From: Nikolay Sivov nsivov@codeweavers.com
Signed-off-by: Nikolay Sivov nsivov@codeweavers.com --- Makefile.am | 1 + libs/vkd3d-shader/hlsl.c | 157 ++++++++++++++++++ libs/vkd3d-shader/hlsl.h | 31 ++++ libs/vkd3d-shader/hlsl.l | 4 +- libs/vkd3d-shader/hlsl.y | 104 ++++++++++-- libs/vkd3d-shader/hlsl_codegen.c | 220 ++++++++++++++++++++++++- tests/hlsl/switch.shader_test | 272 +++++++++++++++++++++++++++++++ 7 files changed, 777 insertions(+), 12 deletions(-) create mode 100644 tests/hlsl/switch.shader_test
diff --git a/Makefile.am b/Makefile.am index 11df76ad7..812269c0b 100644 --- a/Makefile.am +++ b/Makefile.am @@ -164,6 +164,7 @@ vkd3d_shader_tests = \ tests/hlsl/struct-array.shader_test \ tests/hlsl/struct-assignment.shader_test \ tests/hlsl/struct-semantics.shader_test \ + tests/hlsl/switch.shader_test \ tests/hlsl/swizzle-constant-prop.shader_test \ tests/hlsl/swizzle-matrix.shader_test \ tests/hlsl/swizzles.shader_test \ diff --git a/libs/vkd3d-shader/hlsl.c b/libs/vkd3d-shader/hlsl.c index b42e30888..39532bfad 100644 --- a/libs/vkd3d-shader/hlsl.c +++ b/libs/vkd3d-shader/hlsl.c @@ -1343,6 +1343,84 @@ struct hlsl_ir_node *hlsl_new_if(struct hlsl_ctx *ctx, struct hlsl_ir_node *cond return &iff->node; }
+struct hlsl_ir_switch_case *hlsl_new_switch_case(struct hlsl_ctx *ctx, struct hlsl_block *value, + struct hlsl_block *body, const struct vkd3d_shader_location *loc) +{ + struct hlsl_ir_switch_case *c; + struct hlsl_block block; + + if (!(c = hlsl_alloc(ctx, sizeof(*c)))) + return NULL; + + if (value) + { + hlsl_block_init(&block); + hlsl_block_add_block(&block, value); + + c->value = evaluate_static_expression_as_uint(ctx, &block, loc); + + hlsl_block_cleanup(&block); + } + else + { + c->is_default = true; + } + + hlsl_block_init(&c->body); + if (body) + hlsl_block_add_block(&c->body, body); + c->loc = *loc; + + return c; +} + +static bool hlsl_switch_has_case(const struct hlsl_ir_switch_case *check, struct list *cases) +{ + struct hlsl_ir_switch_case *c; + + if (check->is_default) + return false; + + LIST_FOR_EACH_ENTRY(c, cases, struct hlsl_ir_switch_case, entry) + { + if (c->is_default) continue; + if (c->value == check->value && c != check) + return true; + } + + return false; +} + +struct hlsl_ir_node *hlsl_new_switch(struct hlsl_ctx *ctx, struct hlsl_ir_node *selector, + struct list *cases, const struct vkd3d_shader_location *loc) +{ + struct hlsl_ir_switch_case *c; + struct hlsl_ir_switch *s; + bool has_default = false; + + /* Validate for duplicated cases. */ + LIST_FOR_EACH_ENTRY(c, cases, struct hlsl_ir_switch_case, entry) + { + if (has_default && c->is_default) + hlsl_error(ctx, loc, VKD3D_SHADER_ERROR_HLSL_INVALID_SYNTAX, "Found duplicate 'default' statements."); + + if (hlsl_switch_has_case(c, cases)) + hlsl_error(ctx, loc, VKD3D_SHADER_ERROR_HLSL_INVALID_SYNTAX, "Found duplicate 'case' statement."); + + has_default |= c->is_default; + } + + if (!(s = hlsl_alloc(ctx, sizeof(*s)))) + return NULL; + init_node(&s->node, HLSL_IR_SWITCH, NULL, loc); + hlsl_src_from_node(&s->selector, selector); + list_init(&s->cases); + if (cases) + list_move_head(&s->cases, cases); + + return &s->node; +} + struct hlsl_ir_load *hlsl_new_load_index(struct hlsl_ctx *ctx, const struct hlsl_deref *deref, struct hlsl_ir_node *idx, const struct vkd3d_shader_location *loc) { @@ -1805,6 +1883,30 @@ static struct hlsl_ir_node *clone_index(struct hlsl_ctx *ctx, struct clone_instr return dst; }
+static struct hlsl_ir_node *clone_switch(struct hlsl_ctx *ctx, + struct clone_instr_map *map, struct hlsl_ir_switch *s) +{ + struct hlsl_ir_switch_case *c, *d; + struct hlsl_block body; + struct list cases; + + list_init(&cases); + + LIST_FOR_EACH_ENTRY(c, &s->cases, struct hlsl_ir_switch_case, entry) + { + clone_block(ctx, &body, &c->body, map); + + if (!(d = hlsl_new_switch_case(ctx, NULL, &body, &c->loc))) + return NULL; + + d->value = c->value; + d->is_default = c->is_default; + list_add_tail(&cases, &d->entry); + } + + return hlsl_new_switch(ctx, map_instr(map, s->selector.node), &cases, &s->node.loc); +} + static struct hlsl_ir_node *clone_instr(struct hlsl_ctx *ctx, struct clone_instr_map *map, const struct hlsl_ir_node *instr) { @@ -1843,6 +1945,9 @@ static struct hlsl_ir_node *clone_instr(struct hlsl_ctx *ctx, case HLSL_IR_STORE: return clone_store(ctx, map, hlsl_ir_store(instr));
+ case HLSL_IR_SWITCH: + return clone_switch(ctx, map, hlsl_ir_switch(instr)); + case HLSL_IR_SWIZZLE: return clone_swizzle(ctx, map, hlsl_ir_swizzle(instr)); } @@ -2261,6 +2366,7 @@ const char *hlsl_node_type_to_string(enum hlsl_ir_node_type type) [HLSL_IR_RESOURCE_LOAD ] = "HLSL_IR_RESOURCE_LOAD", [HLSL_IR_RESOURCE_STORE] = "HLSL_IR_RESOURCE_STORE", [HLSL_IR_STORE ] = "HLSL_IR_STORE", + [HLSL_IR_SWITCH ] = "HLSL_IR_SWITCH", [HLSL_IR_SWIZZLE ] = "HLSL_IR_SWIZZLE", };
@@ -2685,6 +2791,34 @@ static void dump_ir_index(struct vkd3d_string_buffer *buffer, const struct hlsl_ vkd3d_string_buffer_printf(buffer, "]"); }
+static void dump_ir_switch(struct hlsl_ctx *ctx, struct vkd3d_string_buffer *buffer, const struct hlsl_ir_switch *s) +{ + struct hlsl_ir_switch_case *c; + + vkd3d_string_buffer_printf(buffer, "switch ("); + dump_src(buffer, &s->selector); + vkd3d_string_buffer_printf(buffer, ") {\n"); + + LIST_FOR_EACH_ENTRY(c, &s->cases, struct hlsl_ir_switch_case, entry) + { + if (c->is_default) + { + vkd3d_string_buffer_printf(buffer, " default: {\n"); + } + else + { + vkd3d_string_buffer_printf(buffer, " case %u", c->value); + vkd3d_string_buffer_printf(buffer, ": {\n"); + } + + vkd3d_string_buffer_printf(buffer, " "); + dump_block(ctx, buffer, &c->body); + vkd3d_string_buffer_printf(buffer, " };\n"); + } + + vkd3d_string_buffer_printf(buffer, "}\n"); +} + static void dump_instr(struct hlsl_ctx *ctx, struct vkd3d_string_buffer *buffer, const struct hlsl_ir_node *instr) { if (instr->index) @@ -2740,6 +2874,10 @@ static void dump_instr(struct hlsl_ctx *ctx, struct vkd3d_string_buffer *buffer, dump_ir_store(buffer, hlsl_ir_store(instr)); break;
+ case HLSL_IR_SWITCH: + dump_ir_switch(ctx, buffer, hlsl_ir_switch(instr)); + break; + case HLSL_IR_SWIZZLE: dump_ir_swizzle(buffer, hlsl_ir_swizzle(instr)); break; @@ -2900,6 +3038,21 @@ static void free_ir_swizzle(struct hlsl_ir_swizzle *swizzle) vkd3d_free(swizzle); }
+static void free_ir_switch(struct hlsl_ir_switch *s) +{ + struct hlsl_ir_switch_case *c, *next_c; + + hlsl_src_remove(&s->selector); + + LIST_FOR_EACH_ENTRY_SAFE(c, next_c, &s->cases, struct hlsl_ir_switch_case, entry) + { + hlsl_block_cleanup(&c->body); + list_remove(&c->entry); + vkd3d_free(c); + } + vkd3d_free(s); +} + static void free_ir_index(struct hlsl_ir_index *index) { hlsl_src_remove(&index->val); @@ -2960,6 +3113,10 @@ void hlsl_free_instr(struct hlsl_ir_node *node) case HLSL_IR_SWIZZLE: free_ir_swizzle(hlsl_ir_swizzle(node)); break; + + case HLSL_IR_SWITCH: + free_ir_switch(hlsl_ir_switch(node)); + break; } }
diff --git a/libs/vkd3d-shader/hlsl.h b/libs/vkd3d-shader/hlsl.h index 59c543c7b..fa5f80705 100644 --- a/libs/vkd3d-shader/hlsl.h +++ b/libs/vkd3d-shader/hlsl.h @@ -281,6 +281,7 @@ enum hlsl_ir_node_type HLSL_IR_RESOURCE_STORE, HLSL_IR_STORE, HLSL_IR_SWIZZLE, + HLSL_IR_SWITCH, };
/* Common data for every type of IR instruction node. */ @@ -499,6 +500,22 @@ struct hlsl_ir_loop unsigned int next_index; /* liveness index of the end of the loop */ };
+struct hlsl_ir_switch_case +{ + unsigned int value; + bool is_default; + struct hlsl_block body; + struct list entry; + struct vkd3d_shader_location loc; +}; + +struct hlsl_ir_switch +{ + struct hlsl_ir_node node; + struct hlsl_src selector; + struct list cases; +}; + enum hlsl_ir_expr_op { HLSL_OP0_VOID, @@ -710,6 +727,8 @@ struct hlsl_scope struct hlsl_scope *upper; /* The scope was created for the loop statement. */ bool loop; + /* The scope was created for the switch statement. */ + bool _switch; };
struct hlsl_profile_info @@ -952,6 +971,12 @@ static inline struct hlsl_ir_index *hlsl_ir_index(const struct hlsl_ir_node *nod return CONTAINING_RECORD(node, struct hlsl_ir_index, node); }
+static inline struct hlsl_ir_switch *hlsl_ir_switch(const struct hlsl_ir_node *node) +{ + assert(node->type == HLSL_IR_SWITCH); + return CONTAINING_RECORD(node, struct hlsl_ir_switch, node); +} + static inline void hlsl_block_init(struct hlsl_block *block) { list_init(&block->instrs); @@ -1218,6 +1243,10 @@ struct hlsl_ir_node *hlsl_new_unary_expr(struct hlsl_ctx *ctx, enum hlsl_ir_expr struct hlsl_ir_var *hlsl_new_var(struct hlsl_ctx *ctx, const char *name, struct hlsl_type *type, const struct vkd3d_shader_location *loc, const struct hlsl_semantic *semantic, unsigned int modifiers, const struct hlsl_reg_reservation *reg_reservation); +struct hlsl_ir_switch_case *hlsl_new_switch_case(struct hlsl_ctx *ctx, struct hlsl_block *value, + struct hlsl_block *body, const struct vkd3d_shader_location *loc); +struct hlsl_ir_node *hlsl_new_switch(struct hlsl_ctx *ctx, struct hlsl_ir_node *selector, + struct list *cases, const struct vkd3d_shader_location *loc);
void hlsl_error(struct hlsl_ctx *ctx, const struct vkd3d_shader_location *loc, enum vkd3d_shader_error error, const char *fmt, ...) VKD3D_PRINTF_FUNC(4, 5); @@ -1272,6 +1301,8 @@ bool hlsl_fold_constant_exprs(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr, bool hlsl_fold_constant_swizzles(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr, void *context); bool hlsl_transform_ir(struct hlsl_ctx *ctx, bool (*func)(struct hlsl_ctx *ctx, struct hlsl_ir_node *, void *), struct hlsl_block *block, void *context); +unsigned int evaluate_static_expression_as_uint(struct hlsl_ctx *ctx, struct hlsl_block *block, + const struct vkd3d_shader_location *loc);
bool hlsl_sm1_register_from_semantic(struct hlsl_ctx *ctx, const struct hlsl_semantic *semantic, bool output, D3DSHADER_PARAM_REGISTER_TYPE *type, unsigned int *reg); diff --git a/libs/vkd3d-shader/hlsl.l b/libs/vkd3d-shader/hlsl.l index 90abd64a3..d457c6622 100644 --- a/libs/vkd3d-shader/hlsl.l +++ b/libs/vkd3d-shader/hlsl.l @@ -46,7 +46,7 @@ static void update_location(struct hlsl_ctx *ctx, YYLTYPE *loc);
%x pp pp_line pp_pragma pp_ignore
-RESERVED1 auto|case|catch|char|class|const_cast|default|delete|dynamic_cast|enum +RESERVED1 auto|catch|char|class|const_cast|delete|dynamic_cast|enum RESERVED2 explicit|friend|goto|long|mutable|new|operator|private|protected|public RESERVED3 reinterpret_cast|short|signed|sizeof|static_cast|template|this|throw|try RESERVED4 typename|union|unsigned|using|virtual @@ -73,6 +73,7 @@ ANY (.) BlendState {return KW_BLENDSTATE; } break {return KW_BREAK; } Buffer {return KW_BUFFER; } +case {return KW_CASE; } cbuffer {return KW_CBUFFER; } centroid {return KW_CENTROID; } compile {return KW_COMPILE; } @@ -80,6 +81,7 @@ const {return KW_CONST; } continue {return KW_CONTINUE; } DepthStencilState {return KW_DEPTHSTENCILSTATE; } DepthStencilView {return KW_DEPTHSTENCILVIEW; } +default {return KW_DEFAULT; } discard {return KW_DISCARD; } do {return KW_DO; } double {return KW_DOUBLE; } diff --git a/libs/vkd3d-shader/hlsl.y b/libs/vkd3d-shader/hlsl.y index ba738473f..625b260e6 100644 --- a/libs/vkd3d-shader/hlsl.y +++ b/libs/vkd3d-shader/hlsl.y @@ -1154,7 +1154,7 @@ static struct hlsl_block *make_block(struct hlsl_ctx *ctx, struct hlsl_ir_node * return block; }
-static unsigned int evaluate_static_expression_as_uint(struct hlsl_ctx *ctx, struct hlsl_block *block, +unsigned int evaluate_static_expression_as_uint(struct hlsl_ctx *ctx, struct hlsl_block *block, const struct vkd3d_shader_location *loc) { struct hlsl_ir_constant *constant; @@ -1180,6 +1180,7 @@ static unsigned int evaluate_static_expression_as_uint(struct hlsl_ctx *ctx, str case HLSL_IR_RESOURCE_LOAD: case HLSL_IR_RESOURCE_STORE: case HLSL_IR_STORE: + case HLSL_IR_SWITCH: hlsl_error(ctx, &node->loc, VKD3D_SHADER_ERROR_HLSL_INVALID_SYNTAX, "Expected literal expression."); } @@ -4633,12 +4634,20 @@ static void validate_texture_format_type(struct hlsl_ctx *ctx, struct hlsl_type } }
-static struct hlsl_scope *get_loop_scope(struct hlsl_scope *scope) +static bool is_continue_allowed(const struct hlsl_scope *scope) { if (scope->loop) - return scope; + return true; + + return scope->upper ? is_continue_allowed(scope->upper) : false; +} + +static bool is_break_allowed(const struct hlsl_scope *scope) +{ + if (scope->loop || scope->_switch) + return true;
- return scope->upper ? get_loop_scope(scope->upper) : NULL; + return scope->upper ? is_break_allowed(scope->upper) : false; }
} @@ -4684,12 +4693,14 @@ static struct hlsl_scope *get_loop_scope(struct hlsl_scope *scope) %token KW_BLENDSTATE %token KW_BREAK %token KW_BUFFER +%token KW_CASE %token KW_CBUFFER %token KW_CENTROID %token KW_COLUMN_MAJOR %token KW_COMPILE %token KW_CONST %token KW_CONTINUE +%token KW_DEFAULT %token KW_DEPTHSTENCILSTATE %token KW_DEPTHSTENCILVIEW %token KW_DISCARD @@ -4794,6 +4805,8 @@ static struct hlsl_scope *get_loop_scope(struct hlsl_scope *scope) %type <list> type_specs %type <list> variables_def %type <list> variables_def_typed +%type <list> switch_case +%type <list> switch_cases
%token <name> VAR_IDENTIFIER %token <name> NEW_IDENTIFIER @@ -4836,6 +4849,7 @@ static struct hlsl_scope *get_loop_scope(struct hlsl_scope *scope) %type <block> statement %type <block> statement_list %type <block> struct_declaration_without_vars +%type <block> switch_statement %type <block> unary_expr
%type <boolval> boolean @@ -5355,6 +5369,13 @@ loop_scope_start: ctx->cur_scope->loop = true; }
+switch_scope_start: + %empty + { + hlsl_push_scope(ctx); + ctx->cur_scope->_switch = true; + } + var_identifier: VAR_IDENTIFIER | NEW_IDENTIFIER @@ -6173,18 +6194,17 @@ statement: | jump_statement | selection_statement | loop_statement + | switch_statement
jump_statement: KW_BREAK ';' { struct hlsl_ir_node *jump;
- /* TODO: allow 'break' in the 'switch' statements. */ - - if (!get_loop_scope(ctx->cur_scope)) + if (!is_break_allowed(ctx->cur_scope)) { hlsl_error(ctx, &@1, VKD3D_SHADER_ERROR_HLSL_INVALID_SYNTAX, - "The 'break' statement must be used inside of a loop."); + "The 'break' statement must be used inside of a loop or a switch."); }
if (!($$ = make_empty_block(ctx))) @@ -6196,9 +6216,8 @@ jump_statement: | KW_CONTINUE ';' { struct hlsl_ir_node *jump; - struct hlsl_scope *scope;
- if (!(scope = get_loop_scope(ctx->cur_scope))) + if (!is_continue_allowed(ctx->cur_scope)) { hlsl_error(ctx, &@1, VKD3D_SHADER_ERROR_HLSL_INVALID_SYNTAX, "The 'continue' statement must be used inside of a loop."); @@ -6321,6 +6340,71 @@ loop_statement: hlsl_pop_scope(ctx); }
+switch_statement: + attribute_list_optional switch_scope_start KW_SWITCH '(' expr ')' '{' switch_cases '}' + { + struct hlsl_ir_node *selector = node_from_block($5); + struct hlsl_ir_node *s; + + if (!(selector = add_implicit_conversion(ctx, $5, selector, hlsl_get_scalar_type(ctx, HLSL_TYPE_UINT), &@5))) + YYABORT; + + if (!(s = hlsl_new_switch(ctx, selector, $8, &@3))) + YYABORT; + vkd3d_free($8); + $$ = $5; + hlsl_block_add_instr($$, s); + + hlsl_pop_scope(ctx); + } + +switch_case: + KW_CASE expr ':' statement_list + { + struct hlsl_ir_switch_case *c; + + if (!(c = hlsl_new_switch_case(ctx, $2, $4, &@2))) + YYABORT; + $$ = &c->entry; + } + | KW_CASE expr ':' + { + struct hlsl_ir_switch_case *c; + + if (!(c = hlsl_new_switch_case(ctx, $2, NULL, &@2))) + YYABORT; + $$ = &c->entry; + } + | KW_DEFAULT ':' statement_list + { + struct hlsl_ir_switch_case *c; + + if (!(c = hlsl_new_switch_case(ctx, NULL, $3, &@1))) + YYABORT; + $$ = &c->entry; + } + | KW_DEFAULT ':' + { + struct hlsl_ir_switch_case *c; + + if (!(c = hlsl_new_switch_case(ctx, NULL, NULL, &@1))) + YYABORT; + $$ = &c->entry; + } + +switch_cases: + switch_case + { + if (!($$ = make_empty_list(ctx))) + YYABORT; + list_add_head($$, $1); + } + | switch_cases switch_case + { + $$ = $1; + list_add_tail($$, $2); + } + expr_optional: %empty { diff --git a/libs/vkd3d-shader/hlsl_codegen.c b/libs/vkd3d-shader/hlsl_codegen.c index 5c816e895..8fa6233f9 100644 --- a/libs/vkd3d-shader/hlsl_codegen.c +++ b/libs/vkd3d-shader/hlsl_codegen.c @@ -575,7 +575,19 @@ bool hlsl_transform_ir(struct hlsl_ctx *ctx, bool (*func)(struct hlsl_ctx *ctx, progress |= hlsl_transform_ir(ctx, func, &iff->else_block, context); } else if (instr->type == HLSL_IR_LOOP) + { progress |= hlsl_transform_ir(ctx, func, &hlsl_ir_loop(instr)->body, context); + } + else if (instr->type == HLSL_IR_SWITCH) + { + struct hlsl_ir_switch *s = hlsl_ir_switch(instr); + struct hlsl_ir_switch_case *c; + + LIST_FOR_EACH_ENTRY(c, &s->cases, struct hlsl_ir_switch_case, entry) + { + progress |= hlsl_transform_ir(ctx, func, &c->body, context); + } + }
progress |= func(ctx, instr, context); } @@ -835,6 +847,28 @@ static bool lower_return(struct hlsl_ctx *ctx, struct hlsl_ir_function_decl *fun } } } + else if (instr->type == HLSL_IR_SWITCH) + { + struct hlsl_ir_switch *s = hlsl_ir_switch(instr); + struct hlsl_ir_switch_case *c; + + LIST_FOR_EACH_ENTRY(c, &s->cases, struct hlsl_ir_switch_case, entry) + { + has_early_return |= lower_return(ctx, func, &c->body, true); + } + + if (has_early_return) + { + /* If we're in a loop, we don't need to do anything here. We + * turned the return into a break, and that will already skip + * anything that comes after this "if" block. */ + if (!in_loop) + { + cf_instr = instr; + break; + } + } + } }
if (return_instr) @@ -1639,6 +1673,19 @@ static void copy_propagation_invalidate_from_block(struct hlsl_ctx *ctx, struct break; }
+ case HLSL_IR_SWITCH: + { + struct hlsl_ir_switch *s = hlsl_ir_switch(instr); + struct hlsl_ir_switch_case *c; + + LIST_FOR_EACH_ENTRY(c, &s->cases, struct hlsl_ir_switch_case, entry) + { + copy_propagation_invalidate_from_block(ctx, state, &c->body); + } + + break; + } + default: break; } @@ -1687,6 +1734,28 @@ static bool copy_propagation_process_loop(struct hlsl_ctx *ctx, struct hlsl_ir_l return progress; }
+static bool copy_propagation_process_switch(struct hlsl_ctx *ctx, struct hlsl_ir_switch *s, + struct copy_propagation_state *state) +{ + struct copy_propagation_state inner_state; + struct hlsl_ir_switch_case *c; + bool progress = false; + + LIST_FOR_EACH_ENTRY(c, &s->cases, struct hlsl_ir_switch_case, entry) + { + copy_propagation_state_init(ctx, &inner_state, state); + progress |= copy_propagation_transform_block(ctx, &c->body, &inner_state); + copy_propagation_state_destroy(&inner_state); + } + + LIST_FOR_EACH_ENTRY(c, &s->cases, struct hlsl_ir_switch_case, entry) + { + copy_propagation_invalidate_from_block(ctx, state, &c->body); + } + + return progress; +} + static bool copy_propagation_transform_block(struct hlsl_ctx *ctx, struct hlsl_block *block, struct copy_propagation_state *state) { @@ -1725,7 +1794,15 @@ static bool copy_propagation_transform_block(struct hlsl_ctx *ctx, struct hlsl_b progress |= copy_propagation_process_loop(ctx, hlsl_ir_loop(instr), state); break;
- default: + case HLSL_IR_SWITCH: + progress |= copy_propagation_process_switch(ctx, hlsl_ir_switch(instr), state); + break; + + case HLSL_IR_CALL: + case HLSL_IR_CONSTANT: + case HLSL_IR_EXPR: + case HLSL_IR_INDEX: + case HLSL_IR_JUMP: break; } } @@ -2094,6 +2171,44 @@ static bool remove_trivial_conditional_branches(struct hlsl_ctx *ctx, struct hls return true; }
+static bool validate_switch_cases(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr, void *context) +{ + struct hlsl_ir_switch_case *c; + bool terminal_break = false; + struct hlsl_ir_node *node; + struct hlsl_ir_jump *jump; + struct hlsl_ir_switch *s; + + if (instr->type != HLSL_IR_SWITCH) + return false; + s = hlsl_ir_switch(instr); + + LIST_FOR_EACH_ENTRY(c, &s->cases, struct hlsl_ir_switch_case, entry) + { + if (list_empty(&c->body.instrs)) + continue; + + terminal_break = false; + node = LIST_ENTRY(list_tail(&c->body.instrs), struct hlsl_ir_node, entry); + if (node->type == HLSL_IR_JUMP) + { + jump = hlsl_ir_jump(node); + terminal_break = jump->type == HLSL_IR_JUMP_BREAK; + } + + if (!terminal_break) + break; + } + + if (!terminal_break) + { + hlsl_error(ctx, &instr->loc, VKD3D_SHADER_ERROR_HLSL_INVALID_SYNTAX, + "Switch case statement should end with a 'break'."); + } + + return true; +} + static bool lower_nonconstant_vector_derefs(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr, struct hlsl_block *block) { struct hlsl_ir_node *idx; @@ -2929,6 +3044,7 @@ static bool dce(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr, void *context) case HLSL_IR_JUMP: case HLSL_IR_LOOP: case HLSL_IR_RESOURCE_STORE: + case HLSL_IR_SWITCH: break; }
@@ -2956,6 +3072,16 @@ static unsigned int index_instructions(struct hlsl_block *block, unsigned int in index = index_instructions(&hlsl_ir_loop(instr)->body, index); hlsl_ir_loop(instr)->next_index = index; } + else if (instr->type == HLSL_IR_SWITCH) + { + struct hlsl_ir_switch *s = hlsl_ir_switch(instr); + struct hlsl_ir_switch_case *c; + + LIST_FOR_EACH_ENTRY(c, &s->cases, struct hlsl_ir_switch_case, entry) + { + index = index_instructions(&c->body, index); + } + } }
return index; @@ -3173,6 +3299,16 @@ static void compute_liveness_recurse(struct hlsl_block *block, unsigned int loop jump->condition.node->last_read = last_read; break; } + case HLSL_IR_SWITCH: + { + struct hlsl_ir_switch *s = hlsl_ir_switch(instr); + struct hlsl_ir_switch_case *c; + + LIST_FOR_EACH_ENTRY(c, &s->cases, struct hlsl_ir_switch_case, entry) + compute_liveness_recurse(&c->body, loop_first, loop_last); + s->selector.node->last_read = last_read; + break; + } case HLSL_IR_CONSTANT: break; } @@ -3524,6 +3660,18 @@ static void allocate_temp_registers_recurse(struct hlsl_ctx *ctx, break; }
+ case HLSL_IR_SWITCH: + { + struct hlsl_ir_switch *s = hlsl_ir_switch(instr); + struct hlsl_ir_switch_case *c; + + LIST_FOR_EACH_ENTRY(c, &s->cases, struct hlsl_ir_switch_case, entry) + { + allocate_temp_registers_recurse(ctx, &c->body, allocator); + } + break; + } + default: break; } @@ -3633,6 +3781,18 @@ static void allocate_const_registers_recurse(struct hlsl_ctx *ctx, break; }
+ case HLSL_IR_SWITCH: + { + struct hlsl_ir_switch *s = hlsl_ir_switch(instr); + struct hlsl_ir_switch_case *c; + + LIST_FOR_EACH_ENTRY(c, &s->cases, struct hlsl_ir_switch_case, entry) + { + allocate_const_registers_recurse(ctx, &c->body, allocator); + } + break; + } + default: break; } @@ -4335,6 +4495,62 @@ static bool type_has_object_components(struct hlsl_type *type) return false; }
+static void remove_unreachable_code(struct hlsl_ctx *ctx, struct hlsl_block *body) +{ + struct hlsl_ir_node *instr, *next; + struct hlsl_block block; + struct list *start; + + LIST_FOR_EACH_ENTRY_SAFE(instr, next, &body->instrs, struct hlsl_ir_node, entry) + { + if (instr->type == HLSL_IR_IF) + { + struct hlsl_ir_if *iff = hlsl_ir_if(instr); + + remove_unreachable_code(ctx, &iff->then_block); + remove_unreachable_code(ctx, &iff->else_block); + } + else if (instr->type == HLSL_IR_LOOP) + { + struct hlsl_ir_loop *loop = hlsl_ir_loop(instr); + + remove_unreachable_code(ctx, &loop->body); + } + else if (instr->type == HLSL_IR_SWITCH) + { + struct hlsl_ir_switch *s = hlsl_ir_switch(instr); + struct hlsl_ir_switch_case *c; + + LIST_FOR_EACH_ENTRY(c, &s->cases, struct hlsl_ir_switch_case, entry) + { + remove_unreachable_code(ctx, &c->body); + } + } + } + + /* Remove instructions past unconditional break. */ + LIST_FOR_EACH_ENTRY(instr, &body->instrs, struct hlsl_ir_node, entry) + { + struct hlsl_ir_jump *jump; + + if (instr->type != HLSL_IR_JUMP) + continue; + + jump = hlsl_ir_jump(instr); + if (jump->type != HLSL_IR_JUMP_BREAK) + continue; + + if (!(start = list_next(&body->instrs, &instr->entry))) + break; + + hlsl_block_init(&block); + list_move_slice_tail(&block.instrs, start, list_tail(&body->instrs)); + hlsl_block_cleanup(&block); + + break; + } +} + int hlsl_emit_bytecode(struct hlsl_ctx *ctx, struct hlsl_ir_function_decl *entry_func, enum vkd3d_shader_target_type target_type, struct vkd3d_shader_code *out) { @@ -4452,6 +4668,8 @@ int hlsl_emit_bytecode(struct hlsl_ctx *ctx, struct hlsl_ir_function_decl *entry progress |= hlsl_transform_ir(ctx, remove_trivial_conditional_branches, body, NULL); } while (progress); + remove_unreachable_code(ctx, body); + hlsl_transform_ir(ctx, validate_switch_cases, body, NULL);
lower_ir(ctx, lower_nonconstant_vector_derefs, body); lower_ir(ctx, lower_casts_to_bool, body); diff --git a/tests/hlsl/switch.shader_test b/tests/hlsl/switch.shader_test new file mode 100644 index 000000000..63a58d41f --- /dev/null +++ b/tests/hlsl/switch.shader_test @@ -0,0 +1,272 @@ +[require] +shader model >= 4.0 + +[pixel shader todo] +uint4 v; + +float4 main() : sv_target +{ + switch (v.x) + { + case 0: + return 3.0; + case 1: + return 4.0; + default: + return 5.0; + } +} + +[test] +uniform 0 uint4 3 0 0 0 +todo draw quad +todo probe all rgba (5.0, 5.0, 5.0, 5.0) +uniform 0 uint4 1 0 0 0 +todo draw quad +todo probe all rgba (4.0, 4.0, 4.0, 4.0) +uniform 0 uint4 0 0 0 0 +todo draw quad +todo probe all rgba (3.0, 3.0, 3.0, 3.0) + +% falling through is only supported for empty case statements +[pixel shader todo] +uint4 v; + +float4 main() : sv_target +{ + float4 c = {1.0, 2.0, 3.0, 4.0}; + + switch (v.x) + { + case 0: + case 1: + c.x += 0.1f; + break; + } + + return c; +} + +[test] +uniform 0 uint4 2 0 0 0 +todo draw quad +todo probe all rgba (1.0, 2.0, 3.0, 4.0) +uniform 0 uint4 1 0 0 0 +todo draw quad +todo probe all rgba (1.1, 2.0, 3.0, 4.0) +uniform 0 uint4 0 0 0 0 +todo draw quad +todo probe all rgba (1.1, 2.0, 3.0, 4.0) + +% case value evaluation +[pixel shader todo] +uint4 v; + +float4 main() : sv_target +{ + float4 c = {1.0, 2.0, 3.0, 4.0}; + + switch (v.x) + { + case 1+1: + c += 0.1f; + break; + case 0: + c += 0.2f; + break; + } + + return c; +} + +[test] +uniform 0 uint4 2 0 0 0 +todo draw quad +todo probe all rgba (1.1, 2.1, 3.1, 4.1) +uniform 0 uint4 1 0 0 0 +todo draw quad +todo probe all rgba (1.0, 2.0, 3.0, 4.0) + +% floats are accepted +[pixel shader todo] +uint4 v; + +float4 main() : sv_target +{ + float4 c = {1.0, 2.0, 3.0, 4.0}; + + switch (v.x) + { + case 2.1f: + c += 0.1f; + break; + case 0.9f: + c += 0.2f; + break; + } + + return c; +} + +[test] +uniform 0 uint4 2 0 0 0 +todo draw quad +todo probe all rgba (1.1, 2.1, 3.1, 4.1) +uniform 0 uint4 1 0 0 0 +todo draw quad +todo probe all rgba (1.0, 2.0, 3.0, 4.0) + +[pixel shader fail] +uint4 v; + +float4 main() : sv_target +{ + float4 c = {1.0, 2.0, 3.0, 4.0}; + uint a = 1; + + switch (v.x) + { + case 1+a: + c += 0.1f; + break; + case 0: + c += 0.2f; + break; + } + + return c; +} + +% duplicate cases +[pixel shader fail] +uint4 v; + +float4 main() : sv_target +{ + float4 c = {1.0, 2.0, 3.0, 4.0}; + + switch (v.x) + { + case 2: + c += 0.1f; + break; + case 1+1: + c += 0.2f; + break; + } + + return c; +} + +[pixel shader fail] +uint4 v; + +% multiple default cases +float4 main() : sv_target +{ + float4 c = {1.0, 2.0, 3.0, 4.0}; + + switch (v.x) + { + default: + case 2: + c += 0.1f; + break; + case 1: + c += 0.2f; + break; + default: + break; + } + + return c; +} + +% unterminated cases +[pixel shader fail] +uint4 v; + +float4 main() : sv_target +{ + float4 c = {1.0, 2.0, 3.0, 4.0}; + + switch (v.x) + { + case 0: + c += 0.1f; + case 1: + c += 0.2f; + break; + } + + return c; +} + +% more complicated breaks +[pixel shader todo] +uint4 v; + +float4 main() : sv_target +{ + float4 c = {1.0, 2.0, 3.0, 4.0}; + + switch (v.x) + { + case 2: + c += 0.1f; + if (true) break; + c = 9.0f; + case 1: + if (false) break; + c += 0.2f; + break; + default: + case 0: + break; + } + + return c; +} + +[test] +uniform 0 uint4 2 0 0 0 +todo draw quad +todo probe all rgba (1.1, 2.1, 3.1, 4.1) +uniform 0 uint4 1 0 0 0 +todo draw quad +todo probe all rgba (1.2, 2.2, 3.2, 4.2) +uniform 0 uint4 0 0 0 0 +todo draw quad +todo probe all rgba (1.0, 2.0, 3.0, 4.0) + +% switch breaks within a loop +[pixel shader todo] +uint4 v; + +float4 main() : sv_target +{ + float4 c = {1.0f, 2.0f, 3.0f, 4.0f}; + + for (int i = 0; i < 4; ++i) + { + switch (v.x) + { + case 2: + c += 1.0f; + break; + case 1: + c -= 1.0f; + break; + default: + case 0: + break; + } + } + + return c; +} + +[test] +uniform 0 uint4 2 0 0 0 +todo draw quad +todo probe all rgba (5.0, 6.0, 7.0, 8.0)