public void setBlendMode(int mode) {
oldBlendMode = blendMode;
blendMode = mode;
GL14.glBlendEquation(GL14.GL_FUNC_ADD);
if (mode < 100) {
g.setDrawMode(mode);
return;
}
try {
Reflection.invokePrivateMethod(mPredraw, g);
} catch (Exception e) {
App.getApp().handle(e);
}
gl.glEnable(SGL.GL_BLEND);
gl.glColorMask(true, true, true, true);
if (mode == BM_ADD || mode == BM_SUBTRACT) {
gl.glBlendFunc(SGL.GL_SRC_ALPHA, SGL.GL_ONE);
if (mode == BM_SUBTRACT) {
GL14.glBlendEquation(GL14.GL_FUNC_SUBTRACT);
GL14.glBlendEquation(GL14.GL_FUNC_REVERSE_SUBTRACT);
}
}
try {
Reflection.invokePrivateMethod(mPostdraw, g);
} catch (Exception e) {
App.getApp().handle(e);
}
}
/**
* Render the particles in the system
*
* @param x The x coordinate to render the particle system at (in the current coordinate space)
* @param y The y coordinate to render the particle system at (in the current coordiante space)
*/
public void render(float x, float y) {
if ((sprite == null) && (defaultImageName != null)) {
loadSystemParticleImage();
}
if (!visible) {
return;
}
GL.glTranslatef(x, y, 0);
if (blendingMode == BLEND_ADDITIVE) {
GL.glBlendFunc(SGL.GL_SRC_ALPHA, SGL.GL_ONE);
}
if (usePoints()) {
GL.glEnable(SGL.GL_POINT_SMOOTH);
TextureImpl.bindNone();
}
// iterate over all emitters
for (int emitterIdx = 0; emitterIdx < emitters.size(); emitterIdx++) {
// get emitter
ParticleEmitter emitter = (ParticleEmitter) emitters.get(emitterIdx);
// check for additive override and enable when set
if (emitter.useAdditive()) {
GL.glBlendFunc(SGL.GL_SRC_ALPHA, SGL.GL_ONE);
}
// now get the particle pool for this emitter and render all particles that are in use
ParticlePool pool = (ParticlePool) particlesByEmitter.get(emitter);
Image image = emitter.getImage();
if (image == null) {
image = this.sprite;
}
if (!emitter.isOriented() && !emitter.usePoints(this)) {
image.startUse();
}
for (int i = 0; i < pool.particles.length; i++) {
if (pool.particles[i].inUse()) pool.particles[i].render();
}
if (!emitter.isOriented() && !emitter.usePoints(this)) {
image.endUse();
}
// reset additive blend mode
if (emitter.useAdditive()) {
GL.glBlendFunc(SGL.GL_SRC_ALPHA, SGL.GL_ONE_MINUS_SRC_ALPHA);
}
}
if (usePoints()) {
GL.glDisable(SGL.GL_POINT_SMOOTH);
}
if (blendingMode == BLEND_ADDITIVE) {
GL.glBlendFunc(SGL.GL_SRC_ALPHA, SGL.GL_ONE_MINUS_SRC_ALPHA);
}
Color.white.bind();
GL.glTranslatef(-x, -y, 0);
}
