GLSL - cube shadows - projecting

Hello again !


Let me start from the fact I've tried searching for almost 5 days now to find a solution how to project the shadow map by using a CubeShadow in the shaders, and guess what - couldn't find anything.. really.


Here's the deal - i am trying to implement a omnidirectional shadowmap with cubemaps.




i generate a Cube texture 512x512:






glGenTextures(1, &tDepthCubeMap);
glBindTexture(GL_TEXTURE_CUBE_MAP, tDepthCubeMap);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameterf( GL_TEXTURE_CUBE_MAP, GL_TEXTURE_COMPARE_MODE, GL_COMPARE_R_TO_TEXTURE );
glTexParameterf( GL_TEXTURE_CUBE_MAP, GL_TEXTURE_COMPARE_FUNC, GL_LEQUAL);

for (int face = 0; face < 6; face++)
glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + face, 0, GL_DEPTH_COMPONENT32F , 512, 512, 0, GL_DEPTH_COMPONENT, GL_FLOAT, NULL);




And bind it to my Framebuffer with GL_DEPTH_ATTACHMENT.





I render from light position to all 6 faces of Cube starting GL_TEXTURE_CUBE_MAP_POSITIVE_X and iterating 6 times.


Of course i :







glDrawBuffer(GL_NONE);
glReadBuffer(GL_NONE);



//

Switch fov to 90

gluPerspective(90, 512/512,1,200);






And render the geometry, results stored in cube depth map:




EDITOR SHOT, SO YOU CAN SEE THE LIGHT POSITION




NORMAL RENDERING WITHOUT SHADOWS APPLIED






GDEBUGGER - SHOWING CONTENTS OF CUBE TEXTURE






Now, time to 'project' that as a shadow in the shader..

I pass my cube texture to the fragment shader with:




uniform samplerCubeShadow shadowMap;




How do i project that as a shadowmap in the shader?




Can i ask you please to help me out with that?
i couldn't find anything related to samplerCubeShadow on the net...