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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(const PS gpuSpriteSpanDriver)
{
s32 x0, x1;
s32 y0, y1;
s32 u0;
s32 v0;
x1 = x0 = GPU_EXPANDSIGN_SPRT(PacketBuffer.S2[2]) + DrawingOffset[0];
y1 = y0 = GPU_EXPANDSIGN_SPRT(PacketBuffer.S2[3]) + DrawingOffset[1];
x1+= PacketBuffer.S2[6];
y1+= PacketBuffer.S2[7];
{
s32 xmin, xmax;
s32 ymin, ymax;
xmin = DrawingArea[0]; xmax = DrawingArea[2];
ymin = DrawingArea[1]; ymax = DrawingArea[3];
{
int rx0 = Max2(xmin,Min2(x0,x1));
int ry0 = Max2(ymin,Min2(y0,y1));
int rx1 = Min2(xmax,Max2(x0,x1));
int ry1 = Min2(ymax,Max2(y0,y1));
if( rx0>=rx1 || ry0>=ry1) return;
}
u0 = PacketBuffer.U1[8];
v0 = PacketBuffer.U1[9];
r4 = s32(PacketBuffer.U1[0]);
g4 = s32(PacketBuffer.U1[1]);
b4 = s32(PacketBuffer.U1[2]);
{
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;
}
}
{
u16 *Pixel = &((u16*)GPU_FrameBuffer)[FRAME_OFFSET(x0, y0)];
const int li=linesInterlace;
const u32 masku=TextureWindow[2];
const u32 maskv=TextureWindow[3];
for (;y0<y1;++y0) {
if( 0 == (y0&li) ) gpuSpriteSpanDriver(Pixel,x1,FRAME_OFFSET(u0,v0),masku);
Pixel += FRAME_WIDTH;
v0 = (v0+1)&maskv;
}
}
}
///////////////////////////////////////////////////////////////////////////////
void gpuDrawT(const PT gpuTileSpanDriver)
{
s32 x0, y0;
s32 x1, y1;
x1 = x0 = GPU_EXPANDSIGN_SPRT(PacketBuffer.S2[2]) + DrawingOffset[0];
y1 = y0 = GPU_EXPANDSIGN_SPRT(PacketBuffer.S2[3]) + DrawingOffset[1];
x1+= PacketBuffer.S2[4];
y1+= PacketBuffer.S2[5];
{
s32 xmin, xmax;
s32 ymin, ymax;
xmin = DrawingArea[0]; xmax = DrawingArea[2];
ymin = DrawingArea[1]; ymax = DrawingArea[3];
{
int rx0 = Max2(xmin,Min2(x0,x1));
int ry0 = Max2(ymin,Min2(y0,y1));
int rx1 = Min2(xmax,Max2(x0,x1));
int ry1 = Min2(ymax,Max2(y0,y1));
if(rx0>=rx1 || ry0>=ry1) return;
}
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;
}
{
u16 *Pixel = &((u16*)GPU_FrameBuffer)[FRAME_OFFSET(x0, y0)];
const u16 Data = GPU_RGB16(PacketBuffer.U4[0]);
const int li=linesInterlace;
for (; y0<y1; ++y0)
{
if( 0 == (y0&li) ) gpuTileSpanDriver(Pixel,x1,Data);
Pixel += FRAME_WIDTH;
}
}
}
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