bool IndexBuffer::init(size_t count, IndexBufferType type, BufferUsage usage)
{
m_type = type;
m_usage = usage;
m_count = count;
glGenBuffers(1, &m_bufferID);
m_context.setCurrentIndexBuffer(this);
glBufferData(GL_ELEMENT_ARRAY_BUFFER,
m_count * typeSize(m_type),
nullptr,
convertToGL(m_usage));
if (!checkGL("Error during creation of index buffer of element size %u",
(uint) typeSize(m_type)))
{
m_context.setCurrentIndexBuffer(nullptr);
return false;
}
if (RenderStats* stats = m_context.stats())
stats->addIndexBuffer(size());
return true;
}
bool VertexBuffer::init(const VertexFormat& format, size_t count, BufferUsage usage)
{
m_format = format;
m_usage = usage;
m_count = count;
glGenBuffers(1, &m_bufferID);
m_context.setCurrentVertexBuffer(this);
glBufferData(GL_ARRAY_BUFFER,
m_count * m_format.size(),
nullptr,
convertToGL(m_usage));
if (!checkGL("Error during creation of vertex buffer of format %s",
m_format.asString().c_str()))
{
m_context.setCurrentVertexBuffer(nullptr);
return false;
}
if (RenderStats* stats = m_context.stats())
stats->addVertexBuffer(size());
return true;
}
void AccelerometerTest::onAcceleration(Acceleration* acc, Event* event)
{
// double fNow = pAccelerationValue->timestamp;
//
// if (_lastTime > 0.0)
// {
// auto ptNow = convertToUI
// }
//
// _lastTime = fNow;
auto pDir = Director::getInstance();
/*FIXME: Testing on the Nexus S sometimes _ball is NULL */
if ( _ball == NULL ) {
return;
}
auto ballSize = _ball->getContentSize();
auto ptNow = _ball->getPosition();
auto ptTemp = pDir->convertToUI(ptNow);
ptTemp.x += acc->x * 9.81f;
ptTemp.y -= acc->y * 9.81f;
auto ptNext = pDir->convertToGL(ptTemp);
FIX_POS(ptNext.x, (VisibleRect::left().x+ballSize.width / 2.0), (VisibleRect::right().x - ballSize.width / 2.0));
FIX_POS(ptNext.y, (VisibleRect::bottom().y+ballSize.height / 2.0), (VisibleRect::top().y - ballSize.height / 2.0));
_ball->setPosition(ptNext);
}
void VertexBuffer::discard()
{
m_context.setCurrentVertexBuffer(this);
glBufferData(GL_ARRAY_BUFFER,
m_count * m_format.size(),
nullptr,
convertToGL(m_usage));
#if WENDY_DEBUG
checkGL("Error during vertex buffer discard");
#endif
}
bool TextureFramebuffer::setBuffer(Attachment attachment, Texture* newTexture,
const TextureImage& image, uint z)
{
if (isColorAttachment(attachment))
{
const RenderLimits& limits = m_context.limits();
const uint index = attachment - COLOR_BUFFER0;
if (index >= limits.maxColorAttachments)
{
logError("OpenGL context supports at most %u FBO color attachments",
limits.maxColorAttachments);
return false;
}
if (index >= limits.maxDrawBuffers)
{
logError("OpenGL context supports at most %u draw buffers",
limits.maxDrawBuffers);
return false;
}
}
Framebuffer& previous = m_context.currentFramebuffer();
apply();
if (m_textures[attachment])
m_textures[attachment]->detach(convertToGL(attachment));
m_textures[attachment] = newTexture;
if (m_textures[attachment])
m_textures[attachment]->attach(convertToGL(attachment), image, z);
previous.apply();
return true;
}
bool ClickedMe(const EventMouse* event, const Node *node)
{
auto rect = node->getBoundingBox();
Vec2 click;
if (std::string(cocos2dVersion()) == "cocos2d-x 3.5")
{
// Maybe a bug in cocos2d-x 3.4 - https://github.com/cocos2d/cocos2d-x/issues/8536
auto dir = Director::getInstance();
click = dir->convertToGL(Vec2(
event->getLocation().x,
event->getLocation().y - Director::getInstance()->getVisibleSize().height)
);
}
else
{
click = event->getLocation();
}
return rect.containsPoint(click);
}
void TextureFramebuffer::apply() const
{
glBindFramebuffer(GL_FRAMEBUFFER, m_bufferID);
GLenum enables[5];
GLsizei count = 0;
for (size_t i = 0; i < sizeof(enables) / sizeof(enables[0]); i++)
{
Attachment attachment = (Attachment) i;
if (m_textures[i] && isColorAttachment(attachment))
enables[count++] = convertToGL(attachment);
}
if (count)
glDrawBuffers(count, enables);
else
glDrawBuffer(GL_NONE);
#if WENDY_DEBUG
checkGL("Error when applying image framebuffer");
#endif
}
inline Point locationInGLFromTouch(Touch& touch)
{
auto director = Director::getInstance();
return director->convertToGL(touch.getLocationInView());
}