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-rw-r--r--src/osd/modules/render/bgfx/depthreader.cpp36
1 files changed, 36 insertions, 0 deletions
diff --git a/src/osd/modules/render/bgfx/depthreader.cpp b/src/osd/modules/render/bgfx/depthreader.cpp
new file mode 100644
index 00000000000..077137159fe
--- /dev/null
+++ b/src/osd/modules/render/bgfx/depthreader.cpp
@@ -0,0 +1,36 @@
+// license:BSD-3-Clause
+// copyright-holders:Ryan Holtz
+//============================================================
+//
+// depthreader.cpp - BGFX depth state JSON reader
+//
+//============================================================
+
+#include <bgfx/bgfx.h>
+
+#include "depthreader.h"
+
+const depth_reader::string_to_enum depth_reader::FUNCTION_NAMES[depth_reader::FUNCTION_COUNT] = {
+ { "never", BGFX_STATE_DEPTH_TEST_NEVER },
+ { "less", BGFX_STATE_DEPTH_TEST_LESS },
+ { "equal", BGFX_STATE_DEPTH_TEST_EQUAL },
+ { "lequal", BGFX_STATE_DEPTH_TEST_LEQUAL },
+ { "greater", BGFX_STATE_DEPTH_TEST_GREATER },
+ { "notequal", BGFX_STATE_DEPTH_TEST_NOTEQUAL },
+ { "gequal", BGFX_STATE_DEPTH_TEST_GEQUAL },
+ { "always", BGFX_STATE_DEPTH_TEST_ALWAYS }
+};
+
+uint64_t depth_reader::read_from_value(const Value& value)
+{
+ uint64_t write_enable = 0;
+ if (value.HasMember("writeEnable"))
+ {
+ assert(value["writeEnable"].IsBool());
+ write_enable = value["writeEnable"].GetBool() ? BGFX_STATE_DEPTH_WRITE: 0;
+ }
+
+ uint64_t function = get_enum_from_value(value, "function", BGFX_STATE_DEPTH_TEST_ALWAYS, FUNCTION_NAMES, FUNCTION_COUNT);
+
+ return write_enable | function;
+}