GLSL: clean up GLSL output whitespace generation.

More line() and less std::endl.
More automated indents and less manual spacing.
Put a single newline after every struct and function declaration.

Note that this does touch every test result, but only affects whitespace.

Change-Id: I7506b9029b79b91fb335911dba44369b36f09bbe
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/78300
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Stephen White <senorblanco@chromium.org>

test/statements/assign/indexed_assign_to_array_in_struct/in_for_loop_body.wgsl.expected.glsl

@@ -4,9 +4,11 @@ precision mediump float;
 struct Uniforms {
   uint i;
 };
+
 struct InnerS {
   int v;
 };
+
 struct OuterS {
   InnerS a1[8];
 };
@@ -26,8 +28,8 @@ void tint_symbol() {
   }
   return;
 }
+
 void main() {
   tint_symbol();
 }
 
-

test/statements/assign/indexed_assign_to_array_in_struct/in_for_loop_continuing.wgsl.expected.glsl

@@ -4,9 +4,11 @@ precision mediump float;
 struct Uniforms {
   uint i;
 };
+
 struct InnerS {
   int v;
 };
+
 struct OuterS {
   InnerS a1[8];
 };
@@ -26,8 +28,8 @@ void tint_symbol() {
   }
   return;
 }
+
 void main() {
   tint_symbol();
 }
 
-

test/statements/assign/indexed_assign_to_array_in_struct/in_for_loop_init.wgsl.expected.glsl

@@ -4,9 +4,11 @@ precision mediump float;
 struct Uniforms {
   uint i;
 };
+
 struct InnerS {
   int v;
 };
+
 struct OuterS {
   InnerS a1[8];
 };
@@ -26,8 +28,8 @@ void tint_symbol() {
   }
   return;
 }
+
 void main() {
   tint_symbol();
 }
 
-

test/statements/assign/indexed_assign_to_array_in_struct/indexing_with_side_effect_func.wgsl.expected.glsl

@@ -5,18 +5,20 @@ struct Uniforms {
   uint i;
   uint j;
 };
+
 struct InnerS {
   int v;
 };
+
 struct S1 {
   InnerS a2[8];
 };
+
 struct OuterS {
   S1 a1[8];
 };
 
 uint nextIndex = 0u;
-
 uint getNextIndex() {
   nextIndex = (nextIndex + 1u);
   return nextIndex;
@@ -34,8 +36,8 @@ void tint_symbol() {
   s.a1[getNextIndex()].a2[uniforms.j] = v;
   return;
 }
+
 void main() {
   tint_symbol();
 }
 
-

test/statements/assign/indexed_assign_to_array_in_struct/struct_array.wgsl.expected.glsl

@@ -4,9 +4,11 @@ precision mediump float;
 struct Uniforms {
   uint i;
 };
+
 struct InnerS {
   int v;
 };
+
 struct OuterS {
   InnerS a1[8];
 };
@@ -22,8 +24,8 @@ void tint_symbol() {
   s1.a1[uniforms.i] = v;
   return;
 }
+
 void main() {
   tint_symbol();
 }
 
-

test/statements/assign/indexed_assign_to_array_in_struct/struct_array_array.wgsl.expected.glsl

@@ -5,9 +5,11 @@ struct Uniforms {
   uint i;
   uint j;
 };
+
 struct InnerS {
   int v;
 };
+
 struct OuterS {
   InnerS a1[8][8];
 };
@@ -24,8 +26,8 @@ void tint_symbol() {
   s1.a1[uniforms.i][uniforms.j] = v;
   return;
 }
+
 void main() {
   tint_symbol();
 }
 
-

test/statements/assign/indexed_assign_to_array_in_struct/struct_array_struct.wgsl.expected.glsl

@@ -4,12 +4,15 @@ precision mediump float;
 struct Uniforms {
   uint i;
 };
+
 struct InnerS {
   int v;
 };
+
 struct S1 {
   InnerS s2;
 };
+
 struct OuterS {
   S1 a1[8];
 };
@@ -25,8 +28,8 @@ void tint_symbol() {
   s1.a1[uniforms.i].s2 = v;
   return;
 }
+
 void main() {
   tint_symbol();
 }
 
-

test/statements/assign/indexed_assign_to_array_in_struct/struct_array_struct_array.wgsl.expected.glsl

@@ -5,12 +5,15 @@ struct Uniforms {
   uint i;
   uint j;
 };
+
 struct InnerS {
   int v;
 };
+
 struct S1 {
   InnerS a2[8];
 };
+
 struct OuterS {
   S1 a1[8];
 };
@@ -27,8 +30,8 @@ void tint_symbol() {
   s.a1[uniforms.i].a2[uniforms.j] = v;
   return;
 }
+
 void main() {
   tint_symbol();
 }
 
-

test/statements/assign/indexed_assign_to_array_in_struct/struct_dynamic_array.wgsl.expected.glsl

@@ -4,6 +4,7 @@ precision mediump float;
 struct Uniforms {
   uint i;
 };
+
 struct InnerS {
   int v;
 };
@@ -11,18 +12,18 @@ struct InnerS {
 layout(binding = 4) uniform Uniforms_1 {
   uint i;
 } uniforms;
+
 layout(binding = 0) buffer OuterS_1 {
   InnerS a1[];
 } s1;
-
 layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
 void tint_symbol() {
   InnerS v = InnerS(0);
   s1.a1[uniforms.i] = v;
   return;
 }
+
 void main() {
   tint_symbol();
 }
 
-

test/statements/assign/indexed_assign_to_array_in_struct/struct_dynamic_array_struct_array.wgsl.expected.glsl

@@ -5,9 +5,11 @@ struct Uniforms {
   uint i;
   uint j;
 };
+
 struct InnerS {
   int v;
 };
+
 struct S1 {
   InnerS a2[8];
 };
@@ -16,18 +18,18 @@ layout(binding = 4) uniform Uniforms_1 {
   uint i;
   uint j;
 } uniforms;
+
 layout(binding = 0) buffer OuterS_1 {
   S1 a1[];
 } s;
-
 layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
 void tint_symbol() {
   InnerS v = InnerS(0);
   s.a1[uniforms.i].a2[uniforms.j] = v;
   return;
 }
+
 void main() {
   tint_symbol();
 }
 
-

test/statements/assign/indexed_assign_to_array_in_struct/struct_matrix.wgsl.expected.glsl

@@ -4,6 +4,7 @@ precision mediump float;
 struct Uniforms {
   uint i;
 };
+
 struct OuterS {
   mat2x4 m1;
 };
@@ -19,8 +20,8 @@ void tint_symbol() {
   s1.m1[uniforms.i][uniforms.i] = 1.0f;
   return;
 }
+
 void main() {
   tint_symbol();
 }
 
-

test/statements/assign/indexed_assign_to_array_in_struct/struct_multiple_arrays.wgsl.expected.glsl

@@ -4,9 +4,11 @@ precision mediump float;
 struct Uniforms {
   uint i;
 };
+
 struct InnerS {
   int v;
 };
+
 struct OuterS {
   InnerS a1[8];
   InnerS a2[8];
@@ -24,8 +26,8 @@ void tint_symbol() {
   s1.a2[uniforms.i] = v;
   return;
 }
+
 void main() {
   tint_symbol();
 }
 
-

test/statements/assign/indexed_assign_to_array_in_struct/struct_struct_array.wgsl.expected.glsl

@@ -4,12 +4,15 @@ precision mediump float;
 struct Uniforms {
   uint i;
 };
+
 struct InnerS {
   int v;
 };
+
 struct S1 {
   InnerS a[8];
 };
+
 struct OuterS {
   S1 s2;
 };
@@ -25,8 +28,8 @@ void tint_symbol() {
   s1.s2.a[uniforms.i] = v;
   return;
 }
+
 void main() {
   tint_symbol();
 }
 
-

test/statements/assign/indexed_assign_to_array_in_struct/struct_vector.wgsl.expected.glsl

@@ -4,6 +4,7 @@ precision mediump float;
 struct Uniforms {
   uint i;
 };
+
 struct OuterS {
   vec3 v1;
 };
@@ -18,8 +19,8 @@ void tint_symbol() {
   s1.v1[uniforms.i] = 1.0f;
   return;
 }
+
 void main() {
   tint_symbol();
 }
 
-

test/statements/assign/indexed_assign_to_array_in_struct/vector_assign.wgsl.expected.glsl

@@ -4,6 +4,7 @@ precision mediump float;
 struct Uniforms {
   uint i;
 };
+
 struct OuterS {
   uint a1[8];
 };
@@ -24,8 +25,8 @@ void tint_symbol() {
   v[f(s1.a1[uniforms.i])] = 1.0f;
   return;
 }
+
 void main() {
   tint_symbol();
 }
 
-

test/statements/assign/indexed_assign_to_array_in_struct/via_pointer.wgsl.expected.glsl

@@ -4,9 +4,11 @@ precision mediump float;
 struct Uniforms {
   uint i;
 };
+
 struct InnerS {
   int v;
 };
+
 struct OuterS {
   InnerS a1[8];
 };
@@ -23,8 +25,8 @@ void tint_symbol() {
   s1.a1[p_save] = v;
   return;
 }
+
 void main() {
   tint_symbol();
 }
 
-

test/statements/assign/indexed_assign_to_array_in_struct/via_pointer_arg.wgsl.expected.glsl

@@ -4,9 +4,11 @@ precision mediump float;
 struct Uniforms {
   uint i;
 };
+
 struct InnerS {
   int v;
 };
+
 struct OuterS {
   InnerS a1[8];
 };
@@ -26,8 +28,8 @@ void tint_symbol() {
   f(s1);
   return;
 }
+
 void main() {
   tint_symbol();
 }
 
-