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copied!<p>Since all the particles have the same texture,this will do the work:</p> <pre><code>float squarevData[12]={ -1,1, 1,1, -1,-1, 1,1, 1,-1, -1,-1, }; float squarevDataSteady[12]={ -1,1, 1,1, -1,-1, 1,1, 1,-1, -1,-1, }; class BatchRenderer { public: float* partVdata; float* partCdata; float* partTdata; bool isanydrawed; int counter1,counter2,counter3; int count; bool isz; bool textured; void Innit(int maxTextures,bool iszi) { isz=iszi; if(isz)partVdata=(float*)malloc(maxTextures*18*4); else partVdata=(float*)malloc(maxTextures*12*4); partCdata=(float*)malloc(maxTextures*24*4); partTdata=(float*)malloc(maxTextures*12*4); isanydrawed=false; } void Draw(float x,float y,float z,float scalex,float scaley,float angle,float r,float g,float b,float a) { isanydrawed=true; angle*=0.017453f; for(int c2=0;c2<12;c2+=2) { float x=squarevData[c2]*scalex; float y=squarevData[c2+1]*scaley; float cos1=cos(angle); float sin1=sin(angle); squarevDataSteady[c2] = (cos1*x) - ( sin1*y); squarevDataSteady[c2+1] = (sin1*x) + ( cos1*y); } partVdata[counter1++]=x+squarevDataSteady[0]; partVdata[counter1++]=y+squarevDataSteady[1]; if(isz)partVdata[counter1++]=z; partCdata[counter2++]=r; partCdata[counter2++]=g; partCdata[counter2++]=b; partCdata[counter2++]=a; partTdata[counter3++]=0; partTdata[counter3++]=1; partVdata[counter1++]=x+squarevDataSteady[2]; partVdata[counter1++]=y+squarevDataSteady[3]; if(isz)partVdata[counter1++]=z; partCdata[counter2++]=r; partCdata[counter2++]=g; partCdata[counter2++]=b; partCdata[counter2++]=a; partTdata[counter3++]=1; partTdata[counter3++]=1; partVdata[counter1++]=x+squarevDataSteady[4]; partVdata[counter1++]=y+squarevDataSteady[5]; if(isz)partVdata[counter1++]=z; partCdata[counter2++]=r; partCdata[counter2++]=g; partCdata[counter2++]=b; partCdata[counter2++]=a; partTdata[counter3++]=0; partTdata[counter3++]=0; partVdata[counter1++]=x+squarevDataSteady[6]; partVdata[counter1++]=y+squarevDataSteady[7]; if(isz)partVdata[counter1++]=z; partCdata[counter2++]=r; partCdata[counter2++]=g; partCdata[counter2++]=b; partCdata[counter2++]=a; partTdata[counter3++]=1; partTdata[counter3++]=1; partVdata[counter1++]=x+squarevDataSteady[8]; partVdata[counter1++]=y+squarevDataSteady[9]; if(isz)partVdata[counter1++]=z; partCdata[counter2++]=r; partCdata[counter2++]=g; partCdata[counter2++]=b; partCdata[counter2++]=a; partTdata[counter3++]=1; partTdata[counter3++]=0; partVdata[counter1++]=x+squarevDataSteady[10]; partVdata[counter1++]=y+squarevDataSteady[11]; if(isz)partVdata[counter1++]=z; partCdata[counter2++]=r; partCdata[counter2++]=g; partCdata[counter2++]=b; partCdata[counter2++]=a; partTdata[counter3++]=0; partTdata[counter3++]=0; count++; } void RenderStart() { counter1=counter2=count=counter3=0; } void RenderStop(int textureid) { if(!isanydrawed)return; glEnable(GL_TEXTURE_2D); glEnableClientState(GL_COLOR_ARRAY); glEnableClientState(GL_TEXTURE_COORD_ARRAY); glEnableClientState(GL_VERTEX_ARRAY); glBindTexture(GL_TEXTURE_2D, textureid); glTexCoordPointer(2, GL_FLOAT, 0, partTdata); glColorPointer(4, GL_FLOAT, 0,partCdata ); if(isz)glVertexPointer(3, GL_FLOAT, 0, partVdata); else glVertexPointer(2, GL_FLOAT, 0, partVdata); glDrawArrays(GL_TRIANGLES, 0, count*6); glDisableClientState(GL_COLOR_ARRAY); glDisableClientState(GL_TEXTURE_COORD_ARRAY); glDisableClientState(GL_VERTEX_ARRAY); isanydrawed=false; } }; </code></pre> <p><strong>Your code:</strong></p> <pre><code>BatchRenderer* br=new BatchRenderer(MAX_TEXTURES_NUM,true);//true since you are drawing 3d void onParticlesRender() { br->RenderStart(); for(int c=0;c<PARTICLES_SIZE;c++) { br->Draw(p[c].pos.x,p[c].pos.y,p[c].pos.z,p[c].scale.x,p[c].scale.y,p[c].angle,p[c].r,p[c].g,p[c].b,p[c].a); } br->RenderStop(yourTextureID); } </code></pre> <p>I cant test the code right now so if its working without a problem pls let me know</p> <p>VBO's is useless in batch render cause you are uploading to the gpu new vertex data in every frame.</p>

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