Module: Mesa Branch: master Commit: 27bfd57bc72b63fb97e6fcc34348552db344535c URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=27bfd57bc72b63fb97e6fcc34348552db344535c
Author: Gert Wollny <[email protected]> Date: Wed Apr 24 09:50:01 2019 +0200 softpipe: Add (fake) support for TGSI_OPCODE_INTERP_SAMPLE Softpipe doesn't support more than one sample, so this function implements the interpolation at sample 0 and adds a stub to make it possible to interpolate at other samples. As it is this makes the piglits "fs-interpolateatsample-*" pass, but they only ever test sample 0 anyway. Signed-off-by: Gert Wollny <[email protected]> Reviewed-by: Roland Scheidegger <[email protected]> --- src/gallium/auxiliary/tgsi/tgsi_exec.c | 41 +++++++++++++++++++++++++++++++++- 1 file changed, 40 insertions(+), 1 deletion(-) diff --git a/src/gallium/auxiliary/tgsi/tgsi_exec.c b/src/gallium/auxiliary/tgsi/tgsi_exec.c index 2a599bde040..9c219abf01d 100644 --- a/src/gallium/auxiliary/tgsi/tgsi_exec.c +++ b/src/gallium/auxiliary/tgsi/tgsi_exec.c @@ -5168,6 +5168,43 @@ micro_umsb(union tgsi_exec_channel *dst, dst->i[3] = util_last_bit(src->u[3]) - 1; } + +static void +exec_interp_at_sample(struct tgsi_exec_machine *mach, + const struct tgsi_full_instruction *inst) +{ + union tgsi_exec_channel index; + union tgsi_exec_channel index2D; + union tgsi_exec_channel result[TGSI_NUM_CHANNELS]; + const struct tgsi_full_src_register *reg = &inst->Src[0]; + + assert(reg->Register.File == TGSI_FILE_INPUT); + assert(inst->Src[1].Register.File == TGSI_FILE_IMMEDIATE); + + get_index_registers(mach, reg, &index, &index2D); + float sample = mach->Imms[inst->Src[1].Register.Index][inst->Src[1].Register.SwizzleX]; + + /* Short cut: sample 0 is like a normal fetch */ + for (unsigned chan = 0; chan < TGSI_NUM_CHANNELS; chan++) { + if (!(inst->Dst[0].Register.WriteMask & (1 << chan))) + continue; + + fetch_src_file_channel(mach, TGSI_FILE_INPUT, chan, &index, &index2D, + &result[chan]); + if (sample != 0.0f) { + + /* TODO: define the samples > 0, but so far we only do fake MSAA */ + float x = 0; + float y = 0; + + unsigned pos = index2D.i[chan] * TGSI_EXEC_MAX_INPUT_ATTRIBS + index.i[chan]; + assert(pos >= 0); + assert(pos < TGSI_MAX_PRIM_VERTICES * PIPE_MAX_ATTRIBS); + mach->InputSampleOffsetApply[pos](mach, pos, chan, x, y, &result[chan]); + } + store_dest(mach, &result[chan], &inst->Dst[0], inst, chan, TGSI_EXEC_DATA_FLOAT); + } +} /** * Execute a TGSI instruction. * Returns TRUE if a barrier instruction is hit, @@ -6212,7 +6249,9 @@ exec_instruction( case TGSI_OPCODE_I642D: exec_double_unary(mach, inst, micro_i642d); break; - + case TGSI_OPCODE_INTERP_SAMPLE: + exec_interp_at_sample(mach, inst); + break; default: assert( 0 ); } _______________________________________________ mesa-commit mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/mesa-commit
