From: Fabian Bieler <fabianbie...@fastmail.fm>
---
src/glsl/ast.h | 1 +
src/glsl/ast_to_hir.cpp | 45 ++++++++++++++++++++
src/glsl/ast_type.cpp | 3 +-
src/glsl/builtin_variables.cpp | 8 ++--
src/glsl/glsl_lexer.ll | 2 +-
src/glsl/glsl_parser.yy | 15 ++++---
src/glsl/glsl_parser_extras.cpp | 2 +
src/glsl/glsl_types.cpp | 5 +++
src/glsl/glsl_types.h | 6 +++
src/glsl/ir.cpp | 2 +
src/glsl/ir.h | 1 +
src/glsl/ir_print_visitor.cpp | 5 ++-
src/glsl/ir_reader.cpp | 2 +
src/glsl/ir_set_program_inouts.cpp | 69 +++++++++++++++++++++++++++----
src/glsl/link_varyings.cpp | 15 ++++++-
src/glsl/lower_named_interface_blocks.cpp | 1 +
src/glsl/lower_packed_varyings.cpp | 1 +
17 files changed, 161 insertions(+), 22 deletions(-)
diff --git a/src/glsl/ast.h b/src/glsl/ast.h
index 26ad3bf..87e1354 100644
--- a/src/glsl/ast.h
+++ b/src/glsl/ast.h
@@ -434,6 +434,7 @@ struct ast_type_qualifier {
unsigned out:1;
unsigned centroid:1;
unsigned sample:1;
+ unsigned patch:1;
unsigned uniform:1;
unsigned smooth:1;
unsigned flat:1;
diff --git a/src/glsl/ast_to_hir.cpp b/src/glsl/ast_to_hir.cpp
index 53daf13..837bac7 100644
--- a/src/glsl/ast_to_hir.cpp
+++ b/src/glsl/ast_to_hir.cpp
@@ -2461,6 +2461,9 @@ apply_type_qualifier_to_variable(const struct
ast_type_qualifier *qual,
var->data.stream = qual->stream;
}
+ if (qual->flags.q.patch)
+ var->data.patch = 1;
+
if (qual->flags.q.attribute && state->stage != MESA_SHADER_VERTEX) {
var->type = glsl_type::error_type;
_mesa_glsl_error(loc, state,
@@ -3119,6 +3122,17 @@ handle_tess_ctrl_shader_output_decl(struct
_mesa_glsl_parse_state *state,
num_vertices = state->out_qualifier->vertices;
}
+ if (!var->type->is_array() && !var->data.patch) {
+ _mesa_glsl_error(&loc, state,
+ "tessellation control shader outputs must be arrays");
+
+ /* To avoid cascading failures, short circuit the checks below. */
+ return;
+ }
+
+ if (var->data.patch)
+ return;
+
if (var->type->is_unsized_array()) {
if (num_vertices != 0)
var->type = glsl_type::get_array_instance(var->type->fields.array,
@@ -3940,6 +3954,33 @@ ast_declarator_list::hir(exec_list *instructions,
}
+ /* From section 4.3.4 of the GLSL 4.00 spec:
+ * "Input variables may not be declared using the patch in qualifier
+ * in tessellation control or geometry shaders."
+ *
+ * From section 4.3.6 of the GLSL 4.00 spec:
+ * "It is an error to use patch out in a vertex, tessellation
+ * evaluation, or geometry shader."
+ *
+ * This doesn't explicitly forbid using them in a fragment shader, but
+ * that's probably just an oversight.
+ */
+ if (state->stage != MESA_SHADER_TESS_EVAL
+ && this->type->qualifier.flags.q.patch
+ && this->type->qualifier.flags.q.in) {
+
+ _mesa_glsl_error(&loc, state, "'patch in' can only be used in a "
+ "tessellation evaluation shader");
+ }
+
+ if (state->stage != MESA_SHADER_TESS_CTRL
+ && this->type->qualifier.flags.q.patch
+ && this->type->qualifier.flags.q.out) {
+
+ _mesa_glsl_error(&loc, state, "'patch out' can only be used in a "
+ "tessellation control shader");
+ }
+
/* Precision qualifiers exists only in GLSL versions 1.00 and >= 1.30.
*/
if (this->type->qualifier.precision != ast_precision_none) {
@@ -5463,6 +5504,7 @@ ast_process_structure_or_interface_block(exec_list
*instructions,
interpret_interpolation_qualifier(qual, var_mode, state, &loc);
fields[i].centroid = qual->flags.q.centroid ? 1 : 0;
fields[i].sample = qual->flags.q.sample ? 1 : 0;
+ fields[i].patch = qual->flags.q.patch ? 1 : 0;
/* Only save explicitly defined streams in block's field */
fields[i].stream = qual->flags.q.explicit_stream ? qual->stream : -1;
@@ -5794,6 +5836,8 @@ ast_interface_block::hir(exec_list *instructions,
earlier_per_vertex->fields.structure[j].centroid;
fields[i].sample =
earlier_per_vertex->fields.structure[j].sample;
+ fields[i].patch =
+ earlier_per_vertex->fields.structure[j].patch;
}
}
@@ -5973,6 +6017,7 @@ ast_interface_block::hir(exec_list *instructions,
var->data.interpolation = fields[i].interpolation;
var->data.centroid = fields[i].centroid;
var->data.sample = fields[i].sample;
+ var->data.patch = fields[i].patch;
var->init_interface_type(block_type);
if (var_mode == ir_var_shader_in || var_mode == ir_var_uniform)
diff --git a/src/glsl/ast_type.cpp b/src/glsl/ast_type.cpp
index 5bebaab..0d3651d 100644
--- a/src/glsl/ast_type.cpp
+++ b/src/glsl/ast_type.cpp
@@ -85,7 +85,8 @@ bool
ast_type_qualifier::has_auxiliary_storage() const
{
return this->flags.q.centroid
- || this->flags.q.sample;
+ || this->flags.q.sample
+ || this->flags.q.patch;
}
const char*
diff --git a/src/glsl/builtin_variables.cpp b/src/glsl/builtin_variables.cpp
index bb947a8..874cb10 100644
--- a/src/glsl/builtin_variables.cpp
+++ b/src/glsl/builtin_variables.cpp
@@ -881,10 +881,10 @@ builtin_variable_generator::generate_tcs_special_vars()
add_system_value(SYSTEM_VALUE_VERTICES_IN, int_t, "gl_PatchVerticesIn");
add_system_value(SYSTEM_VALUE_INVOCATION_ID, int_t, "gl_InvocationID");
- add_output(VARYING_SLOT_TESS_LEVEL_OUTER,
- array(float_t, 4), "gl_TessLevelOuter");
- add_output(VARYING_SLOT_TESS_LEVEL_INNER,
- array(float_t, 2), "gl_TessLevelInner");
+ add_output(VARYING_SLOT_TESS_LEVEL_OUTER, array(float_t, 4),
+ "gl_TessLevelOuter")->data.patch = 1;
+ add_output(VARYING_SLOT_TESS_LEVEL_INNER, array(float_t, 2),
+ "gl_TessLevelInner")->data.patch = 1;
}
diff --git a/src/glsl/glsl_lexer.ll b/src/glsl/glsl_lexer.ll
index 10db5b8..68f1989 100644
--- a/src/glsl/glsl_lexer.ll
+++ b/src/glsl/glsl_lexer.ll
@@ -314,6 +314,7 @@ invariant KEYWORD(120, 100, 120, 100, INVARIANT);
flat KEYWORD(130, 100, 130, 300, FLAT);
smooth KEYWORD(130, 300, 130, 300, SMOOTH);
noperspective KEYWORD(130, 300, 130, 0, NOPERSPECTIVE);
+patch KEYWORD_WITH_ALT(0, 300, 400, 0,
yyextra->ARB_tessellation_shader_enable, PATCH);
sampler1D DEPRECATED_ES_KEYWORD(SAMPLER1D);
sampler2D return SAMPLER2D;
@@ -575,7 +576,6 @@ usamplerBuffer KEYWORD(140, 300, 140, 0,
USAMPLERBUFFER);
/* Additional reserved words in GLSL ES 3.00 */
resource KEYWORD(0, 300, 0, 0, RESOURCE);
-patch KEYWORD(0, 300, 0, 0, PATCH);
sample KEYWORD_WITH_ALT(400, 300, 400, 0,
yyextra->ARB_gpu_shader5_enable, SAMPLE);
subroutine KEYWORD(0, 300, 0, 0, SUBROUTINE);
diff --git a/src/glsl/glsl_parser.yy b/src/glsl/glsl_parser.yy
index eaf0dd6..716d43b 100644
--- a/src/glsl/glsl_parser.yy
+++ b/src/glsl/glsl_parser.yy
@@ -136,8 +136,9 @@ static bool match_layout_qualifier(const char *s1, const
char *s2,
%token ATTRIBUTE CONST_TOK BOOL_TOK FLOAT_TOK INT_TOK UINT_TOK DOUBLE_TOK
%token BREAK CONTINUE DO ELSE FOR IF DISCARD RETURN SWITCH CASE DEFAULT
%token BVEC2 BVEC3 BVEC4 IVEC2 IVEC3 IVEC4 UVEC2 UVEC3 UVEC4 VEC2 VEC3 VEC4
DVEC2 DVEC3 DVEC4
-%token CENTROID IN_TOK OUT_TOK INOUT_TOK UNIFORM VARYING SAMPLE
+%token CENTROID IN_TOK OUT_TOK INOUT_TOK UNIFORM VARYING PATCH SAMPLE
%token NOPERSPECTIVE FLAT SMOOTH
+%token ROW_MAJOR PACKED_TOK
%token MAT2X2 MAT2X3 MAT2X4
%token MAT3X2 MAT3X3 MAT3X4
%token MAT4X2 MAT4X3 MAT4X4
@@ -189,18 +190,18 @@ static bool match_layout_qualifier(const char *s1, const
char *s2,
/* Reserved words that are not actually used in the grammar.
*/
-%token ASM CLASS UNION ENUM TYPEDEF TEMPLATE THIS PACKED_TOK GOTO
+%token ASM CLASS UNION ENUM TYPEDEF TEMPLATE THIS GOTO
%token INLINE_TOK NOINLINE PUBLIC_TOK STATIC EXTERN EXTERNAL
%token LONG_TOK SHORT_TOK HALF FIXED_TOK UNSIGNED INPUT_TOK
%token HVEC2 HVEC3 HVEC4 FVEC2 FVEC3 FVEC4
%token SAMPLER3DRECT
%token SIZEOF CAST NAMESPACE USING
-%token RESOURCE PATCH
+%token RESOURCE
%token SUBROUTINE
%token ERROR_TOK
-%token COMMON PARTITION ACTIVE FILTER ROW_MAJOR
+%token COMMON PARTITION ACTIVE FILTER
%type <identifier> variable_identifier
%type <node> statement
@@ -1861,7 +1862,11 @@ auxiliary_storage_qualifier:
memset(& $$, 0, sizeof($$));
$$.flags.q.sample = 1;
}
- /* TODO: "patch" also goes here someday. */
+ | PATCH
+ {
+ memset(& $$, 0, sizeof($$));
+ $$.flags.q.patch = 1;
+ }
storage_qualifier:
CONST_TOK
diff --git a/src/glsl/glsl_parser_extras.cpp b/src/glsl/glsl_parser_extras.cpp
index 6f59022..b34c7b5 100644
--- a/src/glsl/glsl_parser_extras.cpp
+++ b/src/glsl/glsl_parser_extras.cpp
@@ -860,6 +860,8 @@ _mesa_ast_type_qualifier_print(const struct
ast_type_qualifier *q)
printf("centroid ");
if (q->flags.q.sample)
printf("sample ");
+ if (q->flags.q.patch)
+ printf("patch ");
if (q->flags.q.uniform)
printf("uniform ");
if (q->flags.q.smooth)
diff --git a/src/glsl/glsl_types.cpp b/src/glsl/glsl_types.cpp
index f675e90..71fc211 100644
--- a/src/glsl/glsl_types.cpp
+++ b/src/glsl/glsl_types.cpp
@@ -122,6 +122,7 @@ glsl_type::glsl_type(const glsl_struct_field *fields,
unsigned num_fields,
this->fields.structure[i].centroid = fields[i].centroid;
this->fields.structure[i].sample = fields[i].sample;
this->fields.structure[i].matrix_layout = fields[i].matrix_layout;
+ this->fields.structure[i].patch = fields[i].patch;
}
mtx_unlock(&glsl_type::mutex);
@@ -154,6 +155,7 @@ glsl_type::glsl_type(const glsl_struct_field *fields,
unsigned num_fields,
this->fields.structure[i].centroid = fields[i].centroid;
this->fields.structure[i].sample = fields[i].sample;
this->fields.structure[i].matrix_layout = fields[i].matrix_layout;
+ this->fields.structure[i].patch = fields[i].patch;
}
mtx_unlock(&glsl_type::mutex);
@@ -716,6 +718,9 @@ glsl_type::record_compare(const glsl_type *b) const
if (this->fields.structure[i].sample
!= b->fields.structure[i].sample)
return false;
+ if (this->fields.structure[i].patch
+ != b->fields.structure[i].patch)
+ return false;
}
return true;
diff --git a/src/glsl/glsl_types.h b/src/glsl/glsl_types.h
index f54a939..50c9610 100644
--- a/src/glsl/glsl_types.h
+++ b/src/glsl/glsl_types.h
@@ -752,6 +752,12 @@ struct glsl_struct_field {
unsigned matrix_layout:2;
/**
+ * For interface blocks, 1 if this variable is a per-patch input or output
+ * (as in ir_variable::patch). 0 otherwise.
+ */
+ unsigned patch:1;
+
+ /**
* For interface blocks, it has a value if this variable uses multiple
vertex
* streams (as in ir_variable::stream). -1 otherwise.
*/
diff --git a/src/glsl/ir.cpp b/src/glsl/ir.cpp
index dbd064f..ad525ab 100644
--- a/src/glsl/ir.cpp
+++ b/src/glsl/ir.cpp
@@ -1643,6 +1643,7 @@ ir_variable::ir_variable(const struct glsl_type *type,
const char *name,
this->data.read_only = false;
this->data.centroid = false;
this->data.sample = false;
+ this->data.patch = false;
this->data.invariant = false;
this->data.how_declared = ir_var_declared_normally;
this->data.mode = mode;
@@ -1785,6 +1786,7 @@ ir_function_signature::qualifiers_match(exec_list *params)
a->data.interpolation != b->data.interpolation ||
a->data.centroid != b->data.centroid ||
a->data.sample != b->data.sample ||
+ a->data.patch != b->data.patch ||
a->data.image_read_only != b->data.image_read_only ||
a->data.image_write_only != b->data.image_write_only ||
a->data.image_coherent != b->data.image_coherent ||
diff --git a/src/glsl/ir.h b/src/glsl/ir.h
index f904555..0b992c3 100644
--- a/src/glsl/ir.h
+++ b/src/glsl/ir.h
@@ -618,6 +618,7 @@ public:
unsigned read_only:1;
unsigned centroid:1;
unsigned sample:1;
+ unsigned patch:1;
unsigned invariant:1;
unsigned precise:1;
diff --git a/src/glsl/ir_print_visitor.cpp b/src/glsl/ir_print_visitor.cpp
index c991658..1df4408 100644
--- a/src/glsl/ir_print_visitor.cpp
+++ b/src/glsl/ir_print_visitor.cpp
@@ -167,6 +167,7 @@ void ir_print_visitor::visit(ir_variable *ir)
const char *const cent = (ir->data.centroid) ? "centroid " : "";
const char *const samp = (ir->data.sample) ? "sample " : "";
+ const char *const patc = (ir->data.patch) ? "patch " : "";
const char *const inv = (ir->data.invariant) ? "invariant " : "";
const char *const mode[] = { "", "uniform ", "shader_in ", "shader_out ",
"in ", "out ", "inout ",
@@ -176,8 +177,8 @@ void ir_print_visitor::visit(ir_variable *ir)
const char *const interp[] = { "", "smooth", "flat", "noperspective" };
STATIC_ASSERT(ARRAY_SIZE(interp) == INTERP_QUALIFIER_COUNT);
- fprintf(f, "(%s%s%s%s%s%s%s) ",
- loc, cent, samp, inv, mode[ir->data.mode],
+ fprintf(f, "(%s%s%s%s%s%s%s%s) ",
+ loc, cent, samp, patc, inv, mode[ir->data.mode],
stream[ir->data.stream],
interp[ir->data.interpolation]);
diff --git a/src/glsl/ir_reader.cpp b/src/glsl/ir_reader.cpp
index 4eae413..66c8af5 100644
--- a/src/glsl/ir_reader.cpp
+++ b/src/glsl/ir_reader.cpp
@@ -417,6 +417,8 @@ ir_reader::read_declaration(s_expression *expr)
var->data.centroid = 1;
} else if (strcmp(qualifier->value(), "sample") == 0) {
var->data.sample = 1;
+ } else if (strcmp(qualifier->value(), "patch") == 0) {
+ var->data.patch = 1;
} else if (strcmp(qualifier->value(), "invariant") == 0) {
var->data.invariant = 1;
} else if (strcmp(qualifier->value(), "uniform") == 0) {
diff --git a/src/glsl/ir_set_program_inouts.cpp
b/src/glsl/ir_set_program_inouts.cpp
index b968a1e..fe4d6da 100644
--- a/src/glsl/ir_set_program_inouts.cpp
+++ b/src/glsl/ir_set_program_inouts.cpp
@@ -140,6 +140,24 @@
ir_set_program_inouts_visitor::mark_whole_variable(ir_variable *var)
type = type->fields.array;
}
+ if (this->shader_stage == MESA_SHADER_TESS_CTRL &&
+ var->data.mode == ir_var_shader_in) {
+ assert(type->is_array());
+ type = type->fields.array;
+ }
+
+ if (this->shader_stage == MESA_SHADER_TESS_CTRL &&
+ var->data.mode == ir_var_shader_out && !var->data.patch) {
+ assert(type->is_array());
+ type = type->fields.array;
+ }
+
+ if (this->shader_stage == MESA_SHADER_TESS_EVAL &&
+ var->data.mode == ir_var_shader_in && !var->data.patch) {
+ assert(type->is_array());
+ type = type->fields.array;
+ }
+
mark(this->prog, var, 0, type->count_attribute_slots(),
this->shader_stage == MESA_SHADER_FRAGMENT);
}
@@ -165,6 +183,9 @@
ir_set_program_inouts_visitor::visit(ir_dereference_variable *ir)
*
* *Except gl_PrimitiveIDIn, as noted below.
*
+ * For tessellation control shaders all inputs and non-patch outputs are
+ * arrays. For tessellation evaluation shaders non-patch inputs are arrays.
+ *
* If the index can't be interpreted as a constant, or some other problem
* occurs, then nothing will be marked and false will be returned.
*/
@@ -184,6 +205,24 @@
ir_set_program_inouts_visitor::try_mark_partial_variable(ir_variable *var,
type = type->fields.array;
}
+ if (this->shader_stage == MESA_SHADER_TESS_CTRL &&
+ var->data.mode == ir_var_shader_in) {
+ assert(type->is_array());
+ type = type->fields.array;
+ }
+
+ if (this->shader_stage == MESA_SHADER_TESS_CTRL &&
+ var->data.mode == ir_var_shader_out && !var->data.patch) {
+ assert(type->is_array());
+ type = type->fields.array;
+ }
+
+ if (this->shader_stage == MESA_SHADER_TESS_EVAL &&
+ var->data.mode == ir_var_shader_in && !var->data.patch) {
+ assert(type->is_array());
+ type = type->fields.array;
+ }
+
/* The code below only handles:
*
* - Indexing into matrices
@@ -242,6 +281,22 @@
ir_set_program_inouts_visitor::try_mark_partial_variable(ir_variable *var,
return true;
}
+static bool
+is_multiple_vertices(gl_shader_stage stage, ir_variable *var)
+{
+ if (var->data.patch)
+ return false;
+
+ if (var->data.mode == ir_var_shader_in)
+ return stage == MESA_SHADER_GEOMETRY ||
+ stage == MESA_SHADER_TESS_CTRL ||
+ stage == MESA_SHADER_TESS_EVAL;
+ if (var->data.mode == ir_var_shader_out)
+ return stage == MESA_SHADER_TESS_CTRL;
+
+ return false;
+}
+
ir_visitor_status
ir_set_program_inouts_visitor::visit_enter(ir_dereference_array *ir)
{
@@ -256,10 +311,9 @@
ir_set_program_inouts_visitor::visit_enter(ir_dereference_array *ir)
*/
if (ir_dereference_variable * const deref_var =
inner_array->array->as_dereference_variable()) {
- if (this->shader_stage == MESA_SHADER_GEOMETRY &&
- deref_var->var->data.mode == ir_var_shader_in) {
- /* foo is a geometry shader input, so i is the vertex, and j the
- * part of the input we're accessing.
+ if (is_multiple_vertices(this->shader_stage, deref_var->var)) {
+ /* foo is a geometry or tessellation shader input, so i is
+ * the vertex, and j the part of the input we're accessing.
*/
if (try_mark_partial_variable(deref_var->var, ir->array_index))
{
@@ -275,10 +329,9 @@
ir_set_program_inouts_visitor::visit_enter(ir_dereference_array *ir)
} else if (ir_dereference_variable * const deref_var =
ir->array->as_dereference_variable()) {
/* ir => foo[i], where foo is a variable. */
- if (this->shader_stage == MESA_SHADER_GEOMETRY &&
- deref_var->var->data.mode == ir_var_shader_in) {
- /* foo is a geometry shader input, so i is the vertex, and we're
- * accessing the entire input.
+ if (is_multiple_vertices(this->shader_stage, deref_var->var)) {
+ /* foo is a geometry or tessellation shader input, so i is
+ * the vertex, and we're accessing the entire input.
*/
mark_whole_variable(deref_var->var);
/* We've now taken care of foo, but i might contain a subexpression
diff --git a/src/glsl/link_varyings.cpp b/src/glsl/link_varyings.cpp
index 7b2d4bd..c8f1bb9 100644
--- a/src/glsl/link_varyings.cpp
+++ b/src/glsl/link_varyings.cpp
@@ -116,6 +116,18 @@ cross_validate_types_and_qualifiers(struct
gl_shader_program *prog,
return;
}
+ if (input->data.patch != output->data.patch) {
+ linker_error(prog,
+ "%s shader output `%s' %s patch qualifier, "
+ "but %s shader input %s patch qualifier\n",
+ _mesa_shader_stage_to_string(producer_stage),
+ output->name,
+ (output->data.patch) ? "has" : "lacks",
+ _mesa_shader_stage_to_string(consumer_stage),
+ (input->data.patch) ? "has" : "lacks");
+ return;
+ }
+
if (!prog->IsES && input->data.invariant != output->data.invariant) {
linker_error(prog,
"%s shader output `%s' %s invariant qualifier, "
@@ -979,7 +991,8 @@ varying_matches::compute_packing_class(const ir_variable
*var)
*
* Therefore, the packing class depends only on the interpolation type.
*/
- unsigned packing_class = var->data.centroid | (var->data.sample << 1);
+ unsigned packing_class = var->data.centroid | (var->data.sample << 1) |
+ (var->data.patch << 2);
packing_class *= 4;
packing_class += var->data.interpolation;
return packing_class;
diff --git a/src/glsl/lower_named_interface_blocks.cpp
b/src/glsl/lower_named_interface_blocks.cpp
index 7304c51..2f1e3af 100644
--- a/src/glsl/lower_named_interface_blocks.cpp
+++ b/src/glsl/lower_named_interface_blocks.cpp
@@ -158,6 +158,7 @@ flatten_named_interface_blocks_declarations::run(exec_list
*instructions)
iface_t->fields.structure[i].interpolation;
new_var->data.centroid = iface_t->fields.structure[i].centroid;
new_var->data.sample = iface_t->fields.structure[i].sample;
+ new_var->data.patch = iface_t->fields.structure[i].patch;
new_var->init_interface_type(iface_t);
hash_table_insert(interface_namespace, new_var,
diff --git a/src/glsl/lower_packed_varyings.cpp
b/src/glsl/lower_packed_varyings.cpp
index d8bebb5..cfe414a 100644
--- a/src/glsl/lower_packed_varyings.cpp
+++ b/src/glsl/lower_packed_varyings.cpp
@@ -610,6 +610,7 @@ lower_packed_varyings_visitor::get_packed_varying_deref(
}
packed_var->data.centroid = unpacked_var->data.centroid;
packed_var->data.sample = unpacked_var->data.sample;
+ packed_var->data.patch = unpacked_var->data.patch;
packed_var->data.interpolation = unpacked_var->data.interpolation;
packed_var->data.location = location;
unpacked_var->insert_before(packed_var);
--
2.1.0
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