kgl - glColor4f Alpha

[ZMaster]

Hi.

I ran into a problem concerning the OpenGL (like) implementation of KallistiOS. When I try to make a quad transparent I do use switch to the transparency list with a call to glKosFinishList and set an appropriate blending function with glBlendFunc. Then I just draw the polygon with a preceding call to glColor4f(1.0f, 1.0f, 1.0f, 0.25f) for example. However, the alpha value doesn't seem to have any impact on the result. The drawn quad has actually some transparency applied to it, but it's the same degree of translucency with an alpha of 0.25f or 0.75f or any other value.
I'm actually experienced with the OpenGL implementation on PCs and I'm pretty confident that my approach should work. However, it might be that I'm missing something here or that there are some quirks with the KOS implementation in this particular case.
I need the variable alpha value for fading out animations...

Here's some code:

(Drawing function in main.cpp)


/* Draw the opaque GL "scene" */
glKosBeginFrame();
glDepthMask(1);

//Reset the modelview matrix to the identity matrix
glLoadIdentity();
//Drawing color
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);

GameStateManager::Instance()->DrawOpaque();
//Draw the opaque animations
AnimationManager::Instance()->DrawOpaque();

/* Draw the translucent GL "scene" */
glKosFinishList();
glDepthMask(0);

GameStateManager::Instance()->DrawTranslucent();
//Draw the translucent animations
AnimationManager::Instance()->DrawTranslucent();

glKosFinishFrame();


(Drawing function in animation.cpp - fFade ranges from 1.0f to 0.0f and is evaluated on time)


void AnimationDestroy::DrawTranslucent(void)
{
if(IsAtEnd())
return;

if(texAnim)
texAnim->Bind();

glPushMatrix();
glLoadIdentity();

glTranslatef(x, y, ANIMATION_Z);
glScalef(fScale, fScale, fScale);
glRotatef(fRot, 0.0f, 0.0f, 1.0f);

glColor4f(r, g, b, fFade);

glBegin(GL_QUADS);
glTexCoord2f(0.0f, 0.0f); glVertex3f(-0.5f, -0.5f, 0.0f);
glTexCoord2f(1.0f, 0.0f); glVertex3f( 0.5f, -0.5f, 0.0f);
glTexCoord2f(1.0f, 1.0f); glVertex3f( 0.5f, 0.5f, 0.0f);
glTexCoord2f(0.0f, 1.0f); glVertex3f(-0.5f, 0.5f, 0.0f);
glEnd();

glPopMatrix();
}


Thanks!
ZMaster