alpha = min(1., alpha * (1. + shlick));
 	
-	vec2 brdf = texture(tex_coeffs[0], vec2(NdotV*0.99, roughness*0.995)).rg;
+	vec2 brdf = texture(tex_coeff_brdf, vec2(NdotV*0.99, roughness*0.995)).rg;
 	float env_spec = shlick * brdf.x + brdf.y;
 	vec3 spec_col = mix(vec3(1.), diffuse, metalness);
 	vec3 env_dir = view_mat * reflect(-v, normal);
@@ -341,8 +345,9 @@ void main(void) {
 	}
 	
 	qgl_FragColor = vec4(res_col, alpha);
+	//qgl_FragColor = vec4(diffuse.rgb, 0.25);
 	//qgl_FragColor.a = alpha;
-	//qgl_FragColor.rgb = vec3(bn.z);
+	//qgl_FragColor.rgb = vec3(geom_normal.rgb);
 	//qgl_FragColor.rgba = vec4(vec3(0), 0.5);
 	
 #ifdef SPOT