TheIndustriousRabbit
/
cool-bun-demo
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

this is as optimized as the code will reasonably get 

we just need to blit less stuff
This commit is contained in:
John Bintz 2024-06-13 09:01:22 -04:00
parent 331b76e798
commit 686125592a
3 changed files with 92 additions and 52 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

88
bun.c
View File

@ -92,7 +92,7 @@ void bun_offRightSide(
uint8_t i, plane = 0;
uint8_t shift = plusXValue & 15;
uint8_t wordShift = (plusXValue >> 4);
uint16_t bltalwm;
uint16_t bltalwm, bltcon0, bltcon1, bltdmod, bltsize;
bunClear->memoryStartOffsetBytes = (y * screenSetup->byteWidth) +
screenSetup->byteWidth - COOL_BUN_WIDTH_BYTES +
@ -106,9 +106,17 @@ void bun_offRightSide(
bltalwm += (1 << (15 - i));
}
bltcon0 = BLTCON0(0xc0, 0, 1, 0, 1, shift);
bltcon1 = BLTCON1(bunClear->direction, shift);
bltdmod = screenSetup->byteWidth - COOL_BUN_WIDTH_BYTES +
wordShift * 2;
bltsize = bunClear->widthWords + (bunClear->heightRows << 6);
for (plane = 0; plane < 2; ++plane) {
custom.bltcon0 = BLTCON0(0xc0, 0, 1, 0, 1, shift);
custom.bltcon1 = BLTCON1(bunClear->direction, shift);
custom.bltcon0 = bltcon0;
custom.bltcon1 = bltcon1;
custom.bltadat = 0xffff;
custom.bltbpt = coolbunPlaneStarts[BUN_OFF_LEFT_SIDE][plane];
@ -119,10 +127,9 @@ void bun_offRightSide(
custom.bltalwm = bltalwm;
custom.bltbmod = wordShift * 2;
custom.bltdmod = screenSetup->byteWidth - COOL_BUN_WIDTH_BYTES +
wordShift * 2;
custom.bltdmod = bltdmod;
custom.bltsize = bunClear->widthWords + (bunClear->heightRows << 6);
custom.bltsize = bltsize;
WaitBlit();
}
@ -139,7 +146,7 @@ void bun_offLeftSide(
uint8_t shift = minusXValue & 15;
uint8_t wordShift = (minusXValue >> 4);
uint8_t i;
uint16_t bltalwm;
uint16_t bltalwm, bltcon0, bltcon1, bltdmod, bltsize;
// y can't be 0 otherwise we will corrupt memory for now
if (y == 0) return;
@ -155,10 +162,16 @@ void bun_offLeftSide(
bltalwm += (1 << i);
}
bltcon0 = BLTCON0(0xc0, 0, 1, 0, 1, shift);
bltcon1 = BLTCON1(bunClear->direction, shift);
bltdmod = screenSetup->byteWidth - 4 + wordShift * 2;
bltsize = bunClear->widthWords + (bunClear->heightRows << 6);
for (plane = 0; plane < 2; ++plane) {
// shift left, so descending
custom.bltcon0 = BLTCON0(0xc0, 0, 1, 0, 1, shift);
custom.bltcon1 = BLTCON1(bunClear->direction, shift);
custom.bltcon0 = bltcon0;
custom.bltcon1 = bltcon1;
// a has a mask we're shifting
custom.bltadat = 0xffff;
@ -172,9 +185,9 @@ void bun_offLeftSide(
custom.bltalwm = bltalwm;
custom.bltbmod = wordShift * 2;
custom.bltdmod = screenSetup->byteWidth - 4 + wordShift * 2;
custom.bltdmod = bltdmod;
custom.bltsize = bunClear->widthWords + (bunClear->heightRows << 6);
custom.bltsize = bltsize;
WaitBlit();
}
@ -190,6 +203,7 @@ void bun_anywhere(
uint8_t plane;
uint8_t shift = x & 15;
uint8_t needsExtraWord = shift != 0;
uint16_t bltcon0, bltcon1, bltalwm, bltbmod, bltdmod, bltsize;
bunClear->memoryStartOffsetBytes = WORD_ALIGNED_BYTE_POSITION(screenSetup->width, x, y);
@ -197,13 +211,23 @@ void bun_anywhere(
bunClear->widthWords = 2 + needsExtraWord;
bunClear->direction = BLITTER_ASCENDING;
for (plane = 0; plane < 2; ++plane) {
// if we extend the bun area by a word, we only need one write
// buns will never interfere with a background so they don't need a mask
// they do need the scratch area though
custom.bltcon0 = BLTCON0(0xc0, 0, 1, 0, 1, shift);
custom.bltcon1 = BLTCON1(bunClear->direction, shift);
bltcon0 = BLTCON0(0xc0, 0, 1, 0, 1, shift);
bltcon1 = BLTCON1(bunClear->direction, shift);
if (needsExtraWord) {
bltalwm = 0x0000;
} else {
bltalwm = 0xffff;
}
bltbmod = -(needsExtraWord * 2);
bltdmod = screenSetup->byteWidth - COOL_BUN_WIDTH_BYTES - (needsExtraWord * 2);
bltsize = bunClear->widthWords + (bunClear->heightRows << 6);
for (plane = 0; plane < 2; ++plane) {
custom.bltcon0 = bltcon0;
custom.bltcon1 = bltcon1;
custom.bltadat = 0xffff;
custom.bltbpt = coolbunPlaneStarts[BUN_ANYWHERE][plane];
@ -212,15 +236,11 @@ void bun_anywhere(
// custom.bltdpt = screenSetup.memoryStart;
custom.bltafwm = 0xffff;
if (needsExtraWord) {
custom.bltalwm = 0x0000;
} else {
custom.bltalwm = 0xffff;
}
custom.bltalwm = bltalwm;
custom.bltbmod = -(needsExtraWord * 2);
custom.bltdmod = screenSetup->byteWidth - COOL_BUN_WIDTH_BYTES - (needsExtraWord * 2);
custom.bltsize = bunClear->widthWords + (bunClear->heightRows << 6);
custom.bltbmod = bltbmod;
custom.bltdmod = bltdmod;
custom.bltsize = bltsize;
WaitBlit();
}
@ -242,7 +262,7 @@ void renderBun(
if (x < -31) return;
if (x > screenSetup->width + 31) return;
if (y < 1) return;
if (y > screenSetup->height- COOL_BUN_HEIGHT - 1) return;
if (y > screenSetup->height - COOL_BUN_HEIGHT - 1) return;
if (x < 0) {
bun_offLeftSide(
@ -370,22 +390,30 @@ void clearCurrentBuns(
) {
int bun, plane;
struct BunClear *currentBunClear;
uint16_t bltcon0, bltcon1, bltdmod, bltsize;
if (!hasBunClear[bunRenderer->currentScreen->currentBuffer]) return;
bltcon0 = 0xc0 + (1 << 8);
for (bun = 0; bun < BUN_COUNT; ++bun) {
currentBunClear = &bunClearForScreen[bunRenderer->currentScreen->currentBuffer][bun];
bltcon1 = BLTCON1(currentBunClear->direction, 0);
bltdmod = bunRenderer->screenSetup->byteWidth - (currentBunClear->widthWords * 2);
bltsize = currentBunClear->widthWords + (currentBunClear->heightRows << 6);
for (plane = 0; plane < 2; ++plane) {
custom.bltcon0 = 0xc0 + (1 << 8);
custom.bltcon1 = BLTCON1(currentBunClear->direction, 0);
custom.bltcon0 = bltcon0;
custom.bltcon1 = bltcon1;
custom.bltadat = 0x0000;
custom.bltafwm = 0xffff;
custom.bltalwm = 0xffff;
custom.bltdpt = bunRenderer->currentScreen->planes[plane] +
currentBunClear->memoryStartOffsetBytes;
custom.bltdmod = bunRenderer->screenSetup->byteWidth - (currentBunClear->widthWords * 2);
custom.bltsize = currentBunClear->widthWords + (currentBunClear->heightRows << 6);
custom.bltdmod = bltdmod;
custom.bltsize = bltsize;
WaitBlit();
}
}

BIN
main
View File

Binary file not shown.

56
main.c
View File

@ -64,6 +64,37 @@ extern uint16_t chip SpriteCopperlist[];
extern uint16_t chip SpriteData[];
extern uint16_t chip MaskBitplane[];
void renderTopaz(void) {
int plane;
uint16_t bltcon0, bltcmod;
uint8_t *bltbpt;
bltcon0 = 0xca + (1 << 8) + (1 << 9) + (1 << 10) + (1 << 11);
bltcmod = screenSetup.byteWidth - 32;
bltbpt = TopazBitplanes;
for (plane = 0; plane < 3; ++plane) {
custom.bltcon0 = bltcon0;
custom.bltcon1 = 0;
custom.bltafwm = 0xffff;
custom.bltalwm = 0xffff;
custom.bltapt = MaskBitplane;
custom.bltbpt = bltbpt;
custom.bltcpt = currentScreen.planes[plane];
custom.bltdpt = currentScreen.planes[plane];
custom.bltamod = 0;
custom.bltbmod = 0;
custom.bltcmod = bltcmod;
custom.bltdmod = bltcmod;
custom.bltsize = 16 + (256 << 6);
bltbpt += 32 * 256;
WaitBlit();
}
}
int main(void) {
uint16_t *copperlist, *currentCopperlist, *currentCopperColors, result, *currentSpriteCopperlist;
uint32_t spriteDataPointer;
@ -78,7 +109,6 @@ int main(void) {
colors[2] = 0x0fff;
colors[3] = 0x000f;
printf("%x\n", &SpriteData);
printf("setting up, i haven't crashed...yet.\n");
setupScreen(&screenSetup, SCREEN_WIDTH, SCREEN_HEIGHT, 3);
@ -101,7 +131,7 @@ int main(void) {
&currentScreen,
&copperlistBitplanePointers
);
currentCopperlist = setUpEmptySpritesInCopperlist(currentCopperlist);
//currentCopperlist = setUpEmptySpritesInCopperlist(currentCopperlist);
currentCopperColors = CopperColors;
currentSpriteCopperlist = SpriteCopperlist;
@ -198,26 +228,11 @@ int main(void) {
renderBunFrame(i, &bunRenderer);
renderTopaz();
/*
*/
for (plane = 0; plane < 3; ++plane) {
custom.bltcon0 = 0xca + (1 << 8) + (1 << 9) + (1 << 10) + (1 << 11);
custom.bltcon1 = 0;
custom.bltafwm = 0xffff;
custom.bltalwm = 0xffff;
custom.bltapt = MaskBitplane;
custom.bltbpt = TopazBitplanes + (plane * 32 * 256);
custom.bltcpt = currentScreen.planes[plane];
custom.bltdpt = currentScreen.planes[plane];
custom.bltamod = 0;
custom.bltbmod = 0;
custom.bltcmod = screenSetup.byteWidth - 32;
custom.bltdmod = screenSetup.byteWidth - 32;
custom.bltsize = 16 + (256 << 6);
WaitBlit();
}
/*
*(SpriteData) = SPRPOS(250, 44);
@ -230,7 +245,6 @@ int main(void) {
copperlistBitplanePointers
);
WaitTOF();
if ((ciaa.ciapra >> 6) != 3) break;
@ -255,8 +269,6 @@ int main(void) {
}
*/
printf("%x %x", SPRPOS(250, 44), SPRCTL(250, 44, 44 + 256));
freeCopperlist(copperlist);
teardownBunRenderer();