diff options
Diffstat (limited to 'i965_drv_video/shaders/render/exa_sf.g4a')
| -rw-r--r-- | i965_drv_video/shaders/render/exa_sf.g4a | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/i965_drv_video/shaders/render/exa_sf.g4a b/i965_drv_video/shaders/render/exa_sf.g4a new file mode 100644 index 0000000..3e660ac --- /dev/null +++ b/i965_drv_video/shaders/render/exa_sf.g4a @@ -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; |