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authorNicolai Hähnle <[email protected]>2016-11-30 10:38:55 +0100
committerNicolai Hähnle <[email protected]>2016-12-12 09:03:47 +0100
commit173d80b40159669b303ea19e8b6abd24d7fce39b (patch)
treeca4e28a59a1edb334ad856c60d21038935b3b4ed /src/compiler/glsl
parent6092169b96edb1eb85fd195c426858d4430f9bb3 (diff)
glsl: remember per-component vertex streams for packed varyings
Reviewed-by: Marek Olšák <[email protected]>
Diffstat (limited to 'src/compiler/glsl')
-rw-r--r--src/compiler/glsl/ir.h3
-rw-r--r--src/compiler/glsl/ir_print_visitor.cpp14
-rw-r--r--src/compiler/glsl/lower_packed_varyings.cpp9
3 files changed, 24 insertions, 2 deletions
diff --git a/src/compiler/glsl/ir.h b/src/compiler/glsl/ir.h
index 24f510ea990..df3ccfd883f 100644
--- a/src/compiler/glsl/ir.h
+++ b/src/compiler/glsl/ir.h
@@ -917,6 +917,9 @@ public:
/**
* Vertex stream output identifier.
+ *
+ * For packed outputs, bit 31 is set and bits [2*i+1,2*i] indicate the
+ * stream of the i-th component.
*/
unsigned stream;
diff --git a/src/compiler/glsl/ir_print_visitor.cpp b/src/compiler/glsl/ir_print_visitor.cpp
index 703169eb976..d4014265ef3 100644
--- a/src/compiler/glsl/ir_print_visitor.cpp
+++ b/src/compiler/glsl/ir_print_visitor.cpp
@@ -177,6 +177,17 @@ void ir_print_visitor::visit(ir_variable *ir)
if (ir->data.explicit_component)
snprintf(component, sizeof(component), "component=%i ", ir->data.location_frac);
+ char stream[32] = {0};
+ if (ir->data.stream & (1u << 31)) {
+ if (ir->data.stream & ~(1u << 31)) {
+ snprintf(stream, sizeof(stream), "stream(%u,%u,%u,%u) ",
+ ir->data.stream & 3, (ir->data.stream >> 2) & 3,
+ (ir->data.stream >> 4) & 3, (ir->data.stream >> 6) & 3);
+ }
+ } else if (ir->data.stream) {
+ snprintf(stream, sizeof(stream), "stream%u ", ir->data.stream);
+ }
+
const char *const cent = (ir->data.centroid) ? "centroid " : "";
const char *const samp = (ir->data.sample) ? "sample " : "";
const char *const patc = (ir->data.patch) ? "patch " : "";
@@ -187,13 +198,12 @@ void ir_print_visitor::visit(ir_variable *ir)
"in ", "out ", "inout ",
"const_in ", "sys ", "temporary " };
STATIC_ASSERT(ARRAY_SIZE(mode) == ir_var_mode_count);
- const char *const stream [] = {"", "stream1 ", "stream2 ", "stream3 "};
const char *const interp[] = { "", "smooth", "flat", "noperspective" };
STATIC_ASSERT(ARRAY_SIZE(interp) == INTERP_MODE_COUNT);
fprintf(f, "(%s%s%s%s%s%s%s%s%s%s%s) ",
binding, loc, component, cent, samp, patc, inv, prec, mode[ir->data.mode],
- stream[ir->data.stream],
+ stream,
interp[ir->data.interpolation]);
print_type(f, ir->type);
diff --git a/src/compiler/glsl/lower_packed_varyings.cpp b/src/compiler/glsl/lower_packed_varyings.cpp
index b16f25fc93d..7a2f187229b 100644
--- a/src/compiler/glsl/lower_packed_varyings.cpp
+++ b/src/compiler/glsl/lower_packed_varyings.cpp
@@ -531,6 +531,14 @@ lower_packed_varyings_visitor::lower_rvalue(ir_rvalue *rvalue,
ir_dereference *packed_deref =
this->get_packed_varying_deref(location, unpacked_var, name,
vertex_index);
+ if (unpacked_var->data.stream != 0) {
+ assert(unpacked_var->data.stream < 4);
+ ir_variable *packed_var = packed_deref->variable_referenced();
+ for (unsigned i = 0; i < components; ++i) {
+ packed_var->data.stream |=
+ unpacked_var->data.stream << (2 * (location_frac + i));
+ }
+ }
ir_swizzle *swizzle = new(this->mem_ctx)
ir_swizzle(packed_deref, swizzle_values, components);
if (this->mode == ir_var_shader_out) {
@@ -639,6 +647,7 @@ lower_packed_varyings_visitor::get_packed_varying_deref(
packed_var->data.location = location;
packed_var->data.precision = unpacked_var->data.precision;
packed_var->data.always_active_io = unpacked_var->data.always_active_io;
+ packed_var->data.stream = 1u << 31;
unpacked_var->insert_before(packed_var);
this->packed_varyings[slot] = packed_var;
} else {