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98 lines
2.1 KiB
C
98 lines
2.1 KiB
C
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//===== Copyright 1996-2010, Valve Corporation, All rights reserved. ======//
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//
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// Purpose: - defines the type fltx4 - Avoid cyclic includion.
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//
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//===========================================================================//
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#ifndef FLTX4_H
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#define FLTX4_H
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#if defined(GNUC)
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#define USE_STDC_FOR_SIMD 0
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#else
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#define USE_STDC_FOR_SIMD 0
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#endif
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#if (!defined(PLATFORM_PPC) && (USE_STDC_FOR_SIMD == 0))
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#define _SSE1 1
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#endif
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// I thought about defining a class/union for the SIMD packed floats instead of using fltx4,
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// but decided against it because (a) the nature of SIMD code which includes comparisons is to blur
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// the relationship between packed floats and packed integer types and (b) not sure that the
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// compiler would handle generating good code for the intrinsics.
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#if USE_STDC_FOR_SIMD
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#error "hello"
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typedef union
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{
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float m128_f32[4];
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uint32 m128_u32[4];
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} fltx4;
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typedef fltx4 i32x4;
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typedef fltx4 u32x4;
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#ifdef _PS3
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typedef fltx4 u32x4;
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typedef fltx4 i32x4;
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#endif
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typedef fltx4 bi32x4;
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#elif ( defined( _PS3 ) )
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typedef union
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{
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// This union allows float/int access (which generally shouldn't be done in inner loops)
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vec_float4 vmxf;
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vec_int4 vmxi;
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vec_uint4 vmxui;
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__vector bool vmxbi;
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struct
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{
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float x;
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float y;
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float z;
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float w;
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};
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float m128_f32[4];
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uint32 m128_u32[4];
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int32 m128_i32[4];
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} fltx4_union;
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typedef vec_float4 fltx4;
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typedef vec_uint4 u32x4;
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typedef vec_int4 i32x4;
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typedef __vector bool bi32x4;
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#define DIFFERENT_NATIVE_VECTOR_TYPES // true if the compiler has different types for float4, uint4, int4, etc
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#elif ( defined( _X360 ) )
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typedef union
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{
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// This union allows float/int access (which generally shouldn't be done in inner loops)
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__vector4 vmx;
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float m128_f32[4];
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uint32 m128_u32[4];
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} fltx4_union;
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typedef __vector4 fltx4;
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typedef __vector4 i32x4; // a VMX register; just a way of making it explicit that we're doing integer ops.
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typedef __vector4 u32x4; // a VMX register; just a way of making it explicit that we're doing unsigned integer ops.
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typedef fltx4 bi32x4;
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#else
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typedef __m128 fltx4;
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typedef __m128 i32x4;
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typedef __m128 u32x4;
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typedef fltx4 bi32x4;
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#endif
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#endif
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