mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-12 03:56:20 +00:00
343 lines
9.4 KiB
C++
343 lines
9.4 KiB
C++
/* 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 3 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, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
#include "graphics/blit.h"
|
|
#include "graphics/surface.h"
|
|
#include "backends/platform/atari/dlmalloc.h"
|
|
|
|
#include <cstdlib> // malloc
|
|
#include <cstring> // memcpy, memset
|
|
#include <mint/cookie.h>
|
|
|
|
#include "backends/graphics/atari/atari-graphics-superblitter.h"
|
|
#include "common/textconsole.h" // error
|
|
|
|
// bits 26:0
|
|
#define SV_BLITTER_SRC1 ((volatile long*)0x80010058)
|
|
#define SV_BLITTER_SRC2 ((volatile long*)0x8001005C)
|
|
#define SV_BLITTER_DST ((volatile long*)0x80010060)
|
|
// The amount of bytes that are to be copied in a horizontal line, minus 1
|
|
#define SV_BLITTER_COUNT ((volatile long*)0x80010064)
|
|
// The amount of bytes that are to be added to the line start address after a line has been copied, in order to reach the next one
|
|
#define SV_BLITTER_SRC1_OFFSET ((volatile long*)0x80010068)
|
|
#define SV_BLITTER_SRC2_OFFSET ((volatile long*)0x8001006C)
|
|
#define SV_BLITTER_DST_OFFSET ((volatile long*)0x80010070)
|
|
// bits 11:0 - The amount of horizontal lines to do
|
|
#define SV_BLITTER_MASK_AND_LINES ((volatile long*)0x80010074)
|
|
// bit 0 - busy / start
|
|
// bits 4:1 - blit mode
|
|
#define SV_BLITTER_CONTROL ((volatile long*)0x80010078)
|
|
// bit 0 - empty (read only)
|
|
// bit 1 - full (read only)
|
|
// bits 31:0 - data (write only)
|
|
#define SV_BLITTER_FIFO ((volatile long*)0x80010080)
|
|
|
|
#ifdef USE_SV_BLITTER
|
|
static bool isSuperBlitterLocked;
|
|
|
|
static void syncSuperBlitter() {
|
|
// if externally locked, let the owner decide when to sync (unlock)
|
|
if (isSuperBlitterLocked)
|
|
return;
|
|
|
|
// while FIFO not empty...
|
|
if (superVidelFwVersion >= 9)
|
|
while (!(*SV_BLITTER_FIFO & 1));
|
|
// while busy blitting...
|
|
while (*SV_BLITTER_CONTROL & 1);
|
|
}
|
|
#endif
|
|
|
|
#ifdef USE_MOVE16
|
|
static inline bool hasMove16() {
|
|
long val;
|
|
static bool hasMove16 = Getcookie(C__CPU, &val) == C_FOUND && val >= 40;
|
|
return hasMove16;
|
|
}
|
|
#endif
|
|
|
|
void lockSuperBlitter() {
|
|
#ifdef USE_SV_BLITTER
|
|
assert(!isSuperBlitterLocked);
|
|
|
|
isSuperBlitterLocked = true;
|
|
#endif
|
|
}
|
|
|
|
void unlockSuperBlitter() {
|
|
#ifdef USE_SV_BLITTER
|
|
assert(isSuperBlitterLocked);
|
|
|
|
isSuperBlitterLocked = false;
|
|
if (hasSuperVidel())
|
|
syncSuperBlitter();
|
|
#endif
|
|
}
|
|
|
|
// see atari-graphics.cpp
|
|
extern bool g_unalignedPitch;
|
|
extern mspace g_mspace;
|
|
|
|
namespace Graphics {
|
|
|
|
constexpr size_t ALIGN = 16; // 16 bytes
|
|
|
|
// hijack surface overrides here as well as these are tightly related
|
|
// to the blitting routine below
|
|
void Surface::create(int16 width, int16 height, const PixelFormat &f) {
|
|
assert(width >= 0 && height >= 0);
|
|
free();
|
|
|
|
w = width;
|
|
h = height;
|
|
format = f;
|
|
// align pitch to a 16-byte boundary for a possible C2P conversion
|
|
pitch = g_unalignedPitch
|
|
? w * format.bytesPerPixel
|
|
: (w * format.bytesPerPixel + ALIGN - 1) & (-ALIGN);
|
|
|
|
if (width && height) {
|
|
#ifdef USE_SV_BLITTER
|
|
if (g_mspace) {
|
|
pixels = mspace_calloc(g_mspace, height * pitch, f.bytesPerPixel);
|
|
|
|
if (!pixels)
|
|
error("Not enough memory to allocate a surface");
|
|
else if (pixels <= (void *)0xA0000000)
|
|
warning("SuperVidel surface allocated in regular memory");
|
|
} else {
|
|
#else
|
|
{
|
|
#endif
|
|
pixels = ::calloc(height * pitch, f.bytesPerPixel);
|
|
if (!pixels)
|
|
error("Not enough memory to allocate a surface");
|
|
else
|
|
assert(((uintptr)pixels & (ALIGN - 1)) == 0);
|
|
}
|
|
}
|
|
}
|
|
|
|
void Surface::free() {
|
|
#ifdef USE_SV_BLITTER
|
|
if (g_mspace)
|
|
mspace_free(g_mspace, pixels);
|
|
else
|
|
#endif
|
|
if (pixels)
|
|
::free(pixels);
|
|
|
|
pixels = nullptr;
|
|
w = h = pitch = 0;
|
|
format = PixelFormat();
|
|
}
|
|
|
|
// Function to blit a rect (version optimized for Atari Falcon with SuperVidel's SuperBlitter)
|
|
void copyBlit(byte *dst, const byte *src,
|
|
const uint dstPitch, const uint srcPitch,
|
|
const uint w, const uint h,
|
|
const uint bytesPerPixel) {
|
|
if (dst == src)
|
|
return;
|
|
|
|
#ifdef USE_SV_BLITTER
|
|
if (((uintptr)src & 0xFF000000) >= 0xA0000000 && ((uintptr)dst & 0xFF000000) >= 0xA0000000) {
|
|
if (superVidelFwVersion >= 9) {
|
|
*SV_BLITTER_FIFO = (long)src; // SV_BLITTER_SRC1
|
|
*SV_BLITTER_FIFO = 0x00000000; // SV_BLITTER_SRC2
|
|
*SV_BLITTER_FIFO = (long)dst; // SV_BLITTER_DST
|
|
*SV_BLITTER_FIFO = w * bytesPerPixel - 1; // SV_BLITTER_COUNT
|
|
*SV_BLITTER_FIFO = srcPitch; // SV_BLITTER_SRC1_OFFSET
|
|
*SV_BLITTER_FIFO = 0x00000000; // SV_BLITTER_SRC2_OFFSET
|
|
*SV_BLITTER_FIFO = dstPitch; // SV_BLITTER_DST_OFFSET
|
|
*SV_BLITTER_FIFO = h; // SV_BLITTER_MASK_AND_LINES
|
|
*SV_BLITTER_FIFO = 0x01; // SV_BLITTER_CONTROL
|
|
} else {
|
|
// make sure the blitter is idle
|
|
while (*SV_BLITTER_CONTROL & 1);
|
|
|
|
*SV_BLITTER_SRC1 = (long)src;
|
|
*SV_BLITTER_SRC2 = 0x00000000;
|
|
*SV_BLITTER_DST = (long)dst;
|
|
*SV_BLITTER_COUNT = w * bytesPerPixel - 1;
|
|
*SV_BLITTER_SRC1_OFFSET = srcPitch;
|
|
*SV_BLITTER_SRC2_OFFSET = 0x00000000;
|
|
*SV_BLITTER_DST_OFFSET = dstPitch;
|
|
*SV_BLITTER_MASK_AND_LINES = h;
|
|
*SV_BLITTER_CONTROL = 0x01;
|
|
}
|
|
|
|
syncSuperBlitter();
|
|
} else
|
|
#endif
|
|
if (dstPitch == srcPitch && dstPitch == (w * bytesPerPixel)) {
|
|
#ifdef USE_MOVE16
|
|
if (hasMove16() && ((uintptr)src & (ALIGN - 1)) == 0 && ((uintptr)dst & (ALIGN - 1)) == 0) {
|
|
__asm__ volatile(
|
|
" move.l %2,%%d0\n"
|
|
" lsr.l #4,%%d0\n"
|
|
" beq.b 3f\n"
|
|
|
|
" moveq #0x0f,%%d1\n"
|
|
" and.l %%d0,%%d1\n"
|
|
" neg.l %%d1\n"
|
|
" lsr.l #4,%%d0\n"
|
|
" jmp (2f,%%pc,%%d1.l*4)\n"
|
|
"1:\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
"2:\n"
|
|
" dbra %%d0,1b\n"
|
|
// handle also the unlikely case when 'dstPitch'
|
|
// is not divisible by 16 but 'src' and 'dst' are
|
|
"3:\n"
|
|
" moveq #0x0f,%%d0\n"
|
|
" and.l %2,%%d0\n"
|
|
" neg.l %%d0\n"
|
|
" jmp (4f,%%pc,%%d0.l*2)\n"
|
|
// only 15x move.b as 16 would be handled above
|
|
" move.b (%0)+,(%1)+\n"
|
|
" move.b (%0)+,(%1)+\n"
|
|
" move.b (%0)+,(%1)+\n"
|
|
" move.b (%0)+,(%1)+\n"
|
|
" move.b (%0)+,(%1)+\n"
|
|
" move.b (%0)+,(%1)+\n"
|
|
" move.b (%0)+,(%1)+\n"
|
|
" move.b (%0)+,(%1)+\n"
|
|
" move.b (%0)+,(%1)+\n"
|
|
" move.b (%0)+,(%1)+\n"
|
|
" move.b (%0)+,(%1)+\n"
|
|
" move.b (%0)+,(%1)+\n"
|
|
" move.b (%0)+,(%1)+\n"
|
|
" move.b (%0)+,(%1)+\n"
|
|
" move.b (%0)+,(%1)+\n"
|
|
"4:\n"
|
|
: // outputs
|
|
: "a"(src), "a"(dst), "g"(dstPitch * h) // inputs
|
|
: "d0", "d1", "cc" AND_MEMORY
|
|
);
|
|
} else {
|
|
#else
|
|
{
|
|
#endif
|
|
memcpy(dst, src, dstPitch * h);
|
|
}
|
|
} else {
|
|
#ifdef USE_MOVE16
|
|
if (hasMove16() && ((uintptr)src & (ALIGN - 1)) == 0 && ((uintptr)dst & (ALIGN - 1)) == 0
|
|
&& (srcPitch & (ALIGN - 1)) == 0 && (dstPitch & (ALIGN - 1)) == 0) {
|
|
__asm__ volatile(
|
|
" move.l %2,%%d0\n"
|
|
|
|
" moveq #0x0f,%%d1\n"
|
|
" and.l %%d0,%%d1\n"
|
|
" neg.l %%d1\n"
|
|
" lea (4f,%%pc,%%d1.l*2),%%a0\n"
|
|
" move.l %%a0,%%a1\n"
|
|
|
|
" lsr.l #4,%%d0\n"
|
|
" beq.b 3f\n"
|
|
|
|
" moveq #0x0f,%%d1\n"
|
|
" and.l %%d0,%%d1\n"
|
|
" neg.l %%d1\n"
|
|
" lea (2f,%%pc,%%d1.l*4),%%a0\n"
|
|
" lsr.l #4,%%d0\n"
|
|
" move.l %%d0,%%d1\n"
|
|
"0:\n"
|
|
" move.l %%d1,%%d0\n"
|
|
" jmp (%%a0)\n"
|
|
"1:\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
" move16 (%0)+,(%1)+\n"
|
|
"2:\n"
|
|
" dbra %%d0,1b\n"
|
|
// handle (w * bytesPerPixel) % 16
|
|
"3:\n"
|
|
" jmp (%%a1)\n"
|
|
// only 15x move.b as 16 would be handled above
|
|
" move.b (%0)+,(%1)+\n"
|
|
" move.b (%0)+,(%1)+\n"
|
|
" move.b (%0)+,(%1)+\n"
|
|
" move.b (%0)+,(%1)+\n"
|
|
" move.b (%0)+,(%1)+\n"
|
|
" move.b (%0)+,(%1)+\n"
|
|
" move.b (%0)+,(%1)+\n"
|
|
" move.b (%0)+,(%1)+\n"
|
|
" move.b (%0)+,(%1)+\n"
|
|
" move.b (%0)+,(%1)+\n"
|
|
" move.b (%0)+,(%1)+\n"
|
|
" move.b (%0)+,(%1)+\n"
|
|
" move.b (%0)+,(%1)+\n"
|
|
" move.b (%0)+,(%1)+\n"
|
|
" move.b (%0)+,(%1)+\n"
|
|
"4:\n"
|
|
" add.l %4,%1\n"
|
|
" add.l %5,%0\n"
|
|
" dbra %3,0b\n"
|
|
: // outputs
|
|
: "a"(src), "a"(dst), "g"(w * bytesPerPixel), "d"(h - 1),
|
|
"g"(dstPitch - w * bytesPerPixel), "g"(srcPitch - w * bytesPerPixel) // inputs
|
|
: "d0", "d1", "a0", "a1", "cc" AND_MEMORY
|
|
);
|
|
} else {
|
|
#else
|
|
{
|
|
#endif
|
|
for (uint i = 0; i < h; ++i) {
|
|
memcpy(dst, src, w * bytesPerPixel);
|
|
dst += dstPitch;
|
|
src += srcPitch;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
} // End of namespace Graphics
|