diff options
| -rw-r--r-- | src/glsl/ast_array_index.cpp | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/glsl/ast_array_index.cpp b/src/glsl/ast_array_index.cpp index 50f9987c8af..5ca85f6ab3f 100644 --- a/src/glsl/ast_array_index.cpp +++ b/src/glsl/ast_array_index.cpp @@ -213,6 +213,13 @@ _mesa_ast_array_index_to_hir(void *mem_ctx, * as using a loop counter as the index to an array of samplers. If the * loop in unrolled, the code should compile correctly. Instead, emit a * warning. + * + * In GLSL 4.00 / ARB_gpu_shader5, this requirement is relaxed again to allow + * indexing with dynamically uniform expressions. Note that these are not + * required to be uniforms or expressions based on them, but merely that the + * values must not diverge between shader invocations run together. If the + * values *do* diverge, then the behavior of the operation requiring a + * dynamically uniform expression is undefined. */ if (array->type->element_type()->is_sampler()) { if (!state->is_version(130, 100)) { @@ -227,7 +234,7 @@ _mesa_ast_array_index_to_hir(void *mem_ctx, "expressions will be forbidden in GLSL 1.30 " "and later"); } - } else { + } else if (!state->is_version(400, 0) && !state->ARB_gpu_shader5_enable) { _mesa_glsl_error(&loc, state, "sampler arrays indexed with non-constant " "expressions is forbidden in GLSL 1.30 and " |