rimlight control

demos/03-anims.c

@@ -25,6 +25,10 @@ int main() {
     model_t  mdl = model("Stan.fbx", MODEL_RIMLIGHT);
     anims_t    a = animations("Stan.fbx", 0);
 
+    // shader_bind(mdl.program);
+    // shader_vec3("u_rimcolor", vec3(0.12,0.23,0.34));
+    // shader_vec3("u_rimrange", vec3(0.06,0.74,0.5));
+
     // load all postfx files in all subdirs
     fx_load("fx**.fs");
 
@@ -133,6 +137,19 @@ int main() {
             }
             ui_panel_end();
         }
+        if ( ui_panel("Rim lighting", 0) ) {
+            static vec3 rimcolor = {0.2,0.2,0.2};
+            static vec3 rimrange = {0.11,0.98,0.5};
+            ui_color3f("Color", &rimcolor.x);
+            ui_clampf("Low", &rimrange.x, 0, 1);
+            ui_clampf("High", &rimrange.y, 0, 1);
+            ui_clampf("Mix", &rimrange.z, 0, 1);
+            // ui_vec
+            shader_bind(mdl.program);
+            shader_vec3("u_rimcolor", rimcolor);
+            shader_vec3("u_rimrange", rimrange);
+            ui_panel_end();
+        }
         if( ui_panel("FX", 0) ) {
             for( int i = 0; i < 64; ++i ) {
                 char *name = fx_name(i); if( !name ) break;

engine/art/shaders/fs_32_4_model.glsl

@@ -11,6 +11,8 @@ in vec3 v_position;
 uniform mat4 M; // RIM
 uniform vec3 u_rimcolor = vec3(0.2,0.2,0.2);
 uniform vec3 u_rimrange = vec3(0.11,0.98,0.5);
+uniform vec3 u_rimpivot = vec3(0,0,0);
+uniform bool u_rimambient = true;
 #endif
 in vec3 v_normal, v_normal_ws;
 in vec2 v_texcoord;
@@ -68,7 +70,10 @@ if(u_matcaps) {
         #ifdef RIM
         {vec3 n = normalize(mat3(M) * v_normal);  // convert normal to view space
         vec3 p = (M * vec4(v_position,1.0)).xyz; // convert position to view space
-        vec3 v = normalize(vpeye.xyz-p);                  // eye vector
+        vec3 v = vec3(0,-1,0);
+        if (!u_rimambient) {
+            v = normalize(u_rimpivot-p);
+        }
         float rim = 1.0 - max(dot(v,n), 0.0);
         vec3 col = u_rimcolor*(pow(smoothstep(1.0-u_rimrange.x,u_rimrange.y,rim), u_rimrange.z));
         fragcolor += vec4(col, 1.0);}

engine/joint/v4k.h

@@ -344064,6 +344064,7 @@ void model_destroy(model_t m) {
 anims_t animations(const char *pathfile, int flags) {
     anims_t a = {0};
     char *anim_file = vfs_read(va("%s@animlist.txt", pathfile));
+    if (!anim_file) return a;
     for each_substring(anim_file, "\r\n", anim) {
         int from, to;
         char anim_name[128] = {0};

engine/split/v4k_render.c

@@ -4498,6 +4498,7 @@ void model_destroy(model_t m) {
 anims_t animations(const char *pathfile, int flags) {
     anims_t a = {0};
     char *anim_file = vfs_read(va("%s@animlist.txt", pathfile));
+    if (!anim_file) return a;
     for each_substring(anim_file, "\r\n", anim) {
         int from, to;
         char anim_name[128] = {0};

engine/v4k.c

@@ -14762,6 +14762,7 @@ void model_destroy(model_t m) {
 anims_t animations(const char *pathfile, int flags) {
     anims_t a = {0};
     char *anim_file = vfs_read(va("%s@animlist.txt", pathfile));
+    if (!anim_file) return a;
     for each_substring(anim_file, "\r\n", anim) {
         int from, to;
         char anim_name[128] = {0};