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Add z-bias for scenery objects with good values for preventing z-fighting of track ballast at switches.

git-svn-id: http://svn.uktrainsim.com/svn/openrails/trunk@193 a9f3cfff-6c41-7446-b0ca-052bd761e6eb

Eliminated shadow rendering on dark side of objects. ( so the side facing away from the sun doesn't get shadows )

Eliminated shadows from cruciform material ( ie to conceal geometry of billboard trees )

Eliminated shadows from dark shade material ( its already dark )

git-svn-id: http://svn.uktrainsim.com/svn/openrails/trunk@192 a9f3cfff-6c41-7446-b0ca-052bd761e6eb

Corrected alpha problem in pixel shaders where alpha was being 'grayed out' by fog.  Fixed by modifying code so fog lerp doesn't effect alpha in all relevant pixel shaders.

git-svn-id: http://svn.uktrainsim.com/svn/openrails/trunk@191 a9f3cfff-6c41-7446-b0ca-052bd761e6eb

Removed the specular lighting code from the SceneryShader - it appears to be wrong and was making the vertex shaders ugly. I'll be re-implementing it at some point.

git-svn-id: http://svn.uktrainsim.com/svn/openrails/trunk@190 a9f3cfff-6c41-7446-b0ca-052bd761e6eb

Fix badly compiled RunActivity.exe, oops.

git-svn-id: http://svn.uktrainsim.com/svn/openrails/trunk@189 a9f3cfff-6c41-7446-b0ca-052bd761e6eb

Replaced the ForestShader with a new technique in the SceneryShader.

Tidied up the vertex shader part of SceneryShader.

git-svn-id: http://svn.uktrainsim.com/svn/openrails/trunk@188 a9f3cfff-6c41-7446-b0ca-052bd761e6eb

Fixed REF00069 - animated parts disappear

Skip loading sound engine at Sound Detail Level 0 to aid in troubleshooting.

git-svn-id: http://svn.uktrainsim.com/svn/openrails/trunk@187 a9f3cfff-6c41-7446-b0ca-052bd761e6eb

add missing ShadowMap.xnb

git-svn-id: http://svn.uktrainsim.com/svn/openrails/trunk@186 a9f3cfff-6c41-7446-b0ca-052bd761e6eb

Added dynamic Brakes

fixed train jump when moving over unaligned switch

git-svn-id: http://svn.uktrainsim.com/svn/openrails/trunk@185 a9f3cfff-6c41-7446-b0ca-052bd761e6eb

REF00022: Dynamic Shadows:

git-svn-id: http://svn.uktrainsim.com/svn/openrails/trunk@184 a9f3cfff-6c41-7446-b0ca-052bd761e6eb