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This commit is contained in:
Dominic Masters
2025-03-02 13:27:29 -06:00
parent c8abdcb82e
commit 639da129f6
8 changed files with 152 additions and 11 deletions
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6
src/duskgl/display/shader/data/entities.c
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@ -27,8 +27,10 @@ void entitiesUpdate() {
entitiesdataent_t *dst = &ENTITIES_DATA.entities[i];
// Copy position data.
assertTrue(
(&src->subY - &src->x) + sizeof(uint8_t) == sizeof(uint_t),
assertMemoryRangeMatches(
&src->x,
&src->direction,
sizeof(uint_t),
"Entity data is not packed correctly any more."
);
memcpy(&dst->position, &src->x, sizeof(uint_t));

4
src/duskgl/display/shader/data/entities.glsl
View File

@ -26,8 +26,8 @@ vec2 entityGetVertice(uint instanceIndex, uint indiceIndex) {
uint x = packedGetU8(0u, entities[instanceIndex].position);
uint y = packedGetU8(1u, entities[instanceIndex].position);
uint subX = packedGetU8(2u, entities[instanceIndex].position);
uint subY = packedGetU8(3u, entities[instanceIndex].position);
int subX = packedGetI8(2u, entities[instanceIndex].position);
int subY = packedGetI8(3u, entities[instanceIndex].position);
vert.x += float(x);
vert.y += float(y);

5
src/duskgl/display/shader/fragments/packed.glsl
View File

@ -5,4 +5,9 @@
uint packedGetU8(uint position, uint data) {
return (data >> (position * 8u)) & 0xFFu;
}
int packedGetI8(uint position, uint data) {
int shift = int(position * 8u);
return int(data << (24 - shift)) >> 24;
}