Differential D3212 Diff 14925 ps/trunk/source/graphics/Color.cpp

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ps/trunk/source/graphics/Color.cpp

/* Copyright (C) 2019 Wildfire Games.		/* Copyright (C) 2020 Wildfire Games.
* This file is part of 0 A.D.		* This file is part of 0 A.D.
*		*
* 0 A.D. is free software: you can redistribute it and/or modify		* 0 A.D. is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by		* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or		* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.		* (at your option) any later version.
*		*
* 0 A.D. is distributed in the hope that it will be useful,		* 0 A.D. is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of		* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.		* GNU General Public License for more details.
*		*
* You should have received a copy of the GNU General Public License		* You should have received a copy of the GNU General Public License
* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.		* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
*/		*/

#include "precompiled.h"		#include "precompiled.h"

#include "graphics/Color.h"		#include "graphics/Color.h"

#include "graphics/SColor.h"		#include "graphics/SColor.h"
#include "maths/MathUtil.h"		#include "maths/MathUtil.h"
		#include "lib/sse.h"
#include "ps/CLogger.h"		#include "ps/CLogger.h"
#include "ps/CStr.h"		#include "ps/CStr.h"

#if HAVE_SSE		#if COMPILER_HAS_SSE
# include <xmmintrin.h>		#include <xmmintrin.h>
# include "lib/sysdep/arch/x86_x64/x86_x64.h"
#endif		#endif

static SColor4ub fallback_ConvertRGBColorTo4ub(const RGBColor& src)		static SColor4ub ConvertRGBColorTo4ubFallback(const RGBColor& src)
{		{
SColor4ub result;		SColor4ub result;
result.R = Clamp(static_cast<int>(src.X * 255), 0, 255);		result.R = Clamp(static_cast<int>(src.X * 255), 0, 255);
result.G = Clamp(static_cast<int>(src.Y * 255), 0, 255);		result.G = Clamp(static_cast<int>(src.Y * 255), 0, 255);
result.B = Clamp(static_cast<int>(src.Z * 255), 0, 255);		result.B = Clamp(static_cast<int>(src.Z * 255), 0, 255);
result.A = 255;		result.A = 255;
return result;		return result;
}		}

// on IA32, this is replaced by an SSE assembly version in ia32.cpp		// on IA32, this is replaced by an SSE assembly version in ia32.cpp
SColor4ub (*ConvertRGBColorTo4ub)(const RGBColor& src) = fallback_ConvertRGBColorTo4ub;		SColor4ub (*ConvertRGBColorTo4ub)(const RGBColor& src) = ConvertRGBColorTo4ubFallback;


// Assembler-optimized function for color conversion		// Assembler-optimized function for color conversion
#if HAVE_SSE		#if COMPILER_HAS_SSE
static SColor4ub sse_ConvertRGBColorTo4ub(const RGBColor& src)		static SColor4ub ConvertRGBColorTo4ubSSE(const RGBColor& src)
{		{
const __m128 zero = _mm_setzero_ps();		const __m128 zero = _mm_setzero_ps();
const __m128 _255 = _mm_set_ss(255.0f);		const __m128 _255 = _mm_set_ss(255.0f);
__m128 r = _mm_load_ss(&src.X);		__m128 r = _mm_load_ss(&src.X);
__m128 g = _mm_load_ss(&src.Y);		__m128 g = _mm_load_ss(&src.Y);
__m128 b = _mm_load_ss(&src.Z);		__m128 b = _mm_load_ss(&src.Z);

// C = min(255, 255max(C, 0)) ( == Clamp(255C, 0, 255) )		// C = min(255, 255max(C, 0)) ( == Clamp(255C, 0, 255) )
Show All 15 Lines	static SColor4ub ConvertRGBColorTo4ubSSE(const RGBColor& src)
int bi = _mm_cvtss_si32(b);		int bi = _mm_cvtss_si32(b);

return SColor4ub(ri, gi, bi, 0xFF);		return SColor4ub(ri, gi, bi, 0xFF);
}		}
#endif		#endif

void ColorActivateFastImpl()		void ColorActivateFastImpl()
{		{
#if HAVE_SSE		#if COMPILER_HAS_SSE
if (x86_x64::Cap(x86_x64::CAP_SSE))		if (HostHasSSE())
{		{
ConvertRGBColorTo4ub = sse_ConvertRGBColorTo4ub;		ConvertRGBColorTo4ub = ConvertRGBColorTo4ubSSE;
return;		return;
}		}
#endif		#endif
debug_printf("No SSE available. Slow fallback routines will be used.\n");		debug_printf("No SSE available. Slow fallback routines will be used.\n");
}		}

/**		/**
* Important: This function does not modify the value if parsing fails.		* Important: This function does not modify the value if parsing fails.
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