Miguel Pozo 9d436aa31d Fix #147782: Workbench alpha imprecision ...

Regression from 1c41815c4d.

The log2/exp2 round-trip can cause imprecisions, which are especially
notable with the alpha channel.
This removes the round-trip conversion for the alpha channel.

Pull Request: https://projects.blender.org/blender/blender/pulls/148218

2025-10-16 20:50:20 +02:00

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Fix #147782: Workbench alpha imprecision

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Fix #147782: Workbench alpha imprecision

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Fix #147782: Workbench alpha imprecision

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Fix #147782: Workbench alpha imprecision

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Fix #147782: Workbench alpha imprecision

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Fix #147782: Workbench alpha imprecision

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Fix #147782: Workbench alpha imprecision

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musgrave_hetero_terrain_36.png

Fix #147782: Workbench alpha imprecision

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musgrave_hybrid_multifractal_36.png

Fix #147782: Workbench alpha imprecision

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musgrave_multifractal_36.png

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musgrave_ridged_multifractal_36.png

Fix #147782: Workbench alpha imprecision

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Fix #147782: Workbench alpha imprecision

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noise.png

Fix #147782: Workbench alpha imprecision

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sky_hosek_wilkie.png

Revert "Shaders: Remove old Preetham and Hosek sky texture models"

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sky_multiple_decreased_disc_increased_air_aerosols.png

Render: Add Multiple Scattering Sky Texture

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sky_multiple_default.png

Render: Add Multiple Scattering Sky Texture

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sky_multiple_increased_disc_ozone.png

Render: Add Multiple Scattering Sky Texture

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sky_multiple_no_disc_high_altitude.png

Render: Add Multiple Scattering Sky Texture

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sky_preetham.png

Revert "Shaders: Remove old Preetham and Hosek sky texture models"

2025-09-20 16:52:23 +02:00

sky_single_decreased_disc_increased_air_aerosols.png

Render: Add Multiple Scattering Sky Texture

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sky_single_default.png

Render: Add Multiple Scattering Sky Texture

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sky_single_increased_disc_ozone.png

Render: Add Multiple Scattering Sky Texture

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sky_single_no_disc_high_altitude.png

Render: Add Multiple Scattering Sky Texture

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voronoi_distace_to_edge_fractal.png

Fix #147782: Workbench alpha imprecision

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voronoi_distace_to_edge.png

Fix #147782: Workbench alpha imprecision

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voronoi_f1_fractal.png

Fix #147782: Workbench alpha imprecision

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voronoi_f1.png

Fix #147782: Workbench alpha imprecision

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voronoi_f2_fractal.png

Fix #147782: Workbench alpha imprecision

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voronoi_f2.png

Fix #147782: Workbench alpha imprecision

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voronoi_n_sphere_radius.png

Fix #147782: Workbench alpha imprecision

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voronoi_smooth_f1_fractal.png

Fix #147782: Workbench alpha imprecision

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voronoi_smooth_f1.png

Fix #147782: Workbench alpha imprecision

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wave_bands_saw.png

Fix #147782: Workbench alpha imprecision

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wave_bands_sine.png

Fix #147782: Workbench alpha imprecision

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wave_bands_triangle.png

Fix #147782: Workbench alpha imprecision

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wave_rings_saw.png

Fix #147782: Workbench alpha imprecision

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wave_rings_sine.png

Fix #147782: Workbench alpha imprecision

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wave_rings_triangle.png

Fix #147782: Workbench alpha imprecision

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white_noise_1spp.png

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