Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1

Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:

Imported nx-X11-3.1.0-1.tar.gz
into Git repository

1 files changed, 230 insertions, 0 deletions

diff --git a/nx-X11/extras/Mesa/src/mesa/math/m_xform.c b/nx-X11/extras/Mesa/src/mesa/math/m_xform.c
new file mode 100644
index 000000000..5366e3498
--- /dev/null
+++ b/nx-X11/extras/Mesa/src/mesa/math/m_xform.c
@@ -0,0 +1,230 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  5.1
+ *
+ * Copyright (C) 1999-2003  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.
+ */
+
+
+/*
+ * Matrix/vertex/vector transformation stuff
+ *
+ *
+ * NOTES:
+ * 1. 4x4 transformation matrices are stored in memory in column major order.
+ * 2. Points/vertices are to be thought of as column vectors.
+ * 3. Transformation of a point p by a matrix M is: p' = M * p
+ */
+
+#include "glheader.h"
+#include "macros.h"
+
+#include "m_eval.h"
+#include "m_matrix.h"
+#include "m_translate.h"
+#include "m_xform.h"
+#include "mathmod.h"
+
+
+#ifdef DEBUG
+#include "m_debug.h"
+#endif
+
+#ifdef USE_X86_ASM
+#include "x86/common_x86_asm.h"
+#endif
+
+#ifdef USE_X86_64_ASM
+#include "x86-64/x86-64.h"
+#endif
+
+#ifdef USE_SPARC_ASM
+#include "sparc/sparc.h"
+#endif
+
+#ifdef USE_PPC_ASM
+#include "ppc/common_ppc_features.h"
+#endif
+
+clip_func _mesa_clip_tab[5];
+clip_func _mesa_clip_np_tab[5];
+dotprod_func _mesa_dotprod_tab[5];
+vec_copy_func _mesa_copy_tab[0x10];
+normal_func _mesa_normal_tab[0xf];
+transform_func *_mesa_transform_tab[5];
+
+
+/* Raw data format used for:
+ *    - Object-to-eye transform prior to culling, although this too
+ *      could be culled under some circumstances.
+ *    - Eye-to-clip transform (via the function above).
+ *    - Cliptesting
+ *    - And everything else too, if culling happens to be disabled.
+ *
+ * GH: It's used for everything now, as clipping/culling is done
+ *     elsewhere (most often by the driver itself).
+ */
+#define TAG(x) x
+#define TAG2(x,y) x##y
+#define STRIDE_LOOP for ( i = 0 ; i < count ; i++, STRIDE_F(from, stride) )
+#define LOOP for ( i = 0 ; i < n ; i++ )
+#define ARGS
+#include "m_xform_tmp.h"
+#include "m_clip_tmp.h"
+#include "m_norm_tmp.h"
+#include "m_dotprod_tmp.h"
+#include "m_copy_tmp.h"
+#undef TAG
+#undef TAG2
+#undef LOOP
+#undef ARGS
+
+
+
+
+GLvector4f *_mesa_project_points( GLvector4f *proj_vec,
+				  const GLvector4f *clip_vec )
+{
+   const GLuint stride = clip_vec->stride;
+   const GLfloat *from = (GLfloat *)clip_vec->start;
+   const GLuint count = clip_vec->count;
+   GLfloat (*vProj)[4] = (GLfloat (*)[4])proj_vec->start;
+   GLuint i;
+
+   for (i = 0 ; i < count ; i++, STRIDE_F(from, stride))
+   {
+	 GLfloat oow = 1.0F / from[3];
+	 vProj[i][3] = oow;
+	 vProj[i][0] = from[0] * oow;
+	 vProj[i][1] = from[1] * oow;
+	 vProj[i][2] = from[2] * oow;
+   }
+
+   proj_vec->flags |= VEC_SIZE_4;
+   proj_vec->size = 3;
+   proj_vec->count = clip_vec->count;
+   return proj_vec;
+}
+
+
+
+
+
+
+/*
+ * Transform a 4-element row vector (1x4 matrix) by a 4x4 matrix.  This
+ * function is used for transforming clipping plane equations and spotlight
+ * directions.
+ * Mathematically,  u = v * m.
+ * Input:  v - input vector
+ *         m - transformation matrix
+ * Output:  u - transformed vector
+ */
+void _mesa_transform_vector( GLfloat u[4], const GLfloat v[4], const GLfloat m[16] )
+{
+   GLfloat v0=v[0], v1=v[1], v2=v[2], v3=v[3];
+#define M(row,col)  m[row + col*4]
+   u[0] = v0 * M(0,0) + v1 * M(1,0) + v2 * M(2,0) + v3 * M(3,0);
+   u[1] = v0 * M(0,1) + v1 * M(1,1) + v2 * M(2,1) + v3 * M(3,1);
+   u[2] = v0 * M(0,2) + v1 * M(1,2) + v2 * M(2,2) + v3 * M(3,2);
+   u[3] = v0 * M(0,3) + v1 * M(1,3) + v2 * M(2,3) + v3 * M(3,3);
+#undef M
+}
+
+
+/* Useful for one-off point transformations, as in clipping.
+ * Note that because the matrix isn't analysed we do too many
+ * multiplies, and that the result is always 4-clean.
+ */
+void _mesa_transform_point_sz( GLfloat Q[4], const GLfloat M[16],
+			    const GLfloat P[4], GLuint sz )
+{
+   if (Q == P)
+      return;
+
+   if (sz == 4)
+   {
+      Q[0] = M[0] * P[0] + M[4] * P[1] + M[8] *  P[2] + M[12] * P[3];
+      Q[1] = M[1] * P[0] + M[5] * P[1] + M[9] *  P[2] + M[13] * P[3];
+      Q[2] = M[2] * P[0] + M[6] * P[1] + M[10] * P[2] + M[14] * P[3];
+      Q[3] = M[3] * P[0] + M[7] * P[1] + M[11] * P[2] + M[15] * P[3];
+   }
+   else if (sz == 3)
+   {
+      Q[0] = M[0] * P[0] + M[4] * P[1] + M[8] *  P[2] + M[12];
+      Q[1] = M[1] * P[0] + M[5] * P[1] + M[9] *  P[2] + M[13];
+      Q[2] = M[2] * P[0] + M[6] * P[1] + M[10] * P[2] + M[14];
+      Q[3] = M[3] * P[0] + M[7] * P[1] + M[11] * P[2] + M[15];
+   }
+   else if (sz == 2)
+   {
+      Q[0] = M[0] * P[0] + M[4] * P[1] +                M[12];
+      Q[1] = M[1] * P[0] + M[5] * P[1] +                M[13];
+      Q[2] = M[2] * P[0] + M[6] * P[1] +                M[14];
+      Q[3] = M[3] * P[0] + M[7] * P[1] +                M[15];
+   }
+   else if (sz == 1)
+   {
+      Q[0] = M[0] * P[0] +                              M[12];
+      Q[1] = M[1] * P[0] +                              M[13];
+      Q[2] = M[2] * P[0] +                              M[14];
+      Q[3] = M[3] * P[0] +                              M[15];
+   }
+}
+
+
+/*
+ * This is called only once.  It initializes several tables with pointers
+ * to optimized transformation functions.  This is where we can test for
+ * AMD 3Dnow! capability, Intel SSE, etc. and hook in the right code.
+ */
+void
+_math_init_transformation( void )
+{
+   init_c_transformations();
+   init_c_norm_transform();
+   init_c_cliptest();
+   init_copy0();
+   init_dotprod();
+
+#ifdef DEBUG
+   _math_test_all_transform_functions( "default" );
+   _math_test_all_normal_transform_functions( "default" );
+   _math_test_all_cliptest_functions( "default" );
+#endif
+
+#ifdef USE_X86_ASM
+   _mesa_init_all_x86_transform_asm();
+#elif defined( USE_SPARC_ASM )
+   _mesa_init_all_sparc_transform_asm();
+#elif defined( USE_PPC_ASM )
+   _mesa_init_all_ppc_transform_asm();
+#elif defined( USE_X86_64_ASM )
+   _mesa_init_all_x86_64_transform_asm();
+#endif
+}
+
+void
+_math_init( void )
+{
+   _math_init_transformation();
+   _math_init_translate();
+   _math_init_eval();
+}