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Diffstat (limited to 'o3d/core/cross/stream.h')
| -rw-r--r-- | o3d/core/cross/stream.h | 181 |
1 files changed, 0 insertions, 181 deletions
diff --git a/o3d/core/cross/stream.h b/o3d/core/cross/stream.h deleted file mode 100644 index 15830bd..0000000 --- a/o3d/core/cross/stream.h +++ /dev/null @@ -1,181 +0,0 @@ -/* - * Copyright 2009, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - - -// This file contains declarations for the Stream class. - -#ifndef O3D_CORE_CROSS_STREAM_H_ -#define O3D_CORE_CROSS_STREAM_H_ - -#include <vector> -#include "core/cross/field.h" -#include "core/cross/param.h" - -namespace o3d { - -class ServiceLocator; - -// A stream object defines how Field data is interpreted by a Shape. It contains -// a reference to a Field the semantic associated with it. -class Stream : public ObjectBase { - public: - typedef SmartPointer<Stream> Ref; - - // Semantics used when binding buffers to the shape. They determine how - // the Stream links up to the shader inputs. - // TODO: replace the Stream::Semantic types with proper semantic - // strings and maps that allow aliasing of semantics. - enum Semantic { - UNKNOWN_SEMANTIC = 0, - POSITION, // Position - NORMAL, // Normal - TANGENT, // Tangent - BINORMAL, // Binormal - COLOR, // Color - TEXCOORD, // Texture Coordinate - }; - - Stream(ServiceLocator* service_locator, - Field *field, - unsigned int start_index, - Semantic semantic, - int semantic_index); - - // Returns a pointer to the associated Field object. - Field& field() const { - // This is guaranteed to be not NULL. - return *field_.Get(); - } - - // Returns the semantic specified for the Stream. - Semantic semantic() const { return semantic_; } - - // Returns the semantic index specified for the Stream - // (eg., TEXCOORD1 = 1, BINORMAL7 = 7, etc). - int semantic_index() const { return semantic_index_; } - - // Returns the start index for the specified Stream. - unsigned int start_index() const { return start_index_; } - - // Returns the maximum vertices available given the stream's settings - // and its buffer. - unsigned GetMaxVertices() const; - - // Gets the last field change count. - unsigned int last_field_change_count() const { - return last_field_change_count_; - } - - // Sets the last field change count. - void set_last_field_change_count(unsigned int count) const { - last_field_change_count_ = count; - } - - static const char* GetSemanticDescription(Semantic); - - private: - Field::Ref field_; - - // which field in the buffer this stream is using - unsigned int field_id_; - - // Used to track if the field has changed offsets. - mutable unsigned int last_field_change_count_; - - unsigned int start_index_; - Semantic semantic_; - int semantic_index_; - - O3D_DECL_CLASS(Stream, ObjectBase); - DISALLOW_COPY_AND_ASSIGN(Stream); -}; - -// Defines a type for an array Stream objects. -typedef std::vector<Stream::Ref> StreamRefVector; - -// A Param that can modify the contents of a vertex buffer. -// NOTE: This param behaves like no other param and therefore seems a little -// fishy. It feels like ParamChar (if there was such a thing) where you can do -// things like: -// -// param->set_value(value); -// value = param->value(); -// param->bind(otherParamVertexBufferStream); -// -// But, the difference is when you call param->value(), if the param is bound to -// another stream we don't copy the stream or reference to the stream like other -// params. Using SlaveParamVertexBufferStream which is derived from this class -// a call to value() will call UpdateValue() which will call a virtual -// ComputeValue() which will update the vertex buffers in the destination stream -// using whatever means the owner of the Slave param specifies. -class ParamVertexBufferStream : public TypedParamBase<char> { - public: - typedef SmartPointer<ParamVertexBufferStream> Ref; - - ParamVertexBufferStream(ServiceLocator* service_locator, - Stream* stream, - bool dynamic, - bool read_only) - : TypedParamBase<char>(service_locator, dynamic, read_only), - stream_(stream) { - DCHECK(stream); - } - - virtual void CopyDataFromParam(Param *source_param); - - const Stream& stream() { - // We guarantee there will always be a stream. - return *stream_.Get(); - } - - // Marks the stream as valid so that it will not be updated again until - // invalid. - void ValidateStream() { - Validate(); - } - - // Updates the stream if its bound to anything. - void UpdateStream() { - UpdateValue(); - } - - private: - Stream::Ref stream_; - - O3D_DECL_CLASS(ParamVertexBufferStream, Param); - DISALLOW_COPY_AND_ASSIGN(ParamVertexBufferStream); -}; - -typedef std::vector<ParamVertexBufferStream::Ref> StreamParamVector; - -} // namespace o3d - -#endif // O3D_CORE_CROSS_STREAM_H_ |