diff options
Diffstat (limited to 'src/compiler/glsl/link_varyings.cpp')
| -rw-r--r-- | src/compiler/glsl/link_varyings.cpp | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/src/compiler/glsl/link_varyings.cpp b/src/compiler/glsl/link_varyings.cpp index 656bf79ca9d..ed3bf416878 100644 --- a/src/compiler/glsl/link_varyings.cpp +++ b/src/compiler/glsl/link_varyings.cpp @@ -325,8 +325,23 @@ cross_validate_types_and_qualifiers(struct gl_shader_program *prog, * "It is a link-time error if, within the same stage, the interpolation * qualifiers of variables of the same name do not match. * + * Section 4.3.9 (Interpolation) of the GLSL ES 3.00 spec says: + * + * "When no interpolation qualifier is present, smooth interpolation + * is used." + * + * So we match variables where one is smooth and the other has no explicit + * qualifier. */ - if (input->data.interpolation != output->data.interpolation && + unsigned input_interpolation = input->data.interpolation; + unsigned output_interpolation = output->data.interpolation; + if (prog->IsES) { + if (input_interpolation == INTERP_MODE_NONE) + input_interpolation = INTERP_MODE_SMOOTH; + if (output_interpolation == INTERP_MODE_NONE) + output_interpolation = INTERP_MODE_SMOOTH; + } + if (input_interpolation != output_interpolation && prog->data->Version < 440) { linker_error(prog, "%s shader output `%s' specifies %s " |