virtualx-engine/modules/lightmapper_rd/lm_common_inc.glsl
Dario a9a197d2dc Rewrite the GPU Lightmapper's indirect lighting logic to match Godot 3.5's CPU Lightmapper.
Port over the logic from Godot 3.5 for indirect lighting. This should fix many issues about indirect bounces causing more energy and improve the overall quality of the result.
2023-10-13 14:33:55 -03:00

109 lines
1.9 KiB
GLSL

/* SET 0, static data that does not change between any call */
layout(set = 0, binding = 0) uniform BakeParameters {
vec3 world_size;
float bias;
vec3 to_cell_offset;
int grid_size;
vec3 to_cell_size;
uint light_count;
mat3x4 env_transform;
ivec2 atlas_size;
float exposure_normalization;
uint bounces;
float bounce_indirect_energy;
}
bake_params;
struct Vertex {
vec3 position;
float normal_z;
vec2 uv;
vec2 normal_xy;
};
layout(set = 0, binding = 1, std430) restrict readonly buffer Vertices {
Vertex data[];
}
vertices;
struct Triangle {
uvec3 indices;
uint slice;
vec3 min_bounds;
uint pad0;
vec3 max_bounds;
uint pad1;
};
layout(set = 0, binding = 2, std430) restrict readonly buffer Triangles {
Triangle data[];
}
triangles;
layout(set = 0, binding = 3, std430) restrict readonly buffer GridIndices {
uint data[];
}
grid_indices;
#define LIGHT_TYPE_DIRECTIONAL 0
#define LIGHT_TYPE_OMNI 1
#define LIGHT_TYPE_SPOT 2
struct Light {
vec3 position;
uint type;
vec3 direction;
float energy;
vec3 color;
float size;
float range;
float attenuation;
float cos_spot_angle;
float inv_spot_attenuation;
float indirect_energy;
float shadow_blur;
bool static_bake;
uint pad;
};
layout(set = 0, binding = 4, std430) restrict readonly buffer Lights {
Light data[];
}
lights;
struct Seam {
uvec2 a;
uvec2 b;
};
layout(set = 0, binding = 5, std430) restrict readonly buffer Seams {
Seam data[];
}
seams;
layout(set = 0, binding = 6, std430) restrict readonly buffer Probes {
vec4 data[];
}
probe_positions;
layout(set = 0, binding = 7) uniform utexture3D grid;
layout(set = 0, binding = 8) uniform texture2DArray albedo_tex;
layout(set = 0, binding = 9) uniform texture2DArray emission_tex;
layout(set = 0, binding = 10) uniform sampler linear_sampler;
// Fragment action constants
const uint FA_NONE = 0;
const uint FA_SMOOTHEN_POSITION = 1;