Clean up gamma scale #3797
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Clean up gamma scale #3797
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`gl_Position.w - 0.5` is replaced with `gl_Position.w / tan(fov)` The `/ tan(fov)` is handled by multiplying `1 / tan(fov)` into `u_gamma` outside the shader. I think `- 0.5` was just chosen as something that looked right for the default fov.
Project the extrusion and compare it's projected pixel length with the actual pixel length and adjust antialiasing accordingly. The previous approach calculated the adjustment much more indirectly and had no intuitive explanation.
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merged as part of #3790 |
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Continued from mapbox/mapbox-gl-shaders#41
cc @ansis