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, 1001 insertions, 0 deletions

diff --git a/nx-X11/extras/Mesa/src/mesa/main/rastpos.c b/nx-X11/extras/Mesa/src/mesa/main/rastpos.c
new file mode 100644
index 000000000..507eb9f98
--- /dev/null
+++ b/nx-X11/extras/Mesa/src/mesa/main/rastpos.c
@@ -0,0 +1,1001 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.3
+ *
+ * Copyright (C) 1999-2004  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 rastpos.c
+ * Raster position operations.
+ */
+
+#include "glheader.h"
+#include "colormac.h"
+#include "context.h"
+#include "feedback.h"
+#include "light.h"
+#include "macros.h"
+#include "rastpos.h"
+#include "state.h"
+#include "simple_list.h"
+#include "mtypes.h"
+
+#include "math/m_matrix.h"
+
+
+/**
+ * Clip a point against the view volume.
+ *
+ * \param v vertex vector describing the point to clip.
+ * 
+ * \return zero if outside view volume, or one if inside.
+ */
+static GLuint
+viewclip_point( const GLfloat v[] )
+{
+   if (   v[0] > v[3] || v[0] < -v[3]
+       || v[1] > v[3] || v[1] < -v[3]
+       || v[2] > v[3] || v[2] < -v[3] ) {
+      return 0;
+   }
+   else {
+      return 1;
+   }
+}
+
+
+/**
+ * Clip a point against the far/near Z clipping planes.
+ *
+ * \param v vertex vector describing the point to clip.
+ * 
+ * \return zero if outside view volume, or one if inside.
+ */
+static GLuint
+viewclip_point_z( const GLfloat v[] )
+{
+   if (v[2] > v[3] || v[2] < -v[3] ) {
+      return 0;
+   }
+   else {
+      return 1;
+   }
+}
+
+
+/**
+ * Clip a point against the user clipping planes.
+ * 
+ * \param ctx GL context.
+ * \param v vertex vector describing the point to clip.
+ * 
+ * \return zero if the point was clipped, or one otherwise.
+ */
+static GLuint
+userclip_point( GLcontext *ctx, const GLfloat v[] )
+{
+   GLuint p;
+
+   for (p = 0; p < ctx->Const.MaxClipPlanes; p++) {
+      if (ctx->Transform.ClipPlanesEnabled & (1 << p)) {
+	 GLfloat dot = v[0] * ctx->Transform._ClipUserPlane[p][0]
+		     + v[1] * ctx->Transform._ClipUserPlane[p][1]
+		     + v[2] * ctx->Transform._ClipUserPlane[p][2]
+		     + v[3] * ctx->Transform._ClipUserPlane[p][3];
+         if (dot < 0.0F) {
+            return 0;
+         }
+      }
+   }
+
+   return 1;
+}
+
+
+/**
+ * This has been split off to allow the normal shade routines to
+ * get a little closer to the vertex buffer, and to use the
+ * GLvector objects directly.
+ * \param ctx the context
+ * \param vertex vertex location
+ * \param normal normal vector
+ * \param Rcolor returned color
+ * \param Rspec returned specular color (if separate specular enabled)
+ * \param Rindex returned color index
+ */
+static void
+shade_rastpos(GLcontext *ctx,
+              const GLfloat vertex[4],
+              const GLfloat normal[3],
+              GLfloat Rcolor[4],
+              GLfloat Rspec[4],
+              GLfloat *Rindex)
+{
+   GLfloat (*base)[3] = ctx->Light._BaseColor;
+   struct gl_light *light;
+   GLfloat diffuseColor[4], specularColor[4];
+   GLfloat diffuse = 0, specular = 0;
+
+   if (!ctx->_ShineTable[0] || !ctx->_ShineTable[1])
+      _mesa_validate_all_lighting_tables( ctx );
+
+   COPY_3V(diffuseColor, base[0]);
+   diffuseColor[3] = CLAMP( 
+      ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE][3], 0.0F, 1.0F );
+   ASSIGN_4V(specularColor, 0.0, 0.0, 0.0, 0.0);
+
+   foreach (light, &ctx->Light.EnabledList) {
+      GLfloat n_dot_h;
+      GLfloat attenuation = 1.0;
+      GLfloat VP[3];
+      GLfloat n_dot_VP;
+      GLfloat *h;
+      GLfloat diffuseContrib[3], specularContrib[3];
+      GLboolean normalized;
+
+      if (!(light->_Flags & LIGHT_POSITIONAL)) {
+	 COPY_3V(VP, light->_VP_inf_norm);
+	 attenuation = light->_VP_inf_spot_attenuation;
+      }
+      else {
+	 GLfloat d;
+
+	 SUB_3V(VP, light->_Position, vertex);
+	 d = (GLfloat) LEN_3FV( VP );
+
+	 if ( d > 1e-6) {
+	    GLfloat invd = 1.0F / d;
+	    SELF_SCALE_SCALAR_3V(VP, invd);
+	 }
+	 attenuation = 1.0F / (light->ConstantAttenuation + d *
+			       (light->LinearAttenuation + d *
+				light->QuadraticAttenuation));
+
+	 if (light->_Flags & LIGHT_SPOT) {
+	    GLfloat PV_dot_dir = - DOT3(VP, light->_NormDirection);
+
+	    if (PV_dot_dir<light->_CosCutoff) {
+	       continue;
+	    }
+	    else {
+	       double x = PV_dot_dir * (EXP_TABLE_SIZE-1);
+	       int k = (int) x;
+	       GLfloat spot = (GLfloat) (light->_SpotExpTable[k][0]
+			       + (x-k)*light->_SpotExpTable[k][1]);
+	       attenuation *= spot;
+	    }
+	 }
+      }
+
+      if (attenuation < 1e-3)
+	 continue;
+
+      n_dot_VP = DOT3( normal, VP );
+
+      if (n_dot_VP < 0.0F) {
+	 ACC_SCALE_SCALAR_3V(diffuseColor, attenuation, light->_MatAmbient[0]);
+	 continue;
+      }
+
+      COPY_3V(diffuseContrib, light->_MatAmbient[0]);
+      ACC_SCALE_SCALAR_3V(diffuseContrib, n_dot_VP, light->_MatDiffuse[0]);
+      diffuse += n_dot_VP * light->_dli * attenuation;
+      ASSIGN_3V(specularContrib, 0.0, 0.0, 0.0);
+
+      {
+	 if (ctx->Light.Model.LocalViewer) {
+	    GLfloat v[3];
+	    COPY_3V(v, vertex);
+	    NORMALIZE_3FV(v);
+	    SUB_3V(VP, VP, v);
+	    h = VP;
+	    normalized = 0;
+	 }
+	 else if (light->_Flags & LIGHT_POSITIONAL) {
+	    h = VP;
+	    ACC_3V(h, ctx->_EyeZDir);
+	    normalized = 0;
+	 }
+         else {
+	    h = light->_h_inf_norm;
+	    normalized = 1;
+	 }
+
+	 n_dot_h = DOT3(normal, h);
+
+	 if (n_dot_h > 0.0F) {
+	    GLfloat (*mat)[4] = ctx->Light.Material.Attrib;
+	    GLfloat spec_coef;
+	    GLfloat shininess = mat[MAT_ATTRIB_FRONT_SHININESS][0];
+
+	    if (!normalized) {
+	       n_dot_h *= n_dot_h;
+	       n_dot_h /= LEN_SQUARED_3FV( h );
+	       shininess *= .5;
+	    }
+
+	    GET_SHINE_TAB_ENTRY( ctx->_ShineTable[0], n_dot_h, spec_coef );
+
+	    if (spec_coef > 1.0e-10) {
+               if (ctx->Light.Model.ColorControl==GL_SEPARATE_SPECULAR_COLOR) {
+                  ACC_SCALE_SCALAR_3V( specularContrib, spec_coef,
+                                       light->_MatSpecular[0]);
+               }
+               else {
+                  ACC_SCALE_SCALAR_3V( diffuseContrib, spec_coef,
+                                       light->_MatSpecular[0]);
+               }
+	       specular += spec_coef * light->_sli * attenuation;
+	    }
+	 }
+      }
+
+      ACC_SCALE_SCALAR_3V( diffuseColor, attenuation, diffuseContrib );
+      ACC_SCALE_SCALAR_3V( specularColor, attenuation, specularContrib );
+   }
+
+   if (ctx->Visual.rgbMode) {
+      Rcolor[0] = CLAMP(diffuseColor[0], 0.0F, 1.0F);
+      Rcolor[1] = CLAMP(diffuseColor[1], 0.0F, 1.0F);
+      Rcolor[2] = CLAMP(diffuseColor[2], 0.0F, 1.0F);
+      Rcolor[3] = CLAMP(diffuseColor[3], 0.0F, 1.0F);
+      Rspec[0] = CLAMP(specularColor[0], 0.0F, 1.0F);
+      Rspec[1] = CLAMP(specularColor[1], 0.0F, 1.0F);
+      Rspec[2] = CLAMP(specularColor[2], 0.0F, 1.0F);
+      Rspec[3] = CLAMP(specularColor[3], 0.0F, 1.0F);
+   }
+   else {
+      GLfloat *ind = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_INDEXES];
+      GLfloat d_a = ind[MAT_INDEX_DIFFUSE] - ind[MAT_INDEX_AMBIENT];
+      GLfloat s_a = ind[MAT_INDEX_SPECULAR] - ind[MAT_INDEX_AMBIENT];
+      GLfloat i = (ind[MAT_INDEX_AMBIENT]
+		   + diffuse * (1.0F-specular) * d_a
+		   + specular * s_a);
+      if (i > ind[MAT_INDEX_SPECULAR]) {
+	 i = ind[MAT_INDEX_SPECULAR];
+      }
+      *Rindex = i;
+   }
+}
+
+
+/**
+ * Do texgen needed for glRasterPos.
+ * \param ctx  rendering context
+ * \param vObj  object-space vertex coordinate
+ * \param vEye  eye-space vertex coordinate
+ * \param normal  vertex normal
+ * \param unit  texture unit number
+ * \param texcoord  incoming texcoord and resulting texcoord
+ */
+static void
+compute_texgen(GLcontext *ctx, const GLfloat vObj[4], const GLfloat vEye[4],
+               const GLfloat normal[3], GLuint unit, GLfloat texcoord[4])
+{
+   const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
+
+   /* always compute sphere map terms, just in case */
+   GLfloat u[3], two_nu, rx, ry, rz, m, mInv;
+   COPY_3V(u, vEye);
+   NORMALIZE_3FV(u);
+   two_nu = 2.0F * DOT3(normal, u);
+   rx = u[0] - normal[0] * two_nu;
+   ry = u[1] - normal[1] * two_nu;
+   rz = u[2] - normal[2] * two_nu;
+   m = rx * rx + ry * ry + (rz + 1.0F) * (rz + 1.0F);
+   if (m > 0.0F)
+      mInv = 0.5F * _mesa_inv_sqrtf(m);
+   else
+      mInv = 0.0F;
+
+   if (texUnit->TexGenEnabled & S_BIT) {
+      switch (texUnit->GenModeS) {
+         case GL_OBJECT_LINEAR:
+            texcoord[0] = DOT4(vObj, texUnit->ObjectPlaneS);
+            break;
+         case GL_EYE_LINEAR:
+            texcoord[0] = DOT4(vEye, texUnit->EyePlaneS);
+            break;
+         case GL_SPHERE_MAP:
+            texcoord[0] = rx * mInv + 0.5F;
+            break;
+         case GL_REFLECTION_MAP:
+            texcoord[0] = rx;
+            break;
+         case GL_NORMAL_MAP:
+            texcoord[0] = normal[0];
+            break;
+         default:
+            _mesa_problem(ctx, "Bad S texgen in compute_texgen()");
+            return;
+      }
+   }
+
+   if (texUnit->TexGenEnabled & T_BIT) {
+      switch (texUnit->GenModeT) {
+         case GL_OBJECT_LINEAR:
+            texcoord[1] = DOT4(vObj, texUnit->ObjectPlaneT);
+            break;
+         case GL_EYE_LINEAR:
+            texcoord[1] = DOT4(vEye, texUnit->EyePlaneT);
+            break;
+         case GL_SPHERE_MAP:
+            texcoord[1] = ry * mInv + 0.5F;
+            break;
+         case GL_REFLECTION_MAP:
+            texcoord[1] = ry;
+            break;
+         case GL_NORMAL_MAP:
+            texcoord[1] = normal[1];
+            break;
+         default:
+            _mesa_problem(ctx, "Bad T texgen in compute_texgen()");
+            return;
+      }
+   }
+
+   if (texUnit->TexGenEnabled & R_BIT) {
+      switch (texUnit->GenModeR) {
+         case GL_OBJECT_LINEAR:
+            texcoord[2] = DOT4(vObj, texUnit->ObjectPlaneR);
+            break;
+         case GL_EYE_LINEAR:
+            texcoord[2] = DOT4(vEye, texUnit->EyePlaneR);
+            break;
+         case GL_REFLECTION_MAP:
+            texcoord[2] = rz;
+            break;
+         case GL_NORMAL_MAP:
+            texcoord[2] = normal[2];
+            break;
+         default:
+            _mesa_problem(ctx, "Bad R texgen in compute_texgen()");
+            return;
+      }
+   }
+
+   if (texUnit->TexGenEnabled & Q_BIT) {
+      switch (texUnit->GenModeQ) {
+         case GL_OBJECT_LINEAR:
+            texcoord[3] = DOT4(vObj, texUnit->ObjectPlaneQ);
+            break;
+         case GL_EYE_LINEAR:
+            texcoord[3] = DOT4(vEye, texUnit->EyePlaneQ);
+            break;
+         default:
+            _mesa_problem(ctx, "Bad Q texgen in compute_texgen()");
+            return;
+      }
+   }
+}
+
+
+
+/**
+ * Set the raster position for pixel operations.
+ *
+ * All glRasterPos command call this function to update the current
+ * raster position.
+ * 
+ * \param ctx GL context.
+ * \param x x coordinate for the raster position.
+ * \param y y coordinate for the raster position.
+ * \param z z coordinate for the raster position.
+ * \param w w coordinate for the raster position.
+ * 
+ * \sa Called by _mesa_RasterPos4f().
+ *
+ * Flushes the vertices, transforms and clips the vertex coordinates, and
+ * finally sets the current raster position and associated data in
+ * __GLcontextRec::Current.  When in selection mode calls
+ * _mesa_update_hitflag() with the current raster position.
+ */
+static void
+raster_pos4f(GLcontext *ctx, GLfloat x, GLfloat y, GLfloat z, GLfloat w)
+{
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+   FLUSH_CURRENT(ctx, 0);
+
+   if (ctx->NewState)
+      _mesa_update_state( ctx );
+
+   if (ctx->VertexProgram._Enabled) {
+      /* XXX implement this */
+      _mesa_problem(ctx, "Vertex programs not implemented for glRasterPos");
+      return;
+   }
+   else {
+      GLfloat obj[4], eye[4], clip[4], ndc[3], d;
+      GLfloat *norm, eyenorm[3];
+      GLfloat *objnorm = ctx->Current.Attrib[VERT_ATTRIB_NORMAL];
+
+      ASSIGN_4V( obj, x, y, z, w );
+      /* apply modelview matrix:  eye = MV * obj */
+      TRANSFORM_POINT( eye, ctx->ModelviewMatrixStack.Top->m, obj );
+      /* apply projection matrix:  clip = Proj * eye */
+      TRANSFORM_POINT( clip, ctx->ProjectionMatrixStack.Top->m, eye );
+
+      /* clip to view volume */
+      if (ctx->Transform.RasterPositionUnclipped) {
+         /* GL_IBM_rasterpos_clip: only clip against Z */
+         if (viewclip_point_z(clip) == 0) {
+            ctx->Current.RasterPosValid = GL_FALSE;
+            return;
+         }
+      }
+      else if (viewclip_point(clip) == 0) {
+         /* Normal OpenGL behaviour */
+         ctx->Current.RasterPosValid = GL_FALSE;
+         return;
+      }
+
+      /* clip to user clipping planes */
+      if (ctx->Transform.ClipPlanesEnabled && !userclip_point(ctx, clip)) {
+         ctx->Current.RasterPosValid = GL_FALSE;
+         return;
+      }
+
+      /* ndc = clip / W */
+      d = (clip[3] == 0.0F) ? 1.0F : 1.0F / clip[3];
+      ndc[0] = clip[0] * d;
+      ndc[1] = clip[1] * d;
+      ndc[2] = clip[2] * d;
+      /* wincoord = viewport_mapping(ndc) */
+      ctx->Current.RasterPos[0] = (ndc[0] * ctx->Viewport._WindowMap.m[MAT_SX]
+                                   + ctx->Viewport._WindowMap.m[MAT_TX]);
+      ctx->Current.RasterPos[1] = (ndc[1] * ctx->Viewport._WindowMap.m[MAT_SY]
+                                   + ctx->Viewport._WindowMap.m[MAT_TY]);
+      ctx->Current.RasterPos[2] = (ndc[2] * ctx->Viewport._WindowMap.m[MAT_SZ]
+                                   + ctx->Viewport._WindowMap.m[MAT_TZ])
+                                  / ctx->DrawBuffer->_DepthMaxF;
+      ctx->Current.RasterPos[3] = clip[3];
+
+      /* compute raster distance */
+      if (ctx->Fog.FogCoordinateSource == GL_FOG_COORDINATE_EXT)
+         ctx->Current.RasterDistance = ctx->Current.Attrib[VERT_ATTRIB_FOG][0];
+      else
+         ctx->Current.RasterDistance =
+                        SQRTF( eye[0]*eye[0] + eye[1]*eye[1] + eye[2]*eye[2] );
+
+      /* compute transformed normal vector (for lighting or texgen) */
+      if (ctx->_NeedEyeCoords) {
+         const GLfloat *inv = ctx->ModelviewMatrixStack.Top->inv;
+         TRANSFORM_NORMAL( eyenorm, objnorm, inv );
+         norm = eyenorm;
+      }
+      else {
+         norm = objnorm;
+      }
+
+      /* update raster color */
+      if (ctx->Light.Enabled) {
+         /* lighting */
+         shade_rastpos( ctx, obj, norm,
+                        ctx->Current.RasterColor,
+                        ctx->Current.RasterSecondaryColor,
+                        &ctx->Current.RasterIndex );
+      }
+      else {
+         /* use current color or index */
+         if (ctx->Visual.rgbMode) {
+            COPY_4FV(ctx->Current.RasterColor,
+                     ctx->Current.Attrib[VERT_ATTRIB_COLOR0]);
+            COPY_4FV(ctx->Current.RasterSecondaryColor,
+                     ctx->Current.Attrib[VERT_ATTRIB_COLOR1]);
+         }
+         else {
+            ctx->Current.RasterIndex = ctx->Current.Index;
+         }
+      }
+
+      /* texture coords */
+      {
+         GLuint u;
+         for (u = 0; u < ctx->Const.MaxTextureCoordUnits; u++) {
+            GLfloat tc[4];
+            COPY_4V(tc, ctx->Current.Attrib[VERT_ATTRIB_TEX0 + u]);
+            if (ctx->Texture.Unit[u].TexGenEnabled) {
+               compute_texgen(ctx, obj, eye, norm, u, tc);
+            }
+            TRANSFORM_POINT(ctx->Current.RasterTexCoords[u],
+                            ctx->TextureMatrixStack[u].Top->m, tc);
+         }
+      }
+
+      ctx->Current.RasterPosValid = GL_TRUE;
+   }
+
+   if (ctx->RenderMode == GL_SELECT) {
+      _mesa_update_hitflag( ctx, ctx->Current.RasterPos[2] );
+   }
+}
+
+
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
+_mesa_RasterPos2d(GLdouble x, GLdouble y)
+{
+   _mesa_RasterPos4f((GLfloat) x, (GLfloat) y, 0.0F, 1.0F);
+}
+
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
+_mesa_RasterPos2f(GLfloat x, GLfloat y)
+{
+   _mesa_RasterPos4f(x, y, 0.0F, 1.0F);
+}
+
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
+_mesa_RasterPos2i(GLint x, GLint y)
+{
+   _mesa_RasterPos4f((GLfloat) x, (GLfloat) y, 0.0F, 1.0F);
+}
+
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
+_mesa_RasterPos2s(GLshort x, GLshort y)
+{
+   _mesa_RasterPos4f(x, y, 0.0F, 1.0F);
+}
+
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
+_mesa_RasterPos3d(GLdouble x, GLdouble y, GLdouble z)
+{
+   _mesa_RasterPos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F);
+}
+
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
+_mesa_RasterPos3f(GLfloat x, GLfloat y, GLfloat z)
+{
+   _mesa_RasterPos4f(x, y, z, 1.0F);
+}
+
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
+_mesa_RasterPos3i(GLint x, GLint y, GLint z)
+{
+   _mesa_RasterPos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F);
+}
+
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
+_mesa_RasterPos3s(GLshort x, GLshort y, GLshort z)
+{
+   _mesa_RasterPos4f(x, y, z, 1.0F);
+}
+
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
+_mesa_RasterPos4d(GLdouble x, GLdouble y, GLdouble z, GLdouble w)
+{
+   _mesa_RasterPos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w);
+}
+
+/** Calls raster_pos4f() */
+void GLAPIENTRY
+_mesa_RasterPos4f(GLfloat x, GLfloat y, GLfloat z, GLfloat w)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   raster_pos4f(ctx, x, y, z, w);
+}
+
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
+_mesa_RasterPos4i(GLint x, GLint y, GLint z, GLint w)
+{
+   _mesa_RasterPos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w);
+}
+
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
+_mesa_RasterPos4s(GLshort x, GLshort y, GLshort z, GLshort w)
+{
+   _mesa_RasterPos4f(x, y, z, w);
+}
+
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
+_mesa_RasterPos2dv(const GLdouble *v)
+{
+   _mesa_RasterPos4f((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F);
+}
+
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
+_mesa_RasterPos2fv(const GLfloat *v)
+{
+   _mesa_RasterPos4f(v[0], v[1], 0.0F, 1.0F);
+}
+
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
+_mesa_RasterPos2iv(const GLint *v)
+{
+   _mesa_RasterPos4f((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F);
+}
+
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
+_mesa_RasterPos2sv(const GLshort *v)
+{
+   _mesa_RasterPos4f(v[0], v[1], 0.0F, 1.0F);
+}
+
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
+_mesa_RasterPos3dv(const GLdouble *v)
+{
+   _mesa_RasterPos4f((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F);
+}
+
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
+_mesa_RasterPos3fv(const GLfloat *v)
+{
+   _mesa_RasterPos4f(v[0], v[1], v[2], 1.0F);
+}
+
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
+_mesa_RasterPos3iv(const GLint *v)
+{
+   _mesa_RasterPos4f((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F);
+}
+
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
+_mesa_RasterPos3sv(const GLshort *v)
+{
+   _mesa_RasterPos4f(v[0], v[1], v[2], 1.0F);
+}
+
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
+_mesa_RasterPos4dv(const GLdouble *v)
+{
+   _mesa_RasterPos4f((GLfloat) v[0], (GLfloat) v[1], 
+		     (GLfloat) v[2], (GLfloat) v[3]);
+}
+
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
+_mesa_RasterPos4fv(const GLfloat *v)
+{
+   _mesa_RasterPos4f(v[0], v[1], v[2], v[3]);
+}
+
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
+_mesa_RasterPos4iv(const GLint *v)
+{
+   _mesa_RasterPos4f((GLfloat) v[0], (GLfloat) v[1], 
+		     (GLfloat) v[2], (GLfloat) v[3]);
+}
+
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
+_mesa_RasterPos4sv(const GLshort *v)
+{
+   _mesa_RasterPos4f(v[0], v[1], v[2], v[3]);
+}
+
+
+/**********************************************************************/
+/***           GL_ARB_window_pos / GL_MESA_window_pos               ***/
+/**********************************************************************/
+
+#if FEATURE_windowpos
+/**
+ * All glWindowPosMESA and glWindowPosARB commands call this function to
+ * update the current raster position.
+ */
+static void
+window_pos3f(GLfloat x, GLfloat y, GLfloat z)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   GLfloat z2;
+
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+   FLUSH_CURRENT(ctx, 0);
+
+   z2 = CLAMP(z, 0.0F, 1.0F) * (ctx->Viewport.Far - ctx->Viewport.Near)
+      + ctx->Viewport.Near;
+
+   /* set raster position */
+   ctx->Current.RasterPos[0] = x;
+   ctx->Current.RasterPos[1] = y;
+   ctx->Current.RasterPos[2] = z2;
+   ctx->Current.RasterPos[3] = 1.0F;
+
+   ctx->Current.RasterPosValid = GL_TRUE;
+
+   if (ctx->Fog.FogCoordinateSource == GL_FOG_COORDINATE_EXT)
+      ctx->Current.RasterDistance = ctx->Current.Attrib[VERT_ATTRIB_FOG][0];
+   else
+      ctx->Current.RasterDistance = 0.0;
+
+   /* raster color = current color or index */
+   if (ctx->Visual.rgbMode) {
+      ctx->Current.RasterColor[0]
+         = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR0][0], 0.0F, 1.0F);
+      ctx->Current.RasterColor[1]
+         = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR0][1], 0.0F, 1.0F);
+      ctx->Current.RasterColor[2]
+         = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR0][2], 0.0F, 1.0F);
+      ctx->Current.RasterColor[3]
+         = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR0][3], 0.0F, 1.0F);
+      ctx->Current.RasterSecondaryColor[0]
+         = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR1][0], 0.0F, 1.0F);
+      ctx->Current.RasterSecondaryColor[1]
+         = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR1][1], 0.0F, 1.0F);
+      ctx->Current.RasterSecondaryColor[2]
+         = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR1][2], 0.0F, 1.0F);
+      ctx->Current.RasterSecondaryColor[3]
+         = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR1][3], 0.0F, 1.0F);
+   }
+   else {
+      ctx->Current.RasterIndex = ctx->Current.Index;
+   }
+
+   /* raster texcoord = current texcoord */
+   {
+      GLuint texSet;
+      for (texSet = 0; texSet < ctx->Const.MaxTextureCoordUnits; texSet++) {
+         COPY_4FV( ctx->Current.RasterTexCoords[texSet],
+                  ctx->Current.Attrib[VERT_ATTRIB_TEX0 + texSet] );
+      }
+   }
+
+   if (ctx->RenderMode==GL_SELECT) {
+      _mesa_update_hitflag( ctx, ctx->Current.RasterPos[2] );
+   }
+}
+
+
+/* This is just to support the GL_MESA_window_pos version */
+static void
+window_pos4f(GLfloat x, GLfloat y, GLfloat z, GLfloat w)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   window_pos3f(x, y, z);
+   ctx->Current.RasterPos[3] = w;
+}
+
+
+void GLAPIENTRY
+_mesa_WindowPos2dMESA(GLdouble x, GLdouble y)
+{
+   window_pos4f((GLfloat) x, (GLfloat) y, 0.0F, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos2fMESA(GLfloat x, GLfloat y)
+{
+   window_pos4f(x, y, 0.0F, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos2iMESA(GLint x, GLint y)
+{
+   window_pos4f((GLfloat) x, (GLfloat) y, 0.0F, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos2sMESA(GLshort x, GLshort y)
+{
+   window_pos4f(x, y, 0.0F, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos3dMESA(GLdouble x, GLdouble y, GLdouble z)
+{
+   window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos3fMESA(GLfloat x, GLfloat y, GLfloat z)
+{
+   window_pos4f(x, y, z, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos3iMESA(GLint x, GLint y, GLint z)
+{
+   window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos3sMESA(GLshort x, GLshort y, GLshort z)
+{
+   window_pos4f(x, y, z, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos4dMESA(GLdouble x, GLdouble y, GLdouble z, GLdouble w)
+{
+   window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos4fMESA(GLfloat x, GLfloat y, GLfloat z, GLfloat w)
+{
+   window_pos4f(x, y, z, w);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos4iMESA(GLint x, GLint y, GLint z, GLint w)
+{
+   window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos4sMESA(GLshort x, GLshort y, GLshort z, GLshort w)
+{
+   window_pos4f(x, y, z, w);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos2dvMESA(const GLdouble *v)
+{
+   window_pos4f((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos2fvMESA(const GLfloat *v)
+{
+   window_pos4f(v[0], v[1], 0.0F, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos2ivMESA(const GLint *v)
+{
+   window_pos4f((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos2svMESA(const GLshort *v)
+{
+   window_pos4f(v[0], v[1], 0.0F, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos3dvMESA(const GLdouble *v)
+{
+   window_pos4f((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos3fvMESA(const GLfloat *v)
+{
+   window_pos4f(v[0], v[1], v[2], 1.0);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos3ivMESA(const GLint *v)
+{
+   window_pos4f((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos3svMESA(const GLshort *v)
+{
+   window_pos4f(v[0], v[1], v[2], 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos4dvMESA(const GLdouble *v)
+{
+   window_pos4f((GLfloat) v[0], (GLfloat) v[1], 
+			 (GLfloat) v[2], (GLfloat) v[3]);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos4fvMESA(const GLfloat *v)
+{
+   window_pos4f(v[0], v[1], v[2], v[3]);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos4ivMESA(const GLint *v)
+{
+   window_pos4f((GLfloat) v[0], (GLfloat) v[1], 
+			 (GLfloat) v[2], (GLfloat) v[3]);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos4svMESA(const GLshort *v)
+{
+   window_pos4f(v[0], v[1], v[2], v[3]);
+}
+
+#endif
+
+#if 0
+
+/*
+ * OpenGL implementation of glWindowPos*MESA()
+ */
+void glWindowPos4fMESA( GLfloat x, GLfloat y, GLfloat z, GLfloat w )
+{
+   GLfloat fx, fy;
+
+   /* Push current matrix mode and viewport attributes */
+   glPushAttrib( GL_TRANSFORM_BIT | GL_VIEWPORT_BIT );
+
+   /* Setup projection parameters */
+   glMatrixMode( GL_PROJECTION );
+   glPushMatrix();
+   glLoadIdentity();
+   glMatrixMode( GL_MODELVIEW );
+   glPushMatrix();
+   glLoadIdentity();
+
+   glDepthRange( z, z );
+   glViewport( (int) x - 1, (int) y - 1, 2, 2 );
+
+   /* set the raster (window) position */
+   fx = x - (int) x;
+   fy = y - (int) y;
+   glRasterPos4f( fx, fy, 0.0, w );
+
+   /* restore matrices, viewport and matrix mode */
+   glPopMatrix();
+   glMatrixMode( GL_PROJECTION );
+   glPopMatrix();
+
+   glPopAttrib();
+}
+
+#endif
+
+
+/**********************************************************************/
+/** \name Initialization                                              */
+/**********************************************************************/
+/*@{*/
+
+/**
+ * Initialize the context current raster position information.
+ *
+ * \param ctx GL context.
+ *
+ * Initialize the current raster position information in
+ * __GLcontextRec::Current, and adds the extension entry points to the
+ * dispatcher.
+ */
+void _mesa_init_rastpos( GLcontext * ctx )
+{
+   int i;
+
+   ASSIGN_4V( ctx->Current.RasterPos, 0.0, 0.0, 0.0, 1.0 );
+   ctx->Current.RasterDistance = 0.0;
+   ASSIGN_4V( ctx->Current.RasterColor, 1.0, 1.0, 1.0, 1.0 );
+   ctx->Current.RasterIndex = 1.0;
+   for (i=0; i<MAX_TEXTURE_UNITS; i++)
+      ASSIGN_4V( ctx->Current.RasterTexCoords[i], 0.0, 0.0, 0.0, 1.0 );
+   ctx->Current.RasterPosValid = GL_TRUE;
+}
+
+/*@}*/