(mode)
| 1096 | } |
| 1097 | |
| 1098 | _getBlendState(mode) { |
| 1099 | switch (mode) { |
| 1100 | case constants.BLEND: |
| 1101 | return { |
| 1102 | color: { |
| 1103 | operation: 'add', |
| 1104 | srcFactor: 'one', |
| 1105 | dstFactor: 'one-minus-src-alpha' |
| 1106 | }, |
| 1107 | alpha: { |
| 1108 | operation: 'add', |
| 1109 | srcFactor: 'one', |
| 1110 | dstFactor: 'one-minus-src-alpha' |
| 1111 | } |
| 1112 | }; |
| 1113 | |
| 1114 | case constants.ADD: |
| 1115 | return { |
| 1116 | color: { |
| 1117 | operation: 'add', |
| 1118 | srcFactor: 'one', |
| 1119 | dstFactor: 'one' |
| 1120 | }, |
| 1121 | alpha: { |
| 1122 | operation: 'add', |
| 1123 | srcFactor: 'one', |
| 1124 | dstFactor: 'one' |
| 1125 | } |
| 1126 | }; |
| 1127 | |
| 1128 | case constants.REMOVE: |
| 1129 | return { |
| 1130 | color: { |
| 1131 | operation: 'add', |
| 1132 | srcFactor: 'zero', |
| 1133 | dstFactor: 'one-minus-src-alpha' |
| 1134 | }, |
| 1135 | alpha: { |
| 1136 | operation: 'add', |
| 1137 | srcFactor: 'zero', |
| 1138 | dstFactor: 'one-minus-src-alpha' |
| 1139 | } |
| 1140 | }; |
| 1141 | |
| 1142 | case constants.MULTIPLY: |
| 1143 | return { |
| 1144 | color: { |
| 1145 | operation: 'add', |
| 1146 | srcFactor: 'dst-color', |
| 1147 | dstFactor: 'one-minus-src-alpha' |
| 1148 | }, |
| 1149 | alpha: { |
| 1150 | operation: 'add', |
| 1151 | srcFactor: 'dst-alpha', |
| 1152 | dstFactor: 'one-minus-src-alpha' |
| 1153 | } |
| 1154 | }; |
| 1155 |