public RenderTextureIssue937()
{
/*
* 1 2
* A: A1 A2
*
* B: B1 B2
*
* A1: premulti sprite
* A2: premulti render
*
* B1: non-premulti sprite
* B2: non-premulti render
*/
CCLayerColor background = CCLayerColor.layerWithColor(new ccColor4B(200, 200, 200, 255));
addChild(background);
CCSprite spr_premulti = CCSprite.spriteWithFile("Images/fire.png");
spr_premulti.position = new CCPoint(16, 48);
CCSprite spr_nonpremulti = CCSprite.spriteWithFile("Images/fire.png");
spr_nonpremulti.position = new CCPoint(16, 16);
/* A2 & B2 setup */
CCRenderTexture rend = CCRenderTexture.renderTextureWithWidthAndHeight(32, 64);
if (null == rend)
{
return;
}
// It's possible to modify the RenderTexture blending function by
// [[rend sprite] setBlendFunc:(ccBlendFunc) {GL_ONE, GL_ONE_MINUS_SRC_ALPHA}];
rend.begin();
spr_premulti.visit();
spr_nonpremulti.visit();
rend.end();
CCSize s = CCDirector.sharedDirector().getWinSize();
/* A1: setup */
spr_premulti.position = new CCPoint(s.width / 2 - 16, s.height / 2 + 16);
/* B1: setup */
spr_nonpremulti.position = new CCPoint(s.width / 2 - 16, s.height / 2 - 16);
rend.position = new CCPoint(s.width / 2 + 16, s.height / 2);
addChild(spr_nonpremulti);
addChild(spr_premulti);
addChild(rend);
}
public RenderTextureTest()
{
//if (CCConfiguration.sharedConfiguration().getGlesVersion() <= GLES_VER_1_0)
//{
// CCMessageBox("The Opengl ES version is lower than 1.1, and the test may not run correctly.", "Cocos2d-x Hint");
// return;
//}
CCSize s = CCDirector.sharedDirector().getWinSize();
// create a render texture, this is what we're going to draw into
m_target = CCRenderTexture.renderTextureWithWidthAndHeight((int)s.width, (int)s.height);
if (null == m_target)
{
return;
}
m_target.position = new CCPoint(s.width / 2, s.height / 2);
// note that the render texture is a cocosnode, and contains a sprite of it's texture for convience,
// so we can just parent it to the scene like any other cocos node
addChild(m_target, 1);
// create a brush image to draw into the texture with
m_brush = CCSprite.spriteWithFile("Images/stars.png");
//m_brush.retain();
ccBlendFunc bf = new ccBlendFunc {
src = 1, dst = 0x0303
};
m_brush.BlendFunc = bf;
m_brush.Opacity = 20;
isTouchEnabled = true;
}
