1.2.0.beta.11.2.0.beta.1

1 files changed, 41 insertions, 0 deletions

diff --git a/demo/d3d12/NvCoDxFormatUtil.h b/demo/d3d12/NvCoDxFormatUtil.h
new file mode 100644
index 0000000..e749ea8
--- /dev/null
+++ b/demo/d3d12/NvCoDxFormatUtil.h
@@ -0,0 +1,41 @@
+#ifndef NV_CO_DX_FORMAT_UTIL_H
+#define NV_CO_DX_FORMAT_UTIL_H
+
+#define NOMINMAX
+#include <dxgi.h>
+
+namespace nvidia { 
+namespace Common {
+
+struct DxFormatUtil
+{
+	enum UsageType
+	{
+		USAGE_UNKNOWN,						///< Generally used to mark an error
+		USAGE_TARGET,						///< Format should be used when written as target
+		USAGE_DEPTH_STENCIL,				///< Format should be used when written as depth stencil	
+		USAGE_SRV,							///< Format if being read as srv
+		USAGE_COUNT_OF,
+	};
+	enum UsageFlag
+	{
+		USAGE_FLAG_MULTI_SAMPLE = 0x1,
+		USAGE_FLAG_SRV = 0x2,
+	};
+
+		/// Given the usage, flags, and format will return the most suitable format. Will return DXGI_UNKNOWN if combination is not possible
+	static DXGI_FORMAT calcFormat(UsageType usage, DXGI_FORMAT format);
+		/// Calculate appropriate format for creating a buffer for usage and flags
+	static DXGI_FORMAT calcResourceFormat(UsageType usage, int usageFlags, DXGI_FORMAT format);
+		/// True if the type is 'typeless'
+	static bool isTypeless(DXGI_FORMAT format);
+
+		/// Returns number of bits used for color channel for format (for channels with multiple sizes, returns smallest ie RGB565 -> 5)
+	static int getNumColorChannelBits(DXGI_FORMAT fmt);
+
+};
+
+} // namespace Common 
+} // namespace nvidia 
+
+#endif // NV_CO_DX12_RESOURCE_H