diff options
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_fs.cpp')
-rw-r--r-- | src/mesa/drivers/dri/i965/brw_fs.cpp | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp index 80b8c8e1207..84b5920d4f5 100644 --- a/src/mesa/drivers/dri/i965/brw_fs.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs.cpp @@ -840,6 +840,34 @@ fs_inst::regs_read(int arg) const case SHADER_OPCODE_BARRIER: return 1; + case SHADER_OPCODE_MOV_INDIRECT: + if (arg == 0) { + assert(src[2].file == IMM); + unsigned region_length = src[2].ud; + + if (src[0].file == FIXED_GRF) { + /* If the start of the region is not register aligned, then + * there's some portion of the register that's technically + * unread at the beginning. + * + * However, the register allocator works in terms of whole + * registers, and does not use subnr. It assumes that the + * read starts at the beginning of the register, and extends + * regs_read() whole registers beyond that. + * + * To compensate, we extend the region length to include this + * unread portion at the beginning. + */ + if (src[0].subnr) + region_length += src[0].subnr * type_sz(src[0].type); + + return DIV_ROUND_UP(region_length, REG_SIZE); + } else { + assert(!"Invalid register file"); + } + } + break; + default: if (is_tex() && arg == 0 && src[0].file == VGRF) return mlen; |