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

1 files changed, 339 insertions, 0 deletions

diff --git a/mesalib/src/mesa/main/texgen.c b/mesalib/src/mesa/main/texgen.c
new file mode 100644
index 000000000..e3feb024c
--- /dev/null
+++ b/mesalib/src/mesa/main/texgen.c
@@ -0,0 +1,339 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.5
+ *
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2009  VMware, Inc.  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 texgen.c
+ *
+ * glTexGen-related functions
+ */
+
+
+#include "main/glheader.h"
+#include "main/context.h"
+#include "main/enums.h"
+#include "main/macros.h"
+#include "main/texgen.h"
+#include "math/m_matrix.h"
+
+
+/**
+ * Return texgen state for given coordinate
+ */
+static struct gl_texgen *
+get_texgen(struct gl_texture_unit *texUnit, GLenum coord)
+{
+   switch (coord) {
+   case GL_S:
+      return &texUnit->GenS;
+   case GL_T:
+      return &texUnit->GenT;
+   case GL_R:
+      return &texUnit->GenR;
+   case GL_Q:
+      return &texUnit->GenQ;
+   default:
+      return NULL;
+   }
+}
+
+
+void GLAPIENTRY
+_mesa_TexGenfv( GLenum coord, GLenum pname, const GLfloat *params )
+{
+   struct gl_texture_unit *texUnit;
+   struct gl_texgen *texgen;
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (MESA_VERBOSE&(VERBOSE_API|VERBOSE_TEXTURE))
+      _mesa_debug(ctx, "glTexGen %s %s %.1f(%s)...\n",
+                  _mesa_lookup_enum_by_nr(coord),
+                  _mesa_lookup_enum_by_nr(pname),
+                  *params,
+		  _mesa_lookup_enum_by_nr((GLenum) (GLint) *params));
+
+   if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glTexGen(current unit)");
+      return;
+   }
+
+   texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+
+   texgen = get_texgen(texUnit, coord);
+   if (!texgen) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glTexGen(coord)");
+      return;
+   }
+
+   switch (pname) {
+   case GL_TEXTURE_GEN_MODE:
+      {
+         GLenum mode = (GLenum) (GLint) params[0];
+         GLbitfield bit = 0x0;
+         if (texgen->Mode == mode)
+            return;
+         switch (mode) {
+         case GL_OBJECT_LINEAR:
+            bit = TEXGEN_OBJ_LINEAR;
+            break;
+         case GL_EYE_LINEAR:
+            bit = TEXGEN_EYE_LINEAR;
+            break;
+         case GL_SPHERE_MAP:
+            if (coord == GL_S || coord == GL_T)
+               bit = TEXGEN_SPHERE_MAP;
+            break;
+         case GL_REFLECTION_MAP_NV:
+            if (coord != GL_Q)
+               bit = TEXGEN_REFLECTION_MAP_NV;
+            break;
+         case GL_NORMAL_MAP_NV:
+            if (coord != GL_Q)
+               bit = TEXGEN_NORMAL_MAP_NV;
+            break;
+         default:
+            ; /* nop */
+         }
+         if (!bit) {
+            _mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(param)" );
+            return;
+         }
+         FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+         texgen->Mode = mode;
+         texgen->_ModeBit = bit;
+      }
+      break;
+
+   case GL_OBJECT_PLANE:
+      {
+         if (TEST_EQ_4V(texgen->ObjectPlane, params))
+            return;
+         FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+         COPY_4FV(texgen->ObjectPlane, params);
+      }
+      break;
+
+   case GL_EYE_PLANE:
+      {
+         GLfloat tmp[4];
+         /* Transform plane equation by the inverse modelview matrix */
+         if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top)) {
+            _math_matrix_analyse(ctx->ModelviewMatrixStack.Top);
+         }
+         _mesa_transform_vector(tmp, params,
+                                ctx->ModelviewMatrixStack.Top->inv);
+         if (TEST_EQ_4V(texgen->EyePlane, tmp))
+            return;
+         FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+         COPY_4FV(texgen->EyePlane, tmp);
+      }
+      break;
+
+   default:
+      _mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(pname)" );
+      return;
+   }
+
+   if (ctx->Driver.TexGen)
+      ctx->Driver.TexGen( ctx, coord, pname, params );
+}
+
+
+void GLAPIENTRY
+_mesa_TexGeniv(GLenum coord, GLenum pname, const GLint *params )
+{
+   GLfloat p[4];
+   p[0] = (GLfloat) params[0];
+   if (pname == GL_TEXTURE_GEN_MODE) {
+      p[1] = p[2] = p[3] = 0.0F;
+   }
+   else {
+      p[1] = (GLfloat) params[1];
+      p[2] = (GLfloat) params[2];
+      p[3] = (GLfloat) params[3];
+   }
+   _mesa_TexGenfv(coord, pname, p);
+}
+
+
+void GLAPIENTRY
+_mesa_TexGend(GLenum coord, GLenum pname, GLdouble param )
+{
+   GLfloat p = (GLfloat) param;
+   _mesa_TexGenfv( coord, pname, &p );
+}
+
+
+void GLAPIENTRY
+_mesa_TexGendv(GLenum coord, GLenum pname, const GLdouble *params )
+{
+   GLfloat p[4];
+   p[0] = (GLfloat) params[0];
+   if (pname == GL_TEXTURE_GEN_MODE) {
+      p[1] = p[2] = p[3] = 0.0F;
+   }
+   else {
+      p[1] = (GLfloat) params[1];
+      p[2] = (GLfloat) params[2];
+      p[3] = (GLfloat) params[3];
+   }
+   _mesa_TexGenfv( coord, pname, p );
+}
+
+
+void GLAPIENTRY
+_mesa_TexGenf( GLenum coord, GLenum pname, GLfloat param )
+{
+   _mesa_TexGenfv(coord, pname, &param);
+}
+
+
+void GLAPIENTRY
+_mesa_TexGeni( GLenum coord, GLenum pname, GLint param )
+{
+   _mesa_TexGeniv( coord, pname, &param );
+}
+
+
+
+void GLAPIENTRY
+_mesa_GetTexGendv( GLenum coord, GLenum pname, GLdouble *params )
+{
+   struct gl_texture_unit *texUnit;
+   struct gl_texgen *texgen;
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexGendv(current unit)");
+      return;
+   }
+
+   texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+
+   texgen = get_texgen(texUnit, coord);
+   if (!texgen) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexGendv(coord)");
+      return;
+   }
+
+   switch (pname) {
+   case GL_TEXTURE_GEN_MODE:
+      params[0] = ENUM_TO_DOUBLE(texgen->Mode);
+      break;
+   case GL_OBJECT_PLANE:
+      COPY_4V(params, texgen->ObjectPlane);
+      break;
+   case GL_EYE_PLANE:
+      COPY_4V(params, texgen->EyePlane);
+      break;
+   default:
+      _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGendv(pname)" );
+   }
+}
+
+
+
+void GLAPIENTRY
+_mesa_GetTexGenfv( GLenum coord, GLenum pname, GLfloat *params )
+{
+   struct gl_texture_unit *texUnit;
+   struct gl_texgen *texgen;
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexGenfv(current unit)");
+      return;
+   }
+
+   texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+
+   texgen = get_texgen(texUnit, coord);
+   if (!texgen) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexGenfv(coord)");
+      return;
+   }
+
+   switch (pname) {
+   case GL_TEXTURE_GEN_MODE:
+      params[0] = ENUM_TO_FLOAT(texgen->Mode);
+      break;
+   case GL_OBJECT_PLANE:
+      COPY_4V(params, texgen->ObjectPlane);
+      break;
+   case GL_EYE_PLANE:
+      COPY_4V(params, texgen->EyePlane);
+      break;
+   default:
+      _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(pname)" );
+   }
+}
+
+
+
+void GLAPIENTRY
+_mesa_GetTexGeniv( GLenum coord, GLenum pname, GLint *params )
+{
+   struct gl_texture_unit *texUnit;
+   struct gl_texgen *texgen;
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexGeniv(current unit)");
+      return;
+   }
+
+   texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+
+   texgen = get_texgen(texUnit, coord);
+   if (!texgen) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexGeniv(coord)");
+      return;
+   }
+
+   switch (pname) {
+   case GL_TEXTURE_GEN_MODE:
+      params[0] = texgen->Mode;
+      break;
+   case GL_OBJECT_PLANE:
+      params[0] = (GLint) texgen->ObjectPlane[0];
+      params[1] = (GLint) texgen->ObjectPlane[1];
+      params[2] = (GLint) texgen->ObjectPlane[2];
+      params[3] = (GLint) texgen->ObjectPlane[3];
+      break;
+   case GL_EYE_PLANE:
+      params[0] = (GLint) texgen->EyePlane[0];
+      params[1] = (GLint) texgen->EyePlane[1];
+      params[2] = (GLint) texgen->EyePlane[2];
+      params[3] = (GLint) texgen->EyePlane[3];
+      break;
+   default:
+      _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(pname)" );
+   }
+}
+
+