TheIndustriousRabbit/cool-bun-demo
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start to try and precalculate more stuff

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This commit is contained in:
John Bintz 2024-09-22 08:12:10 -04:00
parent bd47027b4a
commit 16bc75fc73
1 changed files with 121 additions and 21 deletions
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142
bun.c
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@ -14,6 +14,7 @@
#include "bun.h" #include "bun.h"
#include "system/system.h" #include "system/system.h"
#include "system/blitter.h" #include "system/blitter.h"
#include "types.h"
#define COOL_BUN_WIDTH (32) #define COOL_BUN_WIDTH (32)
#define COOL_BUN_WIDTH_BYTES (COOL_BUN_WIDTH / 8) #define COOL_BUN_WIDTH_BYTES (COOL_BUN_WIDTH / 8)
@ -83,21 +84,34 @@ void precalculateBunBLTALWM() {
} }
} }
struct PrecalcBunInfo {
uint32_t memoryStartOffsetBytes;
uint16_t bltcon0;
uint16_t bltcon1;
uint16_t bltdmod;
};
struct PrecalcBunInfo precalcBunInfo[FRAMES_FOR_SCREEN][BUN_COUNT];
void bun_offRightSide( void bun_offRightSide(
int plusXValue, int plusXValue,
int y, int y,
struct ScreenDefinition *screenDefinition, struct ScreenDefinition *screenDefinition,
struct ActiveScreenBufferDetails *activeScreenBufferDetails, struct ActiveScreenBufferDetails *activeScreenBufferDetails,
struct BunClear *bunClear struct BunClear *bunClear,
struct PrecalcBunInfo *precalcBunInfo
) { ) {
uint8_t i, plane = 0; uint8_t i, plane = 0;
uint8_t shift = plusXValue & 15; uint8_t shift = plusXValue & 15;
uint8_t wordShift = (plusXValue >> 4); uint8_t wordShift = (plusXValue >> 4);
uint16_t bltalwm, bltcon0, bltcon1, bltdmod, bltsize; uint16_t bltalwm, bltcon0, bltcon1, bltdmod, bltsize;
/*
bunClear->memoryStartOffsetBytes = (y * screenDefinition->byteWidth) + bunClear->memoryStartOffsetBytes = (y * screenDefinition->byteWidth) +
screenDefinition->byteWidth - COOL_BUN_WIDTH_BYTES + screenDefinition->byteWidth - COOL_BUN_WIDTH_BYTES +
wordShift * 2; wordShift * 2;
*/
bunClear->memoryStartOffsetBytes = precalcBunInfo->memoryStartOffsetBytes;
bunClear->heightRows = COOL_BUN_HEIGHT; bunClear->heightRows = COOL_BUN_HEIGHT;
bunClear->widthWords = 2 - wordShift; bunClear->widthWords = 2 - wordShift;
bunClear->direction = BLITTER_ASCENDING; bunClear->direction = BLITTER_ASCENDING;
@ -111,11 +125,14 @@ void bun_offRightSide(
} }
*/ */
bltcon0 = BLTCON0(0xf0, 1, 0, 0, 1, shift); //bltcon0 = BLTCON0(0xf0, 1, 0, 0, 1, shift);
bltcon1 = BLTCON1(bunClear->direction, shift); //bltcon1 = BLTCON1(bunClear->direction, shift);
//bltdmod = screenDefinition->byteWidth - COOL_BUN_WIDTH_BYTES +
// wordShift * 2;
bltdmod = screenDefinition->byteWidth - COOL_BUN_WIDTH_BYTES + bltcon0 = precalcBunInfo->bltcon0;
wordShift * 2; bltcon1 = precalcBunInfo->bltcon1;
bltdmod = precalcBunInfo->bltdmod;
bltsize = bunClear->widthWords + (bunClear->heightRows << 6); bltsize = bunClear->widthWords + (bunClear->heightRows << 6);
@ -144,7 +161,8 @@ void bun_offLeftSide(
int y, int y,
struct ScreenDefinition *screenDefinition, struct ScreenDefinition *screenDefinition,
struct ActiveScreenBufferDetails *activeScreenBufferDetails, struct ActiveScreenBufferDetails *activeScreenBufferDetails,
struct BunClear *bunClear struct BunClear *bunClear,
struct PrecalcBunInfo *precalcBunInfo
) { ) {
unsigned char plane; unsigned char plane;
uint8_t shift = minusXValue & 15; uint8_t shift = minusXValue & 15;
@ -155,8 +173,11 @@ void bun_offLeftSide(
// y can't be 0 otherwise we will corrupt memory for now // y can't be 0 otherwise we will corrupt memory for now
if (y == 0) return; if (y == 0) return;
/*
bunClear->memoryStartOffsetBytes = (screenDefinition->byteWidth * (y + COOL_BUN_LAST_ROW)) + bunClear->memoryStartOffsetBytes = (screenDefinition->byteWidth * (y + COOL_BUN_LAST_ROW)) +
2 - wordShift * 2; 2 - wordShift * 2;
*/
bunClear->memoryStartOffsetBytes = precalcBunInfo->memoryStartOffsetBytes;
bunClear->heightRows = COOL_BUN_HEIGHT; bunClear->heightRows = COOL_BUN_HEIGHT;
bunClear->widthWords = 2 - wordShift; bunClear->widthWords = 2 - wordShift;
bunClear->direction = BLITTER_DESCENDING; bunClear->direction = BLITTER_DESCENDING;
@ -170,9 +191,12 @@ void bun_offLeftSide(
} }
*/ */
bltcon0 = BLTCON0(0xf0, 1, 0, 0, 1, shift); //bltcon0 = BLTCON0(0xf0, 1, 0, 0, 1, shift);
bltcon1 = BLTCON1(bunClear->direction, shift); //bltcon1 = BLTCON1(bunClear->direction, shift);
bltdmod = screenDefinition->byteWidth - 4 + wordShift * 2; //bltdmod = screenDefinition->byteWidth - 4 + wordShift * 2;
bltcon0 = precalcBunInfo->bltcon0;
bltcon1 = precalcBunInfo->bltcon1;
bltdmod = precalcBunInfo->bltdmod;
bltsize = bunClear->widthWords + (bunClear->heightRows << 6); bltsize = bunClear->widthWords + (bunClear->heightRows << 6);
@ -204,22 +228,29 @@ void bun_anywhere(
int y, int y,
struct ScreenDefinition *screenDefinition, struct ScreenDefinition *screenDefinition,
struct ActiveScreenBufferDetails *activeScreenBufferDetails, struct ActiveScreenBufferDetails *activeScreenBufferDetails,
struct BunClear *bunClear struct BunClear *bunClear,
struct PrecalcBunInfo *precalcBunInfo
) { ) {
uint8_t plane; uint8_t plane;
uint8_t shift = x & 15; uint8_t shift = x & 15;
uint8_t needsExtraWord = shift != 0; uint8_t needsExtraWord = shift != 0;
uint16_t bltcon0, bltcon1, bltalwm, bltamod, bltdmod, bltsize; uint16_t bltcon0, bltcon1, bltalwm, bltamod, bltdmod, bltsize;
bunClear->memoryStartOffsetBytes = WORD_ALIGNED_BYTE_POSITION(screenDefinition->width, x, y); //bunClear->memoryStartOffsetBytes = WORD_ALIGNED_BYTE_POSITION(screenDefinition->width, x, y);
bunClear->memoryStartOffsetBytes = precalcBunInfo->memoryStartOffsetBytes;
bunClear->heightRows = COOL_BUN_HEIGHT; bunClear->heightRows = COOL_BUN_HEIGHT;
bunClear->widthWords = 2 + needsExtraWord; bunClear->widthWords = 2 + needsExtraWord;
bunClear->direction = BLITTER_ASCENDING; bunClear->direction = BLITTER_ASCENDING;
// buns will never interfere with a background so they don't need a mask // buns will never interfere with a background so they don't need a mask
bltcon0 = BLTCON0(0xf0, 1, 0, 0, 1, shift); //bltcon0 = BLTCON0(0xf0, 1, 0, 0, 1, shift);
bltcon1 = BLTCON1(bunClear->direction, shift); //bltcon1 = BLTCON1(bunClear->direction, shift);
//bltdmod = screenDefinition->byteWidth - COOL_BUN_WIDTH_BYTES - (needsExtraWord * 2);
bltcon0 = precalcBunInfo->bltcon0;
bltcon1 = precalcBunInfo->bltcon1;
bltdmod = precalcBunInfo->bltdmod;
if (needsExtraWord) { if (needsExtraWord) {
bltalwm = 0x0000; bltalwm = 0x0000;
@ -228,7 +259,6 @@ void bun_anywhere(
} }
bltamod = -(needsExtraWord * 2); bltamod = -(needsExtraWord * 2);
bltdmod = screenDefinition->byteWidth - COOL_BUN_WIDTH_BYTES - (needsExtraWord * 2);
bltsize = bunClear->widthWords + (bunClear->heightRows << 6); bltsize = bunClear->widthWords + (bunClear->heightRows << 6);
for (plane = 0; plane < 2; ++plane) { for (plane = 0; plane < 2; ++plane) {
@ -252,12 +282,15 @@ void bun_anywhere(
#define ENABLE_RENDER_BUN_CHECKING (0) #define ENABLE_RENDER_BUN_CHECKING (0)
uint16_t screenDefCoolBunWidthCheck;
void renderBun( void renderBun(
int x, int x,
int y, int y,
struct ScreenDefinition *screenDefinition, struct ScreenDefinition *screenDefinition,
struct ActiveScreenBufferDetails *activeScreenBufferDetails, struct ActiveScreenBufferDetails *activeScreenBufferDetails,
struct BunClear *bunClear struct BunClear *bunClear,
struct PrecalcBunInfo *precalcBunInfo
) { ) {
/** /**
* Conditions that will cause the program to crash if met. If your bun * Conditions that will cause the program to crash if met. If your bun
@ -279,15 +312,19 @@ void renderBun(
y, y,
screenDefinition, screenDefinition,
activeScreenBufferDetails, activeScreenBufferDetails,
bunClear bunClear,
precalcBunInfo
); );
} else if (x > screenDefinition->width - COOL_BUN_WIDTH) { //} else if (x > screenDefinition->width - COOL_BUN_WIDTH) {
} else if (x > screenDefCoolBunWidthCheck) {
bun_offRightSide( bun_offRightSide(
x - (screenDefinition->width - COOL_BUN_WIDTH), //x - (screenDefinition->width - COOL_BUN_WIDTH),
x - screenDefCoolBunWidthCheck,
y, y,
screenDefinition, screenDefinition,
activeScreenBufferDetails, activeScreenBufferDetails,
bunClear bunClear,
precalcBunInfo
); );
} else { } else {
bun_anywhere( bun_anywhere(
@ -295,7 +332,8 @@ void renderBun(
y, y,
screenDefinition, screenDefinition,
activeScreenBufferDetails, activeScreenBufferDetails,
bunClear bunClear,
precalcBunInfo
); );
} }
} }
@ -341,6 +379,66 @@ void calculateBunPositions(
short int allBunPositionsByFrame[FRAMES_FOR_SCREEN][BUN_COUNT][2]; short int allBunPositionsByFrame[FRAMES_FOR_SCREEN][BUN_COUNT][2];
void precalculateBunInfoForFrames(
struct ScreenDefinition *screenDefinition
) {
int frame, bun;
int x, y;
uint8_t wordShift, shift, needsExtraWord;
screenDefCoolBunWidthCheck = screenDefinition->width - COOL_BUN_WIDTH;
for (frame = 0; frame < FRAMES_FOR_SCREEN; ++frame) {
for (bun = 0; bun < BUN_COUNT; ++bun) {
x = allBunPositionsByFrame[frame][bun][0];
y = allBunPositionsByFrame[frame][bun][1];
// off left
if (x < 0) {
x = -x;
shift = x & 15;
wordShift = x >> 4;
precalcBunInfo[frame][bun].memoryStartOffsetBytes =
(screenDefinition->byteWidth * (y + COOL_BUN_LAST_ROW)) +
2 - wordShift * 2;
precalcBunInfo[frame][bun].bltcon0 = BLTCON0(0xf0, 1, 0, 0, 1, shift);
precalcBunInfo[frame][bun].bltcon1 = BLTCON1(BLITTER_DESCENDING, shift);
precalcBunInfo[frame][bun].bltdmod =
screenDefinition->byteWidth - 4 +
wordShift * 2;
// off right
} else if (x > screenDefinition->width - COOL_BUN_WIDTH) {
x = x - (screenDefinition->width - COOL_BUN_WIDTH),
wordShift = x >> 4;
shift = x & 15;
precalcBunInfo[frame][bun].memoryStartOffsetBytes =
(y * screenDefinition->byteWidth) +
screenDefinition->byteWidth - COOL_BUN_WIDTH_BYTES +
wordShift * 2;
precalcBunInfo[frame][bun].bltcon0 = BLTCON0(0xf0, 1, 0, 0, 1, shift);
precalcBunInfo[frame][bun].bltcon1 = BLTCON1(BLITTER_ASCENDING, shift);
precalcBunInfo[frame][bun].bltdmod =
screenDefinition->byteWidth - COOL_BUN_WIDTH_BYTES +
wordShift * 2;
// anywhere
} else {
shift = x & 15;
needsExtraWord = shift != 0;
precalcBunInfo[frame][bun].memoryStartOffsetBytes =
WORD_ALIGNED_BYTE_POSITION(screenDefinition->width, x, y);
precalcBunInfo[frame][bun].bltcon0 = BLTCON0(0xf0, 1, 0, 0, 1, shift);
precalcBunInfo[frame][bun].bltcon1 = BLTCON1(BLITTER_ASCENDING, shift);
precalcBunInfo[frame][bun].bltdmod =
screenDefinition->byteWidth - COOL_BUN_WIDTH_BYTES - (needsExtraWord * 2);
}
}
}
}
void calculateAllBunPositions( void calculateAllBunPositions(
struct ScreenDefinition *screenDefinition struct ScreenDefinition *screenDefinition
) { ) {
@ -389,6 +487,7 @@ void setupBunRenderer(
calculateAllBunPositions(screenDefinition); calculateAllBunPositions(screenDefinition);
precalculateBunRenderInfo(); precalculateBunRenderInfo();
precalculateBunBLTALWM(); precalculateBunBLTALWM();
precalculateBunInfoForFrames(screenDefinition);
} }
/** /**
@ -446,7 +545,8 @@ void renderBunFrame(
allBunPositionsByFrame[frame][bun][1], allBunPositionsByFrame[frame][bun][1],
bunRenderer->screenDefinition, bunRenderer->screenDefinition,
bunRenderer->activeScreenBufferDetails, bunRenderer->activeScreenBufferDetails,
&bunClearForScreen[bunRenderer->activeScreenBufferDetails->currentBuffer][bun] &bunClearForScreen[bunRenderer->activeScreenBufferDetails->currentBuffer][bun],
&precalcBunInfo[frame][bun]
); );
} }