void LightEffect::prepareForRender(Sprite *sprite, Texture2D *normalmap)
{
auto gl = getGLProgramState();
gl->setUniformVec2("u_contentSize", sprite->getContentSize());
Point posRelToSprite = PointApplyAffineTransform(Point(_lightPos.x, _lightPos.y), sprite->getWorldToNodeAffineTransform());
gl->setUniformVec3("u_lightPos", Vec3(posRelToSprite.x, posRelToSprite.y, _lightPos.z));
gl->setUniformTexture("u_normals", normalmap);
int opacity = sprite->getOpacity();
SpriteFrame *frame = sprite->getSpriteFrame();
Size untrimmedSize = frame->getOriginalSize();
Size trimmedSize = frame->getRect().size;
Vec2 framePos = frame->getRect().origin;
Size texSize = frame->getTexture()->getContentSize();
// set sprite position in sheet
gl->setUniformVec2("u_spritePosInSheet", Vec2(framePos.x / texSize.width, framePos.y / texSize.height));
gl->setUniformVec2("u_spriteSizeRelToSheet", Vec2(untrimmedSize.width / texSize.width, untrimmedSize.height / texSize.height));
gl->setUniformInt("u_spriteRotated", frame->isRotated());
gl->setUniformFloat("u_spriteOpacity", (float)opacity / 255.0f);
// set offset of trimmed sprite
Vec2 bottomLeft = frame->getOffset() + (untrimmedSize - trimmedSize) / 2;
Vec2 cornerOffset = frame->isRotated() ? Vec2(bottomLeft.y, bottomLeft.x)
: Vec2(bottomLeft.x, untrimmedSize.height - trimmedSize.height - bottomLeft.y);
gl->setUniformVec2("u_spriteOffset", cornerOffset);
}
void BlockBase::initShader() {
#if EDITOR_MODE == 0
auto shaderfile = FileUtils::getInstance()->fullPathForFilename("shaders/normal_vig.fsh");
// init shader
GLchar * fragSource = (GLchar*)String::createWithContentsOfFile(shaderfile.c_str())->getCString();
auto program = GLProgram::createWithByteArrays(ccPositionTextureColor_noMVP_vert, fragSource);
auto glProgramState = GLProgramState::getOrCreateWithGLProgram(program);
float screenWidth = VisibleRect::getFrameSize().width;
float screenHeight = VisibleRect::getFrameSize().height;
mSprite->setGLProgramState(glProgramState);
glProgramState->setUniformVec3("resolution", Vec3(screenWidth, screenHeight, 1.3));
#endif
}
