Merge pull request hdl#307 from hdl/die_shot

Add an option in OpenROAD to export a die shot.

Author: mikesinouye

place_and_route/build_defs.bzl

@@ -90,6 +90,10 @@ place_and_route = rule(
         "core_padding_microns": attr.int(
             mandatory = True,
         ),
+        "create_die_shot": attr.bool(
+            default = False,
+            doc = "Exports a die shot image of the design. This requires qt support.",
+        ),
         "density_fill_config": attr.label(
             allow_single_file = True,
         ),
@@ -114,6 +118,10 @@ place_and_route = rule(
             default = "0.69",
             doc = "When performing global placement this is how densely our cells should be packaged on the die parameter is (0-1]",
         ),
+        "qt_qpa_platform": attr.string(
+            default = "minimal",
+            doc = "The qt platform to use with OpenROAD.",
+        ),
         "sdc": attr.label(
             allow_single_file = True,
         ),

place_and_route/open_road.bzl

@@ -256,6 +256,7 @@ def openroad_command(ctx, commands, input_db = None, step_name = None, inputs =
         tools = tool_inputs,
         input_manifests = input_manifests,
         env = {
+            "QT_QPA_PLATFORM": ctx.attr.qt_qpa_platform,
             "TCL_LIBRARY": openroad_runfiles_dir + "/tk_tcl/library",
         },
         execution_requirements = execution_requirements,

place_and_route/private/benchmark.bzl

@@ -42,12 +42,20 @@ def benchmark(ctx, open_road_info):
         "report_cell_usage",
     ]
 
+    cmd_outputs = []
+
+    if ctx.attr.create_die_shot:
+        image_file = ctx.actions.declare_file(ctx.label.name + "_die.png")
+        open_road_commands.append("save_image -width 2048 {out}".format(out = image_file.path))
+        cmd_outputs.append(image_file)
+
     command_output = openroad_command(
         ctx,
         commands = open_road_commands,
         input_db = open_road_info.output_db,
         inputs = inputs,
         step_name = "benchmark",
+        outputs = cmd_outputs,
     )
 
     benchmark_file = ctx.actions.declare_file(ctx.label.name + "_report.textproto")
@@ -87,7 +95,7 @@ def benchmark(ctx, open_road_info):
         commands = open_road_commands,
         input_files = depset(inputs),
         output_db = command_output.db,
-        logs = depset([command_output.log_file, benchmark_file]),
+        logs = depset([command_output.log_file, benchmark_file] + cmd_outputs),
     )
 
     return merge_open_road_info(open_road_info, current_action_open_road_info)