| // |
| // Copyright (c) 2002-2010 The ANGLE Project Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| // |
| |
| // geometry/VertexDataManager.h: Defines the VertexDataManager, a class that |
| // runs the Buffer translation process. |
| |
| #ifndef LIBGLESV2_GEOMETRY_VERTEXDATAMANAGER_H_ |
| #define LIBGLESV2_GEOMETRY_VERTEXDATAMANAGER_H_ |
| |
| #include <bitset> |
| #include <cstddef> |
| |
| #define GL_APICALL |
| #include <GLES2/gl2.h> |
| |
| #include "Context.h" |
| |
| namespace gl |
| { |
| |
| class Buffer; |
| class BufferBackEnd; |
| class TranslatedVertexBuffer; |
| struct TranslatedAttribute; |
| struct FormatConverter; |
| struct TranslatedIndexData; |
| |
| class VertexDataManager |
| { |
| public: |
| VertexDataManager(Context *context, BufferBackEnd *backend); |
| ~VertexDataManager(); |
| |
| void dirtyCurrentValues() { mDirtyCurrentValues = true; } |
| |
| GLenum preRenderValidate(GLint start, |
| GLsizei count, |
| TranslatedAttribute *outAttribs); |
| |
| GLenum preRenderValidate(const TranslatedIndexData &indexInfo, |
| TranslatedAttribute* outAttribs); |
| |
| private: |
| std::bitset<MAX_VERTEX_ATTRIBS> activeAttribs(); |
| |
| class TranslationHelper |
| { |
| public: |
| virtual ~TranslationHelper() { } |
| |
| virtual void translate(const FormatConverter &converter, GLsizei stride, const void *source, void *dest) = 0; |
| }; |
| |
| class ArrayTranslationHelper : public TranslationHelper |
| { |
| public: |
| ArrayTranslationHelper(GLint first, GLsizei count); |
| |
| void translate(const FormatConverter &converter, GLsizei stride, const void *source, void *dest); |
| |
| private: |
| GLint mFirst; |
| GLsizei mCount; |
| }; |
| |
| class IndexedTranslationHelper : public TranslationHelper |
| { |
| public: |
| IndexedTranslationHelper(const Index *indices, Index minIndex, GLsizei count); |
| |
| void translate(const FormatConverter &converter, GLint stride, const void *source, void *dest); |
| |
| private: |
| const Index *mIndices; |
| Index mMinIndex; |
| GLsizei mCount; |
| }; |
| |
| GLenum internalPreRenderValidate(const AttributeState *attribs, |
| const std::bitset<MAX_VERTEX_ATTRIBS> &activeAttribs, |
| Index minIndex, |
| Index maxIndex, |
| TranslationHelper *translator, |
| TranslatedAttribute *outAttribs); |
| |
| void reloadCurrentValues(const AttributeState *attribs, std::size_t *offset); |
| |
| void processNonArrayAttributes(const AttributeState *attribs, const std::bitset<MAX_VERTEX_ATTRIBS> &activeAttribs, TranslatedAttribute *translated); |
| |
| std::size_t typeSize(GLenum type) const; |
| std::size_t interpretGlStride(const AttributeState &attrib) const; |
| |
| std::size_t roundUp(std::size_t x, std::size_t multiple) const; |
| std::size_t spaceRequired(const AttributeState &attrib, std::size_t maxVertex) const; |
| |
| Context *mContext; |
| BufferBackEnd *mBackend; |
| |
| TranslatedVertexBuffer *mCurrentValueBuffer; |
| |
| TranslatedVertexBuffer *mStreamBuffer; |
| |
| bool mDirtyCurrentValues; |
| }; |
| |
| } |
| |
| #endif // LIBGLESV2_GEOMETRY_VERTEXDATAMANAGER_H_ |