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Diffstat (limited to 'intern/opensubdiv/opensubdiv_gl_mesh_capi.h')
-rw-r--r-- | intern/opensubdiv/opensubdiv_gl_mesh_capi.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/intern/opensubdiv/opensubdiv_gl_mesh_capi.h b/intern/opensubdiv/opensubdiv_gl_mesh_capi.h new file mode 100644 index 00000000000..971f6b9dcd3 --- /dev/null +++ b/intern/opensubdiv/opensubdiv_gl_mesh_capi.h @@ -0,0 +1,92 @@ +// Copyright 2013 Blender Foundation. All rights reserved. +// +// 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. +// +// Author: Sergey Sharybin + +#ifndef OPENSUBDIV_CAPI_GL_MESH_CAPI_H_ +#define OPENSUBDIV_CAPI_GL_MESH_CAPI_H_ + +#include <stdint.h> // for bool + +#include "opensubdiv_capi_type.h" + +#ifdef __cplusplus +extern "C" { +#endif + +struct OpenSubdiv_GLMeshInternal; + +// Mesh which is displayable in OpenGL context. +typedef struct OpenSubdiv_GLMesh { + ////////////////////////////////////////////////////////////////////////////// + // Subdivision/topology part. + + // Returns the GL index buffer containing the patch control vertices. + unsigned int (*getPatchIndexBuffer)(struct OpenSubdiv_GLMesh* gl_mesh); + + // Bind GL buffer which contains vertices (VBO). + // TODO(sergey): Is this a coarse vertices? + void (*bindVertexBuffer)(struct OpenSubdiv_GLMesh* gl_mesh); + + // Set coarse positions from a continuous array of coordinates. + void (*setCoarsePositions)(struct OpenSubdiv_GLMesh* gl_mesh, + const float* positions, + const int start_vertex, + const int num_vertices); + // TODO(sergey): setCoarsePositionsFromBuffer(). + + // Refine after coarse positions update. + void (*refine)(struct OpenSubdiv_GLMesh* gl_mesh); + + // Synchronize after coarse positions update and refine. + void (*synchronize)(struct OpenSubdiv_GLMesh* gl_mesh); + + ////////////////////////////////////////////////////////////////////////////// + // Drawing part. + + // Prepare mesh for display. + void (*prepareDraw)(struct OpenSubdiv_GLMesh* gl_mesh, + const bool use_osd_glsl, + const int active_uv_index); + + // Draw given range of patches. + // + // If fill_quads is false, then patches are drawn in wireframe. + void (*drawPatches)(struct OpenSubdiv_GLMesh *gl_mesh, + const bool fill_quads, + const int start_patch, const int num_patches); + + // Internal storage for the use in this module only. + // + // Tease: This contains an actual OpenSubdiv's Mesh object. + struct OpenSubdiv_GLMeshInternal* internal; +} OpenSubdiv_GLMesh; + +OpenSubdiv_GLMesh* openSubdiv_createOsdGLMeshFromTopologyRefiner( + struct OpenSubdiv_TopologyRefiner* topology_refiner, + eOpenSubdivEvaluator evaluator_type); + +void openSubdiv_deleteOsdGLMesh(OpenSubdiv_GLMesh *gl_mesh); + +// Global resources needed for GL mesh drawing. +bool openSubdiv_initGLMeshDrawingResources(void); +void openSubdiv_deinitGLMeshDrawingResources(void); + +#ifdef __cplusplus +} +#endif + +#endif // OPENSUBDIV_CAPI_GL_MESH_CAPI_H_ |