85 lines
2.5 KiB
C++
85 lines
2.5 KiB
C++
#pragma once
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#ifndef _NB_DRAW
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#define _NB_DRAW
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#include <GLLoad.h>
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#include <exception>
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#include <map>
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#include <string>
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#include <vector>
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#include "Buffers.h"
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#include "Shader.h"
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#define THROW_DRAW_ERROR(msg) throw DrawError(msg, __FILE__, __LINE__);
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namespace NB{
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class DrawError : public std::runtime_error {
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public:
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DrawError(const std::string&, const std::string& file="", int line=-1);
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};
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uint8_t VerticesFromPrimitives(GLenum, unsigned int num_prims=1);
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uint8_t PrimitivesFromVertices(GLenum, unsigned int);
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void copyVertexAttribute(const VertexAttribute&, VertexAttribute&);
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class DrawBuffer {
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public:
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DrawBuffer(const Shader&, VertexAttributeList, GLenum prim_type=GL_TRIANGLES);
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//DrawBuffer(std::initializer_list<VertexAttribute>, std::initializer_list<VertexAttributePointer>);
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unsigned int vertSize() const;
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const Shader shader() const;
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bool keepLocalElement() const;
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bool keepLocalVertex() const;
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unsigned int elementBufferID() const;
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unsigned int vertexBufferID() const;
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virtual void draw() const;
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VertexAttributeList changeVertLayout(unsigned int, VertexAttributePointer);
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bool keepLocalElement(bool);
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bool keepLocalVertex(bool);
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const Shader shader(const Shader&);
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virtual void generateEBO(const std::vector<unsigned int>&);
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virtual void generateEBO(unsigned int);
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virtual void loadEBO(const std::vector<unsigned int>&, unsigned int offset=0);
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virtual void generateVBO(const RawVec&);
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virtual void generateVBO(unsigned int);
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virtual void loadVBO(const RawVec&, unsigned int offset=0);
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protected:
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VAOManager<unsigned int> _VAO;
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const GLenum _gl_primitive_type=0;
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virtual VertexAttributeList defaultVAO(VertexAttributeList);
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BufferManager<GL_ARRAY_BUFFER, unsigned char> _vert_data;
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BufferManager<GL_ELEMENT_ARRAY_BUFFER, unsigned int> _elmt_data;
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Shader _shader;
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unsigned int _num_verts, _num_prims;
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};
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class DrawInstanceBuffer : public DrawBuffer {
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public:
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DrawInstanceBuffer(const Shader&, VertexAttributeList, VertexAttributeList, GLenum primt_type=GL_TRIANGLES);
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unsigned int instSize() const;
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virtual void draw() const;
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VertexAttributeList changeInstanceLayout(unsigned int, VertexAttributePointer);
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virtual void generateIBO(const RawVec&);
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virtual void generateIBO(unsigned int);
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virtual void loadIBO(const RawVec&, unsigned int offset=0);
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private:
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virtual VertexAttributeList defaultVAO(VertexAttributeList);
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BufferManager<GL_ARRAY_BUFFER, unsigned char> _inst_data;
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unsigned int _num_inst;
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};
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}
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#endif |