Module: Mesa Branch: master Commit: 460c5304aba646143938b76d536a6fc13a302ca8 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=460c5304aba646143938b76d536a6fc13a302ca8
Author: Tilman Sauerbeck <[email protected]> Date: Tue Sep 7 11:37:56 2010 +0200 r600g: Added preliminary support for the LOG opcode. Signed-off-by: Dave Airlie <[email protected]> --- src/gallium/drivers/r600/r600_shader.c | 122 +++++++++++++++++++++++++++++++- 1 files changed, 121 insertions(+), 1 deletions(-) diff --git a/src/gallium/drivers/r600/r600_shader.c b/src/gallium/drivers/r600/r600_shader.c index 11cabdf..6612b0e 100644 --- a/src/gallium/drivers/r600/r600_shader.c +++ b/src/gallium/drivers/r600/r600_shader.c @@ -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}, _______________________________________________ mesa-commit mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/mesa-commit
