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path: root/source/blender/blenkernel/intern/displist_tangent.c
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Diffstat (limited to 'source/blender/blenkernel/intern/displist_tangent.c')
-rw-r--r--source/blender/blenkernel/intern/displist_tangent.c269
1 files changed, 0 insertions, 269 deletions
diff --git a/source/blender/blenkernel/intern/displist_tangent.c b/source/blender/blenkernel/intern/displist_tangent.c
deleted file mode 100644
index eb6bdd8d5e9..00000000000
--- a/source/blender/blenkernel/intern/displist_tangent.c
+++ /dev/null
@@ -1,269 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-
-/** \file
- * \ingroup bke
- */
-
-#include "BLI_math.h"
-#include "BLI_task.h"
-
-#include "BKE_displist.h"
-#include "BKE_displist_tangent.h"
-
-#include "MEM_guardedalloc.h"
-
-/* interface */
-#include "mikktspace.h"
-
-/* -------------------------------------------------------------------- */
-/** \name Internal Types
- * \{ */
-
-typedef struct {
- const DispList *dl;
- float (*tangent)[4]; /* destination */
- /** Face normal for flat shading. */
- float (*fnormals)[3];
- /** Use by surfaces. Size of the surface in faces. */
- int u_len, v_len;
-} SGLSLDisplistToTangent;
-
-/** \} */
-
-/* ---------------------------------------------------------------------- */
-/** \name DL_INDEX3 tangents
- * \{ */
-
-static int dl3_ts_GetNumFaces(const SMikkTSpaceContext *pContext)
-{
- SGLSLDisplistToTangent *dlt = pContext->m_pUserData;
-
- return dlt->dl->parts;
-}
-
-static int dl3_ts_GetNumVertsOfFace(const SMikkTSpaceContext *pContext, const int face_num)
-{
- UNUSED_VARS(pContext, face_num);
-
- return 3;
-}
-
-static void dl3_ts_GetPosition(const SMikkTSpaceContext *pContext,
- float r_co[3],
- const int face_num,
- const int vert_index)
-{
- SGLSLDisplistToTangent *dlt = pContext->m_pUserData;
- const float(*verts)[3] = (float(*)[3])dlt->dl->verts;
- const int(*idx)[3] = (int(*)[3])dlt->dl->index;
-
- copy_v3_v3(r_co, verts[idx[face_num][vert_index]]);
-}
-
-static void dl3_ts_GetTextureCoordinate(const SMikkTSpaceContext *pContext,
- float r_uv[2],
- const int face_num,
- const int vert_index)
-{
- SGLSLDisplistToTangent *dlt = pContext->m_pUserData;
- const int(*idx)[3] = (int(*)[3])dlt->dl->index;
-
- r_uv[0] = idx[face_num][vert_index] / (float)(dlt->dl->nr - 1);
- r_uv[1] = 0.0f;
-}
-
-static void dl3_ts_GetNormal(const SMikkTSpaceContext *pContext,
- float r_no[3],
- const int face_num,
- const int vert_index)
-{
- SGLSLDisplistToTangent *dlt = pContext->m_pUserData;
- UNUSED_VARS(face_num, vert_index);
-
- copy_v3_v3(r_no, dlt->dl->nors);
-}
-
-static void dl3_ts_SetTSpace(const SMikkTSpaceContext *pContext,
- const float fvTangent[3],
- const float fSign,
- const int face_num,
- const int vert_index)
-{
- SGLSLDisplistToTangent *dlt = pContext->m_pUserData;
- UNUSED_VARS(face_num, vert_index);
-
- copy_v3_v3(dlt->tangent[0], fvTangent);
- dlt->tangent[0][3] = fSign;
-}
-
-/** \} */
-
-/* ---------------------------------------------------------------------- */
-/** \name DL_SURF tangents
- * \{ */
-
-static int dlsurf_ts_GetNumFaces(const SMikkTSpaceContext *pContext)
-{
- SGLSLDisplistToTangent *dlt = pContext->m_pUserData;
-
- return dlt->v_len * dlt->u_len;
-}
-
-static int dlsurf_ts_GetNumVertsOfFace(const SMikkTSpaceContext *pContext, const int face_num)
-{
- UNUSED_VARS(pContext, face_num);
-
- return 4;
-}
-
-static int face_to_vert_index(SGLSLDisplistToTangent *dlt,
- const int face_num,
- const int vert_index)
-{
- int u = face_num % dlt->u_len;
- int v = face_num / dlt->u_len;
-
- if (vert_index == 0) {
- u += 1;
- }
- else if (vert_index == 1) {
- u += 1;
- v += 1;
- }
- else if (vert_index == 2) {
- v += 1;
- }
-
- /* Cyclic correction. */
- u = u % dlt->dl->nr;
- v = v % dlt->dl->parts;
-
- return v * dlt->dl->nr + u;
-}
-
-static void dlsurf_ts_GetPosition(const SMikkTSpaceContext *pContext,
- float r_co[3],
- const int face_num,
- const int vert_index)
-{
- SGLSLDisplistToTangent *dlt = pContext->m_pUserData;
- const float(*verts)[3] = (float(*)[3])dlt->dl->verts;
-
- copy_v3_v3(r_co, verts[face_to_vert_index(dlt, face_num, vert_index)]);
-}
-
-static void dlsurf_ts_GetTextureCoordinate(const SMikkTSpaceContext *pContext,
- float r_uv[2],
- const int face_num,
- const int vert_index)
-{
- SGLSLDisplistToTangent *dlt = pContext->m_pUserData;
-
- int idx = face_to_vert_index(dlt, face_num, vert_index);
-
- /* NOTE: For some reason the shading U and V are swapped compared to the
- * one described in the surface format. */
- r_uv[0] = (idx / dlt->dl->nr) / (float)(dlt->v_len);
- r_uv[1] = (idx % dlt->dl->nr) / (float)(dlt->u_len);
-
- if (r_uv[0] == 0.0f && ELEM(vert_index, 1, 2)) {
- r_uv[0] = 1.0f;
- }
- if (r_uv[1] == 0.0f && ELEM(vert_index, 0, 1)) {
- r_uv[1] = 1.0f;
- }
-}
-
-static void dlsurf_ts_GetNormal(const SMikkTSpaceContext *pContext,
- float r_no[3],
- const int face_num,
- const int vert_index)
-{
- SGLSLDisplistToTangent *dlt = pContext->m_pUserData;
- const float(*nors)[3] = (float(*)[3])dlt->dl->nors;
-
- if (dlt->fnormals) {
- copy_v3_v3(r_no, dlt->fnormals[face_num]);
- }
- else {
- copy_v3_v3(r_no, nors[face_to_vert_index(dlt, face_num, vert_index)]);
- }
-}
-
-static void dlsurf_ts_SetTSpace(const SMikkTSpaceContext *pContext,
- const float fvTangent[3],
- const float fSign,
- const int face_num,
- const int vert_index)
-{
- SGLSLDisplistToTangent *dlt = pContext->m_pUserData;
- UNUSED_VARS(face_num, vert_index);
-
- float *r_tan = dlt->tangent[face_num * 4 + vert_index];
- copy_v3_v3(r_tan, fvTangent);
- r_tan[3] = fSign;
-}
-
-/** \} */
-
-/* ---------------------------------------------------------------------- */
-/** \name Entry point
- * \{ */
-
-void BKE_displist_tangent_calc(const DispList *dl, float (*fnormals)[3], float (**r_tangent)[4])
-{
- if (dl->type == DL_INDEX3) {
- /* INDEX3 have only one tangent so we don't need actual allocation. */
- BLI_assert(*r_tangent != NULL);
-
- SGLSLDisplistToTangent mesh2tangent = {
- .tangent = *r_tangent,
- .dl = dl,
- };
- SMikkTSpaceContext sContext = {NULL};
- SMikkTSpaceInterface sInterface = {NULL};
- sContext.m_pUserData = &mesh2tangent;
- sContext.m_pInterface = &sInterface;
- sInterface.m_getNumFaces = dl3_ts_GetNumFaces;
- sInterface.m_getNumVerticesOfFace = dl3_ts_GetNumVertsOfFace;
- sInterface.m_getPosition = dl3_ts_GetPosition;
- sInterface.m_getTexCoord = dl3_ts_GetTextureCoordinate;
- sInterface.m_getNormal = dl3_ts_GetNormal;
- sInterface.m_setTSpaceBasic = dl3_ts_SetTSpace;
- /* 0 if failed */
- genTangSpaceDefault(&sContext);
- }
- else if (dl->type == DL_SURF) {
- SGLSLDisplistToTangent mesh2tangent = {
- .dl = dl,
- .u_len = dl->nr - ((dl->flag & DL_CYCL_U) ? 0 : 1),
- .v_len = dl->parts - ((dl->flag & DL_CYCL_V) ? 0 : 1),
- .fnormals = fnormals,
- };
-
- int loop_len = mesh2tangent.u_len * mesh2tangent.v_len * 4;
-
- if (*r_tangent == NULL) {
- *r_tangent = MEM_mallocN(sizeof(float[4]) * loop_len, "displist tangents");
- }
- mesh2tangent.tangent = *r_tangent;
- SMikkTSpaceContext sContext = {NULL};
- SMikkTSpaceInterface sInterface = {NULL};
- sContext.m_pUserData = &mesh2tangent;
- sContext.m_pInterface = &sInterface;
- sInterface.m_getNumFaces = dlsurf_ts_GetNumFaces;
- sInterface.m_getNumVerticesOfFace = dlsurf_ts_GetNumVertsOfFace;
- sInterface.m_getPosition = dlsurf_ts_GetPosition;
- sInterface.m_getTexCoord = dlsurf_ts_GetTextureCoordinate;
- sInterface.m_getNormal = dlsurf_ts_GetNormal;
- sInterface.m_setTSpaceBasic = dlsurf_ts_SetTSpace;
- /* 0 if failed */
- genTangSpaceDefault(&sContext);
- }
- else {
- /* Unsupported. */
- BLI_assert(0);
- }
-}
-
-/** \} */
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-22 18:23:16 +0300