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LightmapGI: Pack L1 SH coefficients for directional lightmaps

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BlueCube3310
2024-08-20 13:15:34 +02:00
parent 906a4e9db9
commit a89f4fa5a9
8 changed files with 115 additions and 29 deletions
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18
drivers/gles3/shaders/scene.glsl
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@ -1803,22 +1803,22 @@ void main() {
#ifdef LIGHTMAP_BICUBIC_FILTER
vec3 lm_light_l0 = textureArray_bicubic(lightmap_textures, uvw + vec3(0.0, 0.0, 0.0), lightmap_texture_size).rgb;
vec3 lm_light_l1n1 = textureArray_bicubic(lightmap_textures, uvw + vec3(0.0, 0.0, 1.0), lightmap_texture_size).rgb;
vec3 lm_light_l1_0 = textureArray_bicubic(lightmap_textures, uvw + vec3(0.0, 0.0, 2.0), lightmap_texture_size).rgb;
vec3 lm_light_l1p1 = textureArray_bicubic(lightmap_textures, uvw + vec3(0.0, 0.0, 3.0), lightmap_texture_size).rgb;
vec3 lm_light_l1n1 = (textureArray_bicubic(lightmap_textures, uvw + vec3(0.0, 0.0, 1.0), lightmap_texture_size).rgb - vec3(0.5)) * 2.0;
vec3 lm_light_l1_0 = (textureArray_bicubic(lightmap_textures, uvw + vec3(0.0, 0.0, 2.0), lightmap_texture_size).rgb - vec3(0.5)) * 2.0;
vec3 lm_light_l1p1 = (textureArray_bicubic(lightmap_textures, uvw + vec3(0.0, 0.0, 3.0), lightmap_texture_size).rgb - vec3(0.5)) * 2.0;
#else
vec3 lm_light_l0 = textureLod(lightmap_textures, uvw + vec3(0.0, 0.0, 0.0), 0.0).rgb;
vec3 lm_light_l1n1 = textureLod(lightmap_textures, uvw + vec3(0.0, 0.0, 1.0), 0.0).rgb;
vec3 lm_light_l1_0 = textureLod(lightmap_textures, uvw + vec3(0.0, 0.0, 2.0), 0.0).rgb;
vec3 lm_light_l1p1 = textureLod(lightmap_textures, uvw + vec3(0.0, 0.0, 3.0), 0.0).rgb;
vec3 lm_light_l1n1 = (textureLod(lightmap_textures, uvw + vec3(0.0, 0.0, 1.0), 0.0).rgb - vec3(0.5)) * 2.0;
vec3 lm_light_l1_0 = (textureLod(lightmap_textures, uvw + vec3(0.0, 0.0, 2.0), 0.0).rgb - vec3(0.5)) * 2.0;
vec3 lm_light_l1p1 = (textureLod(lightmap_textures, uvw + vec3(0.0, 0.0, 3.0), 0.0).rgb - vec3(0.5)) * 2.0;
#endif
vec3 n = normalize(lightmap_normal_xform * normal);
ambient_light += lm_light_l0 * lightmap_exposure_normalization;
ambient_light += lm_light_l1n1 * n.y * lightmap_exposure_normalization;
ambient_light += lm_light_l1_0 * n.z * lightmap_exposure_normalization;
ambient_light += lm_light_l1p1 * n.x * lightmap_exposure_normalization;
ambient_light += lm_light_l1n1 * n.y * (lm_light_l0 * lightmap_exposure_normalization * 4.0);
ambient_light += lm_light_l1_0 * n.z * (lm_light_l0 * lightmap_exposure_normalization * 4.0);
ambient_light += lm_light_l1p1 * n.x * (lm_light_l0 * lightmap_exposure_normalization * 4.0);
#else
#ifdef LIGHTMAP_BICUBIC_FILTER
ambient_light += textureArray_bicubic(lightmap_textures, uvw, lightmap_texture_size).rgb * lightmap_exposure_normalization;