diff options
Diffstat (limited to 'src/glsl/ast_to_hir.cpp')
| -rw-r--r-- | src/glsl/ast_to_hir.cpp | 297 |
1 files changed, 274 insertions, 23 deletions
diff --git a/src/glsl/ast_to_hir.cpp b/src/glsl/ast_to_hir.cpp index 7206f1b..51ea183 100644 --- a/src/glsl/ast_to_hir.cpp +++ b/src/glsl/ast_to_hir.cpp @@ -2146,10 +2146,10 @@ precision_qualifier_allowed(const glsl_type *type) * From this, we infer that GLSL 1.30 (and later) should allow precision * qualifiers on sampler types just like float and integer types. */ - return type->is_float() + return (type->is_float() || type->is_integer() - || type->is_record() - || type->contains_opaque(); + || type->contains_opaque()) + && !type->without_array()->is_record(); } const glsl_type * @@ -2167,31 +2167,268 @@ ast_type_specifier::glsl_type(const char **name, return type; } -const glsl_type * -ast_fully_specified_type::glsl_type(const char **name, - struct _mesa_glsl_parse_state *state) const +/** + * From the OpenGL ES 3.0 spec, 4.5.4 Default Precision Qualifiers: + * + * "The precision statement + * + * precision precision-qualifier type; + * + * can be used to establish a default precision qualifier. The type field can + * be either int or float or any of the sampler types, (...) If type is float, + * the directive applies to non-precision-qualified floating point type + * (scalar, vector, and matrix) declarations. If type is int, the directive + * applies to all non-precision-qualified integer type (scalar, vector, signed, + * and unsigned) declarations." + * + * We use the symbol table to keep the values of the default precisions for + * each 'type' in each scope and we use the 'type' string from the precision + * statement as key in the symbol table. When we want to retrieve the default + * precision associated with a given glsl_type we need to know the type string + * associated with it. This is what this function returns. + */ +static const char * +get_type_name_for_precision_qualifier(const glsl_type *type) { - const struct glsl_type *type = this->specifier->glsl_type(name, state); - - if (type == NULL) - return NULL; + switch (type->base_type) { + case GLSL_TYPE_FLOAT: + return "float"; + case GLSL_TYPE_UINT: + case GLSL_TYPE_INT: + return "int"; + case GLSL_TYPE_ATOMIC_UINT: + return "atomic_uint"; + case GLSL_TYPE_IMAGE: + /* fallthrough */ + case GLSL_TYPE_SAMPLER: { + const unsigned type_idx = + type->sampler_array + 2 * type->sampler_shadow; + const unsigned offset = type->base_type == GLSL_TYPE_SAMPLER ? 0 : 4; + assert(type_idx < 4); + switch (type->sampler_type) { + case GLSL_TYPE_FLOAT: + switch (type->sampler_dimensionality) { + case GLSL_SAMPLER_DIM_1D: { + assert(type->base_type == GLSL_TYPE_SAMPLER); + static const char *const names[4] = { + "sampler1D", "sampler1DArray", + "sampler1DShadow", "sampler1DArrayShadow" + }; + return names[type_idx]; + } + case GLSL_SAMPLER_DIM_2D: { + static const char *const names[8] = { + "sampler2D", "sampler2DArray", + "sampler2DShadow", "sampler2DArrayShadow", + "image2D", "image2DArray", NULL, NULL + }; + return names[offset + type_idx]; + } + case GLSL_SAMPLER_DIM_3D: { + static const char *const names[8] = { + "sampler3D", NULL, NULL, NULL, + "image3D", NULL, NULL, NULL + }; + return names[offset + type_idx]; + } + case GLSL_SAMPLER_DIM_CUBE: { + static const char *const names[8] = { + "samplerCube", "samplerCubeArray", + "samplerCubeShadow", "samplerCubeArrayShadow", + "imageCube", NULL, NULL, NULL + }; + return names[offset + type_idx]; + } + case GLSL_SAMPLER_DIM_MS: { + assert(type->base_type == GLSL_TYPE_SAMPLER); + static const char *const names[4] = { + "sampler2DMS", "sampler2DMSArray", NULL, NULL + }; + return names[type_idx]; + } + case GLSL_SAMPLER_DIM_RECT: { + assert(type->base_type == GLSL_TYPE_SAMPLER); + static const char *const names[4] = { + "samplerRect", NULL, "samplerRectShadow", NULL + }; + return names[type_idx]; + } + case GLSL_SAMPLER_DIM_BUF: { + assert(type->base_type == GLSL_TYPE_SAMPLER); + static const char *const names[4] = { + "samplerBuffer", NULL, NULL, NULL + }; + return names[type_idx]; + } + case GLSL_SAMPLER_DIM_EXTERNAL: { + assert(type->base_type == GLSL_TYPE_SAMPLER); + static const char *const names[4] = { + "samplerExternalOES", NULL, NULL, NULL + }; + return names[type_idx]; + } + default: + unreachable("Unsupported sampler/image dimensionality"); + } /* sampler/image float dimensionality */ + break; + case GLSL_TYPE_INT: + switch (type->sampler_dimensionality) { + case GLSL_SAMPLER_DIM_1D: { + assert(type->base_type == GLSL_TYPE_SAMPLER); + static const char *const names[4] = { + "isampler1D", "isampler1DArray", NULL, NULL + }; + return names[type_idx]; + } + case GLSL_SAMPLER_DIM_2D: { + static const char *const names[8] = { + "isampler2D", "isampler2DArray", NULL, NULL, + "iimage2D", "iimage2DArray", NULL, NULL + }; + return names[offset + type_idx]; + } + case GLSL_SAMPLER_DIM_3D: { + static const char *const names[8] = { + "isampler3D", NULL, NULL, NULL, + "iimage3D", NULL, NULL, NULL + }; + return names[offset + type_idx]; + } + case GLSL_SAMPLER_DIM_CUBE: { + static const char *const names[8] = { + "isamplerCube", "isamplerCubeArray", NULL, NULL, + "iimageCube", NULL, NULL, NULL + }; + return names[offset + type_idx]; + } + case GLSL_SAMPLER_DIM_MS: { + assert(type->base_type == GLSL_TYPE_SAMPLER); + static const char *const names[4] = { + "isampler2DMS", "isampler2DMSArray", NULL, NULL + }; + return names[type_idx]; + } + case GLSL_SAMPLER_DIM_RECT: { + assert(type->base_type == GLSL_TYPE_SAMPLER); + static const char *const names[4] = { + "isamplerRect", NULL, "isamplerRectShadow", NULL + }; + return names[type_idx]; + } + case GLSL_SAMPLER_DIM_BUF: { + assert(type->base_type == GLSL_TYPE_SAMPLER); + static const char *const names[4] = { + "isamplerBuffer", NULL, NULL, NULL + }; + return names[type_idx]; + } + default: + unreachable("Unsupported isampler/iimage dimensionality"); + } /* sampler/image int dimensionality */ + break; + case GLSL_TYPE_UINT: + switch (type->sampler_dimensionality) { + case GLSL_SAMPLER_DIM_1D: { + assert(type->base_type == GLSL_TYPE_SAMPLER); + static const char *const names[4] = { + "usampler1D", "usampler1DArray", NULL, NULL + }; + return names[type_idx]; + } + case GLSL_SAMPLER_DIM_2D: { + static const char *const names[8] = { + "usampler2D", "usampler2DArray", NULL, NULL, + "uimage2D", "uimage2DArray", NULL, NULL + }; + return names[offset + type_idx]; + } + case GLSL_SAMPLER_DIM_3D: { + static const char *const names[8] = { + "usampler3D", NULL, NULL, NULL, + "uimage3D", NULL, NULL, NULL + }; + return names[offset + type_idx]; + } + case GLSL_SAMPLER_DIM_CUBE: { + static const char *const names[8] = { + "usamplerCube", "usamplerCubeArray", NULL, NULL, + "uimageCube", NULL, NULL, NULL + }; + return names[offset + type_idx]; + } + case GLSL_SAMPLER_DIM_MS: { + assert(type->base_type == GLSL_TYPE_SAMPLER); + static const char *const names[4] = { + "usampler2DMS", "usampler2DMSArray", NULL, NULL + }; + return names[type_idx]; + } + case GLSL_SAMPLER_DIM_RECT: { + assert(type->base_type == GLSL_TYPE_SAMPLER); + static const char *const names[4] = { + "usamplerRect", NULL, "usamplerRectShadow", NULL + }; + return names[type_idx]; + } + case GLSL_SAMPLER_DIM_BUF: { + assert(type->base_type == GLSL_TYPE_SAMPLER); + static const char *const names[4] = { + "usamplerBuffer", NULL, NULL, NULL + }; + return names[type_idx]; + } + default: + unreachable("Unsupported usampler/uimage dimensionality"); + } /* sampler/image uint dimensionality */ + break; + default: + unreachable("Unsupported sampler/image type"); + } /* sampler/image type */ + break; + } /* GLSL_TYPE_SAMPLER/GLSL_TYPE_IMAGE */ + break; + default: + unreachable("Unsupported type"); + } /* base type */ +} - /* The fragment language does not define a default precision value - * for float types, so check that one is defined if the type declaration - * isn't providing one explictly. +static unsigned +select_gles_precision(unsigned qual_precision, + const glsl_type *type, + struct _mesa_glsl_parse_state *state, YYLTYPE *loc) +{ + /* Precision qualifiers do not have any meaning in Desktop GLSL. + * In GLES we take the precision from the type qualifier if present, + * otherwise, if the type of the variable allows precision qualifiers at + * all, we look for the default precision qualifier for that type in the + * current scope. */ - if (type->base_type == GLSL_TYPE_FLOAT - && state->es_shader - && state->stage == MESA_SHADER_FRAGMENT - && this->qualifier.precision == ast_precision_none - && state->symbols->get_default_precision_qualifier("float") == ast_precision_none) { - YYLTYPE loc = this->get_location(); - _mesa_glsl_error(&loc, state, - "no precision specified this scope for type `%s'", - type->name); + assert(state->es_shader); + + unsigned precision = GLSL_PRECISION_NONE; + if (qual_precision) { + precision = qual_precision; + } else if (precision_qualifier_allowed(type)) { + const char *type_name = + get_type_name_for_precision_qualifier(type->without_array()); + assert(type_name != NULL); + + precision = + state->symbols->get_default_precision_qualifier(type_name); + if (precision == ast_precision_none) { + _mesa_glsl_error(loc, state, + "No precision specified in this scope for type `%s'", + type->name); + } } + return precision; +} - return type; +const glsl_type * +ast_fully_specified_type::glsl_type(const char **name, + struct _mesa_glsl_parse_state *state) const +{ + return this->specifier->glsl_type(name, state); } /** @@ -2729,6 +2966,12 @@ apply_type_qualifier_to_variable(const struct ast_type_qualifier *qual, if (qual->flags.q.sample) var->data.sample = 1; + /* Precision qualifiers do not hold any meaning in Desktop GLSL */ + if (state->es_shader) { + var->data.precision = + select_gles_precision(qual->precision, var->type, state, loc); + } + if (state->stage == MESA_SHADER_GEOMETRY && qual->flags.q.out && qual->flags.q.stream) { var->data.stream = qual->stream; @@ -5918,6 +6161,7 @@ ast_process_structure_or_interface_block(exec_list *instructions, fields[i].centroid = qual->flags.q.centroid ? 1 : 0; fields[i].sample = qual->flags.q.sample ? 1 : 0; fields[i].patch = qual->flags.q.patch ? 1 : 0; + fields[i].precision = qual->precision; /* From Section 4.4.2.3 (Geometry Outputs) of the GLSL 4.50 spec: * @@ -6599,6 +6843,13 @@ ast_interface_block::hir(exec_list *instructions, if (var_mode == ir_var_shader_in || var_mode == ir_var_uniform) var->data.read_only = true; + /* Precision qualifiers do not have any meaning in Desktop GLSL */ + if (state->es_shader) { + var->data.precision = + select_gles_precision(fields[i].precision, fields[i].type, + state, &loc); + } + if (fields[i].matrix_layout == GLSL_MATRIX_LAYOUT_INHERITED) { var->data.matrix_layout = matrix_layout == GLSL_MATRIX_LAYOUT_INHERITED ? GLSL_MATRIX_LAYOUT_COLUMN_MAJOR : matrix_layout; |