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Merge pull request #1152 from AbigailBuccaneer/consistent-shadow-antialiasing 

Improve shadow quality and performance in gl33
1008-fix
krzys_h 2018-05-07 20:53:21 +02:00 committed by GitHub
parent 50ed675acd 0d6fffd91f
commit a54f65f71b
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 7 additions and 11 deletions
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18
src/graphics/opengl/shaders/gl33/fs_normal.glsl
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@ -96,19 +96,15 @@ void main()
if (uni_ShadowTextureEnabled)
{
float value = texture(uni_ShadowTexture, data.ShadowCoord.xyz);
#ifdef CONFIG_QUALITY_SHADOWS
float offset = 0.00025f;
float value = (1.0f / 5.0f) * (texture(uni_ShadowTexture, data.ShadowCoord.xyz)
+ texture(uni_ShadowTexture, data.ShadowCoord.xyz + vec3( offset, 0.0f, 0.0f))
+ texture(uni_ShadowTexture, data.ShadowCoord.xyz + vec3(-offset, 0.0f, 0.0f))
+ texture(uni_ShadowTexture, data.ShadowCoord.xyz + vec3( 0.0f, offset, 0.0f))
+ texture(uni_ShadowTexture, data.ShadowCoord.xyz + vec3( 0.0f, -offset, 0.0f)));
shadow = mix(uni_ShadowColor, 1.0f, value);
#else
shadow = mix(uni_ShadowColor, 1.0f, texture(uni_ShadowTexture, data.ShadowCoord.xyz));
value += textureOffset(uni_ShadowTexture, data.ShadowCoord.xyz, ivec2( 1, 0))
+ textureOffset(uni_ShadowTexture, data.ShadowCoord.xyz, ivec2(-1, 0))
+ textureOffset(uni_ShadowTexture, data.ShadowCoord.xyz, ivec2( 0, 1))
+ textureOffset(uni_ShadowTexture, data.ShadowCoord.xyz, ivec2( 0,-1));
value = value * (1.0f / 5.0f);
#endif
shadow = mix(uni_ShadowColor, 1.0f, value);
}
vec4 result = uni_AmbientColor * ambient