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-rw-r--r--indra/newview/llmeshreduction.cpp272
1 files changed, 0 insertions, 272 deletions
diff --git a/indra/newview/llmeshreduction.cpp b/indra/newview/llmeshreduction.cpp
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index 14e8dd37b4..0000000000
--- a/indra/newview/llmeshreduction.cpp
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-/**
- * @file llmeshreduction.cpp
- * @brief LLMeshReduction class implementation
- *
- * $LicenseInfo:firstyear=2004&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
- * $/LicenseInfo$
- */
-
-#include "llviewerprecompiledheaders.h"
-
-#include "llmeshreduction.h"
-#include "llgl.h"
-#include "llvertexbuffer.h"
-
-#include "glod/glod.h"
-
-
-#if 0 //not used ?
-
-void create_vertex_buffers_from_model(LLModel* model, std::vector<LLPointer <LLVertexBuffer> >& vertex_buffers)
-{
-#if 0 //VECTORIZE THIS ?
- vertex_buffers.clear();
-
- for (S32 i = 0; i < model->getNumVolumeFaces(); ++i)
- {
- const LLVolumeFace &vf = model->getVolumeFace(i);
- U32 num_vertices = vf.mNumVertices;
- U32 num_indices = vf.mNumIndices;
-
- if (!num_vertices || ! num_indices)
- {
- continue;
- }
-
- LLVertexBuffer* vb =
- new LLVertexBuffer(LLVertexBuffer::MAP_VERTEX | LLVertexBuffer::MAP_NORMAL | LLVertexBuffer::MAP_TEXCOORD0, 0);
-
- vb->allocateBuffer(num_vertices, num_indices, TRUE);
-
- LLStrider<LLVector3> vertex_strider;
- LLStrider<LLVector3> normal_strider;
- LLStrider<LLVector2> tc_strider;
- LLStrider<U16> index_strider;
-
- vb->getVertexStrider(vertex_strider);
- vb->getNormalStrider(normal_strider);
- vb->getTexCoord0Strider(tc_strider);
-
- vb->getIndexStrider(index_strider);
-
- // build vertices and normals
- for (U32 i = 0; (S32)i < num_vertices; i++)
- {
- *(vertex_strider++) = vf.mVertices[i].mPosition;
- *(tc_strider++) = vf.mVertices[i].mTexCoord;
- LLVector3 normal = vf.mVertices[i].mNormal;
- normal.normalize();
- *(normal_strider++) = normal;
- }
-
- // build indices
- for (U32 i = 0; i < num_indices; i++)
- {
- *(index_strider++) = vf.mIndices[i];
- }
-
-
- vertex_buffers.push_back(vb);
- }
-#endif
-}
-
-void create_glod_object_from_vertex_buffers(S32 object, S32 group, std::vector<LLPointer <LLVertexBuffer> >& vertex_buffers)
-{
- glodNewGroup(group);
- stop_gloderror();
- glodNewObject(object, group, GLOD_DISCRETE);
- stop_gloderror();
-
- for (U32 i = 0; i < vertex_buffers.size(); ++i)
- {
- vertex_buffers[i]->setBuffer(LLVertexBuffer::MAP_VERTEX | LLVertexBuffer::MAP_NORMAL | LLVertexBuffer::MAP_TEXCOORD0);
-
- U32 num_indices = vertex_buffers[i]->getNumIndices();
-
- if (num_indices > 2)
- {
- glodInsertElements(object, i, GL_TRIANGLES, num_indices, GL_UNSIGNED_SHORT,
- vertex_buffers[i]->getIndicesPointer(), 0, 0.f);
- }
- stop_gloderror();
- }
-
- glodBuildObject(object);
- stop_gloderror();
-}
-
-// extract the GLOD data into vertex buffers
-void create_vertex_buffers_from_glod_object(S32 object, S32 group, std::vector<LLPointer <LLVertexBuffer> >& vertex_buffers)
-{
- vertex_buffers.clear();
-
- GLint patch_count = 0;
- glodGetObjectParameteriv(object, GLOD_NUM_PATCHES, &patch_count);
- stop_gloderror();
-
- GLint* sizes = new GLint[patch_count*2];
- glodGetObjectParameteriv(object, GLOD_PATCH_SIZES, sizes);
- stop_gloderror();
-
- GLint* names = new GLint[patch_count];
- glodGetObjectParameteriv(object, GLOD_PATCH_NAMES, names);
- stop_gloderror();
-
- for (S32 i = 0; i < patch_count; i++)
- {
- LLPointer<LLVertexBuffer> buff =
- new LLVertexBuffer(LLVertexBuffer::MAP_VERTEX | LLVertexBuffer::MAP_NORMAL | LLVertexBuffer::MAP_TEXCOORD0, 0);
-
- if (sizes[i*2+1] > 0 && sizes[i*2] > 0)
- {
- buff->allocateBuffer(sizes[i*2+1], sizes[i*2], true);
- buff->setBuffer(LLVertexBuffer::MAP_VERTEX | LLVertexBuffer::MAP_NORMAL | LLVertexBuffer::MAP_TEXCOORD0);
- glodFillElements(object, names[i], GL_UNSIGNED_SHORT, buff->getIndicesPointer());
- stop_gloderror();
- }
- else
- {
- // this face was eliminated, create a dummy triangle (one vertex, 3 indices, all 0)
- buff->allocateBuffer(1, 3, true);
- }
-
- vertex_buffers.push_back(buff);
- }
-
- glodDeleteObject(object);
- stop_gloderror();
- glodDeleteGroup(group);
- stop_gloderror();
-
- delete [] sizes;
- delete [] names;
-}
-
-
-LLPointer<LLModel> create_model_from_vertex_buffers(std::vector<LLPointer <LLVertexBuffer> >& vertex_buffers)
-{
- // extract the newly reduced mesh
-
- // create our output model
- LLVolumeParams volume_params;
- volume_params.setType(LL_PCODE_PROFILE_SQUARE, LL_PCODE_PATH_LINE);
- LLPointer<LLModel> out_model = new LLModel(volume_params, 0.f);
-
- out_model->setNumVolumeFaces(vertex_buffers.size());
-
- // build new faces from each vertex buffer
- for (GLint i = 0; i < vertex_buffers.size(); ++i)
- {
- LLStrider<LLVector3> pos;
- LLStrider<LLVector3> norm;
- LLStrider<LLVector2> tc;
- LLStrider<U16> index;
-
- vertex_buffers[i]->getVertexStrider(pos);
- vertex_buffers[i]->getNormalStrider(norm);
- vertex_buffers[i]->getTexCoord0Strider(tc);
- vertex_buffers[i]->getIndexStrider(index);
-
- out_model->setVolumeFaceData(i, pos, norm, tc, index,
- vertex_buffers[i]->getNumVerts(), vertex_buffers[i]->getNumIndices());
- }
-
- return out_model;
-}
-
-
-
-LLMeshReduction::LLMeshReduction()
-{
- mCounter = 1;
-
- glodInit();
-}
-
-LLMeshReduction::~LLMeshReduction()
-{
- glodShutdown();
-}
-
-
-LLPointer<LLModel> LLMeshReduction::reduce(LLModel* in_model, F32 limit, S32 mode)
-{
- LLVertexBuffer::unbind();
-
- // create vertex buffers from model
- std::vector<LLPointer<LLVertexBuffer> > in_vertex_buffers;
- create_vertex_buffers_from_model(in_model, in_vertex_buffers);
-
- // create glod object from vertex buffers
- stop_gloderror();
- S32 glod_group = mCounter++;
- S32 glod_object = mCounter++;
- create_glod_object_from_vertex_buffers(glod_object, glod_group, in_vertex_buffers);
-
-
- // set reduction parameters
- stop_gloderror();
-
- if (mode == TRIANGLE_BUDGET)
- {
- // triangle budget mode
- glodGroupParameteri(glod_group, GLOD_ADAPT_MODE, GLOD_TRIANGLE_BUDGET);
- stop_gloderror();
- glodGroupParameteri(glod_group, GLOD_ERROR_MODE, GLOD_OBJECT_SPACE_ERROR);
- stop_gloderror();
- S32 triangle_count = (S32)limit;
- glodGroupParameteri(glod_group, GLOD_MAX_TRIANGLES, triangle_count);
- stop_gloderror();
- }
- else if (mode == ERROR_THRESHOLD)
- {
- // error threshold mode
- glodGroupParameteri(glod_group, GLOD_ADAPT_MODE, GLOD_ERROR_THRESHOLD);
- glodGroupParameteri(glod_group, GLOD_ERROR_MODE, GLOD_OBJECT_SPACE_ERROR);
- F32 error_threshold = limit;
- glodGroupParameterf(glod_group, GLOD_OBJECT_SPACE_ERROR_THRESHOLD, error_threshold);
- stop_gloderror();
- }
-
- else
- {
- // not a legal mode
- return NULL;
- }
-
-
- // do the reduction
- glodAdaptGroup(glod_group);
- stop_gloderror();
-
- // convert glod object into vertex buffers
- std::vector<LLPointer<LLVertexBuffer> > out_vertex_buffers;
- create_vertex_buffers_from_glod_object(glod_object, glod_group, out_vertex_buffers);
-
- // convert vertex buffers into a model
- LLPointer<LLModel> out_model = create_model_from_vertex_buffers(out_vertex_buffers);
-
-
- return out_model;
-}
-
-#endif
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