mirror of
https://github.com/minetest/irrlicht.git
synced 2024-09-07 05:10:19 +02:00
0c6385cb92
Usually something like __IRR_SOME_GUARD_INCLUDED__ replaced by IRR_SOME_GUARD_INCLUDED. Removing underscores at the end wasn't necessary, but more symmetric (probably the reason they got added there as well). While this touches every header it shouldn't affect users (I hope). Also a few whitespace changes to unify whitespace usage a bit. And a bunch of spelling fixes in comments. git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@6252 dfc29bdd-3216-0410-991c-e03cc46cb475
1244 lines
32 KiB
C++
1244 lines
32 KiB
C++
// Copyright (C) 2002-2012 Nikolaus Gebhardt / Thomas Alten
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// This file is part of the "Irrlicht Engine".
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// For conditions of distribution and use, see copyright notice in irrlicht.h
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/*
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History:
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- changed behavior for log2 textures ( replaced multiplies by shift )
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*/
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#ifndef S_VIDEO_2_SOFTWARE_HELPER_H_INCLUDED
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#define S_VIDEO_2_SOFTWARE_HELPER_H_INCLUDED
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#include "SoftwareDriver2_compile_config.h"
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#include "irrMath.h"
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#include "irrMathFastCompat.h"
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#include "CSoftwareTexture2.h"
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#include "SMaterial.h"
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namespace irr
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{
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// supporting different packed pixel needs many defines...
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#if defined(SOFTWARE_DRIVER_2_32BIT)
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typedef u32 tVideoSample;
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typedef u32 tStencilSample;
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#define MASK_A 0xFF000000
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#define MASK_R 0x00FF0000
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#define MASK_G 0x0000FF00
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#define MASK_B 0x000000FF
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#define SHIFT_A (unsigned)24
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#define SHIFT_R (unsigned)16
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#define SHIFT_G (unsigned)8
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#define SHIFT_B (unsigned)0
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#define COLOR_MAX 0xFF
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#define COLOR_MAX_LOG2 8
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#define COLOR_BRIGHT_WHITE 0xFFFFFFFF
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#define SOFTWARE_DRIVER_2_TEXTURE_GRANULARITY (unsigned)2
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#define SOFTWARE_DRIVER_2_RENDERTARGET_GRANULARITY (unsigned)2
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#else
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typedef u16 tVideoSample;
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typedef u8 tStencilSample;
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#define MASK_A 0x8000
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#define MASK_R 0x7C00
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#define MASK_G 0x03E0
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#define MASK_B 0x001F
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#define SHIFT_A (unsigned)15
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#define SHIFT_R (unsigned)10
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#define SHIFT_G (unsigned)5
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#define SHIFT_B (unsigned)0
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#define COLOR_MAX 0x1F
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#define COLOR_MAX_LOG2 5
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#define COLOR_BRIGHT_WHITE 0xFFFF
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#define SOFTWARE_DRIVER_2_TEXTURE_GRANULARITY (unsigned)1
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#define SOFTWARE_DRIVER_2_RENDERTARGET_GRANULARITY (unsigned)1
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#endif
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// ----------------------- Generic ----------------------------------
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//! align_next - align to next upper 2^n
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#define align_next(num,to) (((num) + (to-1)) & (~(to-1)))
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//! a more useful memset for pixel. dest must be aligned at least to 4 byte
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// (standard memset only works with 8-bit values)
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inline void memset32(void * dest, const u32 value, size_t bytesize)
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{
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u32 * d = (u32*) dest;
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size_t i;
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// loops unrolled to reduce the number of increments by factor ~8.
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i = bytesize >> (2 + 3);
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while (i)
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{
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d[0] = value;
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d[1] = value;
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d[2] = value;
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d[3] = value;
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d[4] = value;
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d[5] = value;
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d[6] = value;
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d[7] = value;
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d += 8;
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i -= 1;
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}
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i = (bytesize >> 2 ) & 7;
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while (i)
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{
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d[0] = value;
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d += 1;
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i -= 1;
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}
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}
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//! a more useful memset for pixel. dest must be aligned at least to 2 byte
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// (standard memset only works with 8-bit values)
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inline void memset16(void * dest, const u16 value, size_t bytesize)
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{
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u16 * d = (u16*) dest;
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size_t i;
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// loops unrolled to reduce the number of increments by factor ~8.
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i = bytesize >> (1 + 3);
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while (i)
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{
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d[0] = value;
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d[1] = value;
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d[2] = value;
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d[3] = value;
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d[4] = value;
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d[5] = value;
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d[6] = value;
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d[7] = value;
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d += 8;
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--i;
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}
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i = (bytesize >> 1 ) & 7;
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while (i)
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{
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d[0] = value;
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++d;
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--i;
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}
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}
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//! memset interleaved
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inline void memset32_interlaced(void* dest, const u32 value, size_t pitch,u32 height,const interlaced_control Interlaced)
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{
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if (Interlaced.bypass) return memset32(dest, value, pitch * height);
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u8* dst = (u8*)dest;
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interlace_scanline_data line;
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for (line.y = 0; line.y < height; line.y += SOFTWARE_DRIVER_2_STEP_Y)
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{
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interlace_scanline_enabled memset32(dst, value, pitch);
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dst += pitch;
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}
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}
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// byte-align structures
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#include "irrpack.h"
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//IEEE Standard for Floating - Point Arithmetic(IEEE 754)
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typedef union {
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float f;
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unsigned int u;
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struct { unsigned int frac:23; unsigned exp:8; unsigned int sign:1; } fields;
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struct { unsigned int frac_exp:31; } abs;
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} PACK_STRUCT ieee754;
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// Default alignment
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#include "irrunpack.h"
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// 0.5f as integer
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#define ieee754_zero_dot_5 0x3f000000
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#define ieee754_one 0x3f800000
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#define ieee754_two 0x40000000
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#if 0
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// integer log2 of a float ieee 754. [not used anymore]
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static inline s32 s32_log2_f32( f32 f)
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{
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//u32 x = IR ( f ); return ((x & 0x7F800000) >> 23) - 127;
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ieee754 _log2;
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_log2.f = f;
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return _log2.fields.exp ? _log2.fields.exp - 127 : 10000000; /*denormal very high number*/
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}
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#endif
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// integer log2 of an integer. returning 0 as denormal
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static inline s32 s32_log2_s32(u32 in)
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{
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s32 ret = 0;
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while (in > 1)
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{
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in >>= 1;
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ret++;
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}
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return ret;
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//return s32_log2_f32( (f32) x);
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//ieee754 _log2;_log2.f = (f32) in; return _log2.fields.exp - 127;
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}
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#if 0
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static inline s32 s32_abs(s32 x)
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{
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s32 b = x >> 31;
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return (x ^ b ) - b;
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}
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//! conditional set based on mask and arithmetic shift
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REALINLINE u32 if_mask_a_else_b ( const u32 mask, const u32 a, const u32 b )
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{
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return ( mask & ( a ^ b ) ) ^ b;
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}
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#endif
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// ------------------ Video---------------------------------------
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/*!
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Pixel = dest * ( 1 - alpha ) + source * alpha
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alpha [0;256]
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*/
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REALINLINE u32 PixelBlend32 ( const u32 c2, const u32 c1, const u32 alpha )
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{
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u32 srcRB = c1 & 0x00FF00FF;
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u32 srcXG = c1 & 0x0000FF00;
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u32 dstRB = c2 & 0x00FF00FF;
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u32 dstXG = c2 & 0x0000FF00;
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u32 rb = srcRB - dstRB;
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u32 xg = srcXG - dstXG;
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rb *= alpha;
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xg *= alpha;
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rb >>= 8;
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xg >>= 8;
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rb += dstRB;
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xg += dstXG;
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rb &= 0x00FF00FF;
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xg &= 0x0000FF00;
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return rb | xg;
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}
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/*!
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Pixel = dest * ( 1 - alpha ) + source * alpha
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alpha [0;32]
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*/
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inline u16 PixelBlend16 ( const u16 c2, const u16 c1, const u16 alpha )
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{
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const u16 srcRB = c1 & 0x7C1F;
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const u16 srcXG = c1 & 0x03E0;
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const u16 dstRB = c2 & 0x7C1F;
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const u16 dstXG = c2 & 0x03E0;
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u32 rb = srcRB - dstRB;
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u32 xg = srcXG - dstXG;
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rb *= alpha;
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xg *= alpha;
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rb >>= 5;
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xg >>= 5;
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rb += dstRB;
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xg += dstXG;
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rb &= 0x7C1F;
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xg &= 0x03E0;
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return (u16)(rb | xg);
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}
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/*
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Pixel = c0 * (c1/31). c0 Alpha retain
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*/
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inline u16 PixelMul16 ( const u16 c0, const u16 c1)
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{
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return (u16)((( ( (c0 & 0x7C00) * (c1 & 0x7C00) ) & 0x3E000000 ) >> 15 ) |
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(( ( (c0 & 0x03E0) * (c1 & 0x03E0) ) & 0x000F8000 ) >> 10 ) |
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(( ( (c0 & 0x001F) * (c1 & 0x001F) ) & 0x000003E0 ) >> 5 ) |
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(c0 & 0x8000));
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}
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/*
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Pixel = c0 * (c1/31).
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*/
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inline u16 PixelMul16_2 ( u16 c0, u16 c1)
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{
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return (u16)(( ( (c0 & 0x7C00) * (c1 & 0x7C00) ) & 0x3E000000 ) >> 15 |
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( ( (c0 & 0x03E0) * (c1 & 0x03E0) ) & 0x000F8000 ) >> 10 |
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( ( (c0 & 0x001F) * (c1 & 0x001F) ) & 0x000003E0 ) >> 5 |
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( c0 & c1 & 0x8000));
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}
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/*
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Pixel = c0 * (c1/255). c0 Alpha Retain
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*/
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REALINLINE u32 PixelMul32 ( const u32 c0, const u32 c1)
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{
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return (c0 & 0xFF000000) |
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(( ( (c0 & 0x00FF0000) >> 12 ) * ( (c1 & 0x00FF0000) >> 12 ) ) & 0x00FF0000 ) |
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(( ( (c0 & 0x0000FF00) * (c1 & 0x0000FF00) ) >> 16 ) & 0x0000FF00 ) |
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(( ( (c0 & 0x000000FF) * (c1 & 0x000000FF) ) >> 8 ) & 0x000000FF);
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}
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/*
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Pixel = c0 * (c1/255).
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*/
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REALINLINE u32 PixelMul32_2 ( const u32 c0, const u32 c1)
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{
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return (( ( (c0 & 0xFF000000) >> 16 ) * ( (c1 & 0xFF000000) >> 16 ) ) & 0xFF000000 ) |
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(( ( (c0 & 0x00FF0000) >> 12 ) * ( (c1 & 0x00FF0000) >> 12 ) ) & 0x00FF0000 ) |
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(( ( (c0 & 0x0000FF00) * (c1 & 0x0000FF00) ) >> 16 ) & 0x0000FF00 ) |
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(( ( (c0 & 0x000000FF) * (c1 & 0x000000FF) ) >> 8 ) & 0x000000FF);
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}
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/*
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Pixel = clamp ( c0 + c1, 0, 255 )
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*/
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REALINLINE u32 PixelAdd32 ( const u32 c2, const u32 c1)
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{
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u32 sum = ( c2 & 0x00FFFFFF ) + ( c1 & 0x00FFFFFF );
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u32 low_bits = ( c2 ^ c1 ) & 0x00010101;
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s32 carries = ( sum - low_bits ) & 0x01010100;
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u32 modulo = sum - carries;
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u32 clamp = carries - ( carries >> 8 );
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return modulo | clamp;
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}
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#if 0
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// 1 - Bit Alpha Blending
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inline u16 PixelBlend16 ( const u16 destination, const u16 source )
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{
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if((source & 0x8000) == 0x8000)
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return source; // The source is visible, so use it.
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else
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return destination; // The source is transparent, so use the destination.
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}
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// 1 - Bit Alpha Blending 16Bit SIMD
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inline u32 PixelBlend16_simd ( const u32 destination, const u32 source )
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{
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switch(source & 0x80008000)
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{
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case 0x80008000: // Both source pixels are visible
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return source;
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case 0x80000000: // Only the first source pixel is visible
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return (source & 0xFFFF0000) | (destination & 0x0000FFFF);
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case 0x00008000: // Only the second source pixel is visible.
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return (destination & 0xFFFF0000) | (source & 0x0000FFFF);
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default: // Neither source pixel is visible.
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return destination;
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}
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}
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#else
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// 1 - Bit Alpha Blending
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inline u16 PixelBlend16 ( const u16 c2, const u16 c1 )
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{
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u16 mask = ((c1 & 0x8000) >> 15 ) + 0x7fff;
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return (c2 & mask ) | ( c1 & ~mask );
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}
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// 1 - Bit Alpha Blending 16Bit SIMD
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inline u32 PixelBlend16_simd ( const u32 c2, const u32 c1 )
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{
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u32 mask = ((c1 & 0x80008000) >> 15 ) + 0x7fff7fff;
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return (c2 & mask ) | ( c1 & ~mask );
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}
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#endif
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/*!
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Pixel = dest * ( 1 - SourceAlpha ) + source * SourceAlpha (OpenGL blending)
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*/
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inline u32 PixelBlend32 ( const u32 c2, const u32 c1 )
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{
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// alpha test
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u32 alpha = c1 & 0xFF000000;
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if ( 0 == alpha )
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return c2;
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if ( 0xFF000000 == alpha )
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{
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return c1;
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}
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alpha >>= 24;
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// add highbit alpha, if ( alpha > 127 ) alpha += 1;
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alpha += ( alpha >> 7);
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u32 srcRB = c1 & 0x00FF00FF;
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u32 srcXG = c1 & 0x0000FF00;
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u32 dstRB = c2 & 0x00FF00FF;
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u32 dstXG = c2 & 0x0000FF00;
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u32 rb = srcRB - dstRB;
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u32 xg = srcXG - dstXG;
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rb *= alpha;
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xg *= alpha;
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rb >>= 8;
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xg >>= 8;
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rb += dstRB;
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xg += dstXG;
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rb &= 0x00FF00FF;
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xg &= 0x0000FF00;
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return (c1 & 0xFF000000) | rb | xg;
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}
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// ------------------ Fix Point ----------------------------------
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#if defined(ENV64BIT)
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typedef s32 tFixPoint;
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typedef u32 tFixPointu;
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#else
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typedef s32 tFixPoint;
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typedef u32 tFixPointu;
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#endif
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// Fix Point 12 (overflow on s32)
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#if 0
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#define FIX_POINT_PRE 12
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#define FIX_POINT_FRACT_MASK 0xFFF
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#define FIX_POINT_UNSIGNED_MASK 0x7FFFF000
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#define FIX_POINT_ONE 0x1000
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#define FIX_POINT_ZERO_DOT_FIVE 0x0800
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#define FIX_POINT_F32_MUL 4096.f
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#endif
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// Fix Point 11 (overflow on s32)
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#if 0
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#define FIX_POINT_PRE 11
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#define FIX_POINT_FRACT_MASK 0x7FF
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#define FIX_POINT_UNSIGNED_MASK 0xFFFFF800
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#define FIX_POINT_ONE 0x800
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#define FIX_POINT_ZERO_DOT_FIVE 0x400
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#define FIX_POINT_F32_MUL 2048.f
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#endif
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// Fix Point 10
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#if 1
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#define FIX_POINT_PRE 10
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#define FIX_POINT_FRACT_MASK 0x000003FF
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#define FIX_POINT_UNSIGNED_MASK 0x7FFFFE00
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#define FIX_POINT_ONE 0x00000400
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#define FIX_POINT_ZERO_DOT_FIVE 0x00000200
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#define FIX_POINT_F32_MUL 1024.f
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#endif
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// Fix Point 9
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#if 0
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#define FIX_POINT_PRE 9
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#define FIX_POINT_FRACT_MASK 0x1FF
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#define FIX_POINT_UNSIGNED_MASK 0x7FFFFE00
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#define FIX_POINT_ONE 0x200
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#define FIX_POINT_ZERO_DOT_FIVE 0x100
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#define FIX_POINT_F32_MUL 512.f
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#endif
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// Fix Point 7
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#if 0
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#define FIX_POINT_PRE 7
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#define FIX_POINT_FRACT_MASK 0x7F
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#define FIX_POINT_UNSIGNED_MASK 0x7FFFFF80
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#define FIX_POINT_ONE 0x80
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#define FIX_POINT_ZERO_DOT_FIVE 0x40
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#define FIX_POINT_F32_MUL 128.f
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#endif
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#define FIXPOINT_COLOR_MAX ( COLOR_MAX << FIX_POINT_PRE )
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#if FIX_POINT_PRE == 10 && COLOR_MAX == 255
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#define FIX_POINT_HALF_COLOR 0x1FE00
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#define FIX_POINT_COLOR_ERROR 4
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#elif FIX_POINT_PRE == 12 && COLOR_MAX == 255
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#define FIX_POINT_HALF_COLOR 0x7F800
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#define FIX_POINT_COLOR_ERROR 16
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#elif FIX_POINT_PRE == 10 && COLOR_MAX == 31
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#define FIX_POINT_HALF_COLOR 0x3E00
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#define FIX_POINT_COLOR_ERROR 32
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#else
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#define FIX_POINT_HALF_COLOR ( (tFixPoint) ( ((f32) COLOR_MAX / 2.f * FIX_POINT_F32_MUL ) ) )
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#define FIX_POINT_COLOR_ERROR (1<<(FIX_POINT_PRE-COLOR_MAX_LOG2))
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#endif
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/*
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convert signed integer to fixpoint
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*/
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inline tFixPoint s32_to_fixPoint (const s32 x)
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{
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return x << FIX_POINT_PRE;
|
|
}
|
|
|
|
#if 0
|
|
inline tFixPointu u32_to_fixPoint (const u32 x)
|
|
{
|
|
return x << FIX_POINT_PRE;
|
|
}
|
|
#endif
|
|
|
|
inline u32 fixPointu_to_u32 (const tFixPointu x)
|
|
{
|
|
return (u32)(x >> FIX_POINT_PRE);
|
|
}
|
|
|
|
|
|
// 1/x * FIX_POINT
|
|
#define fix_inverse32(x) (FIX_POINT_F32_MUL / (x))
|
|
#define fix_inverse32_color(x) ((FIX_POINT_F32_MUL*COLOR_MAX) / (x))
|
|
|
|
|
|
/*
|
|
convert float to fixpoint
|
|
fast convert (fistp on x86) HAS to be used..
|
|
hints: compileflag /QIfist for msvc7. msvc 8.0 has smth different
|
|
others should use their favourite assembler..
|
|
*/
|
|
#if 0
|
|
static inline int f_round2(f32 f)
|
|
{
|
|
f += (3<<22);
|
|
return IR(f) - 0x4b400000;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
convert f32 to Fix Point.
|
|
multiply is needed anyway, so scale mulby
|
|
*/
|
|
/*
|
|
REALINLINE tFixPoint tofix0 (const f32 x, const f32 mulby = FIX_POINT_F32_MUL )
|
|
{
|
|
return (tFixPoint) (x * mulby);
|
|
}
|
|
*/
|
|
#define tofix(x,y) (tFixPoint)(x * y)
|
|
|
|
|
|
/*
|
|
Fix Point , Fix Point Multiply
|
|
*/
|
|
/*
|
|
REALINLINE tFixPointu imulFixu(const tFixPointu x, const tFixPointu y)
|
|
{
|
|
return (x * y) >> (tFixPointu) FIX_POINT_PRE;
|
|
}
|
|
*/
|
|
#define imulFixu(x,y) (((x) * (y)) >> (tFixPointu) FIX_POINT_PRE)
|
|
|
|
|
|
/*
|
|
Fix Point , Fix Point Multiply
|
|
*/
|
|
REALINLINE tFixPoint imulFix(const tFixPoint x, const tFixPoint y)
|
|
{
|
|
return (x * y) >> FIX_POINT_PRE;
|
|
}
|
|
|
|
#define imulFix_simple(x,y) ((x*y)>>FIX_POINT_PRE)
|
|
|
|
#if 0
|
|
/*
|
|
Fix Point , Fix Point Multiply x * y * 2
|
|
*/
|
|
REALINLINE tFixPoint imulFix2(const tFixPoint x, const tFixPoint y)
|
|
{
|
|
return ( x * y) >> ( FIX_POINT_PRE -1 );
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
Multiply x * y * 1 FIXPOINT_COLOR_MAX
|
|
*/
|
|
REALINLINE tFixPoint imulFix_tex1(const tFixPoint x, const tFixPoint y)
|
|
{
|
|
#if SOFTWARE_DRIVER_2_TEXTURE_COLOR_FORMAT == ECF_A8R8G8B8
|
|
return (((tFixPointu)x >> 2)*(((tFixPointu)y + FIX_POINT_ONE) >> 2)) >> (tFixPointu) (FIX_POINT_PRE + 4);
|
|
#else
|
|
return (x * (y+ FIX_POINT_ONE)) >> (FIX_POINT_PRE + 5);
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
Multiply x * y * 2
|
|
*/
|
|
REALINLINE tFixPoint imulFix_tex2(const tFixPoint x, const tFixPoint y)
|
|
{
|
|
return ( ( (tFixPointu) x >> 2 ) * ( (tFixPointu) y >> 2 ) ) >> (tFixPointu) ( FIX_POINT_PRE + 3 );
|
|
}
|
|
|
|
/*
|
|
Multiply x * y * 4 clamp
|
|
*/
|
|
|
|
REALINLINE tFixPoint imulFix_tex4(const tFixPoint x, const tFixPoint y)
|
|
{
|
|
#if SOFTWARE_DRIVER_2_TEXTURE_COLOR_FORMAT == ECF_A8R8G8B8
|
|
tFixPoint a = (((tFixPointu)x >> 2)*(((tFixPointu)y + FIX_POINT_ONE) >> 2)) >> (tFixPointu)(FIX_POINT_PRE + 2);
|
|
#else
|
|
tFixPoint a = (x * (y + FIX_POINT_ONE)) >> (FIX_POINT_PRE + 3);
|
|
#endif
|
|
tFixPoint mask = (a - FIXPOINT_COLOR_MAX) >> 31;
|
|
return (a & mask) | (FIXPOINT_COLOR_MAX & ~mask);
|
|
}
|
|
|
|
|
|
/*!
|
|
clamp FixPoint to maxcolor in FixPoint, min(a,COLOR_MAX)
|
|
*/
|
|
REALINLINE tFixPoint clampfix_maxcolor ( const tFixPoint a)
|
|
{
|
|
tFixPoint c = (a - FIXPOINT_COLOR_MAX) >> 31;
|
|
return (a & c) | ( FIXPOINT_COLOR_MAX & ~c);
|
|
}
|
|
|
|
|
|
/*!
|
|
clamp FixPoint to 0 in FixPoint, max(a,0)
|
|
*/
|
|
REALINLINE tFixPoint clampfix_mincolor ( const tFixPoint a)
|
|
{
|
|
return a - ( a & ( a >> 31 ) );
|
|
}
|
|
|
|
REALINLINE tFixPoint saturateFix ( const tFixPoint a)
|
|
{
|
|
return clampfix_mincolor ( clampfix_maxcolor ( a ) );
|
|
}
|
|
|
|
|
|
#if 0
|
|
// rount fixpoint to int
|
|
inline s32 roundFix ( const tFixPoint x )
|
|
{
|
|
return (s32)(( x + FIX_POINT_ZERO_DOT_FIVE ) >> FIX_POINT_PRE);
|
|
}
|
|
#endif
|
|
|
|
// x in [0;1[
|
|
#if 0
|
|
inline s32 f32_to_23Bits(const f32 x)
|
|
{
|
|
f32 y = x + 1.f;
|
|
return IR(y) & 0x7FFFFF; // last 23 bits
|
|
}
|
|
#endif
|
|
|
|
/*!
|
|
fixpoint in [0..Fixpoint_color] to VideoSample xrgb
|
|
*/
|
|
REALINLINE tVideoSample fix_to_sample ( const tFixPoint r, const tFixPoint g, const tFixPoint b )
|
|
{
|
|
return ( FIXPOINT_COLOR_MAX & FIXPOINT_COLOR_MAX) << ( SHIFT_A - FIX_POINT_PRE ) |
|
|
( r & FIXPOINT_COLOR_MAX) << ( SHIFT_R - FIX_POINT_PRE ) |
|
|
( g & FIXPOINT_COLOR_MAX) >> ( FIX_POINT_PRE - SHIFT_G ) |
|
|
( b & FIXPOINT_COLOR_MAX) >> ( FIX_POINT_PRE - SHIFT_B );
|
|
}
|
|
|
|
|
|
/*!
|
|
fixpoint to VideoSample argb
|
|
a in [0;1]
|
|
rgb in [0;255] colormax
|
|
*/
|
|
REALINLINE tVideoSample fix4_to_sample ( const tFixPoint a, const tFixPoint r, const tFixPoint g, const tFixPoint b )
|
|
{
|
|
return ( a & (FIX_POINT_FRACT_MASK - 1 )) << ( SHIFT_A - 1 ) |
|
|
( r & FIXPOINT_COLOR_MAX) << ( SHIFT_R - FIX_POINT_PRE ) |
|
|
( g & FIXPOINT_COLOR_MAX) >> ( FIX_POINT_PRE - SHIFT_G ) |
|
|
( b & FIXPOINT_COLOR_MAX) >> ( FIX_POINT_PRE - SHIFT_B );
|
|
}
|
|
|
|
/*!
|
|
return fixpoint from VideoSample granularity FIXPOINT_COLOR_MAX
|
|
*/
|
|
inline void color_to_fix ( tFixPoint &r, tFixPoint &g, tFixPoint &b, const tVideoSample t00 )
|
|
{
|
|
(tFixPointu&) r = (t00 & MASK_R) >> ( SHIFT_R - FIX_POINT_PRE );
|
|
(tFixPointu&) g = (t00 & MASK_G) << ( FIX_POINT_PRE - SHIFT_G );
|
|
(tFixPointu&) b = (t00 & MASK_B) << ( FIX_POINT_PRE - SHIFT_B );
|
|
}
|
|
|
|
/*!
|
|
return fixpoint from VideoSample granularity FIXPOINT_COLOR_MAX
|
|
*/
|
|
inline void color_to_fix ( tFixPoint &a, tFixPoint &r, tFixPoint &g, tFixPoint &b, const tVideoSample t00 )
|
|
{
|
|
(tFixPointu&) a = (t00 & MASK_A) >> ( SHIFT_A - FIX_POINT_PRE );
|
|
(tFixPointu&) r = (t00 & MASK_R) >> ( SHIFT_R - FIX_POINT_PRE );
|
|
(tFixPointu&) g = (t00 & MASK_G) << ( FIX_POINT_PRE - SHIFT_G );
|
|
(tFixPointu&) b = (t00 & MASK_B) << ( FIX_POINT_PRE - SHIFT_B );
|
|
}
|
|
|
|
/*!
|
|
return fixpoint from VideoSample granularity 0..FIX_POINT_ONE
|
|
*/
|
|
inline void color_to_fix1 ( tFixPoint &r, tFixPoint &g, tFixPoint &b, const tVideoSample t00 )
|
|
{
|
|
(tFixPointu&) r = (t00 & MASK_R) >> ( SHIFT_R + COLOR_MAX_LOG2 - FIX_POINT_PRE );
|
|
(tFixPointu&) g = (t00 & MASK_G) >> ( SHIFT_G + COLOR_MAX_LOG2 - FIX_POINT_PRE );
|
|
(tFixPointu&) b = (t00 & MASK_B) << ( FIX_POINT_PRE - COLOR_MAX_LOG2 );
|
|
|
|
//0..255 -> 0..256 | c += c >= 0.5 ? 1 : 0
|
|
r += (r & FIX_POINT_ZERO_DOT_FIVE) ? FIX_POINT_COLOR_ERROR : 0;
|
|
g += (g & FIX_POINT_ZERO_DOT_FIVE) ? FIX_POINT_COLOR_ERROR : 0;
|
|
b += (b & FIX_POINT_ZERO_DOT_FIVE) ? FIX_POINT_COLOR_ERROR : 0;
|
|
}
|
|
|
|
/*!
|
|
return fixpoint from VideoSample granularity 0..FIX_POINT_ONE
|
|
*/
|
|
inline void color_to_fix1 ( tFixPoint &a, tFixPoint &r, tFixPoint &g, tFixPoint &b, const tVideoSample t00 )
|
|
{
|
|
(tFixPointu&) a = (t00 & MASK_A) >> ( SHIFT_A + COLOR_MAX_LOG2 - FIX_POINT_PRE );
|
|
(tFixPointu&) r = (t00 & MASK_R) >> ( SHIFT_R + COLOR_MAX_LOG2 - FIX_POINT_PRE );
|
|
(tFixPointu&) g = (t00 & MASK_G) >> ( SHIFT_G + COLOR_MAX_LOG2 - FIX_POINT_PRE );
|
|
(tFixPointu&) b = (t00 & MASK_B) << ( FIX_POINT_PRE - COLOR_MAX_LOG2 );
|
|
|
|
//0..255 -> 0..256 | c += c >= 0.5 ? 1 : 0
|
|
a += (a & FIX_POINT_ZERO_DOT_FIVE) ? FIX_POINT_COLOR_ERROR : 0;
|
|
r += (r & FIX_POINT_ZERO_DOT_FIVE) ? FIX_POINT_COLOR_ERROR : 0;
|
|
g += (g & FIX_POINT_ZERO_DOT_FIVE) ? FIX_POINT_COLOR_ERROR : 0;
|
|
b += (b & FIX_POINT_ZERO_DOT_FIVE) ? FIX_POINT_COLOR_ERROR : 0;
|
|
|
|
}
|
|
|
|
/*!
|
|
return fixpoint from VideoSample granularity FIXPOINT_COLOR_MAX
|
|
*/
|
|
inline void color_to_fix(tFixPoint c[4], const tVideoSample t00)
|
|
{
|
|
c[0] = (t00 & MASK_A) >> (SHIFT_A - FIX_POINT_PRE);
|
|
c[1] = (t00 & MASK_R) >> (SHIFT_R - FIX_POINT_PRE);
|
|
c[2] = (t00 & MASK_G) << (FIX_POINT_PRE - SHIFT_G);
|
|
c[3] = (t00 & MASK_B) << (FIX_POINT_PRE - SHIFT_B);
|
|
}
|
|
|
|
/*!
|
|
return fixpoint from VideoSample granularity 0..FIX_POINT_ONE
|
|
*/
|
|
inline void color_to_fix1(tFixPoint c[4], const tVideoSample t00)
|
|
{
|
|
c[0] = (t00 & MASK_A) >> (SHIFT_A + COLOR_MAX_LOG2 - FIX_POINT_PRE);
|
|
c[1] = (t00 & MASK_R) >> (SHIFT_R + COLOR_MAX_LOG2 - FIX_POINT_PRE);
|
|
c[2] = (t00 & MASK_G) >> (SHIFT_G + COLOR_MAX_LOG2 - FIX_POINT_PRE);
|
|
c[3] = (t00 & MASK_B) << (FIX_POINT_PRE - COLOR_MAX_LOG2);
|
|
|
|
//0..255 -> 0..256 | c += c >= 0.5 ? 1 : 0
|
|
c[0] += (c[0] & FIX_POINT_ZERO_DOT_FIVE) ? FIX_POINT_COLOR_ERROR : 0;
|
|
c[1] += (c[1] & FIX_POINT_ZERO_DOT_FIVE) ? FIX_POINT_COLOR_ERROR : 0;
|
|
c[2] += (c[2] & FIX_POINT_ZERO_DOT_FIVE) ? FIX_POINT_COLOR_ERROR : 0;
|
|
c[3] += (c[3] & FIX_POINT_ZERO_DOT_FIVE) ? FIX_POINT_COLOR_ERROR : 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
//! ----- FP24 1.23 fix point z-buffer
|
|
|
|
#if 1
|
|
typedef f32 fp24;
|
|
#else
|
|
struct fp24
|
|
{
|
|
u32 v;
|
|
|
|
fp24() {}
|
|
|
|
fp24 ( const f32 f )
|
|
{
|
|
f32 y = f + 1.f;
|
|
v = ((u32&)y) & 0x7FFFFF; // last 23 bits
|
|
}
|
|
|
|
void operator=(const f32 f )
|
|
{
|
|
f32 y = f + 1.f;
|
|
v = ((u32&)y) & 0x7FFFFF; // last 23 bits
|
|
}
|
|
|
|
void operator+=(const fp24 &other )
|
|
{
|
|
v += other.v;
|
|
}
|
|
|
|
operator f32 () const
|
|
{
|
|
f32 r = FR ( v );
|
|
return r + 1.f;
|
|
}
|
|
|
|
};
|
|
#endif
|
|
|
|
|
|
// ------------------------ Internal Texture -----------------------------
|
|
|
|
struct sInternalTexture
|
|
{
|
|
//power-of-two
|
|
void* data; //tVideoSample* Texture->lock(miplevel)
|
|
size_t textureXMask;
|
|
size_t textureYMask;
|
|
|
|
size_t pitchlog2;
|
|
|
|
video::CSoftwareTexture2 *Texture;
|
|
s32 lodFactor; // magnify/minify
|
|
};
|
|
|
|
|
|
|
|
// get video sample plain
|
|
static inline tVideoSample getTexel_plain ( const sInternalTexture* t, const tFixPointu tx, const tFixPointu ty )
|
|
{
|
|
size_t ofs;
|
|
|
|
ofs = ( ( ty & t->textureYMask ) >> FIX_POINT_PRE ) << t->pitchlog2;
|
|
ofs |= ( tx & t->textureXMask ) >> ( FIX_POINT_PRE - SOFTWARE_DRIVER_2_TEXTURE_GRANULARITY );
|
|
|
|
// texel
|
|
return *((tVideoSample*)( (u8*) t->data + ofs ));
|
|
}
|
|
|
|
// get video sample to fix
|
|
inline void getTexel_fix ( tFixPoint &r, tFixPoint &g, tFixPoint &b,
|
|
const sInternalTexture* t, const tFixPointu tx, const tFixPointu ty
|
|
)
|
|
{
|
|
size_t ofs;
|
|
|
|
ofs = ( ((ty + FIX_POINT_ZERO_DOT_FIVE) & t->textureYMask ) >> FIX_POINT_PRE ) << t->pitchlog2;
|
|
ofs |= ((tx + FIX_POINT_ZERO_DOT_FIVE) & t->textureXMask ) >> ( FIX_POINT_PRE - SOFTWARE_DRIVER_2_TEXTURE_GRANULARITY );
|
|
|
|
// texel
|
|
tVideoSample t00;
|
|
t00 = *((tVideoSample*)( (u8*) t->data + ofs ));
|
|
|
|
r = (t00 & MASK_R) >> ( SHIFT_R - FIX_POINT_PRE);
|
|
g = (t00 & MASK_G) << ( FIX_POINT_PRE - SHIFT_G );
|
|
b = (t00 & MASK_B) << ( FIX_POINT_PRE - SHIFT_B );
|
|
|
|
}
|
|
|
|
// get video sample to fixpoint colormax
|
|
inline void getTexel_fix(tFixPoint &a, tFixPoint &r, tFixPoint &g, tFixPoint &b,
|
|
const sInternalTexture* t, const tFixPointu tx, const tFixPointu ty
|
|
)
|
|
{
|
|
size_t ofs;
|
|
|
|
ofs = (((ty+ FIX_POINT_ZERO_DOT_FIVE) & t->textureYMask) >> FIX_POINT_PRE) << t->pitchlog2;
|
|
ofs |= ((tx+ FIX_POINT_ZERO_DOT_FIVE) & t->textureXMask) >> (FIX_POINT_PRE - SOFTWARE_DRIVER_2_TEXTURE_GRANULARITY);
|
|
|
|
// texel
|
|
tVideoSample t00;
|
|
t00 = *((tVideoSample*)((u8*)t->data + ofs));
|
|
|
|
a = (t00 & MASK_A) >> (SHIFT_A - FIX_POINT_PRE);
|
|
r = (t00 & MASK_R) >> (SHIFT_R - FIX_POINT_PRE);
|
|
g = (t00 & MASK_G) << (FIX_POINT_PRE - SHIFT_G);
|
|
b = (t00 & MASK_B) << (FIX_POINT_PRE - SHIFT_B);
|
|
|
|
}
|
|
|
|
#if 0
|
|
// get video sample to fixpoint
|
|
static REALINLINE void getTexel_fix ( tFixPoint &a,
|
|
const sInternalTexture * t, const tFixPointu tx, const tFixPointu ty)
|
|
{
|
|
size_t ofs;
|
|
|
|
ofs = ( ((ty + FIX_POINT_ZERO_DOT_FIVE) & t->textureYMask ) >> FIX_POINT_PRE ) << t->pitchlog2;
|
|
ofs |= ((tx + FIX_POINT_ZERO_DOT_FIVE) & t->textureXMask ) >> ( FIX_POINT_PRE - SOFTWARE_DRIVER_2_TEXTURE_GRANULARITY );
|
|
|
|
// texel
|
|
tVideoSample t00;
|
|
t00 = *((tVideoSample*)( (u8*) t->data + ofs ));
|
|
|
|
a = (t00 & MASK_A) >> ( SHIFT_A - FIX_POINT_PRE);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
load a sample from internal texture at position tx,ty to fixpoint
|
|
*/
|
|
#if defined(SOFTWARE_DRIVER_2_BILINEAR)
|
|
|
|
#if 0
|
|
// texture2D in fixpoint color range bilinear
|
|
static REALINLINE void getSample_texture(tFixPoint &r, tFixPoint &g, tFixPoint &b,
|
|
const sInternalTexture* burning_restrict t, const tFixPointu tx, const tFixPointu ty
|
|
)
|
|
{
|
|
#if 0
|
|
if (t->lodFactor > 0)
|
|
{
|
|
size_t ofs;
|
|
|
|
ofs = (((ty + FIX_POINT_ZERO_DOT_FIVE) & t->textureYMask) >> FIX_POINT_PRE) << t->pitchlog2;
|
|
ofs += ((tx + FIX_POINT_ZERO_DOT_FIVE) & t->textureXMask) >> (FIX_POINT_PRE - SOFTWARE_DRIVER_2_TEXTURE_GRANULARITY);
|
|
|
|
// texel
|
|
tVideoSample t00;
|
|
t00 = *((tVideoSample*)((u8*)t->data + ofs));
|
|
|
|
r = (t00 & MASK_R) >> (SHIFT_R - FIX_POINT_PRE);
|
|
g = (t00 & MASK_G) << (FIX_POINT_PRE - SHIFT_G);
|
|
b = (t00 & MASK_B) << (FIX_POINT_PRE - SHIFT_B);
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
tFixPointu r00, g00, b00;
|
|
tFixPointu r01, g01, b01;
|
|
tFixPointu r10, g10, b10;
|
|
tFixPointu r11, g11, b11;
|
|
|
|
size_t o0, o1, o2, o3;
|
|
tVideoSample t00;
|
|
|
|
//wraps positive (ignoring negative)
|
|
o0 = (((ty)& t->textureYMask) >> FIX_POINT_PRE) << t->pitchlog2;
|
|
o1 = (((ty + FIX_POINT_ONE) & t->textureYMask) >> FIX_POINT_PRE) << t->pitchlog2;
|
|
o2 = ((tx)& t->textureXMask) >> (FIX_POINT_PRE - SOFTWARE_DRIVER_2_TEXTURE_GRANULARITY);
|
|
o3 = ((tx + FIX_POINT_ONE) & t->textureXMask) >> (FIX_POINT_PRE - SOFTWARE_DRIVER_2_TEXTURE_GRANULARITY);
|
|
|
|
t00 = *((tVideoSample*)((u8*)t->data + (o0 + o2)));
|
|
r00 = (t00 & MASK_R) >> SHIFT_R;
|
|
g00 = (t00 & MASK_G) >> SHIFT_G;
|
|
b00 = (t00 & MASK_B);
|
|
|
|
t00 = *((tVideoSample*)((u8*)t->data + (o0 + o3)));
|
|
r10 = (t00 & MASK_R) >> SHIFT_R;
|
|
g10 = (t00 & MASK_G) >> SHIFT_G;
|
|
b10 = (t00 & MASK_B);
|
|
|
|
t00 = *((tVideoSample*)((u8*)t->data + (o1 + o2)));
|
|
r01 = (t00 & MASK_R) >> SHIFT_R;
|
|
g01 = (t00 & MASK_G) >> SHIFT_G;
|
|
b01 = (t00 & MASK_B);
|
|
|
|
t00 = *((tVideoSample*)((u8*)t->data + (o1 + o3)));
|
|
r11 = (t00 & MASK_R) >> SHIFT_R;
|
|
g11 = (t00 & MASK_G) >> SHIFT_G;
|
|
b11 = (t00 & MASK_B);
|
|
|
|
|
|
tFixPointu fracx = tx & FIX_POINT_FRACT_MASK;
|
|
tFixPointu fracy = ty & FIX_POINT_FRACT_MASK;
|
|
|
|
//w00 w01 w10 w11
|
|
tFixPointu w[4];
|
|
w[0] = imulFixu(FIX_POINT_ONE - fracx, FIX_POINT_ONE - fracy);
|
|
w[1] = imulFixu(FIX_POINT_ONE - fracx, fracy);
|
|
w[2] = imulFixu(fracx, FIX_POINT_ONE - fracy);
|
|
w[3] = imulFixu(fracx, fracy);
|
|
|
|
r = (r00 * w[0]) +
|
|
(r01 * w[1]) +
|
|
(r10 * w[2]) +
|
|
(r11 * w[3]);
|
|
|
|
g = (g00 * w[0]) +
|
|
(g01 * w[1]) +
|
|
(g10 * w[2]) +
|
|
(g11 * w[3]);
|
|
|
|
b = (b00 * w[0]) +
|
|
(b01 * w[1]) +
|
|
(b10 * w[2]) +
|
|
(b11 * w[3]);
|
|
|
|
}
|
|
|
|
#else
|
|
|
|
// texture2D in fixpoint color range bilinear
|
|
static REALINLINE void getSample_texture(tFixPoint &r, tFixPoint &g, tFixPoint &b,
|
|
const sInternalTexture* burning_restrict tex, const tFixPointu tx, const tFixPointu ty
|
|
)
|
|
{
|
|
#if 0
|
|
if (tex->lodFactor > 1)
|
|
{
|
|
//nearest neighbor
|
|
size_t ofs;
|
|
ofs = (((ty + FIX_POINT_ZERO_DOT_FIVE) & tex->textureYMask) >> FIX_POINT_PRE) << tex->pitchlog2;
|
|
ofs += ((tx + FIX_POINT_ZERO_DOT_FIVE) & tex->textureXMask) >> (FIX_POINT_PRE - SOFTWARE_DRIVER_2_TEXTURE_GRANULARITY);
|
|
|
|
tVideoSample t00;
|
|
t00 = *((tVideoSample*)((u8*)tex->data + ofs));
|
|
|
|
r = (t00 & MASK_R) >> (SHIFT_R - FIX_POINT_PRE);
|
|
g = (t00 & MASK_G) << (FIX_POINT_PRE - SHIFT_G);
|
|
b = (t00 & MASK_B) << (FIX_POINT_PRE - SHIFT_B);
|
|
return;
|
|
}
|
|
#endif
|
|
//w00 w01 w10 w11
|
|
tFixPointu w[4];
|
|
{
|
|
tFixPointu fracx = tx & FIX_POINT_FRACT_MASK;
|
|
tFixPointu fracy = ty & FIX_POINT_FRACT_MASK;
|
|
w[0] = imulFixu(FIX_POINT_ONE - fracx, FIX_POINT_ONE - fracy);
|
|
w[1] = imulFixu(fracx, FIX_POINT_ONE - fracy);
|
|
w[2] = imulFixu(FIX_POINT_ONE - fracx, fracy);
|
|
w[3] = imulFixu(fracx, fracy);
|
|
}
|
|
|
|
//wraps positive (ignoring negative)
|
|
tVideoSample t[4];
|
|
{
|
|
size_t o0, o1, o2, o3;
|
|
o0 = (((ty) & tex->textureYMask) >> FIX_POINT_PRE) << tex->pitchlog2;
|
|
o1 = (((ty + FIX_POINT_ONE) & tex->textureYMask) >> FIX_POINT_PRE) << tex->pitchlog2;
|
|
o2 = ((tx)& tex->textureXMask) >> (unsigned)(FIX_POINT_PRE - SOFTWARE_DRIVER_2_TEXTURE_GRANULARITY);
|
|
o3 = ((tx + FIX_POINT_ONE) & tex->textureXMask) >> (unsigned)(FIX_POINT_PRE - SOFTWARE_DRIVER_2_TEXTURE_GRANULARITY);
|
|
|
|
t[0] = *((tVideoSample*)((u8*)tex->data + (o0 + o2)));
|
|
t[1] = *((tVideoSample*)((u8*)tex->data + (o0 + o3)));
|
|
t[2] = *((tVideoSample*)((u8*)tex->data + (o1 + o2)));
|
|
t[3] = *((tVideoSample*)((u8*)tex->data + (o1 + o3)));
|
|
}
|
|
|
|
r = (((t[0] & MASK_R) >> SHIFT_R) * w[0]) +
|
|
(((t[1] & MASK_R) >> SHIFT_R) * w[1]) +
|
|
(((t[2] & MASK_R) >> SHIFT_R) * w[2]) +
|
|
(((t[3] & MASK_R) >> SHIFT_R) * w[3]);
|
|
|
|
g = (((t[0] & MASK_G) >> SHIFT_G) * w[0]) +
|
|
(((t[1] & MASK_G) >> SHIFT_G) * w[1]) +
|
|
(((t[2] & MASK_G) >> SHIFT_G) * w[2]) +
|
|
(((t[3] & MASK_G) >> SHIFT_G) * w[3]);
|
|
|
|
b = ((t[0] & MASK_B) * w[0]) +
|
|
((t[1] & MASK_B) * w[1]) +
|
|
((t[2] & MASK_B) * w[2]) +
|
|
((t[3] & MASK_B) * w[3]);
|
|
}
|
|
|
|
#endif
|
|
|
|
// get Sample bilinear
|
|
static REALINLINE void getSample_texture(tFixPoint &a, tFixPoint &r, tFixPoint &g, tFixPoint &b,
|
|
const sInternalTexture* burning_restrict tex, const tFixPointu tx, const tFixPointu ty
|
|
)
|
|
{
|
|
|
|
tFixPointu a00, r00, g00, b00;
|
|
tFixPointu a01, r01, g01, b01;
|
|
tFixPointu a10, r10, g10, b10;
|
|
tFixPointu a11, r11, g11, b11;
|
|
|
|
size_t o0, o1, o2, o3;
|
|
tVideoSample t00;
|
|
|
|
o0 = (((ty)& tex->textureYMask) >> FIX_POINT_PRE) << tex->pitchlog2;
|
|
o1 = (((ty + FIX_POINT_ONE) & tex->textureYMask) >> FIX_POINT_PRE) << tex->pitchlog2;
|
|
o2 = ((tx)& tex->textureXMask) >> (FIX_POINT_PRE - SOFTWARE_DRIVER_2_TEXTURE_GRANULARITY);
|
|
o3 = ((tx + FIX_POINT_ONE) & tex->textureXMask) >> (FIX_POINT_PRE - SOFTWARE_DRIVER_2_TEXTURE_GRANULARITY);
|
|
|
|
t00 = *((tVideoSample*)((u8*)tex->data + (o0 + o2)));
|
|
a00 = (t00 & MASK_A) >> SHIFT_A;
|
|
r00 = (t00 & MASK_R) >> SHIFT_R;
|
|
g00 = (t00 & MASK_G) >> SHIFT_G;
|
|
b00 = (t00 & MASK_B);
|
|
|
|
t00 = *((tVideoSample*)((u8*)tex->data + (o0 + o3)));
|
|
a10 = (t00 & MASK_A) >> SHIFT_A;
|
|
r10 = (t00 & MASK_R) >> SHIFT_R;
|
|
g10 = (t00 & MASK_G) >> SHIFT_G;
|
|
b10 = (t00 & MASK_B);
|
|
|
|
t00 = *((tVideoSample*)((u8*)tex->data + (o1 + o2)));
|
|
a01 = (t00 & MASK_A) >> SHIFT_A;
|
|
r01 = (t00 & MASK_R) >> SHIFT_R;
|
|
g01 = (t00 & MASK_G) >> SHIFT_G;
|
|
b01 = (t00 & MASK_B);
|
|
|
|
t00 = *((tVideoSample*)((u8*)tex->data + (o1 + o3)));
|
|
a11 = (t00 & MASK_A) >> SHIFT_A;
|
|
r11 = (t00 & MASK_R) >> SHIFT_R;
|
|
g11 = (t00 & MASK_G) >> SHIFT_G;
|
|
b11 = (t00 & MASK_B);
|
|
|
|
const tFixPointu txFract = tx & FIX_POINT_FRACT_MASK;
|
|
const tFixPointu txFractInv = FIX_POINT_ONE - txFract;
|
|
|
|
const tFixPointu tyFract = ty & FIX_POINT_FRACT_MASK;
|
|
const tFixPointu tyFractInv = FIX_POINT_ONE - tyFract;
|
|
|
|
const tFixPointu w00 = imulFixu(txFractInv, tyFractInv);
|
|
const tFixPointu w10 = imulFixu(txFract, tyFractInv);
|
|
const tFixPointu w01 = imulFixu(txFractInv, tyFract);
|
|
const tFixPointu w11 = imulFixu(txFract, tyFract);
|
|
|
|
a = (a00 * w00) +
|
|
(a01 * w01) +
|
|
(a10 * w10) +
|
|
(a11 * w11);
|
|
|
|
fix_alpha_color_max(a);
|
|
|
|
r = (r00 * w00) +
|
|
(r01 * w01) +
|
|
(r10 * w10) +
|
|
(r11 * w11);
|
|
|
|
g = (g00 * w00) +
|
|
(g01 * w01) +
|
|
(g10 * w10) +
|
|
(g11 * w11);
|
|
|
|
b = (b00 * w00) +
|
|
(b01 * w01) +
|
|
(b10 * w10) +
|
|
(b11 * w11);
|
|
|
|
}
|
|
|
|
#else // SOFTWARE_DRIVER_2_BILINEAR
|
|
|
|
// get Sample linear == getSample_fixpoint
|
|
|
|
static REALINLINE void getSample_texture(tFixPoint &r, tFixPoint &g, tFixPoint &b,
|
|
const sInternalTexture* burning_restrict t, const tFixPointu tx, const tFixPointu ty
|
|
)
|
|
{
|
|
size_t ofs;
|
|
ofs = (((ty + FIX_POINT_ZERO_DOT_FIVE) & t->textureYMask) >> FIX_POINT_PRE) << t->pitchlog2;
|
|
ofs += ((tx + FIX_POINT_ZERO_DOT_FIVE) & t->textureXMask) >> (FIX_POINT_PRE - SOFTWARE_DRIVER_2_TEXTURE_GRANULARITY);
|
|
|
|
// texel
|
|
const tVideoSample t00 = *((tVideoSample*)((u8*)t->data + ofs));
|
|
|
|
(tFixPointu &)r = (t00 & MASK_R) >> (SHIFT_R - FIX_POINT_PRE);
|
|
(tFixPointu &)g = (t00 & MASK_G) << (FIX_POINT_PRE - SHIFT_G);
|
|
(tFixPointu &)b = (t00 & MASK_B) << (FIX_POINT_PRE - SHIFT_B);
|
|
}
|
|
|
|
static REALINLINE void getSample_texture(tFixPoint &a, tFixPoint &r, tFixPoint &g, tFixPoint &b,
|
|
const sInternalTexture* burning_restrict t, const tFixPointu tx, const tFixPointu ty
|
|
)
|
|
{
|
|
size_t ofs;
|
|
ofs = (((ty + FIX_POINT_ZERO_DOT_FIVE) & t->textureYMask) >> FIX_POINT_PRE) << t->pitchlog2;
|
|
ofs += ((tx + FIX_POINT_ZERO_DOT_FIVE) & t->textureXMask) >> (FIX_POINT_PRE - SOFTWARE_DRIVER_2_TEXTURE_GRANULARITY);
|
|
|
|
// texel
|
|
const tVideoSample t00 = *((tVideoSample*)((u8*)t->data + ofs));
|
|
|
|
(tFixPointu &)a = (t00 & MASK_A) >> (SHIFT_A - FIX_POINT_PRE);
|
|
fix_alpha_color_max(a);
|
|
(tFixPointu &)r = (t00 & MASK_R) >> (SHIFT_R - FIX_POINT_PRE);
|
|
(tFixPointu &)g = (t00 & MASK_G) << (FIX_POINT_PRE - SHIFT_G);
|
|
(tFixPointu &)b = (t00 & MASK_B) << (FIX_POINT_PRE - SHIFT_B);
|
|
}
|
|
|
|
|
|
#endif // SOFTWARE_DRIVER_2_BILINEAR
|
|
|
|
|
|
// 2D Region closed [x0;x1]
|
|
struct AbsRectangle
|
|
{
|
|
s32 x0;
|
|
s32 y0;
|
|
s32 x1;
|
|
s32 y1;
|
|
};
|
|
|
|
//! 2D Intersection test
|
|
inline bool intersect ( AbsRectangle &dest, const AbsRectangle& a, const AbsRectangle& b)
|
|
{
|
|
dest.x0 = core::s32_max( a.x0, b.x0 );
|
|
dest.y0 = core::s32_max( a.y0, b.y0 );
|
|
dest.x1 = core::s32_min( a.x1, b.x1 );
|
|
dest.y1 = core::s32_min( a.y1, b.y1 );
|
|
return dest.x0 < dest.x1 && dest.y0 < dest.y1;
|
|
}
|
|
|
|
#if 0
|
|
// some 1D defines
|
|
struct sIntervall
|
|
{
|
|
s32 start;
|
|
s32 end;
|
|
};
|
|
|
|
// returning intersection width
|
|
inline s32 intervall_intersect_test( const sIntervall& a, const sIntervall& b)
|
|
{
|
|
return core::s32_min( a.end, b.end ) - core::s32_max( a.start, b.start );
|
|
}
|
|
|
|
#endif
|
|
|
|
// strings
|
|
static inline void tiny_strncpy(char* to, const char* from, const size_t count)
|
|
{
|
|
for (size_t r = 0; r < count && (*to = *from) != '\0'; ++from, ++to, ++r);
|
|
*to = '\0';
|
|
}
|
|
|
|
#define tiny_strcpy(a, b) tiny_strncpy(a,b,sizeof(a)-1)
|
|
|
|
|
|
// tiny_isequal = !strncmp(a,b,sizeof(a)-1)
|
|
static inline int tiny_isequal(const char *s1, const char *s2, size_t n)
|
|
{
|
|
do {
|
|
if (*s1 != *s2++) return 0;
|
|
if (*s1++ == 0)
|
|
break;
|
|
} while (--n != 0);
|
|
return 1;
|
|
}
|
|
|
|
#define tiny_istoken(a, b) tiny_isequal(a,b,sizeof(a)-1) != 0
|
|
|
|
|
|
} // end namespace irr
|
|
|
|
#endif
|