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-rw-r--r--scene/resources/mesh.cpp159
1 files changed, 53 insertions, 106 deletions
diff --git a/scene/resources/mesh.cpp b/scene/resources/mesh.cpp
index ec9db89794..1f75d4a323 100644
--- a/scene/resources/mesh.cpp
+++ b/scene/resources/mesh.cpp
@@ -32,11 +32,10 @@
#include "core/math/convex_hull.h"
#include "core/templates/pair.h"
+#include "scene/resources/surface_tool.h"
+
#include "scene/resources/concave_polygon_shape_3d.h"
#include "scene/resources/convex_polygon_shape_3d.h"
-#include "surface_tool.h"
-
-#include <stdlib.h>
Mesh::ConvexDecompositionFunc Mesh::convex_decomposition_function = nullptr;
@@ -201,7 +200,9 @@ Ref<TriangleMesh> Mesh::generate_triangle_mesh() const {
continue;
}
int len = (surface_get_format(i) & ARRAY_FORMAT_INDEX) ? surface_get_array_index_len(i) : surface_get_array_len(i);
- if ((primitive == PRIMITIVE_TRIANGLES && (len == 0 || (len % 3) != 0)) || (primitive == PRIMITIVE_TRIANGLE_STRIP && len < 3)) {
+ if ((primitive == PRIMITIVE_TRIANGLES && (len == 0 || (len % 3) != 0)) ||
+ (primitive == PRIMITIVE_TRIANGLE_STRIP && len < 3) ||
+ (surface_get_format(i) & ARRAY_FLAG_USES_EMPTY_VERTEX_ARRAY)) {
// Error was already shown, just skip (including zero).
continue;
}
@@ -211,6 +212,7 @@ Ref<TriangleMesh> Mesh::generate_triangle_mesh() const {
int vc = surface_get_array_len(i);
Vector<Vector3> vertices = a[ARRAY_VERTEX];
+ ERR_FAIL_COND_V(vertices.is_empty(), Ref<TriangleMesh>());
const Vector3 *vr = vertices.ptr();
int32_t from_index = widx / 3;
@@ -863,27 +865,6 @@ static Mesh::PrimitiveType _old_primitives[7] = {
};
#endif // DISABLE_DEPRECATED
-// Convert Octahedron-mapped normalized vector back to Cartesian
-// Assumes normalized format (elements of v within range [-1, 1])
-Vector3 _oct_to_norm(const Vector2 v) {
- Vector3 res(v.x, v.y, 1 - (Math::absf(v.x) + Math::absf(v.y)));
- float t = MAX(-res.z, 0.0f);
- res.x += t * -SIGN(res.x);
- res.y += t * -SIGN(res.y);
- return res.normalized();
-}
-
-// Convert Octahedron-mapped normalized tangent vector back to Cartesian
-// out_sign provides the direction for the original cartesian tangent
-// Assumes normalized format (elements of v within range [-1, 1])
-Vector3 _oct_to_tangent(const Vector2 v, float *out_sign) {
- Vector2 v_decompressed = v;
- v_decompressed.y = Math::absf(v_decompressed.y) * 2 - 1;
- Vector3 res = _oct_to_norm(v_decompressed);
- *out_sign = SIGN(v[1]);
- return res;
-}
-
void _fix_array_compatibility(const Vector<uint8_t> &p_src, uint32_t p_old_format, uint32_t p_new_format, uint32_t p_elements, Vector<uint8_t> &vertex_data, Vector<uint8_t> &attribute_data, Vector<uint8_t> &skin_data) {
uint32_t dst_vertex_stride;
uint32_t dst_attribute_stride;
@@ -954,127 +935,93 @@ void _fix_array_compatibility(const Vector<uint8_t> &p_src, uint32_t p_old_forma
if ((p_old_format & OLD_ARRAY_COMPRESS_NORMAL) && (p_old_format & OLD_ARRAY_FORMAT_TANGENT) && (p_old_format & OLD_ARRAY_COMPRESS_TANGENT)) {
for (uint32_t i = 0; i < p_elements; i++) {
const int8_t *src = (const int8_t *)&src_vertex_ptr[i * src_vertex_stride + src_offset];
- uint32_t *dst = (uint32_t *)&dst_vertex_ptr[i * dst_vertex_stride + dst_offsets[Mesh::ARRAY_NORMAL]];
- const Vector2 src_vec(src[0] / 127.0f, src[1] / 127.0f);
-
- const Vector3 res = _oct_to_norm(src_vec) * Vector3(0.5, 0.5, 0.5) + Vector3(0.5, 0.5, 0.5);
- *dst = 0;
- *dst |= CLAMP(int(res.x * 1023.0f), 0, 1023);
- *dst |= CLAMP(int(res.y * 1023.0f), 0, 1023) << 10;
- *dst |= CLAMP(int(res.z * 1023.0f), 0, 1023) << 20;
+ int16_t *dst = (int16_t *)&dst_vertex_ptr[i * dst_vertex_stride + dst_offsets[Mesh::ARRAY_NORMAL]];
+
+ dst[0] = (int16_t)CLAMP(src[0] / 127.0f * 32767, -32768, 32767);
+ dst[1] = (int16_t)CLAMP(src[1] / 127.0f * 32767, -32768, 32767);
}
- src_offset += sizeof(int8_t) * 2;
+ src_offset += sizeof(int16_t) * 2;
} else {
for (uint32_t i = 0; i < p_elements; i++) {
const int16_t *src = (const int16_t *)&src_vertex_ptr[i * src_vertex_stride + src_offset];
- uint32_t *dst = (uint32_t *)&dst_vertex_ptr[i * dst_vertex_stride + dst_offsets[Mesh::ARRAY_NORMAL]];
- const Vector2 src_vec(src[0] / 32767.0f, src[1] / 32767.0f);
-
- const Vector3 res = _oct_to_norm(src_vec) * Vector3(0.5, 0.5, 0.5) + Vector3(0.5, 0.5, 0.5);
- *dst = 0;
- *dst |= CLAMP(int(res.x * 1023.0f), 0, 1023);
- *dst |= CLAMP(int(res.y * 1023.0f), 0, 1023) << 10;
- *dst |= CLAMP(int(res.z * 1023.0f), 0, 1023) << 20;
+ int16_t *dst = (int16_t *)&dst_vertex_ptr[i * dst_vertex_stride + dst_offsets[Mesh::ARRAY_NORMAL]];
+
+ dst[0] = src[0];
+ dst[1] = src[1];
}
src_offset += sizeof(int16_t) * 2;
}
} else { // No Octahedral compression
if (p_old_format & OLD_ARRAY_COMPRESS_NORMAL) {
- const float multiplier = 1.f / 127.f * 1023.0f;
-
for (uint32_t i = 0; i < p_elements; i++) {
const int8_t *src = (const int8_t *)&src_vertex_ptr[i * src_vertex_stride + src_offset];
- uint32_t *dst = (uint32_t *)&dst_vertex_ptr[i * dst_vertex_stride + dst_offsets[Mesh::ARRAY_NORMAL]];
+ const Vector3 original_normal(src[0], src[1], src[2]);
+ Vector2 res = original_normal.octahedron_encode();
- *dst = 0;
- *dst |= CLAMP(int(src[0] * multiplier), 0, 1023);
- *dst |= CLAMP(int(src[1] * multiplier), 0, 1023) << 10;
- *dst |= CLAMP(int(src[2] * multiplier), 0, 1023) << 20;
+ uint16_t *dst = (uint16_t *)&dst_vertex_ptr[i * dst_vertex_stride + dst_offsets[Mesh::ARRAY_NORMAL]];
+ dst[0] = (uint16_t)CLAMP(res.x * 65535, 0, 65535);
+ dst[1] = (uint16_t)CLAMP(res.y * 65535, 0, 65535);
}
- src_offset += sizeof(uint32_t);
+ src_offset += sizeof(uint16_t) * 2;
} else {
for (uint32_t i = 0; i < p_elements; i++) {
const float *src = (const float *)&src_vertex_ptr[i * src_vertex_stride + src_offset];
- uint32_t *dst = (uint32_t *)&dst_vertex_ptr[i * dst_vertex_stride + dst_offsets[Mesh::ARRAY_NORMAL]];
+ const Vector3 original_normal(src[0], src[1], src[2]);
+ Vector2 res = original_normal.octahedron_encode();
- *dst = 0;
- *dst |= CLAMP(int(src[0] * 1023.0), 0, 1023);
- *dst |= CLAMP(int(src[1] * 1023.0), 0, 1023) << 10;
- *dst |= CLAMP(int(src[2] * 1023.0), 0, 1023) << 20;
+ uint16_t *dst = (uint16_t *)&dst_vertex_ptr[i * dst_vertex_stride + dst_offsets[Mesh::ARRAY_NORMAL]];
+ dst[0] = (uint16_t)CLAMP(res.x * 65535, 0, 65535);
+ dst[1] = (uint16_t)CLAMP(res.y * 65535, 0, 65535);
}
- src_offset += sizeof(float) * 3;
+ src_offset += sizeof(uint16_t) * 2;
}
}
} break;
case OLD_ARRAY_TANGENT: {
if (p_old_format & OLD_ARRAY_FLAG_USE_OCTAHEDRAL_COMPRESSION) {
- if (p_old_format & OLD_ARRAY_COMPRESS_TANGENT) { // int8
+ if (p_old_format & OLD_ARRAY_COMPRESS_TANGENT) { // int8 SNORM -> uint16 UNORM
for (uint32_t i = 0; i < p_elements; i++) {
const int8_t *src = (const int8_t *)&src_vertex_ptr[i * src_vertex_stride + src_offset];
- uint32_t *dst = (uint32_t *)&dst_vertex_ptr[i * dst_vertex_stride + dst_offsets[Mesh::ARRAY_TANGENT]];
- const Vector2 src_vec(src[0] / 127.0f, src[1] / 127.0f);
- float out_sign;
- const Vector3 res = _oct_to_tangent(src_vec, &out_sign) * Vector3(0.5, 0.5, 0.5) + Vector3(0.5, 0.5, 0.5);
-
- *dst = 0;
- *dst |= CLAMP(int(res.x * 1023.0), 0, 1023);
- *dst |= CLAMP(int(res.y * 1023.0), 0, 1023) << 10;
- *dst |= CLAMP(int(res.z * 1023.0), 0, 1023) << 20;
- if (out_sign > 0) {
- *dst |= 3 << 30;
- }
+ uint16_t *dst = (uint16_t *)&dst_vertex_ptr[i * dst_vertex_stride + dst_offsets[Mesh::ARRAY_TANGENT]];
+
+ dst[0] = (uint16_t)CLAMP((src[0] / 127.0f * .5f + .5f) * 65535, 0, 65535);
+ dst[1] = (uint16_t)CLAMP((src[1] / 127.0f * .5f + .5f) * 65535, 0, 65535);
}
- src_offset += sizeof(int8_t) * 2;
- } else { // int16
+ src_offset += sizeof(uint16_t) * 2;
+ } else { // int16 SNORM -> uint16 UNORM
for (uint32_t i = 0; i < p_elements; i++) {
const int16_t *src = (const int16_t *)&src_vertex_ptr[i * src_vertex_stride + src_offset];
- uint32_t *dst = (uint32_t *)&dst_vertex_ptr[i * dst_vertex_stride + dst_offsets[Mesh::ARRAY_TANGENT]];
- const Vector2 src_vec(src[0] / 32767.0f, src[1] / 32767.0f);
- float out_sign;
- Vector3 res = _oct_to_tangent(src_vec, &out_sign) * Vector3(0.5, 0.5, 0.5) + Vector3(0.5, 0.5, 0.5);
-
- *dst = 0;
- *dst |= CLAMP(int(res.x * 1023.0), 0, 1023);
- *dst |= CLAMP(int(res.y * 1023.0), 0, 1023) << 10;
- *dst |= CLAMP(int(res.z * 1023.0), 0, 1023) << 20;
- if (out_sign > 0) {
- *dst |= 3 << 30;
- }
+ uint16_t *dst = (uint16_t *)&dst_vertex_ptr[i * dst_vertex_stride + dst_offsets[Mesh::ARRAY_TANGENT]];
+
+ dst[0] = (uint16_t)CLAMP((src[0] / 32767.0f * .5f + .5f) * 65535, 0, 65535);
+ dst[1] = (uint16_t)CLAMP((src[1] / 32767.0f * .5f + .5f) * 65535, 0, 65535);
}
- src_offset += sizeof(int16_t) * 2;
+ src_offset += sizeof(uint16_t) * 2;
}
} else { // No Octahedral compression
if (p_old_format & OLD_ARRAY_COMPRESS_TANGENT) {
- const float multiplier = 1.f / 127.f * 1023.0f;
-
for (uint32_t i = 0; i < p_elements; i++) {
const int8_t *src = (const int8_t *)&src_vertex_ptr[i * src_vertex_stride + src_offset];
- uint32_t *dst = (uint32_t *)&dst_vertex_ptr[i * dst_vertex_stride + dst_offsets[Mesh::ARRAY_TANGENT]];
-
- *dst = 0;
- *dst |= CLAMP(int(src[0] * multiplier), 0, 1023);
- *dst |= CLAMP(int(src[1] * multiplier), 0, 1023) << 10;
- *dst |= CLAMP(int(src[2] * multiplier), 0, 1023) << 20;
- if (src[3] > 0) {
- *dst |= 3 << 30;
- }
+ const Vector3 original_tangent(src[0], src[1], src[2]);
+ Vector2 res = original_tangent.octahedron_tangent_encode(src[3]);
+
+ uint16_t *dst = (uint16_t *)&dst_vertex_ptr[i * dst_vertex_stride + dst_offsets[Mesh::ARRAY_NORMAL]];
+ dst[0] = (uint16_t)CLAMP(res.x * 65535, 0, 65535);
+ dst[1] = (uint16_t)CLAMP(res.y * 65535, 0, 65535);
}
- src_offset += sizeof(uint32_t);
+ src_offset += sizeof(uint16_t) * 2;
} else {
for (uint32_t i = 0; i < p_elements; i++) {
const float *src = (const float *)&src_vertex_ptr[i * src_vertex_stride + src_offset];
- uint32_t *dst = (uint32_t *)&dst_vertex_ptr[i * dst_vertex_stride + dst_offsets[Mesh::ARRAY_TANGENT]];
-
- *dst = 0;
- *dst |= CLAMP(int(src[0] * 1023.0), 0, 1023);
- *dst |= CLAMP(int(src[1] * 1023.0), 0, 1023) << 10;
- *dst |= CLAMP(int(src[2] * 1023.0), 0, 1023) << 20;
- if (src[3] > 0) {
- *dst |= 3 << 30;
- }
+ const Vector3 original_tangent(src[0], src[1], src[2]);
+ Vector2 res = original_tangent.octahedron_tangent_encode(src[3]);
+
+ uint16_t *dst = (uint16_t *)&dst_vertex_ptr[i * dst_vertex_stride + dst_offsets[Mesh::ARRAY_NORMAL]];
+ dst[0] = (uint16_t)CLAMP(res.x * 65535, 0, 65535);
+ dst[1] = (uint16_t)CLAMP(res.y * 65535, 0, 65535);
}
- src_offset += sizeof(float) * 4;
+ src_offset += sizeof(uint16_t) * 2;
}
}
} break;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 01:21:35 +0000