Maybe should I be more specific about how it works ?

There are 2 maps of the same dimensions :

• a depth map, like in standard shadow mapping
• a color map, that stores the filtering colors

Generation of the shadow map :

• the color map is filled with (1,1,1)
• the opaque geometry is rendered on the depth map only
• the transparent geometry is alpha-blended on the color map, reading the depth map.

Scene rendering with colored shadows :

The point is shadowed (depth test) ?

• Yes, return (0,0,0)
• No, sampling of the color map.

This filter is then multiplied by the light color, to get the filtered light color that can be used in lighting calculations afterwards


NB :
Since this shadow map stores the depth and the color filter of a light ray reaching an opaque geometry, it can be used on opaque geometry only.
I still use standard shadow mapping on transparent geometry, just taking into account the depth data of this shadow map.


Thank you so much for the help I got


[attachment=11421:alwaysbetterthanblabla.PNG]

Maybe should I be more specific about how it works ?

There are 2 maps of the same dimensions :

• a depth map, like in standard shadow mapping
• a color map, that stores the filtering colors

Generation of the shadow map :

• the color map is filled with (1,1,1)
• the opaque geometry is rendered on the depth map only
• the transparent geometry is alpha-blended on the color map, reading the depth map.

Scene rendering with colored shadows :

The point is shadowed (depth test) ?

• Yes, return (0,0,0)
• No, sampling of the color map.

This filter is then multiplied by the light color, to get the filtered light color that can be used in lighting calculations afterwards


NB :
Since this shadow map stores the depth and the color filter of a light ray reaching an opaque geometry, it can be used on opaque geometry only.
I still use standard shadow mapping on transparent geometry, just taking into account the depth data of this shadow map.


Thank you so much for the help I got

Maybe should I be more specific about how it works ?

There are 2 maps of the same dimensions :

• a depth map, like in standard shadow mapping
• a color map, that stores the filtering colors

Generation of the shadow map :

• the color map is filled with (1,1,1)
• the opaque geometry is rendered on the depth map only
• the transparent geometry is alpha-blended on the color map, reading the depth map.

Scene rendering with colored shadows :

The point is shadowed (depth test) ?

• Yes, return (0,0,0)
• No, sampling of the color map.

This filter is then multiplied by the light color, to get the filtered light color that can be used in lighting calculations afterwards


NB :
Since this shadow map stores the depth and the color filter of a light ray reaching an opaque geometry, it can be used on opaque geometry only.
I still use standard shadow mapping on transparent geometry, just taking into account the depth data of this shadow map.

Maybe should I be more specific about how it works ?

There are 2 maps of the same dimensions :

• a depth map, like in standard shadow mapping
• a color map, that stores the filtering colors

Generation of the shadow map :

• the color map is filled with (1,1,1)
• the opaque geometry is rendered on the depth map only
• the transparent geometry is alpha-blended on the color map, reading the depth map.

Scene rendering with colored shadows :

The point is shadowed (depth test) ?

• Yes, return (0,0,0)
• No, sampling of the color map.

This filter is then multiplied by the light color, to get the filtered light color that can be used in lighting calculations afterwards

Maybe should I be more specific about how it works ?

There are 2 maps of the same dimensions :

• a depth map, like in standard shadow mapping
• a color map, that stores the filtering colors

Generation of the shadow map :

• the color map is filled with (1,1,1)
• the opaque geometry is rendered on the depth map only
• the transparent geometry is alpha-blended on the color map, reading the depth map

Scene rendering with colored shadows :

The point is shadowed (depth test) ?

• Yes, return (0,0,0)
• No, sampling of the color map.

This filter is then multiplied by the light color, to get the filtered light color that can be used in lighting calculations afterwards

Maybe should I be more specific about how it works ?

There are 2 maps of the same dimensions :

• a depth map, like in standard shadow mapping
• a color map, that stores the filtering colors

Generation of the shadow map :

• the color map is filled with (1,1,1)
• the opaque geometry is rendered on the depth map only
• the transparent geometry is alpha-blended on the color map only

Scene rendering with colored shadows :

The point is shadowed (depth test) ?

• Yes, return (0,0,0)
• No, sampling of the color map.

This filter is then multiplied by the light color, to get the filtered light color that can be used in lighting calculations afterwards