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Adding mistakenly deleted file
svn-id: r27805
This commit is contained in:
Neil Millstone
parent
951ffd0684
commit
b49b2b7db3
400
backends/platform/ds/arm9/source/blitters.cpp
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400
backends/platform/ds/arm9/source/blitters.cpp
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@ -0,0 +1,400 @@
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/* ScummVM - Scumm Interpreter
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* Copyright (C) 2005-2006 Neil Millstone
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* Copyright (C) 2006 The ScummVM project
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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*/
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#include "stdafx.h"
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#include "blitters.h"
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#define CHARSET_MASK_TRANSPARENCY 253
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//#define PERFECT_5_TO_4_RESCALING
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namespace DS {
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void asmDrawStripToScreen(int height, int width, byte const* text, byte const* src, byte* dst,
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int vsPitch, int vmScreenWidth, int textSurfacePitch) {
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if (height <= 0) height = 1;
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if (width < 4) return;
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width &= ~4;
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// src = (const byte *) (((int) (src)) & (~4));
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// dst = (byte *) (((int) (dst)) & (~4));
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// text = (const byte *) (((int) (text)) & (~4));
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asm ( "mov r5, %0\n" // Height
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"yLoop:\n"
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"mov r3, #0\n" // X pos
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"xLoop:\n"
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"ldr r4, [%2, r3]\n" // Load text layer word
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"cmp r4, %5\n"
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"bne singleByteCompare\n"
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"ldr r4, [%3, r3]\n"
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"str r4, [%4, r3]\n"
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"add r3, r3, #4\n"
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"cmp r3, %1\n" // x == width?
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"blt xLoop\n"
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"add %2, %2, %8\n" // src += vs->pitch
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"add %3, %3, %6\n" // dst += _vm->_screenWidth
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"add %4, %4, %7\n" // text += _textSurface.pitch
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"sub r5, r5, #1\n" // y -= 1
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"cmp r5, #0\n" // y == 0?
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"bne yLoop\n"
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"b end\n"
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"singleByteCompare:\n"
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"ldrb r4, [%2, r3]\n" // Load text byte
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"cmps r4, %5, lsr #24\n" // Compare with mask
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"strneb r4, [%4, r3]\n" // Store if not equal
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"ldreqb r4, [%3, r3]\n" // Otherwise Load src byte
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"streqb r4, [%4, r3]\n" // Store it
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"add r3, r3, #1\n"
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"ldrb r4, [%2, r3]\n" // Load text byte
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"cmps r4, %5, lsr #24\n" // Compare with mask
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"strneb r4, [%4, r3]\n" // Store if not equal
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"ldreqb r4, [%3, r3]\n" // Otherwise Load src byte
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"streqb r4, [%4, r3]\n" // Store it
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"add r3, r3, #1\n"
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"ldrb r4, [%2, r3]\n" // Load text byte
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"cmps r4, %5, lsr #24\n" // Compare with mask
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"strneb r4, [%4, r3]\n" // Store if not equal
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"ldreqb r4, [%3, r3]\n" // Otherwise Load src byte
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"streqb r4, [%4, r3]\n" // Store it
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"add r3, r3, #1\n"
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"ldrb r4, [%2, r3]\n" // Load text byte
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"cmps r4, %5, lsr #24\n" // Compare with mask
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"strneb r4, [%4, r3]\n" // Store if not equal
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"ldreqb r4, [%3, r3]\n" // Otherwise Load src byte
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"streqb r4, [%4, r3]\n" // Store it
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"add r3, r3, #1\n"
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"cmps r3, %1\n" // x == width?
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"blt xLoop\n" // Repeat
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"add %2, %2, %8\n" // src += vs->pitch
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"add %3, %3, %6\n" // dst += _vm->_screenWidth
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"add %4, %4, %7\n" // text += _textSurface.pitch
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"sub r5, r5, #1\n" // y -= 1
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"cmp r5, #0\n" // y == 0?
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"bne yLoop\n"
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"end:\n"
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: /* no output registers */
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: "r" (height), "r" (width), "r" (text), "r" (src), "r" (dst), "r" (CHARSET_MASK_TRANSPARENCY | (CHARSET_MASK_TRANSPARENCY << 8) | (CHARSET_MASK_TRANSPARENCY << 16) | (CHARSET_MASK_TRANSPARENCY << 24)),
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"r" (vsPitch), "r" (vmScreenWidth), "r" (textSurfacePitch)
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: "r5", "r3", "r4", "%2", "%3", "%4", "memory");
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}
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void asmCopy8Col(byte* dst, int dstPitch, const byte* src, int height) {
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asm("ands r0, %3, #1\n"
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"addne %3, %3, #1\n"
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"bne roll2\n"
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"yLoop2:\n"
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"ldr r0, [%2, #0]\n"
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"str r0, [%0, #0]\n"
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"ldr r0, [%2, #4]\n"
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"str r0, [%0, #4]\n"
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"add %0, %0, %1\n"
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"add %2, %2, %1\n"
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"roll2:\n"
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"ldr r0, [%2, #0]\n"
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"str r0, [%0, #0]\n"
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"ldr r0, [%2, #4]\n"
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"str r0, [%0, #4]\n"
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"add %0, %0, %1\n"
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"add %2, %2, %1\n"
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"subs %3, %3, #2\n"
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"bne yLoop2\n"
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: /* no output registers */
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: "r" (dst), "r" (dstPitch), "r" (src), "r" (height)
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: "r0", "%0", "%2", "%3");
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}
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static bool isDivBy5Ready = false;
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static u32 DIV_BY_5[160];
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void ComputeDivBy5TableIFN()
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{
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if (isDivBy5Ready)
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return;
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isDivBy5Ready = true;
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for(int i=0; i<160; ++i)
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{
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DIV_BY_5[i] = (2*i+5)/10;
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}
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}
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#ifdef PERFECT_5_TO_4_RESCALING
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static inline void RescaleBlock_5x1555_To_4x1555( u16 s0, u16 s1, u16 s2, u16 s3, u16 s4,
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u16* dest)
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{
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u32 bs0 = s0 & 0x1F;
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u32 bs1 = s1 & 0x1F;
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u32 bs2 = s2 & 0x1F;
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u32 bs3 = s3 & 0x1F;
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u32 bs4 = s4 & 0x1F;
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#if 0
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u32 gs0 = (s0 >> 5) & 0x1F;
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u32 gs1 = (s1 >> 5) & 0x1F;
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u32 gs2 = (s2 >> 5) & 0x1F;
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u32 gs3 = (s3 >> 5) & 0x1F;
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u32 gs4 = (s4 >> 5) & 0x1F;
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u32 rs0 = (s0 >> 10) & 0x1F;
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u32 rs1 = (s1 >> 10) & 0x1F;
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u32 rs2 = (s2 >> 10) & 0x1F;
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u32 rs3 = (s3 >> 10) & 0x1F;
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u32 rs4 = (s4 >> 10) & 0x1F;
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#else
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// The compiler absolutely wants to use 0x1F as an immediate, which makes it unable to fold the shift during the and
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u32 mask = 0x1F;
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u32 gs0, gs1, gs2, gs3, gs4;
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asm("and %0, %2, %1, lsr #5" : "=r"(gs0) : "r"(s0), "r"(mask) : );
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asm("and %0, %2, %1, lsr #5" : "=r"(gs1) : "r"(s1), "r"(mask) : );
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asm("and %0, %2, %1, lsr #5" : "=r"(gs2) : "r"(s2), "r"(mask) : );
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asm("and %0, %2, %1, lsr #5" : "=r"(gs3) : "r"(s3), "r"(mask) : );
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asm("and %0, %2, %1, lsr #5" : "=r"(gs4) : "r"(s4), "r"(mask) : );
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u32 rs0, rs1, rs2, rs3, rs4;
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asm("and %0, %2, %1, lsr #10" : "=r"(rs0) : "r"(s0), "r"(mask) : );
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asm("and %0, %2, %1, lsr #10" : "=r"(rs1) : "r"(s1), "r"(mask) : );
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asm("and %0, %2, %1, lsr #10" : "=r"(rs2) : "r"(s2), "r"(mask) : );
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asm("and %0, %2, %1, lsr #10" : "=r"(rs3) : "r"(s3), "r"(mask) : );
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asm("and %0, %2, %1, lsr #10" : "=r"(rs4) : "r"(s4), "r"(mask) : );
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#endif
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u32 rd0 = 4*rs0 + rs1;
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u32 rd1 = 2*rs1 + rs1 + 2*rs2;
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u32 rd2 = 2*rs2 + 2*rs3 + rs3;
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u32 rd3 = rs3 + 4*rs4;
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u32 gd0 = 4*gs0 + gs1;
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u32 gd1 = 2*gs1 + gs1 + 2*gs2;
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u32 gd2 = 2*gs2 + 2*gs3 + gs3;
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u32 gd3 = gs3 + 4*gs4;
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u32 bd0 = 4*bs0 + bs1;
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u32 bd1 = 2*bs1 + bs1 + 2*bs2;
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u32 bd2 = 2*bs2 + 2*bs3 + bs3;
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u32 bd3 = bs3 + 4*bs4;
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#if 0
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// Offsetting for correct rounding
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rd0 = rd0*2+5; rd1 = rd1*2+5; rd2 = rd2*2+5; rd3 = rd3*2+5;
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gd0 = gd0*2+5; gd1 = gd1*2+5; gd2 = gd2*2+5; gd3 = gd3*2+5;
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bd0 = bd0*2+5; bd1 = bd1*2+5; bd2 = bd2*2+5; bd3 = bd3*2+5;
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rd0 = (rd0 * 51) >> 9; rd1 = (rd1 * 51) >> 9; rd2 = (rd2 * 51) >> 9; rd3 = (rd3 * 51) >> 9;
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gd0 = (gd0 * 51) >> 9; gd1 = (gd1 * 51) >> 9; gd2 = (gd2 * 51) >> 9; gd3 = (gd3 * 51) >> 9;
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bd0 = (bd0 * 51) >> 9; bd1 = (bd1 * 51) >> 9; bd2 = (bd2 * 51) >> 9; bd3 = (bd3 * 51) >> 9;
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#else
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rd0 = DIV_BY_5[rd0]; rd1 = DIV_BY_5[rd1]; rd2 = DIV_BY_5[rd2]; rd3 = DIV_BY_5[rd3];
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gd0 = DIV_BY_5[gd0]; gd1 = DIV_BY_5[gd1]; gd2 = DIV_BY_5[gd2]; gd3 = DIV_BY_5[gd3];
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bd0 = DIV_BY_5[bd0]; bd1 = DIV_BY_5[bd1]; bd2 = DIV_BY_5[bd2]; bd3 = DIV_BY_5[bd3];
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#endif
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u32 d10 = 0x80008000 | (rd1 << 26) | (gd1 << 21) | (bd1 << 16) | (rd0 << 10) | (gd0 << 5) | bd0;
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u32 d32 = 0x80008000 | (rd3 << 26) | (gd3 << 21) | (bd3 << 16) | (rd2 << 10) | (gd2 << 5) | bd2;
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((u32*)dest)[0] = d10;
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((u32*)dest)[1] = d32;
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}
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#else
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static inline void RescaleBlock_5x1555_To_4x1555( u16 s0, u16 s1, u16 s2, u16 s3, u16 s4,
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u16* dest)
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{
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u32 ar0bs0 = s0 & 0x7C1F;
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u32 ar0bs1 = s1 & 0x7C1F;
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u32 ar0bs2 = s2 & 0x7C1F;
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u32 ar0bs3 = s3 & 0x7C1F;
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u32 ar0bs4 = s4 & 0x7C1F;
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u32 gs0 = s0 & 0x03E0;
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u32 gs1 = s1 & 0x03E0;
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u32 gs2 = s2 & 0x03E0;
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u32 gs3 = s3 & 0x03E0;
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u32 gs4 = s4 & 0x03E0;
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u32 ar0bd0 = (3*ar0bs0 + ar0bs1) >> 2;
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u32 ar0bd1 = ( ar0bs1 + ar0bs2) >> 1;
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u32 ar0bd2 = ( ar0bs2 + ar0bs3) >> 1;
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u32 ar0bd3 = ( ar0bs3 + 3*ar0bs4) >> 2;
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u32 gd0 = (3*gs0 + gs1) >> 2;
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u32 gd1 = ( gs1 + gs2) >> 1;
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u32 gd2 = ( gs2 + gs3) >> 1;
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u32 gd3 = ( gs3 + 3*gs4) >> 2;
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u32 d0 = (ar0bd0 & 0xFC1F) | (gd0 & 0x03E0);
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u32 d1 = (ar0bd1 & 0xFC1F) | (gd1 & 0x03E0);
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u32 d2 = (ar0bd2 & 0xFC1F) | (gd2 & 0x03E0);
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u32 d3 = (ar0bd3 & 0xFC1F) | (gd3 & 0x03E0);
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u32 d10 = 0x80008000 | (d1 << 16) | d0;
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u32 d32 = 0x80008000 | (d3 << 16) | d2;
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((u32*)dest)[0] = d10;
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((u32*)dest)[1] = d32;
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}
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#endif
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static inline void RescaleBlock_5x8888_To_4x1555( u32 s0, u32 s1, u32 s2, u32 s3, u32 s4,
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u16* dest)
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{
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u32 d0 = 4*s0 + s1;
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u32 d1 = 2*s1 + s1 + 2*s2;
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u32 bd0 = (d0 << 24) >> 24;
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u32 bd1 = (d1 << 24) >> 24;
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u32 gd0 = (d0 << 16) >> 24;
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u32 gd1 = (d1 << 16) >> 24;
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u32 rd0 = (d0 >> 16);
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u32 rd1 = (d1 >> 16);
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rd0 = DIV_BY_5[rd0]; rd1 = DIV_BY_5[rd1];
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gd0 = DIV_BY_5[gd0]; gd1 = DIV_BY_5[gd1];
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bd0 = DIV_BY_5[bd0]; bd1 = DIV_BY_5[bd1];
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u32 d10 = 0x80008000 | (rd1 << 26) | (gd1 << 21) | (bd1 << 16) | (rd0 << 10) | (gd0 << 5) | bd0;
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((u32*)dest)[0] = d10;
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u32 d2 = 2*s2 + 2*s3 + s3;
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u32 d3 = s3 + 4*s4;
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u32 bd2 = (d2 << 24) >> 24;
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u32 bd3 = (d3 << 24) >> 24;
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u32 gd2 = (d2 << 16) >> 24;
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u32 gd3 = (d3 << 16) >> 24;
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u32 rd2 = (d2 >> 16);
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u32 rd3 = (d3 >> 16);
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rd2 = DIV_BY_5[rd2]; rd3 = DIV_BY_5[rd3];
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gd2 = DIV_BY_5[gd2]; gd3 = DIV_BY_5[gd3];
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bd2 = DIV_BY_5[bd2]; bd3 = DIV_BY_5[bd3];
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u32 d32 = 0x80008000 | (rd3 << 26) | (gd3 << 21) | (bd3 << 16) | (rd2 << 10) | (gd2 << 5) | bd2;
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((u32*)dest)[1] = d32;
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}
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// Can't work in place
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#ifdef PERFECT_5_TO_4_RESCALING
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static inline void Rescale_320xPAL8Scanline_To_256x1555Scanline(u16* dest, const u8* src, const u32* palette)
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{
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ComputeDivBy5TableIFN();
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for(size_t i=0; i<64; ++i)
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{
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u32 s0 = palette[src[5*i+0]];
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u32 s1 = palette[src[5*i+1]];
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u32 s2 = palette[src[5*i+2]];
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u32 s3 = palette[src[5*i+3]];
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u32 s4 = palette[src[5*i+4]];
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RescaleBlock_5x8888_To_4x1555(s0, s1, s2, s3, s4, dest+4*i);
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}
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}
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#else
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static inline void Rescale_320xPAL8Scanline_To_256x1555Scanline(u16* dest, const u8* src, const u16* palette)
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{
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for(size_t i=0; i<64; ++i)
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{
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u16 s0 = palette[src[5*i+0]];
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u16 s1 = palette[src[5*i+1]];
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u16 s2 = palette[src[5*i+2]];
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u16 s3 = palette[src[5*i+3]];
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u16 s4 = palette[src[5*i+4]];
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RescaleBlock_5x1555_To_4x1555(s0, s1, s2, s3, s4, dest+4*i);
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}
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}
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#endif
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// Can work in place, because it's a contraction
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static inline void Rescale_320x1555Scanline_To_256x1555Scanline(u16* dest, const u16* src)
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{
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ComputeDivBy5TableIFN();
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for(size_t i=0; i<64; ++i)
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{
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u16 s0 = src[5*i+0];
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u16 s1 = src[5*i+1];
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u16 s2 = src[5*i+2];
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u16 s3 = src[5*i+3];
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u16 s4 = src[5*i+4];
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RescaleBlock_5x1555_To_4x1555(s0, s1, s2, s3, s4, dest+4*i);
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}
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}
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|
||||
#ifdef PERFECT_5_TO_4_RESCALING
|
||||
void Rescale_320x256xPAL8_To_256x256x1555(u16* dest, const u8* src, const u16* palette, int destStride, int srcStride)
|
||||
{
|
||||
u32 fastRam[768];
|
||||
|
||||
// Palette lookup -> 0_888
|
||||
for(size_t i=0; i<256; ++i)
|
||||
{
|
||||
u32 col = palette[i];
|
||||
u32 result = col & 0x0000001F;
|
||||
result |= (col << 3) & 0x00001F00;
|
||||
result |= (col << 6) & 0x001F0000;
|
||||
|
||||
fastRam[i] = result;
|
||||
}
|
||||
|
||||
for(size_t i=0; i<200; ++i)
|
||||
{
|
||||
Rescale_320xPAL8Scanline_To_256x1555Scanline(dest + i*destStride, src + i *srcStride, fastRam);
|
||||
}
|
||||
}
|
||||
#else
|
||||
void Rescale_320x256xPAL8_To_256x256x1555(u16* dest, const u8* src, const u16* palette, int destStride, int srcStride)
|
||||
{
|
||||
u16 fastRam[256];
|
||||
for(size_t i=0; i<128; ++i)
|
||||
((u32*)fastRam)[i] = ((const u32*)palette)[i];
|
||||
|
||||
for(size_t i=0; i<200; ++i)
|
||||
{
|
||||
Rescale_320xPAL8Scanline_To_256x1555Scanline(dest + i*destStride, src + i *srcStride, fastRam);
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
void Rescale_320x256x1555_To_256x256x1555(u16* dest, const u16* src, int destStride, int srcStride)
|
||||
{
|
||||
for(size_t i=0; i<200; ++i)
|
||||
{
|
||||
Rescale_320x1555Scanline_To_256x1555Scanline(dest + i*destStride, src + i *srcStride);
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user