From: Dave Airlie <airlied@redhat.com>
Date: Tue, 16 Jun 2020 02:47:25 +0000 (+1000)
Subject: gallivm/nir: support passing image index into image code.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=3ca3b07fc1b46824fb7589fe06f9455d9f85bb12;p=mesa.git

gallivm/nir: support passing image index into image code.

This doesn't do anything yet, just adds parsing support for it.

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3778>
---

diff --git a/src/gallium/auxiliary/gallivm/lp_bld_nir.c b/src/gallium/auxiliary/gallivm/lp_bld_nir.c
index 734e0098f14..8daa0e09d8d 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_nir.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_nir.c
@@ -1077,6 +1077,10 @@ static void visit_load_image(struct lp_build_nir_context *bld_base,
    LLVMValueRef coords[5];
    struct lp_img_params params;
    const struct glsl_type *type = glsl_without_array(var->type);
+   unsigned const_index;
+   LLVMValueRef indir_index;
+   get_deref_offset(bld_base, deref, false, NULL, NULL,
+                    &const_index, &indir_index);
 
    memset(&params, 0, sizeof(params));
    params.target = glsl_sampler_to_pipe(glsl_get_sampler_dim(type), glsl_sampler_type_is_array(type));
@@ -1090,7 +1094,8 @@ static void visit_load_image(struct lp_build_nir_context *bld_base,
    params.img_op = LP_IMG_LOAD;
    if (glsl_get_sampler_dim(type) == GLSL_SAMPLER_DIM_MS)
       params.ms_index = get_src(bld_base, instr->src[2]);
-   params.image_index = var->data.binding;
+   params.image_index = var->data.binding + (indir_index ? 0 : const_index);
+   params.image_index_offset = indir_index;
    bld_base->image_op(bld_base, &params);
 }
 
@@ -1106,6 +1111,10 @@ static void visit_store_image(struct lp_build_nir_context *bld_base,
    LLVMValueRef coords[5];
    struct lp_img_params params;
    const struct glsl_type *type = glsl_without_array(var->type);
+   unsigned const_index;
+   LLVMValueRef indir_index;
+   get_deref_offset(bld_base, deref, false, NULL, NULL,
+                    &const_index, &indir_index);
 
    memset(&params, 0, sizeof(params));
    params.target = glsl_sampler_to_pipe(glsl_get_sampler_dim(type), glsl_sampler_type_is_array(type));
@@ -1122,7 +1131,8 @@ static void visit_store_image(struct lp_build_nir_context *bld_base,
    if (glsl_get_sampler_dim(type) == GLSL_SAMPLER_DIM_MS)
       params.ms_index = get_src(bld_base, instr->src[2]);
    params.img_op = LP_IMG_STORE;
-   params.image_index = var->data.binding;
+   params.image_index = var->data.binding + (indir_index ? 0 : const_index);
+   params.image_index_offset = indir_index;
 
    if (params.target == PIPE_TEXTURE_1D_ARRAY)
       coords[2] = coords[1];
@@ -1142,6 +1152,10 @@ static void visit_atomic_image(struct lp_build_nir_context *bld_base,
    LLVMValueRef in_val = get_src(bld_base, instr->src[3]);
    LLVMValueRef coords[5];
    const struct glsl_type *type = glsl_without_array(var->type);
+   unsigned const_index;
+   LLVMValueRef indir_index;
+   get_deref_offset(bld_base, deref, false, NULL, NULL,
+                    &const_index, &indir_index);
 
    memset(&params, 0, sizeof(params));
 
@@ -1194,7 +1208,8 @@ static void visit_atomic_image(struct lp_build_nir_context *bld_base,
 
    params.outdata = result;
    params.img_op = (instr->intrinsic == nir_intrinsic_image_deref_atomic_comp_swap) ? LP_IMG_ATOMIC_CAS : LP_IMG_ATOMIC;
-   params.image_index = var->data.binding;
+   params.image_index = var->data.binding + (indir_index ? 0 : const_index);
+   params.image_index_offset = indir_index;
 
    bld_base->image_op(bld_base, &params);
 }
@@ -1207,8 +1222,14 @@ static void visit_image_size(struct lp_build_nir_context *bld_base,
    nir_deref_instr *deref = nir_instr_as_deref(instr->src[0].ssa->parent_instr);
    nir_variable *var = nir_deref_instr_get_variable(deref);
    struct lp_sampler_size_query_params params = { 0 };
-   params.texture_unit = var->data.binding;
-   params.target = glsl_sampler_to_pipe(glsl_get_sampler_dim(var->type), glsl_sampler_type_is_array(var->type));
+   unsigned const_index;
+   LLVMValueRef indir_index;
+   const struct glsl_type *type = glsl_without_array(var->type);
+   get_deref_offset(bld_base, deref, false, NULL, NULL,
+                    &const_index, &indir_index);
+   params.texture_unit = var->data.binding + (indir_index ? 0 : const_index);
+   params.texture_unit_offset = indir_index;
+   params.target = glsl_sampler_to_pipe(glsl_get_sampler_dim(type), glsl_sampler_type_is_array(type));
    params.sizes_out = result;
 
    bld_base->image_size(bld_base, &params);
@@ -1221,8 +1242,15 @@ static void visit_image_samples(struct lp_build_nir_context *bld_base,
    nir_deref_instr *deref = nir_instr_as_deref(instr->src[0].ssa->parent_instr);
    nir_variable *var = nir_deref_instr_get_variable(deref);
    struct lp_sampler_size_query_params params = { 0 };
-   params.texture_unit = var->data.binding;
-   params.target = glsl_sampler_to_pipe(glsl_get_sampler_dim(var->type), glsl_sampler_type_is_array(var->type));
+   unsigned const_index;
+   LLVMValueRef indir_index;
+   const struct glsl_type *type = glsl_without_array(var->type);
+   get_deref_offset(bld_base, deref, false, NULL, NULL,
+                    &const_index, &indir_index);
+
+   params.texture_unit = var->data.binding + (indir_index ? 0 : const_index);
+   params.texture_unit_offset = indir_index;
+   params.target = glsl_sampler_to_pipe(glsl_get_sampler_dim(type), glsl_sampler_type_is_array(type));
    params.sizes_out = result;
    params.samples_only = true;
 
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_nir_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_nir_soa.c
index 6444ae2237f..22ac493d2e3 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_nir_soa.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_nir_soa.c
@@ -1225,10 +1225,17 @@ static void emit_image_op(struct lp_build_nir_context *bld_base,
                           struct lp_img_params *params)
 {
    struct lp_build_nir_soa_context *bld = (struct lp_build_nir_soa_context *)bld_base;
+   struct gallivm_state *gallivm = bld_base->base.gallivm;
+
    params->type = bld_base->base.type;
    params->context_ptr = bld->context_ptr;
    params->thread_data_ptr = bld->thread_data_ptr;
    params->exec_mask = mask_vec(bld_base);
+
+   if (params->image_index_offset)
+      params->image_index_offset = LLVMBuildExtractElement(gallivm->builder, params->image_index_offset,
+                                                           lp_build_const_int32(gallivm, 0), "");
+
    bld->image->emit_op(bld->image,
                        bld->bld_base.base.gallivm,
                        params);
@@ -1239,10 +1246,14 @@ static void emit_image_size(struct lp_build_nir_context *bld_base,
                             struct lp_sampler_size_query_params *params)
 {
    struct lp_build_nir_soa_context *bld = (struct lp_build_nir_soa_context *)bld_base;
+   struct gallivm_state *gallivm = bld_base->base.gallivm;
 
    params->int_type = bld_base->int_bld.type;
    params->context_ptr = bld->context_ptr;
 
+   if (params->texture_unit_offset)
+      params->texture_unit_offset = LLVMBuildExtractElement(gallivm->builder, params->texture_unit_offset,
+                                                            lp_build_const_int32(gallivm, 0), "");
    bld->image->emit_size_query(bld->image,
                                bld->bld_base.base.gallivm,
                                params);
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_sample.h b/src/gallium/auxiliary/gallivm/lp_bld_sample.h
index 22fab7445aa..9b42d3faad5 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_sample.h
+++ b/src/gallium/auxiliary/gallivm/lp_bld_sample.h
@@ -140,6 +140,7 @@ struct lp_img_params
 {
    struct lp_type type;
    unsigned image_index;
+   LLVMValueRef image_index_offset;
    unsigned img_op;
    unsigned target;
    LLVMAtomicRMWBinOp op;