1 files changed, 150 insertions, 0 deletions
diff --git a/vendor/gioui.org/shader/piet/tile.h b/vendor/gioui.org/shader/piet/tile.h
new file mode 100644
index 0000000..e11329c
--- /dev/null
+++ b/vendor/gioui.org/shader/piet/tile.h
@@ -0,0 +1,150 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
+
+// Code auto-generated by piet-gpu-derive
+
+struct PathRef {
+    uint offset;
+};
+
+struct TileRef {
+    uint offset;
+};
+
+struct TileSegRef {
+    uint offset;
+};
+
+struct TransformSegRef {
+    uint offset;
+};
+
+struct Path {
+    uvec4 bbox;
+    TileRef tiles;
+};
+
+#define Path_size 12
+
+PathRef Path_index(PathRef ref, uint index) {
+    return PathRef(ref.offset + index * Path_size);
+}
+
+struct Tile {
+    TileSegRef tile;
+    int backdrop;
+};
+
+#define Tile_size 8
+
+TileRef Tile_index(TileRef ref, uint index) {
+    return TileRef(ref.offset + index * Tile_size);
+}
+
+struct TileSeg {
+    vec2 origin;
+    vec2 vector;
+    float y_edge;
+    TileSegRef next;
+};
+
+#define TileSeg_size 24
+
+TileSegRef TileSeg_index(TileSegRef ref, uint index) {
+    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) {
+    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);
+    Path s;
+    s.bbox = uvec4(raw0 & 0xffff, raw0 >> 16, raw1 & 0xffff, raw1 >> 16);
+    s.tiles = TileRef(raw2);
+    return s;
+}
+
+void Path_write(Alloc a, PathRef ref, Path s) {
+    uint ix = ref.offset >> 2;
+    write_mem(a, ix + 0, s.bbox.x | (s.bbox.y << 16));
+    write_mem(a, ix + 1, s.bbox.z | (s.bbox.w << 16));
+    write_mem(a, ix + 2, s.tiles.offset);
+}
+
+Tile Tile_read(Alloc a, TileRef ref) {
+    uint ix = ref.offset >> 2;
+    uint raw0 = read_mem(a, ix + 0);
+    uint raw1 = read_mem(a, ix + 1);
+    Tile s;
+    s.tile = TileSegRef(raw0);
+    s.backdrop = int(raw1);
+    return s;
+}
+
+void Tile_write(Alloc a, TileRef ref, Tile s) {
+    uint ix = ref.offset >> 2;
+    write_mem(a, ix + 0, s.tile.offset);
+    write_mem(a, ix + 1, uint(s.backdrop));
+}
+
+TileSeg TileSeg_read(Alloc a, TileSegRef 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);
+    TileSeg s;
+    s.origin = vec2(uintBitsToFloat(raw0), uintBitsToFloat(raw1));
+    s.vector = vec2(uintBitsToFloat(raw2), uintBitsToFloat(raw3));
+    s.y_edge = uintBitsToFloat(raw4);
+    s.next = TileSegRef(raw5);
+    return s;
+}
+
+void TileSeg_write(Alloc a, TileSegRef ref, TileSeg s) {
+    uint ix = ref.offset >> 2;
+    write_mem(a, ix + 0, floatBitsToUint(s.origin.x));
+    write_mem(a, ix + 1, floatBitsToUint(s.origin.y));
+    write_mem(a, ix + 2, floatBitsToUint(s.vector.x));
+    write_mem(a, ix + 3, floatBitsToUint(s.vector.y));
+    write_mem(a, ix + 4, floatBitsToUint(s.y_edge));
+    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));
+}
+