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Diffstat (limited to 'mesalib/src/glsl/ir_set_program_inouts.cpp')
-rw-r--r--mesalib/src/glsl/ir_set_program_inouts.cpp47
1 files changed, 34 insertions, 13 deletions
diff --git a/mesalib/src/glsl/ir_set_program_inouts.cpp b/mesalib/src/glsl/ir_set_program_inouts.cpp
index ae3ef74c7..8c2bc30d6 100644
--- a/mesalib/src/glsl/ir_set_program_inouts.cpp
+++ b/mesalib/src/glsl/ir_set_program_inouts.cpp
@@ -26,6 +26,8 @@
*
* Sets the InputsRead and OutputsWritten of Mesa programs.
*
+ * Additionally, for fragment shaders, sets the InterpQualifier array.
+ *
* Mesa programs (gl_program, not gl_shader_program) have a set of
* flags indicating which varyings are read and written. Computing
* which are actually read from some sort of backend code can be
@@ -42,9 +44,11 @@
class ir_set_program_inouts_visitor : public ir_hierarchical_visitor {
public:
- ir_set_program_inouts_visitor(struct gl_program *prog)
+ ir_set_program_inouts_visitor(struct gl_program *prog,
+ bool is_fragment_shader)
{
this->prog = prog;
+ this->is_fragment_shader = is_fragment_shader;
this->ht = hash_table_ctor(0,
hash_table_pointer_hash,
hash_table_pointer_compare);
@@ -61,10 +65,12 @@ public:
struct gl_program *prog;
struct hash_table *ht;
+ bool is_fragment_shader;
};
static void
-mark(struct gl_program *prog, ir_variable *var, int offset, int len)
+mark(struct gl_program *prog, ir_variable *var, int offset, int len,
+ bool is_fragment_shader)
{
/* As of GLSL 1.20, varyings can only be floats, floating-point
* vectors or matrices, or arrays of them. For Mesa programs using
@@ -75,12 +81,19 @@ mark(struct gl_program *prog, ir_variable *var, int offset, int len)
*/
for (int i = 0; i < len; i++) {
- if (var->mode == ir_var_in)
- prog->InputsRead |= BITFIELD64_BIT(var->location + offset + i);
- else if (var->mode == ir_var_system_value)
- prog->SystemValuesRead |= (1 << (var->location + offset + i));
- else
- prog->OutputsWritten |= BITFIELD64_BIT(var->location + offset + i);
+ GLbitfield64 bitfield = BITFIELD64_BIT(var->location + offset + i);
+ if (var->mode == ir_var_in) {
+ prog->InputsRead |= bitfield;
+ if (is_fragment_shader) {
+ gl_fragment_program *fprog = (gl_fragment_program *) prog;
+ fprog->InterpQualifier[var->location + offset + i] =
+ (glsl_interp_qualifier) var->interpolation;
+ }
+ } else if (var->mode == ir_var_system_value) {
+ prog->SystemValuesRead |= bitfield;
+ } else {
+ prog->OutputsWritten |= bitfield;
+ }
}
}
@@ -93,9 +106,11 @@ ir_set_program_inouts_visitor::visit(ir_dereference_variable *ir)
if (ir->type->is_array()) {
mark(this->prog, ir->var, 0,
- ir->type->length * ir->type->fields.array->matrix_columns);
+ ir->type->length * ir->type->fields.array->matrix_columns,
+ this->is_fragment_shader);
} else {
- mark(this->prog, ir->var, 0, ir->type->matrix_columns);
+ mark(this->prog, ir->var, 0, ir->type->matrix_columns,
+ this->is_fragment_shader);
}
return visit_continue;
@@ -121,7 +136,8 @@ ir_set_program_inouts_visitor::visit_enter(ir_dereference_array *ir)
width = deref_var->type->fields.array->matrix_columns;
}
- mark(this->prog, var, index->value.i[0] * width, width);
+ mark(this->prog, var, index->value.i[0] * width, width,
+ this->is_fragment_shader);
return visit_continue_with_parent;
}
@@ -151,12 +167,17 @@ ir_set_program_inouts_visitor::visit_enter(ir_function_signature *ir)
}
void
-do_set_program_inouts(exec_list *instructions, struct gl_program *prog)
+do_set_program_inouts(exec_list *instructions, struct gl_program *prog,
+ bool is_fragment_shader)
{
- ir_set_program_inouts_visitor v(prog);
+ ir_set_program_inouts_visitor v(prog, is_fragment_shader);
prog->InputsRead = 0;
prog->OutputsWritten = 0;
prog->SystemValuesRead = 0;
+ if (is_fragment_shader) {
+ memset(((gl_fragment_program *) prog)->InterpQualifier, 0,
+ sizeof(((gl_fragment_program *) prog)->InterpQualifier));
+ }
visit_list_elements(&v, instructions);
}