From 04bdc56872f5b3ea00a8d2c88900cb07eea846f4 Mon Sep 17 00:00:00 2001 From: Kenneth Graunke Date: Tue, 5 Feb 2019 19:02:44 -0800 Subject: [PATCH] program: Make prog_to_nir create texture/sampler derefs. Until now, prog_to_nir has been setting texture_index and sampler_index directly. This is different than GLSL shaders, which create variable dereferences and rely on lowering passes to reach this final form. radeonsi uses variable dereferences for samplers rather than texture_index and sampler_index, so it doesn't even make sense to set them there. By moving to derefs, we ensure that both GLSL and ARB programs produce the same final form that the driver desires. Reviewed-by: Eric Anholt --- src/mesa/program/prog_to_nir.c | 21 ++++++++++++++++----- 1 file changed, 16 insertions(+), 5 deletions(-) diff --git a/src/mesa/program/prog_to_nir.c b/src/mesa/program/prog_to_nir.c index afa490c..9d4f6d6 100644 --- a/src/mesa/program/prog_to_nir.c +++ b/src/mesa/program/prog_to_nir.c @@ -529,6 +529,9 @@ ptn_tex(struct ptn_compile *c, nir_alu_dest dest, nir_ssa_def **src, abort(); } + /* Deref sources */ + num_srcs += 2; + if (prog_inst->TexShadow) num_srcs++; @@ -536,8 +539,6 @@ ptn_tex(struct ptn_compile *c, nir_alu_dest dest, nir_ssa_def **src, instr->op = op; instr->dest_type = nir_type_float; instr->is_shadow = prog_inst->TexShadow; - instr->texture_index = prog_inst->TexSrcUnit; - instr->sampler_index = prog_inst->TexSrcUnit; switch (prog_inst->TexSrcTarget) { case TEXTURE_1D_INDEX: @@ -580,17 +581,27 @@ ptn_tex(struct ptn_compile *c, nir_alu_dest dest, nir_ssa_def **src, unreachable("can't reach"); } - if (!c->sampler_vars[prog_inst->TexSrcUnit]) { + nir_variable *var = c->sampler_vars[prog_inst->TexSrcUnit]; + if (!var) { const struct glsl_type *type = glsl_sampler_type(instr->sampler_dim, false, false, GLSL_TYPE_FLOAT); - nir_variable *var = - nir_variable_create(b->shader, nir_var_uniform, type, "sampler"); + var = nir_variable_create(b->shader, nir_var_uniform, type, "sampler"); var->data.binding = prog_inst->TexSrcUnit; + var->data.explicit_binding = true; c->sampler_vars[prog_inst->TexSrcUnit] = var; } + nir_deref_instr *deref = nir_build_deref_var(b, var); + unsigned src_number = 0; + instr->src[src_number].src = nir_src_for_ssa(&deref->dest.ssa); + instr->src[src_number].src_type = nir_tex_src_texture_deref; + src_number++; + instr->src[src_number].src = nir_src_for_ssa(&deref->dest.ssa); + instr->src[src_number].src_type = nir_tex_src_sampler_deref; + src_number++; + instr->src[src_number].src = nir_src_for_ssa(nir_swizzle(b, src[0], SWIZ(X, Y, Z, W), instr->coord_components, true)); -- 2.7.4