glsl_SOURCES = symbol_table.c hash_table.c glsl_types.cpp \
glsl_parser.ypp glsl_lexer.lpp glsl_parser_extras.cpp \
ast_expr.cpp ast_to_hir.cpp ir.cpp hir_field_selection.cpp \
- ir_print_visitor.cpp
+ ir_print_visitor.cpp ir_variable.cpp
BUILT_SOURCES = glsl_parser.h builtin_types.h
{
struct simple_node *ptr;
+ _mesa_glsl_initialize_variables(instructions, state);
+
foreach (ptr, & state->translation_unit) {
((ast_node *)ptr)->hir(instructions, state);
}
--- /dev/null
+/*
+ * Copyright © 2010 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+struct builtin_variable {
+ enum ir_variable_mode mode;
+ const char *type;
+ const char *name;
+};
+
+static const builtin_variable builtin_core_vs_variables[] = {
+ { ir_var_out, "vec4", "gl_Position" },
+ { ir_var_out, "float", "gl_PointSize" },
+};
+
+static const builtin_variable builtin_110_deprecated_vs_variables[] = {
+ { ir_var_in, "vec4", "gl_Vertex" },
+ { ir_var_in, "vec4", "gl_Normal" },
+ { ir_var_in, "vec4", "gl_Color" },
+ { ir_var_in, "vec4", "gl_SecondaryColor" },
+ { ir_var_in, "vec4", "gl_MultiTexCoord0" },
+ { ir_var_in, "vec4", "gl_MultiTexCoord1" },
+ { ir_var_in, "vec4", "gl_MultiTexCoord2" },
+ { ir_var_in, "vec4", "gl_MultiTexCoord3" },
+ { ir_var_in, "vec4", "gl_MultiTexCoord4" },
+ { ir_var_in, "vec4", "gl_MultiTexCoord5" },
+ { ir_var_in, "vec4", "gl_MultiTexCoord6" },
+ { ir_var_in, "vec4", "gl_MultiTexCoord7" },
+ { ir_var_in, "float", "gl_FogCoord" },
+ { ir_var_out, "vec4", "gl_ClipVertex" },
+ { ir_var_out, "vec4", "gl_FrontColor" },
+ { ir_var_out, "vec4", "gl_BackColor" },
+ { ir_var_out, "vec4", "gl_FrontSecondaryColor" },
+ { ir_var_out, "vec4", "gl_BackSecondaryColor" },
+ { ir_var_out, "vec4", "gl_FogFragCoord" },
+};
+
+static const builtin_variable builtin_130_vs_variables[] = {
+ { ir_var_in, "int", "gl_VertexID" },
+};
} value;
};
+
+extern void
+_mesa_glsl_initialize_variables(exec_list *instructions,
+ struct _mesa_glsl_parse_state *state);
--- /dev/null
+/*
+ * Copyright © 2010 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include "glsl_parser_extras.h"
+#include "symbol_table.h"
+#include "ir.h"
+#include "builtin_variables.h"
+
+#ifndef Elements
+#define Elements(x) (sizeof(x)/sizeof(*(x)))
+#endif
+
+static void
+add_builtin_variable(const builtin_variable *proto, exec_list *instructions,
+ struct _mesa_symbol_table *symtab)
+{
+ /* Create a new variable declaration from the description supplied by
+ * the caller.
+ */
+ const glsl_type *const type = (glsl_type *)
+ _mesa_symbol_table_find_symbol(symtab, 0, proto->type);
+
+ assert(type != NULL);
+
+ ir_variable *var = new ir_variable(type, proto->name);
+
+ var->mode = proto->mode;
+ if (var->mode != ir_var_out)
+ var->read_only = true;
+
+
+ /* Once the variable is created an initialized, add it to the symbol table
+ * and add the declaration to the IR stream.
+ */
+ instructions->push_tail(var);
+
+ _mesa_symbol_table_add_symbol(symtab, 0, var->name, var);
+}
+
+
+static void
+generate_110_vs_variables(exec_list *instructions,
+ struct _mesa_symbol_table *symtab)
+{
+ for (unsigned i = 0; i < Elements(builtin_core_vs_variables); i++) {
+ add_builtin_variable(& builtin_core_vs_variables[i],
+ instructions, symtab);
+ }
+
+ for (unsigned i = 0
+ ; i < Elements(builtin_110_deprecated_vs_variables)
+ ; i++) {
+ add_builtin_variable(& builtin_110_deprecated_vs_variables[i],
+ instructions, symtab);
+ }
+
+ /* FINISHME: Add support fo gl_TexCoord. The size of this array is
+ * FINISHME: implementation dependent based on the value of
+ * FINISHME: GL_MAX_TEXTURE_COORDS.
+ */
+}
+
+
+static void
+generate_120_vs_variables(exec_list *instructions,
+ struct _mesa_symbol_table *symtab)
+{
+ /* GLSL version 1.20 did not add any built-in variables in the vertex
+ * shader.
+ */
+ generate_110_vs_variables(instructions, symtab);
+}
+
+
+static void
+generate_130_vs_variables(exec_list *instructions,
+ struct _mesa_symbol_table *symtab)
+{
+ generate_120_vs_variables(instructions, symtab);
+
+ for (unsigned i = 0; i < Elements(builtin_130_vs_variables); i++) {
+ add_builtin_variable(& builtin_130_vs_variables[i],
+ instructions, symtab);
+ }
+
+ /* FINISHME: Add support fo gl_ClipDistance. The size of this array is
+ * FINISHME: implementation dependent based on the value of
+ * FINISHME: GL_MAX_CLIP_DISTANCES.
+ */
+}
+
+
+static void
+initialize_vs_variables(exec_list *instructions,
+ struct _mesa_glsl_parse_state *state)
+{
+
+ switch (state->language_version) {
+ case 110:
+ generate_110_vs_variables(instructions, state->symbols);
+ break;
+ case 120:
+ generate_120_vs_variables(instructions, state->symbols);
+ break;
+ case 130:
+ generate_130_vs_variables(instructions, state->symbols);
+ break;
+ }
+}
+
+
+void
+_mesa_glsl_initialize_variables(exec_list *instructions,
+ struct _mesa_glsl_parse_state *state)
+{
+ switch (state->target) {
+ case vertex_shader:
+ initialize_vs_variables(instructions, state);
+ break;
+ case geometry_shader:
+ case fragment_shader:
+ break;
+ }
+}
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