#include "linker.h"
#include "link_varyings.h"
#include "ir_optimization.h"
+#include "ir_rvalue_visitor.h"
extern "C" {
#include "main/shaderobj.h"
+#include "main/enums.h"
}
+void linker_error(gl_shader_program *, const char *, ...);
+
+namespace {
+
/**
* Visitor that determines whether or not a variable is ever written.
*/
ir_rvalue *param_rval = (ir_rvalue *)iter.get();
ir_variable *sig_param = (ir_variable *)sig_iter.get();
- if (sig_param->mode == ir_var_function_out ||
- sig_param->mode == ir_var_function_inout) {
+ if (sig_param->data.mode == ir_var_function_out ||
+ sig_param->data.mode == ir_var_function_inout) {
ir_variable *var = param_rval->variable_referenced();
if (var && strcmp(name, var->name) == 0) {
found = true;
};
+class geom_array_resize_visitor : public ir_hierarchical_visitor {
+public:
+ unsigned num_vertices;
+ gl_shader_program *prog;
+
+ geom_array_resize_visitor(unsigned num_vertices, gl_shader_program *prog)
+ {
+ this->num_vertices = num_vertices;
+ this->prog = prog;
+ }
+
+ virtual ~geom_array_resize_visitor()
+ {
+ /* empty */
+ }
+
+ virtual ir_visitor_status visit(ir_variable *var)
+ {
+ if (!var->type->is_array() || var->data.mode != ir_var_shader_in)
+ return visit_continue;
+
+ unsigned size = var->type->length;
+
+ /* Generate a link error if the shader has declared this array with an
+ * incorrect size.
+ */
+ if (size && size != this->num_vertices) {
+ linker_error(this->prog, "size of array %s declared as %u, "
+ "but number of input vertices is %u\n",
+ var->name, size, this->num_vertices);
+ return visit_continue;
+ }
+
+ /* Generate a link error if the shader attempts to access an input
+ * array using an index too large for its actual size assigned at link
+ * time.
+ */
+ if (var->data.max_array_access >= this->num_vertices) {
+ linker_error(this->prog, "geometry shader accesses element %i of "
+ "%s, but only %i input vertices\n",
+ var->data.max_array_access, var->name, this->num_vertices);
+ return visit_continue;
+ }
+
+ var->type = glsl_type::get_array_instance(var->type->element_type(),
+ this->num_vertices);
+ var->data.max_array_access = this->num_vertices - 1;
+
+ return visit_continue;
+ }
+
+ /* Dereferences of input variables need to be updated so that their type
+ * matches the newly assigned type of the variable they are accessing. */
+ virtual ir_visitor_status visit(ir_dereference_variable *ir)
+ {
+ ir->type = ir->var->type;
+ return visit_continue;
+ }
+
+ /* Dereferences of 2D input arrays need to be updated so that their type
+ * matches the newly assigned type of the array they are accessing. */
+ virtual ir_visitor_status visit_leave(ir_dereference_array *ir)
+ {
+ const glsl_type *const vt = ir->array->type;
+ if (vt->is_array())
+ ir->type = vt->element_type();
+ return visit_continue;
+ }
+};
+
+
+/**
+ * Visitor that determines whether or not a shader uses ir_end_primitive.
+ */
+class find_end_primitive_visitor : public ir_hierarchical_visitor {
+public:
+ find_end_primitive_visitor()
+ : found(false)
+ {
+ /* empty */
+ }
+
+ virtual ir_visitor_status visit(ir_end_primitive *)
+ {
+ found = true;
+ return visit_stop;
+ }
+
+ bool end_primitive_found()
+ {
+ return found;
+ }
+
+private:
+ bool found;
+};
+
+} /* anonymous namespace */
+
void
linker_error(gl_shader_program *prog, const char *fmt, ...)
{
void
-link_invalidate_variable_locations(gl_shader *sh, int input_base,
- int output_base)
+link_invalidate_variable_locations(exec_list *ir)
{
- foreach_list(node, sh->ir) {
+ foreach_list(node, ir) {
ir_variable *const var = ((ir_instruction *) node)->as_variable();
if (var == NULL)
continue;
- int base;
- switch (var->mode) {
- case ir_var_shader_in:
- base = input_base;
- break;
- case ir_var_shader_out:
- base = output_base;
- break;
- default:
- continue;
+ /* Only assign locations for variables that lack an explicit location.
+ * Explicit locations are set for all built-in variables, generic vertex
+ * shader inputs (via layout(location=...)), and generic fragment shader
+ * outputs (also via layout(location=...)).
+ */
+ if (!var->data.explicit_location) {
+ var->data.location = -1;
+ var->data.location_frac = 0;
}
- /* Only assign locations for generic attributes / varyings / etc.
+ /* ir_variable::is_unmatched_generic_inout is used by the linker while
+ * connecting outputs from one stage to inputs of the next stage.
+ *
+ * There are two implicit assumptions here. First, we assume that any
+ * built-in variable (i.e., non-generic in or out) will have
+ * explicit_location set. Second, we assume that any generic in or out
+ * will not have explicit_location set.
+ *
+ * This second assumption will only be valid until
+ * GL_ARB_separate_shader_objects is supported. When that extension is
+ * implemented, this function will need some modifications.
*/
- if ((var->location >= base) && !var->explicit_location)
- var->location = -1;
-
- if ((var->location == -1) && !var->explicit_location) {
- var->is_unmatched_generic_inout = 1;
- var->location_frac = 0;
+ if (!var->data.explicit_location) {
+ var->data.is_unmatched_generic_inout = 1;
} else {
- var->is_unmatched_generic_inout = 0;
+ var->data.is_unmatched_generic_inout = 0;
}
}
}
/**
- * Determine the number of attribute slots required for a particular type
+ * Set UsesClipDistance and ClipDistanceArraySize based on the given shader.
*
- * This code is here because it implements the language rules of a specific
- * GLSL version. Since it's a property of the language and not a property of
- * types in general, it doesn't really belong in glsl_type.
+ * Also check for errors based on incorrect usage of gl_ClipVertex and
+ * gl_ClipDistance.
+ *
+ * Return false if an error was reported.
*/
-unsigned
-count_attribute_slots(const glsl_type *t)
+static void
+analyze_clip_usage(const char *shader_type, struct gl_shader_program *prog,
+ struct gl_shader *shader, GLboolean *UsesClipDistance,
+ GLuint *ClipDistanceArraySize)
{
- /* From page 31 (page 37 of the PDF) of the GLSL 1.50 spec:
- *
- * "A scalar input counts the same amount against this limit as a vec4,
- * so applications may want to consider packing groups of four
- * unrelated float inputs together into a vector to better utilize the
- * capabilities of the underlying hardware. A matrix input will use up
- * multiple locations. The number of locations used will equal the
- * number of columns in the matrix."
- *
- * The spec does not explicitly say how arrays are counted. However, it
- * should be safe to assume the total number of slots consumed by an array
- * is the number of entries in the array multiplied by the number of slots
- * consumed by a single element of the array.
- */
-
- if (t->is_array())
- return t->array_size() * count_attribute_slots(t->element_type());
+ *ClipDistanceArraySize = 0;
- if (t->is_matrix())
- return t->matrix_columns;
+ if (!prog->IsES && prog->Version >= 130) {
+ /* From section 7.1 (Vertex Shader Special Variables) of the
+ * GLSL 1.30 spec:
+ *
+ * "It is an error for a shader to statically write both
+ * gl_ClipVertex and gl_ClipDistance."
+ *
+ * This does not apply to GLSL ES shaders, since GLSL ES defines neither
+ * gl_ClipVertex nor gl_ClipDistance.
+ */
+ find_assignment_visitor clip_vertex("gl_ClipVertex");
+ find_assignment_visitor clip_distance("gl_ClipDistance");
- return 1;
+ clip_vertex.run(shader->ir);
+ clip_distance.run(shader->ir);
+ if (clip_vertex.variable_found() && clip_distance.variable_found()) {
+ linker_error(prog, "%s shader writes to both `gl_ClipVertex' "
+ "and `gl_ClipDistance'\n", shader_type);
+ return;
+ }
+ *UsesClipDistance = clip_distance.variable_found();
+ ir_variable *clip_distance_var =
+ shader->symbols->get_variable("gl_ClipDistance");
+ if (clip_distance_var)
+ *ClipDistanceArraySize = clip_distance_var->type->length;
+ } else {
+ *UsesClipDistance = false;
+ }
}
*
* \param shader Vertex shader executable to be verified
*/
-bool
+void
validate_vertex_shader_executable(struct gl_shader_program *prog,
struct gl_shader *shader)
{
if (shader == NULL)
- return true;
+ return;
/* From the GLSL 1.10 spec, page 48:
*
find.run(shader->ir);
if (!find.variable_found()) {
linker_error(prog, "vertex shader does not write to `gl_Position'\n");
- return false;
- }
- }
-
- prog->Vert.ClipDistanceArraySize = 0;
-
- if (!prog->IsES && prog->Version >= 130) {
- /* From section 7.1 (Vertex Shader Special Variables) of the
- * GLSL 1.30 spec:
- *
- * "It is an error for a shader to statically write both
- * gl_ClipVertex and gl_ClipDistance."
- *
- * This does not apply to GLSL ES shaders, since GLSL ES defines neither
- * gl_ClipVertex nor gl_ClipDistance.
- */
- find_assignment_visitor clip_vertex("gl_ClipVertex");
- find_assignment_visitor clip_distance("gl_ClipDistance");
-
- clip_vertex.run(shader->ir);
- clip_distance.run(shader->ir);
- if (clip_vertex.variable_found() && clip_distance.variable_found()) {
- linker_error(prog, "vertex shader writes to both `gl_ClipVertex' "
- "and `gl_ClipDistance'\n");
- return false;
+ return;
}
- prog->Vert.UsesClipDistance = clip_distance.variable_found();
- ir_variable *clip_distance_var =
- shader->symbols->get_variable("gl_ClipDistance");
- if (clip_distance_var)
- prog->Vert.ClipDistanceArraySize = clip_distance_var->type->length;
}
- return true;
+ analyze_clip_usage("vertex", prog, shader, &prog->Vert.UsesClipDistance,
+ &prog->Vert.ClipDistanceArraySize);
}
*
* \param shader Fragment shader executable to be verified
*/
-bool
+void
validate_fragment_shader_executable(struct gl_shader_program *prog,
struct gl_shader *shader)
{
if (shader == NULL)
- return true;
+ return;
find_assignment_visitor frag_color("gl_FragColor");
find_assignment_visitor frag_data("gl_FragData");
if (frag_color.variable_found() && frag_data.variable_found()) {
linker_error(prog, "fragment shader writes to both "
"`gl_FragColor' and `gl_FragData'\n");
- return false;
}
-
- return true;
}
-
/**
- * Generate a string describing the mode of a variable
+ * Verify that a geometry shader executable meets all semantic requirements
+ *
+ * Also sets prog->Geom.VerticesIn, prog->Geom.UsesClipDistance, and
+ * prog->Geom.ClipDistanceArraySize as a side effect.
+ *
+ * \param shader Geometry shader executable to be verified
*/
-static const char *
-mode_string(const ir_variable *var)
+void
+validate_geometry_shader_executable(struct gl_shader_program *prog,
+ struct gl_shader *shader)
{
- switch (var->mode) {
- case ir_var_auto:
- return (var->read_only) ? "global constant" : "global variable";
+ if (shader == NULL)
+ return;
- case ir_var_uniform: return "uniform";
- case ir_var_shader_in: return "shader input";
- case ir_var_shader_out: return "shader output";
+ unsigned num_vertices = vertices_per_prim(prog->Geom.InputType);
+ prog->Geom.VerticesIn = num_vertices;
- case ir_var_const_in:
- case ir_var_temporary:
- default:
- assert(!"Should not get here.");
- return "invalid variable";
- }
+ analyze_clip_usage("geometry", prog, shader, &prog->Geom.UsesClipDistance,
+ &prog->Geom.ClipDistanceArraySize);
+
+ find_end_primitive_visitor end_primitive;
+ end_primitive.run(shader->ir);
+ prog->Geom.UsesEndPrimitive = end_primitive.end_primitive_found();
}
/**
* Perform validation of global variables used across multiple shaders
*/
-bool
+void
cross_validate_globals(struct gl_shader_program *prog,
struct gl_shader **shader_list,
unsigned num_shaders,
if (var == NULL)
continue;
- if (uniforms_only && (var->mode != ir_var_uniform))
+ if (uniforms_only && (var->data.mode != ir_var_uniform))
continue;
/* Don't cross validate temporaries that are at global scope. These
* will eventually get pulled into the shaders 'main'.
*/
- if (var->mode == ir_var_temporary)
+ if (var->data.mode == ir_var_temporary)
continue;
/* If a global with this name has already been seen, verify that the
mode_string(var),
var->name, var->type->name,
existing->type->name);
- return false;
+ return;
}
}
- if (var->explicit_location) {
- if (existing->explicit_location
- && (var->location != existing->location)) {
+ if (var->data.explicit_location) {
+ if (existing->data.explicit_location
+ && (var->data.location != existing->data.location)) {
linker_error(prog, "explicit locations for %s "
"`%s' have differing values\n",
mode_string(var), var->name);
- return false;
+ return;
}
- existing->location = var->location;
- existing->explicit_location = true;
+ existing->data.location = var->data.location;
+ existing->data.explicit_location = true;
}
+ /* From the GLSL 4.20 specification:
+ * "A link error will result if two compilation units in a program
+ * specify different integer-constant bindings for the same
+ * opaque-uniform name. However, it is not an error to specify a
+ * binding on some but not all declarations for the same name"
+ */
+ if (var->data.explicit_binding) {
+ if (existing->data.explicit_binding &&
+ var->data.binding != existing->data.binding) {
+ linker_error(prog, "explicit bindings for %s "
+ "`%s' have differing values\n",
+ mode_string(var), var->name);
+ return;
+ }
+
+ existing->data.binding = var->data.binding;
+ existing->data.explicit_binding = true;
+ }
+
+ if (var->type->contains_atomic() &&
+ var->data.atomic.offset != existing->data.atomic.offset) {
+ linker_error(prog, "offset specifications for %s "
+ "`%s' have differing values\n",
+ mode_string(var), var->name);
+ return;
+ }
+
/* Validate layout qualifiers for gl_FragDepth.
*
* From the AMD/ARB_conservative_depth specs:
* of qualifiers."
*/
if (strcmp(var->name, "gl_FragDepth") == 0) {
- bool layout_declared = var->depth_layout != ir_depth_layout_none;
+ bool layout_declared = var->data.depth_layout != ir_depth_layout_none;
bool layout_differs =
- var->depth_layout != existing->depth_layout;
+ var->data.depth_layout != existing->data.depth_layout;
if (layout_declared && layout_differs) {
linker_error(prog,
"the same set of qualifiers.");
}
- if (var->used && layout_differs) {
+ if (var->data.used && layout_differs) {
linker_error(prog,
"If gl_FragDepth is redeclared with a layout "
"qualifier in any fragment shader, it must be "
linker_error(prog, "initializers for %s "
"`%s' have differing values\n",
mode_string(var), var->name);
- return false;
+ return;
}
} else {
/* If the first-seen instance of a particular uniform did not
}
}
- if (var->has_initializer) {
- if (existing->has_initializer
+ if (var->data.has_initializer) {
+ if (existing->data.has_initializer
&& (var->constant_initializer == NULL
|| existing->constant_initializer == NULL)) {
linker_error(prog,
"shared global variable `%s' has multiple "
"non-constant initializers.\n",
var->name);
- return false;
+ return;
}
/* Some instance had an initializer, so keep track of that. In
* otherwise) will propagate the existence to the variable
* stored in the symbol table.
*/
- existing->has_initializer = true;
+ existing->data.has_initializer = true;
}
- if (existing->invariant != var->invariant) {
+ if (existing->data.invariant != var->data.invariant) {
linker_error(prog, "declarations for %s `%s' have "
"mismatching invariant qualifiers\n",
mode_string(var), var->name);
- return false;
+ return;
}
- if (existing->centroid != var->centroid) {
+ if (existing->data.centroid != var->data.centroid) {
linker_error(prog, "declarations for %s `%s' have "
"mismatching centroid qualifiers\n",
mode_string(var), var->name);
- return false;
+ return;
+ }
+ if (existing->data.sample != var->data.sample) {
+ linker_error(prog, "declarations for %s `%s` have "
+ "mismatching sample qualifiers\n",
+ mode_string(var), var->name);
+ return;
}
} else
variables.add_variable(var);
}
}
-
- return true;
}
/**
* Perform validation of uniforms used across multiple shader stages
*/
-bool
+void
cross_validate_uniforms(struct gl_shader_program *prog)
{
- return cross_validate_globals(prog, prog->_LinkedShaders,
- MESA_SHADER_TYPES, true);
+ cross_validate_globals(prog, prog->_LinkedShaders,
+ MESA_SHADER_TYPES, true);
}
/**
virtual ir_visitor_status visit(ir_dereference_variable *ir)
{
- if (ir->var->mode == ir_var_temporary) {
+ if (ir->var->data.mode == ir_var_temporary) {
ir_variable *var = (ir_variable *) hash_table_find(temps, ir->var);
assert(var != NULL);
continue;
ir_variable *var = inst->as_variable();
- if ((var != NULL) && (var->mode != ir_var_temporary))
+ if ((var != NULL) && (var->data.mode != ir_var_temporary))
continue;
assert(inst->as_assignment()
|| inst->as_call()
|| inst->as_if() /* for initializers with the ?: operator */
- || ((var != NULL) && (var->mode == ir_var_temporary)));
+ || ((var != NULL) && (var->data.mode == ir_var_temporary)));
if (make_copies) {
inst = inst->clone(target, NULL);
* We don't have to check for multiple definitions of main (in multiple
* shaders) because that would have already been caught above.
*/
- ir_function_signature *sig = f->matching_signature(&void_parameters);
+ ir_function_signature *sig = f->matching_signature(NULL, &void_parameters);
if ((sig != NULL) && sig->is_defined) {
return sig;
}
*/
class array_sizing_visitor : public ir_hierarchical_visitor {
public:
+ array_sizing_visitor()
+ : mem_ctx(ralloc_context(NULL)),
+ unnamed_interfaces(hash_table_ctor(0, hash_table_pointer_hash,
+ hash_table_pointer_compare))
+ {
+ }
+
+ ~array_sizing_visitor()
+ {
+ hash_table_dtor(this->unnamed_interfaces);
+ ralloc_free(this->mem_ctx);
+ }
+
virtual ir_visitor_status visit(ir_variable *var)
{
- if (var->type->is_array() && (var->type->length == 0)) {
- const glsl_type *type =
- glsl_type::get_array_instance(var->type->fields.array,
- var->max_array_access + 1);
- assert(type != NULL);
- var->type = type;
+ fixup_type(&var->type, var->data.max_array_access);
+ if (var->type->is_interface()) {
+ if (interface_contains_unsized_arrays(var->type)) {
+ const glsl_type *new_type =
+ resize_interface_members(var->type, var->max_ifc_array_access);
+ var->type = new_type;
+ var->change_interface_type(new_type);
+ }
+ } else if (var->type->is_array() &&
+ var->type->fields.array->is_interface()) {
+ if (interface_contains_unsized_arrays(var->type->fields.array)) {
+ const glsl_type *new_type =
+ resize_interface_members(var->type->fields.array,
+ var->max_ifc_array_access);
+ var->change_interface_type(new_type);
+ var->type =
+ glsl_type::get_array_instance(new_type, var->type->length);
+ }
+ } else if (const glsl_type *ifc_type = var->get_interface_type()) {
+ /* Store a pointer to the variable in the unnamed_interfaces
+ * hashtable.
+ */
+ ir_variable **interface_vars = (ir_variable **)
+ hash_table_find(this->unnamed_interfaces, ifc_type);
+ if (interface_vars == NULL) {
+ interface_vars = rzalloc_array(mem_ctx, ir_variable *,
+ ifc_type->length);
+ hash_table_insert(this->unnamed_interfaces, interface_vars,
+ ifc_type);
+ }
+ unsigned index = ifc_type->field_index(var->name);
+ assert(index < ifc_type->length);
+ assert(interface_vars[index] == NULL);
+ interface_vars[index] = var;
}
return visit_continue;
}
+
+ /**
+ * For each unnamed interface block that was discovered while running the
+ * visitor, adjust the interface type to reflect the newly assigned array
+ * sizes, and fix up the ir_variable nodes to point to the new interface
+ * type.
+ */
+ void fixup_unnamed_interface_types()
+ {
+ hash_table_call_foreach(this->unnamed_interfaces,
+ fixup_unnamed_interface_type, NULL);
+ }
+
+private:
+ /**
+ * If the type pointed to by \c type represents an unsized array, replace
+ * it with a sized array whose size is determined by max_array_access.
+ */
+ static void fixup_type(const glsl_type **type, unsigned max_array_access)
+ {
+ if ((*type)->is_unsized_array()) {
+ *type = glsl_type::get_array_instance((*type)->fields.array,
+ max_array_access + 1);
+ assert(*type != NULL);
+ }
+ }
+
+ /**
+ * Determine whether the given interface type contains unsized arrays (if
+ * it doesn't, array_sizing_visitor doesn't need to process it).
+ */
+ static bool interface_contains_unsized_arrays(const glsl_type *type)
+ {
+ for (unsigned i = 0; i < type->length; i++) {
+ const glsl_type *elem_type = type->fields.structure[i].type;
+ if (elem_type->is_unsized_array())
+ return true;
+ }
+ return false;
+ }
+
+ /**
+ * Create a new interface type based on the given type, with unsized arrays
+ * replaced by sized arrays whose size is determined by
+ * max_ifc_array_access.
+ */
+ static const glsl_type *
+ resize_interface_members(const glsl_type *type,
+ const unsigned *max_ifc_array_access)
+ {
+ unsigned num_fields = type->length;
+ glsl_struct_field *fields = new glsl_struct_field[num_fields];
+ memcpy(fields, type->fields.structure,
+ num_fields * sizeof(*fields));
+ for (unsigned i = 0; i < num_fields; i++) {
+ fixup_type(&fields[i].type, max_ifc_array_access[i]);
+ }
+ glsl_interface_packing packing =
+ (glsl_interface_packing) type->interface_packing;
+ const glsl_type *new_ifc_type =
+ glsl_type::get_interface_instance(fields, num_fields,
+ packing, type->name);
+ delete [] fields;
+ return new_ifc_type;
+ }
+
+ static void fixup_unnamed_interface_type(const void *key, void *data,
+ void *)
+ {
+ const glsl_type *ifc_type = (const glsl_type *) key;
+ ir_variable **interface_vars = (ir_variable **) data;
+ unsigned num_fields = ifc_type->length;
+ glsl_struct_field *fields = new glsl_struct_field[num_fields];
+ memcpy(fields, ifc_type->fields.structure,
+ num_fields * sizeof(*fields));
+ bool interface_type_changed = false;
+ for (unsigned i = 0; i < num_fields; i++) {
+ if (interface_vars[i] != NULL &&
+ fields[i].type != interface_vars[i]->type) {
+ fields[i].type = interface_vars[i]->type;
+ interface_type_changed = true;
+ }
+ }
+ if (!interface_type_changed) {
+ delete [] fields;
+ return;
+ }
+ glsl_interface_packing packing =
+ (glsl_interface_packing) ifc_type->interface_packing;
+ const glsl_type *new_ifc_type =
+ glsl_type::get_interface_instance(fields, num_fields, packing,
+ ifc_type->name);
+ delete [] fields;
+ for (unsigned i = 0; i < num_fields; i++) {
+ if (interface_vars[i] != NULL)
+ interface_vars[i]->change_interface_type(new_ifc_type);
+ }
+ }
+
+ /**
+ * Memory context used to allocate the data in \c unnamed_interfaces.
+ */
+ void *mem_ctx;
+
+ /**
+ * Hash table from const glsl_type * to an array of ir_variable *'s
+ * pointing to the ir_variables constituting each unnamed interface block.
+ */
+ hash_table *unnamed_interfaces;
};
+/**
+ * Performs the cross-validation of geometry shader max_vertices and
+ * primitive type layout qualifiers for the attached geometry shaders,
+ * and propagates them to the linked GS and linked shader program.
+ */
+static void
+link_gs_inout_layout_qualifiers(struct gl_shader_program *prog,
+ struct gl_shader *linked_shader,
+ struct gl_shader **shader_list,
+ unsigned num_shaders)
+{
+ linked_shader->Geom.VerticesOut = 0;
+ linked_shader->Geom.InputType = PRIM_UNKNOWN;
+ linked_shader->Geom.OutputType = PRIM_UNKNOWN;
+
+ /* No in/out qualifiers defined for anything but GLSL 1.50+
+ * geometry shaders so far.
+ */
+ if (linked_shader->Type != GL_GEOMETRY_SHADER || prog->Version < 150)
+ return;
+
+ /* From the GLSL 1.50 spec, page 46:
+ *
+ * "All geometry shader output layout declarations in a program
+ * must declare the same layout and same value for
+ * max_vertices. There must be at least one geometry output
+ * layout declaration somewhere in a program, but not all
+ * geometry shaders (compilation units) are required to
+ * declare it."
+ */
+
+ for (unsigned i = 0; i < num_shaders; i++) {
+ struct gl_shader *shader = shader_list[i];
+
+ if (shader->Geom.InputType != PRIM_UNKNOWN) {
+ if (linked_shader->Geom.InputType != PRIM_UNKNOWN &&
+ linked_shader->Geom.InputType != shader->Geom.InputType) {
+ linker_error(prog, "geometry shader defined with conflicting "
+ "input types\n");
+ return;
+ }
+ linked_shader->Geom.InputType = shader->Geom.InputType;
+ }
+
+ if (shader->Geom.OutputType != PRIM_UNKNOWN) {
+ if (linked_shader->Geom.OutputType != PRIM_UNKNOWN &&
+ linked_shader->Geom.OutputType != shader->Geom.OutputType) {
+ linker_error(prog, "geometry shader defined with conflicting "
+ "output types\n");
+ return;
+ }
+ linked_shader->Geom.OutputType = shader->Geom.OutputType;
+ }
+
+ if (shader->Geom.VerticesOut != 0) {
+ if (linked_shader->Geom.VerticesOut != 0 &&
+ linked_shader->Geom.VerticesOut != shader->Geom.VerticesOut) {
+ linker_error(prog, "geometry shader defined with conflicting "
+ "output vertex count (%d and %d)\n",
+ linked_shader->Geom.VerticesOut,
+ shader->Geom.VerticesOut);
+ return;
+ }
+ linked_shader->Geom.VerticesOut = shader->Geom.VerticesOut;
+ }
+ }
+
+ /* Just do the intrastage -> interstage propagation right now,
+ * since we already know we're in the right type of shader program
+ * for doing it.
+ */
+ if (linked_shader->Geom.InputType == PRIM_UNKNOWN) {
+ linker_error(prog,
+ "geometry shader didn't declare primitive input type\n");
+ return;
+ }
+ prog->Geom.InputType = linked_shader->Geom.InputType;
+
+ if (linked_shader->Geom.OutputType == PRIM_UNKNOWN) {
+ linker_error(prog,
+ "geometry shader didn't declare primitive output type\n");
+ return;
+ }
+ prog->Geom.OutputType = linked_shader->Geom.OutputType;
+
+ if (linked_shader->Geom.VerticesOut == 0) {
+ linker_error(prog,
+ "geometry shader didn't declare max_vertices\n");
+ return;
+ }
+ prog->Geom.VerticesOut = linked_shader->Geom.VerticesOut;
+}
+
/**
* Combine a group of shaders for a single stage to generate a linked shader
*
/* Check that global variables defined in multiple shaders are consistent.
*/
- if (!cross_validate_globals(prog, shader_list, num_shaders, false))
+ cross_validate_globals(prog, shader_list, num_shaders, false);
+ if (!prog->LinkStatus)
return NULL;
/* Check that interface blocks defined in multiple shaders are consistent.
*/
- if (!validate_intrastage_interface_blocks((const gl_shader **)shader_list,
- num_shaders))
+ validate_intrastage_interface_blocks(prog, (const gl_shader **)shader_list,
+ num_shaders);
+ if (!prog->LinkStatus)
return NULL;
- /* Check that uniform blocks between shaders for a stage agree. */
- const int num_uniform_blocks =
+ /* Link up uniform blocks defined within this stage. */
+ const unsigned num_uniform_blocks =
link_uniform_blocks(mem_ctx, prog, shader_list, num_shaders,
&uniform_blocks);
- if (num_uniform_blocks < 0)
- return NULL;
/* Check that there is only a single definition of each function signature
* across all shaders.
ir_function_signature *sig =
(ir_function_signature *) iter.get();
- if (!sig->is_defined || sig->is_builtin)
+ if (!sig->is_defined || sig->is_builtin())
continue;
ir_function_signature *other_sig =
- other->exact_matching_signature(& sig->parameters);
+ other->exact_matching_signature(NULL, &sig->parameters);
if ((other_sig != NULL) && other_sig->is_defined
- && !other_sig->is_builtin) {
+ && !other_sig->is_builtin()) {
linker_error(prog, "function `%s' is multiply defined",
f->name);
return NULL;
linked->NumUniformBlocks = num_uniform_blocks;
ralloc_steal(linked, linked->UniformBlocks);
+ link_gs_inout_layout_qualifiers(prog, linked, shader_list, num_shaders);
+
populate_symbol_table(linked);
/* The a pointer to the main function in the final linked shader (i.e., the
insertion_point, true, linked);
}
- /* Resolve initializers for global variables in the linked shader.
- */
- unsigned num_linking_shaders = num_shaders;
- for (unsigned i = 0; i < num_shaders; i++)
- num_linking_shaders += shader_list[i]->num_builtins_to_link;
+ /* Check if any shader needs built-in functions. */
+ bool need_builtins = false;
+ for (unsigned i = 0; i < num_shaders; i++) {
+ if (shader_list[i]->uses_builtin_functions) {
+ need_builtins = true;
+ break;
+ }
+ }
- gl_shader **linking_shaders =
- (gl_shader **) calloc(num_linking_shaders, sizeof(gl_shader *));
+ bool ok;
+ if (need_builtins) {
+ /* Make a temporary array one larger than shader_list, which will hold
+ * the built-in function shader as well.
+ */
+ gl_shader **linking_shaders = (gl_shader **)
+ calloc(num_shaders + 1, sizeof(gl_shader *));
+ memcpy(linking_shaders, shader_list, num_shaders * sizeof(gl_shader *));
+ linking_shaders[num_shaders] = _mesa_glsl_get_builtin_function_shader();
- memcpy(linking_shaders, shader_list,
- sizeof(linking_shaders[0]) * num_shaders);
+ ok = link_function_calls(prog, linked, linking_shaders, num_shaders + 1);
- unsigned idx = num_shaders;
- for (unsigned i = 0; i < num_shaders; i++) {
- memcpy(&linking_shaders[idx], shader_list[i]->builtins_to_link,
- sizeof(linking_shaders[0]) * shader_list[i]->num_builtins_to_link);
- idx += shader_list[i]->num_builtins_to_link;
+ free(linking_shaders);
+ } else {
+ ok = link_function_calls(prog, linked, shader_list, num_shaders);
}
- assert(idx == num_linking_shaders);
- if (!link_function_calls(prog, linked, linking_shaders,
- num_linking_shaders)) {
+ if (!ok) {
ctx->Driver.DeleteShader(ctx, linked);
- linked = NULL;
+ return NULL;
}
- free(linking_shaders);
-
/* At this point linked should contain all of the linked IR, so
* validate it to make sure nothing went wrong.
*/
- if (linked)
- validate_ir_tree(linked->ir);
+ validate_ir_tree(linked->ir);
+
+ /* Set the size of geometry shader input arrays */
+ if (linked->Type == GL_GEOMETRY_SHADER) {
+ unsigned num_vertices = vertices_per_prim(prog->Geom.InputType);
+ geom_array_resize_visitor input_resize_visitor(num_vertices, prog);
+ foreach_iter(exec_list_iterator, iter, *linked->ir) {
+ ir_instruction *ir = (ir_instruction *)iter.get();
+ ir->accept(&input_resize_visitor);
+ }
+ }
/* Make a pass over all variable declarations to ensure that arrays with
* unspecified sizes have a size specified. The size is inferred from the
* max_array_access field.
*/
- if (linked != NULL) {
- array_sizing_visitor v;
-
- v.run(linked->ir);
- }
+ array_sizing_visitor v;
+ v.run(linked->ir);
+ v.fixup_unnamed_interface_types();
return linked;
}
foreach_list(node, prog->_LinkedShaders[i]->ir) {
ir_variable *const var = ((ir_instruction *) node)->as_variable();
- if ((var == NULL) || (var->mode != ir_var_uniform &&
- var->mode != ir_var_shader_in &&
- var->mode != ir_var_shader_out) ||
+ if ((var == NULL) || (var->data.mode != ir_var_uniform) ||
!var->type->is_array())
continue;
/* GL_ARB_uniform_buffer_object says that std140 uniforms
* will not be eliminated. Since we always do std140, just
* don't resize arrays in UBOs.
+ *
+ * Atomic counters are supposed to get deterministic
+ * locations assigned based on the declaration ordering and
+ * sizes, array compaction would mess that up.
*/
- if (var->is_in_uniform_block())
+ if (var->is_in_uniform_block() || var->type->contains_atomic())
continue;
- unsigned int size = var->max_array_access;
+ unsigned int size = var->data.max_array_access;
for (unsigned j = 0; j < MESA_SHADER_TYPES; j++) {
if (prog->_LinkedShaders[j] == NULL)
continue;
continue;
if (strcmp(var->name, other_var->name) == 0 &&
- other_var->max_array_access > size) {
- size = other_var->max_array_access;
+ other_var->data.max_array_access > size) {
+ size = other_var->data.max_array_access;
}
}
}
- if (size + 1 != var->type->fields.array->length) {
+ if (size + 1 != var->type->length) {
/* If this is a built-in uniform (i.e., it's backed by some
* fixed-function state), adjust the number of state slots to
* match the new array size. The number of slots per array entry
foreach_list(node, sh->ir) {
ir_variable *const var = ((ir_instruction *) node)->as_variable();
- if ((var == NULL) || (var->mode != (unsigned) direction))
+ if ((var == NULL) || (var->data.mode != (unsigned) direction))
continue;
- if (var->explicit_location) {
- if ((var->location >= (int)(max_index + generic_base))
- || (var->location < 0)) {
+ if (var->data.explicit_location) {
+ if ((var->data.location >= (int)(max_index + generic_base))
+ || (var->data.location < 0)) {
linker_error(prog,
"invalid explicit location %d specified for `%s'\n",
- (var->location < 0)
- ? var->location : var->location - generic_base,
+ (var->data.location < 0)
+ ? var->data.location
+ : var->data.location - generic_base,
var->name);
return false;
}
if (prog->AttributeBindings->get(binding, var->name)) {
assert(binding >= VERT_ATTRIB_GENERIC0);
- var->location = binding;
- var->is_unmatched_generic_inout = 0;
+ var->data.location = binding;
+ var->data.is_unmatched_generic_inout = 0;
}
} else if (target_index == MESA_SHADER_FRAGMENT) {
unsigned binding;
if (prog->FragDataBindings->get(binding, var->name)) {
assert(binding >= FRAG_RESULT_DATA0);
- var->location = binding;
- var->is_unmatched_generic_inout = 0;
+ var->data.location = binding;
+ var->data.is_unmatched_generic_inout = 0;
if (prog->FragDataIndexBindings->get(index, var->name)) {
- var->index = index;
+ var->data.index = index;
}
}
}
* that it doesn't collide with other assigned locations. Otherwise,
* add it to the list of variables that need linker-assigned locations.
*/
- const unsigned slots = count_attribute_slots(var->type);
- if (var->location != -1) {
- if (var->location >= generic_base && var->index < 1) {
+ const unsigned slots = var->type->count_attribute_slots();
+ if (var->data.location != -1) {
+ if (var->data.location >= generic_base && var->data.index < 1) {
/* From page 61 of the OpenGL 4.0 spec:
*
* "LinkProgram will fail if the attribute bindings assigned
/* Mask representing the contiguous slots that will be used by
* this attribute.
*/
- const unsigned attr = var->location - generic_base;
+ const unsigned attr = var->data.location - generic_base;
const unsigned use_mask = (1 << slots) - 1;
/* Generate a link error if the set of bits requested for this
return false;
}
- to_assign[i].var->location = generic_base + location;
- to_assign[i].var->is_unmatched_generic_inout = 0;
+ to_assign[i].var->data.location = generic_base + location;
+ to_assign[i].var->data.is_unmatched_generic_inout = 0;
used_locations |= (use_mask << location);
}
foreach_list(node, sh->ir) {
ir_variable *const var = ((ir_instruction *) node)->as_variable();
- if ((var == NULL) || (var->mode != int(mode)))
+ if ((var == NULL) || (var->data.mode != int(mode)))
continue;
/* A shader 'in' or 'out' variable is only really an input or output if
* its value is used by other shader stages. This will cause the variable
* to have a location assigned.
*/
- if (var->is_unmatched_generic_inout) {
- var->mode = ir_var_auto;
+ if (var->data.is_unmatched_generic_inout) {
+ var->data.mode = ir_var_auto;
}
}
}
foreach_list(node, ir) {
ir_variable *const var = ((ir_instruction *) node)->as_variable();
- if (var == NULL || var->mode != ir_var_shader_out) {
+ if (var == NULL || var->data.mode != ir_var_shader_out) {
continue;
}
if (strcmp(var->name, "gl_FragDepth") == 0) {
- switch (var->depth_layout) {
+ switch (var->data.depth_layout) {
case ir_depth_layout_none:
prog->FragDepthLayout = FRAG_DEPTH_LAYOUT_NONE;
return;
/**
* Validate the resources used by a program versus the implementation limits
*/
-static bool
+static void
check_resources(struct gl_context *ctx, struct gl_shader_program *prog)
{
static const char *const shader_names[MESA_SHADER_TYPES] = {
}
}
}
-
- return prog->LinkStatus;
}
void
void *mem_ctx = ralloc_context(NULL); // temporary linker context
- prog->LinkStatus = false;
+ prog->LinkStatus = true; /* All error paths will set this to false */
prog->Validated = false;
prog->_Used = false;
prog->UniformBlockStageIndex[i] = NULL;
}
+ ralloc_free(prog->AtomicBuffers);
+ prog->AtomicBuffers = NULL;
+ prog->NumAtomicBuffers = 0;
+
/* Separate the shaders into groups based on their type.
*/
struct gl_shader **vert_shader_list;
unsigned num_vert_shaders = 0;
struct gl_shader **frag_shader_list;
unsigned num_frag_shaders = 0;
+ struct gl_shader **geom_shader_list;
+ unsigned num_geom_shaders = 0;
vert_shader_list = (struct gl_shader **)
- calloc(2 * prog->NumShaders, sizeof(struct gl_shader *));
- frag_shader_list = &vert_shader_list[prog->NumShaders];
+ calloc(prog->NumShaders, sizeof(struct gl_shader *));
+ frag_shader_list = (struct gl_shader **)
+ calloc(prog->NumShaders, sizeof(struct gl_shader *));
+ geom_shader_list = (struct gl_shader **)
+ calloc(prog->NumShaders, sizeof(struct gl_shader *));
unsigned min_version = UINT_MAX;
unsigned max_version = 0;
num_frag_shaders++;
break;
case GL_GEOMETRY_SHADER:
- /* FINISHME: Support geometry shaders. */
- assert(prog->Shaders[i]->Type != GL_GEOMETRY_SHADER);
+ geom_shader_list[num_geom_shaders] = prog->Shaders[i];
+ num_geom_shaders++;
break;
}
}
- /* Previous to GLSL version 1.30, different compilation units could mix and
- * match shading language versions. With GLSL 1.30 and later, the versions
- * of all shaders must match.
- *
- * GLSL ES has never allowed mixing of shading language versions.
+ /* In desktop GLSL, different shader versions may be linked together. In
+ * GLSL ES, all shader versions must be the same.
*/
- if ((is_es_prog || max_version >= 130)
- && min_version != max_version) {
+ if (is_es_prog && min_version != max_version) {
linker_error(prog, "all shaders must use same shading "
"language version\n");
goto done;
prog->Version = max_version;
prog->IsES = is_es_prog;
+ /* Geometry shaders have to be linked with vertex shaders.
+ */
+ if (num_geom_shaders > 0 && num_vert_shaders == 0) {
+ linker_error(prog, "Geometry shader must be linked with "
+ "vertex shader\n");
+ goto done;
+ }
+
for (unsigned int i = 0; i < MESA_SHADER_TYPES; i++) {
if (prog->_LinkedShaders[i] != NULL)
ctx->Driver.DeleteShader(ctx, prog->_LinkedShaders[i]);
link_intrastage_shaders(mem_ctx, ctx, prog, vert_shader_list,
num_vert_shaders);
- if (sh == NULL)
+ if (!prog->LinkStatus)
goto done;
- if (!validate_vertex_shader_executable(prog, sh))
+ validate_vertex_shader_executable(prog, sh);
+ if (!prog->LinkStatus)
goto done;
+ prog->LastClipDistanceArraySize = prog->Vert.ClipDistanceArraySize;
_mesa_reference_shader(ctx, &prog->_LinkedShaders[MESA_SHADER_VERTEX],
sh);
link_intrastage_shaders(mem_ctx, ctx, prog, frag_shader_list,
num_frag_shaders);
- if (sh == NULL)
+ if (!prog->LinkStatus)
goto done;
- if (!validate_fragment_shader_executable(prog, sh))
+ validate_fragment_shader_executable(prog, sh);
+ if (!prog->LinkStatus)
goto done;
_mesa_reference_shader(ctx, &prog->_LinkedShaders[MESA_SHADER_FRAGMENT],
sh);
}
+ if (num_geom_shaders > 0) {
+ gl_shader *const sh =
+ link_intrastage_shaders(mem_ctx, ctx, prog, geom_shader_list,
+ num_geom_shaders);
+
+ if (!prog->LinkStatus)
+ goto done;
+
+ validate_geometry_shader_executable(prog, sh);
+ if (!prog->LinkStatus)
+ goto done;
+ prog->LastClipDistanceArraySize = prog->Geom.ClipDistanceArraySize;
+
+ _mesa_reference_shader(ctx, &prog->_LinkedShaders[MESA_SHADER_GEOMETRY],
+ sh);
+ }
+
/* Here begins the inter-stage linking phase. Some initial validation is
* performed, then locations are assigned for uniforms, attributes, and
* varyings.
*/
- if (cross_validate_uniforms(prog)) {
- unsigned prev;
+ cross_validate_uniforms(prog);
+ if (!prog->LinkStatus)
+ goto done;
- for (prev = 0; prev < MESA_SHADER_TYPES; prev++) {
- if (prog->_LinkedShaders[prev] != NULL)
- break;
- }
+ unsigned prev;
- /* Validate the inputs of each stage with the output of the preceding
- * stage.
- */
- for (unsigned i = prev + 1; i < MESA_SHADER_TYPES; i++) {
- if (prog->_LinkedShaders[i] == NULL)
- continue;
+ for (prev = 0; prev < MESA_SHADER_TYPES; prev++) {
+ if (prog->_LinkedShaders[prev] != NULL)
+ break;
+ }
- if (!validate_interstage_interface_blocks(prog->_LinkedShaders[prev],
- prog->_LinkedShaders[i])) {
- linker_error(prog, "interface block mismatch between shader stages\n");
- goto done;
- }
+ /* Validate the inputs of each stage with the output of the preceding
+ * stage.
+ */
+ for (unsigned i = prev + 1; i < MESA_SHADER_TYPES; i++) {
+ if (prog->_LinkedShaders[i] == NULL)
+ continue;
- if (!cross_validate_outputs_to_inputs(prog,
- prog->_LinkedShaders[prev],
- prog->_LinkedShaders[i]))
- goto done;
+ validate_interstage_inout_blocks(prog, prog->_LinkedShaders[prev],
+ prog->_LinkedShaders[i]);
+ if (!prog->LinkStatus)
+ goto done;
- prev = i;
- }
+ cross_validate_outputs_to_inputs(prog,
+ prog->_LinkedShaders[prev],
+ prog->_LinkedShaders[i]);
+ if (!prog->LinkStatus)
+ goto done;
- prog->LinkStatus = true;
+ prev = i;
}
+ /* Cross-validate uniform blocks between shader stages */
+ validate_interstage_uniform_blocks(prog, prog->_LinkedShaders,
+ MESA_SHADER_TYPES);
+ if (!prog->LinkStatus)
+ goto done;
for (unsigned int i = 0; i < MESA_SHADER_TYPES; i++) {
if (prog->_LinkedShaders[i] != NULL)
/* Mark all generic shader inputs and outputs as unpaired. */
if (prog->_LinkedShaders[MESA_SHADER_VERTEX] != NULL) {
link_invalidate_variable_locations(
- prog->_LinkedShaders[MESA_SHADER_VERTEX],
- VERT_ATTRIB_GENERIC0, VARYING_SLOT_VAR0);
+ prog->_LinkedShaders[MESA_SHADER_VERTEX]->ir);
+ }
+ if (prog->_LinkedShaders[MESA_SHADER_GEOMETRY] != NULL) {
+ link_invalidate_variable_locations(
+ prog->_LinkedShaders[MESA_SHADER_GEOMETRY]->ir);
}
- /* FINISHME: Geometry shaders not implemented yet */
if (prog->_LinkedShaders[MESA_SHADER_FRAGMENT] != NULL) {
link_invalidate_variable_locations(
- prog->_LinkedShaders[MESA_SHADER_FRAGMENT],
- VARYING_SLOT_VAR0, FRAG_RESULT_DATA0);
+ prog->_LinkedShaders[MESA_SHADER_FRAGMENT]->ir);
}
/* FINISHME: The value of the max_attribute_index parameter is
goto done;
}
- unsigned prev;
- for (prev = 0; prev < MESA_SHADER_TYPES; prev++) {
- if (prog->_LinkedShaders[prev] != NULL)
+ unsigned first;
+ for (first = 0; first < MESA_SHADER_TYPES; first++) {
+ if (prog->_LinkedShaders[first] != NULL)
break;
}
* non-zero, but the program object has no vertex or geometry
* shader;
*/
- if (prev >= MESA_SHADER_FRAGMENT) {
+ if (first == MESA_SHADER_FRAGMENT) {
linker_error(prog, "Transform feedback varyings specified, but "
"no vertex or geometry shader is present.");
goto done;
goto done;
}
- for (unsigned i = prev + 1; i < MESA_SHADER_TYPES; i++) {
- if (prog->_LinkedShaders[i] == NULL)
- continue;
-
- if (!assign_varying_locations(
- ctx, mem_ctx, prog, prog->_LinkedShaders[prev], prog->_LinkedShaders[i],
- i == MESA_SHADER_FRAGMENT ? num_tfeedback_decls : 0,
- tfeedback_decls))
- goto done;
-
- prev = i;
+ /* Linking the stages in the opposite order (from fragment to vertex)
+ * ensures that inter-shader outputs written to in an earlier stage are
+ * eliminated if they are (transitively) not used in a later stage.
+ */
+ int last, next;
+ for (last = MESA_SHADER_TYPES-1; last >= 0; last--) {
+ if (prog->_LinkedShaders[last] != NULL)
+ break;
}
- if (prev != MESA_SHADER_FRAGMENT && num_tfeedback_decls != 0) {
- /* There was no fragment shader, but we still have to assign varying
- * locations for use by transform feedback.
- */
- if (!assign_varying_locations(
- ctx, mem_ctx, prog, prog->_LinkedShaders[prev], NULL, num_tfeedback_decls,
- tfeedback_decls))
- goto done;
- }
+ if (last >= 0 && last < MESA_SHADER_FRAGMENT) {
+ gl_shader *const sh = prog->_LinkedShaders[last];
+
+ if (num_tfeedback_decls != 0) {
+ /* There was no fragment shader, but we still have to assign varying
+ * locations for use by transform feedback.
+ */
+ if (!assign_varying_locations(ctx, mem_ctx, prog,
+ sh, NULL,
+ num_tfeedback_decls, tfeedback_decls,
+ 0))
+ goto done;
+ }
- if (!store_tfeedback_info(ctx, prog, num_tfeedback_decls, tfeedback_decls))
- goto done;
+ do_dead_builtin_varyings(ctx, sh, NULL,
+ num_tfeedback_decls, tfeedback_decls);
- if (prog->_LinkedShaders[MESA_SHADER_VERTEX] != NULL) {
- demote_shader_inputs_and_outputs(prog->_LinkedShaders[MESA_SHADER_VERTEX],
- ir_var_shader_out);
+ demote_shader_inputs_and_outputs(sh, ir_var_shader_out);
- /* Eliminate code that is now dead due to unused vertex outputs being
- * demoted.
+ /* Eliminate code that is now dead due to unused outputs being demoted.
*/
- while (do_dead_code(prog->_LinkedShaders[MESA_SHADER_VERTEX]->ir, false))
- ;
+ while (do_dead_code(sh->ir, false))
+ ;
}
+ else if (first == MESA_SHADER_FRAGMENT) {
+ /* If the program only contains a fragment shader...
+ */
+ gl_shader *const sh = prog->_LinkedShaders[first];
- if (prog->_LinkedShaders[MESA_SHADER_GEOMETRY] != NULL) {
- gl_shader *const sh = prog->_LinkedShaders[MESA_SHADER_GEOMETRY];
+ do_dead_builtin_varyings(ctx, NULL, sh,
+ num_tfeedback_decls, tfeedback_decls);
demote_shader_inputs_and_outputs(sh, ir_var_shader_in);
- demote_shader_inputs_and_outputs(sh, ir_var_shader_out);
- /* Eliminate code that is now dead due to unused geometry outputs being
- * demoted.
- */
- while (do_dead_code(prog->_LinkedShaders[MESA_SHADER_GEOMETRY]->ir, false))
- ;
+ while (do_dead_code(sh->ir, false))
+ ;
}
- if (prog->_LinkedShaders[MESA_SHADER_FRAGMENT] != NULL) {
- gl_shader *const sh = prog->_LinkedShaders[MESA_SHADER_FRAGMENT];
+ next = last;
+ for (int i = next - 1; i >= 0; i--) {
+ if (prog->_LinkedShaders[i] == NULL)
+ continue;
- demote_shader_inputs_and_outputs(sh, ir_var_shader_in);
+ gl_shader *const sh_i = prog->_LinkedShaders[i];
+ gl_shader *const sh_next = prog->_LinkedShaders[next];
+ unsigned gs_input_vertices =
+ next == MESA_SHADER_GEOMETRY ? prog->Geom.VerticesIn : 0;
- /* Eliminate code that is now dead due to unused fragment inputs being
- * demoted. This shouldn't actually do anything other than remove
- * declarations of the (now unused) global variables.
+ if (!assign_varying_locations(ctx, mem_ctx, prog, sh_i, sh_next,
+ next == MESA_SHADER_FRAGMENT ? num_tfeedback_decls : 0,
+ tfeedback_decls, gs_input_vertices))
+ goto done;
+
+ do_dead_builtin_varyings(ctx, sh_i, sh_next,
+ next == MESA_SHADER_FRAGMENT ? num_tfeedback_decls : 0,
+ tfeedback_decls);
+
+ demote_shader_inputs_and_outputs(sh_i, ir_var_shader_out);
+ demote_shader_inputs_and_outputs(sh_next, ir_var_shader_in);
+
+ /* Eliminate code that is now dead due to unused outputs being demoted.
*/
- while (do_dead_code(prog->_LinkedShaders[MESA_SHADER_FRAGMENT]->ir, false))
- ;
+ while (do_dead_code(sh_i->ir, false))
+ ;
+ while (do_dead_code(sh_next->ir, false))
+ ;
+
+ /* This must be done after all dead varyings are eliminated. */
+ if (!check_against_output_limit(ctx, prog, sh_i))
+ goto done;
+ if (!check_against_input_limit(ctx, prog, sh_next))
+ goto done;
+
+ next = i;
}
+ if (!store_tfeedback_info(ctx, prog, num_tfeedback_decls, tfeedback_decls))
+ goto done;
+
update_array_sizes(prog);
link_assign_uniform_locations(prog);
+ link_assign_atomic_counter_resources(ctx, prog);
store_fragdepth_layout(prog);
- if (!check_resources(ctx, prog))
+ check_resources(ctx, prog);
+ link_check_atomic_counter_resources(ctx, prog);
+
+ if (!prog->LinkStatus)
goto done;
/* OpenGL ES requires that a vertex shader and a fragment shader both be
done:
free(vert_shader_list);
+ free(frag_shader_list);
+ free(geom_shader_list);
for (unsigned i = 0; i < MESA_SHADER_TYPES; i++) {
if (prog->_LinkedShaders[i] == NULL)
continue;
+ /* Do a final validation step to make sure that the IR wasn't
+ * invalidated by any modifications performed after intrastage linking.
+ */
+ validate_ir_tree(prog->_LinkedShaders[i]->ir);
+
/* Retain any live IR, but trash the rest. */
reparent_ir(prog->_LinkedShaders[i]->ir, prog->_LinkedShaders[i]->ir);
projects / mesa.git / blobdiff