X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fglsl%2Fast_to_hir.cpp;h=5157661b39eca7c6e15bc58a3157026ed1bfd618;hb=2acc7193743199701f8f6d1877a59ece0ec4fa5b;hp=f4dfc4ce34cf11fd066e44cda45d3806ffd305bb;hpb=eb7a71dea78152142b456f29e4881c4d3aeb56b6;p=mesa.git diff --git a/src/glsl/ast_to_hir.cpp b/src/glsl/ast_to_hir.cpp index f4dfc4ce34c..5157661b39e 100644 --- a/src/glsl/ast_to_hir.cpp +++ b/src/glsl/ast_to_hir.cpp @@ -57,6 +57,10 @@ #include "program/hash_table.h" #include "ir.h" +static void +detect_conflicting_assignments(struct _mesa_glsl_parse_state *state, + exec_list *instructions); + void _mesa_ast_to_hir(exec_list *instructions, struct _mesa_glsl_parse_state *state) { @@ -87,6 +91,7 @@ _mesa_ast_to_hir(exec_list *instructions, struct _mesa_glsl_parse_state *state) ast->hir(instructions, state); detect_recursion_unlinked(state, instructions); + detect_conflicting_assignments(state, instructions); state->toplevel_ir = NULL; } @@ -672,6 +677,10 @@ do_assignment(exec_list *instructions, struct _mesa_glsl_parse_state *state, void *ctx = state; bool error_emitted = (lhs->type->is_error() || rhs->type->is_error()); + ir_variable *lhs_var = lhs->variable_referenced(); + if (lhs_var) + lhs_var->assigned = true; + if (!error_emitted) { if (non_lvalue_description != NULL) { _mesa_glsl_error(&lhs_loc, state, @@ -751,13 +760,11 @@ do_assignment(exec_list *instructions, struct _mesa_glsl_parse_state *state, ir_var_temporary); ir_dereference_variable *deref_var = new(ctx) ir_dereference_variable(var); instructions->push_tail(var); - instructions->push_tail(new(ctx) ir_assignment(deref_var, - rhs, - NULL)); + instructions->push_tail(new(ctx) ir_assignment(deref_var, rhs)); deref_var = new(ctx) ir_dereference_variable(var); if (!error_emitted) - instructions->push_tail(new(ctx) ir_assignment(lhs, deref_var, NULL)); + instructions->push_tail(new(ctx) ir_assignment(lhs, deref_var)); return new(ctx) ir_dereference_variable(var); } @@ -774,7 +781,7 @@ get_lvalue_copy(exec_list *instructions, ir_rvalue *lvalue) var->mode = ir_var_auto; instructions->push_tail(new(ctx) ir_assignment(new(ctx) ir_dereference_variable(var), - lvalue, NULL)); + lvalue)); return new(ctx) ir_dereference_variable(var); } @@ -1214,12 +1221,12 @@ ast_expression::hir(exec_list *instructions, stmt->then_instructions.append_list(&rhs_instructions); ir_dereference *const then_deref = new(ctx) ir_dereference_variable(tmp); ir_assignment *const then_assign = - new(ctx) ir_assignment(then_deref, op[1], NULL); + new(ctx) ir_assignment(then_deref, op[1]); stmt->then_instructions.push_tail(then_assign); ir_dereference *const else_deref = new(ctx) ir_dereference_variable(tmp); ir_assignment *const else_assign = - new(ctx) ir_assignment(else_deref, new(ctx) ir_constant(false), NULL); + new(ctx) ir_assignment(else_deref, new(ctx) ir_constant(false)); stmt->else_instructions.push_tail(else_assign); result = new(ctx) ir_dereference_variable(tmp); @@ -1249,13 +1256,13 @@ ast_expression::hir(exec_list *instructions, ir_dereference *const then_deref = new(ctx) ir_dereference_variable(tmp); ir_assignment *const then_assign = - new(ctx) ir_assignment(then_deref, new(ctx) ir_constant(true), NULL); + new(ctx) ir_assignment(then_deref, new(ctx) ir_constant(true)); stmt->then_instructions.push_tail(then_assign); stmt->else_instructions.append_list(&rhs_instructions); ir_dereference *const else_deref = new(ctx) ir_dereference_variable(tmp); ir_assignment *const else_assign = - new(ctx) ir_assignment(else_deref, op[1], NULL); + new(ctx) ir_assignment(else_deref, op[1]); stmt->else_instructions.push_tail(else_assign); result = new(ctx) ir_dereference_variable(tmp); @@ -1443,14 +1450,14 @@ ast_expression::hir(exec_list *instructions, ir_dereference *const then_deref = new(ctx) ir_dereference_variable(tmp); ir_assignment *const then_assign = - new(ctx) ir_assignment(then_deref, op[1], NULL); + new(ctx) ir_assignment(then_deref, op[1]); stmt->then_instructions.push_tail(then_assign); else_instructions.move_nodes_to(& stmt->else_instructions); ir_dereference *const else_deref = new(ctx) ir_dereference_variable(tmp); ir_assignment *const else_assign = - new(ctx) ir_assignment(else_deref, op[2], NULL); + new(ctx) ir_assignment(else_deref, op[2]); stmt->else_instructions.push_tail(else_assign); result = new(ctx) ir_dereference_variable(tmp); @@ -1910,7 +1917,8 @@ static void apply_type_qualifier_to_variable(const struct ast_type_qualifier *qual, ir_variable *var, struct _mesa_glsl_parse_state *state, - YYLTYPE *loc) + YYLTYPE *loc, + bool ubo_qualifiers_valid) { if (qual->flags.q.invariant) { if (var->used) { @@ -2003,24 +2011,10 @@ apply_type_qualifier_to_variable(const struct ast_type_qualifier *qual, if (var->interpolation != INTERP_QUALIFIER_NONE && !(state->target == vertex_shader && var->mode == ir_var_out) && !(state->target == fragment_shader && var->mode == ir_var_in)) { - const char *qual_string = NULL; - switch (var->interpolation) { - case INTERP_QUALIFIER_FLAT: - qual_string = "flat"; - break; - case INTERP_QUALIFIER_NOPERSPECTIVE: - qual_string = "noperspective"; - break; - case INTERP_QUALIFIER_SMOOTH: - qual_string = "smooth"; - break; - } - _mesa_glsl_error(loc, state, "interpolation qualifier `%s' can only be applied to " "vertex shader outputs and fragment shader inputs.", - qual_string); - + var->interpolation_string()); } var->pixel_center_integer = qual->flags.q.pixel_center_integer; @@ -2092,14 +2086,36 @@ apply_type_qualifier_to_variable(const struct ast_type_qualifier *qual, } else { var->location = qual->location; } + + if (qual->flags.q.explicit_index) { + /* From the GLSL 4.30 specification, section 4.4.2 (Output + * Layout Qualifiers): + * + * "It is also a compile-time error if a fragment shader + * sets a layout index to less than 0 or greater than 1." + * + * Older specifications don't mandate a behavior; we take + * this as a clarification and always generate the error. + */ + if (qual->index < 0 || qual->index > 1) { + _mesa_glsl_error(loc, state, + "explicit index may only be 0 or 1\n"); + } else { + var->explicit_index = true; + var->index = qual->index; + } + } } + } else if (qual->flags.q.explicit_index) { + _mesa_glsl_error(loc, state, + "explicit index requires explicit location\n"); } /* Does the declaration use the 'layout' keyword? */ const bool uses_layout = qual->flags.q.pixel_center_integer || qual->flags.q.origin_upper_left - || qual->flags.q.explicit_location; + || qual->flags.q.explicit_location; /* no need for index since it relies on location */ /* Does the declaration use the deprecated 'attribute' or 'varying' * keywords? @@ -2177,6 +2193,23 @@ apply_type_qualifier_to_variable(const struct ast_type_qualifier *qual, var->depth_layout = ir_depth_layout_unchanged; else var->depth_layout = ir_depth_layout_none; + + if (qual->flags.q.std140 || + qual->flags.q.packed || + qual->flags.q.shared) { + _mesa_glsl_error(loc, state, + "uniform block layout qualifiers std140, packed, and " + "shared can only be applied to uniform blocks, not " + "members"); + } + + if (!ubo_qualifiers_valid && + (qual->flags.q.row_major || qual->flags.q.column_major)) { + _mesa_glsl_error(loc, state, + "uniform block layout qualifiers row_major and " + "column_major can only be applied to uniform block " + "members"); + } } /** @@ -2597,7 +2630,7 @@ ast_declarator_list::hir(exec_list *instructions, } apply_type_qualifier_to_variable(& this->type->qualifier, var, state, - & loc); + & loc, this->ubo_qualifiers_valid); if (this->type->qualifier.flags.q.invariant) { if ((state->target == vertex_shader) && !(var->mode == ir_var_out || @@ -3014,7 +3047,8 @@ ast_parameter_declarator::hir(exec_list *instructions, /* Apply any specified qualifiers to the parameter declaration. Note that * for function parameters the default mode is 'in'. */ - apply_type_qualifier_to_variable(& this->type->qualifier, var, state, & loc); + apply_type_qualifier_to_variable(& this->type->qualifier, var, state, & loc, + false); /* From page 17 (page 23 of the PDF) of the GLSL 1.20 spec: * @@ -3422,9 +3456,7 @@ ast_jump_statement::hir(exec_list *instructions, new(ctx) ir_dereference_variable(is_break_var); ir_constant *const true_val = new(ctx) ir_constant(true); ir_assignment *const set_break_var = - new(ctx) ir_assignment(deref_is_break_var, - true_val, - NULL); + new(ctx) ir_assignment(deref_is_break_var, true_val); instructions->push_tail(set_break_var); } @@ -3505,11 +3537,9 @@ ast_switch_statement::hir(exec_list *instructions, * * "The type of init-expression in a switch statement must be a * scalar integer." - * - * The checks are separated so that higher quality diagnostics can be - * generated for cases where the rule is violated. */ - if (!test_expression->type->is_integer()) { + if (!test_expression->type->is_scalar() || + !test_expression->type->is_integer()) { YYLTYPE loc = this->test_expression->get_location(); _mesa_glsl_error(& loc, @@ -3540,8 +3570,7 @@ ast_switch_statement::hir(exec_list *instructions, ir_dereference_variable *deref_is_fallthru_var = new(ctx) ir_dereference_variable(state->switch_state.is_fallthru_var); instructions->push_tail(new(ctx) ir_assignment(deref_is_fallthru_var, - is_fallthru_val, - NULL)); + is_fallthru_val)); /* Initalize is_break state to false. */ @@ -3554,13 +3583,12 @@ ast_switch_statement::hir(exec_list *instructions, ir_dereference_variable *deref_is_break_var = new(ctx) ir_dereference_variable(state->switch_state.is_break_var); instructions->push_tail(new(ctx) ir_assignment(deref_is_break_var, - is_break_val, - NULL)); + is_break_val)); /* Cache test expression. */ test_to_hir(instructions, state); - + /* Emit code for body of switch stmt. */ body->hir(instructions, state); @@ -3569,290 +3597,264 @@ ast_switch_statement::hir(exec_list *instructions, state->switch_state = saved; - /* Switch statements do not have r-values. - */ - return NULL; - } + /* Switch statements do not have r-values. */ + return NULL; +} - void - ast_switch_statement::test_to_hir(exec_list *instructions, - struct _mesa_glsl_parse_state *state) - { - void *ctx = state; +void +ast_switch_statement::test_to_hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + void *ctx = state; - /* Cache value of test expression. - */ - ir_rvalue *const test_val = - test_expression->hir(instructions, - state); + /* Cache value of test expression. */ + ir_rvalue *const test_val = + test_expression->hir(instructions, + state); - state->switch_state.test_var = new(ctx) ir_variable(glsl_type::int_type, - "switch_test_tmp", - ir_var_temporary); - ir_dereference_variable *deref_test_var = - new(ctx) ir_dereference_variable(state->switch_state.test_var); + state->switch_state.test_var = new(ctx) ir_variable(test_val->type, + "switch_test_tmp", + ir_var_temporary); + ir_dereference_variable *deref_test_var = + new(ctx) ir_dereference_variable(state->switch_state.test_var); - instructions->push_tail(state->switch_state.test_var); - instructions->push_tail(new(ctx) ir_assignment(deref_test_var, - test_val, - NULL)); - } + instructions->push_tail(state->switch_state.test_var); + instructions->push_tail(new(ctx) ir_assignment(deref_test_var, test_val)); +} - ir_rvalue * - ast_switch_body::hir(exec_list *instructions, - struct _mesa_glsl_parse_state *state) - { - if (stmts != NULL) - stmts->hir(instructions, state); +ir_rvalue * +ast_switch_body::hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + if (stmts != NULL) + stmts->hir(instructions, state); - /* Switch bodies do not have r-values. - */ - return NULL; - } + /* Switch bodies do not have r-values. */ + return NULL; +} +ir_rvalue * +ast_case_statement_list::hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + foreach_list_typed (ast_case_statement, case_stmt, link, & this->cases) + case_stmt->hir(instructions, state); - ir_rvalue * - ast_case_statement_list::hir(exec_list *instructions, - struct _mesa_glsl_parse_state *state) - { - foreach_list_typed (ast_case_statement, case_stmt, link, & this->cases) - case_stmt->hir(instructions, state); + /* Case statements do not have r-values. */ + return NULL; +} - /* Case statements do not have r-values. - */ - return NULL; - } +ir_rvalue * +ast_case_statement::hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + labels->hir(instructions, state); + + /* Conditionally set fallthru state based on break state. */ + ir_constant *const false_val = new(state) ir_constant(false); + ir_dereference_variable *const deref_is_fallthru_var = + new(state) ir_dereference_variable(state->switch_state.is_fallthru_var); + ir_dereference_variable *const deref_is_break_var = + new(state) ir_dereference_variable(state->switch_state.is_break_var); + ir_assignment *const reset_fallthru_on_break = + new(state) ir_assignment(deref_is_fallthru_var, + false_val, + deref_is_break_var); + instructions->push_tail(reset_fallthru_on_break); + + /* Guard case statements depending on fallthru state. */ + ir_dereference_variable *const deref_fallthru_guard = + new(state) ir_dereference_variable(state->switch_state.is_fallthru_var); + ir_if *const test_fallthru = new(state) ir_if(deref_fallthru_guard); + + foreach_list_typed (ast_node, stmt, link, & this->stmts) + stmt->hir(& test_fallthru->then_instructions, state); + + instructions->push_tail(test_fallthru); + + /* Case statements do not have r-values. */ + return NULL; +} - ir_rvalue * - ast_case_statement::hir(exec_list *instructions, - struct _mesa_glsl_parse_state *state) - { - labels->hir(instructions, state); - - /* Conditionally set fallthru state based on break state. - */ - ir_constant *const false_val = new(state) ir_constant(false); - ir_dereference_variable *const deref_is_fallthru_var = - new(state) ir_dereference_variable(state->switch_state.is_fallthru_var); - ir_dereference_variable *const deref_is_break_var = - new(state) ir_dereference_variable(state->switch_state.is_break_var); - ir_assignment *const reset_fallthru_on_break = - new(state) ir_assignment(deref_is_fallthru_var, - false_val, - deref_is_break_var); - instructions->push_tail(reset_fallthru_on_break); - - /* Guard case statements depending on fallthru state. - */ - ir_dereference_variable *const deref_fallthru_guard = - new(state) ir_dereference_variable(state->switch_state.is_fallthru_var); - ir_if *const test_fallthru = new(state) ir_if(deref_fallthru_guard); - - foreach_list_typed (ast_node, stmt, link, & this->stmts) - stmt->hir(& test_fallthru->then_instructions, state); - - instructions->push_tail(test_fallthru); - - /* Case statements do not have r-values. - */ - return NULL; - } - - - ir_rvalue * - ast_case_label_list::hir(exec_list *instructions, - struct _mesa_glsl_parse_state *state) - { - foreach_list_typed (ast_case_label, label, link, & this->labels) - label->hir(instructions, state); - - /* Case labels do not have r-values. - */ - return NULL; - } - - - ir_rvalue * - ast_case_label::hir(exec_list *instructions, - struct _mesa_glsl_parse_state *state) - { - void *ctx = state; - - ir_dereference_variable *deref_fallthru_var = - new(ctx) ir_dereference_variable(state->switch_state.is_fallthru_var); - - ir_rvalue *const true_val = new(ctx) ir_constant(true); - - /* If not default case, ... - */ - if (this->test_value != NULL) { - /* Conditionally set fallthru state based on - * comparison of cached test expression value to case label. - */ - ir_rvalue *const label_rval = this->test_value->hir(instructions, state); - ir_constant *label_const = label_rval->constant_expression_value(); - - if (!label_const) { - YYLTYPE loc = this->test_value->get_location(); - - _mesa_glsl_error(& loc, state, - "switch statement case label must be a " - "constant expression"); - - /* Stuff a dummy value in to allow processing to continue. */ - label_const = new(ctx) ir_constant(0); - } else { - ast_expression *previous_label = (ast_expression *) - hash_table_find(state->switch_state.labels_ht, +ir_rvalue * +ast_case_label_list::hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + foreach_list_typed (ast_case_label, label, link, & this->labels) + label->hir(instructions, state); + + /* Case labels do not have r-values. */ + return NULL; +} + +ir_rvalue * +ast_case_label::hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + void *ctx = state; + + ir_dereference_variable *deref_fallthru_var = + new(ctx) ir_dereference_variable(state->switch_state.is_fallthru_var); + + ir_rvalue *const true_val = new(ctx) ir_constant(true); + + /* If not default case, ... */ + if (this->test_value != NULL) { + /* Conditionally set fallthru state based on + * comparison of cached test expression value to case label. + */ + ir_rvalue *const label_rval = this->test_value->hir(instructions, state); + ir_constant *label_const = label_rval->constant_expression_value(); + + if (!label_const) { + YYLTYPE loc = this->test_value->get_location(); + + _mesa_glsl_error(& loc, state, + "switch statement case label must be a " + "constant expression"); + + /* Stuff a dummy value in to allow processing to continue. */ + label_const = new(ctx) ir_constant(0); + } else { + ast_expression *previous_label = (ast_expression *) + hash_table_find(state->switch_state.labels_ht, + (void *)(uintptr_t)label_const->value.u[0]); + + if (previous_label) { + YYLTYPE loc = this->test_value->get_location(); + _mesa_glsl_error(& loc, state, + "duplicate case value"); + + loc = previous_label->get_location(); + _mesa_glsl_error(& loc, state, + "this is the previous case label"); + } else { + hash_table_insert(state->switch_state.labels_ht, + this->test_value, (void *)(uintptr_t)label_const->value.u[0]); + } + } - if (previous_label) { - YYLTYPE loc = this->test_value->get_location(); - _mesa_glsl_error(& loc, state, - "duplicate case value"); - - loc = previous_label->get_location(); - _mesa_glsl_error(& loc, state, - "this is the previous case label"); - } else { - hash_table_insert(state->switch_state.labels_ht, - this->test_value, - (void *)(uintptr_t)label_const->value.u[0]); - } - } - - ir_dereference_variable *deref_test_var = - new(ctx) ir_dereference_variable(state->switch_state.test_var); - - ir_rvalue *const test_cond = new(ctx) ir_expression(ir_binop_all_equal, - glsl_type::bool_type, - label_const, - deref_test_var); - - ir_assignment *set_fallthru_on_test = - new(ctx) ir_assignment(deref_fallthru_var, - true_val, - test_cond); - - instructions->push_tail(set_fallthru_on_test); - } else { /* default case */ - if (state->switch_state.previous_default) { - printf("a\n"); - YYLTYPE loc = this->get_location(); - _mesa_glsl_error(& loc, state, - "multiple default labels in one switch"); - - printf("b\n"); - - loc = state->switch_state.previous_default->get_location(); - _mesa_glsl_error(& loc, state, - "this is the first default label"); - } - state->switch_state.previous_default = this; - - /* Set falltrhu state. - */ - ir_assignment *set_fallthru = - new(ctx) ir_assignment(deref_fallthru_var, - true_val, - NULL); - - instructions->push_tail(set_fallthru); - } - - /* Case statements do not have r-values. - */ - return NULL; - } - - - void - ast_iteration_statement::condition_to_hir(ir_loop *stmt, - struct _mesa_glsl_parse_state *state) - { - void *ctx = state; - - if (condition != NULL) { - ir_rvalue *const cond = - condition->hir(& stmt->body_instructions, state); - - if ((cond == NULL) - || !cond->type->is_boolean() || !cond->type->is_scalar()) { - YYLTYPE loc = condition->get_location(); - - _mesa_glsl_error(& loc, state, - "loop condition must be scalar boolean"); - } else { - /* As the first code in the loop body, generate a block that looks - * like 'if (!condition) break;' as the loop termination condition. - */ - ir_rvalue *const not_cond = - new(ctx) ir_expression(ir_unop_logic_not, glsl_type::bool_type, cond, - NULL); - - ir_if *const if_stmt = new(ctx) ir_if(not_cond); - - ir_jump *const break_stmt = - new(ctx) ir_loop_jump(ir_loop_jump::jump_break); - - if_stmt->then_instructions.push_tail(break_stmt); - stmt->body_instructions.push_tail(if_stmt); - } - } - } - - - ir_rvalue * - ast_iteration_statement::hir(exec_list *instructions, - struct _mesa_glsl_parse_state *state) - { - void *ctx = state; - - /* For-loops and while-loops start a new scope, but do-while loops do not. - */ - if (mode != ast_do_while) - state->symbols->push_scope(); - - if (init_statement != NULL) - init_statement->hir(instructions, state); - - ir_loop *const stmt = new(ctx) ir_loop(); - instructions->push_tail(stmt); - - /* Track the current loop nesting. - */ - ast_iteration_statement *nesting_ast = state->loop_nesting_ast; - - state->loop_nesting_ast = this; - - /* Likewise, indicate that following code is closest to a loop, - * NOT closest to a switch. - */ - bool saved_is_switch_innermost = state->switch_state.is_switch_innermost; - state->switch_state.is_switch_innermost = false; - - if (mode != ast_do_while) - condition_to_hir(stmt, state); + ir_dereference_variable *deref_test_var = + new(ctx) ir_dereference_variable(state->switch_state.test_var); - if (body != NULL) - body->hir(& stmt->body_instructions, state); + ir_rvalue *const test_cond = new(ctx) ir_expression(ir_binop_all_equal, + label_const, + deref_test_var); - if (rest_expression != NULL) - rest_expression->hir(& stmt->body_instructions, state); + ir_assignment *set_fallthru_on_test = + new(ctx) ir_assignment(deref_fallthru_var, + true_val, + test_cond); - if (mode == ast_do_while) - condition_to_hir(stmt, state); + instructions->push_tail(set_fallthru_on_test); + } else { /* default case */ + if (state->switch_state.previous_default) { + YYLTYPE loc = this->get_location(); + _mesa_glsl_error(& loc, state, + "multiple default labels in one switch"); - if (mode != ast_do_while) - state->symbols->pop_scope(); + loc = state->switch_state.previous_default->get_location(); + _mesa_glsl_error(& loc, state, + "this is the first default label"); + } + state->switch_state.previous_default = this; + + /* Set falltrhu state. */ + ir_assignment *set_fallthru = + new(ctx) ir_assignment(deref_fallthru_var, true_val); + + instructions->push_tail(set_fallthru); + } + + /* Case statements do not have r-values. */ + return NULL; +} - /* Restore previous nesting before returning. - */ - state->loop_nesting_ast = nesting_ast; - state->switch_state.is_switch_innermost = saved_is_switch_innermost; +void +ast_iteration_statement::condition_to_hir(ir_loop *stmt, + struct _mesa_glsl_parse_state *state) +{ + void *ctx = state; + + if (condition != NULL) { + ir_rvalue *const cond = + condition->hir(& stmt->body_instructions, state); + + if ((cond == NULL) + || !cond->type->is_boolean() || !cond->type->is_scalar()) { + YYLTYPE loc = condition->get_location(); + + _mesa_glsl_error(& loc, state, + "loop condition must be scalar boolean"); + } else { + /* As the first code in the loop body, generate a block that looks + * like 'if (!condition) break;' as the loop termination condition. + */ + ir_rvalue *const not_cond = + new(ctx) ir_expression(ir_unop_logic_not, cond); + + ir_if *const if_stmt = new(ctx) ir_if(not_cond); + + ir_jump *const break_stmt = + new(ctx) ir_loop_jump(ir_loop_jump::jump_break); + + if_stmt->then_instructions.push_tail(break_stmt); + stmt->body_instructions.push_tail(if_stmt); + } + } +} + + +ir_rvalue * +ast_iteration_statement::hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + void *ctx = state; + + /* For-loops and while-loops start a new scope, but do-while loops do not. + */ + if (mode != ast_do_while) + state->symbols->push_scope(); + + if (init_statement != NULL) + init_statement->hir(instructions, state); + + ir_loop *const stmt = new(ctx) ir_loop(); + instructions->push_tail(stmt); + + /* Track the current loop nesting. */ + ast_iteration_statement *nesting_ast = state->loop_nesting_ast; + + state->loop_nesting_ast = this; + + /* Likewise, indicate that following code is closest to a loop, + * NOT closest to a switch. + */ + bool saved_is_switch_innermost = state->switch_state.is_switch_innermost; + state->switch_state.is_switch_innermost = false; + + if (mode != ast_do_while) + condition_to_hir(stmt, state); + + if (body != NULL) + body->hir(& stmt->body_instructions, state); + + if (rest_expression != NULL) + rest_expression->hir(& stmt->body_instructions, state); + + if (mode == ast_do_while) + condition_to_hir(stmt, state); + + if (mode != ast_do_while) + state->symbols->pop_scope(); + + /* Restore previous nesting before returning. */ + state->loop_nesting_ast = nesting_ast; + state->switch_state.is_switch_innermost = saved_is_switch_innermost; /* Loops do not have r-values. */ @@ -4006,3 +4008,154 @@ ast_struct_specifier::hir(exec_list *instructions, */ return NULL; } + +static struct gl_uniform_block * +get_next_uniform_block(struct _mesa_glsl_parse_state *state) +{ + if (state->num_uniform_blocks >= state->uniform_block_array_size) { + state->uniform_block_array_size *= 2; + if (state->uniform_block_array_size <= 4) + state->uniform_block_array_size = 4; + + state->uniform_blocks = reralloc(state, + state->uniform_blocks, + struct gl_uniform_block, + state->uniform_block_array_size); + } + + memset(&state->uniform_blocks[state->num_uniform_blocks], + 0, sizeof(*state->uniform_blocks)); + return &state->uniform_blocks[state->num_uniform_blocks++]; +} + +ir_rvalue * +ast_uniform_block::hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + /* The ast_uniform_block has a list of ast_declarator_lists. We + * need to turn those into ir_variables with an association + * with this uniform block. + */ + struct gl_uniform_block *ubo = get_next_uniform_block(state); + ubo->Name = ralloc_strdup(state->uniform_blocks, this->block_name); + + unsigned int num_variables = 0; + foreach_list_typed(ast_declarator_list, decl_list, link, &declarations) { + foreach_list_const(node, &decl_list->declarations) { + num_variables++; + } + } + + bool block_row_major = this->layout.flags.q.row_major; + + ubo->Uniforms = rzalloc_array(state->uniform_blocks, + struct gl_uniform_buffer_variable, + num_variables); + + foreach_list_typed(ast_declarator_list, decl_list, link, &declarations) { + exec_list declared_variables; + + decl_list->hir(&declared_variables, state); + + foreach_list_const(node, &declared_variables) { + struct ir_variable *var = (ir_variable *)node; + + struct gl_uniform_buffer_variable *ubo_var = + &ubo->Uniforms[ubo->NumUniforms++]; + + var->uniform_block = ubo - state->uniform_blocks; + + ubo_var->Name = ralloc_strdup(state->uniform_blocks, var->name); + ubo_var->Type = var->type; + ubo_var->Buffer = ubo - state->uniform_blocks; + ubo_var->Offset = 0; /* Assigned at link time. */ + + if (var->type->is_matrix() || + (var->type->is_array() && var->type->fields.array->is_matrix())) { + ubo_var->RowMajor = block_row_major; + if (decl_list->type->qualifier.flags.q.row_major) + ubo_var->RowMajor = true; + else if (decl_list->type->qualifier.flags.q.column_major) + ubo_var->RowMajor = false; + } + + /* From the GL_ARB_uniform_buffer_object spec: + * + * "Sampler types are not allowed inside of uniform + * blocks. All other types, arrays, and structures + * allowed for uniforms are allowed within a uniform + * block." + */ + if (var->type->contains_sampler()) { + YYLTYPE loc = decl_list->get_location(); + _mesa_glsl_error(&loc, state, + "Uniform in non-default uniform block contains sampler\n"); + } + } + + instructions->append_list(&declared_variables); + } + + return NULL; +} + +static void +detect_conflicting_assignments(struct _mesa_glsl_parse_state *state, + exec_list *instructions) +{ + bool gl_FragColor_assigned = false; + bool gl_FragData_assigned = false; + bool user_defined_fs_output_assigned = false; + ir_variable *user_defined_fs_output = NULL; + + /* It would be nice to have proper location information. */ + YYLTYPE loc; + memset(&loc, 0, sizeof(loc)); + + foreach_list(node, instructions) { + ir_variable *var = ((ir_instruction *)node)->as_variable(); + + if (!var || !var->assigned) + continue; + + if (strcmp(var->name, "gl_FragColor") == 0) + gl_FragColor_assigned = true; + else if (strcmp(var->name, "gl_FragData") == 0) + gl_FragData_assigned = true; + else if (strncmp(var->name, "gl_", 3) != 0) { + if (state->target == fragment_shader && + (var->mode == ir_var_out || var->mode == ir_var_inout)) { + user_defined_fs_output_assigned = true; + user_defined_fs_output = var; + } + } + } + + /* From the GLSL 1.30 spec: + * + * "If a shader statically assigns a value to gl_FragColor, it + * may not assign a value to any element of gl_FragData. If a + * shader statically writes a value to any element of + * gl_FragData, it may not assign a value to + * gl_FragColor. That is, a shader may assign values to either + * gl_FragColor or gl_FragData, but not both. Multiple shaders + * linked together must also consistently write just one of + * these variables. Similarly, if user declared output + * variables are in use (statically assigned to), then the + * built-in variables gl_FragColor and gl_FragData may not be + * assigned to. These incorrect usages all generate compile + * time errors." + */ + if (gl_FragColor_assigned && gl_FragData_assigned) { + _mesa_glsl_error(&loc, state, "fragment shader writes to both " + "`gl_FragColor' and `gl_FragData'\n"); + } else if (gl_FragColor_assigned && user_defined_fs_output_assigned) { + _mesa_glsl_error(&loc, state, "fragment shader writes to both " + "`gl_FragColor' and `%s'\n", + user_defined_fs_output->name); + } else if (gl_FragData_assigned && user_defined_fs_output_assigned) { + _mesa_glsl_error(&loc, state, "fragment shader writes to both " + "`gl_FragData' and `%s'\n", + user_defined_fs_output->name); + } +}