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309 Commits

Author SHA1 Message Date
gabest11 4ed3035661 GSdx: pixel shaders were reorganized, things might be broken :P 
git-svn-id: http://pcsx2.googlecode.com/svn/trunk@1341 96395faa-99c1-11dd-bbfe-3dabce05a288
 2009-06-06 17:53:34 +00:00
Jake.Stine 95ff8e3a98 GSdx: Applied normalization of UV in the DX9 texture repeat shader, allowing it to be re-enabled. Fixes massive slowdown in the Xenosaga 2 opening menu (Issue 262 / DX9 only) [note: collective fix uncovered by sudonim, feal87, and drk||raziel -- I'm just the patching boy] 
git-svn-id: http://pcsx2.googlecode.com/svn/trunk@1340 96395faa-99c1-11dd-bbfe-3dabce05a288
 2009-06-06 11:00:30 +00:00
gabest11 3e12966919 GSdx: Even more alpha test voodoo magic, it must be nailed now! 
And there is even an explanation. 

The tfx functions calculate At * Af >> 7, which means modulating by 0x80 should return At as the result. 

With the evil floating point pixel shader however 0x80 translates to 128/255 (0.502), not exactly 0.5, modulation as At' * Af' * 2 (' means 0 - 1.0 range) is not the same as with integers.

At' = Af' = 0.502
At' * Af' * 2 = 0.504

If the alpha test happens to be "not equal to 0x80", then abs(0.504 - 128/255) < 0.5/255 will just miss.

Solution is to re-scale those values to the integer range, do the calculations, and then back to float again, but in the end it just simplifies down to At' * Af' * 255/128, doh...

At * Af >> 7 => ((At' * 255) * (Af' * 255) / 128) / 255 => At' * Af' * 255/128

At' = Af' = 0.502
0.502 * 0.502 * 255/128 = 0.502 (w00t!)


git-svn-id: http://pcsx2.googlecode.com/svn/trunk@1272 96395faa-99c1-11dd-bbfe-3dabce05a288
 2009-05-27 05:55:32 +00:00
gabest11 081006bcbe GSdx: dx9 hw mode got a vertex buffer too (as dx10), it was an old TODO... 
git-svn-id: http://pcsx2.googlecode.com/svn/trunk@1250 96395faa-99c1-11dd-bbfe-3dabce05a288
 2009-05-23 23:52:53 +00:00
gabest11 8d119f3928 GSdx: more source cleanup and something interesting on F7 
git-svn-id: http://pcsx2.googlecode.com/svn/trunk@1239 96395faa-99c1-11dd-bbfe-3dabce05a288
 2009-05-22 23:23:38 +00:00
gabest11 c64691811a GSdx: 3.4.9. Texture Function => Decal/TCC=RGB: Av = At (gs_user v3 and v5) or Av = Af (v6)? Seems it was Af... Sonic unleashed was one of the games relying on this setting, could not find any other yet. Also removed the green stripes, shadow sw-mode only. 
git-svn-id: http://pcsx2.googlecode.com/svn/trunk@1145 96395faa-99c1-11dd-bbfe-3dabce05a288
 2009-05-07 12:34:58 +00:00
gabest11 270c8ee3d2 GSdx: more alpha test magic 
git-svn-id: http://pcsx2.googlecode.com/svn/trunk@1076 96395faa-99c1-11dd-bbfe-3dabce05a288
 2009-04-27 21:19:50 +00:00
gabest11 1245659eee GSdx: fixed Issue 182 (narrowed the neq alpha test range to +/-0.4f/255, scream if something broke), and re-enabled something to make DATE faster (counting min/max of the vertices outperforms stencil buffer clearing when there are many small primitive batches). 
git-svn-id: http://pcsx2.googlecode.com/svn/trunk@1074 96395faa-99c1-11dd-bbfe-3dabce05a288
 2009-04-27 20:17:06 +00:00
refraction 93da10abbb git-svn-id: http://pcsx2.googlecode.com/svn/trunk@411 96395faa-99c1-11dd-bbfe-3dabce05a288 2009-02-06 19:15:15 +00:00