mirror of
https://github.com/reactos/reactos.git
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for 24bpp
1. Remove inline asm for hline and implement a asm version of it in intel syntax. (optimzeing of this version can be done better, but it for be done for now) 2. set eorly style on file I forget. svn path=/trunk/; revision=23732
This commit is contained in:
parent
c5edc7e6d3
commit
6518b5361d
6 changed files with 466 additions and 310 deletions
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@ -38,105 +38,7 @@ DIB_24BPP_GetPixel(SURFOBJ *SurfObj, LONG x, LONG y)
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return *(PUSHORT)(addr) + (*(addr + 2) << 16);
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}
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VOID
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DIB_24BPP_HLine(SURFOBJ *SurfObj, LONG x1, LONG x2, LONG y, ULONG c)
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{
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PBYTE addr = (PBYTE)SurfObj->pvScan0 + y * SurfObj->lDelta + (x1 << 1) + x1;
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ULONG Count = x2 - x1;
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#if !defined(_M_IX86) || defined(_MSC_VER)
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ULONG MultiCount;
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ULONG Fill[3];
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#endif
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if (Count < 8)
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{
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/* For small fills, don't bother doing anything fancy */
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while (Count--)
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{
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*(PUSHORT)(addr) = c;
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addr += 2;
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*(addr) = c >> 16;
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addr += 1;
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}
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}
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else
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{
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/* Align to 4-byte address */
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while (0 != ((ULONG_PTR) addr & 0x3))
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{
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*(PUSHORT)(addr) = c;
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addr += 2;
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*(addr) = c >> 16;
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addr += 1;
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Count--;
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}
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/* If the color we need to fill with is 0ABC, then the final mem pattern
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* (note little-endianness) would be:
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*
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* |C.B.A|C.B.A|C.B.A|C.B.A| <- pixel borders
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* |C.B.A.C|B.A.C.B|A.C.B.A| <- ULONG borders
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*
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* So, taking endianness into account again, we need to fill with these
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* ULONGs: CABC BCAB ABCA */
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#if defined(_M_IX86) && !defined(_MSC_VER)
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/* This is about 30% faster than the generic C code below */
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__asm__ __volatile__ (
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" movl %1, %%ecx\n"
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" andl $0xffffff, %%ecx\n" /* 0ABC */
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" movl %%ecx, %%ebx\n" /* Construct BCAB in ebx */
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" shrl $8, %%ebx\n"
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" movl %%ecx, %%eax\n"
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" shll $16, %%eax\n"
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" orl %%eax, %%ebx\n"
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" movl %%ecx, %%edx\n" /* Construct ABCA in edx */
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" shll $8, %%edx\n"
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" movl %%ecx, %%eax\n"
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" shrl $16, %%eax\n"
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" orl %%eax, %%edx\n"
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" movl %%ecx, %%eax\n" /* Construct CABC in eax */
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" shll $24, %%eax\n"
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" orl %%ecx, %%eax\n"
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" movl %2, %%ecx\n" /* Load count */
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" shr $2, %%ecx\n"
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" movl %3, %%edi\n" /* Load dest */
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"0:\n"
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" movl %%eax, (%%edi)\n" /* Store 4 pixels, 12 bytes */
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" movl %%ebx, 4(%%edi)\n"
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" movl %%edx, 8(%%edi)\n"
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" addl $12, %%edi\n"
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" dec %%ecx\n"
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" jnz 0b\n"
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" movl %%edi, %0\n"
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: "=m"(addr)
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: "m"(c), "m"(Count), "m"(addr)
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: "%eax", "%ebx", "%ecx", "%edx", "%edi");
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#else
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c = c & 0xffffff; /* 0ABC */
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Fill[0] = c | (c << 24); /* CABC */
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Fill[1] = (c >> 8) | (c << 16); /* BCAB */
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Fill[2] = (c << 8) | (c >> 16); /* ABCA */
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MultiCount = Count / 4;
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do
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{
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*(PULONG)addr = Fill[0];
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addr += 4;
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*(PULONG)addr = Fill[1];
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addr += 4;
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*(PULONG)addr = Fill[2];
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addr += 4;
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}
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while (0 != --MultiCount);
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#endif
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Count = Count & 0x03;
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while (0 != Count--)
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{
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*(PUSHORT)(addr) = c;
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addr += 2;
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*(addr) = c >> 16;
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addr += 1;
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}
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}
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}
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VOID
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DIB_24BPP_VLine(SURFOBJ *SurfObj, LONG x, LONG y1, LONG y2, ULONG c)
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89
reactos/subsystems/win32/win32k/dib/dib24bppc.c
Normal file
89
reactos/subsystems/win32/win32k/dib/dib24bppc.c
Normal file
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@ -0,0 +1,89 @@
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/*
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* ReactOS W32 Subsystem
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* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 ReactOS Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* $Id$ */
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#include <w32k.h>
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#define NDEBUG
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#include <debug.h>
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VOID
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DIB_24BPP_HLine(SURFOBJ *SurfObj, LONG x1, LONG x2, LONG y, ULONG c)
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{
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PBYTE addr = (PBYTE)SurfObj->pvScan0 + y * SurfObj->lDelta + (x1 << 1) + x1;
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ULONG Count = x2 - x1;
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if (Count < 8)
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{
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/* For small fills, don't bother doing anything fancy */
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while (Count--)
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{
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*(PUSHORT)(addr) = c;
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addr += 2;
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*(addr) = c >> 16;
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addr += 1;
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}
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}
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else
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{
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/* Align to 4-byte address */
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while (0 != ((ULONG_PTR) addr & 0x3))
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{
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*(PUSHORT)(addr) = c;
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addr += 2;
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*(addr) = c >> 16;
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addr += 1;
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Count--;
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}
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/* If the color we need to fill with is 0ABC, then the final mem pattern
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* (note little-endianness) would be:
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*
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* |C.B.A|C.B.A|C.B.A|C.B.A| <- pixel borders
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* |C.B.A.C|B.A.C.B|A.C.B.A| <- ULONG borders
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*
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* So, taking endianness into account again, we need to fill with these
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* ULONGs: CABC BCAB ABCA */
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c = c & 0xffffff; /* 0ABC */
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Fill[0] = c | (c << 24); /* CABC */
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Fill[1] = (c >> 8) | (c << 16); /* BCAB */
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Fill[2] = (c << 8) | (c >> 16); /* ABCA */
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MultiCount = Count / 4;
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do
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{
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*(PULONG)addr = Fill[0];
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addr += 4;
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*(PULONG)addr = Fill[1];
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addr += 4;
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*(PULONG)addr = Fill[2];
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addr += 4;
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}
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while (0 != --MultiCount);
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Count = Count & 0x03;
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while (0 != Count--)
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{
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*(PUSHORT)(addr) = c;
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addr += 2;
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*(addr) = c >> 16;
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addr += 1;
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}
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}
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}
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@ -1,51 +1,51 @@
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/*
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* ReactOS W32 Subsystem
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* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 2004, 2005, 2006 ReactOS Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* $Id: */
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#include <w32k.h>
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#define NDEBUG
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#include <debug.h>
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VOID
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DIB_32BPP_HLine(SURFOBJ *SurfObj, LONG x1, LONG x2, LONG y, ULONG c)
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{
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PBYTE byteaddr = (ULONG_PTR)SurfObj->pvScan0 + y * SurfObj->lDelta;
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PDWORD addr = (PDWORD)byteaddr + x1;
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LONG cx = x1;
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while(cx < x2)
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{
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*addr = (DWORD)c;
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++addr;
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++cx;
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}
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}
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BOOLEAN
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DIB_32BPP_ColorFill(SURFOBJ* DestSurface, RECTL* DestRect, ULONG color)
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{
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ULONG DestY;
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for (DestY = DestRect->top; DestY< DestRect->bottom; DestY++)
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{
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DIB_32BPP_HLine (DestSurface, DestRect->left, DestRect->right, DestY, color);
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}
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return TRUE;
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/*
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* ReactOS W32 Subsystem
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* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 2004, 2005, 2006 ReactOS Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* $Id: */
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#include <w32k.h>
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#define NDEBUG
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#include <debug.h>
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VOID
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DIB_32BPP_HLine(SURFOBJ *SurfObj, LONG x1, LONG x2, LONG y, ULONG c)
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{
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PBYTE byteaddr = (ULONG_PTR)SurfObj->pvScan0 + y * SurfObj->lDelta;
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PDWORD addr = (PDWORD)byteaddr + x1;
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LONG cx = x1;
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while(cx < x2)
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{
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*addr = (DWORD)c;
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++addr;
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++cx;
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}
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}
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BOOLEAN
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DIB_32BPP_ColorFill(SURFOBJ* DestSurface, RECTL* DestRect, ULONG color)
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{
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ULONG DestY;
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for (DestY = DestRect->top; DestY< DestRect->bottom; DestY++)
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{
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DIB_32BPP_HLine (DestSurface, DestRect->left, DestRect->right, DestY, color);
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}
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return TRUE;
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}
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165
reactos/subsystems/win32/win32k/dib/i386/dib24bpp_hline.s
Normal file
165
reactos/subsystems/win32/win32k/dib/i386/dib24bpp_hline.s
Normal file
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@ -0,0 +1,165 @@
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/*
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* ReactOS W32 Subsystem
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* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 2004, 2005, 2006 ReactOS Team
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*
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* This program is free software; you can redistribute it and/or modify
|
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* it under the terms of the GNU General Public License as published by
|
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* the Free Software Foundation; either version 2 of the License, or
|
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* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
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* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* $Id: */
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.globl _DIB_24BPP_HLine
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.intel_syntax noprefix
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.def _DIB_24BPP_HLine;
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.scl 2;
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.type 32;
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.endef
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_DIB_24BPP_HLine:
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push edi
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push esi
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push ebx
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sub esp, 24
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mov ebx, [esp+40]
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mov edi, [esp+52]
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mov ecx, [esp+44]
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mov eax, [ebx+36]
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mov esi, [ebx+32]
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mov edx, [esp+48]
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imul eax, edi
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sub edx, ecx
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mov [esp], edx
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add eax, esi
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lea eax, [eax+ecx*2]
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add eax, ecx
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cmp edx, 7
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mov esi, edx
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mov [esp+4], eax
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ja Align4byte
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lea eax, [edx-1]
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mov [esp], eax
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inc eax
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jnz small_fill
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add esp, 24
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pop ebx
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pop esi
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pop edi
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ret
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/* For small fills, don't bother doing anything fancy */
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small_fill:
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movzx ecx, word ptr [esp+58]
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mov edx, [esp+4]
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mov esi, [esp+56]
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lea eax, [edx+2]
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mov [esp+4], eax
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mov [edx+2], cl
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mov eax, [esp]
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inc dword ptr [esp+4]
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mov [edx], si
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dec eax
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mov [esp], eax
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inc eax
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jnz small_fill
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add esp, 24
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pop ebx
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pop esi
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pop edi
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ret
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Align4byte:
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/* Align to 4-byte address */
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test al, 3
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mov ecx, eax
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jz loop1
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lea esi, [esi+0]
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lea edi, [edi+0]
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loopasmversion:
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/* This is about 30% faster than the generic C code below */
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movzx edx, word ptr [esp+58]
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lea edi, [ecx+2]
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mov eax, [esp+56]
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mov [esp+4], edi
|
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mov [ecx+2], dl
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mov ebx, [esp+4]
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mov [ecx], ax
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mov edx, [esp]
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inc ebx
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mov [esp+4], ebx
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dec edx
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test bl, 3
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mov [esp], edx
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mov ecx, ebx
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jnz loopasmversion
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mov esi, edx
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loop1:
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mov ecx, [esp+56]
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and ecx, 16777215
|
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mov ebx, ecx
|
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shr ebx, 8
|
||||
mov eax, ecx
|
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shl eax, 16
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or ebx, eax
|
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mov edx, ecx
|
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shl edx, 8
|
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mov eax, ecx
|
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shr eax, 16
|
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or edx, eax
|
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mov eax, ecx
|
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shl eax, 24
|
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or eax, ecx
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mov ecx, [esp]
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shr ecx, 2
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mov edi, [esp+4]
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loop2:
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mov [edi], eax
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mov [edi+4], ebx
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mov [edi+8], edx
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add edi, 12
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dec ecx
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jnz loop2
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mov [esp+4], edi
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and esi, 3
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lea eax, [esi-1]
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mov [esp], eax
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inc eax
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jnz leftoverfromthemainloop
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add esp, 24
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pop ebx
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pop esi
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pop edi
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ret
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leftoverfromthemainloop:
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/* Count = Count & 0x03; */
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mov ecx, [esp+4]
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mov ebx, [esp+56]
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lea esi, [ecx+2]
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mov [ecx], bx
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shr ebx, 16
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mov [esp+4], esi
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mov [ecx+2], bl
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mov eax, [esp]
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inc dword ptr [esp+4]
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dec eax
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mov [esp], eax
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inc eax
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jnz leftoverfromthemainloop
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add esp, 24
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pop ebx
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pop esi
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pop edi
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||||
ret
|
|
@ -1,93 +1,93 @@
|
|||
|
||||
/*
|
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* ReactOS W32 Subsystem
|
||||
* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 2004, 2005, 2006 ReactOS Team
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*/
|
||||
/* $Id: */
|
||||
.globl _DIB_32BPP_ColorFill
|
||||
.intel_syntax noprefix
|
||||
|
||||
.def _DIB_32BPP_ColorFill;
|
||||
.scl 2;
|
||||
.type 32;
|
||||
.endef
|
||||
|
||||
_DIB_32BPP_ColorFill:
|
||||
sub esp, 24
|
||||
mov ecx, [esp+32]
|
||||
mov [esp+8], ebx
|
||||
mov ebx, [esp+28]
|
||||
mov [esp+20], ebp
|
||||
mov ebp, [esp+36]
|
||||
mov [esp+12], esi
|
||||
mov [esp+16], edi
|
||||
mov edi, [ecx]
|
||||
mov esi, [ecx+8]
|
||||
mov edx, [ebx+36]
|
||||
sub esi, edi
|
||||
mov edi, [ecx+4]
|
||||
mov eax, edi
|
||||
imul eax, edx
|
||||
add eax, [ebx+32]
|
||||
mov ebx, [ecx]
|
||||
lea eax, [eax+ebx*4]
|
||||
mov [esp+4], eax
|
||||
mov eax, [ecx+12]
|
||||
cmp eax, edi
|
||||
jbe end
|
||||
sub eax, edi
|
||||
mov [esp], eax
|
||||
lea esi, [esi+0]
|
||||
|
||||
for_loop:
|
||||
mov eax, ebp
|
||||
cld
|
||||
mov ebx, esi
|
||||
mov edi, [esp+4]
|
||||
test edi, 3
|
||||
jnz algin_draw
|
||||
mov ecx, esi
|
||||
rep stosd
|
||||
add [esp+4], edx
|
||||
dec dword ptr [esp]
|
||||
jnz for_loop
|
||||
end:
|
||||
mov ebx, [esp+8]
|
||||
mov eax, 1
|
||||
mov esi, [esp+12]
|
||||
mov edi, [esp+16]
|
||||
mov ebp, [esp+20]
|
||||
add esp, 24
|
||||
ret
|
||||
|
||||
algin_draw:
|
||||
stosd
|
||||
dec ebx
|
||||
mov ecx, ebx
|
||||
rol eax, 16
|
||||
stosd
|
||||
add [esp+4], edx
|
||||
dec dword ptr [esp]
|
||||
jnz for_loop
|
||||
|
||||
mov ebx, [esp+8]
|
||||
mov eax, 1
|
||||
mov esi, [esp+12]
|
||||
mov edi, [esp+16]
|
||||
mov ebp, [esp+20]
|
||||
add esp, 24
|
||||
ret
|
||||
|
||||
/*
|
||||
* ReactOS W32 Subsystem
|
||||
* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 2004, 2005, 2006 ReactOS Team
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*/
|
||||
/* $Id: */
|
||||
.globl _DIB_32BPP_ColorFill
|
||||
.intel_syntax noprefix
|
||||
|
||||
.def _DIB_32BPP_ColorFill;
|
||||
.scl 2;
|
||||
.type 32;
|
||||
.endef
|
||||
|
||||
_DIB_32BPP_ColorFill:
|
||||
sub esp, 24
|
||||
mov ecx, [esp+32]
|
||||
mov [esp+8], ebx
|
||||
mov ebx, [esp+28]
|
||||
mov [esp+20], ebp
|
||||
mov ebp, [esp+36]
|
||||
mov [esp+12], esi
|
||||
mov [esp+16], edi
|
||||
mov edi, [ecx]
|
||||
mov esi, [ecx+8]
|
||||
mov edx, [ebx+36]
|
||||
sub esi, edi
|
||||
mov edi, [ecx+4]
|
||||
mov eax, edi
|
||||
imul eax, edx
|
||||
add eax, [ebx+32]
|
||||
mov ebx, [ecx]
|
||||
lea eax, [eax+ebx*4]
|
||||
mov [esp+4], eax
|
||||
mov eax, [ecx+12]
|
||||
cmp eax, edi
|
||||
jbe end
|
||||
sub eax, edi
|
||||
mov [esp], eax
|
||||
lea esi, [esi+0]
|
||||
|
||||
for_loop:
|
||||
mov eax, ebp
|
||||
cld
|
||||
mov ebx, esi
|
||||
mov edi, [esp+4]
|
||||
test edi, 3
|
||||
jnz algin_draw
|
||||
mov ecx, esi
|
||||
rep stosd
|
||||
add [esp+4], edx
|
||||
dec dword ptr [esp]
|
||||
jnz for_loop
|
||||
end:
|
||||
mov ebx, [esp+8]
|
||||
mov eax, 1
|
||||
mov esi, [esp+12]
|
||||
mov edi, [esp+16]
|
||||
mov ebp, [esp+20]
|
||||
add esp, 24
|
||||
ret
|
||||
|
||||
algin_draw:
|
||||
stosd
|
||||
dec ebx
|
||||
mov ecx, ebx
|
||||
rol eax, 16
|
||||
stosd
|
||||
add [esp+4], edx
|
||||
dec dword ptr [esp]
|
||||
jnz for_loop
|
||||
|
||||
mov ebx, [esp+8]
|
||||
mov eax, 1
|
||||
mov esi, [esp+12]
|
||||
mov edi, [esp+16]
|
||||
mov ebp, [esp+20]
|
||||
add esp, 24
|
||||
ret
|
||||
|
|
|
@ -1,69 +1,69 @@
|
|||
/*
|
||||
* ReactOS W32 Subsystem
|
||||
* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 2004, 2005, 2006 ReactOS Team
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*/
|
||||
/* $Id: */
|
||||
|
||||
.globl _DIB_32BPP_HLine
|
||||
.intel_syntax noprefix
|
||||
|
||||
.def _DIB_32BPP_HLine;
|
||||
.scl 2;
|
||||
.type 32;
|
||||
.endef
|
||||
|
||||
_DIB_32BPP_HLine:
|
||||
sub esp, 12 // rember the base is not hex it is dec
|
||||
mov ecx, [esp+16]
|
||||
mov [esp+4], ebx
|
||||
mov edx, [esp+20] // edx = LONG x1
|
||||
mov [esp+8], edi
|
||||
mov edi, [esp+28]
|
||||
mov eax, [ecx+36]
|
||||
mov ebx, [esp+24] // ebx = LONG x2
|
||||
imul eax, edi
|
||||
mov edi, [ecx+32]
|
||||
sub ebx, edx // cx = (x2 - x1) ;
|
||||
add eax, edi
|
||||
lea edx, [eax+edx*4]
|
||||
mov [esp], edx
|
||||
cld
|
||||
mov eax, [esp+32]
|
||||
mov edi, [esp]
|
||||
test edi, 3 // Align to fullword boundary
|
||||
jnz short _save_rest
|
||||
mov ecx, ebx // Setup count of fullwords to fill
|
||||
rep stosd
|
||||
|
||||
mov ebx, [esp+4]
|
||||
mov edi, [esp+8]
|
||||
add esp, 12
|
||||
ret
|
||||
_save_rest:
|
||||
stosw
|
||||
ror eax, 16
|
||||
mov ecx, ebx // Setup count of fullwords to fill
|
||||
dec ecx
|
||||
rep stosd // The actual fill
|
||||
shr eax, 16
|
||||
stosw
|
||||
|
||||
mov ebx, [esp+4]
|
||||
mov edi, [esp+8]
|
||||
add esp, 12
|
||||
ret
|
||||
|
||||
/*
|
||||
* ReactOS W32 Subsystem
|
||||
* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 2004, 2005, 2006 ReactOS Team
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*/
|
||||
/* $Id: */
|
||||
|
||||
.globl _DIB_32BPP_HLine
|
||||
.intel_syntax noprefix
|
||||
|
||||
.def _DIB_32BPP_HLine;
|
||||
.scl 2;
|
||||
.type 32;
|
||||
.endef
|
||||
|
||||
_DIB_32BPP_HLine:
|
||||
sub esp, 12 // rember the base is not hex it is dec
|
||||
mov ecx, [esp+16]
|
||||
mov [esp+4], ebx
|
||||
mov edx, [esp+20] // edx = LONG x1
|
||||
mov [esp+8], edi
|
||||
mov edi, [esp+28]
|
||||
mov eax, [ecx+36]
|
||||
mov ebx, [esp+24] // ebx = LONG x2
|
||||
imul eax, edi
|
||||
mov edi, [ecx+32]
|
||||
sub ebx, edx // cx = (x2 - x1) ;
|
||||
add eax, edi
|
||||
lea edx, [eax+edx*4]
|
||||
mov [esp], edx
|
||||
cld
|
||||
mov eax, [esp+32]
|
||||
mov edi, [esp]
|
||||
test edi, 3 // Align to fullword boundary
|
||||
jnz short _save_rest
|
||||
mov ecx, ebx // Setup count of fullwords to fill
|
||||
rep stosd
|
||||
|
||||
mov ebx, [esp+4]
|
||||
mov edi, [esp+8]
|
||||
add esp, 12
|
||||
ret
|
||||
_save_rest:
|
||||
stosw
|
||||
ror eax, 16
|
||||
mov ecx, ebx // Setup count of fullwords to fill
|
||||
dec ecx
|
||||
rep stosd // The actual fill
|
||||
shr eax, 16
|
||||
stosw
|
||||
|
||||
mov ebx, [esp+4]
|
||||
mov edi, [esp+8]
|
||||
add esp, 12
|
||||
ret
|
||||
|
||||
|
|
Loading…
Reference in a new issue