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i965/fs: Fix fs_inst::regs_written calculation for instructions with scalar dst.

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Scalar registers are required to have zero stride, fix the
regs_written calculation not to assume that the instruction writes
zero registers in that case.

v2: Rename CEILING() to DIV_ROUND_UP(). (Matt, Ken)

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
This commit is contained in:
Francisco Jerez 2015-02-03 21:57:38 +02:00
parent f2668f9f21
commit 3df2cb2f86
1 changed files with 2 additions and 1 deletions
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3
src/mesa/drivers/dri/i965/brw_fs.cpp
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@ -126,7 +126,8 @@ fs_inst::init(enum opcode opcode, uint8_t exec_size, const fs_reg &dst,
case HW_REG:
case MRF:
case ATTR:
this->regs_written = (dst.width * dst.stride * type_sz(dst.type) + 31) / 32;
this->regs_written =
DIV_ROUND_UP(MAX2(dst.width * dst.stride, 1) * type_sz(dst.type), 32);
break;
case BAD_FILE:
this->regs_written = 0;