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Made rendering slightly more efficient (Draw::Box is really not effective)

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This commit is contained in:
andreja6
2018-06-01 23:04:06 -07:00
parent 6accc7e366
commit 312ea44922
3 changed files with 99 additions and 57 deletions
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37
PhysicalInstance.cpp
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@@ -5,6 +5,7 @@ Vector3 size;
Vector3 position;
Vector3 velocity;
Vector3 rotVelocity;
GLfloat vertecies[96];
CoordinateFrame cFrame;
Color3 color;
bool changed = true;
@@ -89,13 +90,47 @@ Box PhysicalInstance::getBox()
Box box = Box(Vector3(0+size.x/4, 0+size.y/4, 0+size.z/4) ,Vector3(0-size.x/4,0-size.y/4,0-size.z/4));
CoordinateFrame c = getCFrameRenderBased();
itemBox = c.toWorldSpace(box);
Vector3 v0,v1,v2,v3;
for (int f = 0; f < 6; f++) {
itemBox.getFaceCorners(f, v0,v1,v2,v3);
vertecies[f*16] = v0.x;
vertecies[(f*16)+1] = v0.y;
vertecies[(f*16)+2] = v0.z;
vertecies[(f*16)+3] = v1.x;
vertecies[(f*16)+4] = v1.y;
vertecies[(f*16)+5] = v1.z;
vertecies[(f*16)+6] = v2.x;
vertecies[(f*16)+7] = v2.y;
vertecies[(f*16)+8] = v2.z;
vertecies[(f*16)+9] = v3.x;
vertecies[(f*16)+10] = v3.y;
vertecies[(f*16)+11] = v3.z;
vertecies[(f*16)+12] = color.r;
vertecies[(f*16)+13] = color.g;
vertecies[(f*16)+14] = color.b;
vertecies[(f*16)+15] = 1;
}
}
return itemBox;
}
void PhysicalInstance::render(RenderDevice* rd)
{
Draw::box(getBox(), rd, color, Color4::clear());
if(changed)
Box box = getBox();
glColor(color);
glBegin(GL_QUADS);
for(int i = 0; i < 96; i+=16)
{
Vector3 v0 = Vector3(vertecies[i], vertecies[i+1], vertecies[i+2]), v1 = Vector3(vertecies[i+3], vertecies[i+4], vertecies[i+5]), v3 = Vector3(vertecies[i+9], vertecies[i+10], vertecies[i+11]);
glNormal3fv((v1 - v0).cross(v3 - v0).direction());
glVertex3fv(v0);
glVertex3fv(v1);
glVertex3f(vertecies[i+6], vertecies[i+7], vertecies[i+8]);
glVertex3fv(v3);
}
glEnd();
glColor(Color3::white());
if(!children.empty())
{
for(size_t i = 0; i < children.size(); i++)