0,0 → 1,107 |
/* |
* Copyright © 2006 Intel Corporation |
* |
* Permission is hereby granted, free of charge, to any person obtaining a |
* copy of this software and associated documentation files (the "Software"), |
* to deal in the Software without restriction, including without limitation |
* the rights to use, copy, modify, merge, publish, distribute, sublicense, |
* and/or sell copies of the Software, and to permit persons to whom the |
* Software is furnished to do so, subject to the following conditions: |
* |
* The above copyright notice and this permission notice (including the next |
* paragraph) shall be included in all copies or substantial portions of the |
* Software. |
* |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
* IN THE SOFTWARE. |
* |
* Authors: |
* Keith Packard <keithp@keithp.com> |
* Eric Anholt <eric@anholt.net> |
* |
*/ |
|
/* |
* Inputs (note all sub-register addresses are bytes, not float indices) |
* |
* Note that the vertices will have been reordered: |
* |
* V0 is topmost (leftmost among topmost) (upper left) |
* V1 is next clockwise (lower right) |
* V2 is remaining (lower left) |
* |
* V0 ...................... XX |
* | . |
* | . |
* | . |
* V2------------------------V1 |
* |
* G0 thread state -- just pass along |
* |
* G1 and G2 are fixed by SF spec |
* |
* G1.0 reserved |
* G1.4 Provoking vertex |
* G1.8 Determinant |
* G1.12 X1 - X0 |
* G1.16 X2 - X0 |
* G1.20 Y1 - Y0 |
* G1.24 Y2 - Y0 |
* G1.30 reserved |
* |
* G2.0 Z0 |
* G2.4 1/W0 |
* G2.8 Z1 |
* G2.12 1/W1 |
* G2.16 Z2 |
* G2.20 1/W2 |
* G2.24 reserved |
* G2.30 reserved |
* |
* G3 is V0 Vertex Attribute Data from URB (upper left) |
* |
* G3.0 u0 |
* G3.4 v0 |
* |
* G4 is V1 Vertex Attribute Data from URB (lower right) |
* |
* G4.0 u1 |
* G4.4 v1 |
* |
* G5 is V2 Vertex Attribute Data from URB (lower left) |
* |
*/ |
|
/* Compute inverses of the input deltas */ |
send (4) 0 g6<1>F g1.12<4,4,1>F math inv mlen 1 rlen 1 { align1 }; |
|
/* texture location at V0 */ |
mov (4) m3<1>F g3<4,4,1>F { align1 }; |
|
/* compute V1 - V2 (motion in X) for texture coordinates */ |
add (4) g7<1>F g4<4,4,1>F -g5<4,4,1>F { align1 }; |
|
/* multiply by 1/dx */ |
mul (4) m1<1>F g7<4,4,1>F g6.0<0,1,0>F { align1 }; |
|
/* Compute V2 - V0 (motion in Y) for texture coordinates */ |
add (4) g7<1>F g5<4,4,1>F -g3<4,4,1>F { align1 }; |
|
/* multiply by 1/dy */ |
mul (4) m2<1>F g7<4,4,1>F g6.8<0,1,0>F {align1 }; |
|
/* and we're done */ |
send (8) 0 null g0<8,8,1>F urb 0 transpose used complete mlen 4 rlen 0 { align1 EOT }; |
nop; |
nop; |
nop; |
nop; |
nop; |
nop; |
nop; |
nop; |