Shadow Map too big

Asked Apr 30 '13 at 22:16

Active May 01 '13 at 01:12

Viewed 168 times

All is OK in the shader map texture, but the is scaled (too big).

The coord texture:

mat4 bias = mat4(0.5, 0.0, 0.0, 0.0, 0.0, 0.5, 0.0, 0.0, 0.0, 0.0, 0.5, 0.0, 0.5, 0.5, 0.5, 1.0);

ShadowCoord = bias * projMatrix * viewModelMatrix * vec4(position,1);

Why in another example the textureMap coord is:

ShadowCoord = bias * projMatrix * viewModelMatrix * ViewMatrixInverse;

And another:

ShadowCoord = bias * projMatrix * viewModelMatrix * ModelMatrixRenderObject * vec4(position,1);

Does anyone can explain the differences? and Why do my Texture Map is scaled?

edited May 01 '13 at 01:12

Nicol Bolas

asked Apr 30 '13 at 22:16

1

We can only guess at what those matrices mean to the examples that use them. Not without actually seeing those examples. – Nicol Bolas May 01 '13 at 01:14
Shouldn't you be multiplying the shadow coord by the view matrix for the light source? – fluffels May 02 '13 at 07:26
Also, are you doing the perspective division in the fragment shader? Everything else looks fine. – fluffels May 02 '13 at 07:26

0 Answers0