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[carveJwlIkooP6JGAAIwe30JlM.git] / shaders / common_world.glsl

diff --git a/shaders/common_world.glsl b/shaders/common_world.glsl
index b5c79dfac683779b4ddfe6977f7c20c823b929f5..ccf416eadd9a3d88469cb89388bab31167838ebc 100644 (file)
--- a/shaders/common_world.glsl
+++ b/shaders/common_world.glsl
@@ -9,12 +9,18 @@ layout (std140) uniform ub_world_lighting
    vec4 g_water_plane;
    vec4 g_depth_bounds;
    float g_water_fog;
+   float g_time;
    int g_light_count;
    int g_light_preview;
    int g_shadow_samples;
 
-   vec4 g_point_light_positions[32];
-   vec4 g_point_light_colours[32];
+   int g_debug_indices;
+   int g_debug_complexity;
+
+   // g_time ?
+
+   //vec4 g_point_light_positions[32];
+   //vec4 g_point_light_colours[32];
 };
 
 uniform sampler2D g_world_depth;
@@ -25,6 +31,13 @@ float world_depth_sample( vec3 pos )
    return texture( g_world_depth, depth_coord ).r;
 }
 
+float world_water_depth( vec3 pos )
+{
+   vec2 depth_coord = (pos.xz - g_depth_bounds.xy) * g_depth_bounds.zw; 
+   float ref_depth = g_water_plane.y*g_water_plane.w;
+   return texture( g_world_depth, depth_coord ).g - ref_depth;
+}
+
 float shadow_sample( vec3 vdir )
 {
    vec3 sample_pos = aWorldCo + vdir;
@@ -34,15 +47,6 @@ float shadow_sample( vec3 vdir )
    return clamp( fdelta, 0.1, 0.2 )-0.1;
 }
 
-float sdLine( vec3 p, vec3 a, vec3 b )
-{
-  vec3 pa = p - a;
-  vec3 ba = b - a;
-
-  float h = clamp( dot(pa,ba)/dot(ba,ba), 0.0, 1.0 );
-  return length( pa - ba*h );
-}
-
 vec3 apply_fog( vec3 vfrag, float fdist )
 {
    float dist = pow(fdist*0.0008,1.2);
@@ -57,7 +61,7 @@ vec3 newlight_compute_ambient()
    return g_ambient_colour.rgb;
 }
 
-float newlight_compute_sun_shadow()
+float newlight_compute_sun_shadow( vec3 dir )
 {
    if( g_shadow_samples == 0 )
    {
@@ -65,7 +69,7 @@ float newlight_compute_sun_shadow()
    }
 
    float fspread = g_light_colours[0].w;
-   vec3  vdir = g_light_directions[0].xyz;
+   vec3  vdir = dir;
    float flength = g_light_directions[0].w;
 
    float famt = 0.0;
@@ -78,12 +82,7 @@ float newlight_compute_sun_shadow()
    famt+=shadow_sample((vdir+vec3( 0.522,-0.379, 0.350)*fspread)*flength*0.7);
    famt+=shadow_sample((vdir+vec3( 0.483, 0.201, 0.306)*fspread)*flength*0.8);
 
-   // player shadow
-   float dist_to_player = max( 0.0, sdLine( aWorldCo, uBoard0, uBoard1 )-0.1 );
-   float player_shadow = max( 1.0-dist_to_player*2.7, 0.0 );
-   player_shadow *= player_shadow*player_shadow*player_shadow;
-
-   return 1.0 - max( player_shadow*0.8, famt );
+   return 1.0 - famt;
 }
 
 vec3 newlight_compute_world_diffuse( vec3 wnormal )
@@ -112,8 +111,14 @@ vec3 newlight_compute_sun_spec( vec3 wnormal, vec3 halfview, float fintensity )
    return vcolour*spec*fintensity;
 }
 
+float newlight_specular( vec3 wnormal, vec3 dir, vec3 halfview, float exponent )
+{
+   vec3 specdir = reflect( -dir, wnormal );
+   return pow(max(dot( halfview, specdir ), 0.0), exponent);
+}
+
 vec3 newlight_compute_quadratic( vec3 wnormal, vec3 halfview, 
-                                 vec3 light_pos, vec3 light_colour )
+                                 vec3 light_colour, vec3 light_pos )
 {
    vec3 light_delta = (light_pos-aWorldCo) * 10.0;
 
@@ -123,3 +128,21 @@ vec3 newlight_compute_quadratic( vec3 wnormal, vec3 halfview,
 
    return light_colour*attenuation;
 }
+
+vec3 newlight_compute_spot( vec3 wnormal, vec3 halfview, 
+                            vec3 light_colour, vec3 light_pos,
+                            vec4 light_dir )
+{
+   vec3 light_delta = (light_pos-aWorldCo) * 10.0;
+
+   float quadratic = dot(light_delta,light_delta);
+   float attenuation = 1.0f/( 1.0f + quadratic );
+
+   light_delta = normalize( light_delta );
+   attenuation *= max( 0.0, dot( light_delta, wnormal ) );
+
+   float spot_theta = max( 0.0, dot( light_delta, -light_dir.xyz ) ),
+            falloff = max( 0.0,( spot_theta - light_dir.w ) / (1.0-light_dir.w) );
+
+   return light_colour*attenuation*falloff;
+}