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VideoCommon/ShaderGenCommon: Add function for writing fmt-based strings

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Begins the conversion of the shader generators over to using fmt
formatting specifiers.

This also has a benefit over the older StringFromFormat-based API in
that all formatted data is appended to the existing buffer rather than
creating a completely separate string and then appending it to the
internal string buffer.
This commit is contained in:
Lioncash 2019-12-03 04:17:23 -05:00
parent 15fc71cfcf
commit 8af6bfb8b0
1 changed files with 12 additions and 0 deletions
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12
Source/Core/VideoCommon/ShaderGenCommon.h
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@ -6,11 +6,14 @@
#include <cstdarg>
#include <cstring>
#include <iterator>
#include <map>
#include <string>
#include <type_traits>
#include <vector>
#include <fmt/format.h>
#include "Common/CommonTypes.h"
#include "Common/StringUtil.h"
#include "VideoCommon/VideoCommon.h"
@ -101,6 +104,8 @@ class ShaderCode : public ShaderGeneratorInterface
public:
ShaderCode() { m_buffer.reserve(16384); }
const std::string& GetBuffer() const { return m_buffer; }
// Deprecated: Writes format strings using traditional printf format strings.
void Write(const char* fmt, ...)
#ifdef __GNUC__
__attribute__((format(printf, 2, 3)))
@ -112,6 +117,13 @@ public:
va_end(arglist);
}
// Writes format strings using fmtlib format strings.
template <typename... Args>
void WriteFmt(std::string_view format, Args&&... args)
{
fmt::format_to(std::back_inserter(m_buffer), format, std::forward<Args>(args)...);
}
protected:
std::string m_buffer;
};