/// <summary>
///
/// </summary>
/// <param name="bufferName"></param>
/// <param name="varNameInShader"></param>
/// <returns></returns>
public VertexAttributeBufferPtr GetVertexAttributeBufferPtr(string bufferName, string varNameInShader)
{
if (bufferName == strPosition)
{
if (positionBufferPtr == null)
{
using (var buffer = new VertexAttributeBuffer <GlyphPosition>(varNameInShader, VertexAttributeConfig.Vec2, BufferUsage.DynamicDraw))
{
buffer.Create(maxCharCount);
positionBufferPtr = buffer.GetBufferPtr();
}
}
return(positionBufferPtr);
}
else if (bufferName == strUV)
{
if (uvBufferPtr == null)
{
using (var buffer = new VertexAttributeBuffer <GlyphTexCoord>(varNameInShader, VertexAttributeConfig.Vec2, BufferUsage.DynamicDraw))
{
buffer.Create(maxCharCount);
uvBufferPtr = buffer.GetBufferPtr();
}
}
return(uvBufferPtr);
}
else
{
throw new ArgumentException();
}
}
/// <summary>
///
/// </summary>
/// <param name="bufferName"></param>
/// <param name="varNameInShader"></param>
/// <returns></returns>
public VertexAttributeBufferPtr GetVertexAttributeBufferPtr(string bufferName, string varNameInShader)
{
if (bufferName == strPosition)
{
if (positionBufferPtr == null)
{
using (var buffer = new VertexAttributeBuffer <vec3>(varNameInShader, VertexAttributeConfig.Vec3, BufferUsage.StaticDraw))
{
buffer.Create(positions.Length);
unsafe
{
var array = (vec3 *)buffer.Header.ToPointer();
for (int i = 0; i < positions.Length; i++)
{
array[i] = positions[i] / 2 * this.lengths;
}
}
positionBufferPtr = buffer.GetBufferPtr();
}
}
return(positionBufferPtr);
}
else
{
throw new ArgumentException();
}
}
/// <summary>
///
/// </summary>
/// <param name="bufferName"></param>
/// <param name="varNameInShader"></param>
/// <returns></returns>
public VertexAttributeBufferPtr GetVertexAttributeBufferPtr(string bufferName, string varNameInShader)
{
if (bufferName == position)
{
if (positionBufferPtr == null)
{
using (var buffer = new VertexAttributeBuffer <vec3>(
varNameInShader, VertexAttributeConfig.Vec3, BufferUsage.StaticDraw))
{
buffer.Create(BigDipperModel.positions.Length);
unsafe
{
var array = (vec3 *)buffer.Header.ToPointer();
for (int i = 0; i < BigDipperModel.positions.Length; i++)
{
array[i] = BigDipperModel.positions[i];
}
}
positionBufferPtr = buffer.GetBufferPtr();
}
}
return(positionBufferPtr);
}
else if (bufferName == color)
{
if (colorBufferPtr == null)
{
using (var buffer = new VertexAttributeBuffer <vec3>(
varNameInShader, VertexAttributeConfig.Vec3, BufferUsage.StaticDraw))
{
buffer.Create(BigDipperModel.colors.Length);
unsafe
{
var array = (vec3 *)buffer.Header.ToPointer();
for (int i = 0; i < BigDipperModel.colors.Length; i++)
{
array[i] = BigDipperModel.colors[i];
}
}
colorBufferPtr = buffer.GetBufferPtr();
}
}
return(colorBufferPtr);
}
else
{
throw new NotImplementedException();
}
}
/// <summary>
///
/// </summary>
/// <returns></returns>
public uint GetVertexCount()
{
VertexAttributeBufferPtr positionBufferPtr = this.PositionBufferPtr;
if (positionBufferPtr == null)
{
return(0);
}
int byteLength = positionBufferPtr.ByteLength;
int vertexLength = positionBufferPtr.DataSize * positionBufferPtr.DataTypeByteLength;
uint vertexCount = (uint)(byteLength / vertexLength);
return(vertexCount);
}
/// <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;
}
/// <summary>
///
/// </summary>
protected override void DoInitialize()
{
// init shader program.
ShaderProgram program = this.shaderCodes.CreateProgram();
// init property buffer objects.
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 == positionNameInIBufferable)
{
positionBufferPtr = new VertexAttributeBufferPtr(
"in_Position",// in_Postion same with in the PickingShader.vert shader
bufferPtr.BufferId,
bufferPtr.Config,
bufferPtr.Length,
bufferPtr.ByteLength);
}
list.Add(bufferPtr);
}
vertexAttributeBufferPtrs = list.ToArray();
}
// init index buffer
OneIndexBufferPtr indexBufferPtr;
{
using (var buffer = new OneIndexBuffer(IndexElementType.UInt,
DrawMode.Points, // any mode is OK as we'll update it later in other place.
BufferUsage.DynamicDraw))
{
buffer.Create(positionBufferPtr.ByteLength / (positionBufferPtr.DataSize * positionBufferPtr.DataTypeByteLength));
indexBufferPtr = buffer.GetBufferPtr() as OneIndexBufferPtr;
}
this.maxElementCount = indexBufferPtr.ElementCount;
indexBufferPtr.ElementCount = 0;// 高亮0个图元
// RULE: Renderer takes uint.MaxValue, ushort.MaxValue or byte.MaxValue as PrimitiveRestartIndex. So take care this rule when designing a model's index buffer.
GLSwitch glSwitch = new PrimitiveRestartSwitch(indexBufferPtr);
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;
this.positionBufferPtr = positionBufferPtr;
}
