diff options
Diffstat (limited to 'src/mesa/shader/slang/slang_export.c')
| -rw-r--r-- | src/mesa/shader/slang/slang_export.c | 292 |
1 files changed, 292 insertions, 0 deletions
diff --git a/src/mesa/shader/slang/slang_export.c b/src/mesa/shader/slang/slang_export.c new file mode 100644 index 0000000000..324dee2a40 --- /dev/null +++ b/src/mesa/shader/slang/slang_export.c @@ -0,0 +1,292 @@ +/*
+ * Mesa 3-D graphics library
+ * Version: 6.5
+ *
+ * Copyright (C) 2006 Brian Paul All Rights Reserved.
+ *
+ * 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 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
+ * BRIAN PAUL 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.
+ */
+
+/**
+ * \file slang_export.c
+ * interface between assembly code and the application
+ * \author Michal Krol
+ */
+
+#include "imports.h"
+#include "slang_utility.h"
+#include "slang_export.h"
+
+/*
+ * slang_export_data_quant
+ */
+
+GLvoid slang_export_data_quant_ctr (slang_export_data_quant *self)
+{
+ self->name = SLANG_ATOM_NULL;
+ self->size = 0;
+ self->array_len = 0;
+ self->structure = NULL;
+ self->u.basic_type = GL_FLOAT;
+}
+
+GLvoid slang_export_data_quant_dtr (slang_export_data_quant *self)
+{
+ if (self->structure != NULL)
+ {
+ GLuint i;
+
+ for (i = 0; i < self->u.field_count; i++)
+ slang_export_data_quant_dtr (&self->structure[i]);
+ slang_alloc_free (self->structure);
+ }
+}
+
+slang_export_data_quant *slang_export_data_quant_add_field (slang_export_data_quant *self)
+{
+ const GLuint n = self->u.field_count;
+
+ self->structure = (slang_export_data_quant *) slang_alloc_realloc (self->structure,
+ n * sizeof (slang_export_data_quant), (n + 1) * sizeof (slang_export_data_quant));
+ if (self->structure == NULL)
+ return NULL;
+ slang_export_data_quant_ctr (&self->structure[n]);
+ self->u.field_count++;
+ return &self->structure[n];
+}
+
+/*
+ * slang_export_data_entry
+ */
+
+GLvoid slang_export_data_entry_ctr (slang_export_data_entry *self)
+{
+ slang_export_data_quant_ctr (&self->quant);
+ self->access = slang_exp_uniform;
+ self->address = ~0;
+}
+
+GLvoid slang_export_data_entry_dtr (slang_export_data_entry *self)
+{
+ slang_export_data_quant_dtr (&self->quant);
+}
+
+/*
+ * slang_export_data_table
+ */
+
+GLvoid slang_export_data_table_ctr (slang_export_data_table *self)
+{
+ self->entries = NULL;
+ self->count = 0;
+ self->atoms = NULL;
+}
+
+GLvoid slang_export_data_table_dtr (slang_export_data_table *self)
+{
+ if (self->entries != NULL)
+ {
+ GLuint i;
+
+ for (i = 0; i < self->count; i++)
+ slang_export_data_entry_dtr (&self->entries[i]);
+ slang_alloc_free (self->entries);
+ }
+}
+
+slang_export_data_entry *slang_export_data_table_add (slang_export_data_table *self)
+{
+ const GLuint n = self->count;
+
+ self->entries = (slang_export_data_entry *) slang_alloc_realloc (self->entries,
+ n * sizeof (slang_export_data_entry), (n + 1) * sizeof (slang_export_data_entry));
+ if (self->entries == NULL)
+ return NULL;
+ slang_export_data_entry_ctr (&self->entries[n]);
+ self->count++;
+ return &self->entries[n];
+}
+
+/*
+ * _slang_find_exported_data()
+ */
+
+#define EXTRACT_ERROR 0
+#define EXTRACT_BASIC 1
+#define EXTRACT_ARRAY 2
+#define EXTRACT_STRUCT 3
+#define EXTRACT_STRUCT_ARRAY 4
+
+#define EXTRACT_MAXLEN 255
+
+static GLuint extract_name (const char *name, char *parsed, GLuint *element, const char **end)
+{
+ GLuint i;
+
+ if (name[0] >= 'a' && name[0] <= 'z' || name[0] >= 'A' && name[0] <= 'Z' || name[0] == '_')
+ {
+ parsed[0] = name[0];
+
+ for (i = 1; i < EXTRACT_MAXLEN; i++)
+ {
+ if (name[i] >= 'a' && name[i] <= 'z' || name[i] >= 'A' && name[i] <= 'Z' ||
+ name[i] >= '0' && name[i] <= '9' || name[0] == '_')
+ {
+ parsed[i] = name[i];
+ }
+ else
+ {
+ if (name[i] == '\0')
+ {
+ parsed[i] = '\0';
+ return EXTRACT_BASIC;
+ }
+ if (name[i] == '.')
+ {
+ parsed[i] = '\0';
+ *end = &name[i + 1];
+ return EXTRACT_STRUCT;
+ }
+ if (name[i] == '[')
+ {
+ parsed[i] = '\0';
+ i++;
+ if (name[i] >= '0' && name[i] <= '9')
+ {
+ *element = name[i] - '0';
+ for (i++; ; i++)
+ {
+ if (name[i] >= '0' && name[i] <= '9')
+ *element = *element * 10 + (name[i] - '0');
+ else
+ {
+ if (name[i] == ']')
+ {
+ i++;
+ if (name[i] == '.')
+ {
+ *end = &name[i + 1];
+ return EXTRACT_STRUCT_ARRAY;
+ }
+ *end = &name[i];
+ return EXTRACT_ARRAY;
+ }
+ break;
+ }
+ }
+ }
+ }
+ break;
+ }
+ }
+ }
+ return EXTRACT_ERROR;
+}
+
+static GLboolean validate_extracted (slang_export_data_quant *q, GLuint element, GLuint extr)
+{
+ switch (extr)
+ {
+ case EXTRACT_BASIC:
+ return GL_TRUE;
+ case EXTRACT_ARRAY:
+ return element < q->array_len;
+ case EXTRACT_STRUCT:
+ return q->structure != NULL;
+ case EXTRACT_STRUCT_ARRAY:
+ return q->structure != NULL && element < q->array_len;
+ }
+ return GL_FALSE;
+}
+
+static GLuint calculate_offset (slang_export_data_quant *q, GLuint element)
+{
+ if (q->array_len != 0)
+ return element * q->size;
+ return 0;
+}
+
+static GLboolean find_exported_data (slang_export_data_quant *q, const char *name,
+ slang_export_data_quant **quant, GLuint *offset, slang_atom_pool *atoms)
+{
+ char parsed[EXTRACT_MAXLEN];
+ GLuint result, element, i;
+ const char *end;
+ slang_atom atom;
+
+ result = extract_name (name, parsed, &element, &end);
+ if (result == EXTRACT_ERROR)
+ return GL_FALSE;
+
+ atom = slang_atom_pool_atom (atoms, parsed);
+ if (atom == SLANG_ATOM_NULL)
+ return GL_FALSE;
+
+ for (i = 0; i < q->u.field_count; i++)
+ if (q->structure[i].name == atom)
+ {
+ if (!validate_extracted (&q->structure[i], element, result))
+ return GL_FALSE;
+ *offset += calculate_offset (&q->structure[i], element);
+ if (result == EXTRACT_BASIC || result == EXTRACT_ARRAY)
+ {
+ if (*end != '\0')
+ return GL_FALSE;
+ *quant = &q->structure[i];
+ return GL_TRUE;
+ }
+ return find_exported_data (&q->structure[i], end, quant, offset, atoms);
+ }
+ return GL_FALSE;
+}
+
+GLboolean _slang_find_exported_data (slang_export_data_table *table, const char *name,
+ slang_export_data_entry **entry, slang_export_data_quant **quant, GLuint *offset)
+{
+ char parsed[EXTRACT_MAXLEN];
+ GLuint result, element, i;
+ const char *end;
+ slang_atom atom;
+
+ result = extract_name (name, parsed, &element, &end);
+ if (result == EXTRACT_ERROR)
+ return GL_FALSE;
+
+ atom = slang_atom_pool_atom (table->atoms, parsed);
+ if (atom == SLANG_ATOM_NULL)
+ return GL_FALSE;
+
+ for (i = 0; i < table->count; i++)
+ if (table->entries[i].quant.name == atom)
+ {
+ if (!validate_extracted (&table->entries[i].quant, element, result))
+ return GL_FALSE;
+ *entry = &table->entries[i];
+ *offset = calculate_offset (&table->entries[i].quant, element);
+ if (result == EXTRACT_BASIC || result == EXTRACT_ARRAY)
+ {
+ if (*end != '\0')
+ return GL_FALSE;
+ *quant = &table->entries[i].quant;
+ return GL_TRUE;
+ }
+ return find_exported_data (&table->entries[i].quant, end, quant, offset, table->atoms);
+ }
+ return GL_FALSE;
+}
+
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