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-rw-r--r--src/osd/modules/render/bgfx/parameter.cpp56
1 files changed, 56 insertions, 0 deletions
diff --git a/src/osd/modules/render/bgfx/parameter.cpp b/src/osd/modules/render/bgfx/parameter.cpp
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index 00000000000..004d5fd17f8
--- /dev/null
+++ b/src/osd/modules/render/bgfx/parameter.cpp
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+// license:BSD-3-Clause
+// copyright-holders:Ryan Holtz
+//============================================================
+//
+// parameter.cpp - BGFX shader parameter
+//
+// A value that represents some form of parametric
+// operation, which can be fed to the input of a BGFX
+// shader uniform.
+//
+//============================================================
+
+#include "emu.h"
+
+// NB: NOT FINISHED!
+
+#include "parameter.h"
+
+bgfx_parameter::bgfx_parameter(std::string name, parameter_type type, int period)
+ : m_name(name)
+ , m_type(type)
+ , m_period(period)
+ , m_frame(0)
+{
+}
+
+bgfx_parameter::~bgfx_parameter()
+{
+}
+
+void bgfx_parameter::frame()
+{
+ switch(m_type)
+ {
+ case PARAM_FRAME_MASK:
+ m_frame++;
+ if (m_frame == m_period)
+ {
+ m_frame = 0;
+ }
+ break;
+ default:
+ break;
+ }
+}
+
+bool bgfx_parameter::active()
+{
+ switch (m_type)
+ {
+ case PARAM_FRAME_MASK:
+ return (m_frame % m_period == 0);
+ default:
+ return false;
+ }
+}