X-Git-Url: https://harrygodden.com/git/?a=blobdiff_plain;f=shaders%2Fscene_fxglow.h;h=c47d6ab71a205cb23457362449bc083e1a286f50;hb=e311bbe2fa903a7e2a922f202f389b799193195d;hp=f5c14c3a8f90af7085bf9856216a180668e2d5bc;hpb=1a7f4a35e88698bdb45c90f646f1645589d5511c;p=carveJwlIkooP6JGAAIwe30JlM.git

diff --git a/shaders/scene_fxglow.h b/shaders/scene_fxglow.h
index f5c14c3..c47d6ab 100644
--- a/shaders/scene_fxglow.h
+++ b/shaders/scene_fxglow.h
@@ -68,6 +68,11 @@ static struct vg_shader _shader_scene_fxglow = {
 "\n"
 "#line       1        1 \n"
 "// :D\n"
+"const float CLEARSKIES_LIGHT_DOT_MIN = 0.0;\n"
+"\n"
+"#line      5        0 \n"
+"#line       1        2 \n"
+"// :D\n"
 "\n"
 "in vec2 aUv;\n"
 "in vec4 aNorm;\n"
@@ -227,8 +232,9 @@ static struct vg_shader _shader_scene_fxglow = {
 "                               g_sunset_phase );\n"
 "\n"
 "   vec3  sky_reflection = 0.5 * fresnel * reflect_colour;\n"
-"   vec3  light_sun      = max(0.0,dot(normal,g_sun_dir.xyz)*0.75+0.25) \n"
-"                           * g_sun_colour.rgb * g_day_phase;\n"
+"   vec3  light_sun      = max( CLEARSKIES_LIGHT_DOT_MIN, \n"
+"                               dot(normal,g_sun_dir.xyz)*0.75+0.25\n"
+"                           ) * g_sun_colour.rgb * g_day_phase;\n"
 "\n"
 "   float scaled_shadow = max( shadow, 1.0 - max(g_sun_dir.y,0.0) );\n"
 "   vec3 ambient = mix( g_ambient_colour.rgb, g_sunset_ambient.rgb, \n"
@@ -433,8 +439,8 @@ static struct vg_shader _shader_scene_fxglow = {
 "   return world_compute_lighting( diffuse, normal, co, compute_board_shadow() );\n"
 "}\n"
 "\n"
-"#line      5        0 \n"
-"#line       1        2 \n"
+"#line      6        0 \n"
+"#line       1        3 \n"
 "const float k_motion_lerp_amount = 0.01;\n"
 "\n"
 "#line      2        0 \n"
@@ -453,7 +459,7 @@ static struct vg_shader _shader_scene_fxglow = {
 "   oMotionVec = (vmotion1-vmotion0) * (1.0/k_motion_lerp_amount);\n"
 "}\n"
 "\n"
-"#line      6        0 \n"
+"#line      7        0 \n"
 "\n"
 "void main(){\n"
 "   oMotionVec = vec2(0.0);\n"