diff options
| -rw-r--r-- | src/compiler/glsl/glsl_parser.yy | 4 | ||||
| -rw-r--r-- | src/compiler/glsl/link_varyings.cpp | 20 |
2 files changed, 22 insertions, 2 deletions
diff --git a/src/compiler/glsl/glsl_parser.yy b/src/compiler/glsl/glsl_parser.yy index 4ab9e145001..4f4a83cd8d0 100644 --- a/src/compiler/glsl/glsl_parser.yy +++ b/src/compiler/glsl/glsl_parser.yy @@ -1774,8 +1774,10 @@ type_qualifier: * variables. As only outputs can be declared as invariant, an invariant * output from one shader stage will still match an input of a subsequent * stage without the input being declared as invariant." + * + * On the desktop side, this text first appears in GLSL 4.30. */ - if (state->es_shader && state->language_version >= 300 && $$.flags.q.in) + if (state->is_version(430, 300) && $$.flags.q.in) _mesa_glsl_error(&@1, state, "invariant qualifiers cannot be used with shader inputs"); } | interpolation_qualifier type_qualifier diff --git a/src/compiler/glsl/link_varyings.cpp b/src/compiler/glsl/link_varyings.cpp index b4799d297dc..1bce3e00207 100644 --- a/src/compiler/glsl/link_varyings.cpp +++ b/src/compiler/glsl/link_varyings.cpp @@ -308,7 +308,25 @@ cross_validate_types_and_qualifiers(struct gl_shader_program *prog, return; } - if (!prog->IsES && input->data.invariant != output->data.invariant) { + /* The GLSL 4.30 and GLSL ES 3.00 specifications say: + * + * "As only outputs need be declared with invariant, an output from + * one shader stage will still match an input of a subsequent stage + * without the input being declared as invariant." + * + * while GLSL 4.20 says: + * + * "For variables leaving one shader and coming into another shader, + * the invariant keyword has to be used in both shaders, or a link + * error will result." + * + * and GLSL ES 1.00 section 4.6.4 "Invariance and Linking" says: + * + * "The invariance of varyings that are declared in both the vertex + * and fragment shaders must match." + */ + if (input->data.invariant != output->data.invariant && + prog->Version < (prog->IsES ? 300 : 430)) { linker_error(prog, "%s shader output `%s' %s invariant qualifier, " "but %s shader input %s invariant qualifier\n", |