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st/mesa: stop using TGSI_OPCODE_CLAMP

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Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
This commit is contained in:
Marek Olšák 2017-02-16 16:59:05 +01:00
parent 45240ce598
commit 1d1b769561
1 changed files with 4 additions and 10 deletions
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14
src/mesa/state_tracker/st_atifs_to_tgsi.c
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@ -619,7 +619,6 @@ struct tgsi_atifs_transform {
const struct st_fp_variant_key *key;
bool first_instruction_emitted;
unsigned fog_factor_temp;
unsigned fog_clamp_imm;
};
static inline struct tgsi_atifs_transform *
@ -676,10 +675,6 @@ transform_instr(struct tgsi_transform_context *tctx,
/* add a new temp for the fog factor */
ctx->fog_factor_temp = ctx->info.file_max[TGSI_FILE_TEMPORARY] + 1;
tgsi_transform_temp_decl(tctx, ctx->fog_factor_temp);
/* add immediates for clamp */
ctx->fog_clamp_imm = ctx->info.immediate_count;
tgsi_transform_immediate_decl(tctx, 1.0f, 0.0f, 0.0f, 0.0f);
}
transform_inst:
@ -790,17 +785,16 @@ transform_inst:
inst.Src[0].Register.Negate ^= 1;
tctx->emit_instruction(tctx, &inst);
}
/* f = CLAMP(f, 0.0, 1.0) */
/* f = saturate(f) */
inst = tgsi_default_full_instruction();
inst.Instruction.Opcode = TGSI_OPCODE_CLAMP;
inst.Instruction.Opcode = TGSI_OPCODE_MOV;
inst.Instruction.NumDstRegs = 1;
inst.Instruction.Saturate = 1;
inst.Dst[0].Register.File = TGSI_FILE_TEMPORARY;
inst.Dst[0].Register.Index = ctx->fog_factor_temp;
inst.Dst[0].Register.WriteMask = TGSI_WRITEMASK_XYZW;
inst.Instruction.NumSrcRegs = 3;
inst.Instruction.NumSrcRegs = 1;
SET_SRC(&inst, 0, TGSI_FILE_TEMPORARY, ctx->fog_factor_temp, X, Y, Z, W);
SET_SRC(&inst, 1, TGSI_FILE_IMMEDIATE, ctx->fog_clamp_imm, Y, Y, Y, Y); // 0.0
SET_SRC(&inst, 2, TGSI_FILE_IMMEDIATE, ctx->fog_clamp_imm, X, X, X, X); // 1.0
tctx->emit_instruction(tctx, &inst);
/* REG0 = LRP(f, REG0, fogcolor) */