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Pushed new blending modes

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This commit is contained in:
neauoire 2021-08-01 11:00:07 -07:00
parent f3b237f0f9
commit b826d78a56
3 changed files with 67 additions and 21 deletions
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4
build.sh
View file

@ -54,9 +54,9 @@ then
fi
echo "Assembling.."
./bin/uxnasm projects/examples/demos/piano.tal bin/piano.rom
./bin/uxnasm projects/examples/devices/screen.tal bin/screen.rom
echo "Running.."
./bin/uxnemu bin/piano.rom
./bin/uxnemu bin/screen.rom
echo "Done."

66
projects/examples/devices/screen.tal
View file

@ -1,7 +1,6 @@
( dev/screen )
%RTN { JMP2r }
%2// { #01 SFT2 }
( devices )
@ -24,13 +23,16 @@
#f0c0 .System/b DEO2
( find screen center )
.Screen/width DEI2 2// .center/x STZ2
.Screen/height DEI2 2// .center/y STZ2
.Screen/width DEI2 #01 SFT2 #0020 SUB2 .center/x STZ2
.Screen/height DEI2 #01 SFT2 .center/y STZ2
( draw )
;draw-table JSR2
;draw-sprites JSR2
;draw-circle JSR2
;draw-1bpp JSR2
;draw-2bpp JSR2
;draw-pixels JSR2
BRK
@ -72,19 +74,53 @@ RTN
RTN
@draw-circle ( -- )
@draw-1bpp ( -- )
#00 #10
&loop
( color ) OVR STH
( y ) OVR #04 DIV [ #00 SWP ] #0010 MUL2
[ .center/y LDZ2 #0040 SUB2 ADD2 ] STH2
( x ) OVR #03 AND [ #00 SWP ] #0010 MUL2 #0040 ADD2
[ .center/x LDZ2 #0008 ADD2 ADD2 ]
STH2r STHr #00 ;draw-circle JSR2
SWP #01 ADD SWP
LTHk ,&loop JCN
POP2
RTN
@draw-2bpp ( -- )
#00 #10
&loop
( color ) OVR STH
( y ) OVR #04 DIV [ #00 SWP ] #0010 MUL2
[ .center/y LDZ2 ADD2 ] STH2
( x ) OVR #03 AND [ #00 SWP ] #0010 MUL2 #0040 ADD2
[ .center/x LDZ2 #0008 ADD2 ADD2 ]
STH2r STHr #80 ;draw-circle JSR2
SWP #01 ADD SWP
LTHk ,&loop JCN
POP2
RTN
@draw-circle ( x* y* color depth -- )
ADD STH
;preview_icn .Screen/addr DEO2
.center/x LDZ2 #0048 ADD2 .Screen/x DEO2
.center/y LDZ2 #0030 ADD2 .Screen/y DEO2
#81 .Screen/sprite DEO
.center/x LDZ2 #0050 ADD2 .Screen/x DEO2
#91 .Screen/sprite DEO
.center/x LDZ2 #0048 ADD2 .Screen/x DEO2
.center/y LDZ2 #0038 ADD2 .Screen/y DEO2
#a1 .Screen/sprite DEO
.center/x LDZ2 #0050 ADD2 .Screen/x DEO2
#b1 .Screen/sprite DEO
.Screen/y DEO2
.Screen/x DEO2
#00 STHkr ADD .Screen/sprite DEO
.Screen/x DEI2 #0008 ADD2 .Screen/x DEO2
#10 STHkr ADD .Screen/sprite DEO
.Screen/x DEI2 #0008 SUB2 .Screen/x DEO2
.Screen/y DEI2 #0008 ADD2 .Screen/y DEO2
#20 STHkr ADD .Screen/sprite DEO
.Screen/x DEI2 #0008 ADD2 .Screen/x DEO2
#30 STHr ADD .Screen/sprite DEO
RTN

18
src/devices/ppu.c
View file

@ -12,6 +12,16 @@ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE.
*/
static Uint8 blending1bpp[2][16] = {
{0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3},
{0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3}};
static Uint8 blending2bpp[4][16] = {
{0, 0, 0, 0, 1, 0, 1, 1, 2, 2, 0, 2, 3, 3, 3, 0},
{0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3},
{1, 2, 3, 1, 1, 2, 3, 1, 1, 2, 3, 1, 1, 2, 3, 1},
{2, 3, 1, 2, 2, 3, 1, 2, 2, 3, 1, 2, 2, 3, 1, 2}};
void
clear(Ppu *p)
{
@ -40,7 +50,7 @@ puticn(Ppu *p, Uint8 layer, Uint16 x, Uint16 y, Uint8 *sprite, Uint8 color, Uint
layer,
x + (flipx ? 7 - h : h),
y + (flipy ? 7 - v : v),
ch1 ? (color & 0x3) : (color >> 0x2));
blending1bpp[ch1][color]);
}
}
@ -52,13 +62,13 @@ putchr(Ppu *p, Uint8 layer, Uint16 x, Uint16 y, Uint8 *sprite, Uint8 color, Uint
for(h = 0; h < 8; h++) {
Uint8 ch1 = ((sprite[v] >> (7 - h)) & 0x1);
Uint8 ch2 = ((sprite[v + 8] >> (7 - h)) & 0x1);
Uint8 id = ch1 + ch2 * 2;
if(id || color > 0x7)
Uint8 ch = ch1 + ch2 * 2;
if(ch || (color != 0x05 && color != 0x0a && color != 0x0f))
putpixel(p,
layer,
x + (flipx ? 7 - h : h),
y + (flipy ? 7 - v : v),
(id < 2 ? id : color / 2 + id * (color % 8)) & 0x3);
blending2bpp[ch][color]);
}
}