Merge pull request #434 from JingyuanZhang/master

feat(webgl): update fuse_op add exp

Author: JingyuanZhang

packages/paddlejs-backend-webgl/src/ops/atom/common_func.ts

@@ -69,16 +69,16 @@ float tanh_func(float x, float y, float z) {
     return tanh_calc(x);
 }`;
 
-const exp = `
-float exp(float x, float y, float z) {
+const exp_func = `
+float exp_func(float x, float y, float z) {
     float result = exp(x);
     return result;
 }`;
 
 export {
     prelu,
     relu6,
-    exp,
+    exp_func,
     leakyRelu,
     scale,
     sigmoid,

packages/paddlejs-backend-webgl/src/ops/atom/fuse_ops.ts

@@ -89,6 +89,10 @@ export default function genFuseOpCode(params: OpParams) {
                     act_name = 'tanh_func';
                     break;
 
+                case 'exp':
+                    act_name = 'exp_func';
+                    break;
+
                 default:
                     break;
             }

packages/paddlejs-backend-webgl/src/utils/dataProcess.ts

@@ -130,6 +130,10 @@ function genGLSLArr(arr: Array<Number>, key: string, type: ArrTypeEnum) {
 }
 
 function getValueFromArrByIndex(arr: Array<number>, arrKey: string, type: ArrTypeEnum) {
+    if (arr.length === 0) {
+        return '';
+    }
+
     const ifConditions = arr.reduce((acc, _, idx) => {
         const ifCondition = idx === 0
             ? `