tint/test-runner: Split expectations for FXC and DXC

Change tint's `--fxc` flag to take the path of the FXC compiler DLL.
Have tint attempt to validate with both FXC and DXC if `--validate` is
passed.

Fix the 'dirsWithNoPassExpectations' logic which looks like it got
broken with the tint -> dawn merge. It also incorrectly applied
filepath.FromSlash() on windows.

Change-Id: I0f46aa5c21bc48a2abc48402c41f846aff4a8633
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/96800
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Commit-Queue: Ben Clayton <bclayton@chromium.org>

test/tint/bug/fxc/matrix_assignment_dynamic_index/local_assign_scalar_x.wgsl.expected.fxc.hlsl

@@ -0,0 +1,21 @@
+void set_scalar_float2x4(inout float2x4 mat, int col, int row, float val) {
+  switch (col) {
+    case 0:
+      mat[0] = (row.xxxx == int4(0, 1, 2, 3)) ? val.xxxx : mat[0];
+      break;
+    case 1:
+      mat[1] = (row.xxxx == int4(0, 1, 2, 3)) ? val.xxxx : mat[1];
+      break;
+  }
+}
+
+cbuffer cbuffer_uniforms : register(b4, space1) {
+  uint4 uniforms[1];
+};
+
+[numthreads(1, 1, 1)]
+void main() {
+  float2x4 m1 = float2x4(0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f);
+  set_scalar_float2x4(m1, 0, uniforms[0].x, 1.0f);
+  return;
+}

test/tint/bug/fxc/matrix_assignment_dynamic_index/local_assign_scalar_xy.wgsl.expected.fxc.hlsl

@@ -0,0 +1,21 @@
+void set_scalar_float2x4(inout float2x4 mat, int col, int row, float val) {
+  switch (col) {
+    case 0:
+      mat[0] = (row.xxxx == int4(0, 1, 2, 3)) ? val.xxxx : mat[0];
+      break;
+    case 1:
+      mat[1] = (row.xxxx == int4(0, 1, 2, 3)) ? val.xxxx : mat[1];
+      break;
+  }
+}
+
+cbuffer cbuffer_uniforms : register(b4, space1) {
+  uint4 uniforms[1];
+};
+
+[numthreads(1, 1, 1)]
+void main() {
+  float2x4 m1 = float2x4(0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f);
+  set_scalar_float2x4(m1, uniforms[0].y, uniforms[0].x, 1.0f);
+  return;
+}

test/tint/bug/fxc/matrix_assignment_dynamic_index/local_assign_vector.wgsl.expected.fxc.hlsl

@@ -0,0 +1,17 @@
+void set_vector_float2x4(inout float2x4 mat, int col, float4 val) {
+  switch (col) {
+    case 0: mat[0] = val; break;
+    case 1: mat[1] = val; break;
+  }
+}
+
+cbuffer cbuffer_uniforms : register(b4, space1) {
+  uint4 uniforms[1];
+};
+
+[numthreads(1, 1, 1)]
+void main() {
+  float2x4 m1 = float2x4(0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f);
+  set_vector_float2x4(m1, uniforms[0].x, (1.0f).xxxx);
+  return;
+}

test/tint/bug/fxc/matrix_assignment_dynamic_index/module_assign_scalar_x.wgsl.expected.fxc.hlsl

@@ -0,0 +1,21 @@
+void set_scalar_float2x4(inout float2x4 mat, int col, int row, float val) {
+  switch (col) {
+    case 0:
+      mat[0] = (row.xxxx == int4(0, 1, 2, 3)) ? val.xxxx : mat[0];
+      break;
+    case 1:
+      mat[1] = (row.xxxx == int4(0, 1, 2, 3)) ? val.xxxx : mat[1];
+      break;
+  }
+}
+
+cbuffer cbuffer_uniforms : register(b4, space1) {
+  uint4 uniforms[1];
+};
+static float2x4 m1 = float2x4(0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f);
+
+[numthreads(1, 1, 1)]
+void main() {
+  set_scalar_float2x4(m1, 0, uniforms[0].x, 1.0f);
+  return;
+}

test/tint/bug/fxc/matrix_assignment_dynamic_index/module_assign_scalar_xy.wgsl.expected.fxc.hlsl

@@ -0,0 +1,21 @@
+void set_scalar_float2x4(inout float2x4 mat, int col, int row, float val) {
+  switch (col) {
+    case 0:
+      mat[0] = (row.xxxx == int4(0, 1, 2, 3)) ? val.xxxx : mat[0];
+      break;
+    case 1:
+      mat[1] = (row.xxxx == int4(0, 1, 2, 3)) ? val.xxxx : mat[1];
+      break;
+  }
+}
+
+cbuffer cbuffer_uniforms : register(b4, space1) {
+  uint4 uniforms[1];
+};
+static float2x4 m1 = float2x4(0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f);
+
+[numthreads(1, 1, 1)]
+void main() {
+  set_scalar_float2x4(m1, uniforms[0].y, uniforms[0].x, 1.0f);
+  return;
+}

test/tint/bug/fxc/matrix_assignment_dynamic_index/module_assign_scalar_y.wgsl.expected.dxc.hlsl

@@ -0,0 +1,21 @@
+void set_scalar_float2x4(inout float2x4 mat, int col, int row, float val) {
+  switch (col) {
+    case 0:
+      mat[0] = (row.xxxx == int4(0, 1, 2, 3)) ? val.xxxx : mat[0];
+      break;
+    case 1:
+      mat[1] = (row.xxxx == int4(0, 1, 2, 3)) ? val.xxxx : mat[1];
+      break;
+  }
+}
+
+cbuffer cbuffer_uniforms : register(b4, space1) {
+  uint4 uniforms[1];
+};
+static float2x4 m1 = float2x4(0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f);
+
+[numthreads(1, 1, 1)]
+void main() {
+  set_scalar_float2x4(m1, uniforms[0].y, 0, 1.0f);
+  return;
+}

test/tint/bug/fxc/matrix_assignment_dynamic_index/module_assign_scalar_y.wgsl.expected.fxc.hlsl

@@ -0,0 +1,21 @@
+void set_scalar_float2x4(inout float2x4 mat, int col, int row, float val) {
+  switch (col) {
+    case 0:
+      mat[0] = (row.xxxx == int4(0, 1, 2, 3)) ? val.xxxx : mat[0];
+      break;
+    case 1:
+      mat[1] = (row.xxxx == int4(0, 1, 2, 3)) ? val.xxxx : mat[1];
+      break;
+  }
+}
+
+cbuffer cbuffer_uniforms : register(b4, space1) {
+  uint4 uniforms[1];
+};
+static float2x4 m1 = float2x4(0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f);
+
+[numthreads(1, 1, 1)]
+void main() {
+  set_scalar_float2x4(m1, uniforms[0].y, 0, 1.0f);
+  return;
+}

test/tint/bug/fxc/matrix_assignment_dynamic_index/module_assign_vector.wgsl.expected.fxc.hlsl

@@ -0,0 +1,17 @@
+void set_vector_float2x4(inout float2x4 mat, int col, float4 val) {
+  switch (col) {
+    case 0: mat[0] = val; break;
+    case 1: mat[1] = val; break;
+  }
+}
+
+cbuffer cbuffer_uniforms : register(b4, space1) {
+  uint4 uniforms[1];
+};
+static float2x4 m1 = float2x4(0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f);
+
+[numthreads(1, 1, 1)]
+void main() {
+  set_vector_float2x4(m1, uniforms[0].x, (1.0f).xxxx);
+  return;
+}