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| author | marha <marha@users.sourceforge.net> | 2013-08-19 09:03:18 +0200 |
|---|---|---|
| committer | marha <marha@users.sourceforge.net> | 2013-08-19 09:03:18 +0200 |
| commit | 854ec4da20ddff9b830be0a7d5b81d8cb4774132 (patch) | |
| tree | 223425d84b5ea3727f74546c92dee8b03c074158 /mesalib/src/glsl | |
| parent | 0659c77949b38440a2a9ba67e1ee9cacef1f3a7f (diff) | |
| download | vcxsrv-854ec4da20ddff9b830be0a7d5b81d8cb4774132.tar.gz vcxsrv-854ec4da20ddff9b830be0a7d5b81d8cb4774132.tar.bz2 vcxsrv-854ec4da20ddff9b830be0a7d5b81d8cb4774132.zip | |
fontconfig libX11 libXdmcp libxcb xkeyboard-config mesa pixman xserver git update 19 aug 2013
xserver commit fe7463b8ce0de301c2f82b108c93963424f77219
libxcb commit 5648ddd2b97068f549268284129a438a6845e14c
libxcb/xcb-proto commit 56a82005ac388fcb7a4d1c82e07c7e72eaf69a32
xkeyboard-config commit 87c865aee1844b2cc6b1a5a208116dd095f4d76a
libX11 commit 9b291044a240e5b9b031ed814e0c84e53a1c3084
libXdmcp commit 66514a4af7eaa47e8718434356d7efce95e570cf
libXext commit 7378d4bdbd33ed49ed6cfa5c4f73d7527982aab4
libfontenc commit 3acba630d8b57084f7e92c15732408711ed5137a
libXinerama commit 6e1d1dc328ba8162bba2f4694e7f3c706a1491ff
libXau commit 899790011304c4029e15abf410e49ce7cec17e0a
xkbcomp commit 0ebdf47fd4bc434ac3d2339544c022a869510738
pixman commit 3518a0dafa63098d41e466f73d105b7e3e4b12de
xextproto commit f27fcc99d1cf935cc289933326f7d3baacd5107a
randrproto commit ca7cc541c2e43e6c784df19b4583ac35829d2f72
glproto commit 8e3407e02980d088e20041e79bdcdd3737e7827e
mkfontscale commit f48de13423c7300f4da9f61993b624426b38ddc0
xwininfo commit ba0d1b0da21d2dbdd81098ed5778f3792b472e13
libXft commit c5e760a239afc62a1c75e0509868e35957c8df52
libXmu commit d5dac08d65c4865f311cb62c161dbb1300eecd11
libxtrans commit f6a161f2a003f4da0a2e414b4faa0ee0de0c01f0
fontconfig commit 084cf7c44e985dd48c088d921ad0d9a43b0b00b4
mesa commit d13003f544417db6de44c65a0c118bd2b189458a
Diffstat (limited to 'mesalib/src/glsl')
31 files changed, 1582 insertions, 201 deletions
diff --git a/mesalib/src/glsl/ast.h b/mesalib/src/glsl/ast.h index d98f1a39b..9b194dbd0 100644 --- a/mesalib/src/glsl/ast.h +++ b/mesalib/src/glsl/ast.h @@ -435,6 +435,12 @@ struct ast_type_qualifier { unsigned column_major:1; unsigned row_major:1; /** \} */ + + /** \name Layout qualifiers for GLSL 1.50 geometry shaders */ + /** \{ */ + unsigned prim_type:1; + unsigned max_vertices:1; + /** \} */ } /** \brief Set of flags, accessed by name. */ q; @@ -461,6 +467,12 @@ struct ast_type_qualifier { */ int index; + /** Maximum output vertices in GLSL 1.50 geometry shaders. */ + int max_vertices; + + /** Input or output primitive type in GLSL 1.50 geometry shaders */ + GLenum prim_type; + /** * Binding specified via GL_ARB_shading_language_420pack's "binding" keyword. * @@ -895,12 +907,14 @@ public: class ast_interface_block : public ast_node { public: ast_interface_block(ast_type_qualifier layout, - const char *instance_name, - ast_expression *array_size) + const char *instance_name, + bool is_array, + ast_expression *array_size) : layout(layout), block_name(NULL), instance_name(instance_name), - array_size(array_size) + is_array(is_array), array_size(array_size) { - /* empty */ + if (!is_array) + assert(array_size == NULL); } virtual ir_rvalue *hir(exec_list *instructions, @@ -921,16 +935,44 @@ public: exec_list declarations; /** - * Declared array size of the block instance - * - * If the block is not declared as an array, this field will be \c NULL. + * True if the block is declared as an array * * \note * A block can only be an array if it also has an instance name. If this - * field is not \c NULL, ::instance_name must also not be \c NULL. + * field is true, ::instance_name must also not be \c NULL. + */ + bool is_array; + + /** + * Declared array size of the block instance + * + * If the block is not declared as an array or if the block instance array + * is unsized, this field will be \c NULL. */ ast_expression *array_size; }; + + +/** + * AST node representing a declaration of the input layout for geometry + * shaders. + */ +class ast_gs_input_layout : public ast_node +{ +public: + ast_gs_input_layout(const struct YYLTYPE &locp, GLenum prim_type) + : prim_type(prim_type) + { + set_location(locp); + } + + virtual ir_rvalue *hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state); + +private: + const GLenum prim_type; +}; + /*@}*/ extern void diff --git a/mesalib/src/glsl/ast_array_index.cpp b/mesalib/src/glsl/ast_array_index.cpp index 4baeb6f9d..51f6b10f3 100644 --- a/mesalib/src/glsl/ast_array_index.cpp +++ b/mesalib/src/glsl/ast_array_index.cpp @@ -117,7 +117,8 @@ _mesa_ast_array_index_to_hir(void *mem_ctx, } else if (const_index == NULL && array->type->is_array()) { if (array->type->array_size() == 0) { _mesa_glsl_error(&loc, state, "unsized array index must be constant"); - } else if (array->type->fields.array->is_interface()) { + } else if (array->type->fields.array->is_interface() + && array->variable_referenced()->mode == ir_var_uniform) { /* Page 46 in section 4.3.7 of the OpenGL ES 3.00 spec says: * * "All indexes used to index a uniform block array must be diff --git a/mesalib/src/glsl/ast_to_hir.cpp b/mesalib/src/glsl/ast_to_hir.cpp index 598da92f8..04b16c8aa 100644 --- a/mesalib/src/glsl/ast_to_hir.cpp +++ b/mesalib/src/glsl/ast_to_hir.cpp @@ -72,6 +72,8 @@ _mesa_ast_to_hir(exec_list *instructions, struct _mesa_glsl_parse_state *state) state->toplevel_ir = instructions; + state->gs_input_prim_type_specified = false; + /* Section 4.2 of the GLSL 1.20 specification states: * "The built-in functions are scoped in a scope outside the global scope * users declare global variables in. That is, a shader's global scope, @@ -1771,12 +1773,6 @@ process_array_type(YYLTYPE *loc, const glsl_type *base, ast_node *array_size, } } } - } else if (state->es_shader) { - /* Section 10.17 of the GLSL ES 1.00 specification states that unsized - * array declarations have been removed from the language. - */ - _mesa_glsl_error(loc, state, "unsized array declarations are not " - "allowed in GLSL ES 1.00"); } const glsl_type *array_type = glsl_type::get_array_instance(base, length); @@ -1936,6 +1932,8 @@ apply_type_qualifier_to_variable(const struct ast_type_qualifier *qual, bool ubo_qualifiers_valid, bool is_parameter) { + STATIC_ASSERT(sizeof(qual->flags.q) <= sizeof(qual->flags.i)); + if (qual->flags.q.invariant) { if (var->used) { _mesa_glsl_error(loc, state, @@ -1963,6 +1961,21 @@ apply_type_qualifier_to_variable(const struct ast_type_qualifier *qual, _mesa_glsl_shader_target_name(state->target)); } + /* Section 6.1.1 (Function Calling Conventions) of the GLSL 1.10 spec says: + * + * "However, the const qualifier cannot be used with out or inout." + * + * The same section of the GLSL 4.40 spec further clarifies this saying: + * + * "The const qualifier cannot be used with out or inout, or a + * compile-time error results." + */ + if (is_parameter && qual->flags.q.constant && qual->flags.q.out) { + _mesa_glsl_error(loc, state, + "`const' may not be applied to `out' or `inout' " + "function parameters"); + } + /* If there is no qualifier that changes the mode of the variable, leave * the setting alone. */ @@ -2055,13 +2068,24 @@ apply_type_qualifier_to_variable(const struct ast_type_qualifier *qual, else var->interpolation = INTERP_QUALIFIER_NONE; - if (var->interpolation != INTERP_QUALIFIER_NONE && - !(state->target == vertex_shader && var->mode == ir_var_shader_out) && - !(state->target == fragment_shader && var->mode == ir_var_shader_in)) { - _mesa_glsl_error(loc, state, - "interpolation qualifier `%s' can only be applied to " - "vertex shader outputs and fragment shader inputs", - var->interpolation_string()); + if (var->interpolation != INTERP_QUALIFIER_NONE) { + ir_variable_mode mode = (ir_variable_mode) var->mode; + + if (mode != ir_var_shader_in && mode != ir_var_shader_out) { + _mesa_glsl_error(loc, state, + "interpolation qualifier `%s' can only be applied to " + "shader inputs or outputs.", + var->interpolation_string()); + + } + + if ((state->target == vertex_shader && mode == ir_var_shader_in) || + (state->target == fragment_shader && mode == ir_var_shader_out)) { + _mesa_glsl_error(loc, state, + "interpolation qualifier `%s' cannot be applied to " + "vertex shader inputs or fragment shader outputs", + var->interpolation_string()); + } } var->pixel_center_integer = qual->flags.q.pixel_center_integer; @@ -2317,7 +2341,8 @@ get_variable_being_redeclared(ir_variable *var, ast_declaration *decl, earlier->type = var->type; delete var; var = NULL; - } else if (state->ARB_fragment_coord_conventions_enable + } else if ((state->ARB_fragment_coord_conventions_enable || + state->is_version(150, 0)) && strcmp(var->name, "gl_FragCoord") == 0 && earlier->type == var->type && earlier->mode == var->mode) { @@ -2519,6 +2544,81 @@ process_initializer(ir_variable *var, ast_declaration *decl, return result; } + +/** + * Do additional processing necessary for geometry shader input declarations + * (this covers both interface blocks arrays and bare input variables). + */ +static void +handle_geometry_shader_input_decl(struct _mesa_glsl_parse_state *state, + YYLTYPE loc, ir_variable *var) +{ + unsigned num_vertices = 0; + if (state->gs_input_prim_type_specified) { + num_vertices = vertices_per_prim(state->gs_input_prim_type); + } + + /* Geometry shader input variables must be arrays. Caller should have + * reported an error for this. + */ + if (!var->type->is_array()) { + assert(state->error); + + /* To avoid cascading failures, short circuit the checks below. */ + return; + } + + if (var->type->length == 0) { + /* Section 4.3.8.1 (Input Layout Qualifiers) of the GLSL 1.50 spec says: + * + * All geometry shader input unsized array declarations will be + * sized by an earlier input layout qualifier, when present, as per + * the following table. + * + * Followed by a table mapping each allowed input layout qualifier to + * the corresponding input length. + */ + if (num_vertices != 0) + var->type = glsl_type::get_array_instance(var->type->fields.array, + num_vertices); + } else { + /* Section 4.3.8.1 (Input Layout Qualifiers) of the GLSL 1.50 spec + * includes the following examples of compile-time errors: + * + * // code sequence within one shader... + * in vec4 Color1[]; // size unknown + * ...Color1.length()...// illegal, length() unknown + * in vec4 Color2[2]; // size is 2 + * ...Color1.length()...// illegal, Color1 still has no size + * in vec4 Color3[3]; // illegal, input sizes are inconsistent + * layout(lines) in; // legal, input size is 2, matching + * in vec4 Color4[3]; // illegal, contradicts layout + * ... + * + * To detect the case illustrated by Color3, we verify that the size of + * an explicitly-sized array matches the size of any previously declared + * explicitly-sized array. To detect the case illustrated by Color4, we + * verify that the size of an explicitly-sized array is consistent with + * any previously declared input layout. + */ + if (num_vertices != 0 && var->type->length != num_vertices) { + _mesa_glsl_error(&loc, state, + "geometry shader input size contradicts previously" + " declared layout (size is %u, but layout requires a" + " size of %u)", var->type->length, num_vertices); + } else if (state->gs_input_size != 0 && + var->type->length != state->gs_input_size) { + _mesa_glsl_error(&loc, state, + "geometry shader input sizes are " + "inconsistent (size is %u, but a previous " + "declaration has size %u)", + var->type->length, state->gs_input_size); + } else { + state->gs_input_size = var->type->length; + } + } +} + ir_rvalue * ast_declarator_list::hir(exec_list *instructions, struct _mesa_glsl_parse_state *state) @@ -2605,6 +2705,11 @@ ast_declarator_list::hir(exec_list *instructions, * name of a known structure type. This is both invalid and weird. * Emit an error. * + * - The program text contained something like 'mediump float;' + * when the programmer probably meant 'precision mediump + * float;' Emit a warning with a description of what they + * probably meant to do. + * * Note that if decl_type is NULL and there is a structure involved, * there must have been some sort of error with the structure. In this * case we assume that an error was already generated on this line of @@ -2613,20 +2718,33 @@ ast_declarator_list::hir(exec_list *instructions, */ assert(this->type->specifier->structure == NULL || decl_type != NULL || state->error); - if (this->type->specifier->structure == NULL) { - if (decl_type != NULL) { - _mesa_glsl_warning(&loc, state, "empty declaration"); - } else { - _mesa_glsl_error(&loc, state, - "invalid type `%s' in empty declaration", - type_name); - } - } - if (this->type->qualifier.precision != ast_precision_none && - this->type->specifier->structure != NULL) { - _mesa_glsl_error(&loc, state, "precision qualifiers can't be applied " - "to structures"); + if (decl_type == NULL) { + _mesa_glsl_error(&loc, state, + "invalid type `%s' in empty declaration", + type_name); + } else if (this->type->qualifier.precision != ast_precision_none) { + if (this->type->specifier->structure != NULL) { + _mesa_glsl_error(&loc, state, + "precision qualifiers can't be applied " + "to structures"); + } else { + static const char *const precision_names[] = { + "highp", + "highp", + "mediump", + "lowp" + }; + + _mesa_glsl_warning(&loc, state, + "empty declaration with precision qualifier, " + "to set the default precision, use " + "`precision %s %s;'", + precision_names[this->type->qualifier.precision], + type_name); + } + } else { + _mesa_glsl_warning(&loc, state, "empty declaration"); } } @@ -2662,6 +2780,26 @@ ast_declarator_list::hir(exec_list *instructions, var = new(ctx) ir_variable(var_type, decl->identifier, ir_var_auto); + /* The 'varying in' and 'varying out' qualifiers can only be used with + * ARB_geometry_shader4 and EXT_geometry_shader4, which we don't support + * yet. + */ + if (this->type->qualifier.flags.q.varying) { + if (this->type->qualifier.flags.q.in) { + _mesa_glsl_error(& loc, state, + "`varying in' qualifier in declaration of " + "`%s' only valid for geometry shaders using " + "ARB_geometry_shader4 or EXT_geometry_shader4", + decl->identifier); + } else if (this->type->qualifier.flags.q.out) { + _mesa_glsl_error(& loc, state, + "`varying out' qualifier in declaration of " + "`%s' only valid for geometry shaders using " + "ARB_geometry_shader4 or EXT_geometry_shader4", + decl->identifier); + } + } + /* From page 22 (page 28 of the PDF) of the GLSL 1.10 specification; * * "Global variables can only use the qualifiers const, @@ -2796,7 +2934,22 @@ ast_declarator_list::hir(exec_list *instructions, "cannot have array type")) { error_emitted = true; } - } + } else if (state->target == geometry_shader) { + /* From section 4.3.4 (Inputs) of the GLSL 1.50 spec: + * + * Geometry shader input variables get the per-vertex values + * written out by vertex shader output variables of the same + * names. Since a geometry shader operates on a set of + * vertices, each input varying variable (or input block, see + * interface blocks below) needs to be declared as an array. + */ + if (!var->type->is_array()) { + _mesa_glsl_error(&loc, state, + "geometry shader inputs must be arrays"); + } + + handle_geometry_shader_input_decl(state, loc, var); + } } /* Integer fragment inputs must be qualified with 'flat'. In GLSL ES, @@ -2906,7 +3059,7 @@ ast_declarator_list::hir(exec_list *instructions, } break; default: - assert(0); + break; } } @@ -3015,6 +3168,33 @@ ast_declarator_list::hir(exec_list *instructions, decl->identifier); } + if (state->es_shader) { + const glsl_type *const t = (earlier == NULL) + ? var->type : earlier->type; + + if (t->is_array() && t->length == 0) + /* Section 10.17 of the GLSL ES 1.00 specification states that + * unsized array declarations have been removed from the language. + * Arrays that are sized using an initializer are still explicitly + * sized. However, GLSL ES 1.00 does not allow array + * initializers. That is only allowed in GLSL ES 3.00. + * + * Section 4.1.9 (Arrays) of the GLSL ES 3.00 spec says: + * + * "An array type can also be formed without specifying a size + * if the definition includes an initializer: + * + * float x[] = float[2] (1.0, 2.0); // declares an array of size 2 + * float y[] = float[] (1.0, 2.0, 3.0); // declares an array of size 3 + * + * float a[5]; + * float b[] = a;" + */ + _mesa_glsl_error(& loc, state, + "unsized array declarations are not allowed in " + "GLSL ES"); + } + /* If the declaration is not a redeclaration, there are a few additional * semantic checks that must be applied. In addition, variable that was * created for the declaration should be added to the IR stream. @@ -3323,6 +3503,18 @@ ast_function::hir(exec_list *instructions, "function `%s' return type has qualifiers", name); } + /* Section 6.1 (Function Definitions) of the GLSL 1.20 spec says: + * + * "Arrays are allowed as arguments and as the return type. In both + * cases, the array must be explicitly sized." + */ + if (return_type->is_array() && return_type->length == 0) { + YYLTYPE loc = this->get_location(); + _mesa_glsl_error(& loc, state, + "function `%s' return type array must be explicitly " + "sized", name); + } + /* From page 17 (page 23 of the PDF) of the GLSL 1.20 spec: * * "[Sampler types] can only be declared as function parameters @@ -4362,6 +4554,19 @@ ast_interface_block::hir(exec_list *instructions, */ assert(declared_variables.is_empty()); + /* From section 4.3.4 (Inputs) of the GLSL 1.50 spec: + * + * Geometry shader input variables get the per-vertex values written + * out by vertex shader output variables of the same names. Since a + * geometry shader operates on a set of vertices, each input varying + * variable (or input block, see interface blocks below) needs to be + * declared as an array. + */ + if (state->target == geometry_shader && !this->is_array && + var_mode == ir_var_shader_in) { + _mesa_glsl_error(&loc, state, "geometry shader inputs must be arrays"); + } + /* Page 39 (page 45 of the PDF) of section 4.3.7 in the GLSL ES 3.00 spec * says: * @@ -4372,7 +4577,34 @@ ast_interface_block::hir(exec_list *instructions, if (this->instance_name) { ir_variable *var; - if (this->array_size != NULL) { + if (this->is_array) { + /* Section 4.3.7 (Interface Blocks) of the GLSL 1.50 spec says: + * + * For uniform blocks declared an array, each individual array + * element corresponds to a separate buffer object backing one + * instance of the block. As the array size indicates the number + * of buffer objects needed, uniform block array declarations + * must specify an array size. + * + * And a few paragraphs later: + * + * Geometry shader input blocks must be declared as arrays and + * follow the array declaration and linking rules for all + * geometry shader inputs. All other input and output block + * arrays must specify an array size. + * + * The upshot of this is that the only circumstance where an + * interface array size *doesn't* need to be specified is on a + * geometry shader input. + */ + if (this->array_size == NULL && + (state->target != geometry_shader || !this->layout.flags.q.in)) { + _mesa_glsl_error(&loc, state, + "only geometry shader inputs may be unsized " + "instance block arrays"); + + } + const glsl_type *block_array_type = process_array_type(&loc, block_type, this->array_size, state); @@ -4386,13 +4618,15 @@ ast_interface_block::hir(exec_list *instructions, } var->interface_type = block_type; + if (state->target == geometry_shader && var_mode == ir_var_shader_in) + handle_geometry_shader_input_decl(state, loc, var); state->symbols->add_variable(var); instructions->push_tail(var); } else { /* In order to have an array size, the block must also be declared with * an instane name. */ - assert(this->array_size == NULL); + assert(!this->is_array); for (unsigned i = 0; i < num_variables; i++) { ir_variable *var = @@ -4416,6 +4650,72 @@ ast_interface_block::hir(exec_list *instructions, return NULL; } + +ir_rvalue * +ast_gs_input_layout::hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + YYLTYPE loc = this->get_location(); + + /* If any geometry input layout declaration preceded this one, make sure it + * was consistent with this one. + */ + if (state->gs_input_prim_type_specified && + state->gs_input_prim_type != this->prim_type) { + _mesa_glsl_error(&loc, state, + "geometry shader input layout does not match" + " previous declaration"); + return NULL; + } + + /* If any shader inputs occurred before this declaration and specified an + * array size, make sure the size they specified is consistent with the + * primitive type. + */ + unsigned num_vertices = vertices_per_prim(this->prim_type); + if (state->gs_input_size != 0 && state->gs_input_size != num_vertices) { + _mesa_glsl_error(&loc, state, + "this geometry shader input layout implies %u vertices" + " per primitive, but a previous input is declared" + " with size %u", num_vertices, state->gs_input_size); + return NULL; + } + + state->gs_input_prim_type_specified = true; + state->gs_input_prim_type = this->prim_type; + + /* If any shader inputs occurred before this declaration and did not + * specify an array size, their size is determined now. + */ + foreach_list (node, instructions) { + ir_variable *var = ((ir_instruction *) node)->as_variable(); + if (var == NULL || var->mode != ir_var_shader_in) + continue; + + /* Note: gl_PrimitiveIDIn has mode ir_var_shader_in, but it's not an + * array; skip it. + */ + if (!var->type->is_array()) + continue; + + if (var->type->length == 0) { + if (var->max_array_access >= num_vertices) { + _mesa_glsl_error(&loc, state, + "this geometry shader input layout implies %u" + " vertices, but an access to element %u of input" + " `%s' already exists", num_vertices, + var->max_array_access, var->name); + } else { + var->type = glsl_type::get_array_instance(var->type->fields.array, + num_vertices); + } + } + } + + return NULL; +} + + static void detect_conflicting_assignments(struct _mesa_glsl_parse_state *state, exec_list *instructions) diff --git a/mesalib/src/glsl/ast_type.cpp b/mesalib/src/glsl/ast_type.cpp index 38c3f8eb0..ce6b6a771 100644 --- a/mesalib/src/glsl/ast_type.cpp +++ b/mesalib/src/glsl/ast_type.cpp @@ -133,6 +133,25 @@ ast_type_qualifier::merge_qualifier(YYLTYPE *loc, return false; } + if (q.flags.q.prim_type) { + if (this->flags.q.prim_type && this->prim_type != q.prim_type) { + _mesa_glsl_error(loc, state, + "conflicting primitive type qualifiers used"); + return false; + } + this->prim_type = q.prim_type; + } + + if (q.flags.q.max_vertices) { + if (this->flags.q.max_vertices && this->max_vertices != q.max_vertices) { + _mesa_glsl_error(loc, state, + "geometry shader set conflicting max_vertices " + "(%d and %d)", this->max_vertices, q.max_vertices); + return false; + } + this->max_vertices = q.max_vertices; + } + if ((q.flags.i & ubo_mat_mask.flags.i) != 0) this->flags.i &= ~ubo_mat_mask.flags.i; if ((q.flags.i & ubo_layout_mask.flags.i) != 0) diff --git a/mesalib/src/glsl/builtin_variables.cpp b/mesalib/src/glsl/builtin_variables.cpp index 1e88b6a73..6a808c072 100644 --- a/mesalib/src/glsl/builtin_variables.cpp +++ b/mesalib/src/glsl/builtin_variables.cpp @@ -686,8 +686,11 @@ builtin_variable_generator::generate_gs_special_vars() * the specific case of gl_PrimitiveIDIn. So we don't need to treat * gl_PrimitiveIDIn as an {ARB,EXT}_geometry_shader4-only variable. */ - add_input(VARYING_SLOT_PRIMITIVE_ID, int_t, "gl_PrimitiveIDIn"); - add_output(VARYING_SLOT_PRIMITIVE_ID, int_t, "gl_PrimitiveID"); + ir_variable *var; + var = add_input(VARYING_SLOT_PRIMITIVE_ID, int_t, "gl_PrimitiveIDIn"); + var->interpolation = INTERP_QUALIFIER_FLAT; + var = add_output(VARYING_SLOT_PRIMITIVE_ID, int_t, "gl_PrimitiveID"); + var->interpolation = INTERP_QUALIFIER_FLAT; } @@ -702,6 +705,12 @@ builtin_variable_generator::generate_fs_special_vars() if (state->is_version(120, 100)) add_input(VARYING_SLOT_PNTC, vec2_t, "gl_PointCoord"); + if (state->is_version(150, 0)) { + ir_variable *var = + add_input(VARYING_SLOT_PRIMITIVE_ID, int_t, "gl_PrimitiveID"); + var->interpolation = INTERP_QUALIFIER_FLAT; + } + /* gl_FragColor and gl_FragData were deprecated starting in desktop GLSL * 1.30, and were relegated to the compatibility profile in GLSL 4.20. * They were removed from GLSL ES 3.00. diff --git a/mesalib/src/glsl/glsl_parser.yy b/mesalib/src/glsl/glsl_parser.yy index fcc5620cd..e3a57ea02 100644 --- a/mesalib/src/glsl/glsl_parser.yy +++ b/mesalib/src/glsl/glsl_parser.yy @@ -254,6 +254,7 @@ _mesa_glsl_lex(YYSTYPE *val, YYLTYPE *loc, _mesa_glsl_parse_state *state) %type <node> for_init_statement %type <for_rest_statement> for_rest_statement %type <n> integer_constant +%type <node> layout_defaults %right THEN ELSE %% @@ -1157,7 +1158,8 @@ layout_qualifier_id: memset(& $$, 0, sizeof($$)); /* Layout qualifiers for ARB_fragment_coord_conventions. */ - if (!$$.flags.i && state->ARB_fragment_coord_conventions_enable) { + if (!$$.flags.i && (state->ARB_fragment_coord_conventions_enable || + state->is_version(150, 0))) { if (strcmp($1, "origin_upper_left") == 0) { $$.flags.q.origin_upper_left = 1; } else if (strcmp($1, "pixel_center_integer") == 0) { @@ -1222,6 +1224,34 @@ layout_qualifier_id: } } + /* Layout qualifiers for GLSL 1.50 geometry shaders. */ + if (!$$.flags.i) { + struct { + const char *s; + GLenum e; + } map[] = { + { "points", GL_POINTS }, + { "lines", GL_LINES }, + { "lines_adjacency", GL_LINES_ADJACENCY }, + { "line_strip", GL_LINE_STRIP }, + { "triangles", GL_TRIANGLES }, + { "triangles_adjacency", GL_TRIANGLES_ADJACENCY }, + { "triangle_strip", GL_TRIANGLE_STRIP }, + }; + for (unsigned i = 0; i < Elements(map); i++) { + if (strcmp($1, map[i].s) == 0) { + $$.flags.q.prim_type = 1; + $$.prim_type = map[i].e; + break; + } + } + + if ($$.flags.i && !state->is_version(150, 0)) { + _mesa_glsl_error(& @1, state, "#version 150 layout " + "qualifier `%s' used", $1); + } + } + if (!$$.flags.i) { _mesa_glsl_error(& @1, state, "unrecognized layout identifier " "`%s'", $1); @@ -1264,6 +1294,23 @@ layout_qualifier_id: $$.binding = $3; } + if (strcmp("max_vertices", $1) == 0) { + $$.flags.q.max_vertices = 1; + + if ($3 < 0) { + _mesa_glsl_error(& @3, state, + "invalid max_vertices %d specified", $3); + YYERROR; + } else { + $$.max_vertices = $3; + if (!state->is_version(150, 0)) { + _mesa_glsl_error(& @3, state, + "#version 150 max_vertices qualifier " + "specified", $3); + } + } + } + /* If the identifier didn't match any known layout identifiers, * emit an error. */ @@ -2046,7 +2093,7 @@ external_declaration: function_definition { $$ = $1; } | declaration { $$ = $1; } | pragma_statement { $$ = NULL; } - | layout_defaults { $$ = NULL; } + | layout_defaults { $$ = $1; } ; function_definition: @@ -2197,25 +2244,22 @@ instance_name_opt: /* empty */ { $$ = new(state) ast_interface_block(*state->default_uniform_qualifier, - NULL, NULL); + NULL, false, NULL); } | NEW_IDENTIFIER { $$ = new(state) ast_interface_block(*state->default_uniform_qualifier, - $1, NULL); + $1, false, NULL); } | NEW_IDENTIFIER '[' constant_expression ']' { $$ = new(state) ast_interface_block(*state->default_uniform_qualifier, - $1, $3); + $1, true, $3); } | NEW_IDENTIFIER '[' ']' { - _mesa_glsl_error(& @1, state, - "instance block arrays must be explicitly sized"); - $$ = new(state) ast_interface_block(*state->default_uniform_qualifier, - $1, NULL); + $1, true, NULL); } ; @@ -2263,4 +2307,32 @@ layout_defaults: if (!state->default_uniform_qualifier->merge_qualifier(& @1, state, $1)) { YYERROR; } + $$ = NULL; + } + + | layout_qualifier IN_TOK ';' + { + void *ctx = state; + if (state->target != geometry_shader) { + _mesa_glsl_error(& @1, state, + "input layout qualifiers only valid in " + "geometry shaders"); + } else if (!$1.flags.q.prim_type) { + _mesa_glsl_error(& @1, state, + "input layout qualifiers must specify a primitive" + " type"); + } + $$ = new(ctx) ast_gs_input_layout(@1, $1.prim_type); + } + + | layout_qualifier OUT_TOK ';' + { + if (state->target != geometry_shader) { + _mesa_glsl_error(& @1, state, + "out layout qualifiers only valid in " + "geometry shaders"); + } else if (!state->out_qualifier->merge_qualifier(& @1, state, $1)) { + YYERROR; + } + $$ = NULL; } diff --git a/mesalib/src/glsl/glsl_parser_extras.cpp b/mesalib/src/glsl/glsl_parser_extras.cpp index a5bc20c23..88f048365 100644 --- a/mesalib/src/glsl/glsl_parser_extras.cpp +++ b/mesalib/src/glsl/glsl_parser_extras.cpp @@ -159,6 +159,10 @@ _mesa_glsl_parse_state::_mesa_glsl_parse_state(struct gl_context *_ctx, this->default_uniform_qualifier = new(this) ast_type_qualifier(); this->default_uniform_qualifier->flags.q.shared = 1; this->default_uniform_qualifier->flags.q.column_major = 1; + + this->gs_input_prim_type_specified = false; + this->gs_input_prim_type = GL_POINTS; + this->out_qualifier = new(this) ast_type_qualifier(); } /** @@ -1410,6 +1414,34 @@ ast_struct_specifier::ast_struct_specifier(const char *identifier, is_declaration = true; } +static void +set_shader_inout_layout(struct gl_shader *shader, + struct _mesa_glsl_parse_state *state) +{ + if (shader->Type != GL_GEOMETRY_SHADER) { + /* Should have been prevented by the parser. */ + assert(!state->gs_input_prim_type_specified); + assert(!state->out_qualifier->flags.i); + return; + } + + shader->Geom.VerticesOut = 0; + if (state->out_qualifier->flags.q.max_vertices) + shader->Geom.VerticesOut = state->out_qualifier->max_vertices; + + if (state->gs_input_prim_type_specified) { + shader->Geom.InputType = state->gs_input_prim_type; + } else { + shader->Geom.InputType = PRIM_UNKNOWN; + } + + if (state->out_qualifier->flags.q.prim_type) { + shader->Geom.OutputType = state->out_qualifier->prim_type; + } else { + shader->Geom.OutputType = PRIM_UNKNOWN; + } +} + extern "C" { void @@ -1485,6 +1517,9 @@ _mesa_glsl_compile_shader(struct gl_context *ctx, struct gl_shader *shader, shader->UniformBlocks = state->uniform_blocks; ralloc_steal(shader, shader->UniformBlocks); + if (!state->error) + set_shader_inout_layout(shader, state); + /* Retain any live IR, but trash the rest. */ reparent_ir(shader->ir, shader->ir); diff --git a/mesalib/src/glsl/glsl_parser_extras.h b/mesalib/src/glsl/glsl_parser_extras.h index 1e386dd31..b9ca4e3a4 100644 --- a/mesalib/src/glsl/glsl_parser_extras.h +++ b/mesalib/src/glsl/glsl_parser_extras.h @@ -166,6 +166,24 @@ struct _mesa_glsl_parse_state { struct ast_type_qualifier *default_uniform_qualifier; /** + * True if a geometry shader input primitive type was specified using a + * layout directive. + * + * Note: this value is computed at ast_to_hir time rather than at parse + * time. + */ + bool gs_input_prim_type_specified; + + /** + * If gs_input_prim_type_specified is true, the primitive type that was + * specified. Otherwise ignored. + */ + GLenum gs_input_prim_type; + + /** Output layout qualifiers from GLSL 1.50. (geometry shader controls)*/ + struct ast_type_qualifier *out_qualifier; + + /** * Printable list of GLSL versions supported by the current context * * \note @@ -298,6 +316,15 @@ struct _mesa_glsl_parse_state { /** Shaders containing built-in functions that are used for linking. */ struct gl_shader *builtins_to_link[16]; unsigned num_builtins_to_link; + + /** + * For geometry shaders, size of the most recently seen input declaration + * that was a sized array, or 0 if no sized input array declarations have + * been seen. + * + * Unused for other shader types. + */ + unsigned gs_input_size; }; # define YYLLOC_DEFAULT(Current, Rhs, N) \ diff --git a/mesalib/src/glsl/glsl_types.cpp b/mesalib/src/glsl/glsl_types.cpp index 8324b8ade..0c7e8eb11 100644 --- a/mesalib/src/glsl/glsl_types.cpp +++ b/mesalib/src/glsl/glsl_types.cpp @@ -828,3 +828,58 @@ glsl_type::std140_size(bool row_major) const assert(!"not reached"); return -1; } + + +unsigned +glsl_type::count_attribute_slots() const +{ + /* From page 31 (page 37 of the PDF) of the GLSL 1.50 spec: + * + * "A scalar input counts the same amount against this limit as a vec4, + * so applications may want to consider packing groups of four + * unrelated float inputs together into a vector to better utilize the + * capabilities of the underlying hardware. A matrix input will use up + * multiple locations. The number of locations used will equal the + * number of columns in the matrix." + * + * The spec does not explicitly say how arrays are counted. However, it + * should be safe to assume the total number of slots consumed by an array + * is the number of entries in the array multiplied by the number of slots + * consumed by a single element of the array. + * + * The spec says nothing about how structs are counted, because vertex + * attributes are not allowed to be (or contain) structs. However, Mesa + * allows varying structs, the number of varying slots taken up by a + * varying struct is simply equal to the sum of the number of slots taken + * up by each element. + */ + switch (this->base_type) { + case GLSL_TYPE_UINT: + case GLSL_TYPE_INT: + case GLSL_TYPE_FLOAT: + case GLSL_TYPE_BOOL: + return this->matrix_columns; + + case GLSL_TYPE_STRUCT: + case GLSL_TYPE_INTERFACE: { + unsigned size = 0; + + for (unsigned i = 0; i < this->length; i++) + size += this->fields.structure[i].type->count_attribute_slots(); + + return size; + } + + case GLSL_TYPE_ARRAY: + return this->length * this->fields.array->count_attribute_slots(); + + case GLSL_TYPE_SAMPLER: + case GLSL_TYPE_VOID: + case GLSL_TYPE_ERROR: + break; + } + + assert(!"Unexpected type in count_attribute_slots()"); + + return 0; +} diff --git a/mesalib/src/glsl/glsl_types.h b/mesalib/src/glsl/glsl_types.h index 8172309a7..647867a23 100644 --- a/mesalib/src/glsl/glsl_types.h +++ b/mesalib/src/glsl/glsl_types.h @@ -253,6 +253,18 @@ struct glsl_type { unsigned component_slots() const; /** + * Calculate the number of attribute slots required to hold this type + * + * This implements the language rules of GLSL 1.50 for counting the number + * of slots used by a vertex attribute. It also determines the number of + * varying slots the type will use up in the absence of varying packing + * (and thus, it can be used to measure the number of varying slots used by + * the varyings that are generated by lower_packed_varyings). + */ + unsigned count_attribute_slots() const; + + + /** * Alignment in bytes of the start of this type in a std140 uniform * block. */ diff --git a/mesalib/src/glsl/ir.cpp b/mesalib/src/glsl/ir.cpp index dad58deeb..99dceacf8 100644 --- a/mesalib/src/glsl/ir.cpp +++ b/mesalib/src/glsl/ir.cpp @@ -1778,3 +1778,24 @@ ir_rvalue::as_rvalue_to_saturate() return NULL; } + + +unsigned +vertices_per_prim(GLenum prim) +{ + switch (prim) { + case GL_POINTS: + return 1; + case GL_LINES: + return 2; + case GL_TRIANGLES: + return 3; + case GL_LINES_ADJACENCY: + return 4; + case GL_TRIANGLES_ADJACENCY: + return 6; + default: + assert(!"Bad primitive"); + return 3; + } +} diff --git a/mesalib/src/glsl/ir.h b/mesalib/src/glsl/ir.h index 7ac291cf4..62e3b27ca 100644 --- a/mesalib/src/glsl/ir.h +++ b/mesalib/src/glsl/ir.h @@ -81,6 +81,8 @@ enum ir_node_type { ir_type_return, ir_type_swizzle, ir_type_texture, + ir_type_emit_vertex, + ir_type_end_primitive, ir_type_max /**< maximum ir_type enum number, for validation */ }; @@ -519,6 +521,8 @@ public: * * - Vertex shader input: one of the values from \c gl_vert_attrib. * - Vertex shader output: one of the values from \c gl_varying_slot. + * - Geometry shader input: one of the values from \c gl_varying_slot. + * - Geometry shader output: one of the values from \c gl_varying_slot. * - Fragment shader input: one of the values from \c gl_varying_slot. * - Fragment shader output: one of the values from \c gl_frag_result. * - Uniforms: Per-stage uniform slot number for default uniform block. @@ -1992,6 +1996,53 @@ private: /*@}*/ /** + * IR instruction to emit a vertex in a geometry shader. + */ +class ir_emit_vertex : public ir_instruction { +public: + ir_emit_vertex() + { + ir_type = ir_type_emit_vertex; + } + + virtual void accept(ir_visitor *v) + { + v->visit(this); + } + + virtual ir_emit_vertex *clone(void *mem_ctx, struct hash_table *) const + { + return new(mem_ctx) ir_emit_vertex(); + } + + virtual ir_visitor_status accept(ir_hierarchical_visitor *); +}; + +/** + * IR instruction to complete the current primitive and start a new one in a + * geometry shader. + */ +class ir_end_primitive : public ir_instruction { +public: + ir_end_primitive() + { + ir_type = ir_type_end_primitive; + } + + virtual void accept(ir_visitor *v) + { + v->visit(this); + } + + virtual ir_end_primitive *clone(void *mem_ctx, struct hash_table *) const + { + return new(mem_ctx) ir_end_primitive(); + } + + virtual ir_visitor_status accept(ir_hierarchical_visitor *); +}; + +/** * Apply a visitor to each IR node in a list */ void @@ -2061,7 +2112,7 @@ ir_has_call(ir_instruction *ir); extern void do_set_program_inouts(exec_list *instructions, struct gl_program *prog, - bool is_fragment_shader); + GLenum shader_type); extern char * prototype_string(const glsl_type *return_type, const char *name, @@ -2077,4 +2128,7 @@ extern void _mesa_print_ir(struct exec_list *instructions, } /* extern "C" */ #endif +unsigned +vertices_per_prim(GLenum prim); + #endif /* IR_H */ diff --git a/mesalib/src/glsl/ir_builder.cpp b/mesalib/src/glsl/ir_builder.cpp index 8fb30a02a..7d9cf5e47 100644 --- a/mesalib/src/glsl/ir_builder.cpp +++ b/mesalib/src/glsl/ir_builder.cpp @@ -219,6 +219,12 @@ saturate(operand a) new(mem_ctx) ir_constant(0.0f)); } +ir_expression * +abs(operand a) +{ + return expr(ir_unop_abs, a); +} + ir_expression* equal(operand a, operand b) { @@ -226,6 +232,12 @@ equal(operand a, operand b) } ir_expression* +nequal(operand a, operand b) +{ + return expr(ir_binop_nequal, a, b); +} + +ir_expression* less(operand a, operand b) { return expr(ir_binop_less, a, b); @@ -304,12 +316,24 @@ f2i(operand a) } ir_expression* +bitcast_f2i(operand a) +{ + return expr(ir_unop_bitcast_f2i, a); +} + +ir_expression* i2f(operand a) { return expr(ir_unop_i2f, a); } ir_expression* +bitcast_i2f(operand a) +{ + return expr(ir_unop_bitcast_i2f, a); +} + +ir_expression* i2u(operand a) { return expr(ir_unop_i2u, a); @@ -328,11 +352,35 @@ f2u(operand a) } ir_expression* +bitcast_f2u(operand a) +{ + return expr(ir_unop_bitcast_f2u, a); +} + +ir_expression* u2f(operand a) { return expr(ir_unop_u2f, a); } +ir_expression* +bitcast_u2f(operand a) +{ + return expr(ir_unop_bitcast_u2f, a); +} + +ir_expression* +i2b(operand a) +{ + return expr(ir_unop_i2b, a); +} + +ir_expression* +b2i(operand a) +{ + return expr(ir_unop_b2i, a); +} + ir_if* if_tree(operand condition, ir_instruction *then_branch) diff --git a/mesalib/src/glsl/ir_builder.h b/mesalib/src/glsl/ir_builder.h index 690ac74eb..7049476a1 100644 --- a/mesalib/src/glsl/ir_builder.h +++ b/mesalib/src/glsl/ir_builder.h @@ -133,8 +133,10 @@ ir_expression *round_even(operand a); ir_expression *dot(operand a, operand b); ir_expression *clamp(operand a, operand b, operand c); ir_expression *saturate(operand a); +ir_expression *abs(operand a); ir_expression *equal(operand a, operand b); +ir_expression *nequal(operand a, operand b); ir_expression *less(operand a, operand b); ir_expression *greater(operand a, operand b); ir_expression *lequal(operand a, operand b); @@ -151,11 +153,17 @@ ir_expression *lshift(operand a, operand b); ir_expression *rshift(operand a, operand b); ir_expression *f2i(operand a); +ir_expression *bitcast_f2i(operand a); ir_expression *i2f(operand a); +ir_expression *bitcast_i2f(operand a); ir_expression *f2u(operand a); +ir_expression *bitcast_f2u(operand a); ir_expression *u2f(operand a); +ir_expression *bitcast_u2f(operand a); ir_expression *i2u(operand a); ir_expression *u2i(operand a); +ir_expression *b2i(operand a); +ir_expression *i2b(operand a); /** * Swizzle away later components, but preserve the ordering. diff --git a/mesalib/src/glsl/ir_hierarchical_visitor.cpp b/mesalib/src/glsl/ir_hierarchical_visitor.cpp index f24414046..2e606dda4 100644 --- a/mesalib/src/glsl/ir_hierarchical_visitor.cpp +++ b/mesalib/src/glsl/ir_hierarchical_visitor.cpp @@ -69,6 +69,24 @@ ir_hierarchical_visitor::visit(ir_loop_jump *ir) } ir_visitor_status +ir_hierarchical_visitor::visit(ir_emit_vertex *ir) +{ + if (this->callback != NULL) + this->callback(ir, this->data); + + return visit_continue; +} + +ir_visitor_status +ir_hierarchical_visitor::visit(ir_end_primitive *ir) +{ + if (this->callback != NULL) + this->callback(ir, this->data); + + return visit_continue; +} + +ir_visitor_status ir_hierarchical_visitor::visit(ir_dereference_variable *ir) { if (this->callback != NULL) diff --git a/mesalib/src/glsl/ir_hierarchical_visitor.h b/mesalib/src/glsl/ir_hierarchical_visitor.h index 1988ad091..647d2e002 100644 --- a/mesalib/src/glsl/ir_hierarchical_visitor.h +++ b/mesalib/src/glsl/ir_hierarchical_visitor.h @@ -87,6 +87,8 @@ public: virtual ir_visitor_status visit(class ir_variable *); virtual ir_visitor_status visit(class ir_constant *); virtual ir_visitor_status visit(class ir_loop_jump *); + virtual ir_visitor_status visit(class ir_emit_vertex *); + virtual ir_visitor_status visit(class ir_end_primitive *); /** * ir_dereference_variable isn't technically a leaf, but it is treated as a diff --git a/mesalib/src/glsl/ir_hv_accept.cpp b/mesalib/src/glsl/ir_hv_accept.cpp index 559b71af3..76a607d17 100644 --- a/mesalib/src/glsl/ir_hv_accept.cpp +++ b/mesalib/src/glsl/ir_hv_accept.cpp @@ -415,3 +415,16 @@ ir_if::accept(ir_hierarchical_visitor *v) return v->visit_leave(this); } + +ir_visitor_status +ir_emit_vertex::accept(ir_hierarchical_visitor *v) +{ + return v->visit(this); +} + + +ir_visitor_status +ir_end_primitive::accept(ir_hierarchical_visitor *v) +{ + return v->visit(this); +} diff --git a/mesalib/src/glsl/ir_optimization.h b/mesalib/src/glsl/ir_optimization.h index 2c1479ff4..b79c2b787 100644 --- a/mesalib/src/glsl/ir_optimization.h +++ b/mesalib/src/glsl/ir_optimization.h @@ -77,7 +77,7 @@ bool do_copy_propagation(exec_list *instructions); bool do_copy_propagation_elements(exec_list *instructions); bool do_constant_propagation(exec_list *instructions); void do_dead_builtin_varyings(struct gl_context *ctx, - exec_list *producer, exec_list *consumer, + gl_shader *producer, gl_shader *consumer, unsigned num_tfeedback_decls, class tfeedback_decl *tfeedback_decls); bool do_dead_code(exec_list *instructions, bool uniform_locations_assigned); @@ -112,7 +112,7 @@ bool lower_packing_builtins(exec_list *instructions, int op_mask); void lower_ubo_reference(struct gl_shader *shader, exec_list *instructions); void lower_packed_varyings(void *mem_ctx, unsigned location_base, unsigned locations_used, ir_variable_mode mode, - gl_shader *shader); + unsigned gs_input_vertices, gl_shader *shader); bool lower_vector_insert(exec_list *instructions, bool lower_nonconstant_index); void lower_named_interface_blocks(void *mem_ctx, gl_shader *shader); bool optimize_redundant_jumps(exec_list *instructions); diff --git a/mesalib/src/glsl/ir_print_visitor.cpp b/mesalib/src/glsl/ir_print_visitor.cpp index ca973a5f3..541231a33 100644 --- a/mesalib/src/glsl/ir_print_visitor.cpp +++ b/mesalib/src/glsl/ir_print_visitor.cpp @@ -539,3 +539,15 @@ ir_print_visitor::visit(ir_loop_jump *ir) { printf("%s", ir->is_break() ? "break" : "continue"); } + +void +ir_print_visitor::visit(ir_emit_vertex *ir) +{ + printf("(emit-vertex)"); +} + +void +ir_print_visitor::visit(ir_end_primitive *ir) +{ + printf("(end-primitive)"); +} diff --git a/mesalib/src/glsl/ir_print_visitor.h b/mesalib/src/glsl/ir_print_visitor.h index a84056d16..865376fe0 100644 --- a/mesalib/src/glsl/ir_print_visitor.h +++ b/mesalib/src/glsl/ir_print_visitor.h @@ -69,6 +69,8 @@ public: virtual void visit(ir_if *); virtual void visit(ir_loop *); virtual void visit(ir_loop_jump *); + virtual void visit(ir_emit_vertex *); + virtual void visit(ir_end_primitive *); /*@}*/ private: diff --git a/mesalib/src/glsl/ir_reader.cpp b/mesalib/src/glsl/ir_reader.cpp index 51534ca7c..f263fe810 100644 --- a/mesalib/src/glsl/ir_reader.cpp +++ b/mesalib/src/glsl/ir_reader.cpp @@ -59,6 +59,8 @@ private: ir_swizzle *read_swizzle(s_expression *); ir_constant *read_constant(s_expression *); ir_texture *read_texture(s_expression *); + ir_emit_vertex *read_emit_vertex(s_expression *); + ir_end_primitive *read_end_primitive(s_expression *); ir_dereference *read_dereference(s_expression *); ir_dereference_variable *read_var_ref(s_expression *); @@ -355,6 +357,10 @@ ir_reader::read_instruction(s_expression *expr, ir_loop *loop_ctx) inst = read_return(list); } else if (strcmp(tag->value(), "function") == 0) { inst = read_function(list, false); + } else if (strcmp(tag->value(), "emit-vertex") == 0) { + inst = read_emit_vertex(list); + } else if (strcmp(tag->value(), "end-primitive") == 0) { + inst = read_end_primitive(list); } else { inst = read_rvalue(list); if (inst == NULL) @@ -1065,3 +1071,27 @@ ir_reader::read_texture(s_expression *expr) }; return tex; } + +ir_emit_vertex * +ir_reader::read_emit_vertex(s_expression *expr) +{ + s_pattern pat[] = { "emit-vertex" }; + + if (MATCH(expr, pat)) { + return new(mem_ctx) ir_emit_vertex(); + } + ir_read_error(NULL, "when reading emit-vertex"); + return NULL; +} + +ir_end_primitive * +ir_reader::read_end_primitive(s_expression *expr) +{ + s_pattern pat[] = { "end-primitive" }; + + if (MATCH(expr, pat)) { + return new(mem_ctx) ir_end_primitive(); + } + ir_read_error(NULL, "when reading end-primitive"); + return NULL; +} diff --git a/mesalib/src/glsl/ir_set_program_inouts.cpp b/mesalib/src/glsl/ir_set_program_inouts.cpp index 91a8b4526..6196d6a64 100644 --- a/mesalib/src/glsl/ir_set_program_inouts.cpp +++ b/mesalib/src/glsl/ir_set_program_inouts.cpp @@ -44,11 +44,10 @@ class ir_set_program_inouts_visitor : public ir_hierarchical_visitor { public: - ir_set_program_inouts_visitor(struct gl_program *prog, - bool is_fragment_shader) + ir_set_program_inouts_visitor(struct gl_program *prog, GLenum shader_type) { this->prog = prog; - this->is_fragment_shader = is_fragment_shader; + this->shader_type = shader_type; } ~ir_set_program_inouts_visitor() { @@ -60,8 +59,12 @@ public: virtual ir_visitor_status visit_enter(ir_discard *); virtual ir_visitor_status visit(ir_dereference_variable *); +private: + void mark_whole_variable(ir_variable *var); + bool try_mark_partial_variable(ir_variable *var, ir_rvalue *index); + struct gl_program *prog; - bool is_fragment_shader; + GLenum shader_type; }; static inline bool @@ -104,6 +107,23 @@ mark(struct gl_program *prog, ir_variable *var, int offset, int len, } } +/** + * Mark an entire variable as used. Caller must ensure that the variable + * represents a shader input or output. + */ +void +ir_set_program_inouts_visitor::mark_whole_variable(ir_variable *var) +{ + const glsl_type *type = var->type; + if (this->shader_type == GL_GEOMETRY_SHADER && + var->mode == ir_var_shader_in && type->is_array()) { + type = type->fields.array; + } + + mark(this->prog, var, 0, type->count_attribute_slots(), + this->shader_type == GL_FRAGMENT_SHADER); +} + /* Default handler: Mark all the locations in the variable as used. */ ir_visitor_status ir_set_program_inouts_visitor::visit(ir_dereference_variable *ir) @@ -111,43 +131,154 @@ ir_set_program_inouts_visitor::visit(ir_dereference_variable *ir) if (!is_shader_inout(ir->var)) return visit_continue; - if (ir->type->is_array()) { - mark(this->prog, ir->var, 0, - ir->type->length * ir->type->fields.array->matrix_columns, - this->is_fragment_shader); - } else { - mark(this->prog, ir->var, 0, ir->type->matrix_columns, - this->is_fragment_shader); - } + mark_whole_variable(ir->var); return visit_continue; } -ir_visitor_status -ir_set_program_inouts_visitor::visit_enter(ir_dereference_array *ir) +/** + * Try to mark a portion of the given variable as used. Caller must ensure + * that the variable represents a shader input or output which can be indexed + * into in array fashion (an array or matrix). For the purpose of geometry + * shader inputs (which are always arrays*), this means that the array element + * must be something that can be indexed into in array fashion. + * + * *Except gl_PrimitiveIDIn, as noted below. + * + * If the index can't be interpreted as a constant, or some other problem + * occurs, then nothing will be marked and false will be returned. + */ +bool +ir_set_program_inouts_visitor::try_mark_partial_variable(ir_variable *var, + ir_rvalue *index) { - ir_dereference_variable *deref_var; - ir_constant *index = ir->array_index->as_constant(); - deref_var = ir->array->as_dereference_variable(); - ir_variable *var = deref_var ? deref_var->var : NULL; + const glsl_type *type = var->type; - /* Check that we're dereferencing a shader in or out */ - if (!var || !is_shader_inout(var)) - return visit_continue; + if (this->shader_type == GL_GEOMETRY_SHADER && + var->mode == ir_var_shader_in) { + /* The only geometry shader input that is not an array is + * gl_PrimitiveIDIn, and in that case, this code will never be reached, + * because gl_PrimitiveIDIn can't be indexed into in array fashion. + */ + assert(type->is_array()); + type = type->fields.array; + } - if (index) { - int width = 1; + /* The code below only handles: + * + * - Indexing into matrices + * - Indexing into arrays of (matrices, vectors, or scalars) + * + * All other possibilities are either prohibited by GLSL (vertex inputs and + * fragment outputs can't be structs) or should have been eliminated by + * lowering passes (do_vec_index_to_swizzle() gets rid of indexing into + * vectors, and lower_packed_varyings() gets rid of structs that occur in + * varyings). + */ + if (!(type->is_matrix() || + (type->is_array() && + (type->fields.array->is_numeric() || + type->fields.array->is_boolean())))) { + assert(!"Unexpected indexing in ir_set_program_inouts"); - if (deref_var->type->is_array() && - deref_var->type->fields.array->is_matrix()) { - width = deref_var->type->fields.array->matrix_columns; - } + /* For safety in release builds, in case we ever encounter unexpected + * indexing, give up and let the caller mark the whole variable as used. + */ + return false; + } + + ir_constant *index_as_constant = index->as_constant(); + if (!index_as_constant) + return false; + + unsigned elem_width; + unsigned num_elems; + if (type->is_array()) { + num_elems = type->length; + if (type->fields.array->is_matrix()) + elem_width = type->fields.array->matrix_columns; + else + elem_width = 1; + } else { + num_elems = type->matrix_columns; + elem_width = 1; + } - mark(this->prog, var, index->value.i[0] * width, width, - this->is_fragment_shader); - return visit_continue_with_parent; + if (index_as_constant->value.u[0] >= num_elems) { + /* Constant index outside the bounds of the matrix/array. This could + * arise as a result of constant folding of a legal GLSL program. + * + * Even though the spec says that indexing outside the bounds of a + * matrix/array results in undefined behaviour, we don't want to pass + * out-of-range values to mark() (since this could result in slots that + * don't exist being marked as used), so just let the caller mark the + * whole variable as used. + */ + return false; } + mark(this->prog, var, index_as_constant->value.u[0] * elem_width, + elem_width, this->shader_type == GL_FRAGMENT_SHADER); + return true; +} + +ir_visitor_status +ir_set_program_inouts_visitor::visit_enter(ir_dereference_array *ir) +{ + /* Note: for geometry shader inputs, lower_named_interface_blocks may + * create 2D arrays, so we need to be able to handle those. 2D arrays + * shouldn't be able to crop up for any other reason. + */ + if (ir_dereference_array * const inner_array = + ir->array->as_dereference_array()) { + /* ir => foo[i][j] + * inner_array => foo[i] + */ + if (ir_dereference_variable * const deref_var = + inner_array->array->as_dereference_variable()) { + if (this->shader_type == GL_GEOMETRY_SHADER && + deref_var->var->mode == ir_var_shader_in) { + /* foo is a geometry shader input, so i is the vertex, and j the + * part of the input we're accessing. + */ + if (try_mark_partial_variable(deref_var->var, ir->array_index)) + { + /* We've now taken care of foo and j, but i might contain a + * subexpression that accesses shader inputs. So manually + * visit i and then continue with the parent. + */ + inner_array->array_index->accept(this); + return visit_continue_with_parent; + } + } + } + } else if (ir_dereference_variable * const deref_var = + ir->array->as_dereference_variable()) { + /* ir => foo[i], where foo is a variable. */ + if (this->shader_type == GL_GEOMETRY_SHADER && + deref_var->var->mode == ir_var_shader_in) { + /* foo is a geometry shader input, so i is the vertex, and we're + * accessing the entire input. + */ + mark_whole_variable(deref_var->var); + /* We've now taken care of foo, but i might contain a subexpression + * that accesses shader inputs. So manually visit i and then + * continue with the parent. + */ + ir->array_index->accept(this); + return visit_continue_with_parent; + } else if (is_shader_inout(deref_var->var)) { + /* foo is a shader input/output, but not a geometry shader input, + * so i is the part of the input we're accessing. + */ + if (try_mark_partial_variable(deref_var->var, ir->array_index)) + return visit_continue_with_parent; + } + } + + /* The expression is something we don't recognize. Just visit its + * subexpressions. + */ return visit_continue; } @@ -164,7 +295,8 @@ ir_set_program_inouts_visitor::visit_enter(ir_function_signature *ir) ir_visitor_status ir_set_program_inouts_visitor::visit_enter(ir_expression *ir) { - if (is_fragment_shader && ir->operation == ir_unop_dFdy) { + if (this->shader_type == GL_FRAGMENT_SHADER && + ir->operation == ir_unop_dFdy) { gl_fragment_program *fprog = (gl_fragment_program *) prog; fprog->UsesDFdy = true; } @@ -175,7 +307,7 @@ ir_visitor_status ir_set_program_inouts_visitor::visit_enter(ir_discard *) { /* discards are only allowed in fragment shaders. */ - assert(is_fragment_shader); + assert(this->shader_type == GL_FRAGMENT_SHADER); gl_fragment_program *fprog = (gl_fragment_program *) prog; fprog->UsesKill = true; @@ -185,14 +317,14 @@ ir_set_program_inouts_visitor::visit_enter(ir_discard *) void do_set_program_inouts(exec_list *instructions, struct gl_program *prog, - bool is_fragment_shader) + GLenum shader_type) { - ir_set_program_inouts_visitor v(prog, is_fragment_shader); + ir_set_program_inouts_visitor v(prog, shader_type); prog->InputsRead = 0; prog->OutputsWritten = 0; prog->SystemValuesRead = 0; - if (is_fragment_shader) { + if (shader_type == GL_FRAGMENT_SHADER) { gl_fragment_program *fprog = (gl_fragment_program *) prog; memset(fprog->InterpQualifier, 0, sizeof(fprog->InterpQualifier)); fprog->IsCentroid = 0; diff --git a/mesalib/src/glsl/ir_visitor.h b/mesalib/src/glsl/ir_visitor.h index bd47ef7d5..40f96ffbc 100644 --- a/mesalib/src/glsl/ir_visitor.h +++ b/mesalib/src/glsl/ir_visitor.h @@ -63,6 +63,8 @@ public: virtual void visit(class ir_if *) = 0; virtual void visit(class ir_loop *) = 0; virtual void visit(class ir_loop_jump *) = 0; + virtual void visit(class ir_emit_vertex *) = 0; + virtual void visit(class ir_end_primitive *) = 0; /*@}*/ }; @@ -81,6 +83,8 @@ public: virtual void visit(class ir_assignment *) {} virtual void visit(class ir_constant *) {} virtual void visit(class ir_call *) {} + virtual void visit(class ir_emit_vertex *) {} + virtual void visit(class ir_end_primitive *) {} }; #endif /* __cplusplus */ diff --git a/mesalib/src/glsl/link_varyings.cpp b/mesalib/src/glsl/link_varyings.cpp index 2c7e4514e..4ceb1d33e 100644 --- a/mesalib/src/glsl/link_varyings.cpp +++ b/mesalib/src/glsl/link_varyings.cpp @@ -68,6 +68,10 @@ cross_validate_outputs_to_inputs(struct gl_shader_program *prog, /* Find all shader inputs in the "consumer" stage. Any variables that have * matching outputs already in the symbol table must have the same type and * qualifiers. + * + * Exception: if the consumer is the geometry shader, then the inputs + * should be arrays and the type of the array element should match the type + * of the corresponding producer output. */ foreach_list(node, consumer->ir) { ir_variable *const input = ((ir_instruction *) node)->as_variable(); @@ -79,7 +83,12 @@ cross_validate_outputs_to_inputs(struct gl_shader_program *prog, if (output != NULL) { /* Check that the types match between stages. */ - if (input->type != output->type) { + const glsl_type *type_to_match = input->type; + if (consumer->Type == GL_GEOMETRY_SHADER) { + assert(type_to_match->is_array()); /* Enforced by ast_to_hir */ + type_to_match = type_to_match->element_type(); + } + if (type_to_match != output->type) { /* There is a bit of a special case for gl_TexCoord. This * built-in is unsized by default. Applications that variable * access it must redeclare it with a size. There is some @@ -973,6 +982,9 @@ private: * each of these objects that matches one of the outputs of the * producer. * + * \param gs_input_vertices: if \c consumer is a geometry shader, this is the + * number of input vertices it accepts. Otherwise zero. + * * When num_tfeedback_decls is nonzero, it is permissible for the consumer to * be NULL. In this case, varying locations are assigned solely based on the * requirements of transform feedback. @@ -983,7 +995,8 @@ assign_varying_locations(struct gl_context *ctx, struct gl_shader_program *prog, gl_shader *producer, gl_shader *consumer, unsigned num_tfeedback_decls, - tfeedback_decl *tfeedback_decls) + tfeedback_decl *tfeedback_decls, + unsigned gs_input_vertices) { const unsigned producer_base = VARYING_SLOT_VAR0; const unsigned consumer_base = VARYING_SLOT_VAR0; @@ -1104,10 +1117,10 @@ assign_varying_locations(struct gl_context *ctx, assert(!ctx->Extensions.EXT_transform_feedback); } else { lower_packed_varyings(mem_ctx, producer_base, slots_used, - ir_var_shader_out, producer); + ir_var_shader_out, 0, producer); if (consumer) { lower_packed_varyings(mem_ctx, consumer_base, slots_used, - ir_var_shader_in, consumer); + ir_var_shader_in, gs_input_vertices, consumer); } } @@ -1164,7 +1177,7 @@ check_against_varying_limit(struct gl_context *ctx, /* The packing rules used for vertex shader inputs are also * used for fragment shader inputs. */ - varying_vectors += count_attribute_slots(var->type); + varying_vectors += var->type->count_attribute_slots(); } } diff --git a/mesalib/src/glsl/link_varyings.h b/mesalib/src/glsl/link_varyings.h index cfc6e474f..302ab5c26 100644 --- a/mesalib/src/glsl/link_varyings.h +++ b/mesalib/src/glsl/link_varyings.h @@ -234,7 +234,8 @@ assign_varying_locations(struct gl_context *ctx, struct gl_shader_program *prog, gl_shader *producer, gl_shader *consumer, unsigned num_tfeedback_decls, - tfeedback_decl *tfeedback_decls); + tfeedback_decl *tfeedback_decls, + unsigned gs_input_vertices); bool check_against_varying_limit(struct gl_context *ctx, diff --git a/mesalib/src/glsl/linker.cpp b/mesalib/src/glsl/linker.cpp index 942f90615..f87ae0eec 100644 --- a/mesalib/src/glsl/linker.cpp +++ b/mesalib/src/glsl/linker.cpp @@ -73,11 +73,15 @@ #include "linker.h" #include "link_varyings.h" #include "ir_optimization.h" +#include "ir_rvalue_visitor.h" extern "C" { #include "main/shaderobj.h" +#include "main/enums.h" } +void linker_error(gl_shader_program *, const char *, ...); + /** * Visitor that determines whether or not a variable is ever written. */ @@ -174,6 +178,77 @@ private: }; +class geom_array_resize_visitor : public ir_hierarchical_visitor { +public: + unsigned num_vertices; + gl_shader_program *prog; + + geom_array_resize_visitor(unsigned num_vertices, gl_shader_program *prog) + { + this->num_vertices = num_vertices; + this->prog = prog; + } + + virtual ~geom_array_resize_visitor() + { + /* empty */ + } + + virtual ir_visitor_status visit(ir_variable *var) + { + if (!var->type->is_array() || var->mode != ir_var_shader_in) + return visit_continue; + + unsigned size = var->type->length; + + /* Generate a link error if the shader has declared this array with an + * incorrect size. + */ + if (size && size != this->num_vertices) { + linker_error(this->prog, "size of array %s declared as %u, " + "but number of input vertices is %u\n", + var->name, size, this->num_vertices); + return visit_continue; + } + + /* Generate a link error if the shader attempts to access an input + * array using an index too large for its actual size assigned at link + * time. + */ + if (var->max_array_access >= this->num_vertices) { + linker_error(this->prog, "geometry shader accesses element %i of " + "%s, but only %i input vertices\n", + var->max_array_access, var->name, this->num_vertices); + return visit_continue; + } + + var->type = glsl_type::get_array_instance(var->type->element_type(), + this->num_vertices); + var->max_array_access = this->num_vertices - 1; + + return visit_continue; + } + + /* Dereferences of input variables need to be updated so that their type + * matches the newly assigned type of the variable they are accessing. */ + virtual ir_visitor_status visit(ir_dereference_variable *ir) + { + ir->type = ir->var->type; + return visit_continue; + } + + /* Dereferences of 2D input arrays need to be updated so that their type + * matches the newly assigned type of the array they are accessing. */ + virtual ir_visitor_status visit_leave(ir_dereference_array *ir) + { + const glsl_type *const vt = ir->array->type; + if (vt->is_array()) + ir->type = vt->element_type(); + return visit_continue; + } +}; + + void linker_error(gl_shader_program *prog, const char *fmt, ...) { @@ -298,41 +373,6 @@ link_invalidate_variable_locations(gl_shader *sh, int input_base, /** - * Determine the number of attribute slots required for a particular type - * - * This code is here because it implements the language rules of a specific - * GLSL version. Since it's a property of the language and not a property of - * types in general, it doesn't really belong in glsl_type. - */ -unsigned -count_attribute_slots(const glsl_type *t) -{ - /* From page 31 (page 37 of the PDF) of the GLSL 1.50 spec: - * - * "A scalar input counts the same amount against this limit as a vec4, - * so applications may want to consider packing groups of four - * unrelated float inputs together into a vector to better utilize the - * capabilities of the underlying hardware. A matrix input will use up - * multiple locations. The number of locations used will equal the - * number of columns in the matrix." - * - * The spec does not explicitly say how arrays are counted. However, it - * should be safe to assume the total number of slots consumed by an array - * is the number of entries in the array multiplied by the number of slots - * consumed by a single element of the array. - */ - - if (t->is_array()) - return t->array_size() * count_attribute_slots(t->element_type()); - - if (t->is_matrix()) - return t->matrix_columns; - - return 1; -} - - -/** * Verify that a vertex shader executable meets all semantic requirements. * * Also sets prog->Vert.UsesClipDistance and prog->Vert.ClipDistanceArraySize @@ -437,6 +477,24 @@ validate_fragment_shader_executable(struct gl_shader_program *prog, } } +/** + * Verify that a geometry shader executable meets all semantic requirements + * + * Also sets prog->Geom.VerticesIn as a side effect. + * + * \param shader Geometry shader executable to be verified + */ +void +validate_geometry_shader_executable(struct gl_shader_program *prog, + struct gl_shader *shader) +{ + if (shader == NULL) + return; + + unsigned num_vertices = vertices_per_prim(prog->Geom.InputType); + prog->Geom.VerticesIn = num_vertices; +} + /** * Generate a string describing the mode of a variable @@ -931,6 +989,99 @@ public: }; /** + * Performs the cross-validation of geometry shader max_vertices and + * primitive type layout qualifiers for the attached geometry shaders, + * and propagates them to the linked GS and linked shader program. + */ +static void +link_gs_inout_layout_qualifiers(struct gl_shader_program *prog, + struct gl_shader *linked_shader, + struct gl_shader **shader_list, + unsigned num_shaders) +{ + linked_shader->Geom.VerticesOut = 0; + linked_shader->Geom.InputType = PRIM_UNKNOWN; + linked_shader->Geom.OutputType = PRIM_UNKNOWN; + + /* No in/out qualifiers defined for anything but GLSL 1.50+ + * geometry shaders so far. + */ + if (linked_shader->Type != GL_GEOMETRY_SHADER || prog->Version < 150) + return; + + /* From the GLSL 1.50 spec, page 46: + * + * "All geometry shader output layout declarations in a program + * must declare the same layout and same value for + * max_vertices. There must be at least one geometry output + * layout declaration somewhere in a program, but not all + * geometry shaders (compilation units) are required to + * declare it." + */ + + for (unsigned i = 0; i < num_shaders; i++) { + struct gl_shader *shader = shader_list[i]; + + if (shader->Geom.InputType != PRIM_UNKNOWN) { + if (linked_shader->Geom.InputType != PRIM_UNKNOWN && + linked_shader->Geom.InputType != shader->Geom.InputType) { + linker_error(prog, "geometry shader defined with conflicting " + "input types\n"); + return; + } + linked_shader->Geom.InputType = shader->Geom.InputType; + } + + if (shader->Geom.OutputType != PRIM_UNKNOWN) { + if (linked_shader->Geom.OutputType != PRIM_UNKNOWN && + linked_shader->Geom.OutputType != shader->Geom.OutputType) { + linker_error(prog, "geometry shader defined with conflicting " + "output types\n"); + return; + } + linked_shader->Geom.OutputType = shader->Geom.OutputType; + } + + if (shader->Geom.VerticesOut != 0) { + if (linked_shader->Geom.VerticesOut != 0 && + linked_shader->Geom.VerticesOut != shader->Geom.VerticesOut) { + linker_error(prog, "geometry shader defined with conflicting " + "output vertex count (%d and %d)\n", + linked_shader->Geom.VerticesOut, + shader->Geom.VerticesOut); + return; + } + linked_shader->Geom.VerticesOut = shader->Geom.VerticesOut; + } + } + + /* Just do the intrastage -> interstage propagation right now, + * since we already know we're in the right type of shader program + * for doing it. + */ + if (linked_shader->Geom.InputType == PRIM_UNKNOWN) { + linker_error(prog, + "geometry shader didn't declare primitive input type\n"); + return; + } + prog->Geom.InputType = linked_shader->Geom.InputType; + + if (linked_shader->Geom.OutputType == PRIM_UNKNOWN) { + linker_error(prog, + "geometry shader didn't declare primitive output type\n"); + return; + } + prog->Geom.OutputType = linked_shader->Geom.OutputType; + + if (linked_shader->Geom.VerticesOut == 0) { + linker_error(prog, + "geometry shader didn't declare max_vertices\n"); + return; + } + prog->Geom.VerticesOut = linked_shader->Geom.VerticesOut; +} + +/** * Combine a group of shaders for a single stage to generate a linked shader * * \note @@ -1034,6 +1185,8 @@ link_intrastage_shaders(void *mem_ctx, linked->NumUniformBlocks = num_uniform_blocks; ralloc_steal(linked, linked->UniformBlocks); + link_gs_inout_layout_qualifiers(prog, linked, shader_list, num_shaders); + populate_symbol_table(linked); /* The a pointer to the main function in the final linked shader (i.e., the @@ -1080,7 +1233,8 @@ link_intrastage_shaders(void *mem_ctx, if (!link_function_calls(prog, linked, linking_shaders, num_linking_shaders)) { ctx->Driver.DeleteShader(ctx, linked); - linked = NULL; + free(linking_shaders); + return NULL; } free(linking_shaders); @@ -1088,18 +1242,24 @@ link_intrastage_shaders(void *mem_ctx, /* At this point linked should contain all of the linked IR, so * validate it to make sure nothing went wrong. */ - if (linked) - validate_ir_tree(linked->ir); + validate_ir_tree(linked->ir); + + /* Set the size of geometry shader input arrays */ + if (linked->Type == GL_GEOMETRY_SHADER) { + unsigned num_vertices = vertices_per_prim(prog->Geom.InputType); + geom_array_resize_visitor input_resize_visitor(num_vertices, prog); + foreach_iter(exec_list_iterator, iter, *linked->ir) { + ir_instruction *ir = (ir_instruction *)iter.get(); + ir->accept(&input_resize_visitor); + } + } /* Make a pass over all variable declarations to ensure that arrays with * unspecified sizes have a size specified. The size is inferred from the * max_array_access field. */ - if (linked != NULL) { - array_sizing_visitor v; - - v.run(linked->ir); - } + array_sizing_visitor v; + v.run(linked->ir); return linked; } @@ -1129,9 +1289,7 @@ update_array_sizes(struct gl_shader_program *prog) foreach_list(node, prog->_LinkedShaders[i]->ir) { ir_variable *const var = ((ir_instruction *) node)->as_variable(); - if ((var == NULL) || (var->mode != ir_var_uniform && - var->mode != ir_var_shader_in && - var->mode != ir_var_shader_out) || + if ((var == NULL) || (var->mode != ir_var_uniform) || !var->type->is_array()) continue; @@ -1334,7 +1492,7 @@ assign_attribute_or_color_locations(gl_shader_program *prog, * that it doesn't collide with other assigned locations. Otherwise, * add it to the list of variables that need linker-assigned locations. */ - const unsigned slots = count_attribute_slots(var->type); + const unsigned slots = var->type->count_attribute_slots(); if (var->location != -1) { if (var->location >= generic_base && var->index < 1) { /* From page 61 of the OpenGL 4.0 spec: @@ -1650,10 +1808,15 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog) unsigned num_vert_shaders = 0; struct gl_shader **frag_shader_list; unsigned num_frag_shaders = 0; + struct gl_shader **geom_shader_list; + unsigned num_geom_shaders = 0; vert_shader_list = (struct gl_shader **) - calloc(2 * prog->NumShaders, sizeof(struct gl_shader *)); - frag_shader_list = &vert_shader_list[prog->NumShaders]; + calloc(prog->NumShaders, sizeof(struct gl_shader *)); + frag_shader_list = (struct gl_shader **) + calloc(prog->NumShaders, sizeof(struct gl_shader *)); + geom_shader_list = (struct gl_shader **) + calloc(prog->NumShaders, sizeof(struct gl_shader *)); unsigned min_version = UINT_MAX; unsigned max_version = 0; @@ -1679,8 +1842,8 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog) num_frag_shaders++; break; case GL_GEOMETRY_SHADER: - /* FINISHME: Support geometry shaders. */ - assert(prog->Shaders[i]->Type != GL_GEOMETRY_SHADER); + geom_shader_list[num_geom_shaders] = prog->Shaders[i]; + num_geom_shaders++; break; } } @@ -1701,6 +1864,14 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog) prog->Version = max_version; prog->IsES = is_es_prog; + /* Geometry shaders have to be linked with vertex shaders. + */ + if (num_geom_shaders > 0 && num_vert_shaders == 0) { + linker_error(prog, "Geometry shader must be linked with " + "vertex shader\n"); + goto done; + } + for (unsigned int i = 0; i < MESA_SHADER_TYPES; i++) { if (prog->_LinkedShaders[i] != NULL) ctx->Driver.DeleteShader(ctx, prog->_LinkedShaders[i]); @@ -1742,6 +1913,22 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog) sh); } + if (num_geom_shaders > 0) { + gl_shader *const sh = + link_intrastage_shaders(mem_ctx, ctx, prog, geom_shader_list, + num_geom_shaders); + + if (!prog->LinkStatus) + goto done; + + validate_geometry_shader_executable(prog, sh); + if (!prog->LinkStatus) + goto done; + + _mesa_reference_shader(ctx, &prog->_LinkedShaders[MESA_SHADER_GEOMETRY], + sh); + } + /* Here begins the inter-stage linking phase. Some initial validation is * performed, then locations are assigned for uniforms, attributes, and * varyings. @@ -1828,7 +2015,11 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog) prog->_LinkedShaders[MESA_SHADER_VERTEX], VERT_ATTRIB_GENERIC0, VARYING_SLOT_VAR0); } - /* FINISHME: Geometry shaders not implemented yet */ + if (prog->_LinkedShaders[MESA_SHADER_GEOMETRY] != NULL) { + link_invalidate_variable_locations( + prog->_LinkedShaders[MESA_SHADER_GEOMETRY], + VARYING_SLOT_VAR0, VARYING_SLOT_VAR0); + } if (prog->_LinkedShaders[MESA_SHADER_FRAGMENT] != NULL) { link_invalidate_variable_locations( prog->_LinkedShaders[MESA_SHADER_FRAGMENT], @@ -1862,7 +2053,7 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog) * non-zero, but the program object has no vertex or geometry * shader; */ - if (first >= MESA_SHADER_FRAGMENT) { + if (first == MESA_SHADER_FRAGMENT) { linker_error(prog, "Transform feedback varyings specified, but " "no vertex or geometry shader is present."); goto done; @@ -1895,11 +2086,12 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog) */ if (!assign_varying_locations(ctx, mem_ctx, prog, sh, NULL, - num_tfeedback_decls, tfeedback_decls)) + num_tfeedback_decls, tfeedback_decls, + 0)) goto done; } - do_dead_builtin_varyings(ctx, sh->ir, NULL, + do_dead_builtin_varyings(ctx, sh, NULL, num_tfeedback_decls, tfeedback_decls); demote_shader_inputs_and_outputs(sh, ir_var_shader_out); @@ -1914,7 +2106,7 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog) */ gl_shader *const sh = prog->_LinkedShaders[first]; - do_dead_builtin_varyings(ctx, NULL, sh->ir, + do_dead_builtin_varyings(ctx, NULL, sh, num_tfeedback_decls, tfeedback_decls); demote_shader_inputs_and_outputs(sh, ir_var_shader_in); @@ -1930,13 +2122,15 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog) gl_shader *const sh_i = prog->_LinkedShaders[i]; gl_shader *const sh_next = prog->_LinkedShaders[next]; + unsigned gs_input_vertices = + next == MESA_SHADER_GEOMETRY ? prog->Geom.VerticesIn : 0; if (!assign_varying_locations(ctx, mem_ctx, prog, sh_i, sh_next, next == MESA_SHADER_FRAGMENT ? num_tfeedback_decls : 0, - tfeedback_decls)) + tfeedback_decls, gs_input_vertices)) goto done; - do_dead_builtin_varyings(ctx, sh_i->ir, sh_next->ir, + do_dead_builtin_varyings(ctx, sh_i, sh_next, next == MESA_SHADER_FRAGMENT ? num_tfeedback_decls : 0, tfeedback_decls); @@ -1985,6 +2179,8 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog) done: free(vert_shader_list); + free(frag_shader_list); + free(geom_shader_list); for (unsigned i = 0; i < MESA_SHADER_TYPES; i++) { if (prog->_LinkedShaders[i] == NULL) diff --git a/mesalib/src/glsl/linker.h b/mesalib/src/glsl/linker.h index 0ce747d6c..64a683d15 100644 --- a/mesalib/src/glsl/linker.h +++ b/mesalib/src/glsl/linker.h @@ -155,7 +155,4 @@ linker_error(gl_shader_program *prog, const char *fmt, ...); void linker_warning(gl_shader_program *prog, const char *fmt, ...); -unsigned -count_attribute_slots(const glsl_type *t); - #endif /* GLSL_LINKER_H */ diff --git a/mesalib/src/glsl/lower_output_reads.cpp b/mesalib/src/glsl/lower_output_reads.cpp index b93e254ec..5ba9720d0 100644 --- a/mesalib/src/glsl/lower_output_reads.cpp +++ b/mesalib/src/glsl/lower_output_reads.cpp @@ -50,6 +50,7 @@ public: output_read_remover(); ~output_read_remover(); virtual ir_visitor_status visit(class ir_dereference_variable *); + virtual ir_visitor_status visit(class ir_emit_vertex *); virtual ir_visitor_status visit_leave(class ir_return *); virtual ir_visitor_status visit_leave(class ir_function_signature *); }; @@ -117,7 +118,9 @@ copy(void *ctx, ir_variable *output, ir_variable *temp) return new(ctx) ir_assignment(lhs, rhs); } -/** Insert a copy-back assignment before a "return" statement */ +/** Insert a copy-back assignment before a "return" statement or a call to + * EmitVertex(). + */ static void emit_return_copy(const void *key, void *data, void *closure) { @@ -141,6 +144,14 @@ output_read_remover::visit_leave(ir_return *ir) } ir_visitor_status +output_read_remover::visit(ir_emit_vertex *ir) +{ + hash_table_call_foreach(replacements, emit_return_copy, ir); + hash_table_clear(replacements); + return visit_continue; +} + +ir_visitor_status output_read_remover::visit_leave(ir_function_signature *sig) { if (strcmp(sig->function_name(), "main") != 0) diff --git a/mesalib/src/glsl/lower_packed_varyings.cpp b/mesalib/src/glsl/lower_packed_varyings.cpp index cdf2289b4..31a50bba5 100644 --- a/mesalib/src/glsl/lower_packed_varyings.cpp +++ b/mesalib/src/glsl/lower_packed_varyings.cpp @@ -74,6 +74,74 @@ * This lowering pass also handles varyings whose type is a struct or an array * of struct. Structs are packed in order and with no gaps, so there may be a * performance penalty due to structure elements being double-parked. + * + * Lowering of geometry shader inputs is slightly more complex, since geometry + * inputs are always arrays, so we need to lower arrays to arrays. For + * example, the following input: + * + * in struct Foo { + * float f; + * vec3 v; + * vec2 a[2]; + * } arr[3]; // location=4, location_frac=0 + * + * Would get lowered like this if it occurred in a fragment shader: + * + * struct Foo { + * float f; + * vec3 v; + * vec2 a[2]; + * } arr[3]; + * in vec4 packed4; // location=4, location_frac=0 + * in vec4 packed5; // location=5, location_frac=0 + * in vec4 packed6; // location=6, location_frac=0 + * in vec4 packed7; // location=7, location_frac=0 + * in vec4 packed8; // location=8, location_frac=0 + * in vec4 packed9; // location=9, location_frac=0 + * + * main() + * { + * arr[0].f = packed4.x; + * arr[0].v = packed4.yzw; + * arr[0].a[0] = packed5.xy; + * arr[0].a[1] = packed5.zw; + * arr[1].f = packed6.x; + * arr[1].v = packed6.yzw; + * arr[1].a[0] = packed7.xy; + * arr[1].a[1] = packed7.zw; + * arr[2].f = packed8.x; + * arr[2].v = packed8.yzw; + * arr[2].a[0] = packed9.xy; + * arr[2].a[1] = packed9.zw; + * ... + * } + * + * But it would get lowered like this if it occurred in a geometry shader: + * + * struct Foo { + * float f; + * vec3 v; + * vec2 a[2]; + * } arr[3]; + * in vec4 packed4[3]; // location=4, location_frac=0 + * in vec4 packed5[3]; // location=5, location_frac=0 + * + * main() + * { + * arr[0].f = packed4[0].x; + * arr[0].v = packed4[0].yzw; + * arr[0].a[0] = packed5[0].xy; + * arr[0].a[1] = packed5[0].zw; + * arr[1].f = packed4[1].x; + * arr[1].v = packed4[1].yzw; + * arr[1].a[0] = packed5[1].xy; + * arr[1].a[1] = packed5[1].zw; + * arr[2].f = packed4[2].x; + * arr[2].v = packed4[2].yzw; + * arr[2].a[0] = packed5[2].xy; + * arr[2].a[1] = packed5[2].zw; + * ... + * } */ #include "glsl_symbol_table.h" @@ -93,7 +161,8 @@ public: lower_packed_varyings_visitor(void *mem_ctx, unsigned location_base, unsigned locations_used, ir_variable_mode mode, - exec_list *main_instructions); + unsigned gs_input_vertices, + exec_list *out_instructions); void run(exec_list *instructions); @@ -101,13 +170,16 @@ private: ir_assignment *bitwise_assign_pack(ir_rvalue *lhs, ir_rvalue *rhs); ir_assignment *bitwise_assign_unpack(ir_rvalue *lhs, ir_rvalue *rhs); unsigned lower_rvalue(ir_rvalue *rvalue, unsigned fine_location, - ir_variable *unpacked_var, const char *name); + ir_variable *unpacked_var, const char *name, + bool gs_input_toplevel, unsigned vertex_index); unsigned lower_arraylike(ir_rvalue *rvalue, unsigned array_size, unsigned fine_location, - ir_variable *unpacked_var, const char *name); - ir_variable *get_packed_varying(unsigned location, - ir_variable *unpacked_var, - const char *name); + ir_variable *unpacked_var, const char *name, + bool gs_input_toplevel, unsigned vertex_index); + ir_dereference *get_packed_varying_deref(unsigned location, + ir_variable *unpacked_var, + const char *name, + unsigned vertex_index); bool needs_lowering(ir_variable *var); /** @@ -145,15 +217,23 @@ private: const ir_variable_mode mode; /** - * List of instructions corresponding to the main() function. This is - * where we add instructions to pack or unpack the varyings. + * If we are currently lowering geometry shader inputs, the number of input + * vertices the geometry shader accepts. Otherwise zero. */ - exec_list *main_instructions; + const unsigned gs_input_vertices; + + /** + * Exec list into which the visitor should insert the packing instructions. + * Caller provides this list; it should insert the instructions into the + * appropriate place in the shader once the visitor has finished running. + */ + exec_list *out_instructions; }; lower_packed_varyings_visitor::lower_packed_varyings_visitor( void *mem_ctx, unsigned location_base, unsigned locations_used, - ir_variable_mode mode, exec_list *main_instructions) + ir_variable_mode mode, unsigned gs_input_vertices, + exec_list *out_instructions) : mem_ctx(mem_ctx), location_base(location_base), locations_used(locations_used), @@ -161,7 +241,8 @@ lower_packed_varyings_visitor::lower_packed_varyings_visitor( rzalloc_array_size(mem_ctx, sizeof(*packed_varyings), locations_used)), mode(mode), - main_instructions(main_instructions) + gs_input_vertices(gs_input_vertices), + out_instructions(out_instructions) { } @@ -195,7 +276,7 @@ lower_packed_varyings_visitor::run(exec_list *instructions) /* Recursively pack or unpack it. */ this->lower_rvalue(deref, var->location * 4 + var->location_frac, var, - var->name); + var->name, this->gs_input_vertices != 0, 0); } } @@ -277,6 +358,15 @@ lower_packed_varyings_visitor::bitwise_assign_unpack(ir_rvalue *lhs, * in multiples of a float, rather than multiples of a vec4 as is used * elsewhere in Mesa. * + * \param gs_input_toplevel should be set to true if we are lowering geometry + * shader inputs, and we are currently lowering the whole input variable + * (i.e. we are lowering the array whose index selects the vertex). + * + * \param vertex_index: if we are lowering geometry shader inputs, and the + * level of the array that we are currently lowering is *not* the top level, + * then this indicates which vertex we are currently lowering. Otherwise it + * is ignored. + * * \return the location where the next constituent vector (after this one) * should be packed. */ @@ -284,8 +374,15 @@ unsigned lower_packed_varyings_visitor::lower_rvalue(ir_rvalue *rvalue, unsigned fine_location, ir_variable *unpacked_var, - const char *name) + const char *name, + bool gs_input_toplevel, + unsigned vertex_index) { + /* When gs_input_toplevel is set, we should be looking at a geometry shader + * input array. + */ + assert(!gs_input_toplevel || rvalue->type->is_array()); + if (rvalue->type->is_record()) { for (unsigned i = 0; i < rvalue->type->length; i++) { if (i != 0) @@ -296,7 +393,8 @@ lower_packed_varyings_visitor::lower_rvalue(ir_rvalue *rvalue, char *deref_name = ralloc_asprintf(this->mem_ctx, "%s.%s", name, field_name); fine_location = this->lower_rvalue(dereference_record, fine_location, - unpacked_var, deref_name); + unpacked_var, deref_name, false, + vertex_index); } return fine_location; } else if (rvalue->type->is_array()) { @@ -304,13 +402,15 @@ lower_packed_varyings_visitor::lower_rvalue(ir_rvalue *rvalue, * sequence. */ return this->lower_arraylike(rvalue, rvalue->type->array_size(), - fine_location, unpacked_var, name); + fine_location, unpacked_var, name, + gs_input_toplevel, vertex_index); } else if (rvalue->type->is_matrix()) { /* Matrices are packed/unpacked by considering each column vector in * sequence. */ return this->lower_arraylike(rvalue, rvalue->type->matrix_columns, - fine_location, unpacked_var, name); + fine_location, unpacked_var, name, + false, vertex_index); } else if (rvalue->type->vector_elements + fine_location % 4 > 4) { /* This vector is going to be "double parked" across two varying slots, * so handle it as two separate assignments. @@ -340,9 +440,10 @@ lower_packed_varyings_visitor::lower_rvalue(ir_rvalue *rvalue, char *right_name = ralloc_asprintf(this->mem_ctx, "%s.%s", name, right_swizzle_name); fine_location = this->lower_rvalue(left_swizzle, fine_location, - unpacked_var, left_name); + unpacked_var, left_name, false, + vertex_index); return this->lower_rvalue(right_swizzle, fine_location, unpacked_var, - right_name); + right_name, false, vertex_index); } else { /* No special handling is necessary; pack the rvalue into the * varying. @@ -353,19 +454,19 @@ lower_packed_varyings_visitor::lower_rvalue(ir_rvalue *rvalue, unsigned location_frac = fine_location % 4; for (unsigned i = 0; i < components; ++i) swizzle_values[i] = i + location_frac; - ir_dereference_variable *packed_deref = new(this->mem_ctx) - ir_dereference_variable(this->get_packed_varying(location, - unpacked_var, name)); + ir_dereference *packed_deref = + this->get_packed_varying_deref(location, unpacked_var, name, + vertex_index); ir_swizzle *swizzle = new(this->mem_ctx) ir_swizzle(packed_deref, swizzle_values, components); if (this->mode == ir_var_shader_out) { ir_assignment *assignment = this->bitwise_assign_pack(swizzle, rvalue); - this->main_instructions->push_tail(assignment); + this->out_instructions->push_tail(assignment); } else { ir_assignment *assignment = this->bitwise_assign_unpack(rvalue, swizzle); - this->main_instructions->push_head(assignment); + this->out_instructions->push_tail(assignment); } return fine_location + components; } @@ -376,13 +477,24 @@ lower_packed_varyings_visitor::lower_rvalue(ir_rvalue *rvalue, * constituent elements, accessing each one using an ir_dereference_array. * This takes care of both arrays and matrices, since ir_dereference_array * treats a matrix like an array of its column vectors. + * + * \param gs_input_toplevel should be set to true if we are lowering geometry + * shader inputs, and we are currently lowering the whole input variable + * (i.e. we are lowering the array whose index selects the vertex). + * + * \param vertex_index: if we are lowering geometry shader inputs, and the + * level of the array that we are currently lowering is *not* the top level, + * then this indicates which vertex we are currently lowering. Otherwise it + * is ignored. */ unsigned lower_packed_varyings_visitor::lower_arraylike(ir_rvalue *rvalue, unsigned array_size, unsigned fine_location, ir_variable *unpacked_var, - const char *name) + const char *name, + bool gs_input_toplevel, + unsigned vertex_index) { for (unsigned i = 0; i < array_size; i++) { if (i != 0) @@ -392,8 +504,20 @@ lower_packed_varyings_visitor::lower_arraylike(ir_rvalue *rvalue, ir_dereference_array(rvalue, constant); char *subscripted_name = ralloc_asprintf(this->mem_ctx, "%s[%d]", name, i); - fine_location = this->lower_rvalue(dereference_array, fine_location, - unpacked_var, subscripted_name); + if (gs_input_toplevel) { + /* Geometry shader inputs are a special case. Instead of storing + * each element of the array at a different location, all elements + * are at the same location, but with a different vertex index. + */ + (void) this->lower_rvalue(dereference_array, fine_location, + unpacked_var, subscripted_name, + false, i); + } else { + fine_location = + this->lower_rvalue(dereference_array, fine_location, + unpacked_var, subscripted_name, + false, vertex_index); + } } return fine_location; } @@ -406,11 +530,14 @@ lower_packed_varyings_visitor::lower_arraylike(ir_rvalue *rvalue, * The newly created varying inherits its interpolation parameters from \c * unpacked_var. Its base type is ivec4 if we are lowering a flat varying, * vec4 otherwise. + * + * \param vertex_index: if we are lowering geometry shader inputs, then this + * indicates which vertex we are currently lowering. Otherwise it is ignored. */ -ir_variable * -lower_packed_varyings_visitor::get_packed_varying(unsigned location, - ir_variable *unpacked_var, - const char *name) +ir_dereference * +lower_packed_varyings_visitor::get_packed_varying_deref( + unsigned location, ir_variable *unpacked_var, const char *name, + unsigned vertex_index) { unsigned slot = location - this->location_base; assert(slot < locations_used); @@ -421,18 +548,44 @@ lower_packed_varyings_visitor::get_packed_varying(unsigned location, packed_type = glsl_type::ivec4_type; else packed_type = glsl_type::vec4_type; + if (this->gs_input_vertices != 0) { + packed_type = + glsl_type::get_array_instance(packed_type, + this->gs_input_vertices); + } ir_variable *packed_var = new(this->mem_ctx) ir_variable(packed_type, packed_name, this->mode); + if (this->gs_input_vertices != 0) { + /* Prevent update_array_sizes() from messing with the size of the + * array. + */ + packed_var->max_array_access = this->gs_input_vertices - 1; + } packed_var->centroid = unpacked_var->centroid; packed_var->interpolation = unpacked_var->interpolation; packed_var->location = location; unpacked_var->insert_before(packed_var); this->packed_varyings[slot] = packed_var; } else { - ralloc_asprintf_append((char **) &this->packed_varyings[slot]->name, - ",%s", name); + /* For geometry shader inputs, only update the packed variable name the + * first time we visit each component. + */ + if (this->gs_input_vertices == 0 || vertex_index == 0) { + ralloc_asprintf_append((char **) &this->packed_varyings[slot]->name, + ",%s", name); + } + } + + ir_dereference *deref = new(this->mem_ctx) + ir_dereference_variable(this->packed_varyings[slot]); + if (this->gs_input_vertices != 0) { + /* When lowering GS inputs, the packed variable is an array, so we need + * to dereference it using vertex_index. + */ + ir_constant *constant = new(this->mem_ctx) ir_constant(vertex_index); + deref = new(this->mem_ctx) ir_dereference_array(deref, constant); } - return this->packed_varyings[slot]; + return deref; } bool @@ -440,6 +593,10 @@ lower_packed_varyings_visitor::needs_lowering(ir_variable *var) { /* Things composed of vec4's don't need lowering. Everything else does. */ const glsl_type *type = var->type; + if (this->gs_input_vertices != 0) { + assert(type->is_array()); + type = type->element_type(); + } if (type->is_array()) type = type->fields.array; if (type->vector_elements == 4) @@ -447,19 +604,81 @@ lower_packed_varyings_visitor::needs_lowering(ir_variable *var) return true; } + +/** + * Visitor that splices varying packing code before every use of EmitVertex() + * in a geometry shader. + */ +class lower_packed_varyings_gs_splicer : public ir_hierarchical_visitor +{ +public: + explicit lower_packed_varyings_gs_splicer(void *mem_ctx, + const exec_list *instructions); + + virtual ir_visitor_status visit(ir_emit_vertex *ev); + +private: + /** + * Memory context used to allocate new instructions for the shader. + */ + void * const mem_ctx; + + /** + * Instructions that should be spliced into place before each EmitVertex() + * call. + */ + const exec_list *instructions; +}; + + +lower_packed_varyings_gs_splicer::lower_packed_varyings_gs_splicer( + void *mem_ctx, const exec_list *instructions) + : mem_ctx(mem_ctx), instructions(instructions) +{ +} + + +ir_visitor_status +lower_packed_varyings_gs_splicer::visit(ir_emit_vertex *ev) +{ + foreach_list(node, this->instructions) { + ir_instruction *ir = (ir_instruction *) node; + ev->insert_before(ir->clone(this->mem_ctx, NULL)); + } + return visit_continue; +} + + void lower_packed_varyings(void *mem_ctx, unsigned location_base, unsigned locations_used, ir_variable_mode mode, - gl_shader *shader) + unsigned gs_input_vertices, gl_shader *shader) { exec_list *instructions = shader->ir; ir_function *main_func = shader->symbols->get_function("main"); exec_list void_parameters; ir_function_signature *main_func_sig = main_func->matching_signature(&void_parameters); - exec_list *main_instructions = &main_func_sig->body; + exec_list new_instructions; lower_packed_varyings_visitor visitor(mem_ctx, location_base, locations_used, mode, - main_instructions); + gs_input_vertices, &new_instructions); visitor.run(instructions); + if (mode == ir_var_shader_out) { + if (shader->Type == GL_GEOMETRY_SHADER) { + /* For geometry shaders, outputs need to be lowered before each call + * to EmitVertex() + */ + lower_packed_varyings_gs_splicer splicer(mem_ctx, &new_instructions); + splicer.run(instructions); + } else { + /* For other shader types, outputs need to be lowered at the end of + * main() + */ + main_func_sig->body.append_list(&new_instructions); + } + } else { + /* Shader inputs need to be lowered at the beginning of main() */ + main_func_sig->body.head->insert_before(&new_instructions); + } } diff --git a/mesalib/src/glsl/opt_dead_builtin_varyings.cpp b/mesalib/src/glsl/opt_dead_builtin_varyings.cpp index 2e813d24e..6745d5c64 100644 --- a/mesalib/src/glsl/opt_dead_builtin_varyings.cpp +++ b/mesalib/src/glsl/opt_dead_builtin_varyings.cpp @@ -409,7 +409,7 @@ lower_texcoord_array(exec_list *ir, const varying_info_visitor *info) void do_dead_builtin_varyings(struct gl_context *ctx, - exec_list *producer, exec_list *consumer, + gl_shader *producer, gl_shader *consumer, unsigned num_tfeedback_decls, tfeedback_decl *tfeedback_decls) { @@ -431,44 +431,55 @@ do_dead_builtin_varyings(struct gl_context *ctx, varying_info_visitor consumer_info(ir_var_shader_in); if (producer) { - producer_info.get(producer, num_tfeedback_decls, tfeedback_decls); + producer_info.get(producer->ir, num_tfeedback_decls, tfeedback_decls); if (!consumer) { /* At least eliminate unused gl_TexCoord elements. */ if (producer_info.lower_texcoord_array) { - lower_texcoord_array(producer, &producer_info); + lower_texcoord_array(producer->ir, &producer_info); } return; } } if (consumer) { - consumer_info.get(consumer, 0, NULL); + consumer_info.get(consumer->ir, 0, NULL); if (!producer) { /* At least eliminate unused gl_TexCoord elements. */ if (consumer_info.lower_texcoord_array) { - lower_texcoord_array(consumer, &consumer_info); + lower_texcoord_array(consumer->ir, &consumer_info); } return; } } - /* Eliminate the varyings unused by the other shader. */ + /* Eliminate the outputs unused by the consumer. */ if (producer_info.lower_texcoord_array || producer_info.color_usage || producer_info.has_fog) { - replace_varyings_visitor(producer, + replace_varyings_visitor(producer->ir, &producer_info, consumer_info.texcoord_usage, consumer_info.color_usage, consumer_info.has_fog); } + /* The gl_TexCoord fragment shader inputs can be initialized + * by GL_COORD_REPLACE, so we can't eliminate them. + * + * This doesn't prevent elimination of the gl_TexCoord elements which + * are not read by the fragment shader. We want to eliminate those anyway. + */ + if (consumer->Type == GL_FRAGMENT_SHADER) { + producer_info.texcoord_usage = (1 << MAX_TEXTURE_COORD_UNITS) - 1; + } + + /* Eliminate the inputs uninitialized by the producer. */ if (consumer_info.lower_texcoord_array || consumer_info.color_usage || consumer_info.has_fog) { - replace_varyings_visitor(consumer, + replace_varyings_visitor(consumer->ir, &consumer_info, producer_info.texcoord_usage, producer_info.color_usage, diff --git a/mesalib/src/glsl/opt_dead_code_local.cpp b/mesalib/src/glsl/opt_dead_code_local.cpp index 8c31802a6..42a30b3d8 100644 --- a/mesalib/src/glsl/opt_dead_code_local.cpp +++ b/mesalib/src/glsl/opt_dead_code_local.cpp @@ -114,6 +114,23 @@ public: return visit_continue_with_parent; } + virtual ir_visitor_status visit(ir_emit_vertex *ir) + { + /* For the purpose of dead code elimination, emitting a vertex counts as + * "reading" all of the currently assigned output variables. + */ + foreach_iter(exec_list_iterator, iter, *this->assignments) { + assignment_entry *entry = (assignment_entry *)iter.get(); + if (entry->lhs->mode == ir_var_shader_out) { + if (debug) + printf("kill %s\n", entry->lhs->name); + entry->remove(); + } + } + + return visit_continue; + } + private: exec_list *assignments; }; |