src/mesa/vbo/vbo_noop.c

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
   5  * Copyright (C) 2011  VMware, Inc.  All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  23  * OTHER DEALINGS IN THE SOFTWARE.
  24  */
  25
  26
  27 /**
  28  * GLvertexformat no-op functions.  Used in out-of-memory situations.
  29  */
  30
  31
  32 #include "main/glheader.h"
  33 #include "main/context.h"
  34 #include "main/dispatch.h"
  35 #include "main/dlist.h"
  36 #include "main/eval.h"
  37 #include "vbo/vbo_noop.h"
  38 #include "vbo_attrib.h"
  39
  40 static void GLAPIENTRY
  41 _mesa_noop_Materialfv(GLenum face, GLenum pname, const GLfloat * params)
  42 {
  43 }
  44
  45 static void GLAPIENTRY
  46 _mesa_noop_EvalCoord1f(GLfloat a)
  47 {
  48 }
  49
  50 static void GLAPIENTRY
  51 _mesa_noop_EvalCoord1fv(const GLfloat * v)
  52 {
  53 }
  54
  55 static void GLAPIENTRY
  56 _mesa_noop_EvalCoord2f(GLfloat a, GLfloat b)
  57 {
  58 }
  59
  60 static void GLAPIENTRY
  61 _mesa_noop_EvalCoord2fv(const GLfloat * v)
  62 {
  63 }
  64
  65 static void GLAPIENTRY
  66 _mesa_noop_EvalPoint1(GLint a)
  67 {
  68 }
  69
  70 static void GLAPIENTRY
  71 _mesa_noop_EvalPoint2(GLint a, GLint b)
  72 {
  73 }
  74
  75 static void GLAPIENTRY
  76 _mesa_noop_ArrayElement(GLint elem)
  77 {
  78 }
  79
  80
  81 static void GLAPIENTRY
  82 _mesa_noop_Begin(GLenum mode)
  83 {
  84 }
  85
  86 static void GLAPIENTRY
  87 _mesa_noop_End(void)
  88 {
  89 }
  90
  91 static void GLAPIENTRY
  92 _mesa_noop_PrimitiveRestartNV(void)
  93 {
  94 }
  95
  96 /**
  97  * If index=0, does glVertexAttrib*() alias glVertex() to emit a vertex?
  98  * It depends on a few things, including whether we're inside or outside
  99  * of glBegin/glEnd.
 100  */
 101 static inline bool
 102 is_vertex_position(const struct gl_context *ctx, GLuint index)
 103 {
 104    return false; /* it doesn't matter for noop */
 105 }
 106
 107 #define ATTR_UNION(A, N, T, C, V0, V1, V2, V3) do { (void)ctx; (void)(A); } while(0)
 108 #define ERROR(err) _mesa_error(ctx, err, __func__)
 109 #define TAG(x) _mesa_noop_##x
 110
 111 #include "vbo_attrib_tmp.h"
 112
 113
 114 /**
 115  * Build a vertexformat of functions that are no-ops.
 116  * These are used in out-of-memory situations when we have no VBO
 117  * to put the vertex data into.
 118  */
 119 void
 120 _mesa_noop_vtxfmt_init(struct gl_context *ctx, GLvertexformat * vfmt)
 121 {
 122 #define NAME_AE(x) _mesa_noop_##x
 123 #define NAME_CALLLIST(x) _mesa_##x
 124 #define NAME(x) _mesa_noop_##x
 125 #define NAME_ES(x) _mesa_noop_##x##ARB
 126
 127 #include "vbo_init_tmp.h"
 128 }
 129
 130
 131 /**
 132  * Is the given dispatch table using the no-op functions?
 133  */
 134 GLboolean
 135 _mesa_using_noop_vtxfmt(const struct _glapi_table *dispatch)
 136 {
 137    return GET_Begin((struct _glapi_table *) dispatch) == _mesa_noop_Begin;
 138 }