示例#1
0
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 = _mesa_get_current_tex_unit(ctx);

   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 = _mesa_get_current_tex_unit(ctx);

   texgen = get_texgen(ctx, 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:
      if (ctx->API != API_OPENGL) {
         _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(param)" );
         return;
      }
      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:
      if (ctx->API != API_OPENGL) {
         _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(param)" );
         return;
      }
      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)" );
   }
}
示例#3
0
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 = _mesa_get_current_tex_unit(ctx);

   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 );
}