Jonathas Costa c4781b01de Feature/new stars rendering (#784) ...

* Physically-based star rendering.
 * New Tully Pic Galaxies speck file w/o Milky Way
 * Removed PSC from stars rendering.
 * Avoiding extra calculations during shading.
 * Removed bug in billboard maximum size code.
 * New method to get the current viewport resolution. Used e.g. when rendering stereo side-by-side configuration.
 * Same as stereo stars.
 * Improved configuration.
 * Stars camera orientation.
 * Separated changes in billboards.
 * Adde min size control.
 * Setting minimum size.
 * Changed eye position. Changed data array nome inside shaders to a more accurate representation of the data.
 * Billboards reflecting actual stars sizes.
 * Scaling stars size based on luminosity, Abs Mag and size.
 * Rendering to a texture instead of fragment calculation for each star.
 * Added default parameters, new configurations and updated parameters.
 * Updated speck file handling to reflect a more general specification.
 * Added apparent magnitude from the speck files.
 * Set correct star values values for Apogee and Galah
 * Changed position from vec4 to vec3 to save GPU memory.

2019-05-17 01:16:17 +02:00

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