86 lines
2.2 KiB
C++
86 lines
2.2 KiB
C++
#include <GL/glew.h>
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#include "queuepserver.h"
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using namespace std;
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using namespace nxs;
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QueuePServer::Data &QueuePServer::Lookup(unsigned int patch,
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unsigned short nv, unsigned short nf,
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float priority) {
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if(index.count(patch)) {
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return index[patch];
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} else {
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while(ram_used > ram_max) {
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pop_heap(heap.begin(), heap.end());
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Item item = heap.back();
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if(item.priority == 0) break; //no deleting needed patches.
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Data &data = index[patch];
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FlushVbo(data);
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FlushPatch(patch, data.patch);
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index.erase(patch);
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}
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Item item(patch, priority);
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heap.push_back(item);
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push_heap(heap.begin(), heap.end());
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Data &data = index[patch];
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data.patch = LoadPatch(patch, nv, nf);
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LoadVbo(data);
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return data;
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}
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}
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bool QueuePServer::IsLoaded(unsigned int patch) {
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return index.count(patch);
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}
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void QueuePServer::Flush() {
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std::map<unsigned int, Data>::iterator i;
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for(i = index.begin(); i != index.end(); i++) {
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FlushVbo((*i).second);
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FlushPatch((*i).first, (*i).second.patch);
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}
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}
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void QueuePServer::LoadVbo(Data &data) {
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if(!vbo_max) return;
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Patch &patch = *data.patch;
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glGenBuffersARB(1, &data.vbo_element);
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assert(data.vbo_element);
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glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, data.vbo_element);
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unsigned int size = patch.nf * sizeof(unsigned short);
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if((signature & NXS_FACES) != 0) size *= 3;
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glBufferDataARB(GL_ELEMENT_ARRAY_BUFFER_ARB, size, patch.FaceBegin(),
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GL_STATIC_DRAW_ARB);
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vbo_used += size;
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//TODO fix this when we allow data :p
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size = sizeof(float) * patch.dstart;
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glGenBuffersARB(1, &data.vbo_array);
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assert(data.vbo_array);
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glBindBufferARB(GL_ARRAY_BUFFER_ARB, data.vbo_array);
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glBufferDataARB(GL_ARRAY_BUFFER_ARB, size, patch.VertBegin(),
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GL_STATIC_DRAW_ARB);
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vbo_used += size;
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}
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void QueuePServer::FlushVbo(Data &data) {
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if(!vbo_max) return;
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assert(data.vbo_element);
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assert(data.vbo_array);
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glDeleteBuffersARB(1, &data.vbo_element);
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glDeleteBuffersARB(1, &data.vbo_array);
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data.vbo_element = 0;
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data.vbo_array = 0;
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Patch &patch = *data.patch;
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vbo_used -= patch.nf * sizeof(unsigned short);
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vbo_used -= sizeof(float) * patch.dstart;
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}
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