diff options
author | Colin Basnett <cmbasnett@gmail.com> | 2022-09-17 03:50:37 +0300 |
---|---|---|
committer | Colin Basnett <cmbasnett@gmail.com> | 2022-09-17 03:50:37 +0300 |
commit | 564bda241a973396da51d7c3ccd9efd97d51728a (patch) | |
tree | 4d9aa4cccd82e2e606b47774afa5e1015bf14768 /source/blender/gpu/shaders/compositor/library/gpu_shader_compositor_map_value.glsl | |
parent | 0fff238150d076576053c25b646f653d6e3b0edb (diff) | |
parent | 48d7ff68f0df209c77bbb081ab46fbc109fd825a (diff) |
Merge branch 'master' into feature-imformatfeature-imformat
Diffstat (limited to 'source/blender/gpu/shaders/compositor/library/gpu_shader_compositor_map_value.glsl')
-rw-r--r-- | source/blender/gpu/shaders/compositor/library/gpu_shader_compositor_map_value.glsl | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/source/blender/gpu/shaders/compositor/library/gpu_shader_compositor_map_value.glsl b/source/blender/gpu/shaders/compositor/library/gpu_shader_compositor_map_value.glsl new file mode 100644 index 00000000000..20874b4ef44 --- /dev/null +++ b/source/blender/gpu/shaders/compositor/library/gpu_shader_compositor_map_value.glsl @@ -0,0 +1,56 @@ +/* An arbitrary value determined by Blender. */ +#define BLENDER_ZMAX 10000.0 + +void node_composite_map_range(float value, + float from_min, + float from_max, + float to_min, + float to_max, + const float should_clamp, + out float result) +{ + if (abs(from_max - from_min) < 1e-6) { + result = 0.0; + } + else { + if (value >= -BLENDER_ZMAX && value <= BLENDER_ZMAX) { + result = (value - from_min) / (from_max - from_min); + result = to_min + result * (to_max - to_min); + } + else if (value > BLENDER_ZMAX) { + result = to_max; + } + else { + result = to_min; + } + + if (should_clamp != 0.0) { + if (to_max > to_min) { + result = clamp(result, to_min, to_max); + } + else { + result = clamp(result, to_max, to_min); + } + } + } +} + +void node_composite_map_value(float value, + float offset, + float size, + const float use_min, + float min, + const float use_max, + float max, + out float result) +{ + result = (value + offset) * size; + + if (use_min != 0.0 && result < min) { + result = min; + } + + if (use_max != 0.0 && result > max) { + result = max; + } +} |