/// <summary>
/// 遍历以<see cref="lastVerteID"/>为最后一个顶点的图元，
/// 瞄准每个图元的索引（例如1个三角形有3个索引）中的最后一个索引，
/// 将此索引在<see cref="indexBufferPtr"/>中的索引（位置）收集起来。
/// </summary>
/// <param name="lastVertexId"></param>
/// <returns></returns>
private List <RecognizedPrimitiveIndex> GetLastIndexIdList(RenderEventArgs arg, uint lastVertexId)
{
PrimitiveRecognizer recognizer = PrimitiveRecognizerFactory.Create(
(arg.RenderMode == RenderModes.ColorCodedPicking &&
arg.PickingGeometryType == GeometryType.Point &&
this.indexBufferPtr.Mode.ToGeometryType() == GeometryType.Line) ?
DrawMode.Points : this.indexBufferPtr.Mode);
PrimitiveRestartSwitch glSwitch = GetPrimitiveRestartSwitch();
OpenGL.BindBuffer(BufferTarget.ElementArrayBuffer, this.indexBufferPtr.BufferId);
IntPtr pointer = OpenGL.MapBuffer(BufferTarget.ElementArrayBuffer, MapBufferAccess.ReadOnly);
List <RecognizedPrimitiveIndex> lastIndexIdList = null;
if (glSwitch == null)
{
lastIndexIdList = recognizer.Recognize(lastVertexId, pointer, this.indexBufferPtr as OneIndexBufferPtr);
}
else
{
lastIndexIdList = recognizer.Recognize(lastVertexId, pointer, this.indexBufferPtr as OneIndexBufferPtr, glSwitch.RestartIndex);
}
OpenGL.UnmapBuffer(BufferTarget.ElementArrayBuffer);
OpenGL.BindBuffer(BufferTarget.ElementArrayBuffer, 0);
return(lastIndexIdList);
}
/// <summary>
/// 遍历以<paramref name="lastVertexId"/>为最后一个顶点的图元，
/// 瞄准每个图元的索引（例如1个三角形有3个索引）中的最后一个索引，
/// 将此索引在<see cref="IndexBufferPtr"/>中的索引（位置）收集起来。
/// </summary>
/// <param name="arg"></param>
/// <param name="lastVertexId"></param>
/// <returns></returns>
private List <RecognizedPrimitiveInfo> GetLastIndexIdList(RenderEventArgs arg, uint lastVertexId)
{
PrimitiveRecognizer recognizer = PrimitiveRecognizerFactory.Create(
(arg.RenderMode == RenderModes.ColorCodedPicking &&
arg.PickingGeometryType == GeometryType.Point &&
this.indexBufferPtr.Mode.ToGeometryType() == GeometryType.Line) ?
DrawMode.Points : this.indexBufferPtr.Mode);
PrimitiveRestartSwitch glSwitch = GetPrimitiveRestartSwitch();
var bufferPtr = this.indexBufferPtr as OneIndexBufferPtr;
IntPtr pointer = bufferPtr.MapBuffer(MapBufferAccess.ReadOnly);
List <RecognizedPrimitiveInfo> primitiveInfoList = null;
if (glSwitch == null)
{
primitiveInfoList = recognizer.Recognize(lastVertexId, pointer, this.indexBufferPtr as OneIndexBufferPtr);
}
else
{
primitiveInfoList = recognizer.Recognize(lastVertexId, pointer, this.indexBufferPtr as OneIndexBufferPtr, glSwitch.RestartIndex);
}
bufferPtr.UnmapBuffer();
return(primitiveInfoList);
}
protected override void DoInitialize()
{
// init shader program
this.Program = PickingShaderHelper.GetPickingShaderProgram();
// init property buffer objects
var propertyBufferPtrs = new PropertyBufferPtr[propertyNameMap.Count()];
int index = 0;
foreach (var item in propertyNameMap)
{
PropertyBufferPtr bufferPtr = this.bufferable.GetProperty(
item.NameInIBufferable, item.VarNameInShader);
if (bufferPtr == null)
{
throw new Exception();
}
propertyBufferPtrs[index++] = bufferPtr;
}
this.propertyBufferPtrs = propertyBufferPtrs;
this.indexBufferPtr = this.bufferable.GetIndex();
foreach (var item in propertyNameMap)
{
PropertyBufferPtr bufferPtr = this.bufferable.GetProperty(
item.NameInIBufferable, item.VarNameInShader);
if (bufferPtr == null)
{
throw new Exception();
}
if (item.NameInIBufferable == positionNameInIBufferable)
{
this.positionBufferPtr = new PropertyBufferPtr(
"in_Position",// in_Postion same with in the PickingShader.vert shader
bufferPtr.BufferId,
bufferPtr.DataSize,
bufferPtr.DataType,
bufferPtr.Length,
bufferPtr.ByteLength);
break;
}
}
// 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 = this.indexBufferPtr as OneIndexBufferPtr;
if (ptr != null)
{
GLSwitch glSwitch = new PrimitiveRestartSwitch(ptr);
this.switchList.Add(glSwitch);
}
// 由于picking.vert/frag只支持vec3的position buffer，所以有此硬性规定。
if (this.positionBufferPtr.DataSize != 3 || this.positionBufferPtr.DataType != OpenGL.GL_FLOAT)
{
throw new Exception(string.Format("Position buffer must use a type composed of 3 float as PropertyBuffer<T>'s T!"));
}
}
private void ColorCodedRender(RenderEventArgs arg, IndexBufferPtr temporaryIndexBufferPtr = null)
{
UpdatePolygonMode(arg.PickingGeometryType);
ShaderProgram program = this.Program;
// 绑定shader
program.Bind();
program.SetUniform("pickingBaseId",
temporaryIndexBufferPtr == null ? (int)this.PickingBaseId : 0);
UniformMat4 uniformmMVP4Picking = this.uniformmMVP4Picking;
bool mvpUpdated = uniformmMVP4Picking.Updated;
if (mvpUpdated)
{
uniformmMVP4Picking.SetUniform(program);
}
PickingSwitchesOn();
GLSwitch primitiveRestartIndexSwitch = null;
var oneIndexBufferPtr = temporaryIndexBufferPtr as OneIndexBufferPtr;
if (oneIndexBufferPtr != null)
{
primitiveRestartIndexSwitch = new PrimitiveRestartSwitch(oneIndexBufferPtr);
primitiveRestartIndexSwitch.On();
}
if (this.vertexArrayObject == null)
{
var vertexArrayObject = new VertexArrayObject(
this.indexBufferPtr, this.positionBufferPtr);
vertexArrayObject.Create(arg, program);
this.vertexArrayObject = vertexArrayObject;
}
//else
{
this.vertexArrayObject.Render(arg, program, temporaryIndexBufferPtr);
}
if (oneIndexBufferPtr != null)
{
primitiveRestartIndexSwitch.Off();
}
PickingSwitchesOff();
if (mvpUpdated)
{
uniformmMVP4Picking.ResetUniform(program);
}
// 解绑shader
program.Unbind();
}
protected override void DoInitialize()
{
base.DoInitialize();
// init index buffer
var primitiveRestartSwitch4Picking = new PrimitiveRestartSwitch(this.indexBufferPtr as OneIndexBufferPtr);
this.primitiveRestartSwitch4Picking = primitiveRestartSwitch4Picking;
this.switchList.Add(primitiveRestartSwitch4Picking);
}
protected override void DoInitialize()
{
base.DoInitialize();
var renderer = this.Renderer as OneIndexRenderer;
if (renderer != null)
{
GLSwitch primitiveRestartSwitch = new PrimitiveRestartSwitch(renderer.IndexBufferPtr);
renderer.SwitchList.Add(primitiveRestartSwitch);
}
}
/// <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;
}
private void ColorCodedRender(RenderEventArgs arg, IndexBufferPtr temporaryIndexBufferPtr = null)
{
UpdatePolygonMode(arg.PickingGeometryType);
ShaderProgram program = this.Program;
// 绑定shader
program.Bind();
program.SetUniform("pickingBaseId",
temporaryIndexBufferPtr == null ? (int)this.PickingBaseId : 0);
UniformMat4 uniformmMVP4Picking = this.uniformmMVP4Picking;
{
mat4 projection = arg.Camera.GetProjectionMatrix();
mat4 view = arg.Camera.GetViewMatrix();
mat4 model = this.GetModelMatrix();
uniformmMVP4Picking.Value = projection * view * model;
}
uniformmMVP4Picking.SetUniform(program);
PickingSwitchesOn();
GLSwitch primitiveRestartIndexSwitch = null;
var oneIndexBufferPtr = temporaryIndexBufferPtr as OneIndexBufferPtr;
if (oneIndexBufferPtr != null)
{
primitiveRestartIndexSwitch = new PrimitiveRestartSwitch(oneIndexBufferPtr);
primitiveRestartIndexSwitch.On();
}
{
this.vertexArrayObject.Render(arg, program, temporaryIndexBufferPtr);
}
if (oneIndexBufferPtr != null)
{
primitiveRestartIndexSwitch.Off();
}
PickingSwitchesOff();
//if (mvpUpdated) { uniformmMVP4Picking.ResetUniform(program); }
// 解绑shader
program.Unbind();
}
private void NoPrimitiveRestartIndex(List <RecognizedPrimitiveIndex> lastIndexIdList)
{
PrimitiveRestartSwitch glSwitch = GetPrimitiveRestartSwitch();
if (glSwitch != null)
{
foreach (var lastIndexId in lastIndexIdList)
{
foreach (var indexId in lastIndexId.IndexIdList)
{
if (indexId == glSwitch.RestartIndex)
{
throw new Exception();
}
}
}
}
}
/// <summary>
///
/// </summary>
protected override void DoInitialize()
{
// init shader program
var program = new ShaderProgram();
var shaders = (from item in shaderCodes select item.CreateShader()).ToArray();
program.Create(shaders);
this.Program = program;
foreach (var item in shaders)
{
item.Delete();
}
// init property buffer objects
var propertyBufferPtrs = new PropertyBufferPtr[propertyNameMap.Count()];
int index = 0;
foreach (var item in propertyNameMap)
{
PropertyBufferPtr bufferPtr = this.bufferable.GetProperty(
item.NameInIBufferable, item.VarNameInShader);
if (bufferPtr == null)
{
throw new Exception(string.Format("[{0}] returns null buffer pointer!", this.bufferable));
}
propertyBufferPtrs[index++] = bufferPtr;
}
this.propertyBufferPtrs = propertyBufferPtrs;
this.indexBufferPtr = this.bufferable.GetIndex();
// 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 = this.indexBufferPtr as OneIndexBufferPtr;
if (ptr != null)
{
GLSwitch glSwitch = new PrimitiveRestartSwitch(ptr);
this.switchList.Add(glSwitch);
}
}
protected override void DoInitialize()
{
// init shader program
ShaderProgram program = new ShaderProgram();
var shaders = (from item in shaderCodes select item.CreateShader()).ToArray();
program.Create(shaders);
this.shaderProgram = program;
foreach (var item in shaders)
{
item.Delete();
}
// init property buffer objects
var propertyBufferPtrs = new PropertyBufferPtr[propertyNameMap.Count()];
int index = 0;
foreach (var item in propertyNameMap)
{
PropertyBufferPtr bufferPtr = this.bufferable.GetProperty(
item.nameInIBufferable, item.VarNameInShader);
if (bufferPtr == null)
{
throw new Exception();
}
propertyBufferPtrs[index++] = bufferPtr;
}
this.propertyBufferPtrs = propertyBufferPtrs;
this.indexBufferPtr = this.bufferable.GetIndex();
var ptr = this.indexBufferPtr as OneIndexBufferPtr;
if (ptr != null)
{
var glSwitch = new PrimitiveRestartSwitch(ptr);
this.switchList.Add(glSwitch);
}
}
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;
}