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Fog-Hacks and other stuff #19

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Fog-Hacks and other stuff #19

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7a4a873
psh: Rename c0 and c1 uniforms
JayFoxRox Aug 13, 2018
0c7fdf7
psh: Cleanup and dead code removal
JayFoxRox Aug 13, 2018
75eb05d
planned fixup for cleanup
JayFoxRox Aug 14, 2018
fb8f52d
psh: Refactor register combiner code
JayFoxRox Aug 13, 2018
8bdd938
psh: Fix GLSL error in MUX and assert that MSB is used
JayFoxRox Aug 13, 2018
5047175
psh: Use input mapping from NV_register_combiners GL extension
JayFoxRox Aug 13, 2018
6a12008
psh: Use output clamping from NV_register_combiners GL extension
JayFoxRox Aug 13, 2018
7ddacf2
psh: Use G as alpha in final combiner
JayFoxRox Aug 13, 2018
0e9f947
psh: Use vec3 for rgb, float for alpha and vec4 for registers
JayFoxRox Aug 13, 2018
f751619
Experimental use of GL vars
JayFoxRox Aug 13, 2018
82202d4
fixup GLSL bool-mix
JayFoxRox Aug 13, 2018
25577ea
assert muxsum only happens if no dot was done
JayFoxRox Aug 13, 2018
c847a7e
pgraph: Also re-upload surfaces if the address or pitch has changed
JayFoxRox Aug 14, 2018
e6f1a22
Add code for debugging an issue
JayFoxRox Aug 14, 2018
b1a455f
non-thaw hack: nan seems to disable fog? but what fog distance is used?
JayFoxRox Aug 14, 2018
c60d11d
Make sure that fogDistance is positive, is this correct?
JayFoxRox Aug 14, 2018
ae8b040
Use value which seem to be used in D3D fog calc
JayFoxRox Aug 14, 2018
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5 changes: 3 additions & 2 deletions hw/xbox/nv2a/nv2a_shaders.c
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Original file line number Diff line number Diff line change
Expand Up @@ -715,11 +715,12 @@ STRUCT_VERTEX_DATA);
qstring_append(body, " float fogDistance = oFog.x;\n");
}

qstring_append(body, " if (isnan(fogDistance)) { fogDistance = 1.0; }\n");
/* FIXME: Microsoft just decided to use 13 bits, but hardware should have 14?! */
qstring_append(body, " if (isnan(fogDistance)) { fogDistance = 8192.0; }\n");
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This value would probably be off-by-one? or is it a float?


/* FIXME: Do this per pixel? */

qstring_append(body, " fogDistance = max(fogDistance, 0.0);\n");
qstring_append(body, " fogDistance = clamp(fogDistance, 0.0, 8192.0);\n");

switch (state.fog_mode) {
case FOG_MODE_LINEAR:
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