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Diffstat (limited to 'intern/opensubdiv/opensubdiv_capi.h')
| -rw-r--r-- | intern/opensubdiv/opensubdiv_capi.h | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/intern/opensubdiv/opensubdiv_capi.h b/intern/opensubdiv/opensubdiv_capi.h new file mode 100644 index 00000000000..8010c39647d --- /dev/null +++ b/intern/opensubdiv/opensubdiv_capi.h @@ -0,0 +1,151 @@ +/* + * ***** BEGIN GPL LICENSE BLOCK ***** + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * The Original Code is Copyright (C) 2013 Blender Foundation. + * All rights reserved. + * + * Contributor(s): Sergey Sharybin + * + * ***** END GPL LICENSE BLOCK ***** + */ + +#ifndef __OPENSUBDIV_CAPI_H__ +#define __OPENSUBDIV_CAPI_H__ + +#ifdef __cplusplus +extern "C" { +#endif + +// Types declaration. +struct OpenSubdiv_GLMesh; +struct OpenSubdiv_TopologyRefinerDescr; + +typedef struct OpenSubdiv_GLMesh OpenSubdiv_GLMesh; + +#ifdef __cplusplus +struct OpenSubdiv_GLMeshDescr; +typedef struct OpenSubdiv_GLMesh { + int evaluator_type; + OpenSubdiv_GLMeshDescr *descriptor; + OpenSubdiv_TopologyRefinerDescr *topology_refiner; +} OpenSubdiv_GLMesh; +#endif + +// Keep this a bitmask os it's possible to pass available +// evaluators to Blender. +enum { + OPENSUBDIV_EVALUATOR_CPU = (1 << 0), + OPENSUBDIV_EVALUATOR_OPENMP = (1 << 1), + OPENSUBDIV_EVALUATOR_OPENCL = (1 << 2), + OPENSUBDIV_EVALUATOR_CUDA = (1 << 3), + OPENSUBDIV_EVALUATOR_GLSL_TRANSFORM_FEEDBACK = (1 << 4), + OPENSUBDIV_EVALUATOR_GLSL_COMPUTE = (1 << 5), +}; + +enum { + OPENSUBDIV_SCHEME_CATMARK, + OPENSUBDIV_SCHEME_BILINEAR, + OPENSUBDIV_SCHEME_LOOP, +}; + +/* TODO(sergey): Re-name and avoid bad level data access. */ +OpenSubdiv_GLMesh *openSubdiv_createOsdGLMeshFromTopologyRefiner( + struct OpenSubdiv_TopologyRefinerDescr *topology_refiner, + int evaluator_type, + int level, + int subdivide_uvs); + +void openSubdiv_deleteOsdGLMesh(OpenSubdiv_GLMesh *gl_mesh); +unsigned int openSubdiv_getOsdGLMeshPatchIndexBuffer( + OpenSubdiv_GLMesh *gl_mesh); +unsigned int openSubdiv_getOsdGLMeshVertexBuffer(OpenSubdiv_GLMesh *gl_mesh); +void openSubdiv_osdGLMeshUpdateVertexBuffer(OpenSubdiv_GLMesh *gl_mesh, + const float *vertex_data, + int start_vertex, + int num_verts); +void openSubdiv_osdGLMeshRefine(OpenSubdiv_GLMesh *gl_mesh); +void openSubdiv_osdGLMeshSynchronize(OpenSubdiv_GLMesh *gl_mesh); +void openSubdiv_osdGLMeshBindVertexBuffer(OpenSubdiv_GLMesh *gl_mesh); + +const struct OpenSubdiv_TopologyRefinerDescr *openSubdiv_getGLMeshTopologyRefiner( + OpenSubdiv_GLMesh *gl_mesh); + +/* ** Initialize/Deinitialize global OpenGL drawing buffers/GLSL programs ** */ +bool openSubdiv_osdGLDisplayInit(void); +void openSubdiv_osdGLDisplayDeinit(void); + +/* ** Evaluator API ** */ + +struct OpenSubdiv_EvaluatorDescr; +typedef struct OpenSubdiv_EvaluatorDescr OpenSubdiv_EvaluatorDescr; + +/* TODO(sergey): Avoid bad-level data access, */ +OpenSubdiv_EvaluatorDescr *openSubdiv_createEvaluatorDescr( + struct OpenSubdiv_TopologyRefinerDescr *topology_refiner, + int subsurf_level); + +void openSubdiv_deleteEvaluatorDescr(OpenSubdiv_EvaluatorDescr *evaluator_descr); + +void openSubdiv_setEvaluatorCoarsePositions(OpenSubdiv_EvaluatorDescr *evaluator_descr, + float *positions, + int start_vert, + int num_vert); + +void openSubdiv_setEvaluatorVaryingData(OpenSubdiv_EvaluatorDescr *evaluator_descr, + float *varying_data, + int start_vert, + int num_vert); + +void openSubdiv_evaluateLimit(OpenSubdiv_EvaluatorDescr *evaluator_descr, + int osd_face_index, + float face_u, float face_v, + float P[3], + float dPdu[3], + float dPdv[3]); + +void openSubdiv_evaluateVarying(OpenSubdiv_EvaluatorDescr *evaluator_descr, + int osd_face_index, + float face_u, float face_v, + float varying[3]); + +/* ** Actual drawing ** */ + +/* Initialize all the invariants which stays the same for every single path, + * for example lighting model stays untouched for the whole mesh. + * + * TODO(sergey): Some of the stuff could be initialized once for all meshes. + */ +void openSubdiv_osdGLMeshDisplayPrepare(int use_osd_glsl, + int active_uv_index); + +/* Draw specified patches. */ +void openSubdiv_osdGLMeshDisplay(OpenSubdiv_GLMesh *gl_mesh, + int fill_quads, + int start_patch, + int num_patches); + +/* ** Utility functions ** */ +int openSubdiv_supportGPUDisplay(void); +int openSubdiv_getAvailableEvaluators(void); +void openSubdiv_init(void); +void openSubdiv_cleanup(void); + +#ifdef __cplusplus +} +#endif + +#endif // __OPENSUBDIV_CAPI_H__ |