glsl/ast: Support double floats
[mesa.git] / src / glsl / glsl_parser_extras.cpp
index d7352a7d66d8c5320f65e4f31237fbb53373bc0e..29e6dd2ff7daa7dda684d11666e4d178321bdeec 100644 (file)
 #include <string.h>
 #include <assert.h>
 
-extern "C" {
 #include "main/core.h" /* for struct gl_context */
 #include "main/context.h"
 #include "main/shaderobj.h"
-}
-
-#include "ralloc.h"
+#include "util/u_atomic.h" /* for p_atomic_cmpxchg */
+#include "util/ralloc.h"
 #include "ast.h"
 #include "glsl_parser_extras.h"
 #include "glsl_parser.h"
@@ -49,8 +47,8 @@ glsl_compute_version_string(void *mem_ctx, bool is_es, unsigned version)
 }
 
 
-static unsigned known_desktop_glsl_versions[] =
-   { 110, 120, 130, 140, 150, 330, 400, 410, 420, 430, 440 };
+static const unsigned known_desktop_glsl_versions[] =
+   { 110, 120, 130, 140, 150, 330, 400, 410, 420, 430, 440, 450 };
 
 
 _mesa_glsl_parse_state::_mesa_glsl_parse_state(struct gl_context *_ctx,
@@ -134,6 +132,9 @@ _mesa_glsl_parse_state::_mesa_glsl_parse_state(struct gl_context *_ctx,
    this->Const.MaxFragmentImageUniforms = ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxImageUniforms;
    this->Const.MaxCombinedImageUniforms = ctx->Const.MaxCombinedImageUniforms;
 
+   /* ARB_viewport_array */
+   this->Const.MaxViewports = ctx->Const.MaxViewports;
+
    this->current_function = NULL;
    this->toplevel_ir = NULL;
    this->found_return = false;
@@ -141,6 +142,12 @@ _mesa_glsl_parse_state::_mesa_glsl_parse_state(struct gl_context *_ctx,
    this->user_structures = NULL;
    this->num_user_structures = 0;
 
+   /* supported_versions should be large enough to support the known desktop
+    * GLSL versions plus 2 GLES versions (ES2 & ES3)
+    */
+   STATIC_ASSERT((ARRAY_SIZE(known_desktop_glsl_versions) + 2) ==
+                 ARRAY_SIZE(this->supported_versions));
+
    /* Populate the list of supported GLSL versions */
    /* FINISHME: Once the OpenGL 3.0 'forward compatible' context or
     * the OpenGL 3.2 Core context is supported, this logic will need
@@ -168,8 +175,6 @@ _mesa_glsl_parse_state::_mesa_glsl_parse_state(struct gl_context *_ctx,
       this->supported_versions[this->num_supported_versions].es = true;
       this->num_supported_versions++;
    }
-   assert(this->num_supported_versions
-          <= ARRAY_SIZE(this->supported_versions));
 
    /* Create a string for use in error messages to tell the user which GLSL
     * versions are supported.
@@ -210,6 +215,8 @@ _mesa_glsl_parse_state::_mesa_glsl_parse_state(struct gl_context *_ctx,
    this->early_fragment_tests = false;
    memset(this->atomic_counter_offsets, 0,
           sizeof(this->atomic_counter_offsets));
+   this->allow_extension_directive_midshader =
+      ctx->Const.AllowGLSLExtensionDirectiveMidShader;
 }
 
 /**
@@ -512,16 +519,21 @@ static const _mesa_glsl_extension _mesa_glsl_supported_extensions[] = {
    EXT(ARB_arrays_of_arrays,           true,  false,     ARB_arrays_of_arrays),
    EXT(ARB_compute_shader,             true,  false,     ARB_compute_shader),
    EXT(ARB_conservative_depth,         true,  false,     ARB_conservative_depth),
+   EXT(ARB_derivative_control,         true,  false,     ARB_derivative_control),
    EXT(ARB_draw_buffers,               true,  false,     dummy_true),
    EXT(ARB_draw_instanced,             true,  false,     ARB_draw_instanced),
    EXT(ARB_explicit_attrib_location,   true,  false,     ARB_explicit_attrib_location),
+   EXT(ARB_explicit_uniform_location,  true,  false,     ARB_explicit_uniform_location),
    EXT(ARB_fragment_coord_conventions, true,  false,     ARB_fragment_coord_conventions),
+   EXT(ARB_fragment_layer_viewport,    true,  false,     ARB_fragment_layer_viewport),
    EXT(ARB_gpu_shader5,                true,  false,     ARB_gpu_shader5),
+   EXT(ARB_gpu_shader_fp64,            true,  false,     ARB_gpu_shader_fp64),
    EXT(ARB_sample_shading,             true,  false,     ARB_sample_shading),
    EXT(ARB_separate_shader_objects,    true,  false,     dummy_true),
    EXT(ARB_shader_atomic_counters,     true,  false,     ARB_shader_atomic_counters),
    EXT(ARB_shader_bit_encoding,        true,  false,     ARB_shader_bit_encoding),
    EXT(ARB_shader_image_load_store,    true,  false,     ARB_shader_image_load_store),
+   EXT(ARB_shader_precision,           true,  false,     ARB_shader_precision),
    EXT(ARB_shader_stencil_export,      true,  false,     ARB_shader_stencil_export),
    EXT(ARB_shader_texture_lod,         true,  false,     ARB_shader_texture_lod),
    EXT(ARB_shading_language_420pack,   true,  false,     ARB_shading_language_420pack),
@@ -550,6 +562,9 @@ static const _mesa_glsl_extension _mesa_glsl_supported_extensions[] = {
    EXT(AMD_shader_stencil_export,      true,  false,     ARB_shader_stencil_export),
    EXT(AMD_shader_trinary_minmax,      true,  false,     dummy_true),
    EXT(AMD_vertex_shader_layer,        true,  false,     AMD_vertex_shader_layer),
+   EXT(AMD_vertex_shader_viewport_index, true,  false,   AMD_vertex_shader_viewport_index),
+   EXT(EXT_draw_buffers,               false,  true,     dummy_true),
+   EXT(EXT_separate_shader_objects,    false, true,      dummy_true),
    EXT(EXT_shader_integer_mix,         true,  true,      EXT_shader_integer_mix),
    EXT(EXT_texture_array,              true,  false,     EXT_texture_array),
 };
@@ -655,7 +670,7 @@ _mesa_glsl_process_extension(const char *name, YYLTYPE *name_locp,
       if (extension && extension->compatible_with_state(state)) {
          extension->set_flags(state, behavior);
       } else {
-         static const char *const fmt = "extension `%s' unsupported in %s shader";
+         static const char fmt[] = "extension `%s' unsupported in %s shader";
 
          if (behavior == extension_require) {
             _mesa_glsl_error(name_locp, state, fmt,
@@ -841,8 +856,7 @@ ast_compound_statement::print(void) const
 {
    printf("{\n");
    
-   foreach_list_const(n, &this->statements) {
-      ast_node *ast = exec_node_data(ast_node, n, link);
+   foreach_list_typed(ast_node, ast, link, &this->statements) {
       ast->print();
    }
 
@@ -921,11 +935,10 @@ ast_expression::print(void) const
       subexpressions[0]->print();
       printf("( ");
 
-      foreach_list_const (n, &this->expressions) {
-        if (n != this->expressions.get_head())
+      foreach_list_typed (ast_node, ast, link, &this->expressions) {
+        if (&ast->link != this->expressions.get_head())
            printf(", ");
 
-        ast_node *ast = exec_node_data(ast_node, n, link);
         ast->print();
       }
 
@@ -949,6 +962,10 @@ ast_expression::print(void) const
       printf("%f ", primary_expression.float_constant);
       break;
 
+   case ast_double_constant:
+      printf("%f ", primary_expression.double_constant);
+      break;
+
    case ast_bool_constant:
       printf("%s ",
             primary_expression.bool_constant
@@ -957,11 +974,10 @@ ast_expression::print(void) const
 
    case ast_sequence: {
       printf("( ");
-      foreach_list_const(n, & this->expressions) {
-        if (n != this->expressions.get_head())
+      foreach_list_typed (ast_node, ast, link, & this->expressions) {
+        if (&ast->link != this->expressions.get_head())
            printf(", ");
 
-        ast_node *ast = exec_node_data(ast_node, n, link);
         ast->print();
       }
       printf(") ");
@@ -970,11 +986,10 @@ ast_expression::print(void) const
 
    case ast_aggregate: {
       printf("{ ");
-      foreach_list_const(n, & this->expressions) {
-        if (n != this->expressions.get_head())
+      foreach_list_typed (ast_node, ast, link, & this->expressions) {
+        if (&ast->link != this->expressions.get_head())
            printf(", ");
 
-        ast_node *ast = exec_node_data(ast_node, n, link);
         ast->print();
       }
       printf("} ");
@@ -1024,8 +1039,7 @@ ast_function::print(void) const
    return_type->print();
    printf(" %s (", identifier);
 
-   foreach_list_const(n, & this->parameters) {
-      ast_node *ast = exec_node_data(ast_node, n, link);
+   foreach_list_typed(ast_node, ast, link, & this->parameters) {
       ast->print();
    }
 
@@ -1097,14 +1111,15 @@ ast_declarator_list::print(void) const
 
    if (type)
       type->print();
-   else
+   else if (invariant)
       printf("invariant ");
+   else
+      printf("precise ");
 
-   foreach_list_const (ptr, & this->declarations) {
-      if (ptr != this->declarations.get_head())
+   foreach_list_typed (ast_node, ast, link, & this->declarations) {
+      if (&ast->link != this->declarations.get_head())
         printf(", ");
 
-      ast_node *ast = exec_node_data(ast_node, ptr, link);
       ast->print();
    }
 
@@ -1116,6 +1131,7 @@ ast_declarator_list::ast_declarator_list(ast_fully_specified_type *type)
 {
    this->type = type;
    this->invariant = false;
+   this->precise = false;
 }
 
 void
@@ -1235,8 +1251,7 @@ ast_case_label::ast_case_label(ast_expression *test_value)
 
 void ast_case_label_list::print(void) const
 {
-   foreach_list_const(n, & this->labels) {
-      ast_node *ast = exec_node_data(ast_node, n, link);
+   foreach_list_typed(ast_node, ast, link, & this->labels) {
       ast->print();
    }
    printf("\n");
@@ -1251,8 +1266,7 @@ ast_case_label_list::ast_case_label_list(void)
 void ast_case_statement::print(void) const
 {
    labels->print();
-   foreach_list_const(n, & this->stmts) {
-      ast_node *ast = exec_node_data(ast_node, n, link);
+   foreach_list_typed(ast_node, ast, link, & this->stmts) {
       ast->print();
       printf("\n");
    }
@@ -1267,8 +1281,7 @@ ast_case_statement::ast_case_statement(ast_case_label_list *labels)
 
 void ast_case_statement_list::print(void) const
 {
-   foreach_list_const(n, & this->cases) {
-      ast_node *ast = exec_node_data(ast_node, n, link);
+   foreach_list_typed(ast_node, ast, link, & this->cases) {
       ast->print();
    }
 }
@@ -1338,8 +1351,7 @@ void
 ast_struct_specifier::print(void) const
 {
    printf("struct %s { ", name);
-   foreach_list_const(n, &this->declarations) {
-      ast_node *ast = exec_node_data(ast_node, n, link);
+   foreach_list_typed(ast_node, ast, link, &this->declarations) {
       ast->print();
    }
    printf("} ");
@@ -1350,9 +1362,15 @@ ast_struct_specifier::ast_struct_specifier(const char *identifier,
                                           ast_declarator_list *declarator_list)
 {
    if (identifier == NULL) {
+      static mtx_t mutex = _MTX_INITIALIZER_NP;
       static unsigned anon_count = 1;
-      identifier = ralloc_asprintf(this, "#anon_struct_%04x", anon_count);
-      anon_count++;
+      unsigned count;
+
+      mtx_lock(&mutex);
+      count = anon_count++;
+      mtx_unlock(&mutex);
+
+      identifier = ralloc_asprintf(this, "#anon_struct_%04x", count);
    }
    name = identifier;
    this->declarations.push_degenerate_list_at_head(&declarator_list->link);
@@ -1440,6 +1458,10 @@ _mesa_glsl_compile_shader(struct gl_context *ctx, struct gl_shader *shader,
       new(shader) _mesa_glsl_parse_state(ctx, shader->Stage, shader);
    const char *source = shader->Source;
 
+   if (ctx->Const.GenerateTemporaryNames)
+      (void) p_atomic_cmpxchg(&ir_variable::temporaries_allocate_names,
+                              false, true);
+
    state->error = glcpp_preprocess(state, &source, &state->info_log,
                              &ctx->Extensions, ctx);
 
@@ -1450,8 +1472,7 @@ _mesa_glsl_compile_shader(struct gl_context *ctx, struct gl_shader *shader,
    }
 
    if (dump_ast) {
-      foreach_list_const(n, &state->translation_unit) {
-         ast_node *ast = exec_node_data(ast_node, n, link);
+      foreach_list_typed(ast_node, ast, link, &state->translation_unit) {
          ast->print();
       }
       printf("\n\n");
@@ -1474,7 +1495,7 @@ _mesa_glsl_compile_shader(struct gl_context *ctx, struct gl_shader *shader,
 
    if (!state->error && !shader->ir->is_empty()) {
       struct gl_shader_compiler_options *options =
-         &ctx->ShaderCompilerOptions[shader->Stage];
+         &ctx->Const.ShaderCompilerOptions[shader->Stage];
 
       /* Do some optimization at compile time to reduce shader IR size
        * and reduce later work if the same shader is linked multiple times
@@ -1484,12 +1505,32 @@ _mesa_glsl_compile_shader(struct gl_context *ctx, struct gl_shader *shader,
          ;
 
       validate_ir_tree(shader->ir);
+
+      enum ir_variable_mode other;
+      switch (shader->Stage) {
+      case MESA_SHADER_VERTEX:
+         other = ir_var_shader_in;
+         break;
+      case MESA_SHADER_FRAGMENT:
+         other = ir_var_shader_out;
+         break;
+      default:
+         /* Something invalid to ensure optimize_dead_builtin_uniforms
+          * doesn't remove anything other than uniforms or constants.
+          */
+         other = ir_var_mode_count;
+         break;
+      }
+
+      optimize_dead_builtin_variables(shader->ir, other);
+
+      validate_ir_tree(shader->ir);
    }
 
    if (shader->InfoLog)
       ralloc_free(shader->InfoLog);
 
-   shader->symbols = state->symbols;
+   shader->symbols = new(shader->ir) glsl_symbol_table;
    shader->CompileStatus = !state->error;
    shader->InfoLog = state->info_log;
    shader->Version = state->language_version;
@@ -1502,6 +1543,34 @@ _mesa_glsl_compile_shader(struct gl_context *ctx, struct gl_shader *shader,
    /* Retain any live IR, but trash the rest. */
    reparent_ir(shader->ir, shader->ir);
 
+   /* Destroy the symbol table.  Create a new symbol table that contains only
+    * the variables and functions that still exist in the IR.  The symbol
+    * table will be used later during linking.
+    *
+    * There must NOT be any freed objects still referenced by the symbol
+    * table.  That could cause the linker to dereference freed memory.
+    *
+    * We don't have to worry about types or interface-types here because those
+    * are fly-weights that are looked up by glsl_type.
+    */
+   foreach_in_list (ir_instruction, ir, shader->ir) {
+      switch (ir->ir_type) {
+      case ir_type_function:
+         shader->symbols->add_function((ir_function *) ir);
+         break;
+      case ir_type_variable: {
+         ir_variable *const var = (ir_variable *) ir;
+
+         if (var->data.mode != ir_var_temporary)
+            shader->symbols->add_variable(var);
+         break;
+      }
+      default:
+         break;
+      }
+   }
+
+   delete state->symbols;
    ralloc_free(state);
 }
 
@@ -1563,8 +1632,10 @@ do_common_optimization(exec_list *ir, bool linked,
    else
       progress = do_constant_variable_unlinked(ir) || progress;
    progress = do_constant_folding(ir) || progress;
+   progress = do_minmax_prune(ir) || progress;
    progress = do_cse(ir) || progress;
-   progress = do_algebraic(ir, native_integers) || progress;
+   progress = do_rebalance_tree(ir) || progress;
+   progress = do_algebraic(ir, native_integers, options) || progress;
    progress = do_lower_jumps(ir) || progress;
    progress = do_vec_index_to_swizzle(ir) || progress;
    progress = lower_vector_insert(ir, false) || progress;