svn merge ^/branches/released . --username marha

1 files changed, 185 insertions, 0 deletions

diff --git a/mesalib/src/mesa/math/m_vector.c b/mesalib/src/mesa/math/m_vector.c
new file mode 100644
index 000000000..4cbab11a3
--- /dev/null
+++ b/mesalib/src/mesa/math/m_vector.c
@@ -0,0 +1,185 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  3.5
+ *
+ * Copyright (C) 1999-2001  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.
+ */
+
+/*
+ * New (3.1) transformation code written by Keith Whitwell.
+ */
+
+
+#include "main/glheader.h"
+#include "main/imports.h"
+#include "main/macros.h"
+#include "main/imports.h"
+
+#include "m_vector.h"
+
+
+
+/**
+ * Given a vector [count][4] of floats, set all the [][elt] values
+ * to 0 (if elt = 0, 1, 2) or 1.0 (if elt = 3).
+ */
+void
+_mesa_vector4f_clean_elem( GLvector4f *vec, GLuint count, GLuint elt )
+{
+   static const GLubyte elem_bits[4] = {
+      VEC_DIRTY_0,
+      VEC_DIRTY_1,
+      VEC_DIRTY_2,
+      VEC_DIRTY_3
+   };
+   static const GLfloat clean[4] = { 0, 0, 0, 1 };
+   const GLfloat v = clean[elt];
+   GLfloat (*data)[4] = (GLfloat (*)[4])vec->start;
+   GLuint i;
+
+   for (i = 0; i < count; i++)
+      data[i][elt] = v;
+
+   vec->flags &= ~elem_bits[elt];
+}
+
+
+static const GLubyte size_bits[5] = {
+   0,
+   VEC_SIZE_1,
+   VEC_SIZE_2,
+   VEC_SIZE_3,
+   VEC_SIZE_4,
+};
+
+
+/**
+ * Initialize GLvector objects.
+ * \param v  the vector object to initialize.
+ * \param flags  bitwise-OR of VEC_* flags
+ * \param storage  pointer to storage for the vector's data
+ */
+void
+_mesa_vector4f_init( GLvector4f *v, GLbitfield flags, GLfloat (*storage)[4] )
+{
+   v->stride = 4 * sizeof(GLfloat);
+   v->size = 2;   /* may change: 2-4 for vertices and 1-4 for texcoords */
+   v->data = storage;
+   v->start = (GLfloat *) storage;
+   v->count = 0;
+   v->flags = size_bits[4] | flags;
+}
+
+
+/**
+ * Initialize GLvector objects and allocate storage.
+ * \param v  the vector object
+ * \param flags  bitwise-OR of VEC_* flags
+ * \param count  number of elements to allocate in vector
+ * \param alignment  desired memory alignment for the data (in bytes)
+ */
+void
+_mesa_vector4f_alloc( GLvector4f *v, GLbitfield flags, GLuint count,
+                      GLuint alignment )
+{
+   v->stride = 4 * sizeof(GLfloat);
+   v->size = 2;
+   v->storage = ALIGN_MALLOC( count * 4 * sizeof(GLfloat), alignment );
+   v->storage_count = count;
+   v->start = (GLfloat *) v->storage;
+   v->data = (GLfloat (*)[4]) v->storage;
+   v->count = 0;
+   v->flags = size_bits[4] | flags | VEC_MALLOC;
+}
+
+
+/**
+ * Vector deallocation.  Free whatever memory is pointed to by the
+ * vector's storage field if the VEC_MALLOC flag is set.
+ * DO NOT free the GLvector object itself, though.
+ */
+void
+_mesa_vector4f_free( GLvector4f *v )
+{
+   if (v->flags & VEC_MALLOC) {
+      ALIGN_FREE( v->storage );
+      v->data = NULL;
+      v->start = NULL;
+      v->storage = NULL;
+      v->flags &= ~VEC_MALLOC;
+   }
+}
+
+
+/**
+ * For debugging
+ */
+void
+_mesa_vector4f_print( const GLvector4f *v, const GLubyte *cullmask,
+                      GLboolean culling )
+{
+   static const GLfloat c[4] = { 0, 0, 0, 1 };
+   static const char *templates[5] = {
+      "%d:\t0, 0, 0, 1\n",
+      "%d:\t%f, 0, 0, 1\n",
+      "%d:\t%f, %f, 0, 1\n",
+      "%d:\t%f, %f, %f, 1\n",
+      "%d:\t%f, %f, %f, %f\n"
+   };
+
+   const char *t = templates[v->size];
+   GLfloat *d = (GLfloat *)v->data;
+   GLuint j, i = 0, count;
+
+   _mesa_printf("data-start\n");
+   for (; d != v->start; STRIDE_F(d, v->stride), i++)
+      _mesa_printf(t, i, d[0], d[1], d[2], d[3]);
+
+   _mesa_printf("start-count(%u)\n", v->count);
+   count = i + v->count;
+
+   if (culling) {
+      for (; i < count; STRIDE_F(d, v->stride), i++)
+	 if (cullmask[i])
+	    _mesa_printf(t, i, d[0], d[1], d[2], d[3]);
+   }
+   else {
+      for (; i < count; STRIDE_F(d, v->stride), i++)
+	 _mesa_printf(t, i, d[0], d[1], d[2], d[3]);
+   }
+
+   for (j = v->size; j < 4; j++) {
+      if ((v->flags & (1<<j)) == 0) {
+
+	 _mesa_printf("checking col %u is clean as advertised ", j);
+
+	 for (i = 0, d = (GLfloat *) v->data;
+	      i < count && d[j] == c[j];
+	      i++, STRIDE_F(d, v->stride)) {
+            /* no-op */
+         }
+
+	 if (i == count)
+	    _mesa_printf(" --> ok\n");
+	 else
+	    _mesa_printf(" --> Failed at %u ******\n", i);
+      }
+   }
+}