From 3edfff16cde0033fbec3c2deb390212acff15d6d Mon Sep 17 00:00:00 2001 From: Jesse Barnes Date: Wed, 27 Feb 2013 14:51:32 +0000 Subject: rendercopy/bdw: Initial gen8 rendercopy Signed-off-by: Jesse Barnes Signed-off-by: Ben Widawsky --- shaders/ps/blit.g8a | 66 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 shaders/ps/blit.g8a (limited to 'shaders/ps') diff --git a/shaders/ps/blit.g8a b/shaders/ps/blit.g8a new file mode 100644 index 00000000..deeedcc5 --- /dev/null +++ b/shaders/ps/blit.g8a @@ -0,0 +1,66 @@ +/* Assemble with ".../intel-gen4asm/src/intel-gen4asm -g 7" */ + + +/* Move pixels into g10-g13. The pixel shaader does not load what you want. It + * loads the input data for a plane function to calculate what you want. The + * following is boiler plate code to move our normalized texture coordinates + * (u,v) into g10-g13. It does this 4 subspans (16 pixels) at a time. + * + * This should do the same thing, but it doesn't work for some reason. + * pln(16) g10 g6<0,1,0>F g2<8,8,1>F { align1 }; + * pln(16) g12 g6.16<1>F g2<8,8,1>F { align1 }; + */ +/* U */ +pln (8) g10<1>F g6.0<0,1,0>F g2.0<8,8,1>F { align1 }; /* pixel 0-7 */ +pln (8) g11<1>F g6.0<0,1,0>F g4.0<8,8,1>F { align1 }; /* pixel 8-15 */ +/* V */ +pln (8) g12<1>F g6.16<0,1,0> g2.0<8,8,1>F { align1 }; /* pixel 0-7 */ +pln (8) g13<1>F g6.16<0,1,0> g4.0<8,8,1>F { align1 }; /* pixel 8-15 */ + + +/* Next the we want the sampler to fetch the src texture (ie. src buffer). This + * is done with a pretty simple send message. The output goes to g112, which is + * exactly what we're supposed to use in our final send message. + * In intel-gen4asm, we should end up parsed by the following rule: + * predicate SEND execsize dst sendleadreg sndopr directsrcoperand instoptions + * + * Send message descriptor: + * 28:25 = message len = 4 // our 4 registers have 16 pixels + * 24:20 = response len = 8 // Each pixel is RGBA32, so we need 8 registers + * 19:19 = header present = 0 + * 18:17 = SIMD16 = 2 + * 16:12 = TYPE = 0 (regular sample) + * 11:08 = Sampler index = ignored/0 + * 7:0 = binding table index = src = 1 + * 0x8840001 + * + * Send message extra descriptor + * 5:5 = End of Thread = 0 + * 3:0 = Target Function ID = SFID_SAMPLER (2) + * 0x2 + */ + +send(16) g112 g10 0x2 0x8840001 { align1 }; + +/* g112-g119 now contains the sample source input, and all we must do is write + * it out to the destination render target. This is done with the send message + * as well. The only extra bits are to terminate the pixel shader. + * + * Send message descriptor: + * 28:25 = message len = 8 // 16 pixels RGBA32 + * 24:20 = response len = 0 + * 19:19 = header present = 0 + * 17:14 = message type = Render Target Write (12) + * 12:12 = Last Render Target Select = 1 + * 10:08 = Message Type = SIMD16 (0) + * 07:00 = Binding Table Index = dest = 0 + * 0x10031000 + * + * Send message extra descriptor + * 5:5 = End of Thread = 1 + * 3:0 = Target Function ID = SFID_DP_RC (5) + * 0x25 + */ +send(16) null g112 0x25 0x10031000 { align1, EOT }; + +/* vim: set ft=c ts=4 sw=2 tw=80 et: */ -- cgit v1.2.3