Reviewed-by: Petri Latvala <petri.latv...@intel.com>
On 06/12/2014 10:46 AM, Tapani Pälli wrote:
Patch adds a preprocessor define for the extension and stores explicit location data for uniforms during AST->HIR conversion. It also sets layout token to be available when having the extension in place. v2: change parser check to require GLSL 330 or enabling GL_ARB_explicit_attrib_location (Ian) v3: fix the check and comment in AST->HIR (Petri) Signed-off-by: Tapani Pälli <tapani.pa...@intel.com> --- src/glsl/ast_to_hir.cpp | 35 +++++++++++++++++++++++++++++++++++ src/glsl/glcpp/glcpp-parse.y | 3 +++ src/glsl/glsl_lexer.ll | 1 + src/glsl/glsl_parser_extras.h | 15 +++++++++++++++ 4 files changed, 54 insertions(+) diff --git a/src/glsl/ast_to_hir.cpp b/src/glsl/ast_to_hir.cpp index 140bb74..9567f9b 100644 --- a/src/glsl/ast_to_hir.cpp +++ b/src/glsl/ast_to_hir.cpp @@ -2181,6 +2181,41 @@ validate_explicit_location(const struct ast_type_qualifier *qual, { bool fail = false;+ /* Checks for GL_ARB_explicit_uniform_location. */+ if (qual->flags.q.uniform) { + if (!state->check_explicit_uniform_location_allowed(loc, var)) + return; + + const struct gl_context *const ctx = state->ctx; + unsigned max_loc = qual->location + var->type->uniform_locations() - 1; + + /* ARB_explicit_uniform_location specification states: + * + * "The explicitly defined locations and the generated locations + * must be in the range of 0 to MAX_UNIFORM_LOCATIONS minus one." + * + * "Valid locations for default-block uniform variable locations + * are in the range of 0 to the implementation-defined maximum + * number of uniform locations." + */ + if (qual->location < 0) { + _mesa_glsl_error(loc, state, + "explicit location < 0 for uniform %s", var->name); + return; + } + + if (max_loc >= ctx->Const.MaxUserAssignableUniformLocations) { + _mesa_glsl_error(loc, state, "location(s) consumed by uniform %s " + ">= MAX_UNIFORM_LOCATIONS (%u)", var->name, + ctx->Const.MaxUserAssignableUniformLocations); + return; + } + + var->data.explicit_location = true; + var->data.location = qual->location; + return; + } + /* Between GL_ARB_explicit_attrib_location an * GL_ARB_separate_shader_objects, the inputs and outputs of any shader * stage can be assigned explicit locations. The checking here associates diff --git a/src/glsl/glcpp/glcpp-parse.y b/src/glsl/glcpp/glcpp-parse.y index 9887583..dacb954 100644 --- a/src/glsl/glcpp/glcpp-parse.y +++ b/src/glsl/glcpp/glcpp-parse.y @@ -2089,6 +2089,9 @@ _glcpp_parser_handle_version_declaration(glcpp_parser_t *parser, intmax_t versio if (extensions->ARB_explicit_attrib_location) add_builtin_define(parser, "GL_ARB_explicit_attrib_location", 1);+ if (extensions->ARB_explicit_uniform_location)+ add_builtin_define(parser, "GL_ARB_explicit_uniform_location", 1); + if (extensions->ARB_shader_texture_lod) add_builtin_define(parser, "GL_ARB_shader_texture_lod", 1);diff --git a/src/glsl/glsl_lexer.ll b/src/glsl/glsl_lexer.llindex 6c3f9b6..db7b1d1 100644 --- a/src/glsl/glsl_lexer.ll +++ b/src/glsl/glsl_lexer.ll @@ -396,6 +396,7 @@ layout { || yyextra->AMD_conservative_depth_enable || yyextra->ARB_conservative_depth_enable || yyextra->ARB_explicit_attrib_location_enable + || yyextra->ARB_explicit_uniform_location_enable || yyextra->has_separate_shader_objects() || yyextra->ARB_uniform_buffer_object_enable || yyextra->ARB_fragment_coord_conventions_enable diff --git a/src/glsl/glsl_parser_extras.h b/src/glsl/glsl_parser_extras.h index e26460e..b73f816 100644 --- a/src/glsl/glsl_parser_extras.h +++ b/src/glsl/glsl_parser_extras.h @@ -151,6 +151,21 @@ struct _mesa_glsl_parse_state { return true; }+ bool check_explicit_uniform_location_allowed(YYLTYPE *locp,+ const ir_variable *var) + { + if (!this->has_explicit_attrib_location() || + !this->ARB_explicit_uniform_location_enable) { + _mesa_glsl_error(locp, this, + "uniform explicit location requires " + "GL_ARB_explicit_uniform_location and either " + "GL_ARB_explicit_attrib_location or GLSL 330."); + return false; + } + + return true; + } + bool has_explicit_attrib_location() const { return ARB_explicit_attrib_location_enable || is_version(330, 300);
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