aboutsummaryrefslogtreecommitdiff
path: root/backends/platform/ds/arm9/source/blitters.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'backends/platform/ds/arm9/source/blitters.cpp')
-rw-r--r--backends/platform/ds/arm9/source/blitters.cpp402
1 files changed, 0 insertions, 402 deletions
diff --git a/backends/platform/ds/arm9/source/blitters.cpp b/backends/platform/ds/arm9/source/blitters.cpp
deleted file mode 100644
index 9af3c5d611..0000000000
--- a/backends/platform/ds/arm9/source/blitters.cpp
+++ /dev/null
@@ -1,402 +0,0 @@
-/* ScummVM - Graphic Adventure Engine
- *
- * ScummVM is the legal property of its developers, whose names
- * are too numerous to list here. Please refer to the COPYRIGHT
- * file distributed with this source distribution.
- *
- * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- *
- */
-
-#include "stdafx.h"
-#include "blitters.h"
-#define CHARSET_MASK_TRANSPARENCY 253
-
-//#define PERFECT_5_TO_4_RESCALING
-
-namespace DS {
-
-void asmDrawStripToScreen(int height, int width, byte const* text, byte const* src, byte* dst,
- int vsPitch, int vmScreenWidth, int textSurfacePitch) {
-
-
- if (height <= 0) height = 1;
- if (width < 4) return;
-
-
- width &= ~4;
-// src = (const byte *) (((int) (src)) & (~4));
-// dst = (byte *) (((int) (dst)) & (~4));
-// text = (const byte *) (((int) (text)) & (~4));
-
- asm ( "mov r5, %0\n" // Height
- "yLoop:\n"
- "mov r3, #0\n" // X pos
-
- "xLoop:\n"
-
- "ldr r4, [%2, r3]\n" // Load text layer word
- "cmp r4, %5\n"
- "bne singleByteCompare\n"
- "ldr r4, [%3, r3]\n"
- "str r4, [%4, r3]\n"
- "add r3, r3, #4\n"
- "cmp r3, %1\n" // x == width?
- "blt xLoop\n"
-
- "add %2, %2, %8\n" // src += vs->pitch
- "add %3, %3, %6\n" // dst += _vm->_screenWidth
- "add %4, %4, %7\n" // text += _textSurface.pitch
- "sub r5, r5, #1\n" // y -= 1
- "cmp r5, #0\n" // y == 0?
- "bne yLoop\n"
- "b end\n"
-
-
- "singleByteCompare:\n"
- "ldrb r4, [%2, r3]\n" // Load text byte
- "cmps r4, %5, lsr #24\n" // Compare with mask
- "strneb r4, [%4, r3]\n" // Store if not equal
- "ldreqb r4, [%3, r3]\n" // Otherwise Load src byte
- "streqb r4, [%4, r3]\n" // Store it
- "add r3, r3, #1\n"
-
- "ldrb r4, [%2, r3]\n" // Load text byte
- "cmps r4, %5, lsr #24\n" // Compare with mask
- "strneb r4, [%4, r3]\n" // Store if not equal
- "ldreqb r4, [%3, r3]\n" // Otherwise Load src byte
- "streqb r4, [%4, r3]\n" // Store it
- "add r3, r3, #1\n"
-
- "ldrb r4, [%2, r3]\n" // Load text byte
- "cmps r4, %5, lsr #24\n" // Compare with mask
- "strneb r4, [%4, r3]\n" // Store if not equal
- "ldreqb r4, [%3, r3]\n" // Otherwise Load src byte
- "streqb r4, [%4, r3]\n" // Store it
- "add r3, r3, #1\n"
-
- "ldrb r4, [%2, r3]\n" // Load text byte
- "cmps r4, %5, lsr #24\n" // Compare with mask
- "strneb r4, [%4, r3]\n" // Store if not equal
- "ldreqb r4, [%3, r3]\n" // Otherwise Load src byte
- "streqb r4, [%4, r3]\n" // Store it
- "add r3, r3, #1\n"
-
- "cmps r3, %1\n" // x == width?
- "blt xLoop\n" // Repeat
- "add %2, %2, %8\n" // src += vs->pitch
- "add %3, %3, %6\n" // dst += _vm->_screenWidth
- "add %4, %4, %7\n" // text += _textSurface.pitch
- "sub r5, r5, #1\n" // y -= 1
- "cmp r5, #0\n" // y == 0?
- "bne yLoop\n"
-
- "end:\n"
- : /* no output registers */
- : "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)),
- "r" (vsPitch), "r" (vmScreenWidth), "r" (textSurfacePitch)
- : "r5", "r3", "r4", "%2", "%3", "%4", "memory");
-}
-
-
-
-void asmCopy8Col(byte* dst, int dstPitch, const byte* src, int height) {
- asm("ands r0, %3, #1\n"
- "addne %3, %3, #1\n"
- "bne roll2\n"
-
- "yLoop2:\n"
- "ldr r0, [%2, #0]\n"
- "str r0, [%0, #0]\n"
- "ldr r0, [%2, #4]\n"
- "str r0, [%0, #4]\n"
- "add %0, %0, %1\n"
- "add %2, %2, %1\n"
- "roll2:\n"
- "ldr r0, [%2, #0]\n"
- "str r0, [%0, #0]\n"
- "ldr r0, [%2, #4]\n"
- "str r0, [%0, #4]\n"
- "add %0, %0, %1\n"
- "add %2, %2, %1\n"
- "subs %3, %3, #2\n"
- "bne yLoop2\n"
-
- : /* no output registers */
- : "r" (dst), "r" (dstPitch), "r" (src), "r" (height)
- : "r0", "%0", "%2", "%3");
-}
-
-static bool isDivBy5Ready = false;
-static u32 DIV_BY_5[160];
-
-void ComputeDivBy5TableIFN()
-{
- if (isDivBy5Ready)
- return;
- isDivBy5Ready = true;
-
- for(int i=0; i<160; ++i)
- {
- DIV_BY_5[i] = (2*i+5)/10;
- }
-}
-
-#ifdef PERFECT_5_TO_4_RESCALING
-static inline void RescaleBlock_5x1555_To_4x1555( u16 s0, u16 s1, u16 s2, u16 s3, u16 s4,
- u16* dest)
-{
- u32 bs0 = s0 & 0x1F;
- u32 bs1 = s1 & 0x1F;
- u32 bs2 = s2 & 0x1F;
- u32 bs3 = s3 & 0x1F;
- u32 bs4 = s4 & 0x1F;
-
-#if 0
- u32 gs0 = (s0 >> 5) & 0x1F;
- u32 gs1 = (s1 >> 5) & 0x1F;
- u32 gs2 = (s2 >> 5) & 0x1F;
- u32 gs3 = (s3 >> 5) & 0x1F;
- u32 gs4 = (s4 >> 5) & 0x1F;
-
- u32 rs0 = (s0 >> 10) & 0x1F;
- u32 rs1 = (s1 >> 10) & 0x1F;
- u32 rs2 = (s2 >> 10) & 0x1F;
- u32 rs3 = (s3 >> 10) & 0x1F;
- u32 rs4 = (s4 >> 10) & 0x1F;
-#else
- // The compiler absolutely wants to use 0x1F as an immediate, which makes it unable to fold the shift during the and
- u32 mask = 0x1F;
- u32 gs0, gs1, gs2, gs3, gs4;
- asm("and %0, %2, %1, lsr #5" : "=r"(gs0) : "r"(s0), "r"(mask) : );
- asm("and %0, %2, %1, lsr #5" : "=r"(gs1) : "r"(s1), "r"(mask) : );
- asm("and %0, %2, %1, lsr #5" : "=r"(gs2) : "r"(s2), "r"(mask) : );
- asm("and %0, %2, %1, lsr #5" : "=r"(gs3) : "r"(s3), "r"(mask) : );
- asm("and %0, %2, %1, lsr #5" : "=r"(gs4) : "r"(s4), "r"(mask) : );
- u32 rs0, rs1, rs2, rs3, rs4;
- asm("and %0, %2, %1, lsr #10" : "=r"(rs0) : "r"(s0), "r"(mask) : );
- asm("and %0, %2, %1, lsr #10" : "=r"(rs1) : "r"(s1), "r"(mask) : );
- asm("and %0, %2, %1, lsr #10" : "=r"(rs2) : "r"(s2), "r"(mask) : );
- asm("and %0, %2, %1, lsr #10" : "=r"(rs3) : "r"(s3), "r"(mask) : );
- asm("and %0, %2, %1, lsr #10" : "=r"(rs4) : "r"(s4), "r"(mask) : );
-#endif
-
- u32 rd0 = 4*rs0 + rs1;
- u32 rd1 = 2*rs1 + rs1 + 2*rs2;
- u32 rd2 = 2*rs2 + 2*rs3 + rs3;
- u32 rd3 = rs3 + 4*rs4;
-
- u32 gd0 = 4*gs0 + gs1;
- u32 gd1 = 2*gs1 + gs1 + 2*gs2;
- u32 gd2 = 2*gs2 + 2*gs3 + gs3;
- u32 gd3 = gs3 + 4*gs4;
-
- u32 bd0 = 4*bs0 + bs1;
- u32 bd1 = 2*bs1 + bs1 + 2*bs2;
- u32 bd2 = 2*bs2 + 2*bs3 + bs3;
- u32 bd3 = bs3 + 4*bs4;
-
-#if 0
- // Offsetting for correct rounding
- rd0 = rd0*2+5; rd1 = rd1*2+5; rd2 = rd2*2+5; rd3 = rd3*2+5;
- gd0 = gd0*2+5; gd1 = gd1*2+5; gd2 = gd2*2+5; gd3 = gd3*2+5;
- bd0 = bd0*2+5; bd1 = bd1*2+5; bd2 = bd2*2+5; bd3 = bd3*2+5;
-
- rd0 = (rd0 * 51) >> 9; rd1 = (rd1 * 51) >> 9; rd2 = (rd2 * 51) >> 9; rd3 = (rd3 * 51) >> 9;
- gd0 = (gd0 * 51) >> 9; gd1 = (gd1 * 51) >> 9; gd2 = (gd2 * 51) >> 9; gd3 = (gd3 * 51) >> 9;
- bd0 = (bd0 * 51) >> 9; bd1 = (bd1 * 51) >> 9; bd2 = (bd2 * 51) >> 9; bd3 = (bd3 * 51) >> 9;
-#else
- rd0 = DIV_BY_5[rd0]; rd1 = DIV_BY_5[rd1]; rd2 = DIV_BY_5[rd2]; rd3 = DIV_BY_5[rd3];
- gd0 = DIV_BY_5[gd0]; gd1 = DIV_BY_5[gd1]; gd2 = DIV_BY_5[gd2]; gd3 = DIV_BY_5[gd3];
- bd0 = DIV_BY_5[bd0]; bd1 = DIV_BY_5[bd1]; bd2 = DIV_BY_5[bd2]; bd3 = DIV_BY_5[bd3];
-#endif
-
- u32 d10 = 0x80008000 | (rd1 << 26) | (gd1 << 21) | (bd1 << 16) | (rd0 << 10) | (gd0 << 5) | bd0;
- u32 d32 = 0x80008000 | (rd3 << 26) | (gd3 << 21) | (bd3 << 16) | (rd2 << 10) | (gd2 << 5) | bd2;
-
- ((u32*)dest)[0] = d10;
- ((u32*)dest)[1] = d32;
-}
-#else
-static inline void RescaleBlock_5x1555_To_4x1555( u16 s0, u16 s1, u16 s2, u16 s3, u16 s4,
- u16* dest)
-{
- u32 ar0bs0 = s0 & 0x7C1F;
- u32 ar0bs1 = s1 & 0x7C1F;
- u32 ar0bs2 = s2 & 0x7C1F;
- u32 ar0bs3 = s3 & 0x7C1F;
- u32 ar0bs4 = s4 & 0x7C1F;
-
- u32 gs0 = s0 & 0x03E0;
- u32 gs1 = s1 & 0x03E0;
- u32 gs2 = s2 & 0x03E0;
- u32 gs3 = s3 & 0x03E0;
- u32 gs4 = s4 & 0x03E0;
-
- u32 ar0bd0 = (3*ar0bs0 + ar0bs1) >> 2;
- u32 ar0bd1 = ( ar0bs1 + ar0bs2) >> 1;
- u32 ar0bd2 = ( ar0bs2 + ar0bs3) >> 1;
- u32 ar0bd3 = ( ar0bs3 + 3*ar0bs4) >> 2;
-
- u32 gd0 = (3*gs0 + gs1) >> 2;
- u32 gd1 = ( gs1 + gs2) >> 1;
- u32 gd2 = ( gs2 + gs3) >> 1;
- u32 gd3 = ( gs3 + 3*gs4) >> 2;
-
- u32 d0 = (ar0bd0 & 0xFC1F) | (gd0 & 0x03E0);
- u32 d1 = (ar0bd1 & 0xFC1F) | (gd1 & 0x03E0);
- u32 d2 = (ar0bd2 & 0xFC1F) | (gd2 & 0x03E0);
- u32 d3 = (ar0bd3 & 0xFC1F) | (gd3 & 0x03E0);
-
- u32 d10 = 0x80008000 | (d1 << 16) | d0;
- u32 d32 = 0x80008000 | (d3 << 16) | d2;
-
- ((u32*)dest)[0] = d10;
- ((u32*)dest)[1] = d32;
-}
-#endif
-
-static inline void RescaleBlock_5x8888_To_4x1555( u32 s0, u32 s1, u32 s2, u32 s3, u32 s4,
- u16* dest)
-{
- u32 d0 = 4*s0 + s1;
- u32 d1 = 2*s1 + s1 + 2*s2;
-
- u32 bd0 = (d0 << 24) >> 24;
- u32 bd1 = (d1 << 24) >> 24;
- u32 gd0 = (d0 << 16) >> 24;
- u32 gd1 = (d1 << 16) >> 24;
- u32 rd0 = (d0 >> 16);
- u32 rd1 = (d1 >> 16);
-
- rd0 = DIV_BY_5[rd0]; rd1 = DIV_BY_5[rd1];
- gd0 = DIV_BY_5[gd0]; gd1 = DIV_BY_5[gd1];
- bd0 = DIV_BY_5[bd0]; bd1 = DIV_BY_5[bd1];
- u32 d10 = 0x80008000 | (rd1 << 26) | (gd1 << 21) | (bd1 << 16) | (rd0 << 10) | (gd0 << 5) | bd0;
- ((u32*)dest)[0] = d10;
-
- u32 d2 = 2*s2 + 2*s3 + s3;
- u32 d3 = s3 + 4*s4;
-
- u32 bd2 = (d2 << 24) >> 24;
- u32 bd3 = (d3 << 24) >> 24;
- u32 gd2 = (d2 << 16) >> 24;
- u32 gd3 = (d3 << 16) >> 24;
- u32 rd2 = (d2 >> 16);
- u32 rd3 = (d3 >> 16);
-
- rd2 = DIV_BY_5[rd2]; rd3 = DIV_BY_5[rd3];
- gd2 = DIV_BY_5[gd2]; gd3 = DIV_BY_5[gd3];
- bd2 = DIV_BY_5[bd2]; bd3 = DIV_BY_5[bd3];
- u32 d32 = 0x80008000 | (rd3 << 26) | (gd3 << 21) | (bd3 << 16) | (rd2 << 10) | (gd2 << 5) | bd2;
-
- ((u32*)dest)[1] = d32;
-}
-
-// Can't work in place
-#ifdef PERFECT_5_TO_4_RESCALING
-static inline void Rescale_320xPAL8Scanline_To_256x1555Scanline(u16* dest, const u8* src, const u32* palette)
-{
- ComputeDivBy5TableIFN();
-
- for(size_t i=0; i<64; ++i)
- {
- u32 s0 = palette[src[5*i+0]];
- u32 s1 = palette[src[5*i+1]];
- u32 s2 = palette[src[5*i+2]];
- u32 s3 = palette[src[5*i+3]];
- u32 s4 = palette[src[5*i+4]];
-
- RescaleBlock_5x8888_To_4x1555(s0, s1, s2, s3, s4, dest+4*i);
- }
-}
-#else
-static inline void Rescale_320xPAL8Scanline_To_256x1555Scanline(u16* dest, const u8* src, const u16* palette)
-{
- for(size_t i=0; i<64; ++i)
- {
- u16 s0 = palette[src[5*i+0]];
- u16 s1 = palette[src[5*i+1]];
- u16 s2 = palette[src[5*i+2]];
- u16 s3 = palette[src[5*i+3]];
- u16 s4 = palette[src[5*i+4]];
-
- RescaleBlock_5x1555_To_4x1555(s0, s1, s2, s3, s4, dest+4*i);
- }
-}
-#endif
-
-
-// Can work in place, because it's a contraction
-static inline void Rescale_320x1555Scanline_To_256x1555Scanline(u16* dest, const u16* src)
-{
- ComputeDivBy5TableIFN();
-
- for(size_t i=0; i<64; ++i)
- {
- u16 s0 = src[5*i+0];
- u16 s1 = src[5*i+1];
- u16 s2 = src[5*i+2];
- u16 s3 = src[5*i+3];
- u16 s4 = src[5*i+4];
-
- RescaleBlock_5x1555_To_4x1555(s0, s1, s2, s3, s4, dest+4*i);
- }
-}
-
-#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);
- }
-}
-
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-22 12:25:16 +0000