diff options
| author | Kenneth Graunke <[email protected]> | 2014-01-29 14:16:27 -0800 |
|---|---|---|
| committer | Kenneth Graunke <[email protected]> | 2014-02-20 15:50:57 -0800 |
| commit | 850e372fc7ff3377d7ffdf825d5ebcdd72beee1b (patch) | |
| tree | 90f75b9fabab4e30c2f14535c8574fc90b24ced2 /src/mesa/drivers | |
| parent | 3663bbe773187dee341556ef29e58b1143ef2f5c (diff) | |
i965: Drop bogus F32TO16/F16TO32 instructions on Broadwell - use MOV.
Broadwell removed the F32TO16 and F16TO32 instructions. However, it has
actual support for HF values, so they're actually just MOV.
Fixes vs-packHalf2x16 and vs-unpackHalf2x16 tests (both the ARB
extension and ES 3.0 variants).
v2: Emulate F32TO16's align16 zeroing bug, since Chad's front end code
relies on it happening. We can probably refactor this code to be
better later.
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>
Diffstat (limited to 'src/mesa/drivers')
| -rw-r--r-- | src/mesa/drivers/dri/i965/gen8_fs_generator.cpp | 4 | ||||
| -rw-r--r-- | src/mesa/drivers/dri/i965/gen8_generator.cpp | 2 | ||||
| -rw-r--r-- | src/mesa/drivers/dri/i965/gen8_vec4_generator.cpp | 6 |
3 files changed, 6 insertions, 6 deletions
diff --git a/src/mesa/drivers/dri/i965/gen8_fs_generator.cpp b/src/mesa/drivers/dri/i965/gen8_fs_generator.cpp index e5fa3d2d25f..0e1214d82b9 100644 --- a/src/mesa/drivers/dri/i965/gen8_fs_generator.cpp +++ b/src/mesa/drivers/dri/i965/gen8_fs_generator.cpp @@ -920,10 +920,10 @@ gen8_fs_generator::generate_code(exec_list *instructions) break; case BRW_OPCODE_F32TO16: - F32TO16(dst, src[0]); + MOV(retype(dst, BRW_REGISTER_TYPE_HF), src[0]); break; case BRW_OPCODE_F16TO32: - F16TO32(dst, src[0]); + MOV(dst, retype(src[0], BRW_REGISTER_TYPE_HF)); break; case BRW_OPCODE_CMP: diff --git a/src/mesa/drivers/dri/i965/gen8_generator.cpp b/src/mesa/drivers/dri/i965/gen8_generator.cpp index 1e2ac09bfd5..ca38af61072 100644 --- a/src/mesa/drivers/dri/i965/gen8_generator.cpp +++ b/src/mesa/drivers/dri/i965/gen8_generator.cpp @@ -154,8 +154,6 @@ ALU2(ASR) ALU3(BFE) ALU2(BFI1) ALU3(BFI2) -ALU1(F32TO16) -ALU1(F16TO32) ALU1(BFREV) ALU1(CBIT) ALU2_ACCUMULATE(ADDC) diff --git a/src/mesa/drivers/dri/i965/gen8_vec4_generator.cpp b/src/mesa/drivers/dri/i965/gen8_vec4_generator.cpp index 7ed5d2a4b8c..7f6b2094e79 100644 --- a/src/mesa/drivers/dri/i965/gen8_vec4_generator.cpp +++ b/src/mesa/drivers/dri/i965/gen8_vec4_generator.cpp @@ -586,11 +586,13 @@ gen8_vec4_generator::generate_vec4_instruction(vec4_instruction *instruction, break; case BRW_OPCODE_F32TO16: - F32TO16(dst, src[0]); + /* Emulate the Gen7 zeroing bug. */ + MOV(retype(dst, BRW_REGISTER_TYPE_UD), brw_imm_ud(0u)); + MOV(retype(dst, BRW_REGISTER_TYPE_HF), src[0]); break; case BRW_OPCODE_F16TO32: - F16TO32(dst, src[0]); + MOV(dst, retype(src[0], BRW_REGISTER_TYPE_HF)); break; case BRW_OPCODE_LRP: |