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BizHawk/libmupen64plus/mupen64plus-video-glide64/src/TexLoad16b.h

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/*
* Glide64 - Glide video plugin for Nintendo 64 emulators.
* Copyright (c) 2002 Dave2001
* Copyright (c) 2008 Günther <guenther.emu@freenet.de>
*
* 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
* 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., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA
*/
//****************************************************************
//
// Glide64 - Glide Plugin for Nintendo 64 emulators (tested mostly with Project64)
// Project started on December 29th, 2001
//
// To modify Glide64:
// * Write your name and (optional)email, commented by your work, so I know who did it, and so that you can find which parts you modified when it comes time to send it to me.
// * Do NOT send me the whole project or file that you modified. Take out your modified code sections, and tell me where to put them. If people sent the whole thing, I would have many different versions, but no idea how to combine them all.
//
// Official Glide64 development channel: #Glide64 on EFnet
//
// Original author: Dave2001 (Dave2999@hotmail.com)
// Other authors: Gonetz, Gugaman
//
//****************************************************************
//****************************************************************
// Size: 2, Format: 0
DWORD Load16bRGBA (unsigned char * dst, unsigned char * src, int wid_64, int height, int line, int real_width, int tile)
{
if (wid_64 < 1) wid_64 = 1;
if (height < 1) height = 1;
int ext = (real_width - (wid_64 << 2)) << 1;
#if !defined(__GNUC__) && !defined(NO_ASM)
__asm {
mov esi,dword ptr [src]
mov edi,dword ptr [dst]
mov ecx,dword ptr [height]
y_loop:
push ecx
mov ecx,dword ptr [wid_64]
x_loop:
mov eax,dword ptr [esi] // read both pixels
add esi,4
bswap eax
mov edx,eax
ror ax,1
ror eax,16
ror ax,1
mov dword ptr [edi],eax
add edi,4
// * copy
mov eax,dword ptr [esi] // read both pixels
add esi,4
bswap eax
mov edx,eax
ror ax,1
ror eax,16
ror ax,1
mov dword ptr [edi],eax
add edi,4
// *
dec ecx
jnz x_loop
pop ecx
dec ecx
jz end_y_loop
push ecx
add esi,dword ptr [line]
add edi,dword ptr [ext]
mov ecx,dword ptr [wid_64]
x_loop_2:
mov eax,dword ptr [esi+4] // read both pixels
bswap eax
mov edx,eax
ror ax,1
ror eax,16
ror ax,1
mov dword ptr [edi],eax
add edi,4
// * copy
mov eax,dword ptr [esi] // read both pixels
add esi,8
bswap eax
mov edx,eax
ror ax,1
ror eax,16
ror ax,1
mov dword ptr [edi],eax
add edi,4
// *
dec ecx
jnz x_loop_2
add esi,dword ptr [line]
add edi,dword ptr [ext]
pop ecx
dec ecx
jnz y_loop
end_y_loop:
}
#elif !defined(NO_ASM)
//printf("Load16bRGBA\n");
long lTemp, lHeight = (long) height;
asm volatile (
"y_loop7: \n"
"mov %[c], %[temp] \n"
"mov %[wid_64], %%ecx \n"
"x_loop7: \n"
"mov (%[src]), %%eax \n" // read both pixels
"add $4, %[src] \n"
"bswap %%eax \n"
"mov %%eax, %%edx \n"
"ror $1, %%ax \n"
"ror $16, %%eax \n"
"ror $1, %%ax \n"
"mov %%eax, (%[dst]) \n"
"add $4, %[dst] \n"
// * copy
"mov (%[src]), %%eax \n" // read both pixels
"add $4, %[src] \n"
"bswap %%eax \n"
"mov %%eax, %%edx \n"
"ror $1, %%ax \n"
"ror $16, %%eax \n"
"ror $1, %%ax \n"
"mov %%eax, (%[dst]) \n"
"add $4, %[dst] \n"
// *
"dec %%ecx \n"
"jnz x_loop7 \n"
"mov %[temp], %[c] \n"
"dec %%ecx \n"
"jz end_y_loop7 \n"
"mov %[c], %[temp] \n"
"add %[line], %[src] \n"
"add %[ext], %[dst] \n"
"mov %[wid_64], %%ecx \n"
"x_loop_27: \n"
"mov 4(%[src]), %%eax \n" // read both pixels
"bswap %%eax \n"
"mov %%eax, %%edx \n"
"ror $1, %%ax \n"
"ror $16, %%eax \n"
"ror $1, %%ax \n"
"mov %%eax, (%[dst]) \n"
"add $4, %[dst] \n"
// * copy
"mov (%[src]), %%eax \n" // read both pixels
"add $8, %[src] \n"
"bswap %%eax \n"
"mov %%eax, %%edx \n"
"ror $1, %%ax \n"
"ror $16, %%eax \n"
"ror $1, %%ax \n"
"mov %%eax, (%[dst]) \n"
"add $4, %[dst] \n"
// *
"dec %%ecx \n"
"jnz x_loop_27 \n"
"add %[line], %[src] \n"
"add %[ext], %[dst] \n"
"mov %[temp], %[c] \n"
"dec %%ecx \n"
"jnz y_loop7 \n"
"end_y_loop7: \n"
: [temp]"=m"(lTemp), [src]"+S"(src), [dst]"+D"(dst), [c]"+c"(lHeight)
: [wid_64] "g" (wid_64), [line] "g" ((uintptr_t)line), [ext] "g" ((uintptr_t)ext)
: "memory", "cc", "eax", "edx"
);
#endif
return (1 << 16) | GR_TEXFMT_ARGB_1555;
}
//****************************************************************
// Size: 2, Format: 3
//
// ** by Gugaman/Dave2001 **
DWORD Load16bIA (unsigned char * dst, unsigned char * src, int wid_64, int height, int line, int real_width, int tile)
{
if (wid_64 < 1) wid_64 = 1;
if (height < 1) height = 1;
int ext = (real_width - (wid_64 << 2)) << 1;
#if !defined(__GNUC__) && !defined(NO_ASM)
__asm {
mov esi,dword ptr [src]
mov edi,dword ptr [dst]
mov ecx,dword ptr [height]
y_loop:
push ecx
mov ecx,dword ptr [wid_64]
x_loop:
mov eax,dword ptr [esi] // read both pixels
add esi,4
mov dword ptr [edi],eax
add edi,4
// * copy
mov eax,dword ptr [esi] // read both pixels
add esi,4
mov dword ptr [edi],eax
add edi,4
// *
dec ecx
jnz x_loop
pop ecx
dec ecx
jz end_y_loop
push ecx
add esi,dword ptr [line]
add edi,dword ptr [ext]
mov ecx,dword ptr [wid_64]
x_loop_2:
mov eax,dword ptr [esi+4] // read both pixels
mov dword ptr [edi],eax
add edi,4
// * copy
mov eax,dword ptr [esi] // read both pixels
add esi,8
mov dword ptr [edi],eax
add edi,4
// *
dec ecx
jnz x_loop_2
add esi,dword ptr [line]
add edi,dword ptr [ext]
pop ecx
dec ecx
jnz y_loop
end_y_loop:
}
#elif !defined(NO_ASM)
//printf("Load16bIA\n");
long lTemp, lHeight = (long) height;
asm volatile (
"y_loop8: \n"
"mov %[c], %[temp] \n"
"mov %[wid_64], %%ecx \n"
"x_loop8: \n"
"mov (%[src]), %%eax \n" // read both pixels
"add $4, %[src] \n"
"mov %%eax, (%[dst]) \n"
"add $4, %[dst] \n"
// * copy
"mov (%[src]), %%eax \n" // read both pixels
"add $4, %[src] \n"
"mov %%eax, (%[dst]) \n"
"add $4, %[dst] \n"
// *
"dec %%ecx \n"
"jnz x_loop8 \n"
"mov %[temp], %[c] \n"
"dec %%ecx \n"
"jz end_y_loop8 \n"
"mov %[c], %[temp] \n"
"add %[line], %[src] \n"
"add %[ext], %[dst] \n"
"mov %[wid_64], %%ecx \n"
"x_loop_28: \n"
"mov 4(%[src]), %%eax \n" // read both pixels
"mov %%eax, (%[dst]) \n"
"add $4, %[dst] \n"
// * copy
"mov (%[src]), %%eax \n" // read both pixels
"add $8, %[src] \n"
"mov %%eax, (%[dst]) \n"
"add $4, %[dst] \n"
// *
"dec %%ecx \n"
"jnz x_loop_28 \n"
"add %[line], %[src] \n"
"add %[ext], %[dst] \n"
"mov %[temp], %[c] \n"
"dec %%ecx \n"
"jnz y_loop8 \n"
"end_y_loop8: \n"
: [temp]"=m"(lTemp), [src]"+S"(src), [dst]"+D"(dst), [c]"+c"(lHeight)
: [wid_64] "g" (wid_64), [line] "g" ((uintptr_t)line), [ext] "g" ((uintptr_t)ext)
: "memory", "cc", "eax"
);
#endif
return (1 << 16) | GR_TEXFMT_ALPHA_INTENSITY_88;
}
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