From 29f5b00e6e3def63682ac3cf46ff15dc51509d61 Mon Sep 17 00:00:00 2001 From: Alyssa Rosenzweig Date: Mon, 11 Nov 2019 08:15:46 -0500 Subject: [PATCH] pan/midgard: Fix vertex texturing on early Midgard We use a different set of texture registers, probably to save hardware. Signed-off-by: Alyssa Rosenzweig Reviewed-by: Tomeu Vizoso Tested-by: Andre Heider --- src/panfrost/midgard/midgard_ra.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/src/panfrost/midgard/midgard_ra.c b/src/panfrost/midgard/midgard_ra.c index 7035a2a160b..85ad96ff312 100644 --- a/src/panfrost/midgard/midgard_ra.c +++ b/src/panfrost/midgard/midgard_ra.c @@ -441,6 +441,16 @@ allocate_registers(compiler_context *ctx, bool *spilled) lcra_set_disjoint_class(l, REG_CLASS_TEXR, REG_CLASS_TEXW); + /* To save space on T720, we don't have real texture registers. + * Instead, tex inputs reuse the load/store pipeline registers, and + * tex outputs use work r0/r1. Note we still use TEXR/TEXW classes, + * noting that this handles interferences and sizes correctly. */ + + if (ctx->gpu_id == 0x0720) { + l->class_start[REG_CLASS_TEXR] = l->class_start[REG_CLASS_LDST]; + l->class_start[REG_CLASS_TEXW] = l->class_start[REG_CLASS_WORK]; + } + unsigned *found_class = calloc(sizeof(unsigned), ctx->temp_count); mir_foreach_instr_global(ctx, ins) { -- 2.30.2