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https://github.com/holub/mame
synced 2025-05-23 14:19:01 +03:00
playing with blending effects in galpani3
This commit is contained in:
davidhay
parent
4af951fcb9
commit
23430c3df6
@ -96,6 +96,13 @@ static UINT16 galpani3_framebuffer3_enable;
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static UINT16*galpani3_framebuffer1_bgcol;
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static UINT16*galpani3_framebuffer2_bgcol;
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static UINT16*galpani3_framebuffer3_bgcol;
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static UINT16*galpani3_framebuffer3_bright1;
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static UINT16*galpani3_framebuffer3_bright2;
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static UINT16*galpani3_framebuffer2_bright1;
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static UINT16*galpani3_framebuffer2_bright2;
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static UINT16*galpani3_framebuffer1_bright1;
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static UINT16*galpani3_framebuffer1_bright2;
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static UINT16 *galpani3_sprregs, *galpani3_spriteram;
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@ -128,12 +135,52 @@ static VIDEO_START(galpani3)
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}
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static int gp3_is_alpha_pen(int pen)
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{
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UINT16 dat;
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if (pen<0x4000)
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{
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dat = paletteram16[pen];
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}
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else if (pen<0x4100)
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{
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dat = galpani3_framebuffer1_palette[pen&0xff];
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}
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else if (pen<0x4200)
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{
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dat = galpani3_framebuffer2_palette[pen&0xff];
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}
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else if (pen<0x4300)
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{
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dat = galpani3_framebuffer3_palette[pen&0xff];
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}
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else if (pen<0x4301)
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{
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dat = galpani3_framebuffer1_bgcol[0];
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}
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else if (pen<0x4302)
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{
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dat = galpani3_framebuffer2_bgcol[0];
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}
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else if (pen<0x4303)
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{
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dat = galpani3_framebuffer3_bgcol[0];
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}
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if (dat&0x8000) return 1;
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else return 0;
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}
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static VIDEO_UPDATE(galpani3)
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{
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int x,y;
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UINT16* src1;
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UINT16* dst;
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UINT32* dst;
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UINT16 pixdata1;
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const pen_t *paldata = screen->machine->pens;
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fillbitmap(bitmap, 0x0000, cliprect);
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@ -161,26 +208,101 @@ static VIDEO_UPDATE(galpani3)
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UINT8 pridat = galpani3_priority_buffer[(priline*0x200)+prioffs];
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UINT16* dst = BITMAP_ADDR16(bitmap, drawy, drawx);
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UINT32* dst = BITMAP_ADDR32(bitmap, drawy, drawx);
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if (dat3 && galpani3_framebuffer3_enable) dst[0] = dat3+0x4200;
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else if (dat2 && galpani3_framebuffer2_enable) dst[0] = dat2+0x4100;
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else if (dat1 && galpani3_framebuffer1_enable) dst[0] = dat1+0x4000;
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// this is all wrong
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if (pridat==0x0f) // relates to the area you've drawn over
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{
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if (dat2 && galpani3_framebuffer2_enable) dst[0] = dat2+0x4100;
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else if (dat1 && galpani3_framebuffer1_enable) dst[0] = dat1+0x4000;
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if (dat1 && galpani3_framebuffer1_enable)
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{
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dst[0] = paldata[dat1+0x4000];
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}
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if (dat2 && galpani3_framebuffer2_enable)
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{
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dst[0] = paldata[dat2+0x4100];
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}
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}
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else if (pridat==0xcf) // the girl
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{
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dst[0] = paldata[0x4300];
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}
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else
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{
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/* this isn't right, but the registers have something to do with
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alpha / mixing, and bit 0x8000 of the palette is DEFINITELY alpha
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enable -- see fading in intro */
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if (dat1 && galpani3_framebuffer1_enable)
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{
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UINT16 pen = dat1+0x4000;
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UINT32 pal = paldata[pen];
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if (gp3_is_alpha_pen(pen))
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{
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int r,g,b;
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r = (pal & 0x00ff0000)>>16;
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g = (pal & 0x0000ff00)>>8;
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b = (pal & 0x000000ff)>>0;
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r = (r * galpani3_framebuffer1_bright2[0]) / 0xff;
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g = (g * galpani3_framebuffer1_bright2[0]) / 0xff;
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b = (b * galpani3_framebuffer1_bright2[0]) / 0xff;
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pal = (r & 0x000000ff)<<16;
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pal |=(g & 0x000000ff)<<8;
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pal |=(b & 0x000000ff)<<0;
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dst[0] = pal;
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}
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else
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{
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dst[0] = pal;
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}
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}
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if (dat2 && galpani3_framebuffer2_enable)
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{
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UINT16 pen = dat2+0x4100;
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UINT32 pal = paldata[pen];
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if (gp3_is_alpha_pen(pen))
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{
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int r,g,b;
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r = (pal & 0x00ff0000)>>16;
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g = (pal & 0x0000ff00)>>8;
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b = (pal & 0x000000ff)>>0;
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r = (r * galpani3_framebuffer2_bright2[0]) / 0xff;
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g = (g * galpani3_framebuffer2_bright2[0]) / 0xff;
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b = (b * galpani3_framebuffer2_bright2[0]) / 0xff;
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pal = (r & 0x000000ff)<<16;
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pal |=(g & 0x000000ff)<<8;
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pal |=(b & 0x000000ff)<<0;
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dst[0] |= pal;
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}
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else
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{
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dst[0] = pal;
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}
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}
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if (dat3 && galpani3_framebuffer3_enable)
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{
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dst[0] = paldata[dat3+0x4200];
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}
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}
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/*
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else if (pridat==0x2f) // area outside of the girl
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{
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//dst[0] = mame_rand(screen->machine)&0x3fff;
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}
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else if (pridat==0xcf) // the girl
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{
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dst[0] = 0x4300;
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}
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else if (pridat==0x00) // the initial line / box that gets drawn
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{
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//dst[0] = mame_rand(screen->machine)&0x3fff;
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@ -197,6 +319,7 @@ static VIDEO_UPDATE(galpani3)
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{
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//printf("%02x, ",pridat);
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}
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*/
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}
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}
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}
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@ -209,7 +332,7 @@ static VIDEO_UPDATE(galpani3)
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for (y=0;y<240;y++)
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{
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src1 = BITMAP_ADDR16(sprite_bitmap_1, y, 0);
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dst = BITMAP_ADDR16(bitmap, y, 0);
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dst = BITMAP_ADDR32(bitmap, y, 0);
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for (x=0;x<320;x++)
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{
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@ -217,7 +340,7 @@ static VIDEO_UPDATE(galpani3)
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if (pixdata1 & 0x3fff)
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{
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dst[x] = (pixdata1 & 0x3fff);
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dst[x] = paldata[(pixdata1 & 0x3fff)];
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}
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}
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}
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@ -416,7 +539,7 @@ READ16_HANDLER( galpani3_regs1_r )
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switch (offset)
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{
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case 0x2:
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return 0xffff;
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return galpani3_framebuffer1_enable;
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case 0xb:
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{
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@ -441,7 +564,7 @@ READ16_HANDLER( galpani3_regs2_r )
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switch (offset)
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{
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case 0x2:
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return 0xffff;
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return galpani3_framebuffer2_enable;
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case 0xb:
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{
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@ -466,7 +589,7 @@ READ16_HANDLER( galpani3_regs3_r )
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switch (offset)
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{
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case 0x2:
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return 0xffff;
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return galpani3_framebuffer3_enable;
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case 0xb:
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{
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@ -655,17 +778,17 @@ static WRITE16_HANDLER( galpani3_priority_buffer_scrolly_w )
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/* I'm not convinced these are enables */
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static WRITE16_HANDLER( galpani3_framebuffer1_enable_w )
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{
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galpani3_framebuffer1_enable = data & 1;
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galpani3_framebuffer1_enable = data;
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}
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static WRITE16_HANDLER( galpani3_framebuffer2_enable_w )
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{
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galpani3_framebuffer2_enable = data & 1;
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galpani3_framebuffer2_enable = data;
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}
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static WRITE16_HANDLER( galpani3_framebuffer3_enable_w )
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{
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galpani3_framebuffer3_enable = data & 1;
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galpani3_framebuffer3_enable = data;
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}
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/* definitely looks like a cycling bg colour used for the girls */
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@ -714,8 +837,8 @@ static ADDRESS_MAP_START( galpani3_map, ADDRESS_SPACE_PROGRAM, 16 )
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AM_RANGE(0x800c00, 0x800c01) AM_WRITE(galpani3_framebuffer1_scrolly_w) // scroll?
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AM_RANGE(0x800c02, 0x800c03) AM_WRITE(galpani3_framebuffer1_enable_w) // enable?
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AM_RANGE(0x800c06, 0x800c07) AM_WRITE(galpani3_framebuffer1_bgcol_w) AM_BASE(&galpani3_framebuffer1_bgcol) // bg colour? cycles ingame, for girls?
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AM_RANGE(0x800c10, 0x800c11) AM_WRITE(SMH_NOP) // brightness / blend amount?
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AM_RANGE(0x800c12, 0x800c13) AM_WRITE(SMH_NOP) // similar.
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AM_RANGE(0x800c10, 0x800c11) AM_RAM AM_BASE(&galpani3_framebuffer1_bright1) // brightness / blend amount?
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AM_RANGE(0x800c12, 0x800c13) AM_RAM AM_BASE(&galpani3_framebuffer1_bright2) // similar.
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AM_RANGE(0x800c18, 0x800c1b) AM_WRITE(galpani3_regs1_address_w) // ROM address of RLE data, in bytes
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AM_RANGE(0x800c1e, 0x800c1f) AM_WRITE(galpani3_regs1_go_w) // ?
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AM_RANGE(0x800c00, 0x800c1f) AM_READ(galpani3_regs1_r)// ? R layer regs ? see subroutine $3a03e
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@ -729,8 +852,8 @@ static ADDRESS_MAP_START( galpani3_map, ADDRESS_SPACE_PROGRAM, 16 )
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AM_RANGE(0xa00c00, 0xa00c01) AM_WRITE(galpani3_framebuffer2_scrolly_w)
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AM_RANGE(0xa00c02, 0xa00c03) AM_WRITE(galpani3_framebuffer2_enable_w) // enable?
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AM_RANGE(0xa00c06, 0xa00c07) AM_WRITE(galpani3_framebuffer2_bgcol_w) AM_BASE(&galpani3_framebuffer2_bgcol) // bg colour? same values as previous layer
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AM_RANGE(0xa00c10, 0xa00c11) AM_WRITE(SMH_NOP) // similar..
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AM_RANGE(0xa00c12, 0xa00c13) AM_WRITE(SMH_NOP) // brightness / blend amount?
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AM_RANGE(0xa00c10, 0xa00c11) AM_RAM AM_BASE(&galpani3_framebuffer2_bright1) // similar..
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AM_RANGE(0xa00c12, 0xa00c13) AM_RAM AM_BASE(&galpani3_framebuffer2_bright2) // brightness / blend amount?
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AM_RANGE(0xa00c00, 0xa00c1f) AM_READ(galpani3_regs2_r) // ? G layer regs ? see subroutine $3a03e
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AM_RANGE(0xa00c18, 0xa00c1b) AM_WRITE(galpani3_regs2_address_w) // ROM address of RLE data, in bytes
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AM_RANGE(0xa00c1e, 0xa00c1f) AM_WRITE(galpani3_regs2_go_w) // ?
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@ -744,8 +867,8 @@ static ADDRESS_MAP_START( galpani3_map, ADDRESS_SPACE_PROGRAM, 16 )
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AM_RANGE(0xc00c00, 0xc00c01) AM_WRITE(galpani3_framebuffer3_scrolly_w) // scroll?
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AM_RANGE(0xc00c02, 0xc00c03) AM_WRITE(galpani3_framebuffer3_enable_w) // enable?
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AM_RANGE(0xc00c06, 0xc00c07) AM_WRITE(galpani3_framebuffer3_bgcol_w) AM_BASE(&galpani3_framebuffer3_bgcol) // bg colour? not used?
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AM_RANGE(0xc00c10, 0xc00c11) AM_WRITE(SMH_NOP) // brightness / blend amount?
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AM_RANGE(0xc00c12, 0xc00c13) AM_WRITE(SMH_NOP) // similar..
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AM_RANGE(0xc00c10, 0xc00c11) AM_RAM AM_BASE(&galpani3_framebuffer3_bright1) // brightness / blend amount?
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AM_RANGE(0xc00c12, 0xc00c13) AM_RAM AM_BASE(&galpani3_framebuffer3_bright2) // similar..
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AM_RANGE(0xc00c18, 0xc00c1b) AM_WRITE(galpani3_regs3_address_w) // ROM address of RLE data, in bytes
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AM_RANGE(0xc00c1e, 0xc00c1f) AM_WRITE(galpani3_regs3_go_w) // ?
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AM_RANGE(0xc00c00, 0xc00c1f) AM_READ(galpani3_regs3_r) // ? B layer regs ? see subroutine $3a03e
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@ -784,7 +907,7 @@ static MACHINE_DRIVER_START( galpani3 )
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MDRV_SCREEN_ADD("main", RASTER)
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MDRV_SCREEN_REFRESH_RATE(60)
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MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
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MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
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MDRV_SCREEN_FORMAT(BITMAP_FORMAT_RGB32)
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MDRV_SCREEN_SIZE(64*8, 64*8)
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MDRV_SCREEN_VISIBLE_AREA(0*8, 40*8-1, 0*8, 30*8-1)
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//MDRV_SCREEN_VISIBLE_AREA(0*8, 64*8-1, 0*8, 64*8-1)
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