Add Chromium-only Blender WebEngine parity work

blender-5.2.0/extern/opensubdiv-source/tutorials/osd/CMakeLists.txt

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+#
+#   Copyright 2013 Pixar
+#
+#   Licensed under the terms set forth in the LICENSE.txt file available at
+#   https://opensubdiv.org/license.
+#
+
+set(TUTORIALS
+    tutorial_0
+)
+
+foreach(tutorial ${TUTORIALS})
+
+    add_subdirectory("${tutorial}")
+
+    list(APPEND TUTORIAL_TARGETS "osd_${tutorial}")
+
+endforeach()
+
+add_custom_target(osd_tutorials DEPENDS ${TUTORIAL_TARGETS})
+
+set_target_properties(osd_tutorials
+    PROPERTIES 
+        FOLDER "tutorials/osd"
+)

blender-5.2.0/extern/opensubdiv-source/tutorials/osd/tutorial_0/CMakeLists.txt

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+#
+#   Copyright 2013 Pixar
+#
+#   Licensed under the terms set forth in the LICENSE.txt file available at
+#   https://opensubdiv.org/license.
+#
+
+set(SOURCE_FILES
+    osd_tutorial_0.cpp
+)
+
+osd_add_executable(osd_tutorial_0 "tutorials/osd"
+    ${SOURCE_FILES}
+)
+
+
+target_link_libraries(osd_tutorial_0
+    osd_static_cpu
+)
+
+install(TARGETS osd_tutorial_0 DESTINATION "${CMAKE_BINDIR_BASE}/tutorials")
+

blender-5.2.0/extern/opensubdiv-source/tutorials/osd/tutorial_0/osd_tutorial_0.cpp

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+//
+//   Copyright 2013 Pixar
+//
+//   Licensed under the terms set forth in the LICENSE.txt file available at
+//   https://opensubdiv.org/license.
+//
+
+
+//------------------------------------------------------------------------------
+// Tutorial description:
+//
+// This tutorial demonstrates the manipulation of Osd Evaluator and
+// BufferDescriptor.
+//
+
+#include <opensubdiv/far/topologyDescriptor.h>
+#include <opensubdiv/far/stencilTableFactory.h>
+#include <opensubdiv/osd/cpuEvaluator.h>
+#include <opensubdiv/osd/cpuVertexBuffer.h>
+
+#include <cstdio>
+#include <cstring>
+
+//------------------------------------------------------------------------------
+// Cube geometry from catmark_cube.h
+static float g_verts[24] = {-0.5f, -0.5f,  0.5f,
+                             0.5f, -0.5f,  0.5f,
+                            -0.5f,  0.5f,  0.5f,
+                             0.5f,  0.5f,  0.5f,
+                            -0.5f,  0.5f, -0.5f,
+                             0.5f,  0.5f, -0.5f,
+                            -0.5f, -0.5f, -0.5f,
+                             0.5f, -0.5f, -0.5f};
+
+static int g_nverts = 8,
+           g_nfaces = 6;
+
+static int g_vertsperface[6] = { 4, 4, 4, 4, 4, 4 };
+
+static int g_vertIndices[24] = { 0, 1, 3, 2,
+                                 2, 3, 5, 4,
+                                 4, 5, 7, 6,
+                                 6, 7, 1, 0,
+                                 1, 7, 5, 3,
+                                 6, 0, 2, 4  };
+
+using namespace OpenSubdiv;
+
+static Far::TopologyRefiner const * createTopologyRefiner(int maxlevel);
+
+//------------------------------------------------------------------------------
+int main(int, char **) {
+
+    int maxlevel=2,
+        nCoarseVerts=0,
+        nRefinedVerts=0;
+
+    //
+    // Setup phase
+    //
+    Far::StencilTable const * stencilTable = NULL;
+    { // Setup Far::StencilTable
+        Far::TopologyRefiner const * refiner = createTopologyRefiner(maxlevel);
+
+        // Setup a factory to create FarStencilTable (for more details see
+        // Far tutorials)
+        Far::StencilTableFactory::Options options;
+        options.generateOffsets=true;
+        options.generateIntermediateLevels=false;
+
+        stencilTable = Far::StencilTableFactory::Create(*refiner, options);
+
+        nCoarseVerts = refiner->GetLevel(0).GetNumVertices();
+        nRefinedVerts = stencilTable->GetNumStencils();
+
+        // We are done with Far: cleanup table
+        delete refiner;
+    }
+
+    // Setup a buffer for vertex primvar data:
+    Osd::CpuVertexBuffer * vbuffer =
+        Osd::CpuVertexBuffer::Create(3, nCoarseVerts + nRefinedVerts);
+
+    //
+    // Execution phase (every frame)
+    //
+    {
+        // Pack the control vertex data at the start of the vertex buffer
+        // and update every time control data changes
+        vbuffer->UpdateData(g_verts, 0, nCoarseVerts);
+
+
+        Osd::BufferDescriptor srcDesc(0, 3, 3);
+        Osd::BufferDescriptor dstDesc(nCoarseVerts*3, 3, 3);
+
+        // Launch the computation
+        Osd::CpuEvaluator::EvalStencils(vbuffer, srcDesc,
+                                        vbuffer, dstDesc,
+                                        stencilTable);
+    }
+
+    { // Visualization with Maya : print a MEL script that generates particles
+      // at the location of the refined vertices
+
+        printf("particle ");
+        float const * refinedVerts = vbuffer->BindCpuBuffer() + 3*nCoarseVerts;
+        for (int i=0; i<nRefinedVerts; ++i) {
+            float const * vert = refinedVerts + 3*i;
+            printf("-p %f %f %f\n", vert[0], vert[1], vert[2]);
+        }
+        printf("-c 1;\n");
+    }
+
+    delete stencilTable;
+    delete vbuffer;
+}
+
+//------------------------------------------------------------------------------
+static Far::TopologyRefiner const *
+createTopologyRefiner(int maxlevel) {
+
+    // Populate a topology descriptor with our raw data
+
+    typedef Far::TopologyDescriptor Descriptor;
+
+    Sdc::SchemeType type = OpenSubdiv::Sdc::SCHEME_CATMARK;
+
+    Sdc::Options options;
+    options.SetVtxBoundaryInterpolation(Sdc::Options::VTX_BOUNDARY_EDGE_ONLY);
+
+    Descriptor desc;
+    desc.numVertices = g_nverts;
+    desc.numFaces = g_nfaces;
+    desc.numVertsPerFace = g_vertsperface;
+    desc.vertIndicesPerFace = g_vertIndices;
+
+    // Instantiate a FarTopologyRefiner from the descriptor
+    Far::TopologyRefiner * refiner =
+        Far::TopologyRefinerFactory<Descriptor>::Create(desc,
+            Far::TopologyRefinerFactory<Descriptor>::Options(type, options));
+
+    // Uniformly refine the topology up to 'maxlevel'
+    refiner->RefineUniform(Far::TopologyRefiner::UniformOptions(maxlevel));
+
+    return refiner;
+}
+
+//------------------------------------------------------------------------------