From: Dave Airlie <airl...@redhat.com> This follows what fglrx does, it unpacks the input we are going to indirect into a bunch of registers and indirects inside them.
Signed-off-by: Dave Airlie <airl...@redhat.com> --- src/gallium/drivers/r600/r600_shader.c | 48 +++++++++++++++++++++++++++++++--- 1 file changed, 44 insertions(+), 4 deletions(-) diff --git a/src/gallium/drivers/r600/r600_shader.c b/src/gallium/drivers/r600/r600_shader.c index cc2000d..a58955a 100644 --- a/src/gallium/drivers/r600/r600_shader.c +++ b/src/gallium/drivers/r600/r600_shader.c @@ -834,10 +834,12 @@ static int tgsi_fetch_rel_const(struct r600_shader_ctx *ctx, unsigned int cb_idx return 0; } -static int fetch_gs_input(struct r600_shader_ctx *ctx, unsigned index, unsigned vtx_id, unsigned int dst_reg) +static int fetch_gs_input(struct r600_shader_ctx *ctx, struct tgsi_full_src_register *src, unsigned int dst_reg) { struct r600_bytecode_vtx vtx; int r; + unsigned index = src->Register.Index; + unsigned vtx_id = src->Dimension.Index; int offset_reg = vtx_id / 3; int offset_chan = vtx_id % 3; @@ -847,6 +849,46 @@ static int fetch_gs_input(struct r600_shader_ctx *ctx, unsigned index, unsigned if (offset_reg == 0 && offset_chan == 2) offset_chan = 3; + if (src->Dimension.Indirect) { + int treg[3]; + int t2; + struct r600_bytecode_alu alu; + int r, i; + + /* you have got to be shitting me - + we have to put the R0.x/y/w into Rt.x Rt+1.x Rt+2.x then index reg from Rt. + at least this is what fglrx seems to do. */ + for (i = 0; i < 3; i++) { + treg[i] = r600_get_temp(ctx); + } + t2 = r600_get_temp(ctx); + for (i = 0; i < 3; i++) { + memset(&alu, 0, sizeof(struct r600_bytecode_alu)); + alu.op = ALU_OP1_MOV; + alu.src[0].sel = 0; + alu.src[0].chan = i == 2 ? 3 : i; + alu.dst.sel = treg[i]; + alu.dst.chan = 0; + alu.dst.write = 1; + alu.last = 1; + r = r600_bytecode_add_alu(ctx->bc, &alu); + if (r) + return r; + } + memset(&alu, 0, sizeof(struct r600_bytecode_alu)); + alu.op = ALU_OP1_MOV; + alu.src[0].sel = treg[0]; + alu.src[0].rel = 1; + alu.dst.sel = t2; + alu.dst.write = 1; + alu.last = 1; + r = r600_bytecode_add_alu(ctx->bc, &alu); + if (r) + return r; + offset_reg = t2; + } + + memset(&vtx, 0, sizeof(vtx)); vtx.buffer_id = R600_GS_RING_CONST_BUFFER; vtx.fetch_type = 2; /* VTX_FETCH_NO_INDEX_OFFSET */ @@ -884,10 +926,8 @@ static int tgsi_split_gs_inputs(struct r600_shader_ctx *ctx) } if (src->Register.File == TGSI_FILE_INPUT && src->Register.Dimension) { int treg = r600_get_temp(ctx); - int index = src->Register.Index; - int vtx_id = src->Dimension.Index; - fetch_gs_input(ctx, index, vtx_id, treg); + fetch_gs_input(ctx, src, treg); ctx->src[i].sel = treg; } } -- 1.8.3.1 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev