X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fmesh.cpp;h=b3b719c516942c42e5012a8ad92ad21dec06958d;hp=f8a7bcb215d8c5fd0bce934d23ddd16b7e8ea48d;hb=91d3eac06389c0bb0363f643790581403b5fca1b;hpb=0cc2f7704a05771f90df77255246ddeecab3a0e2 diff --git a/source/mesh.cpp b/source/mesh.cpp index f8a7bcb2..b3b719c5 100644 --- a/source/mesh.cpp +++ b/source/mesh.cpp @@ -1,32 +1,51 @@ +#include +#include +#include +#include #include "buffer.h" +#include "error.h" #include "mesh.h" #include "renderer.h" +#include "resourcemanager.h" using namespace std; namespace Msp { namespace GL { -Mesh::Mesh(): - vertices(VERTEX3), - vbuf(0), - ibuf(0), - defer_buffers(true), - winding(0) -{ } - -Mesh::Mesh(const VertexFormat &f): - vertices(f), - vbuf(0), - ibuf(0), - defer_buffers(true), - winding(0) -{ } +Mesh::Mesh(ResourceManager *rm): + vertices(VERTEX3) +{ + init(rm); +} + +Mesh::Mesh(const VertexFormat &f, ResourceManager *rm): + vertices(f) +{ + init(rm); +} + +void Mesh::init(ResourceManager *rm) +{ + vbuf = 0; + ibuf = 0; + vao_id = 0; + defer_buffers = ARB_vertex_buffer_object; + dirty = true; + disallow_rendering = false; + winding = 0; + + if(rm) + set_manager(rm); +} Mesh::~Mesh() { + set_manager(0); delete vbuf; delete ibuf; + if(vao_id) + glDeleteVertexArrays(1, &vao_id); } void Mesh::clear() @@ -42,7 +61,7 @@ void Mesh::use_buffers(bool b) create_buffers(); else { - vertices.use_vertex_buffer(0); + vertices.use_buffer(0); delete vbuf; vbuf = 0; delete ibuf; @@ -56,10 +75,38 @@ void Mesh::create_buffers() if(!vbuf) vbuf = new Buffer(ARRAY_BUFFER); - vertices.use_vertex_buffer(vbuf); + vertices.use_buffer(vbuf); if(!ibuf) ibuf = new Buffer(ELEMENT_ARRAY_BUFFER); + + if(ARB_vertex_array_object && !vao_id) + glGenVertexArrays(1, &vao_id); +} + +void Mesh::setup_vao() const +{ + Bind bind_vbuf(vbuf, ARRAY_BUFFER); + + const VertexFormat &fmt = vertices.get_format(); + unsigned stride = get_stride(fmt)*sizeof(float); + float *ptr = 0; + for(const unsigned char *c=fmt.begin(); c!=fmt.end(); ++c) + { + unsigned t = get_component_type(*c); + if(t>=get_component_type(ATTRIB1)) + t -= get_component_type(ATTRIB1); + unsigned sz = get_component_size(*c); + if(*c==COLOR4_UBYTE) + glVertexAttribPointer(t, 4, GL_UNSIGNED_BYTE, true, stride, ptr); + else + glVertexAttribPointer(t, sz, GL_FLOAT, false, stride, ptr); + glEnableVertexAttribArray(t); + ptr += sz; + } + glBindBuffer(ELEMENT_ARRAY_BUFFER, ibuf->get_id()); + + dirty = false; } unsigned Mesh::get_n_vertices() const @@ -81,10 +128,29 @@ void Mesh::add_batch(const Batch &b) batches.back().append(b); else { + bool reallocate = (batches.size()==batches.capacity()); + if(reallocate && ibuf) + { + for(vector::iterator i=batches.end(); i!=batches.begin(); ) + (--i)->use_buffer(0); + } + Batch *prev = (batches.empty() ? 0 : &batches.back()); batches.push_back(b); if(ibuf) - batches.back().use_buffer(ibuf, prev); + { + if(reallocate) + { + prev = 0; + for(vector::iterator i=batches.begin(); i!=batches.end(); ++i) + { + i->use_buffer(ibuf, prev); + prev = &*i; + } + } + else + batches.back().use_buffer(ibuf, prev); + } } } @@ -95,29 +161,93 @@ void Mesh::set_winding(const WindingTest *w) void Mesh::draw() const { - vertices.apply(); + const Mesh *cur = current(); + if(cur && cur!=this) + throw invalid_operation("Mesh::draw"); - if(ibuf) - ibuf->bind_to(ELEMENT_ARRAY_BUFFER); + if(manager) + { + manager->resource_used(*this); + if(disallow_rendering) + return; + } + + if(!current()) + vertices.apply(); + BindRestore bind_ibuf(ibuf, ELEMENT_ARRAY_BUFFER); Bind bind_winding(winding); - for(list::const_iterator i=batches.begin(); i!=batches.end(); ++i) + for(vector::const_iterator i=batches.begin(); i!=batches.end(); ++i) i->draw(); - - if(ibuf) - Buffer::unbind_from(ELEMENT_ARRAY_BUFFER); } void Mesh::draw(Renderer &renderer) const { - vertices.apply(); - renderer.set_element_buffer(ibuf); + if(manager) + { + manager->resource_used(*this); + if(disallow_rendering) + return; + } + + renderer.set_mesh(this); renderer.set_winding_test(winding); - for(list::const_iterator i=batches.begin(); i!=batches.end(); ++i) + for(vector::const_iterator i=batches.begin(); i!=batches.end(); ++i) renderer.draw(*i); } +void Mesh::bind() const +{ + /* If VAOs are not supported, vao_id is zero and set_current won't get + called. Thus unbind won't try to call a null function either. */ + if(!vao_id) + { + unbind(); + vertices.apply(false); + } + else if(set_current(this)) + { + glBindVertexArray(vao_id); + vertices.refresh(); + if(dirty) + setup_vao(); + } +} + +void Mesh::unbind() +{ + if(set_current(0)) + glBindVertexArray(0); +} + +Resource::AsyncLoader *Mesh::load(IO::Seekable &io, const Resources *) +{ + return new AsyncLoader(*this, io); +} + +UInt64 Mesh::get_data_size() const +{ + UInt64 size = 0; + if(vbuf) + size += vbuf->get_size(); + if(ibuf) + size += ibuf->get_size(); + return size; +} + +void Mesh::unload() +{ + vertices.clear(); + vertices.use_buffer(0); + batches.clear(); + delete vbuf; + delete ibuf; + defer_buffers = (vbuf || ibuf); + vbuf = 0; + ibuf = 0; +} + Mesh::Loader::Loader(Mesh &m): DataFile::ObjectLoader(m) @@ -136,6 +266,7 @@ void Mesh::Loader::vertices(const vector &c) for(vector::const_iterator i=c.begin(); i!=c.end(); ++i) fmt = (fmt, *i); obj.vertices.reset(fmt); + obj.dirty = true; load_sub(obj.vertices); } @@ -154,5 +285,69 @@ void Mesh::Loader::winding(FaceWinding w) obj.winding = &WindingTest::counterclockwise(); } + +Mesh::AsyncLoader::AsyncLoader(Mesh &m, IO::Seekable &i): + mesh(m), + io(i), + vertex_updater(0), + index_updater(0), + phase(0) +{ + // Make sure the extension is initialized in the rendering thread. + (void)(bool)NV_primitive_restart; + + mesh.disallow_rendering = true; + if(mesh.defer_buffers) + mesh.create_buffers(); +} + +Mesh::AsyncLoader::~AsyncLoader() +{ + mesh.disallow_rendering = false; + delete vertex_updater; + delete index_updater; +} + +bool Mesh::AsyncLoader::needs_sync() const +{ + return phase%2; +} + +bool Mesh::AsyncLoader::process() +{ + if(phase==0) + { + // TODO use correct filename + DataFile::Parser parser(io, "async"); + Loader loader(mesh); + loader.load(parser); + } + else if(phase==1) + { + vertex_updater = mesh.vertices.refresh_async(); + if(!mesh.batches.empty()) + index_updater = mesh.batches.front().refresh_async(); + } + else if(phase==2) + { + if(vertex_updater) + vertex_updater->upload_data(); + if(index_updater) + index_updater->upload_data(); + } + else if(phase==3) + { + delete vertex_updater; + vertex_updater = 0; + delete index_updater; + index_updater = 0; + } + + ++phase; + if(phase==1 && !mesh.vbuf && !mesh.ibuf) + phase += 3; + return phase>3; +} + } // namespace GL } // namespace Msp