diff options
Diffstat (limited to 'intern/opensubdiv/internal/opensubdiv_gl_mesh_fvar.cc')
| -rw-r--r-- | intern/opensubdiv/internal/opensubdiv_gl_mesh_fvar.cc | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/intern/opensubdiv/internal/opensubdiv_gl_mesh_fvar.cc b/intern/opensubdiv/internal/opensubdiv_gl_mesh_fvar.cc deleted file mode 100644 index 6efbe93d2d8..00000000000 --- a/intern/opensubdiv/internal/opensubdiv_gl_mesh_fvar.cc +++ /dev/null @@ -1,171 +0,0 @@ -// 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 - -#include "internal/opensubdiv_gl_mesh_fvar.h" - -#include <GL/glew.h> -#include <opensubdiv/far/primvarRefiner.h> - -#include "internal/opensubdiv_util.h" - -namespace opensubdiv_capi { - -//////////////////////////////////////////////////////////////////////////////// -// GLMeshFVarData - -GLMeshFVarData::GLMeshFVarData() : texture_buffer(0), offset_buffer(0) -{ -} - -GLMeshFVarData::~GLMeshFVarData() -{ - release(); -} - -void GLMeshFVarData::release() -{ - if (texture_buffer) { - glDeleteTextures(1, &texture_buffer); - } - if (offset_buffer) { - glDeleteTextures(1, &offset_buffer); - } - texture_buffer = 0; - offset_buffer = 0; - fvar_width = 0; - channel_offsets.clear(); -} - -void GLMeshFVarData::create(const OpenSubdiv::Far::TopologyRefiner *topology_refiner, - const OpenSubdiv::Far::PatchTable *patch_table, - int fvar_width, - const float *fvar_src_data) -{ - release(); - this->fvar_width = fvar_width; - /// Expand fvar data to per-patch array. - const int max_level = topology_refiner->GetMaxLevel(); - const int num_channels = patch_table->GetNumFVarChannels(); - vector<float> data; - int fvar_data_offset = 0; - channel_offsets.resize(num_channels); - for (int channel = 0; channel < num_channels; ++channel) { - OpenSubdiv::Far::ConstIndexArray indices = patch_table->GetFVarValues(channel); - channel_offsets[channel] = data.size(); - data.reserve(data.size() + indices.size() * fvar_width); - for (int fvert = 0; fvert < indices.size(); ++fvert) { - int index = indices[fvert] * fvar_width; - for (int i = 0; i < fvar_width; ++i) { - data.push_back(fvar_src_data[fvar_data_offset + index++]); - } - } - if (topology_refiner->IsUniform()) { - const int num_values_max = topology_refiner->GetLevel(max_level).GetNumFVarValues(channel); - fvar_data_offset += num_values_max * fvar_width; - } - else { - const int num_values_total = topology_refiner->GetNumFVarValuesTotal(channel); - fvar_data_offset += num_values_total * fvar_width; - } - } - GLuint buffer; - glGenBuffers(1, &buffer); - glBindBuffer(GL_ARRAY_BUFFER, buffer); - glBufferData(GL_ARRAY_BUFFER, data.size() * sizeof(float), &data[0], GL_STATIC_DRAW); - glGenTextures(1, &texture_buffer); - glBindTexture(GL_TEXTURE_BUFFER, texture_buffer); - glTexBuffer(GL_TEXTURE_BUFFER, GL_R32F, buffer); - glDeleteBuffers(1, &buffer); - glGenBuffers(1, &buffer); - glBindBuffer(GL_ARRAY_BUFFER, buffer); - glBufferData( - GL_ARRAY_BUFFER, channel_offsets.size() * sizeof(int), &channel_offsets[0], GL_STATIC_DRAW); - glGenTextures(1, &offset_buffer); - glBindTexture(GL_TEXTURE_BUFFER, offset_buffer); - glTexBuffer(GL_TEXTURE_BUFFER, GL_R32I, buffer); - glBindTexture(GL_TEXTURE_BUFFER, 0); - glBindBuffer(GL_ARRAY_BUFFER, 0); -} - -//////////////////////////////////////////////////////////////////////////////// -// Helper functions. - -struct FVarVertex { - float u, v; - - void Clear() - { - u = v = 0.0f; - } - - void AddWithWeight(FVarVertex const &src, float weight) - { - u += weight * src.u; - v += weight * src.v; - } -}; - -void interpolateFVarData(const OpenSubdiv::Far::TopologyRefiner &refiner, - const vector<float> &uvs, - vector<float> *fvar_data) -{ - const int fvar_width = 2; - const int max_level = refiner.GetMaxLevel(); - size_t fvar_data_offset = 0, values_offset = 0; - for (int channel = 0; channel < refiner.GetNumFVarChannels(); ++channel) { - const int num_values = refiner.GetLevel(0).GetNumFVarValues(channel) * 2; - const int num_values_max = refiner.GetLevel(max_level).GetNumFVarValues(channel); - const int num_values_total = refiner.GetNumFVarValuesTotal(channel); - if (num_values_total <= 0) { - continue; - } - OpenSubdiv::Far::PrimvarRefiner primvar_refiner(refiner); - if (refiner.IsUniform()) { - // For uniform we only keep the highest level of refinement. - fvar_data->resize(fvar_data->size() + num_values_max * fvar_width); - vector<FVarVertex> buffer(num_values_total - num_values_max); - FVarVertex *src = &buffer[0]; - memcpy(src, &uvs[values_offset], num_values * sizeof(float)); - // Defer the last level to treat separately with its alternate - // destination. - for (int level = 1; level < max_level; ++level) { - FVarVertex *dst = src + refiner.GetLevel(level - 1).GetNumFVarValues(channel); - primvar_refiner.InterpolateFaceVarying(level, src, dst, channel); - src = dst; - } - FVarVertex *dst = reinterpret_cast<FVarVertex *>(&(*fvar_data)[fvar_data_offset]); - primvar_refiner.InterpolateFaceVarying(max_level, src, dst, channel); - fvar_data_offset += num_values_max * fvar_width; - } - else { - // For adaptive we keep all levels. - fvar_data->resize(fvar_data->size() + num_values_total * fvar_width); - FVarVertex *src = reinterpret_cast<FVarVertex *>(&(*fvar_data)[fvar_data_offset]); - memcpy(src, &uvs[values_offset], num_values * sizeof(float)); - for (int level = 1; level <= max_level; ++level) { - FVarVertex *dst = src + refiner.GetLevel(level - 1).GetNumFVarValues(channel); - primvar_refiner.InterpolateFaceVarying(level, src, dst, channel); - src = dst; - } - fvar_data_offset += num_values_total * fvar_width; - } - values_offset += num_values; - } -} - -} // namespace opensubdiv_capi |