godotengine/godot
1
0
Fork 0
mirror of https://github.com/godotengine/godot.git synced 2025-11-04 12:00:25 +00:00
Code Releases Wiki Activity

Octahedral Normal/Tangent Compression

Browse Source 
Implementation of Octahedral normal compression into Godot 4.0
This commit is contained in:
Omar El Sheikh
2022-02-22 18:10:09 -05:00
parent f2a6168414
commit 78881b3cc3
7 changed files with 112 additions and 137 deletions
Download Patch File Download Diff File Expand all files Collapse all files

49
servers/rendering_server.cpp
View File

@@ -398,16 +398,14 @@ Error RenderingServer::_surface_set_data(Array p_arrays, uint32_t p_format, uint
const Vector3 *src = array.ptr();
for (int i = 0; i < p_vertex_array_len; i++) {
Vector3 n = src[i] * Vector3(0.5, 0.5, 0.5) + Vector3(0.5, 0.5, 0.5);
Vector2 res = src[i].octahedron_encode();
int16_t vector[2] = {
(int16_t)CLAMP(res.x * 65535, 0, 65535),
(int16_t)CLAMP(res.y * 65535, 0, 65535),
};
uint32_t value = 0;
value |= CLAMP(int(n.x * 1023.0), 0, 1023);
value |= CLAMP(int(n.y * 1023.0), 0, 1023) << 10;
value |= CLAMP(int(n.z * 1023.0), 0, 1023) << 20;
memcpy(&vw[p_offsets[ai] + i * p_vertex_stride], &value, 4);
memcpy(&vw[p_offsets[ai] + i * p_vertex_stride], vector, 4);
}
} break;
case RS::ARRAY_TANGENT: {
@@ -416,33 +414,32 @@ Error RenderingServer::_surface_set_data(Array p_arrays, uint32_t p_format, uint
if (type == Variant::PACKED_FLOAT32_ARRAY) {
Vector<float> array = p_arrays[ai];
ERR_FAIL_COND_V(array.size() != p_vertex_array_len * 4, ERR_INVALID_PARAMETER);
const float *src = array.ptr();
const float *src_ptr = array.ptr();
for (int i = 0; i < p_vertex_array_len; i++) {
uint32_t value = 0;
value |= CLAMP(int((src[i * 4 + 0] * 0.5 + 0.5) * 1023.0), 0, 1023);
value |= CLAMP(int((src[i * 4 + 1] * 0.5 + 0.5) * 1023.0), 0, 1023) << 10;
value |= CLAMP(int((src[i * 4 + 2] * 0.5 + 0.5) * 1023.0), 0, 1023) << 20;
if (src[i * 4 + 3] > 0) {
value |= 3UL << 30;
}
const Vector3 src(src_ptr[i * 4 + 0], src_ptr[i * 4 + 1], src_ptr[i * 4 + 2]);
Vector2 res = src.octahedron_tangent_encode(src_ptr[i * 4 + 3]);
int16_t vector[2] = {
(int16_t)CLAMP(res.x * 65535, 0, 65535),
(int16_t)CLAMP(res.y * 65535, 0, 65535),
};
memcpy(&vw[p_offsets[ai] + i * p_vertex_stride], &value, 4);
memcpy(&vw[p_offsets[ai] + i * p_vertex_stride], vector, 4);
}
} else { // PACKED_FLOAT64_ARRAY
Vector<double> array = p_arrays[ai];
ERR_FAIL_COND_V(array.size() != p_vertex_array_len * 4, ERR_INVALID_PARAMETER);
const double *src = array.ptr();
const double *src_ptr = array.ptr();
for (int i = 0; i < p_vertex_array_len; i++) {
uint32_t value = 0;
value |= CLAMP(int((src[i * 4 + 0] * 0.5 + 0.5) * 1023.0), 0, 1023);
value |= CLAMP(int((src[i * 4 + 1] * 0.5 + 0.5) * 1023.0), 0, 1023) << 10;
value |= CLAMP(int((src[i * 4 + 2] * 0.5 + 0.5) * 1023.0), 0, 1023) << 20;
if (src[i * 4 + 3] > 0) {
value |= 3UL << 30;
}
memcpy(&vw[p_offsets[ai] + i * p_vertex_stride], &value, 4);
const Vector3 src(src_ptr[i * 4 + 0], src_ptr[i * 4 + 1], src_ptr[i * 4 + 2]);
Vector2 res = src.octahedron_tangent_encode(src_ptr[i * 4 + 3]);
int16_t vector[2] = {
(int16_t)CLAMP(res.x * 65535, 0, 65535),
(int16_t)CLAMP(res.y * 65535, 0, 65535),
};
memcpy(&vw[p_offsets[ai] + i * p_vertex_stride], vector, 4);
}
}
} break;