1 files changed, 0 insertions, 73 deletions
diff --git a/nx-X11/extras/Mesa/src/mesa/drivers/dri/ffb/ffb_fog.c b/nx-X11/extras/Mesa/src/mesa/drivers/dri/ffb/ffb_fog.c
deleted file mode 100644
index e6eca2390..000000000
--- a/nx-X11/extras/Mesa/src/mesa/drivers/dri/ffb/ffb_fog.c
+++ /dev/null
@@ -1,73 +0,0 @@
-
-/* FFB fog support:
- *
- * There are two levels of support for FOG in the Creator3D series.
- * Both involve a depth cue unit and 1 or 4 slope factors and scales
- * for varying the pixel intensity.
- *
- * Chips prior to FFB2 only have a single set of such settings, FFB2
- * and later have 4 settings.
- *
- * The basic depth cueing equation is:
- *
- *	C_final = dcsf(z) * C_orig + (1 - dcsf(z)) * C_fog
- *
- * 	C_final	--	The final color passed to blend unit or frame
- *			buffer (if blending is disabled).
- *
- *	C_orig	--	The color we start with, which comes either from
- *			the raster processor or cpu writes to the smart
- *			framebuffer aperture.
- *
- *	C_fog	--	This is the "fog" color, ie. the desired color
- *			at the deepest Z.
- *
- *	dcsf(z)	--	The depth cue scale as a function of Z.
- *
- * With pre-FFB2 chips there are four parameters to control the depth
- * cue scaling.  Here is a diagram:
- *
- *		   1.0	-------------
- *			|   |   |   |
- *			|   |   |   |
- *		Sfront	XXXXX---+---+
- *			|   |X  |   |
- *	dcsf(z)		|   | X |   |
- *			|   |  X|   |
- *		Sback	+---+---XXXXX
- *			|   |   |   |
- *		   0.0	-------------
- *			0.0 Zf  Zb 1.0
- *
- *			      z
- * Therefore:
- *
- *	for Zf < z < Zb
- *
- *		dcsf(z) = Sback + ((Sfront - Sback) / (Zf - Zb)) * (Zb - z)
- *
- *	for z <= Zf
- *
- *		dcsf(z) = Sfront
- *
- *	for z >= Zb
- *
- *		dcsf(z) = Sback
- *
- * With FFB2 and later, 3 more slope regions are provided, the first of
- * them starts at the end of the region defined above and ends at a
- * specified depth value, the next slop region starts there and ends
- * at the next specified depth value, and so on.  Each of the 3 slope
- * regions also have scale and slope settings of their own.
- *
- * The C_fog color is programmed into the alpha blending unit color1
- * and color2 registers as follows:
- *
- *	color1:		-(C_fog)
- *	color2:		C_fog - bg
- *
- * If alpha blending is disabled, the bg factor is zero.  Note that
- * the alpha blending color registers specify each of the RGB values
- * as 9 bit 1:8 signed numbers in the range -1.00 to 0.ff inclusive.
- * (ie. 0x100 == -1.00 and 0x0ff == +0.ff)
- */