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mario-kart-casio
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Tiny optimisations with __builtin_expect, maybe not worth having

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Heath Mitchell 2021-11-27 00:42:37 +00:00
parent a739e63f9e
commit 2a13767c4e
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4 changed files with 2 additions and 0 deletions
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build/main.o
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hello-world.bin
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hello-world.g3a
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src/main.cpp
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@ -40,6 +40,7 @@ float fmod(float a, float b) {
#include "../kartsprites.cpp"
unsigned char getTileType(short xPos, short yPos) {
__builtin_expect(xPos < 0 || xPos >= trackImageWidth || yPos < 0 || yPos >= trackImageHeight, 0);
if (xPos < 0 || xPos >= trackImageWidth || yPos < 0 || yPos >= trackImageHeight) {
return 0; // Grass
} else {
@ -86,6 +87,7 @@ unsigned short getScreenPixel(unsigned short x, unsigned short y) {
// If both samples are 0 in the Python, the horizon colour is set but that doesn't seem to be needed
unsigned short newY;
__builtin_expect(x == (int)(LUT_WIDTH / 2), 0);
if (x < (int)(LUT_WIDTH / 2)) {
newY = distortion_correction[x][y - horizon];
} else if (x == (int)(LUT_WIDTH / 2)) {