diff options
| author | Jack Andersen <someemail@gmail.com> | 2016-03-13 04:00:12 +0300 |
|---|---|---|
| committer | Antony Riakiotakis <kalast@gmail.com> | 2016-03-13 04:05:36 +0300 |
| commit | 861616bf693b78b070ada6cbc6aa79eb807fdde8 (patch) | |
| tree | 4626f295c739ea7fa689e4f56d6877845eb9adf1 /source/blender/gpu/GPU_material.h | |
| parent | 989b0e472e74869be9f170e2dafbae76d6a4ce94 (diff) | |
Full Inverse-Quadratic-Equation Lamp Falloff
This patch adds a new `falloff_type` ('Inverse Coefficients') for Lamps in
Blender-Internal and GLSL.
The current falloff modes use a formula like this inverse-square one:
`I = E × (D^2 / (D^2 + Q × r^2))`
While such a formula is simple for 3D-artists to use, it's algebraically
cumbersome to work with. Game-designers authoring their own shaders
could benefit much more by having direct control of falloff-coefficients:
`I = E × (1.0 / (coefC + coefL × r + coefQ × r^2))`
In this mode, the `distance` parameter is unused (except for 'Sphere'
mode); instead relying on the designer to mathematically-model the
falloff-behavior.
The UI has been patched like so:
{F153843}
Reviewers: brecht, psy-fi
Reviewed By: psy-fi
Subscribers: brita_, antidote, campbellbarton, psy-fi
Differential Revision: https://developer.blender.org/D1194
Diffstat (limited to 'source/blender/gpu/GPU_material.h')
| -rw-r--r-- | source/blender/gpu/GPU_material.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/source/blender/gpu/GPU_material.h b/source/blender/gpu/GPU_material.h index 3bcc7e23f06..f150b7215e1 100644 --- a/source/blender/gpu/GPU_material.h +++ b/source/blender/gpu/GPU_material.h @@ -166,6 +166,9 @@ typedef enum GPUDynamicType { GPU_DYNAMIC_LAMP_SPOTSIZE = 10 | GPU_DYNAMIC_GROUP_LAMP, GPU_DYNAMIC_LAMP_SPOTBLEND = 11 | GPU_DYNAMIC_GROUP_LAMP, GPU_DYNAMIC_LAMP_SPOTSCALE = 12 | GPU_DYNAMIC_GROUP_LAMP, + GPU_DYNAMIC_LAMP_COEFFCONST = 13 | GPU_DYNAMIC_GROUP_LAMP, + GPU_DYNAMIC_LAMP_COEFFLIN = 14 | GPU_DYNAMIC_GROUP_LAMP, + GPU_DYNAMIC_LAMP_COEFFQUAD = 15 | GPU_DYNAMIC_GROUP_LAMP, GPU_DYNAMIC_SAMPLER_2DBUFFER = 1 | GPU_DYNAMIC_GROUP_SAMPLER, GPU_DYNAMIC_SAMPLER_2DIMAGE = 2 | GPU_DYNAMIC_GROUP_SAMPLER, @@ -318,7 +321,8 @@ float *GPU_lamp_dynpersmat(GPULamp *lamp); void GPU_lamp_update(GPULamp *lamp, int lay, int hide, float obmat[4][4]); void GPU_lamp_update_colors(GPULamp *lamp, float r, float g, float b, float energy); -void GPU_lamp_update_distance(GPULamp *lamp, float distance, float att1, float att2); +void GPU_lamp_update_distance(GPULamp *lamp, float distance, float att1, float att2, + float coeff_const, float coeff_lin, float coeff_quad); void GPU_lamp_update_spot(GPULamp *lamp, float spotsize, float spotblend); int GPU_lamp_shadow_layer(GPULamp *lamp); GPUNodeLink *GPU_lamp_get_data( |