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Author SHA1 Message Date
Bill Currie
8c5e278bf8 Implement frame blending for iqm. 
Now that I have things working... :)
 2012-05-15 21:08:47 +09:00
Bill Currie
c694b9f77e Add Mat4Blend macro. 2012-05-15 21:08:46 +09:00
Bill Currie
a938c7fb14 Almost fix the animations. 
There's still a problem with his finger tips and feet, but the rest of his
limbs seem to be working well. Much thanks to Spike for encouraging me to
do a dump of the matices that are actually sent to the card.

It turns out that animated joints remain relative right up to the last
moment.
 2012-05-15 21:08:46 +09:00
Bill Currie
4ba69b511b Make quat_origin the right type. 
It's quat_t, not vec3_t :P.
 2012-05-15 21:08:46 +09:00
Bill Currie
202ab04572 Ensure the rotation quats are normalized. 
Doesn't make any noticeable difference, but it doesn't hurt.
 2012-05-15 21:08:46 +09:00
Bill Currie
31d89782ef Use the correct index variable when byteswapping the arrays. 
Not the cause of the broken animations :(
 2012-05-15 21:08:46 +09:00
Bill Currie
7cda91a879 Temporarily disable dual quaternions. 
The animation data isn't getting loaded or used properly (not sure yet).
This helps ensure it's not something I've done wrong with dual quats.
 2012-05-15 21:08:46 +09:00
Bill Currie
4b38048a5c Create functions for rotation and translation. 2012-05-15 21:08:46 +09:00
Bill Currie
5b4fdd2a93 Use the correct position for light calcs. 
I should have remembered that gl_FragCoord wasn't right.
 2012-05-15 21:08:46 +09:00
Bill Currie
2080c337d7 Avoid using malloc/free every model/frame. 2012-05-15 21:08:46 +09:00
Bill Currie
c2e0674d50 Implement R_IQMGetLerpedFrames(). 
Like R_AliasGetLerpedFrames, but for IQM. It calcualtes the current frame
number and blend between the previous and current frames.
 2012-05-15 21:08:46 +09:00
Bill Currie
8387d987e2 Change position to vposition. 2012-05-15 21:08:46 +09:00
Bill Currie
099ef348c6 Advance the vertex attrib index. 
Disabling the array right after enabling it was causing things to just not
work :P
 2012-05-15 21:08:46 +09:00
Bill Currie
d1d4c6142c Get the frame data from the right places. 
Always using joint[0] of the frames wasn't very useful.
 2012-05-15 21:08:46 +09:00
Bill Currie
74cb49ef7c Free the blended frame data. 2012-05-15 21:08:45 +09:00
Bill Currie
551dfc47fb Build the iqm vertex arrays in the correct order. 
They need to be built in ascending type order (makes life easier in the
renderer).
 2012-05-15 21:08:45 +09:00
Bill Currie
bea8f8f9c4 Fix a segfault when searching for dlights. 
Uninitialized var bites my bum :P
 2012-05-15 21:08:45 +09:00
Bill Currie
2e98c31175 Check the corrent bits when reading scale frame data. 
Fixes the invalid reads when loading an iqm (at least for mrfixit).
 2012-05-15 21:08:45 +09:00
Bill Currie
9c69404163 Attempt to render iqm models. 
Things are a right mess (segfaults, invalid accesses on load, etc), but
hey, it's a start :)
 2012-05-15 21:08:45 +09:00
Bill Currie
15fd3be73a Allow iqm models when storing efrags. 2012-05-15 21:08:45 +09:00
Bill Currie
a880f33152 Set the model type for iqm. 
Forgot this rather important step :P
 2012-05-15 21:08:45 +09:00
Bill Currie
41e7a6c70c Search for the "nearest" dlights. 
Nearness is a function of both distance and intensity: distant bright
lights can take priority over close dim lights.
 2012-05-15 21:08:45 +09:00
Bill Currie
0becd35b65 Begin work on rendering iqm models. 
No chance of working yet, but the shaders compile :)
 2012-05-15 21:08:45 +09:00
Bill Currie
078cb10caf Add a stride field to iqm_t. 
Since iqm vertex arrays are variable, and I don't want to calculate the
stride every time I render a model, cached the value used when building the
arrays.
 2012-05-15 21:08:45 +09:00
Bill Currie
15d35fbdc9 Add mvp_mat and some comments. 2012-05-15 21:08:45 +09:00
Bill Currie
59c5bf2f9e Code up an initial version of the iqm vertex shader. 
Probably more bugs than an old kitchen cupboard :P
 2012-05-15 21:08:45 +09:00
Bill Currie
6ab3bd45e5 Implement IQM animation loading. 
Bone poses are converted to dual quaternions + shear + scale for nice
skinning. Will likely be slow for software skinning, but too bad.
 2012-05-15 21:08:45 +09:00
Bill Currie
9a3206795e Add VectorUnshear(). 
VectorUnshear uses the exact same shear vector to remove shear from a
sheared vector. ie with:
  VectorShear (shear, v, w);
  VectorUnshear (shear, w, x);
x == v within fp math limits.
 2012-05-15 21:08:44 +09:00
Bill Currie
bf38e6073e Implement iqm joint loading. 2012-05-15 21:08:44 +09:00
Bill Currie
9f253454e4 Implement and test Mat4Inverse(). 2012-05-15 21:08:44 +09:00
Bill Currie
fa6270322f Make Mat4Decompose a little more intuitive. 
Params are now in application order (good thing not much code uses it yet).
 2012-05-15 21:08:44 +09:00
Bill Currie
1473dbd526 Add a comment about the evaluation order in VectorShear. 2012-05-15 21:08:44 +09:00
Bill Currie
de131c18ad Add VectorShear and really test Mat4Decompose. 
And the tests really exercised VectorShear (first attempt had things
messed up when more than one shear value was non-zero). Also,
Mat4Decompose wasn't orthogonalizing the z axis row. Oops. Anyway,
Mat4Decompose is now known to work well, and the usage of its output is
understood :)
 2012-05-15 21:08:44 +09:00
Bill Currie
8cea6b0a1e Fix a scaling snafu in Mat4Decompose. 
Found when checking how rotation affects non-uniform scaling (haven't
written proper tests yet: need to figure out how).
 2012-05-15 21:08:44 +09:00
Bill Currie
82abd5e426 More matrix tests. 2012-05-15 21:08:44 +09:00
Bill Currie
730f9668bd Add support for mat4 * vec3 2012-05-15 21:08:44 +09:00
Bill Currie
50af8a562e Add tests for matrix decomposition and fix the bugs. 2012-05-15 21:08:44 +09:00
Bill Currie
52ab4f64f9 Add code for loading vertex colors. 
And correct an oopsie in bledweights.
 2012-05-15 21:08:44 +09:00
Bill Currie
724427a976 Add component-wise vector and quaternion division. 
Mostly for non-uniform scaling.
 2012-05-15 21:08:44 +09:00
Bill Currie
215d2e9747 Add a function to decompose a matrix. 
The function gives rotation(quaternion), scale, shear, and translation (all
three as vectors), shear is (XY, XZ, YZ).
 2012-05-15 21:08:44 +09:00
Bill Currie
1be9384f10 Load the iqm vertex and triangle data. 
Still have the meshes, joints and animations to go.
 2012-05-15 21:08:43 +09:00
Bill Currie
890223ef8e Correct the definition of DualQuatNorm. 
I'd gotten the norm and magnitude mixed up (partly because the document I
was following got the names mixed up), and then munged the formulas
together.
 2012-05-15 21:08:43 +09:00
Bill Currie
8aabb704d2 Add tests for inverting a dual quad transform. 2012-05-15 21:08:43 +09:00
Bill Currie
f874aeb941 Add support for duals and dual quaternions. 
Not everything is unit-tested, but the currently important stuff is.
 2012-05-15 21:08:43 +09:00
Bill Currie
3b938592c3 Dump some gl limits. 2012-05-15 21:08:43 +09:00
Bill Currie
26a878da48 Stub out the iqm loader. 2012-05-15 21:08:43 +09:00
Bill Currie
e6c0512f31 Ensure dstring has space for terminating 0. 
It seems (some versions of) windows vsnprintf don't count the terminating 0
when limiting the number of chars written to the buffer. Nor do they
guarantee the output string will be terminated.
 2012-05-10 14:48:43 +09:00
Bill Currie
0036a5e113 Ensure edict_size is never 0. 
Avoids division by / in NUM_FOR_EDICT
 2012-05-06 21:35:42 +09:00
Bill Currie
1dd5cccda2 Correct some more error messages. 2012-05-06 18:52:05 +09:00
Bill Currie
a0788c6cdf Implement constant folding for unary operators. 
Including conversions between float and int :)
 2012-05-06 18:49:07 +09:00