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| author | mookiexl <mookiexl@gmail.com> | 2016-10-03 12:28:32 +0200 |
|---|---|---|
| committer | Rémi Verschelde <remi@verschelde.fr> | 2016-10-03 12:28:32 +0200 |
| commit | 0b12ebba1143888ee76302c33bbf67508717f42f (patch) | |
| tree | 41fa1fd520ea71f73087d3ec066e368dbfe0505f /drivers/gles2/shaders/material.glsl | |
| parent | 1d2743302f8e118011e5fe51fbc7bf310acb30d4 (diff) | |
Limit directional shadow draw distance, fixes #559, optimization (#1991)
* Shadow fadeout exponent hardcoded for now, should be user configurable.
* optimization - skip shadows outside visible range
Diffstat (limited to 'drivers/gles2/shaders/material.glsl')
| -rw-r--r-- | drivers/gles2/shaders/material.glsl | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gles2/shaders/material.glsl b/drivers/gles2/shaders/material.glsl index 477a451f2f..e5be25757d 100644 --- a/drivers/gles2/shaders/material.glsl +++ b/drivers/gles2/shaders/material.glsl @@ -980,6 +980,12 @@ FRAGMENT_SHADER_CODE #ifdef LIGHT_USE_SHADOW #ifdef LIGHT_TYPE_DIRECTIONAL + float shadow_fade_exponent=5.0; //hardcoded for now + float shadow_fade=pow(length(vertex_interp)/light_attenuation.g,shadow_fade_exponent); + +// optimization - skip shadows outside visible range + if(shadow_fade<1.0){ + #ifdef LIGHT_USE_PSSM @@ -1105,6 +1111,12 @@ FRAGMENT_SHADER_CODE shadow_attenuation=SAMPLE_SHADOW_TEX(shadow_coord.xy,shadow_coord.z); #endif + + shadow_attenuation=mix(shadow_attenuation,1.0,shadow_fade); + }else{ + shadow_attenuation=1.0; + }; + #endif #ifdef LIGHT_TYPE_OMNI |