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/***************************************************************************
* Copyright (C) 2010 PCSX4ALL Team *
* Copyright (C) 2010 Unai *
* *
* 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., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA. *
***************************************************************************/
///////////////////////////////////////////////////////////////////////////////
// GPU internal sprite drawing functions
void gpuDrawS(PtrUnion packet, const PS gpuSpriteSpanDriver)
{
s32 x0, x1, y0, y1;
u32 u0, v0;
//NOTE: Must 11-bit sign-extend the whole sum here, not just packet X/Y,
// or sprites in 1st level of SkullMonkeys disappear when walking right.
// This now matches behavior of Mednafen and PCSX Rearmed's gpu_neon:
x0 = GPU_EXPANDSIGN(packet.S2[2] + gpu_unai.DrawingOffset[0]);
y0 = GPU_EXPANDSIGN(packet.S2[3] + gpu_unai.DrawingOffset[1]);
u32 w = packet.U2[6] & 0x3ff; // Max width is 1023
u32 h = packet.U2[7] & 0x1ff; // Max height is 511
x1 = x0 + w;
y1 = y0 + h;
s32 xmin, xmax, ymin, ymax;
xmin = gpu_unai.DrawingArea[0]; xmax = gpu_unai.DrawingArea[2];
ymin = gpu_unai.DrawingArea[1]; ymax = gpu_unai.DrawingArea[3];
u0 = packet.U1[8];
v0 = packet.U1[9];
s32 temp;
temp = ymin - y0;
if (temp > 0) { y0 = ymin; v0 += temp; }
if (y1 > ymax) y1 = ymax;
if (y1 <= y0) return;
temp = xmin - x0;
if (temp > 0) { x0 = xmin; u0 += temp; }
if (x1 > xmax) x1 = xmax;
x1 -= x0;
if (x1 <= 0) return;
gpu_unai.r5 = packet.U1[0] >> 3;
gpu_unai.g5 = packet.U1[1] >> 3;
gpu_unai.b5 = packet.U1[2] >> 3;
u16 *Pixel = &((u16*)gpu_unai.vram)[FRAME_OFFSET(x0, y0)];
const int li=gpu_unai.ilace_mask;
const int pi=(ProgressiveInterlaceEnabled()?(gpu_unai.ilace_mask+1):0);
const int pif=(ProgressiveInterlaceEnabled()?(gpu_unai.prog_ilace_flag?(gpu_unai.ilace_mask+1):0):1);
unsigned int tmode = gpu_unai.TEXT_MODE >> 5;
const u32 v0_mask = gpu_unai.TextureWindow[3];
u8* pTxt_base = (u8*)gpu_unai.TBA;
// Texture is accessed byte-wise, so adjust idx if 16bpp
if (tmode == 3) u0 <<= 1;
for (; y0<y1; ++y0) {
u8* pTxt = pTxt_base + ((v0 & v0_mask) * 2048);
if (!(y0&li) && (y0&pi)!=pif)
gpuSpriteSpanDriver(Pixel, x1, pTxt, u0);
Pixel += FRAME_WIDTH;
v0++;
}
}
#ifdef __arm__
#include "gpu_arm.h"
/* Notaz 4bit sprites optimization */
void gpuDrawS16(PtrUnion packet)
{
s32 x0, y0;
s32 u0, v0;
s32 xmin, xmax;
s32 ymin, ymax;
u32 h = 16;
//NOTE: Must 11-bit sign-extend the whole sum here, not just packet X/Y,
// or sprites in 1st level of SkullMonkeys disappear when walking right.
// This now matches behavior of Mednafen and PCSX Rearmed's gpu_neon:
x0 = GPU_EXPANDSIGN(packet.S2[2] + gpu_unai.DrawingOffset[0]);
y0 = GPU_EXPANDSIGN(packet.S2[3] + gpu_unai.DrawingOffset[1]);
xmin = gpu_unai.DrawingArea[0]; xmax = gpu_unai.DrawingArea[2];
ymin = gpu_unai.DrawingArea[1]; ymax = gpu_unai.DrawingArea[3];
u0 = packet.U1[8];
v0 = packet.U1[9];
if (x0 > xmax - 16 || x0 < xmin ||
((u0 | v0) & 15) || !(gpu_unai.TextureWindow[2] & gpu_unai.TextureWindow[3] & 8)) {
// send corner cases to general handler
packet.U4[3] = 0x00100010;
gpuDrawS(packet, gpuSpriteSpanFn<0x20>);
return;
}
if (y0 >= ymax || y0 <= ymin - 16)
return;
if (y0 < ymin) {
h -= ymin - y0;
v0 += ymin - y0;
y0 = ymin;
}
else if (ymax - y0 < 16)
h = ymax - y0;
draw_spr16_full(&gpu_unai.vram[FRAME_OFFSET(x0, y0)], &gpu_unai.TBA[FRAME_OFFSET(u0/4, v0)], gpu_unai.CBA, h);
}
#endif // __arm__
void gpuDrawT(PtrUnion packet, const PT gpuTileSpanDriver)
{
s32 x0, x1, y0, y1;
// This now matches behavior of Mednafen and PCSX Rearmed's gpu_neon:
x0 = GPU_EXPANDSIGN(packet.S2[2] + gpu_unai.DrawingOffset[0]);
y0 = GPU_EXPANDSIGN(packet.S2[3] + gpu_unai.DrawingOffset[1]);
u32 w = packet.U2[4] & 0x3ff; // Max width is 1023
u32 h = packet.U2[5] & 0x1ff; // Max height is 511
x1 = x0 + w;
y1 = y0 + h;
s32 xmin, xmax, ymin, ymax;
xmin = gpu_unai.DrawingArea[0]; xmax = gpu_unai.DrawingArea[2];
ymin = gpu_unai.DrawingArea[1]; ymax = gpu_unai.DrawingArea[3];
if (y0 < ymin) y0 = ymin;
if (y1 > ymax) y1 = ymax;
if (y1 <= y0) return;
if (x0 < xmin) x0 = xmin;
if (x1 > xmax) x1 = xmax;
x1 -= x0;
if (x1 <= 0) return;
const u16 Data = GPU_RGB16(packet.U4[0]);
u16 *Pixel = &((u16*)gpu_unai.vram)[FRAME_OFFSET(x0, y0)];
const int li=gpu_unai.ilace_mask;
const int pi=(ProgressiveInterlaceEnabled()?(gpu_unai.ilace_mask+1):0);
const int pif=(ProgressiveInterlaceEnabled()?(gpu_unai.prog_ilace_flag?(gpu_unai.ilace_mask+1):0):1);
for (; y0<y1; ++y0) {
if (!(y0&li) && (y0&pi)!=pif)
gpuTileSpanDriver(Pixel,x1,Data);
Pixel += FRAME_WIDTH;
}
}
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