| /* |
| * 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; |
