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r600g: Added preliminary support for the LOG opcode. 

Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Tilman Sauerbeck 2010-09-07 11:37:56 +02:00 committed by Dave Airlie
parent 42c966bc49
commit 460c5304ab
1 changed files with 121 additions and 1 deletions
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122
src/gallium/drivers/r600/r600_shader.c
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@ -2033,6 +2033,126 @@ static int tgsi_exp(struct r600_shader_ctx *ctx)
return tgsi_helper_copy(ctx, inst);
}
static int tgsi_log(struct r600_shader_ctx *ctx)
{
struct tgsi_full_instruction *inst = &ctx->parse.FullToken.FullInstruction;
struct r600_bc_alu_src r600_src[3];
struct r600_bc_alu alu;
int r;
/* result.x = floor(log2(src)); */
if (inst->Dst[0].Register.WriteMask & 1) {
memset(&alu, 0, sizeof(struct r600_bc_alu));
alu.inst = CTX_INST(V_SQ_ALU_WORD1_OP2_SQ_OP2_INST_LOG_IEEE);
r = tgsi_src(ctx, &inst->Src[0], &alu.src[0]);
if (r)
return r;
alu.src[0].chan = tgsi_chan(&inst->Src[0], 0);
alu.dst.sel = ctx->temp_reg;
alu.dst.chan = 0;
alu.dst.write = 1;
alu.last = 1;
r = r600_bc_add_alu(ctx->bc, &alu);
if (r)
return r;
r = r600_bc_add_literal(ctx->bc, ctx->value);
if (r)
return r;
alu.inst = CTX_INST(V_SQ_ALU_WORD1_OP2_SQ_OP2_INST_FLOOR);
alu.src[0].sel = ctx->temp_reg;
alu.src[0].chan = 0;
alu.dst.sel = ctx->temp_reg;
alu.dst.chan = 0;
alu.dst.write = 1;
alu.last = 1;
r = r600_bc_add_alu(ctx->bc, &alu);
if (r)
return r;
r = r600_bc_add_literal(ctx->bc, ctx->value);
if (r)
return r;
}
/* result.y = FIXME; */
if ((inst->Dst[0].Register.WriteMask >> 1) & 1) {
memset(&alu, 0, sizeof(struct r600_bc_alu));
alu.inst = CTX_INST(V_SQ_ALU_WORD1_OP2_SQ_OP2_INST_MOV);
alu.src[0].sel = V_SQ_ALU_SRC_1;
alu.src[0].chan = 0;
alu.dst.sel = ctx->temp_reg;
alu.dst.chan = 1;
alu.dst.write = 1;
alu.last = 1;
r = r600_bc_add_alu(ctx->bc, &alu);
if (r)
return r;
r = r600_bc_add_literal(ctx->bc, ctx->value);
if (r)
return r;
}
/* result.z = log2(src);*/
if ((inst->Dst[0].Register.WriteMask >> 2) & 1) {
memset(&alu, 0, sizeof(struct r600_bc_alu));
alu.inst = CTX_INST(V_SQ_ALU_WORD1_OP2_SQ_OP2_INST_LOG_IEEE);
r = tgsi_src(ctx, &inst->Src[0], &alu.src[0]);
if (r)
return r;
alu.src[0].chan = tgsi_chan(&inst->Src[0], 0);
alu.dst.sel = ctx->temp_reg;
alu.dst.write = 1;
alu.dst.chan = 2;
alu.last = 1;
r = r600_bc_add_alu(ctx->bc, &alu);
if (r)
return r;
r = r600_bc_add_literal(ctx->bc, ctx->value);
if (r)
return r;
}
/* result.w = 1.0; */
if ((inst->Dst[0].Register.WriteMask >> 3) & 1) {
memset(&alu, 0, sizeof(struct r600_bc_alu));
alu.inst = CTX_INST(V_SQ_ALU_WORD1_OP2_SQ_OP2_INST_MOV);
alu.src[0].sel = V_SQ_ALU_SRC_1;
alu.src[0].chan = 0;
alu.dst.sel = ctx->temp_reg;
alu.dst.chan = 3;
alu.dst.write = 1;
alu.last = 1;
r = r600_bc_add_alu(ctx->bc, &alu);
if (r)
return r;
r = r600_bc_add_literal(ctx->bc, ctx->value);
if (r)
return r;
}
return tgsi_helper_copy(ctx, inst);
}
static int tgsi_arl(struct r600_shader_ctx *ctx)
{
/* TODO from r600c, ar values don't persist between clauses */
@ -2380,7 +2500,7 @@ static struct r600_shader_tgsi_instruction r600_shader_tgsi_instruction[] = {
{TGSI_OPCODE_RCP, 0, V_SQ_ALU_WORD1_OP2_SQ_OP2_INST_RECIP_IEEE, tgsi_trans_srcx_replicate},
{TGSI_OPCODE_RSQ, 0, V_SQ_ALU_WORD1_OP2_SQ_OP2_INST_NOP, tgsi_rsq},
{TGSI_OPCODE_EXP, 0, V_SQ_ALU_WORD1_OP2_SQ_OP2_INST_NOP, tgsi_exp},
{TGSI_OPCODE_LOG, 0, V_SQ_ALU_WORD1_OP2_SQ_OP2_INST_NOP, tgsi_unsupported},
{TGSI_OPCODE_LOG, 0, V_SQ_ALU_WORD1_OP2_SQ_OP2_INST_NOP, tgsi_log},
{TGSI_OPCODE_MUL, 0, V_SQ_ALU_WORD1_OP2_SQ_OP2_INST_MUL, tgsi_op2},
{TGSI_OPCODE_ADD, 0, V_SQ_ALU_WORD1_OP2_SQ_OP2_INST_ADD, tgsi_op2},
{TGSI_OPCODE_DP3, 0, V_SQ_ALU_WORD1_OP2_SQ_OP2_INST_DOT4, tgsi_dp},