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