/// <summary>
///
/// </summary>
protected override void DoInitialize()
{
// init shader program.
ShaderProgram program = this.shaderCodes.CreateProgram();
// init vertex attribute buffer objects.
IBufferable model = this.Model;
VertexAttributeBufferPtr[] vertexAttributeBufferPtrs;
{
var list = new List <VertexAttributeBufferPtr>();
foreach (var item in this.attributeMap)
{
VertexAttributeBufferPtr bufferPtr = model.GetVertexAttributeBufferPtr(
item.NameInIBufferable, item.VarNameInShader);
if (bufferPtr == null)
{
throw new Exception(string.Format("[{0}] returns null buffer pointer!", model));
}
list.Add(bufferPtr);
}
vertexAttributeBufferPtrs = list.ToArray();
}
// init index buffer.
IndexBufferPtr indexBufferPtr = model.GetIndexBufferPtr();
// RULE: Renderer takes uint.MaxValue, ushort.MaxValue or byte.MaxValue as PrimitiveRestartIndex. So take care this rule when designing a model's index buffer.
var ptr = indexBufferPtr as OneIndexBufferPtr;
if (ptr != null)
{
GLSwitch glSwitch = new PrimitiveRestartSwitch(ptr);
this.switchList.Add(glSwitch);
}
// init VAO.
var vertexArrayObject = new VertexArrayObject(indexBufferPtr, vertexAttributeBufferPtrs);
vertexArrayObject.Initialize(program);
// sets fields.
this.Program = program;
this.vertexAttributeBufferPtrs = vertexAttributeBufferPtrs;
this.indexBufferPtr = indexBufferPtr;
this.vertexArrayObject = vertexArrayObject;
}
protected override void DoInitialize()
{
// init shader program.
ShaderProgram program = this.shaderCodes.CreateProgram();
VertexAttributeBufferPtr positionBufferPtr = null;
IBufferable model = this.Model;
VertexAttributeBufferPtr[] vertexAttributeBufferPtrs;
{
var list = new List <VertexAttributeBufferPtr>();
foreach (var item in this.attributeMap)
{
VertexAttributeBufferPtr bufferPtr = model.GetVertexAttributeBufferPtr(
item.NameInIBufferable, item.VarNameInShader);
if (bufferPtr == null)
{
throw new Exception(string.Format("[{0}] returns null buffer pointer!", model));
}
if (item.NameInIBufferable == this.PositionNameInIBufferable)
{
positionBufferPtr = new VertexAttributeBufferPtr(
"in_Position",// in_Postion same with in the PickingShader.vert shader
bufferPtr.BufferId,
bufferPtr.Config,
bufferPtr.Length,
bufferPtr.ByteLength);
break;
}
list.Add(bufferPtr);
}
vertexAttributeBufferPtrs = list.ToArray();
}
// 由于picking.vert/frag只支持vec3的position buffer，所以有此硬性规定。
if (positionBufferPtr == null || positionBufferPtr.Config != VertexAttributeConfig.Vec3)
{
throw new Exception(string.Format("Position buffer must use a type composed of 3 float as PropertyBuffer<T>'s T!"));
}
// init index buffer.
IndexBufferPtr indexBufferPtr = model.GetIndexBufferPtr();
// RULE: Renderer takes uint.MaxValue, ushort.MaxValue or byte.MaxValue as PrimitiveRestartIndex. So take care this rule when designing a model's index buffer.
var ptr = indexBufferPtr as OneIndexBufferPtr;
if (ptr != null)
{
GLSwitch glSwitch = new PrimitiveRestartSwitch(ptr);
this.switchList.Add(glSwitch);
}
// init VAO.
var vertexArrayObject = new VertexArrayObject(indexBufferPtr, positionBufferPtr);
vertexArrayObject.Initialize(program);
// sets fields.
this.Program = program;
this.vertexAttributeBufferPtrs = new VertexAttributeBufferPtr[] { positionBufferPtr };
this.indexBufferPtr = indexBufferPtr;
this.vertexArrayObject = vertexArrayObject;
}