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| author | Adam Jackson <ajax@redhat.com> | 2008-02-23 20:29:51 -0500 |
|---|---|---|
| committer | Adam Jackson <ajax@redhat.com> | 2008-02-23 20:29:51 -0500 |
| commit | 05dc3e4fc19d056ce99a7b110665adab2ca1ea21 (patch) | |
| tree | 6fc09bf9f0b424ab4a0b8a9f4a164fe330230e26 | |
| parent | 080606ad528972623e1ed1124d8efe7705a73446 (diff) | |
Clarify R500 US setup.
| -rw-r--r-- | src/radeon_reg.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/radeon_reg.h b/src/radeon_reg.h index 03657d1..5469e9d 100644 --- a/src/radeon_reg.h +++ b/src/radeon_reg.h @@ -4038,8 +4038,10 @@ /* * The R500 unified shader (US) registers come in banks of 512 each, one - * for each instruction slot in the shader. The base _0 registers are - * defined here, use offsets to program the others. + * for each instruction slot in the shader. You can't touch them directly. + * R500_US_VECTOR_INDEX() sets the base instruction to modify; successive + * writes to R500_GA_US_VECTOR_DATA autoincrement the index after the + * instruction is fully specified. */ #define R500_US_ALU_ALPHA_INST_0 0xa800 # define R500_ALPHA_OP_MAD 0 |