diff options
Diffstat (limited to 'src/gallium/auxiliary/tgsi/exec')
| -rw-r--r-- | src/gallium/auxiliary/tgsi/exec/tgsi_exec.c | 29 |
1 files changed, 15 insertions, 14 deletions
diff --git a/src/gallium/auxiliary/tgsi/exec/tgsi_exec.c b/src/gallium/auxiliary/tgsi/exec/tgsi_exec.c index 4b33d7e8bd..5d5125f7cb 100644 --- a/src/gallium/auxiliary/tgsi/exec/tgsi_exec.c +++ b/src/gallium/auxiliary/tgsi/exec/tgsi_exec.c @@ -1530,22 +1530,23 @@ exec_instruction( break; case TGSI_OPCODE_EXP: - debug_printf("TGSI: EXP opcode not implemented\n"); - /* from ARB_v_p: - tmp = ScalarLoad(op0); - result.x = 2^floor(tmp); - result.y = tmp - floor(tmp); - result.z = RoughApprox2ToX(tmp); - result.w = 1.0; - */ -#if 0 - /* something like this: */ FETCH( &r[0], 0, CHAN_X ); - micro_exp2( &r[0], &r[0] ); - FOR_EACH_ENABLED_CHANNEL( *inst, chan_index ) { - STORE( &r[0], 0, chan_index ); + micro_flr( &r[1], &r[0] ); /* r1 = floor(r0) */ + if (IS_CHANNEL_ENABLED( *inst, CHAN_X )) { + micro_exp2( &r[2], &r[1] ); /* r2 = 2 ^ r1 */ + STORE( &r[2], 0, CHAN_X ); /* store r2 */ + } + if (IS_CHANNEL_ENABLED( *inst, CHAN_Y )) { + micro_sub( &r[2], &r[0], &r[1] ); /* r2 = r0 - r1 */ + STORE( &r[2], 0, CHAN_Y ); /* store r2 */ + } + if (IS_CHANNEL_ENABLED( *inst, CHAN_Z )) { + micro_exp2( &r[2], &r[0] ); /* r2 = 2 ^ r0 */ + STORE( &r[2], 0, CHAN_Z ); /* store r2 */ + } + if (IS_CHANNEL_ENABLED( *inst, CHAN_W )) { + STORE( &mach->Temps[TEMP_1_I].xyzw[TEMP_1_C], 0, CHAN_W ); } -#endif break; case TGSI_OPCODE_LOG: |