void CCRenderTexture::begin()
{
// Save the current matrix
glPushMatrix();
const CCSize& texSize = m_pTexture->getContentSizeInPixels();
// Calculate the adjustment ratios based on the old and new projections
CCSize size = CCDirector::sharedDirector()->getDisplaySizeInPixels();
float widthRatio = size.width / texSize.width;
float heightRatio = size.height / texSize.height;
// Adjust the orthographic propjection and viewport
ccglOrtho((float)-1.0 / widthRatio, (float)1.0 / widthRatio, (float)-1.0 / heightRatio, (float)1.0 / heightRatio, -1,1);
glViewport(0, 0, (GLsizei)texSize.width, (GLsizei)texSize.height);
// CCDirector::sharedDirector()->getOpenGLView()->setViewPortInPoints(0, 0, texSize.width, texSize.height);
glGetIntegerv(CC_GL_FRAMEBUFFER_BINDING, &m_nOldFBO);
ccglBindFramebuffer(CC_GL_FRAMEBUFFER, m_uFBO);//Will direct drawing to the frame buffer created above
// Issue #1145
// There is no need to enable the default GL states here
// but since CCRenderTexture is mostly used outside the "render" loop
// these states needs to be enabled.
// Since this bug was discovered in API-freeze (very close of 1.0 release)
// This bug won't be fixed to prevent incompatibilities with code.
//
// If you understand the above mentioned message, then you can comment the following line
// and enable the gl states manually, in case you need them.
CC_ENABLE_DEFAULT_GL_STATES();
}
void CCRenderTexture::beginWithClear(float r, float g, float b, float a)
{
this->saveGLstate();
CC_DISABLE_DEFAULT_GL_STATES();
// Save the current matrix
glPushMatrix();
CCSize texSize = m_pTexture->getContentSizeInPixels();
// Calculate the adjustment ratios based on the old and new projections
CCSize size = CCDirector::sharedDirector()->getDisplaySizeInPixels();
float widthRatio = size.width / texSize.width;
float heightRatio = size.height / texSize.height;
// Adjust the orthographic propjection and viewport
ccglOrtho((float)-1.0 / widthRatio, (float)1.0 / widthRatio, (float)-1.0 / heightRatio, (float)1.0 / heightRatio, -1,1);
glViewport(0, 0, (GLsizei)texSize.width, (GLsizei)texSize.height);
glGetIntegerv(CC_GL_FRAMEBUFFER_BINDING, &m_nOldFBO);
ccglBindFramebuffer(CC_GL_FRAMEBUFFER, m_uFBO);//Will direct drawing to the frame buffer created above
glClearColor(r, g, b, a);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
CC_ENABLE_DEFAULT_GL_STATES();
}
void CCDirector::setProjection(ccDirectorProjection kProjection)
{
CCSize size = m_obWinSizeInPixels;
float zeye = this->getZEye();
switch (kProjection)
{
case kCCDirectorProjection2D:
if (m_pobOpenGLView)
{
m_pobOpenGLView->setViewPortInPoints(0, 0, size.width, size.height);
}
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
ccglOrtho(0, size.width, 0, size.height, -1024 * CC_CONTENT_SCALE_FACTOR(),
1024 * CC_CONTENT_SCALE_FACTOR());
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
break;
case kCCDirectorProjection3D:
if (m_pobOpenGLView)
{
m_pobOpenGLView->setViewPortInPoints(0, 0, size.width, size.height);
}
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
// accommodate iPad retina while keep backward compatibility
if (m_pobOpenGLView && m_pobOpenGLView->isIpad() && m_pobOpenGLView->getMainScreenScale() > 1.0)
{
gluPerspective(60, (GLfloat)size.width/size.height, zeye-size.height/2, zeye+size.height/2);
}
else
{
gluPerspective(60, (GLfloat)size.width/size.height, 0.5f, 1500.0f);
}
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt( size.width/2, size.height/2, zeye,
size.width/2, size.height/2, 0,
0.0f, 1.0f, 0.0f);
break;
case kCCDirectorProjectionCustom:
if (m_pProjectionDelegate)
{
m_pProjectionDelegate->updateProjection();
}
break;
default:
CCLOG("cocos2d: Director: unrecognized projecgtion");
break;
}
m_eProjection = kProjection;
}
void CCGridBase::set2DProjection()
{
CGSize winSize = CCDirector::sharedDirector()->getWinSizeInPixels();
glLoadIdentity();
glViewport((GLsizei)0, (GLsizei)0, (GLsizei)winSize.width, (GLsizei)winSize.height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
ccglOrtho(0, winSize.width, 0, winSize.height, -1024, 1024);
glMatrixMode(GL_MODELVIEW);
}
void CCDirector::setProjection(ccDirectorProjection kProjection)
{
CCSize size = m_obWinSizeInPixels;
switch (kProjection)
{
case kCCDirectorProjection2D:
// glViewport((GLsizei)0, (GLsizei)0, (GLsizei)size.width, (GLsizei)size.height);
CCDirector::sharedDirector()->getOpenGLView()->setViewPortInPoints(0, 0, size.width, size.height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
ccglOrtho(0, size.width, 0, size.height, -1024 * CC_CONTENT_SCALE_FACTOR(),
1024 * CC_CONTENT_SCALE_FACTOR());
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
break;
case kCCDirectorProjection3D:
// glViewport(0, 0, (GLsizei)size.width, (GLsizei)size.height);
CCDirector::sharedDirector()->getOpenGLView()->setViewPortInPoints(0, 0, size.width, size.height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(60, (GLfloat)size.width/size.height, 0.5f, 1500.0f);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt( size.width/2, size.height/2, getZEye(),
size.width/2, size.height/2, 0,
0.0f, 1.0f, 0.0f);
break;
case kCCDirectorProjectionCustom:
if (m_pProjectionDelegate)
{
m_pProjectionDelegate->updateProjection();
}
break;
default:
CCLOG("cocos2d: Director: unrecognized projecgtion");
break;
}
m_eProjection = kProjection;
}