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axmol/cocos/renderer/CCRenderer.cpp

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/****************************************************************************
Copyright (c) 2013-2016 Chukong Technologies Inc.
http://www.cocos2d-x.org
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/
#include "renderer/CCRenderer.h"
#include <algorithm>
#include "renderer/CCTrianglesCommand.h"
#include "renderer/CCBatchCommand.h"
#include "renderer/CCCustomCommand.h"
#include "renderer/CCGroupCommand.h"
#include "renderer/CCPrimitiveCommand.h"
#include "renderer/CCMeshCommand.h"
#include "renderer/CCGLProgramCache.h"
#include "renderer/CCMaterial.h"
#include "renderer/CCTechnique.h"
#include "renderer/CCPass.h"
#include "renderer/CCRenderState.h"
#include "renderer/ccGLStateCache.h"
#include "base/CCConfiguration.h"
#include "base/CCDirector.h"
#include "base/CCEventDispatcher.h"
#include "base/CCEventListenerCustom.h"
#include "base/CCEventType.h"
#include "2d/CCCamera.h"
#include "2d/CCScene.h"
NS_CC_BEGIN
// helper
static bool compareRenderCommand(RenderCommand* a, RenderCommand* b)
{
return a->getGlobalOrder() < b->getGlobalOrder();
}
static bool compare3DCommand(RenderCommand* a, RenderCommand* b)
{
return a->getDepth() > b->getDepth();
}
// queue
RenderQueue::RenderQueue()
{
}
void RenderQueue::push_back(RenderCommand* command)
{
float z = command->getGlobalOrder();
if(z < 0)
{
_commands[QUEUE_GROUP::GLOBALZ_NEG].push_back(command);
}
else if(z > 0)
{
_commands[QUEUE_GROUP::GLOBALZ_POS].push_back(command);
}
else
{
if(command->is3D())
{
if(command->isTransparent())
{
_commands[QUEUE_GROUP::TRANSPARENT_3D].push_back(command);
}
else
{
_commands[QUEUE_GROUP::OPAQUE_3D].push_back(command);
}
}
else
{
_commands[QUEUE_GROUP::GLOBALZ_ZERO].push_back(command);
}
}
}
ssize_t RenderQueue::size() const
{
ssize_t result(0);
for(int index = 0; index < QUEUE_GROUP::QUEUE_COUNT; ++index)
{
result += _commands[index].size();
}
return result;
}
void RenderQueue::sort()
{
// Don't sort _queue0, it already comes sorted
std::stable_sort(std::begin(_commands[QUEUE_GROUP::TRANSPARENT_3D]), std::end(_commands[QUEUE_GROUP::TRANSPARENT_3D]), compare3DCommand);
std::stable_sort(std::begin(_commands[QUEUE_GROUP::GLOBALZ_NEG]), std::end(_commands[QUEUE_GROUP::GLOBALZ_NEG]), compareRenderCommand);
std::stable_sort(std::begin(_commands[QUEUE_GROUP::GLOBALZ_POS]), std::end(_commands[QUEUE_GROUP::GLOBALZ_POS]), compareRenderCommand);
}
RenderCommand* RenderQueue::operator[](ssize_t index) const
{
for(int queIndex = 0; queIndex < QUEUE_GROUP::QUEUE_COUNT; ++queIndex)
{
if(index < static_cast<ssize_t>(_commands[queIndex].size()))
return _commands[queIndex][index];
else
{
index -= _commands[queIndex].size();
}
}
CCASSERT(false, "invalid index");
return nullptr;
}
void RenderQueue::clear()
{
for(int i = 0; i < QUEUE_COUNT; ++i)
{
_commands[i].clear();
}
}
void RenderQueue::realloc(size_t reserveSize)
{
for(int i = 0; i < QUEUE_COUNT; ++i)
{
_commands[i] = std::vector<RenderCommand*>();
_commands[i].reserve(reserveSize);
}
}
void RenderQueue::saveRenderState()
{
_isDepthEnabled = glIsEnabled(GL_DEPTH_TEST) != GL_FALSE;
_isCullEnabled = glIsEnabled(GL_CULL_FACE) != GL_FALSE;
glGetBooleanv(GL_DEPTH_WRITEMASK, &_isDepthWrite);
CHECK_GL_ERROR_DEBUG();
}
void RenderQueue::restoreRenderState()
{
if (_isCullEnabled)
{
glEnable(GL_CULL_FACE);
RenderState::StateBlock::_defaultState->setCullFace(true);
}
else
{
glDisable(GL_CULL_FACE);
RenderState::StateBlock::_defaultState->setCullFace(false);
}
if (_isDepthEnabled)
{
glEnable(GL_DEPTH_TEST);
RenderState::StateBlock::_defaultState->setDepthTest(true);
}
else
{
glDisable(GL_DEPTH_TEST);
RenderState::StateBlock::_defaultState->setDepthTest(false);
}
glDepthMask(_isDepthWrite);
RenderState::StateBlock::_defaultState->setDepthWrite(_isDepthEnabled);
CHECK_GL_ERROR_DEBUG();
}
//
//
//
static const int DEFAULT_RENDER_QUEUE = 0;
//
// constructors, destructor, init
//
Renderer::Renderer()
:_lastBatchedMeshCommand(nullptr)
,_filledVertex(0)
,_filledIndex(0)
,_glViewAssigned(false)
,_isRendering(false)
,_isDepthTestFor2D(false)
,_triBatchesToDraw(nullptr)
,_triBatchesToDrawCapacity(-1)
#if CC_ENABLE_CACHE_TEXTURE_DATA
,_cacheTextureListener(nullptr)
#endif
{
_groupCommandManager = new (std::nothrow) GroupCommandManager();
_commandGroupStack.push(DEFAULT_RENDER_QUEUE);
RenderQueue defaultRenderQueue;
_renderGroups.push_back(defaultRenderQueue);
_queuedTriangleCommands.reserve(BATCH_TRIAGCOMMAND_RESERVED_SIZE);
// default clear color
_clearColor = Color4F::BLACK;
// for the batched TriangleCommand
_triBatchesToDrawCapacity = 500;
_triBatchesToDraw = (TriBatchToDraw*) malloc(sizeof(_triBatchesToDraw[0]) * _triBatchesToDrawCapacity);
}
Renderer::~Renderer()
{
_renderGroups.clear();
_groupCommandManager->release();
glDeleteBuffers(2, _buffersVBO);
free(_triBatchesToDraw);
if (Configuration::getInstance()->supportsShareableVAO())
{
glDeleteVertexArrays(1, &_buffersVAO);
GL::bindVAO(0);
}
#if CC_ENABLE_CACHE_TEXTURE_DATA
Director::getInstance()->getEventDispatcher()->removeEventListener(_cacheTextureListener);
#endif
}
void Renderer::initGLView()
{
#if CC_ENABLE_CACHE_TEXTURE_DATA
_cacheTextureListener = EventListenerCustom::create(EVENT_RENDERER_RECREATED, [this](EventCustom* event){
/** listen the event that renderer was recreated on Android/WP8 */
this->setupBuffer();
});
Director::getInstance()->getEventDispatcher()->addEventListenerWithFixedPriority(_cacheTextureListener, -1);
#endif
setupBuffer();
_glViewAssigned = true;
}
void Renderer::setupBuffer()
{
if(Configuration::getInstance()->supportsShareableVAO())
{
setupVBOAndVAO();
}
else
{
setupVBO();
}
}
void Renderer::setupVBOAndVAO()
{
//generate vbo and vao for trianglesCommand
glGenVertexArrays(1, &_buffersVAO);
GL::bindVAO(_buffersVAO);
glGenBuffers(2, &_buffersVBO[0]);
glBindBuffer(GL_ARRAY_BUFFER, _buffersVBO[0]);
glBufferData(GL_ARRAY_BUFFER, sizeof(_verts[0]) * VBO_SIZE, _verts, GL_DYNAMIC_DRAW);
// vertices
glEnableVertexAttribArray(GLProgram::VERTEX_ATTRIB_POSITION);
glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_POSITION, 3, GL_FLOAT, GL_FALSE, sizeof(V3F_C4B_T2F), (GLvoid*) offsetof( V3F_C4B_T2F, vertices));
// colors
glEnableVertexAttribArray(GLProgram::VERTEX_ATTRIB_COLOR);
glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_COLOR, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(V3F_C4B_T2F), (GLvoid*) offsetof( V3F_C4B_T2F, colors));
// tex coords
glEnableVertexAttribArray(GLProgram::VERTEX_ATTRIB_TEX_COORD);
glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_TEX_COORD, 2, GL_FLOAT, GL_FALSE, sizeof(V3F_C4B_T2F), (GLvoid*) offsetof( V3F_C4B_T2F, texCoords));
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, _buffersVBO[1]);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(_indices[0]) * INDEX_VBO_SIZE, _indices, GL_STATIC_DRAW);
// Must unbind the VAO before changing the element buffer.
GL::bindVAO(0);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
CHECK_GL_ERROR_DEBUG();
}
void Renderer::setupVBO()
{
glGenBuffers(2, &_buffersVBO[0]);
// Issue #15652
// Should not initialzie VBO with a large size (VBO_SIZE=65536),
// it may cause low FPS on some Android devices like LG G4 & Nexus 5X.
// It's probably because some implementations of OpenGLES driver will
// copy the whole memory of VBO which initialzied at the first time
// once glBufferData/glBufferSubData is invoked.
// For more discussion, please refer to https://github.com/cocos2d/cocos2d-x/issues/15652
// mapBuffers();
}
void Renderer::mapBuffers()
{
// Avoid changing the element buffer for whatever VAO might be bound.
GL::bindVAO(0);
glBindBuffer(GL_ARRAY_BUFFER, _buffersVBO[0]);
glBufferData(GL_ARRAY_BUFFER, sizeof(_verts[0]) * VBO_SIZE, _verts, GL_DYNAMIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, _buffersVBO[1]);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(_indices[0]) * INDEX_VBO_SIZE, _indices, GL_STATIC_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
CHECK_GL_ERROR_DEBUG();
}
void Renderer::addCommand(RenderCommand* command)
{
int renderQueue =_commandGroupStack.top();
addCommand(command, renderQueue);
}
void Renderer::addCommand(RenderCommand* command, int renderQueue)
{
CCASSERT(!_isRendering, "Cannot add command while rendering");
CCASSERT(renderQueue >=0, "Invalid render queue");
CCASSERT(command->getType() != RenderCommand::Type::UNKNOWN_COMMAND, "Invalid Command Type");
_renderGroups[renderQueue].push_back(command);
}
void Renderer::pushGroup(int renderQueueID)
{
CCASSERT(!_isRendering, "Cannot change render queue while rendering");
_commandGroupStack.push(renderQueueID);
}
void Renderer::popGroup()
{
CCASSERT(!_isRendering, "Cannot change render queue while rendering");
_commandGroupStack.pop();
}
int Renderer::createRenderQueue()
{
RenderQueue newRenderQueue;
_renderGroups.push_back(newRenderQueue);
return (int)_renderGroups.size() - 1;
}
void Renderer::processRenderCommand(RenderCommand* command)
{
auto commandType = command->getType();
if( RenderCommand::Type::TRIANGLES_COMMAND == commandType)
{
// flush other queues
flush3D();
auto cmd = static_cast<TrianglesCommand*>(command);
// flush own queue when buffer is full
if(_filledVertex + cmd->getVertexCount() > VBO_SIZE || _filledIndex + cmd->getIndexCount() > INDEX_VBO_SIZE)
{
CCASSERT(cmd->getVertexCount()>= 0 && cmd->getVertexCount() < VBO_SIZE, "VBO for vertex is not big enough, please break the data down or use customized render command");
CCASSERT(cmd->getIndexCount()>= 0 && cmd->getIndexCount() < INDEX_VBO_SIZE, "VBO for index is not big enough, please break the data down or use customized render command");
drawBatchedTriangles();
}
// queue it
_queuedTriangleCommands.push_back(cmd);
_filledIndex += cmd->getIndexCount();
_filledVertex += cmd->getVertexCount();
}
else if (RenderCommand::Type::MESH_COMMAND == commandType)
{
flush2D();
auto cmd = static_cast<MeshCommand*>(command);
if (cmd->isSkipBatching() || _lastBatchedMeshCommand == nullptr || _lastBatchedMeshCommand->getMaterialID() != cmd->getMaterialID())
{
flush3D();
CCGL_DEBUG_INSERT_EVENT_MARKER("RENDERER_MESH_COMMAND");
if(cmd->isSkipBatching())
{
// XXX: execute() will call bind() and unbind()
// but unbind() shouldn't be call if the next command is a MESH_COMMAND with Material.
// Once most of cocos2d-x moves to Pass/StateBlock, only bind() should be used.
cmd->execute();
}
else
{
cmd->preBatchDraw();
cmd->batchDraw();
_lastBatchedMeshCommand = cmd;
}
}
else
{
CCGL_DEBUG_INSERT_EVENT_MARKER("RENDERER_MESH_COMMAND");
cmd->batchDraw();
}
}
else if(RenderCommand::Type::GROUP_COMMAND == commandType)
{
flush();
int renderQueueID = ((GroupCommand*) command)->getRenderQueueID();
CCGL_DEBUG_PUSH_GROUP_MARKER("RENDERER_GROUP_COMMAND");
visitRenderQueue(_renderGroups[renderQueueID]);
CCGL_DEBUG_POP_GROUP_MARKER();
}
else if(RenderCommand::Type::CUSTOM_COMMAND == commandType)
{
flush();
auto cmd = static_cast<CustomCommand*>(command);
CCGL_DEBUG_INSERT_EVENT_MARKER("RENDERER_CUSTOM_COMMAND");
cmd->execute();
}
else if(RenderCommand::Type::BATCH_COMMAND == commandType)
{
flush();
auto cmd = static_cast<BatchCommand*>(command);
CCGL_DEBUG_INSERT_EVENT_MARKER("RENDERER_BATCH_COMMAND");
cmd->execute();
}
else if(RenderCommand::Type::PRIMITIVE_COMMAND == commandType)
{
flush();
auto cmd = static_cast<PrimitiveCommand*>(command);
CCGL_DEBUG_INSERT_EVENT_MARKER("RENDERER_PRIMITIVE_COMMAND");
cmd->execute();
}
else
{
CCLOGERROR("Unknown commands in renderQueue");
}
}
void Renderer::visitRenderQueue(RenderQueue& queue)
{
queue.saveRenderState();
//
//Process Global-Z < 0 Objects
//
const auto& zNegQueue = queue.getSubQueue(RenderQueue::QUEUE_GROUP::GLOBALZ_NEG);
if (zNegQueue.size() > 0)
{
if(_isDepthTestFor2D)
{
glEnable(GL_DEPTH_TEST);
glDepthMask(true);
glEnable(GL_BLEND);
RenderState::StateBlock::_defaultState->setDepthTest(true);
RenderState::StateBlock::_defaultState->setDepthWrite(true);
RenderState::StateBlock::_defaultState->setBlend(true);
}
else
{
glDisable(GL_DEPTH_TEST);
glDepthMask(false);
glEnable(GL_BLEND);
RenderState::StateBlock::_defaultState->setDepthTest(false);
RenderState::StateBlock::_defaultState->setDepthWrite(false);
RenderState::StateBlock::_defaultState->setBlend(true);
}
glDisable(GL_CULL_FACE);
RenderState::StateBlock::_defaultState->setCullFace(false);
for (const auto& zNegNext : zNegQueue)
{
processRenderCommand(zNegNext);
}
flush();
}
//
//Process Opaque Object
//
const auto& opaqueQueue = queue.getSubQueue(RenderQueue::QUEUE_GROUP::OPAQUE_3D);
if (opaqueQueue.size() > 0)
{
//Clear depth to achieve layered rendering
glEnable(GL_DEPTH_TEST);
glDepthMask(true);
glDisable(GL_BLEND);
glEnable(GL_CULL_FACE);
RenderState::StateBlock::_defaultState->setDepthTest(true);
RenderState::StateBlock::_defaultState->setDepthWrite(true);
RenderState::StateBlock::_defaultState->setBlend(false);
RenderState::StateBlock::_defaultState->setCullFace(true);
for (const auto& opaqueNext : opaqueQueue)
{
processRenderCommand(opaqueNext);
}
flush();
}
//
//Process 3D Transparent object
//
const auto& transQueue = queue.getSubQueue(RenderQueue::QUEUE_GROUP::TRANSPARENT_3D);
if (transQueue.size() > 0)
{
glEnable(GL_DEPTH_TEST);
glDepthMask(false);
glEnable(GL_BLEND);
glEnable(GL_CULL_FACE);
RenderState::StateBlock::_defaultState->setDepthTest(true);
RenderState::StateBlock::_defaultState->setDepthWrite(false);
RenderState::StateBlock::_defaultState->setBlend(true);
RenderState::StateBlock::_defaultState->setCullFace(true);
for (const auto& transNext : transQueue)
{
processRenderCommand(transNext);
}
flush();
}
//
//Process Global-Z = 0 Queue
//
const auto& zZeroQueue = queue.getSubQueue(RenderQueue::QUEUE_GROUP::GLOBALZ_ZERO);
if (zZeroQueue.size() > 0)
{
if(_isDepthTestFor2D)
{
glEnable(GL_DEPTH_TEST);
glDepthMask(true);
glEnable(GL_BLEND);
RenderState::StateBlock::_defaultState->setDepthTest(true);
RenderState::StateBlock::_defaultState->setDepthWrite(true);
RenderState::StateBlock::_defaultState->setBlend(true);
}
else
{
glDisable(GL_DEPTH_TEST);
glDepthMask(false);
glEnable(GL_BLEND);
RenderState::StateBlock::_defaultState->setDepthTest(false);
RenderState::StateBlock::_defaultState->setDepthWrite(false);
RenderState::StateBlock::_defaultState->setBlend(true);
}
glDisable(GL_CULL_FACE);
RenderState::StateBlock::_defaultState->setCullFace(false);
for (const auto& zZeroNext : zZeroQueue)
{
processRenderCommand(zZeroNext);
}
flush();
}
//
//Process Global-Z > 0 Queue
//
const auto& zPosQueue = queue.getSubQueue(RenderQueue::QUEUE_GROUP::GLOBALZ_POS);
if (zPosQueue.size() > 0)
{
if(_isDepthTestFor2D)
{
glEnable(GL_DEPTH_TEST);
glDepthMask(true);
glEnable(GL_BLEND);
RenderState::StateBlock::_defaultState->setDepthTest(true);
RenderState::StateBlock::_defaultState->setDepthWrite(true);
RenderState::StateBlock::_defaultState->setBlend(true);
}
else
{
glDisable(GL_DEPTH_TEST);
glDepthMask(false);
glEnable(GL_BLEND);
RenderState::StateBlock::_defaultState->setDepthTest(false);
RenderState::StateBlock::_defaultState->setDepthWrite(false);
RenderState::StateBlock::_defaultState->setBlend(true);
}
glDisable(GL_CULL_FACE);
RenderState::StateBlock::_defaultState->setCullFace(false);
for (const auto& zPosNext : zPosQueue)
{
processRenderCommand(zPosNext);
}
flush();
}
queue.restoreRenderState();
}
void Renderer::render()
{
//Uncomment this once everything is rendered by new renderer
//glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
//TODO: setup camera or MVP
_isRendering = true;
if (_glViewAssigned)
{
//Process render commands
//1. Sort render commands based on ID
for (auto &renderqueue : _renderGroups)
{
renderqueue.sort();
}
visitRenderQueue(_renderGroups[0]);
}
clean();
_isRendering = false;
}
void Renderer::clean()
{
// Clear render group
for (size_t j = 0, size = _renderGroups.size() ; j < size; j++)
{
//commands are owned by nodes
// for (const auto &cmd : _renderGroups[j])
// {
// cmd->releaseToCommandPool();
// }
_renderGroups[j].clear();
}
// Clear batch commands
_queuedTriangleCommands.clear();
_filledVertex = 0;
_filledIndex = 0;
_lastBatchedMeshCommand = nullptr;
}
void Renderer::clear()
{
//Enable Depth mask to make sure glClear clear the depth buffer correctly
glDepthMask(true);
glClearColor(_clearColor.r, _clearColor.g, _clearColor.b, _clearColor.a);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glDepthMask(false);
RenderState::StateBlock::_defaultState->setDepthWrite(false);
}
void Renderer::setDepthTest(bool enable)
{
if (enable)
{
glClearDepth(1.0f);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
RenderState::StateBlock::_defaultState->setDepthTest(true);
RenderState::StateBlock::_defaultState->setDepthFunction(RenderState::DEPTH_LEQUAL);
// glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
}
else
{
glDisable(GL_DEPTH_TEST);
RenderState::StateBlock::_defaultState->setDepthTest(false);
}
_isDepthTestFor2D = enable;
CHECK_GL_ERROR_DEBUG();
}
void Renderer::fillVerticesAndIndices(const TrianglesCommand* cmd)
{
memcpy(&_verts[_filledVertex], cmd->getVertices(), sizeof(V3F_C4B_T2F) * cmd->getVertexCount());
// fill vertex, and convert them to world coordinates
const Mat4& modelView = cmd->getModelView();
for(ssize_t i=0; i < cmd->getVertexCount(); ++i)
{
modelView.transformPoint(&(_verts[i + _filledVertex].vertices));
}
// fill index
const unsigned short* indices = cmd->getIndices();
for(ssize_t i=0; i< cmd->getIndexCount(); ++i)
{
_indices[_filledIndex + i] = _filledVertex + indices[i];
}
_filledVertex += cmd->getVertexCount();
_filledIndex += cmd->getIndexCount();
}
void Renderer::drawBatchedTriangles()
{
if(_queuedTriangleCommands.empty())
return;
CCGL_DEBUG_INSERT_EVENT_MARKER("RENDERER_BATCH_TRIANGLES");
_filledVertex = 0;
_filledIndex = 0;
/************** 1: Setup up vertices/indices *************/
_triBatchesToDraw[0].offset = 0;
_triBatchesToDraw[0].indicesToDraw = 0;
_triBatchesToDraw[0].cmd = nullptr;
int batchesTotal = 0;
int prevMaterialID = -1;
bool firstCommand = true;
for(const auto& cmd : _queuedTriangleCommands)
{
auto currentMaterialID = cmd->getMaterialID();
const bool batchable = !cmd->isSkipBatching();
fillVerticesAndIndices(cmd);
// in the same batch ?
if (batchable && (prevMaterialID == currentMaterialID || firstCommand))
{
CC_ASSERT(firstCommand || _triBatchesToDraw[batchesTotal].cmd->getMaterialID() == cmd->getMaterialID() && "argh... error in logic");
_triBatchesToDraw[batchesTotal].indicesToDraw += cmd->getIndexCount();
_triBatchesToDraw[batchesTotal].cmd = cmd;
}
else
{
// is this the first one?
if (!firstCommand) {
batchesTotal++;
_triBatchesToDraw[batchesTotal].offset = _triBatchesToDraw[batchesTotal-1].offset + _triBatchesToDraw[batchesTotal-1].indicesToDraw;
}
_triBatchesToDraw[batchesTotal].cmd = cmd;
_triBatchesToDraw[batchesTotal].indicesToDraw = (int) cmd->getIndexCount();
// is this a single batch ? Prevent creating a batch group then
if (!batchable)
currentMaterialID = -1;
}
// capacity full ?
if (batchesTotal + 1 >= _triBatchesToDrawCapacity) {
_triBatchesToDrawCapacity *= 1.4;
_triBatchesToDraw = (TriBatchToDraw*) realloc(_triBatchesToDraw, sizeof(_triBatchesToDraw[0]) * _triBatchesToDrawCapacity);
}
prevMaterialID = currentMaterialID;
firstCommand = false;
}
batchesTotal++;
/************** 2: Copy vertices/indices to GL objects *************/
auto conf = Configuration::getInstance();
if (conf->supportsShareableVAO() && conf->supportsMapBuffer())
{
//Bind VAO
GL::bindVAO(_buffersVAO);
//Set VBO data
glBindBuffer(GL_ARRAY_BUFFER, _buffersVBO[0]);
// option 1: subdata
// glBufferSubData(GL_ARRAY_BUFFER, sizeof(_quads[0])*start, sizeof(_quads[0]) * n , &_quads[start] );
// option 2: data
// glBufferData(GL_ARRAY_BUFFER, sizeof(_verts[0]) * _filledVertex, _verts, GL_STATIC_DRAW);
// option 3: orphaning + glMapBuffer
// FIXME: in order to work as fast as possible, it must "and the exact same size and usage hints it had before."
// source: https://www.opengl.org/wiki/Buffer_Object_Streaming#Explicit_multiple_buffering
// so most probably we won't have any benefit of using it
glBufferData(GL_ARRAY_BUFFER, sizeof(_verts[0]) * _filledVertex, nullptr, GL_STATIC_DRAW);
void *buf = glMapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY);
memcpy(buf, _verts, sizeof(_verts[0]) * _filledVertex);
glUnmapBuffer(GL_ARRAY_BUFFER);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, _buffersVBO[1]);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(_indices[0]) * _filledIndex, _indices, GL_STATIC_DRAW);
}
else
{
// Client Side Arrays
#define kQuadSize sizeof(_verts[0])
glBindBuffer(GL_ARRAY_BUFFER, _buffersVBO[0]);
glBufferData(GL_ARRAY_BUFFER, sizeof(_verts[0]) * _filledVertex , _verts, GL_DYNAMIC_DRAW);
GL::enableVertexAttribs(GL::VERTEX_ATTRIB_FLAG_POS_COLOR_TEX);
// vertices
glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_POSITION, 3, GL_FLOAT, GL_FALSE, kQuadSize, (GLvoid*) offsetof(V3F_C4B_T2F, vertices));
// colors
glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_COLOR, 4, GL_UNSIGNED_BYTE, GL_TRUE, kQuadSize, (GLvoid*) offsetof(V3F_C4B_T2F, colors));
// tex coords
glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_TEX_COORD, 2, GL_FLOAT, GL_FALSE, kQuadSize, (GLvoid*) offsetof(V3F_C4B_T2F, texCoords));
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, _buffersVBO[1]);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(_indices[0]) * _filledIndex, _indices, GL_STATIC_DRAW);
}
/************** 3: Draw *************/
for (int i=0; i<batchesTotal; ++i)
{
CC_ASSERT(_triBatchesToDraw[i].cmd && "Invalid batch");
_triBatchesToDraw[i].cmd->useMaterial();
glDrawElements(GL_TRIANGLES, (GLsizei) _triBatchesToDraw[i].indicesToDraw, GL_UNSIGNED_SHORT, (GLvoid*) (_triBatchesToDraw[i].offset*sizeof(_indices[0])) );
_drawnBatches++;
_drawnVertices += _triBatchesToDraw[i].indicesToDraw;
}
/************** 4: Cleanup *************/
if (Configuration::getInstance()->supportsShareableVAO())
{
//Unbind VAO
GL::bindVAO(0);
}
else
{
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
}
_queuedTriangleCommands.clear();
_filledVertex = 0;
_filledIndex = 0;
}
void Renderer::flush()
{
flush2D();
flush3D();
}
void Renderer::flush2D()
{
flushTriangles();
}
void Renderer::flush3D()
{
if (_lastBatchedMeshCommand)
{
CCGL_DEBUG_INSERT_EVENT_MARKER("RENDERER_BATCH_MESH");
_lastBatchedMeshCommand->postBatchDraw();
_lastBatchedMeshCommand = nullptr;
}
}
void Renderer::flushTriangles()
{
drawBatchedTriangles();
}
// helpers
bool Renderer::checkVisibility(const Mat4 &transform, const Size &size)
{
auto scene = Director::getInstance()->getRunningScene();
//If draw to Rendertexture, return true directly.
// only cull the default camera. The culling algorithm is valid for default camera.
if (!scene || (scene && scene->_defaultCamera != Camera::getVisitingCamera()))
return true;
auto director = Director::getInstance();
Rect visiableRect(director->getVisibleOrigin(), director->getVisibleSize());
// transform center point to screen space
float hSizeX = size.width/2;
float hSizeY = size.height/2;
Vec3 v3p(hSizeX, hSizeY, 0);
transform.transformPoint(&v3p);
Vec2 v2p = Camera::getVisitingCamera()->projectGL(v3p);
// convert content size to world coordinates
float wshw = std::max(fabsf(hSizeX * transform.m[0] + hSizeY * transform.m[4]), fabsf(hSizeX * transform.m[0] - hSizeY * transform.m[4]));
float wshh = std::max(fabsf(hSizeX * transform.m[1] + hSizeY * transform.m[5]), fabsf(hSizeX * transform.m[1] - hSizeY * transform.m[5]));
// enlarge visible rect half size in screen coord
visiableRect.origin.x -= wshw;
visiableRect.origin.y -= wshh;
visiableRect.size.width += wshw * 2;
visiableRect.size.height += wshh * 2;
bool ret = visiableRect.containsPoint(v2p);
return ret;
}
void Renderer::setClearColor(const Color4F &clearColor)
{
_clearColor = clearColor;
}
NS_CC_END
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