On 2015-05-14 07:06:05, Iago Toral Quiroga wrote:
> From: Kristian Høgsberg <k...@bitplanet.net>
>
> This will be used to identify buffer variables inside shader storage
> buffer objects, which are very similar to uniforms except for a few
> differences, most important of which is that they are writable.
>
> Since buffer variables are so similar to uniforms, we will almost always
> want them to go through the same paths as uniforms.
> ---
> src/glsl/builtin_variables.cpp | 5 +++--
> src/glsl/glsl_symbol_table.cpp | 16 +++++++++++-----
> src/glsl/ir.cpp | 3 +++
> src/glsl/ir.h | 4 +++-
> src/glsl/ir_function.cpp | 1 +
> src/glsl/ir_print_visitor.cpp | 3 ++-
> src/glsl/ir_reader.cpp | 2 ++
> src/glsl/loop_unroll.cpp | 1 +
> src/glsl/lower_named_interface_blocks.cpp | 5 +++--
> src/glsl/lower_variable_index_to_cond_assign.cpp | 1 +
> src/glsl/opt_structure_splitting.cpp | 5 +++--
> 11 files changed, 33 insertions(+), 13 deletions(-)
>
> diff --git a/src/glsl/builtin_variables.cpp b/src/glsl/builtin_variables.cpp
> index 6806aa1..a3ed79d 100644
> --- a/src/glsl/builtin_variables.cpp
> +++ b/src/glsl/builtin_variables.cpp
> @@ -436,11 +436,12 @@ builtin_variable_generator::add_variable(const char
> *name,
> var->data.read_only = true;
> break;
> case ir_var_shader_out:
> + case ir_var_buffer:
I think ir_var_shader_storage or ir_var_ssbo is better.
-Jordan
> break;
> default:
> /* The only variables that are added using this function should be
> - * uniforms, shader inputs, and shader outputs, constants (which use
> - * ir_var_auto), and system values.
> + * uniforms, buffers, shader inputs, and shader outputs, constants
> + * (which use ir_var_auto), and system values.
> */
> assert(0);
> break;
> diff --git a/src/glsl/glsl_symbol_table.cpp b/src/glsl/glsl_symbol_table.cpp
> index 2294dda..e557689 100644
> --- a/src/glsl/glsl_symbol_table.cpp
> +++ b/src/glsl/glsl_symbol_table.cpp
> @@ -36,6 +36,9 @@ public:
> case ir_var_uniform:
> dest = &ibu;
> break;
> + case ir_var_buffer:
> + dest = &ibb;
> + break;
> case ir_var_shader_in:
> dest = &ibi;
> break;
> @@ -60,6 +63,8 @@ public:
> switch (mode) {
> case ir_var_uniform:
> return ibu;
> + case ir_var_buffer:
> + return ibb;
> case ir_var_shader_in:
> return ibi;
> case ir_var_shader_out:
> @@ -71,24 +76,25 @@ public:
> }
>
> symbol_table_entry(ir_variable *v) :
> - v(v), f(0), t(0), ibu(0), ibi(0), ibo(0), a(0) {}
> + v(v), f(0), t(0), ibu(0), ibb(0), ibi(0), ibo(0), a(0) {}
> symbol_table_entry(ir_function *f) :
> - v(0), f(f), t(0), ibu(0), ibi(0), ibo(0), a(0) {}
> + v(0), f(f), t(0), ibu(0), ibb(0), ibi(0), ibo(0), a(0) {}
> symbol_table_entry(const glsl_type *t) :
> - v(0), f(0), t(t), ibu(0), ibi(0), ibo(0), a(0) {}
> + v(0), f(0), t(t), ibu(0), ibb(0), ibi(0), ibo(0), a(0) {}
> symbol_table_entry(const glsl_type *t, enum ir_variable_mode mode) :
> - v(0), f(0), t(0), ibu(0), ibi(0), ibo(0), a(0)
> + v(0), f(0), t(0), ibu(0), ibb(0), ibi(0), ibo(0), a(0)
> {
> assert(t->is_interface());
> add_interface(t, mode);
> }
> symbol_table_entry(const class ast_type_specifier *a):
> - v(0), f(0), t(0), ibu(0), ibi(0), ibo(0), a(a) {}
> + v(0), f(0), t(0), ibu(0), ibb(0), ibi(0), ibo(0), a(a) {}
>
> ir_variable *v;
> ir_function *f;
> const glsl_type *t;
> const glsl_type *ibu;
> + const glsl_type *ibb;
> const glsl_type *ibi;
> const glsl_type *ibo;
> const class ast_type_specifier *a;
> diff --git a/src/glsl/ir.cpp b/src/glsl/ir.cpp
> index 9e32385..b86a868 100644
> --- a/src/glsl/ir.cpp
> +++ b/src/glsl/ir.cpp
> @@ -1975,6 +1975,9 @@ mode_string(const ir_variable *var)
> case ir_var_uniform:
> return "uniform";
>
> + case ir_var_buffer:
> + return "buffer";
> +
> case ir_var_shader_in:
> return "shader input";
>
> diff --git a/src/glsl/ir.h b/src/glsl/ir.h
> index fab1cd2..88eb002 100644
> --- a/src/glsl/ir.h
> +++ b/src/glsl/ir.h
> @@ -323,6 +323,7 @@ protected:
> enum ir_variable_mode {
> ir_var_auto = 0, /**< Function local variables and globals. */
> ir_var_uniform, /**< Variable declared as a uniform. */
> + ir_var_buffer, /**< Variable declared as an ssbo. */
> ir_var_shader_in,
> ir_var_shader_out,
> ir_var_function_in,
> @@ -444,7 +445,8 @@ public:
> */
> inline bool is_in_uniform_block() const
> {
> - return this->data.mode == ir_var_uniform && this->interface_type !=
> NULL;
> + return (this->data.mode == ir_var_uniform ||
> + this->data.mode == ir_var_buffer) && this->interface_type !=
> NULL;
> }
>
> /**
> diff --git a/src/glsl/ir_function.cpp b/src/glsl/ir_function.cpp
> index 2b2643c..d6f2167 100644
> --- a/src/glsl/ir_function.cpp
> +++ b/src/glsl/ir_function.cpp
> @@ -72,6 +72,7 @@ parameter_lists_match(_mesa_glsl_parse_state *state,
> switch ((enum ir_variable_mode)(param->data.mode)) {
> case ir_var_auto:
> case ir_var_uniform:
> + case ir_var_buffer:
> case ir_var_temporary:
> /* These are all error conditions. It is invalid for a parameter to
> * a function to be declared as auto (not in, out, or inout) or
> diff --git a/src/glsl/ir_print_visitor.cpp b/src/glsl/ir_print_visitor.cpp
> index 01f52e8..ce411f2 100644
> --- a/src/glsl/ir_print_visitor.cpp
> +++ b/src/glsl/ir_print_visitor.cpp
> @@ -164,7 +164,8 @@ void ir_print_visitor::visit(ir_variable *ir)
> const char *const cent = (ir->data.centroid) ? "centroid " : "";
> const char *const samp = (ir->data.sample) ? "sample " : "";
> const char *const inv = (ir->data.invariant) ? "invariant " : "";
> - const char *const mode[] = { "", "uniform ", "shader_in ", "shader_out ",
> + const char *const mode[] = { "", "uniform ", "buffer",
> + "shader_in ", "shader_out ",
> "in ", "out ", "inout ",
> "const_in ", "sys ", "temporary " };
> STATIC_ASSERT(ARRAY_SIZE(mode) == ir_var_mode_count);
> diff --git a/src/glsl/ir_reader.cpp b/src/glsl/ir_reader.cpp
> index fd318c0..ff62130 100644
> --- a/src/glsl/ir_reader.cpp
> +++ b/src/glsl/ir_reader.cpp
> @@ -418,6 +418,8 @@ ir_reader::read_declaration(s_expression *expr)
> var->data.invariant = 1;
> } else if (strcmp(qualifier->value(), "uniform") == 0) {
> var->data.mode = ir_var_uniform;
> + } else if (strcmp(qualifier->value(), "buffer") == 0) {
> + var->data.mode = ir_var_buffer;
> } else if (strcmp(qualifier->value(), "auto") == 0) {
> var->data.mode = ir_var_auto;
> } else if (strcmp(qualifier->value(), "in") == 0) {
> diff --git a/src/glsl/loop_unroll.cpp b/src/glsl/loop_unroll.cpp
> index 635e1dd..de70deb 100644
> --- a/src/glsl/loop_unroll.cpp
> +++ b/src/glsl/loop_unroll.cpp
> @@ -133,6 +133,7 @@ public:
> unsupported_variable_indexing = true;
> break;
> case ir_var_uniform:
> + case ir_var_buffer:
> if (options->EmitNoIndirectUniform)
> unsupported_variable_indexing = true;
> break;
> diff --git a/src/glsl/lower_named_interface_blocks.cpp
> b/src/glsl/lower_named_interface_blocks.cpp
> index 7304c51..72b4f4a 100644
> --- a/src/glsl/lower_named_interface_blocks.cpp
> +++ b/src/glsl/lower_named_interface_blocks.cpp
> @@ -108,7 +108,8 @@
> flatten_named_interface_blocks_declarations::run(exec_list *instructions)
> * but, this will require changes to the other uniform block
> * support code.
> */
> - if (var->data.mode == ir_var_uniform)
> + if (var->data.mode == ir_var_uniform ||
> + var->data.mode == ir_var_buffer)
> continue;
>
> const glsl_type * iface_t = var->type;
> @@ -212,7 +213,7 @@
> flatten_named_interface_blocks_declarations::handle_rvalue(ir_rvalue **rvalue)
> * but, this will require changes to the other uniform block
> * support code.
> */
> - if (var->data.mode == ir_var_uniform)
> + if (var->data.mode == ir_var_uniform || var->data.mode == ir_var_buffer)
> return;
>
> if (var->get_interface_type() != NULL) {
> diff --git a/src/glsl/lower_variable_index_to_cond_assign.cpp
> b/src/glsl/lower_variable_index_to_cond_assign.cpp
> index d878cb0..80706a7 100644
> --- a/src/glsl/lower_variable_index_to_cond_assign.cpp
> +++ b/src/glsl/lower_variable_index_to_cond_assign.cpp
> @@ -370,6 +370,7 @@ public:
> case ir_var_temporary:
> return this->lower_temps;
> case ir_var_uniform:
> + case ir_var_buffer:
> return this->lower_uniforms;
> case ir_var_function_in:
> case ir_var_const_in:
> diff --git a/src/glsl/opt_structure_splitting.cpp
> b/src/glsl/opt_structure_splitting.cpp
> index 5e82fe9..f85ab50 100644
> --- a/src/glsl/opt_structure_splitting.cpp
> +++ b/src/glsl/opt_structure_splitting.cpp
> @@ -103,8 +103,9 @@
> ir_structure_reference_visitor::get_variable_entry(ir_variable *var)
> {
> assert(var);
>
> - if (!var->type->is_record() || var->data.mode == ir_var_uniform
> - || var->data.mode == ir_var_shader_in || var->data.mode ==
> ir_var_shader_out)
> + if (!var->type->is_record() ||
> + var->data.mode == ir_var_uniform || var->data.mode == ir_var_buffer ||
> + var->data.mode == ir_var_shader_in || var->data.mode ==
> ir_var_shader_out)
> return NULL;
>
> foreach_in_list(variable_entry, entry, &this->variable_list) {
> --
> 1.9.1
>
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