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();
}
