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restore tile.h to maintain sync with tile.rs

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This commit is contained in:
Chad Brokaw 2022-07-16 16:48:04 -04:00
parent 8943fa7ea6
commit 2c258363ad
1 changed files with 38 additions and 0 deletions
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38
piet-gpu/shader/tile.h
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@ -14,6 +14,10 @@ struct TileSegRef {
uint offset; uint offset;
}; };
struct TransformSegRef {
uint offset;
};
struct Path { struct Path {
uvec4 bbox; uvec4 bbox;
TileRef tiles; TileRef tiles;
@ -49,6 +53,17 @@ TileSegRef TileSeg_index(TileSegRef ref, uint index) {
return TileSegRef(ref.offset + index * TileSeg_size); return TileSegRef(ref.offset + index * TileSeg_size);
} }
struct TransformSeg {
vec4 mat;
vec2 translate;
};
#define TransformSeg_size 24
TransformSegRef TransformSeg_index(TransformSegRef ref, uint index) {
return TransformSegRef(ref.offset + index * TransformSeg_size);
}
Path Path_read(Alloc a, PathRef ref) { Path Path_read(Alloc a, PathRef ref) {
uint ix = ref.offset >> 2; uint ix = ref.offset >> 2;
uint raw0 = read_mem(a, ix + 0); uint raw0 = read_mem(a, ix + 0);
@ -109,3 +124,26 @@ void TileSeg_write(Alloc a, TileSegRef ref, TileSeg s) {
write_mem(a, ix + 5, s.next.offset); write_mem(a, ix + 5, s.next.offset);
} }
TransformSeg TransformSeg_read(Alloc a, TransformSegRef ref) {
uint ix = ref.offset >> 2;
uint raw0 = read_mem(a, ix + 0);
uint raw1 = read_mem(a, ix + 1);
uint raw2 = read_mem(a, ix + 2);
uint raw3 = read_mem(a, ix + 3);
uint raw4 = read_mem(a, ix + 4);
uint raw5 = read_mem(a, ix + 5);
TransformSeg s;
s.mat = vec4(uintBitsToFloat(raw0), uintBitsToFloat(raw1), uintBitsToFloat(raw2), uintBitsToFloat(raw3));
s.translate = vec2(uintBitsToFloat(raw4), uintBitsToFloat(raw5));
return s;
}
void TransformSeg_write(Alloc a, TransformSegRef ref, TransformSeg s) {
uint ix = ref.offset >> 2;
write_mem(a, ix + 0, floatBitsToUint(s.mat.x));
write_mem(a, ix + 1, floatBitsToUint(s.mat.y));
write_mem(a, ix + 2, floatBitsToUint(s.mat.z));
write_mem(a, ix + 3, floatBitsToUint(s.mat.w));
write_mem(a, ix + 4, floatBitsToUint(s.translate.x));
write_mem(a, ix + 5, floatBitsToUint(s.translate.y));
}