add custom blendings and custom materials to sprite and spine

samples/bin/library/scene_prefab.json

@@ -15,6 +15,9 @@
     }, {
         "prototype" : "ship_prefab.json",
         "components" : {
+            "sprite_renderer" : {
+                "blending" : "additive"
+            },
             "actor" : {
                 "translation" : [-50,-50,0]
             }

samples/bin/library/ship_prefab.json

@@ -1,11 +1,6 @@
 {
     "prototype" : "sprite_prefab.json",
     "components" : {
-        "renderer" : {
-            "materials" : [
-                "sprite_material.json"
-            ]
-        },
         "sprite_renderer" : {
             "sprite" : "ship_sprite.json"
         }

samples/bin/library/spine_coin_prefab.json

@@ -1,8 +1,6 @@
 {
+    "prototype" : "spine_prefab.json",
     "components" : {
-        "renderer" : {
-            "materials" : ["spine_material.json"]
-        },
         "spine_player" : {
             "model" : "spine_coin.json"
         },

samples/bin/library/spine_material_additive.json

@@ -0,0 +1,14 @@
+{
+    "passes" : [{
+        "shader" : "spine_shader.json",
+        "state_block" : {
+            "blending_state" : {
+                "src_factor" : "one",
+                "dst_factor" : "one"
+            },
+            "capabilities_state" : {
+                "blending" : true
+            }
+        }
+    }]
+}

samples/bin/library/spine_material_multiply.json

@@ -3,7 +3,7 @@
         "shader" : "spine_shader.json",
         "state_block" : {
             "blending_state" : {
-                "src_factor" : "src_alpha",
+                "src_factor" : "dst_color",
                 "dst_factor" : "one_minus_src_alpha"
             },
             "capabilities_state" : {

samples/bin/library/spine_material_normal.json

@@ -0,0 +1,14 @@
+{
+    "passes" : [{
+        "shader" : "spine_shader.json",
+        "state_block" : {
+            "blending_state" : {
+                "src_factor" : "one",
+                "dst_factor" : "one_minus_src_alpha"
+            },
+            "capabilities_state" : {
+                "blending" : true
+            }
+        }
+    }]
+}

samples/bin/library/spine_material_screen.json

@@ -0,0 +1,14 @@
+{
+    "passes" : [{
+        "shader" : "spine_shader.json",
+        "state_block" : {
+            "blending_state" : {
+                "src_factor" : "one",
+                "dst_factor" : "one_minus_src_color"
+            },
+            "capabilities_state" : {
+                "blending" : true
+            }
+        }
+    }]
+}

samples/bin/library/spine_prefab.json

@@ -0,0 +1,15 @@
+{
+    "components" : {
+        "renderer" : {},
+        "spine_player" : {
+            "materials" : {
+                "additive" : "spine_material_additive.json",
+                "multiply" : "spine_material_multiply.json",
+                "normal" : "spine_material_normal.json",
+                "screen" : "spine_material_screen.json"
+            }
+        },
+        "spine_player_cmd" : {},
+        "spine_player_evt" : {}
+    }
+}

samples/bin/library/spine_raptor_prefab.json

@@ -1,8 +1,6 @@
 {
+    "prototype" : "spine_prefab.json",
     "components" : {
-        "renderer" : {
-            "materials" : ["spine_material.json"]
-        },
         "spine_player" : {
             "model" : "spine_raptor.json"
         },

samples/bin/library/spine_shader.frag

@@ -4,5 +4,7 @@ varying vec2 v_st0;
 varying vec4 v_color0;
 
 void main() {
-    gl_FragColor = texture2D(u_texture, v_st0) * v_color0;
+    vec4 c = texture2D(u_texture, v_st0) * v_color0;
+    c.rgb *= c.a;
+    gl_FragColor = c;
 }

samples/bin/library/spine_shader.vert

@@ -1,3 +1,4 @@
+uniform vec2 u_screen_s;
 uniform mat4 u_matrix_vp;
 
 attribute vec3 a_vertex;
@@ -7,6 +8,19 @@ attribute vec4 a_color0;
 varying vec2 v_st0;
 varying vec4 v_color0;
 
+vec2 round(vec2 v) {
+    return vec2(
+        floor(v.x + 0.5),
+        floor(v.y + 0.5));
+}
+
+vec4 pixel_snap(vec4 pos) {
+    vec2 hpc = u_screen_s * 0.5;
+    vec2 pixel_pos = round((pos.xy / pos.w) * hpc);
+    pos.xy = pixel_pos / hpc * pos.w;
+    return pos;
+}
+
 vec4 vertex_to_homo(vec3 pos) {
     return vec4(pos, 1.0) * u_matrix_vp;
 }
@@ -14,5 +28,9 @@ vec4 vertex_to_homo(vec3 pos) {
 void main() {
     v_st0 = a_st0;
     v_color0 = a_color0;
+#ifndef VERTEX_SNAPPING_ON
     gl_Position = vertex_to_homo(a_vertex);
+#else
+    gl_Position = pixel_snap(vertex_to_homo(a_vertex));
+#endif
 }

samples/bin/library/sprite_material_additive.json

@@ -0,0 +1,14 @@
+{
+    "passes" : [{
+        "shader" : "sprite_shader.json",
+        "state_block" : {
+            "blending_state" : {
+                "src_factor" : "one",
+                "dst_factor" : "one"
+            },
+            "capabilities_state" : {
+                "blending" : true
+            }
+        }
+    }]
+}

samples/bin/library/sprite_material_multiply.json

@@ -0,0 +1,14 @@
+{
+    "passes" : [{
+        "shader" : "sprite_shader.json",
+        "state_block" : {
+            "blending_state" : {
+                "src_factor" : "dst_color",
+                "dst_factor" : "one_minus_src_alpha"
+            },
+            "capabilities_state" : {
+                "blending" : true
+            }
+        }
+    }]
+}

samples/bin/library/sprite_material_screen.json

@@ -0,0 +1,14 @@
+{
+    "passes" : [{
+        "shader" : "sprite_shader.json",
+        "state_block" : {
+            "blending_state" : {
+                "src_factor" : "one",
+                "dst_factor" : "one_minus_src_color"
+            },
+            "capabilities_state" : {
+                "blending" : true
+            }
+        }
+    }]
+}

samples/bin/library/sprite_prefab.json

@@ -1,6 +1,13 @@
 {
     "components" : {
         "renderer" : {},
-        "sprite_renderer" : {}
+        "sprite_renderer" : {
+            "materials" : {
+                "additive" : "sprite_material_additive.json",
+                "multiply" : "sprite_material_multiply.json",
+                "normal" : "sprite_material_normal.json",
+                "screen" : "sprite_material_screen.json"
+            }
+        }
     }
 }