glimBatch.h

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/*
** GLIM - OpenGL Immediate Mode
** Copyright Jan Krassnigg (Jan@Krassnigg.de)
** For more details, see the included Readme.txt.
*/
 
#ifndef GLIM_GLIMBATCH_H
#define GLIM_GLIMBATCH_H
 
#include "glimBatchData.h"
 
namespace NS_GLIM
{
    class GLIM_BATCH
    {
    public:
        GLIM_BATCH();
        ~GLIM_BATCH() = default;
 
        // Begins defining one piece of geometry that can later be rendered with one set of states.
        void BeginBatch (bool reserveBuffers = true, unsigned int vertexCount = 64 * 3, unsigned int attributeCount = 1);
        glimBatchData& EndBatch (void) noexcept;
 
        bool PrepareRender();
 
        void Begin (GLIM_ENUM eType) noexcept;
        void End (void);
 
        void Vertex (float x, float y, float z = 0.0f);
        GLIM_ATTRIBUTE Attribute1f (unsigned int attribLocation, float a1);
        GLIM_ATTRIBUTE Attribute2f (unsigned int attribLocation, float a1, float a2);
        GLIM_ATTRIBUTE Attribute3f (unsigned int attribLocation, float a1, float a2, float a3);
        GLIM_ATTRIBUTE Attribute4f (unsigned int attribLocation, float a1, float a2, float a3, float a4);
 
        GLIM_ATTRIBUTE Attribute1i (unsigned int attribLocation, int a1);
        GLIM_ATTRIBUTE Attribute2i (unsigned int attribLocation, int a1, int a2);
        GLIM_ATTRIBUTE Attribute3i (unsigned int attribLocation, int a1, int a2, int a3);
        GLIM_ATTRIBUTE Attribute4i (unsigned int attribLocation, int a1, int a2, int a3, int a4);
 
        GLIM_ATTRIBUTE Attribute4ub (unsigned int attribLocation, unsigned char a1, unsigned char a2, unsigned char a3, unsigned char a4 = 255);
 
 
        void Attribute1f (GLIM_ATTRIBUTE Attr, float a1) noexcept;
        void Attribute2f (GLIM_ATTRIBUTE Attr, float a1, float a2) noexcept;
        void Attribute3f (GLIM_ATTRIBUTE Attr, float a1, float a2, float a3) noexcept;
        void Attribute4f (GLIM_ATTRIBUTE Attr, float a1, float a2, float a3, float a4) noexcept;
 
        void Attribute1i (GLIM_ATTRIBUTE Attr, int a1) noexcept;
        void Attribute2i (GLIM_ATTRIBUTE Attr, int a1, int a2) noexcept;
        void Attribute3i (GLIM_ATTRIBUTE Attr, int a1, int a2, int a3) noexcept;
        void Attribute4i (GLIM_ATTRIBUTE Attr, int a1, int a2, int a3, int a4) noexcept;
 
        void Attribute4ub (GLIM_ATTRIBUTE Attr, unsigned char a1, unsigned char a2, unsigned char a3, unsigned char a4 = 255) noexcept;
 
        void Clear (bool reserveBuffers, unsigned int vertexCount, unsigned int attributeCount);
 
        bool isCleared (void) const noexcept {return m_Data.m_State == GLIM_BATCH_STATE::STATE_EMPTY;}
 
    private:
        GLIM_BATCH (const GLIM_BATCH& cc);
        const GLIM_BATCH& operator= (const GLIM_BATCH& cc);
 
        // The currently generated primitive type as specified via 'Begin'
        GLIM_ENUM m_PrimitiveType;
 
        // Counts how many vertices have been added since 'Begin'
        unsigned int m_uiPrimitiveVertex;
        // The index of the first vertex passed after 'Begin'
        unsigned int m_uiPrimitiveFirstIndex;
        // The Index of the Vertex passed previously.
        unsigned int m_uiPrimitiveLastIndex;
 
        glimBatchData m_Data;
    };
}
 
#pragma once
 
 
#endif