tnl: remove t_rasterpos.c

Reviewed-by: Roland Scheidegger <[email protected]>

1 files changed, 0 insertions, 478 deletions

diff --git a/src/mesa/tnl/t_rasterpos.c b/src/mesa/tnl/t_rasterpos.c
deleted file mode 100644
index 4bd9ac8539e..00000000000
--- a/src/mesa/tnl/t_rasterpos.c
+++ /dev/null
@@ -1,478 +0,0 @@
-/*
- * Mesa 3-D graphics library
- *
- * Copyright (C) 1999-2007  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
- * 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 "c99_math.h"
-#include "main/glheader.h"
-#include "main/feedback.h"
-#include "main/light.h"
-#include "main/macros.h"
-#include "util/simple_list.h"
-#include "main/mtypes.h"
-#include "main/viewport.h"
-
-#include "math/m_matrix.h"
-#include "tnl/tnl.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_xy( const GLfloat v[] )
-{
-   if (   v[0] > v[3] || v[0] < -v[3]
-       || v[1] > v[3] || v[1] < -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( struct gl_context *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;
-}
-
-
-/**
- * Compute lighting for the raster position.  RGB modes computed.
- * \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)
- */
-static void
-shade_rastpos(struct gl_context *ctx,
-              const GLfloat vertex[4],
-              const GLfloat normal[3],
-              GLfloat Rcolor[4],
-              GLfloat Rspec[4])
-{
-   /*const*/ GLfloat (*base)[3] = ctx->Light._BaseColor;
-   const struct gl_light *light;
-   GLfloat diffuseColor[4], specularColor[4];  /* for RGB mode only */
-
-   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, 1.0);
-
-   foreach (light, &ctx->Light.EnabledList) {
-      GLfloat attenuation = 1.0;
-      GLfloat VP[3]; /* vector from vertex to light pos */
-      GLfloat n_dot_VP;
-      GLfloat diffuseContrib[3], specularContrib[3];
-
-      if (!(light->_Flags & LIGHT_POSITIONAL)) {
-         /* light at infinity */
-	 COPY_3V(VP, light->_VP_inf_norm);
-	 attenuation = light->_VP_inf_spot_attenuation;
-      }
-      else {
-         /* local/positional light */
-	 GLfloat d;
-
-         /* VP = vector from vertex pos to light[i].pos */
-	 SUB_3V(VP, light->_Position, vertex);
-         /* d = length(VP) */
-	 d = (GLfloat) LEN_3FV( VP );
-	 if (d > 1.0e-6F) {
-            /* normalize VP */
-	    GLfloat invd = 1.0F / d;
-	    SELF_SCALE_SCALAR_3V(VP, invd);
-	 }
-
-         /* atti */
-	 attenuation = 1.0F / (light->ConstantAttenuation + d *
-			       (light->LinearAttenuation + d *
-				light->QuadraticAttenuation));
-
-	 if (light->_Flags & LIGHT_SPOT) {
-	    GLfloat PV_dot_dir = - DOT3(VP, light->_NormSpotDirection);
-
-	    if (PV_dot_dir<light->_CosCutoff) {
-	       continue;
-	    }
-	    else {
-               GLfloat spot = powf(PV_dot_dir, light->SpotExponent);
-	       attenuation *= spot;
-	    }
-	 }
-      }
-
-      if (attenuation < 1e-3F)
-	 continue;
-
-      n_dot_VP = DOT3( normal, VP );
-
-      if (n_dot_VP < 0.0F) {
-	 ACC_SCALE_SCALAR_3V(diffuseColor, attenuation, light->_MatAmbient[0]);
-	 continue;
-      }
-
-      /* Ambient + diffuse */
-      COPY_3V(diffuseContrib, light->_MatAmbient[0]);
-      ACC_SCALE_SCALAR_3V(diffuseContrib, n_dot_VP, light->_MatDiffuse[0]);
-
-      /* Specular */
-      {
-         const GLfloat *h;
-         GLfloat n_dot_h;
-
-         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);
-            NORMALIZE_3FV(VP);
-	    h = VP;
-	 }
-	 else if (light->_Flags & LIGHT_POSITIONAL) {
-	    ACC_3V(VP, ctx->_EyeZDir);
-            NORMALIZE_3FV(VP);
-	    h = VP;
-	 }
-         else {
-	    h = light->_h_inf_norm;
-	 }
-
-	 n_dot_h = DOT3(normal, h);
-
-	 if (n_dot_h > 0.0F) {
-	    GLfloat shine;
-	    GLfloat spec_coef;
-
-	    shine = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SHININESS][0];
-	    spec_coef = powf(n_dot_h, shine);
-
-	    if (spec_coef > 1.0e-10F) {
-               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]);
-               }
-	    }
-	 }
-      }
-
-      ACC_SCALE_SCALAR_3V( diffuseColor, attenuation, diffuseContrib );
-      ACC_SCALE_SCALAR_3V( specularColor, attenuation, specularContrib );
-   }
-
-   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);
-}
-
-
-/**
- * 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(struct gl_context *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 * (1.0f / sqrtf(m));
-   else
-      mInv = 0.0F;
-
-   if (texUnit->TexGenEnabled & S_BIT) {
-      switch (texUnit->GenS.Mode) {
-         case GL_OBJECT_LINEAR:
-            texcoord[0] = DOT4(vObj, texUnit->GenS.ObjectPlane);
-            break;
-         case GL_EYE_LINEAR:
-            texcoord[0] = DOT4(vEye, texUnit->GenS.EyePlane);
-            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->GenT.Mode) {
-         case GL_OBJECT_LINEAR:
-            texcoord[1] = DOT4(vObj, texUnit->GenT.ObjectPlane);
-            break;
-         case GL_EYE_LINEAR:
-            texcoord[1] = DOT4(vEye, texUnit->GenT.EyePlane);
-            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->GenR.Mode) {
-         case GL_OBJECT_LINEAR:
-            texcoord[2] = DOT4(vObj, texUnit->GenR.ObjectPlane);
-            break;
-         case GL_EYE_LINEAR:
-            texcoord[2] = DOT4(vEye, texUnit->GenR.EyePlane);
-            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->GenQ.Mode) {
-         case GL_OBJECT_LINEAR:
-            texcoord[3] = DOT4(vObj, texUnit->GenQ.ObjectPlane);
-            break;
-         case GL_EYE_LINEAR:
-            texcoord[3] = DOT4(vEye, texUnit->GenQ.EyePlane);
-            break;
-         default:
-            _mesa_problem(ctx, "Bad Q texgen in compute_texgen()");
-            return;
-      }
-   }
-}
-
-
-/**
- * glRasterPos transformation.  Typically called via ctx->Driver.RasterPos().
- * XXX some of this code (such as viewport xform, clip testing and setting
- * of ctx->Current.Raster* fields) could get lifted up into the
- * main/rasterpos.c code.
- *
- * \param vObj  vertex position in object space
- */
-void
-_tnl_RasterPos(struct gl_context *ctx, const GLfloat vObj[4])
-{
-   if (ctx->VertexProgram._Enabled) {
-      /* XXX implement this */
-      _mesa_problem(ctx, "Vertex programs not implemented for glRasterPos");
-      return;
-   }
-   else {
-      GLfloat eye[4], clip[4], ndc[3], d;
-      GLfloat *norm, eyenorm[3];
-      GLfloat *objnorm = ctx->Current.Attrib[VERT_ATTRIB_NORMAL];
-      float scale[3], translate[3];
-
-      /* apply modelview matrix:  eye = MV * obj */
-      TRANSFORM_POINT( eye, ctx->ModelviewMatrixStack.Top->m, vObj );
-      /* apply projection matrix:  clip = Proj * eye */
-      TRANSFORM_POINT( clip, ctx->ProjectionMatrixStack.Top->m, eye );
-
-      /* clip to view volume. */
-      if (!ctx->Transform.DepthClamp) {
-         if (viewclip_point_z(clip) == 0) {
-            ctx->Current.RasterPosValid = GL_FALSE;
-            return;
-         }
-      }
-      if (!ctx->Transform.RasterPositionUnclipped) {
-         if (viewclip_point_xy(clip) == 0) {
-            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) */
-      _mesa_get_viewport_xform(ctx, 0, scale, translate);
-      ctx->Current.RasterPos[0] = ndc[0] * scale[0] + translate[0];
-      ctx->Current.RasterPos[1] = ndc[1] * scale[1] + translate[1];
-      ctx->Current.RasterPos[2] = ndc[2] * scale[2] + translate[2];
-      ctx->Current.RasterPos[3] = clip[3];
-
-      if (ctx->Transform.DepthClamp) {
-	 ctx->Current.RasterPos[3] = CLAMP(ctx->Current.RasterPos[3],
-					   ctx->ViewportArray[0].Near,
-					   ctx->ViewportArray[0].Far);
-      }
-
-      /* 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, vObj, norm,
-                        ctx->Current.RasterColor,
-                        ctx->Current.RasterSecondaryColor );
-      }
-      else {
-         /* use current color */
-	 COPY_4FV(ctx->Current.RasterColor,
-		  ctx->Current.Attrib[VERT_ATTRIB_COLOR0]);
-	 COPY_4FV(ctx->Current.RasterSecondaryColor,
-		  ctx->Current.Attrib[VERT_ATTRIB_COLOR1]);
-      }
-
-      /* 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, vObj, 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] );
-   }
-}