public unsafe RenderBuffer <float> Draw <T>(RenderEntity[] entities, T camera) where T : ICamera
{
Clear();
int entityCount = entities.Length;
BeginRasterize();
SetPerRenderValues(camera);
for (int i = 0; i < entityCount; i++)
{
RenderEntity currentEntity = entities[i];
SetPerObjectValues(currentEntity);
Material material = currentEntity.Material ?? DEFAULT_MATERIAL;
Model model = currentEntity.Model;
#region Vertex Stage
//Prepare vertex shader
VertexInvoker.ChangeActiveShader(material.ShaderType, material.Shader);
//Invoke vertex shader
int vertexCount = model.Vertices.Length;
Vector2 *coordsOutput = stackalloc Vector2[vertexCount];
ShaderInOutPatternDefault *inoutPtr = stackalloc ShaderInOutPatternDefault[1];
for (int j = 0; j < vertexCount; j++)
{
VertexInvoker.Invoke(model.ReadVerticesDataAsPattern(j));
VertexInvoker.ActiveOutputMap.Write(inoutPtr);
coordsOutput[j] = *(Vector2 *)&inoutPtr->Vertex;
}
#endregion
#region Fragment Stage
FragmentInvoker.ChangeActiveShader(material.ShaderType, material.Shader);
//Primitive assemble
int newPrimitiveCount = AssemblePrimitive(model, coordsOutput);
_rasterizedFragments.AddEmpty(newPrimitiveCount);
switch (_assembleMode)
{
case PrimitiveAssembleMode.Line:
case PrimitiveAssembleMode.LineTriangle:
Rasterize <LinePrimitive, Line>(_linePrimitives.GetPointer(_linePrimitives.Count - newPrimitiveCount), newPrimitiveCount, _rasterizedFragments.GetPointer(_rasterizedFragments.Count - newPrimitiveCount));
break;
case PrimitiveAssembleMode.Triangle:
Rasterize <TrianglePrimitive, Triangle>(_trianglePrimitives.GetPointer(_trianglePrimitives.Count - newPrimitiveCount), newPrimitiveCount, _rasterizedFragments.GetPointer(_rasterizedFragments.Count - newPrimitiveCount));
break;
}
for (int j = _rasterizedFragments.Count - newPrimitiveCount; j < _rasterizedFragments.Count; j++)
{
Fragment *fragment = _rasterizedFragments.GetPointer(j);
for (int k = 0; k < fragment->PixelCount; k++)
{
//Fragment.FragmentData has been tailored to a proper size
FragmentInvoker.Invoke((byte *)fragment->FragmentData[k]);
FragmentInvoker.ActiveOutputMap.Write(inoutPtr);
_renderedColors.Add(inoutPtr->Color);
}
fragment->FragmentColor = _renderedColors.ArchivePointer();
}
#endregion
}
EndRasterize();
//Octree is so annoying
//TODO: View frustum clip, triangle clip, pixel clip
//Clipping();
//This is not the proper way to output, rather for debugging
for (int i = 0; i < _rasterizedFragments.Count; i++)
{
Fragment *fragmentPtr = _rasterizedFragments.GetPointer(i);
RenderTarget.WritePixel(fragmentPtr->Rasterization, fragmentPtr->PixelCount, fragmentPtr->FragmentColor);
}
return(RenderTarget);
}