Victor Chiletto : vkd3d-shader/hlsl: Parse loop and unroll loop attributes.
Module: vkd3d Branch: master Commit: 5bc56d43bb896c680f69bb3e9802ee1f940533a6 URL: https://gitlab.winehq.org/wine/vkd3d/-/commit/5bc56d43bb896c680f69bb3e9802ee... Author: Victor Chiletto <vchiletto(a)codeweavers.com> Date: Wed Apr 10 14:13:51 2024 -0300 vkd3d-shader/hlsl: Parse loop and unroll loop attributes. Based on a patch by Nikolay Sivov. Co-authored-by: Nikolay Sivov <nsivov(a)codeweavers.com> --- libs/vkd3d-shader/hlsl.c | 8 ++++++-- libs/vkd3d-shader/hlsl.h | 11 ++++++++++- libs/vkd3d-shader/hlsl.y | 26 +++++++++++++++++++------- 3 files changed, 35 insertions(+), 10 deletions(-) diff --git a/libs/vkd3d-shader/hlsl.c b/libs/vkd3d-shader/hlsl.c index a157590c..35ab880d 100644 --- a/libs/vkd3d-shader/hlsl.c +++ b/libs/vkd3d-shader/hlsl.c @@ -1810,7 +1810,8 @@ struct hlsl_ir_node *hlsl_new_jump(struct hlsl_ctx *ctx, enum hlsl_ir_jump_type } struct hlsl_ir_node *hlsl_new_loop(struct hlsl_ctx *ctx, - struct hlsl_block *block, const struct vkd3d_shader_location *loc) + struct hlsl_block *block, enum hlsl_ir_loop_unroll_type unroll_type, + unsigned int unroll_limit, const struct vkd3d_shader_location *loc) { struct hlsl_ir_loop *loop; @@ -1819,6 +1820,9 @@ struct hlsl_ir_node *hlsl_new_loop(struct hlsl_ctx *ctx, init_node(&loop->node, HLSL_IR_LOOP, NULL, loc); hlsl_block_init(&loop->body); hlsl_block_add_block(&loop->body, block); + + loop->unroll_type = unroll_type; + loop->unroll_limit = unroll_limit; return &loop->node; } @@ -1980,7 +1984,7 @@ static struct hlsl_ir_node *clone_loop(struct hlsl_ctx *ctx, struct clone_instr_ if (!clone_block(ctx, &body, &src->body, map)) return NULL; - if (!(dst = hlsl_new_loop(ctx, &body, &src->node.loc))) + if (!(dst = hlsl_new_loop(ctx, &body, src->unroll_type, src->unroll_limit, &src->node.loc))) { hlsl_block_cleanup(&body); return NULL; diff --git a/libs/vkd3d-shader/hlsl.h b/libs/vkd3d-shader/hlsl.h index 4a17818e..4262d36c 100644 --- a/libs/vkd3d-shader/hlsl.h +++ b/libs/vkd3d-shader/hlsl.h @@ -602,12 +602,21 @@ struct hlsl_ir_if struct hlsl_block else_block; }; +enum hlsl_ir_loop_unroll_type +{ + HLSL_IR_LOOP_UNROLL, + HLSL_IR_LOOP_FORCE_UNROLL, + HLSL_IR_LOOP_FORCE_LOOP +}; + struct hlsl_ir_loop { struct hlsl_ir_node node; /* loop condition is stored in the body (as "if (!condition) break;") */ struct hlsl_block body; unsigned int next_index; /* liveness index of the end of the loop */ + unsigned int unroll_limit; + enum hlsl_ir_loop_unroll_type unroll_type; }; struct hlsl_ir_switch_case @@ -1390,7 +1399,7 @@ bool hlsl_index_chain_has_resource_access(struct hlsl_ir_index *index); struct hlsl_ir_node *hlsl_new_index(struct hlsl_ctx *ctx, struct hlsl_ir_node *val, struct hlsl_ir_node *idx, const struct vkd3d_shader_location *loc); struct hlsl_ir_node *hlsl_new_loop(struct hlsl_ctx *ctx, - struct hlsl_block *block, const struct vkd3d_shader_location *loc); + struct hlsl_block *block, enum hlsl_ir_loop_unroll_type unroll_type, unsigned int unroll_limit, const struct vkd3d_shader_location *loc); struct hlsl_ir_node *hlsl_new_resource_load(struct hlsl_ctx *ctx, const struct hlsl_resource_load_params *params, const struct vkd3d_shader_location *loc); struct hlsl_ir_node *hlsl_new_resource_store(struct hlsl_ctx *ctx, const struct hlsl_deref *resource, diff --git a/libs/vkd3d-shader/hlsl.y b/libs/vkd3d-shader/hlsl.y index a3249942..61a98e7a 100644 --- a/libs/vkd3d-shader/hlsl.y +++ b/libs/vkd3d-shader/hlsl.y @@ -655,8 +655,9 @@ static struct hlsl_block *create_loop(struct hlsl_ctx *ctx, enum loop_type type, const struct parse_attribute_list *attributes, struct hlsl_block *init, struct hlsl_block *cond, struct hlsl_block *iter, struct hlsl_block *body, const struct vkd3d_shader_location *loc) { + enum hlsl_ir_loop_unroll_type unroll_type = HLSL_IR_LOOP_UNROLL; + unsigned int i, unroll_limit = 0; struct hlsl_ir_node *loop; - unsigned int i; if (attribute_list_has_duplicates(attributes)) hlsl_error(ctx, loc, VKD3D_SHADER_ERROR_HLSL_INVALID_SYNTAX, "Found duplicate attribute."); @@ -669,18 +670,29 @@ static struct hlsl_block *create_loop(struct hlsl_ctx *ctx, enum loop_type type, const struct hlsl_attribute *attr = attributes->attrs[i]; if (!strcmp(attr->name, "unroll")) { - if (attr->args_count) + if (attr->args_count > 1) { - hlsl_error(ctx, loc, VKD3D_SHADER_ERROR_HLSL_NOT_IMPLEMENTED, "Unroll attribute with iteration count."); + hlsl_warning(ctx, &attr->loc, VKD3D_SHADER_WARNING_HLSL_IGNORED_ATTRIBUTE, + "Ignoring 'unroll' attribute with more than 1 argument."); + continue; } - else + + if (attr->args_count == 1) { - hlsl_warning(ctx, loc, VKD3D_SHADER_ERROR_HLSL_NOT_IMPLEMENTED, "Loop unrolling is not implemented."); + struct hlsl_block expr; + hlsl_block_init(&expr); + if (!hlsl_clone_block(ctx, &expr, &attr->instrs)) + return NULL; + + unroll_limit = evaluate_static_expression_as_uint(ctx, &expr, loc); + hlsl_block_cleanup(&expr); } + + unroll_type = HLSL_IR_LOOP_FORCE_UNROLL; } else if (!strcmp(attr->name, "loop")) { - /* TODO: this attribute will be used to disable unrolling, once it's implememented. */ + unroll_type = HLSL_IR_LOOP_FORCE_LOOP; } else if (!strcmp(attr->name, "fastopt") || !strcmp(attr->name, "allow_uav_condition")) @@ -709,7 +721,7 @@ static struct hlsl_block *create_loop(struct hlsl_ctx *ctx, enum loop_type type, else list_move_head(&body->instrs, &cond->instrs); - if (!(loop = hlsl_new_loop(ctx, body, loc))) + if (!(loop = hlsl_new_loop(ctx, body, unroll_type, unroll_limit, loc))) goto oom; hlsl_block_add_instr(init, loop);
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Alexandre Julliard