diff options
Diffstat (limited to 'src/shaders/h264/ildb/writeURB_UV_Child.asm')
| -rw-r--r-- | src/shaders/h264/ildb/writeURB_UV_Child.asm | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/src/shaders/h264/ildb/writeURB_UV_Child.asm b/src/shaders/h264/ildb/writeURB_UV_Child.asm new file mode 100644 index 0000000..cbb942d --- /dev/null +++ b/src/shaders/h264/ildb/writeURB_UV_Child.asm @@ -0,0 +1,39 @@ +/*
+ * Copyright © <2010>, Intel Corporation.
+ *
+ * This program is licensed under the terms and conditions of the
+ * Eclipse Public License (EPL), version 1.0. The full text of the EPL is at
+ * http://www.opensource.org/licenses/eclipse-1.0.php.
+ *
+ */
+// Module name: WriteURB_Child.asm
+//
+// General purpose module to write data to URB using the URB handle/offset in r0
+//
+//----------------------------------------------------------------
+// Assume:
+// - a0.0 and a0.1 is meg desc, has been assign with URB offset and msg size
+// - MRFs are alrady assigned with data.
+//----------------------------------------------------------------
+//
+// 16x16 byte pixel block can be saved using just 1 "send" instruction.
+
+#if defined(_DEBUG)
+ mov (1) EntrySignatureC:w 0x3535:w
+#endif
+
+// URB write header:
+//mov (8) MSGSRC.0:ud r0.0<8;8,1>:ud // Copy parent R0 header
+
+//shr (1) Temp2_W:uw URBOffsetC:uw 1:w // divide by 2, because URB entry is counted by 512bits. Offset is counted by 256bits.
+//add (1) MSGSRC.0:uw r0.0:uw Temp2_W:uw
+
+shr (1) MSGSRC.0:uw URBOffsetC:uw 1:w // divide by 2, because URB entry is counted by 512bits. Offset is counted by 256bits.
+
+//mov (1) MSGSRC.1:ud 0:ud // Reset Handle 1
+
+ // URB write 1 MRFs,
+ // Current MB offset is in URBOffset, use it as write origin
+ // Add 2 to offset to store data be be passed to the right MB
+
+send null:uw m0 MSGSRC<8;8,1>:uw URBWRITE MSG_LEN(1)+URBWMSGDSC+0x20 // URB write
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