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r600g: Implemented the y component write for the LOG opcode.

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This makes the 'vp1-LOG test' piglit test work.

Signed-off-by: Tilman Sauerbeck <tilman@code-monkey.de>
This commit is contained in:
Tilman Sauerbeck 2010-09-08 11:21:21 +02:00
parent ea9e5dbbc2
commit 96a4edb8cc
1 changed files with 90 additions and 5 deletions
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95
src/gallium/drivers/r600/r600_shader.c
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@ -2084,7 +2084,6 @@ static int tgsi_exp(struct r600_shader_ctx *ctx)
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;
@ -2129,13 +2128,99 @@ static int tgsi_log(struct r600_shader_ctx *ctx)
return r;
}
/* result.y = FIXME; */
/* result.y = src.x / (2 ^ floor(log2(src.x))); */
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.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 = 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;
memset(&alu, 0, sizeof(struct r600_bc_alu));
alu.inst = CTX_INST(V_SQ_ALU_WORD1_OP2_SQ_OP2_INST_FLOOR);
alu.src[0].sel = ctx->temp_reg;
alu.src[0].chan = 1;
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;
memset(&alu, 0, sizeof(struct r600_bc_alu));
alu.inst = CTX_INST(V_SQ_ALU_WORD1_OP2_SQ_OP2_INST_EXP_IEEE);
alu.src[0].sel = ctx->temp_reg;
alu.src[0].chan = 1;
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;
memset(&alu, 0, sizeof(struct r600_bc_alu));
alu.inst = CTX_INST(V_SQ_ALU_WORD1_OP2_SQ_OP2_INST_RECIP_IEEE);
alu.src[0].sel = ctx->temp_reg;
alu.src[0].chan = 1;
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;
memset(&alu, 0, sizeof(struct r600_bc_alu));
alu.inst = CTX_INST(V_SQ_ALU_WORD1_OP2_SQ_OP2_INST_MUL);
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.src[1].sel = ctx->temp_reg;
alu.src[1].chan = 1;
alu.dst.sel = ctx->temp_reg;
alu.dst.chan = 1;