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blending

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This commit is contained in:
David Haywood 2013-03-05 02:39:14 +00:00
parent 6cf6432d66
commit b7d10f303d
1 changed files with 72 additions and 28 deletions
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100
src/mame/drivers/gunpey.c
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@ -307,25 +307,10 @@ UINT8 gunpey_state::draw_gfx(running_machine &machine, bitmap_ind16 &bitmap,cons
UINT8 sourcewidth = (m_wram[count+6] & 0xff);
UINT8 sourceheight = (m_wram[count+7] >> 8);
//UINT32 col = 0xffffff;
// UINT32 val = (m_wram[count+1] << 16) | ((m_wram[count+2]));
int xsource = ((m_wram[count+2] & 0x003f) << 5) | ((m_wram[count+1] & 0xf800) >> 11);
int ysource = ((m_wram[count+3] & 0x001f) << 6) | ((m_wram[count+2] & 0xfc00) >> 10);
//printf("%08x %04x %04x\n", val, m_wram[count+1],m_wram[count+2] );
// UINT16 xsource = (m_wram[count+2] & 0x00ff << 4) | (m_wram[count+1] & 0xf000 >> 12);
//xsource<<=1;
// xsource<<=1;
// ysource <<=2;
// UINT8 testhack = m_vram[((((ysource+0)&0x7ff)*0x800) + ((xsource+0)&0x7ff))];
// UINT8 testhack2 = m_vram[((((ysource+0)&0x7ff)*0x800) + ((xsource+1)&0x7ff))];
//if (m_wram[count+1] & 0x0010)
// color = machine.rand()&0xf;
int alpha = m_wram[count+1] & 0x1f;
UINT16 unused;
@ -345,13 +330,6 @@ UINT8 gunpey_state::draw_gfx(running_machine &machine, bitmap_ind16 &bitmap,cons
//printf("zoomed widths %02x %02x heights %02x %02x\n", sourcewidth, zoomwidth, sourceheight, zoomheight);
}
// if ((testhack2 & 0x0f) == 0x08)
// return m_wram[count+0] & 0x80;
//if (debug) printf("testhack1 %02x %02x\n", testhack, testhack2);
if(bpp_sel == 0x00) // 4bpp
{
for(int yi=0;yi<sourceheight;yi++)
@ -388,7 +366,27 @@ UINT8 gunpey_state::draw_gfx(running_machine &machine, bitmap_ind16 &bitmap,cons
}
if(cliprect.contains(x+(xi*2), y+yi))
bitmap.pix16(y+yi, x+(xi*2)) = color_data & 0x7fff;
{
if (alpha==0x00) // a value of 0x00 is solid
{
bitmap.pix16(y+yi, x+(xi*2)) = color_data & 0x7fff;
}
else
{
UINT16 basecolor = bitmap.pix16(y+yi, x+(xi*2));
int base_r = ((basecolor >> 10)&0x1f)*alpha;
int base_g = ((basecolor >> 5)&0x1f)*alpha;
int base_b = ((basecolor >> 0)&0x1f)*alpha;
int r = ((color_data & 0x7c00) >> 10)*(0x1f-alpha);
int g = ((color_data & 0x03e0) >> 5)*(0x1f-alpha);
int b = ((color_data & 0x001f) >> 0)*(0x1f-alpha);
r = (base_r+r)/0x1f;
g = (base_g+g)/0x1f;
b = (base_b+b)/0x1f;
color_data = (color_data & 0x8000) | (r << 10) | (g << 5) | (b << 0);
bitmap.pix16(y+yi, x+(xi*2)) = color_data & 0x7fff;
}
}
}
pix = (data & 0xf0)>>4;
@ -415,8 +413,30 @@ UINT8 gunpey_state::draw_gfx(running_machine &machine, bitmap_ind16 &bitmap,cons
color_data = (color_data & 0x8000) | (r << 10) | (g << 5) | (b << 0);
}
if(cliprect.contains(x+1+(xi*2), y+yi))
bitmap.pix16(y+yi, x+1+(xi*2)) = color_data & 0x7fff;
if(cliprect.contains(x+1+(xi*2),y+yi))
{
if (alpha==0x00) // a value of 0x00 is solid
{
bitmap.pix16(y+yi, x+1+(xi*2)) = color_data & 0x7fff;
}
else
{
UINT16 basecolor = bitmap.pix16(y+yi, x+1+(xi*2));
int base_r = ((basecolor >> 10)&0x1f)*alpha;
int base_g = ((basecolor >> 5)&0x1f)*alpha;
int base_b = ((basecolor >> 0)&0x1f)*alpha;
int r = ((color_data & 0x7c00) >> 10)*(0x1f-alpha);
int g = ((color_data & 0x03e0) >> 5)*(0x1f-alpha);
int b = ((color_data & 0x001f) >> 0)*(0x1f-alpha);
r = (base_r+r)/0x1f;
g = (base_g+g)/0x1f;
b = (base_b+b)/0x1f;
color_data = (color_data & 0x8000) | (r << 10) | (g << 5) | (b << 0);
bitmap.pix16(y+yi, x+1+(xi*2)) = color_data & 0x7fff;
}
}
}
}
}
@ -476,8 +496,32 @@ UINT8 gunpey_state::draw_gfx(running_machine &machine, bitmap_ind16 &bitmap,cons
color_data = (color_data & 0x8000) | (r << 10) | (g << 5) | (b << 0);
}
if(cliprect.contains(x+xi, y+yi))
bitmap.pix16(y+yi, x+xi) = color_data & 0x7fff;
if(cliprect.contains(x+xi,y+yi))
{
if (alpha==0x00) // a value of 0x00 is solid
{
bitmap.pix16(y+yi, x+xi) = color_data & 0x7fff;
}
else
{
UINT16 basecolor = bitmap.pix16(y+yi, x+xi);
int base_r = ((basecolor >> 10)&0x1f)*alpha;
int base_g = ((basecolor >> 5)&0x1f)*alpha;
int base_b = ((basecolor >> 0)&0x1f)*alpha;
int r = ((color_data & 0x7c00) >> 10)*(0x1f-alpha);
int g = ((color_data & 0x03e0) >> 5)*(0x1f-alpha);
int b = ((color_data & 0x001f) >> 0)*(0x1f-alpha);
r = (base_r+r)/0x1f;
g = (base_g+g)/0x1f;
b = (base_b+b)/0x1f;
color_data = (color_data & 0x8000) | (r << 10) | (g << 5) | (b << 0);
bitmap.pix16(y+yi, x+xi) = color_data & 0x7fff;
}
}
}
}
}