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Code Issues Releases Wiki Activity

fresnel effect

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This commit is contained in:
scrawl 2012-04-05 12:59:56 +02:00
parent f6342cfd60
commit add4ebe445
3 changed files with 9 additions and 6 deletions
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1
files/gbuffer/gbuffer.compositor
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@ -11,6 +11,7 @@ compositor gbuffer
input none input none
pass clear pass clear
{ {
// make sure to set this to the viewport background color from outside
colour_value 0 0 0 1 colour_value 0 0 0 1
} }
pass render_scene pass render_scene

12
files/water/water.cg
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@ -64,7 +64,6 @@ void main_fp
float4 normal = tex2D(normalMap, uv1) + tex2D(normalMap, uv2) + tex2D(normalMap, uv3) + tex2D(normalMap, uv4); float4 normal = tex2D(normalMap, uv1) + tex2D(normalMap, uv2) + tex2D(normalMap, uv3) + tex2D(normalMap, uv4);
normal = normal / 4.f; normal = normal / 4.f;
normal = 2*normal - 1; normal = 2*normal - 1;
//normal = normalize(normal);
float2 screenCoords_reflect = screenCoords + normal.yx * 0.05; float2 screenCoords_reflect = screenCoords + normal.yx * 0.05;
float2 screenCoords_refract = screenCoords + normal.yx * 0.1 * depth1; float2 screenCoords_refract = screenCoords + normal.yx * 0.1 * depth1;
@ -72,11 +71,14 @@ void main_fp
float4 reflection = tex2D(reflectionMap, screenCoords_reflect); float4 reflection = tex2D(reflectionMap, screenCoords_reflect);
float4 refraction = tex2D(refractionMap, screenCoords_refract); float4 refraction = tex2D(refractionMap, screenCoords_refract);
// fresnel // tangent to object space
//float facing = 1.0 - max(abs(dot(iEyeVector.xyz, normal.xyz)), 0); normal.xyz = normal.xzy;
//float reflectionFactor = saturate(0.3 + 0.7 * pow(facing, 2));
oColor.xyz = lerp(refraction.xyz, reflection.xyz, depth1); // fresnel
float facing = 1.0 - max(abs(dot(normalize(iEyeVector.xyz), normal.xyz)), 0);
float reflectionFactor = saturate(0.3 + 0.7 * pow(facing, 2));
oColor.xyz = lerp(refraction.xyz, reflection.xyz, depth1 * reflectionFactor);
float fogValue = saturate((iDepth - fogParams.y) * fogParams.w); float fogValue = saturate((iDepth - fogParams.y) * fogParams.w);
oColor.xyz = lerp(oColor.xyz, fogColour, fogValue); oColor.xyz = lerp(oColor.xyz, fogColour, fogValue);

2
files/water/water.material
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@ -48,7 +48,7 @@ material Water
vertex_program_ref Water_VP vertex_program_ref Water_VP
{ {
//param_named_auto camPosObjSpace camera_position_object_space param_named_auto camPosObjSpace camera_position_object_space
} }
fragment_program_ref Water_FP fragment_program_ref Water_FP
{ {