82 lines
2.6 KiB
C++
82 lines
2.6 KiB
C++
/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <vector>
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#include <string>
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#include <assert.h>
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#include <string.h>
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// Convenient class used to hold the common context data shared
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// by both the GLESv1 and GLESv2 decoders. This corresponds to
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// vertex attribute buffers.
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class GLDecoderContextData {
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public:
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// List of supported vertex attribute indices, as they appear in
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// a glVertexAttribPointer() call.
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typedef enum {
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VERTEX_LOCATION = 0,
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NORMAL_LOCATION = 1,
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COLOR_LOCATION = 2,
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POINTSIZE_LOCATION = 3,
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TEXCOORD0_LOCATION = 4,
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TEXCOORD1_LOCATION = 5,
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TEXCOORD2_LOCATION = 6,
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TEXCOORD3_LOCATION = 7,
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TEXCOORD4_LOCATION = 8,
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TEXCOORD5_LOCATION = 9,
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TEXCOORD6_LOCATION = 10,
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TEXCOORD7_LOCATION = 11,
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MATRIXINDEX_LOCATION = 12,
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WEIGHT_LOCATION = 13,
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LAST_LOCATION = 14
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} PointerDataLocation;
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// Default constructor.
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GLDecoderContextData(int numLocations = kMaxVertexAttributes)
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: mPointerData(),
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mNumLocations(static_cast<unsigned>(numLocations)) {
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mPointerData.resize(mNumLocations);
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}
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// Store |len| bytes from |data| into the buffer associated with
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// vertex attribute index |loc|.
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void storePointerData(unsigned int loc, void *data, size_t len) {
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if (loc < mNumLocations) {
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std::string& ptrData = mPointerData[loc];
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ptrData.assign(reinterpret_cast<char*>(data), len);
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} else {
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// User error, don't do anything here
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}
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}
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// Return pointer to data associated with vertex attribute index |loc|
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void* pointerData(unsigned int loc) const {
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if (loc < mNumLocations) {
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return const_cast<char*>(mPointerData[loc].c_str());
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} else {
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// User error. Return nullptr.
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return nullptr;
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}
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}
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private:
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static const int kMaxVertexAttributes = 64;
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std::vector<std::string> mPointerData;
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unsigned mNumLocations = 0;
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};
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