/// <summary>
///
/// </summary>
protected override void DoInitialize()
{
// init shader program.
ShaderProgram program = this.shaderCodes.CreateProgram();
// init property buffer objects.
VertexBuffer positionBuffer = null;
IBufferable model = this.DataSource;
VertexBuffer[] vertexAttributeBuffers;
{
var list = new List<VertexBuffer>();
foreach (AttributeMap.NamePair item in this.attributeMap)
{
VertexBuffer buffer = model.GetVertexAttributeBuffer(
item.NameInIBufferable, item.VarNameInShader);
if (buffer == null) { throw new Exception(string.Format("[{0}] returns null buffer pointer!", model)); }
if (item.NameInIBufferable == positionNameInIBufferable)
{
if (positionBuffer != null)
{ throw new Exception(string.Format("Duplicate position buffer is not allowed!")); }
positionBuffer = buffer.Clone() as VertexBuffer;
positionBuffer.VarNameInVertexShader = "in_Position";// in_Postion same with in the PickingShader.vert shader
}
list.Add(buffer);
}
vertexAttributeBuffers = list.ToArray();
}
// init index buffer
OneIndexBuffer indexBuffer;
{
var mode = DrawMode.Points;//any mode is OK as we'll update it later in other place.
indexBuffer = Buffer.Create(IndexBufferElementType.UInt, positionBuffer.ByteLength / (positionBuffer.Config.GetDataSize() * positionBuffer.Config.GetDataTypeByteLength()), mode, BufferUsage.StaticDraw);
this.maxElementCount = indexBuffer.ElementCount;
indexBuffer.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.
GLState glState = new PrimitiveRestartState(indexBuffer.ElementType);
this.stateList.Add(glState);
}
// init VAO.
var vertexArrayObject = new VertexArrayObject(indexBuffer, vertexAttributeBuffers);
vertexArrayObject.Initialize(program);
// sets fields.
this.Program = program;
this.vertexAttributeBuffers = vertexAttributeBuffers;
this.indexBuffer = indexBuffer;
this.vertexArrayObject = vertexArrayObject;
this.positionBuffer = positionBuffer;
}
protected override void DoInitialize()
{
// init shader program.
ShaderProgram program = this.shaderCodes.CreateProgram();
VertexBuffer positionBuffer = null;
IBufferable model = this.DataSource;
VertexBuffer[] vertexAttributeBuffers;
{
var list = new List<VertexBuffer>();
foreach (AttributeMap.NamePair item in this.attributeMap)
{
VertexBuffer buffer = model.GetVertexAttributeBuffer(
item.NameInIBufferable, item.VarNameInShader);
if (buffer == null) { throw new Exception(string.Format("[{0}] returns null buffer pointer!", model)); }
if (item.NameInIBufferable == this.PositionNameInIBufferable)
{
positionBuffer = buffer.Clone() as VertexBuffer;
positionBuffer.VarNameInVertexShader = "in_Position";// in_Postion same with in the PickingShader.vert shader
break;
}
list.Add(buffer);
}
vertexAttributeBuffers = list.ToArray();
}
// 由于picking.vert/frag只支持vec3的position buffer，所以有此硬性规定。
if (positionBuffer == null || positionBuffer.Config != VBOConfig.Vec3)
{ throw new Exception(string.Format("Position buffer must use a type composed of 3 float as PropertyBuffer<T>'s T!")); }
// init index buffer.
IndexBuffer indexBuffer = model.GetIndexBuffer();
// 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 = indexBuffer as OneIndexBuffer;
if (ptr != null)
{
GLState glState = new PrimitiveRestartState(ptr.ElementType);
this.stateList.Add(glState);
}
// init VAO.
var vertexArrayObject = new VertexArrayObject(indexBuffer, positionBuffer);
vertexArrayObject.Initialize(program);
// sets fields.
this.Program = program;
this.vertexAttributeBuffers = new VertexBuffer[] { positionBuffer };
this.indexBuffer = indexBuffer;
this.vertexArrayObject = vertexArrayObject;
}
/// <summary>
///
/// </summary>
protected override void DoInitialize()
{
// init shader program.
ShaderProgram program = this.shaderCodes.CreateProgram();
// init vertex attribute buffer objects.
IBufferable model = this.DataSource;
VertexBuffer[] vertexAttributeBuffers;
{
var list = new List<VertexBuffer>();
foreach (AttributeMap.NamePair item in this.attributeMap)
{
VertexBuffer buffer = model.GetVertexAttributeBuffer(
item.NameInIBufferable, item.VarNameInShader);
if (buffer == null) { throw new Exception(string.Format("[{0}] returns null buffer pointer!", model)); }
list.Add(buffer);
}
vertexAttributeBuffers = list.ToArray();
}
// init index buffer.
IndexBuffer indexBuffer = model.GetIndexBuffer();
// 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 = indexBuffer as OneIndexBuffer;
if (ptr != null)
{
GLState glState = new PrimitiveRestartState(ptr.ElementType);
this.stateList.Add(glState);
}
// init VAO.
var vertexArrayObject = new VertexArrayObject(indexBuffer, vertexAttributeBuffers);
vertexArrayObject.Initialize(program);
// sets fields.
this.Program = program;
this.vertexAttributeBuffers = vertexAttributeBuffers;
this.indexBuffer = indexBuffer;
this.vertexArrayObject = vertexArrayObject;
}
/// <summary>
///
/// </summary>
/// <param name="model"></param>
/// <returns></returns>
public RenderMethod ToRenderMethod(IBufferSource model)
{
// init shader program.
ShaderProgram program = this.programProvider.GetShaderProgram();
// init vertex attribute buffer objects.
var attrCount = this.map.Count(); // how many kinds of vertex attributes?
var allBlocks = new List <VertexBuffer> [attrCount];
var allNames = new string[attrCount];
int blockCount = 0; // how many blocks an attribute is divided into?
int index = 0;
foreach (AttributeMap.NamePair item in this.map)
{
blockCount = 0;
allBlocks[index] = new List <VertexBuffer>();
foreach (var buffer in model.GetVertexAttributeBuffer(item.NameInIBufferSource))
{
if (buffer == null)
{
throw new Exception(string.Format("[{0}] returns null buffer pointer!", model));
}
allBlocks[index].Add(buffer);
allNames[index] = item.VarNameInShader;
blockCount++;
}
if (blockCount != allBlocks[0].Count)
{
throw new Exception("Not all vertex attribute buffers' block count are the same!");
}
index++;
}
// init draw commands.
var drawCmds = (from item in model.GetDrawCommand()
where (item != null)
select item).ToArray();
int cmdCount = drawCmds.Length;
if (attrCount > 0 && cmdCount != blockCount)
{
throw new Exception("Draw Commands count != vertex buffer block count.");
}
// init VAOs.
var vaos = new VertexArrayObject[cmdCount];
for (int c = 0; c < cmdCount; c++)
{
var vertexShaderAttributes = new VertexShaderAttribute[attrCount];
for (int a = 0; a < attrCount; a++)
{
List <VertexBuffer> vertexAttribute = allBlocks[a];
string varNameInShader = allNames[a];
vertexShaderAttributes[a] = new VertexShaderAttribute(vertexAttribute[c], varNameInShader);
}
vaos[c] = new VertexArrayObject(drawCmds[c], program, vertexShaderAttributes);
}
var renderUnit = new RenderMethod(program, vaos, this.states);
// RULE: Renderer takes uint.MaxValue, ushort.MaxValue or byte.MaxValue as PrimitiveRestartIndex. So take care of this rule when designing a model's index buffer.
foreach (var cmd in drawCmds)
{
var ptr = cmd as IHasIndexBuffer;
if (ptr != null)
{
GLState glState = new PrimitiveRestartState(ptr.IndexBufferObject.ElementType);
renderUnit.StateList.Add(glState);
break;
}
}
return(renderUnit);
}
/// <summary>
///
/// </summary>
protected override void DoInitialize()
{
// init shader program.
ShaderProgram program = this.renderProgramProvider.GetShaderProgram();
ShaderProgram pickProgram = this.pickProgramProvider.GetShaderProgram();
// init vertex attribute buffer objects.
IBufferable model = this.DataSource;
VertexBuffer positionBuffer = null;
VertexShaderAttribute[] vertexAttributeBuffers;
{
var list = new List <VertexShaderAttribute>();
foreach (AttributeMap.NamePair item in this.attributeMap)
{
VertexBuffer buffer = model.GetVertexAttributeBuffer(
item.NameInIBufferable, item.VarNameInShader);
if (buffer == null)
{
throw new Exception(string.Format("[{0}] returns null buffer pointer!", model));
}
list.Add(new VertexShaderAttribute(buffer, item.VarNameInShader));
if (item.VarNameInShader == this.PositionNameInVertexShader)
{
positionBuffer = buffer;
}
}
vertexAttributeBuffers = list.ToArray();
}
// 由于picking.vert/frag只支持vec3的position buffer，所以有此硬性规定。
if (positionBuffer == null || positionBuffer.Config != VBOConfig.Vec3)
{
throw new Exception(string.Format("Position buffer must use a type composed of 3 float as PropertyBuffer<T>'s T!"));
}
// init index buffer.
IndexBuffer indexBuffer = model.GetIndexBuffer();
// 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 = indexBuffer as OneIndexBuffer;
if (ptr != null)
{
GLState glState = new PrimitiveRestartState(ptr.ElementType);
this.stateList.Add(glState);
this.picker = new OneIndexPicker(this);
}
else
{
this.picker = new ZeroIndexPicker(this);
}
// init VAO.
var vertexArrayObject = new VertexArrayObject(indexBuffer, vertexAttributeBuffers);
vertexArrayObject.Initialize(program);
var pickingVAO = new VertexArrayObject(indexBuffer, new VertexShaderAttribute(positionBuffer, "in_Position"));
pickingVAO.Initialize(pickProgram);
// sets fields.
this.RenderProgram = program;
this.PickProgram = pickProgram;
this.vertexShaderAttributes = vertexAttributeBuffers;
this.positionBuffer = positionBuffer;
this.indexBuffer = indexBuffer;
this.vertexArrayObject = vertexArrayObject;
this.pickVertexArrayObject = pickingVAO;
}
protected override void DoRender(RenderEventArgs arg)
{
ShaderProgram program = this.shaderProgram;
if (program == null)
{
return;
}
// 绑定shader
program.Bind();
var updatedUniforms = (from item in this.uniformVariables where item.Updated select item).ToArray();
foreach (var item in updatedUniforms)
{
item.SetUniform(program);
}
int count = this.switchList.Count;
for (int i = 0; i < count; i++)
{
this.switchList[i].On();
}
IndexBufferPtr indexBufferPtr = this.indexBufferPtr;
if (this.vertexArrayObject == null)
{
PropertyBufferPtr[] propertyBufferPtrs = this.propertyBufferPtrs;
if (indexBufferPtr != null && propertyBufferPtrs != null)
{
var vertexArrayObject = new VertexArrayObject(
indexBufferPtr, propertyBufferPtrs);
vertexArrayObject.Create(arg, program);
this.vertexArrayObject = vertexArrayObject;
}
}
{
VertexArrayObject vertexArrayObject = this.vertexArrayObject;
if (vertexArrayObject != null)
{
if (vertexArrayObject.IndexBufferPtr != indexBufferPtr)
{
vertexArrayObject.IndexBufferPtr = indexBufferPtr;
}
vertexArrayObject.Render(arg, program);
}
}
for (int i = count - 1; i >= 0; i--)
{
this.switchList[i].Off();
}
foreach (var item in updatedUniforms)
{
item.ResetUniform(program);
}
// 解绑shader
program.Unbind();
}
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>
/// <param name="model"></param>
/// <returns></returns>
public RenderMethod ToRenderMethod(IBufferSource model)
{
// init shader program.
ShaderProgram program = this.programProvider.GetShaderProgram();
// init vertex attribute buffer objects.
var attrCount = this.map.Count(); // how many kinds of vertex attributes?
var allBlocks = new List <VertexBuffer> [attrCount];
var allNames = new string[attrCount];
int blockCount = 0; // how many blocks an attribute is divided into?
int index = 0;
foreach (AttributeMap.NamePair item in this.map)
{
blockCount = 0;
allBlocks[index] = new List <VertexBuffer>();
foreach (var buffer in model.GetVertexAttributeBuffer(item.NameInIBufferSource))
{
if (buffer == null)
{
throw new Exception(string.Format("[{0}] returns null buffer pointer!", model));
}
allBlocks[index].Add(buffer);
allNames[index] = item.VarNameInShader;
blockCount++;
}
if (blockCount != allBlocks[0].Count)
{
throw new Exception("Not all vertex attribute buffers' block count are the same!");
}
index++;
}
// init draw commands.
var drawCmds = (from item in model.GetDrawCommand()
where (item != null)
select item).ToArray();
int cmdCount = drawCmds.Length;
if (attrCount > 0 && cmdCount != blockCount)
{
throw new Exception("Draw Commands count != vertex buffer block count.");
}
// init VAOs.
var vaos = new VertexArrayObject[cmdCount];
for (int c = 0; c < cmdCount; c++)
{
var vertexShaderAttributes = new VertexShaderAttribute[attrCount];
for (int a = 0; a < attrCount; a++)
{
List <VertexBuffer> vertexAttribute = allBlocks[a];
string varNameInShader = allNames[a];
vertexShaderAttributes[a] = new VertexShaderAttribute(vertexAttribute[c], varNameInShader);
}
vaos[c] = new VertexArrayObject(drawCmds[c], program, vertexShaderAttributes);
}
return(new RenderMethod(program, vaos, this.switches));
}
/// <summary>
/// A smallest unit that can render somthing.
/// </summary>
/// <param name="program"></param>
/// <param name="vao"></param>
/// <param name="positionBuffer"></param>
/// <param name="states"></param>
public IPickableRenderMethod(ShaderProgram program, VertexArrayObject vao, VertexBuffer positionBuffer, params GLState[] states)
: base(program, vao, states)
{
this.PositionBuffer = positionBuffer;
}
/// <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;
}
