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Revert "glsl: geom shader max_vertices layout must match."

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This reverts commit 4c86399378.

The commit was erroneous because the ast_layout_expression class was
created to hold a list of values for a layout-qualifier-name which is
allowed to appear in more than one expression in the same
shader/program but not to hold different values.

In other words, the list is used for an after check that all the
declared values for a layout-qualifier-name are consistent.

Therefore, the values stored must match always, not just for
"max_vertices" or any other eventual layout-qualifier-name.

Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>
Signed-off-by: Andres Gomez <agomez@igalia.com>
This commit is contained in:
Andres Gomez
2016-10-22 17:13:16 +03:00
parent e5041c6409
commit 2a47c83d7e
3 changed files with 9 additions and 13 deletions
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3
src/compiler/glsl/ast.h
View File

@@ -377,8 +377,7 @@ public:
bool process_qualifier_constant(struct _mesa_glsl_parse_state *state,
const char *qual_indentifier,
unsigned *value, bool can_be_zero,
bool must_match = false);
unsigned *value, bool can_be_zero);
void merge_qualifier(ast_layout_expression *l_expr)
{

17
src/compiler/glsl/ast_type.cpp
View File

@@ -769,8 +769,7 @@ bool
ast_layout_expression::process_qualifier_constant(struct _mesa_glsl_parse_state *state,
const char *qual_indentifier,
unsigned *value,
bool can_be_zero,
bool must_match)
bool can_be_zero)
{
int min_value = 0;
bool first_pass = true;
@@ -808,14 +807,12 @@ ast_layout_expression::process_qualifier_constant(struct _mesa_glsl_parse_state
* in a single declaration, the last occurrence overrides the
* former occurrence(s)."
*/
if (!first_pass) {
if ((must_match || !state->has_420pack()) && *value != const_int->value.u[0]) {
YYLTYPE loc = const_expression->get_location();
_mesa_glsl_error(&loc, state, "%s layout qualifier does not "
"match previous declaration (%d vs %d)",
qual_indentifier, *value, const_int->value.i[0]);
return false;
}
if (!state->has_420pack() && !first_pass && *value != const_int->value.u[0]) {
YYLTYPE loc = const_expression->get_location();
_mesa_glsl_error(&loc, state, "%s layout qualifier does not "
"match previous declaration (%d vs %d)",
qual_indentifier, *value, const_int->value.i[0]);
return false;
} else {
first_pass = false;
*value = const_int->value.u[0];

2
src/compiler/glsl/glsl_parser_extras.cpp
View File

@@ -1744,7 +1744,7 @@ set_shader_inout_layout(struct gl_shader *shader,
unsigned qual_max_vertices;
if (state->out_qualifier->max_vertices->
process_qualifier_constant(state, "max_vertices",
&qual_max_vertices, true, true)) {
&qual_max_vertices, true)) {
if (qual_max_vertices > state->Const.MaxGeometryOutputVertices) {
YYLTYPE loc = state->out_qualifier->max_vertices->get_location();