From a7e6ec68985dda9ca70c3eeb4fa9d807b67f7c99 Mon Sep 17 00:00:00 2001 From: Samuel Iglesias Gonsalvez Date: Tue, 10 Jun 2014 08:45:43 +0200 Subject: [PATCH] glsl: Add parsing support for multi-stream output in geometry shaders. This implements parsing requirements for multi-stream support in geometry shaders as defined in ARB_gpu_shader5. Signed-off-by: Samuel Iglesias Gonsalvez Reviewed-by: Ian Romanick --- src/glsl/ast.h | 5 ++++ src/glsl/ast_to_hir.cpp | 19 +++++++++++++ src/glsl/ast_type.cpp | 39 +++++++++++++++++++++++++- src/glsl/glsl_parser.yy | 53 +++++++++++++++++++++++++++++++++++ src/glsl/glsl_parser_extras.h | 18 ++++++++++++ src/glsl/glsl_types.h | 6 ++++ src/glsl/ir.h | 5 ++++ 7 files changed, 144 insertions(+), 1 deletion(-) diff --git a/src/glsl/ast.h b/src/glsl/ast.h index 56e7bd86f91..15bf086a18e 100644 --- a/src/glsl/ast.h +++ b/src/glsl/ast.h @@ -509,6 +509,8 @@ struct ast_type_qualifier { /** \name Layout qualifiers for GL_ARB_gpu_shader5 */ /** \{ */ unsigned invocations:1; + unsigned stream:1; /**< Has stream value assigned */ + unsigned explicit_stream:1; /**< stream value assigned explicitly by shader code */ /** \} */ } /** \brief Set of flags, accessed by name. */ @@ -542,6 +544,9 @@ struct ast_type_qualifier { /** Maximum output vertices in GLSL 1.50 geometry shaders. */ int max_vertices; + /** Stream in GLSL 1.50 geometry shaders. */ + unsigned stream; + /** Input or output primitive type in GLSL 1.50 geometry shaders */ GLenum prim_type; diff --git a/src/glsl/ast_to_hir.cpp b/src/glsl/ast_to_hir.cpp index 7ba04a808c2..042ef243b64 100644 --- a/src/glsl/ast_to_hir.cpp +++ b/src/glsl/ast_to_hir.cpp @@ -2461,6 +2461,11 @@ apply_type_qualifier_to_variable(const struct ast_type_qualifier *qual, if (qual->flags.q.sample) var->data.sample = 1; + if (state->stage == MESA_SHADER_GEOMETRY && + qual->flags.q.out && qual->flags.q.stream) { + var->data.stream = qual->stream; + } + if (qual->flags.q.attribute && state->stage != MESA_SHADER_VERTEX) { var->type = glsl_type::error_type; _mesa_glsl_error(loc, state, @@ -5100,6 +5105,9 @@ ast_process_structure_or_interface_block(exec_list *instructions, fields[i].centroid = qual->flags.q.centroid ? 1 : 0; fields[i].sample = qual->flags.q.sample ? 1 : 0; + /* Only save explicitly defined streams in block's field */ + fields[i].stream = qual->flags.q.explicit_stream ? qual->stream : -1; + if (qual->flags.q.row_major || qual->flags.q.column_major) { if (!qual->flags.q.uniform) { _mesa_glsl_error(&loc, state, @@ -5548,6 +5556,17 @@ ast_interface_block::hir(exec_list *instructions, var->data.sample = fields[i].sample; var->init_interface_type(block_type); + if (fields[i].stream != -1 && + ((unsigned)fields[i].stream) != this->layout.stream) { + _mesa_glsl_error(&loc, state, + "stream layout qualifier on " + "interface block member `%s' does not match " + "the interface block (%d vs %d)", + var->name, fields[i].stream, this->layout.stream); + } + + var->data.stream = this->layout.stream; + if (redeclaring_per_vertex) { ir_variable *earlier = get_variable_being_redeclared(var, loc, state, diff --git a/src/glsl/ast_type.cpp b/src/glsl/ast_type.cpp index 77053d5b12e..017f23d0e38 100644 --- a/src/glsl/ast_type.cpp +++ b/src/glsl/ast_type.cpp @@ -125,9 +125,13 @@ ast_type_qualifier::merge_qualifier(YYLTYPE *loc, /* Uniform block layout qualifiers get to overwrite each * other (rightmost having priority), while all other * qualifiers currently don't allow duplicates. + * + * Geometry shaders can have several layout qualifiers + * assigning different stream values. */ - if ((this->flags.i & q.flags.i & ~(ubo_mat_mask.flags.i | + if ((state->stage != MESA_SHADER_GEOMETRY) && + (this->flags.i & q.flags.i & ~(ubo_mat_mask.flags.i | ubo_layout_mask.flags.i | ubo_binding_mask.flags.i)) != 0) { _mesa_glsl_error(loc, state, @@ -154,6 +158,39 @@ ast_type_qualifier::merge_qualifier(YYLTYPE *loc, this->max_vertices = q.max_vertices; } + if (state->stage == MESA_SHADER_GEOMETRY && + state->has_explicit_attrib_stream()) { + if (q.flags.q.stream && q.stream >= state->ctx->Const.MaxVertexStreams) { + _mesa_glsl_error(loc, state, + "`stream' value is larger than MAX_VERTEX_STREAMS - 1 " + "(%d > %d)", + q.stream, state->ctx->Const.MaxVertexStreams - 1); + } + if (this->flags.q.explicit_stream && + this->stream >= state->ctx->Const.MaxVertexStreams) { + _mesa_glsl_error(loc, state, + "`stream' value is larger than MAX_VERTEX_STREAMS - 1 " + "(%d > %d)", + this->stream, state->ctx->Const.MaxVertexStreams - 1); + } + + if (!this->flags.q.explicit_stream) { + if (q.flags.q.stream) { + this->flags.q.stream = 1; + this->stream = q.stream; + } else if (!this->flags.q.stream && this->flags.q.out) { + /* Assign default global stream value */ + this->flags.q.stream = 1; + this->stream = state->out_qualifier->stream; + } + } else { + if (q.flags.q.explicit_stream) { + _mesa_glsl_error(loc, state, + "duplicate layout `stream' qualifier"); + } + } + } + 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/src/glsl/glsl_parser.yy b/src/glsl/glsl_parser.yy index 2409959015d..b9897498ff7 100644 --- a/src/glsl/glsl_parser.yy +++ b/src/glsl/glsl_parser.yy @@ -1395,6 +1395,22 @@ layout_qualifier_id: } } + if (state->stage == MESA_SHADER_GEOMETRY) { + if (match_layout_qualifier("stream", $1, state) == 0 && + state->check_explicit_attrib_stream_allowed(& @3)) { + $$.flags.q.stream = 1; + + if ($3 < 0) { + _mesa_glsl_error(& @3, state, + "invalid stream %d specified", $3); + YYERROR; + } else { + $$.flags.q.explicit_stream = 1; + $$.stream = $3; + } + } + } + static const char * const local_size_qualifiers[3] = { "local_size_x", "local_size_y", @@ -1693,6 +1709,20 @@ storage_qualifier: { memset(& $$, 0, sizeof($$)); $$.flags.q.out = 1; + + if (state->stage == MESA_SHADER_GEOMETRY && + state->has_explicit_attrib_stream()) { + /* Section 4.3.8.2 (Output Layout Qualifiers) of the GLSL 4.00 + * spec says: + * + * "If the block or variable is declared with the stream + * identifier, it is associated with the specified stream; + * otherwise, it is associated with the current default stream." + */ + $$.flags.q.stream = 1; + $$.flags.q.explicit_stream = 0; + $$.stream = state->out_qualifier->stream; + } } | UNIFORM { @@ -2361,6 +2391,18 @@ interface_block: if (!block->layout.merge_qualifier(& @1, state, $1)) { YYERROR; } + + foreach_list_typed (ast_declarator_list, member, link, &block->declarations) { + ast_type_qualifier& qualifier = member->type->qualifier; + if (qualifier.flags.q.stream && qualifier.stream != block->layout.stream) { + _mesa_glsl_error(& @1, state, + "stream layout qualifier on " + "interface block member does not match " + "the interface block (%d vs %d)", + qualifier.stream, block->layout.stream); + YYERROR; + } + } $$ = block; } ; @@ -2434,6 +2476,14 @@ basic_interface_block: block->layout.flags.i |= block_interface_qualifier; + if (state->stage == MESA_SHADER_GEOMETRY && + state->has_explicit_attrib_stream()) { + /* Assign global layout's stream value. */ + block->layout.flags.q.stream = 1; + block->layout.flags.q.explicit_stream = 0; + block->layout.stream = state->out_qualifier->stream; + } + foreach_list_typed (ast_declarator_list, member, link, &block->declarations) { ast_type_qualifier& qualifier = member->type->qualifier; if ((qualifier.flags.i & interface_type_mask) == 0) { @@ -2576,6 +2626,9 @@ layout_defaults: } if (!state->out_qualifier->merge_qualifier(& @1, state, $1)) YYERROR; + + /* Allow future assigments of global out's stream id value */ + state->out_qualifier->flags.q.explicit_stream = 0; } $$ = NULL; } diff --git a/src/glsl/glsl_parser_extras.h b/src/glsl/glsl_parser_extras.h index aa4a114e414..a0af965fd23 100644 --- a/src/glsl/glsl_parser_extras.h +++ b/src/glsl/glsl_parser_extras.h @@ -119,6 +119,19 @@ struct _mesa_glsl_parse_state { return check_version(130, 300, locp, "bit-wise operations are forbidden"); } + bool check_explicit_attrib_stream_allowed(YYLTYPE *locp) + { + if (!this->has_explicit_attrib_stream()) { + const char *const requirement = "GL_ARB_gpu_shader5 extension or GLSL 400"; + + _mesa_glsl_error(locp, this, "explicit stream requires %s", + requirement); + return false; + } + + return true; + } + bool check_explicit_attrib_location_allowed(YYLTYPE *locp, const ir_variable *var) { @@ -166,6 +179,11 @@ struct _mesa_glsl_parse_state { return true; } + bool has_explicit_attrib_stream() const + { + return ARB_gpu_shader5_enable || is_version(400, 0); + } + bool has_explicit_attrib_location() const { return ARB_explicit_attrib_location_enable || is_version(330, 300); diff --git a/src/glsl/glsl_types.h b/src/glsl/glsl_types.h index f6d4a02ab68..0b63d4850e1 100644 --- a/src/glsl/glsl_types.h +++ b/src/glsl/glsl_types.h @@ -671,6 +671,12 @@ struct glsl_struct_field { * in ir_variable::sample). 0 otherwise. */ unsigned sample:1; + + /** + * For interface blocks, it has a value if this variable uses multiple vertex + * streams (as in ir_variable::stream). -1 otherwise. + */ + int stream; }; static inline unsigned int diff --git a/src/glsl/ir.h b/src/glsl/ir.h index b4e52d3d0a5..2e422ddac4a 100644 --- a/src/glsl/ir.h +++ b/src/glsl/ir.h @@ -705,6 +705,11 @@ public: */ int location; + /** + * Vertex stream output identifier. + */ + unsigned stream; + /** * output index for dual source blending. */ -- 2.30.2