diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gles3/shaders/scene.glsl | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/drivers/gles3/shaders/scene.glsl b/drivers/gles3/shaders/scene.glsl index 73268c1914..5f83033293 100644 --- a/drivers/gles3/shaders/scene.glsl +++ b/drivers/gles3/shaders/scene.glsl @@ -935,17 +935,26 @@ LIGHT_SHADER_CODE #elif defined(DIFFUSE_BURLEY) { - float NdotL = dot(L, N); - float NdotV = dot(N, V); - float VdotH = dot(N, normalize(L+V)); + + + vec3 H = normalize(V + L); + float NoL = max(0.0,dot(N, L)); + float VoH = max(0.0,dot(L, H)); + float NoV = max(0.0,dot(N, V)); + + float FD90 = 0.5 + 2.0 * VoH * VoH * roughness; + float FdV = 1.0 + (FD90 - 1.0) * pow( 1.0 - NoV, 5.0 ); + float FdL = 1.0 + (FD90 - 1.0) * pow( 1.0 - NoL, 5.0 ); + light_amount = ( (1.0 / M_PI) * FdV * FdL ); +/* float energyBias = mix(roughness, 0.0, 0.5); float energyFactor = mix(roughness, 1.0, 1.0 / 1.51); - float fd90 = energyBias + 2.0 * VdotH * VdotH * roughness; + float fd90 = energyBias + 2.0 * VoH * VoH * roughness; float f0 = 1.0; - float lightScatter = f0 + (fd90 - f0) * pow(1.0 - NdotL, 5.0); - float viewScatter = f0 + (fd90 - f0) * pow(1.0 - NdotV, 5.0); + float lightScatter = f0 + (fd90 - f0) * pow(1.0 - NoL, 5.0); + float viewScatter = f0 + (fd90 - f0) * pow(1.0 - NoV, 5.0); - light_amount = lightScatter * viewScatter * energyFactor; + light_amount = lightScatter * viewScatter * energyFactor;*/ } #else //lambert |