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 #ifdef _WIN32
  32 #define NOGDI
  33 #endif
  34
  35 #include "main/glheader.h"
  36 #include "main/context.h"
  37 #include "main/dispatch.h"
  38 #include "main/dlist.h"
  39 #include "main/eval.h"
  40 #include "vbo/vbo_noop.h"
  41 #include "vbo_attrib.h"
  42
  43 static void GLAPIENTRY
  44 _mesa_noop_Materialfv(GLenum face, GLenum pname, const GLfloat * params)
  45 {
  46 }
  47
  48 static void GLAPIENTRY
  49 _mesa_noop_EvalCoord1f(GLfloat a)
  50 {
  51 }
  52
  53 static void GLAPIENTRY
  54 _mesa_noop_EvalCoord1fv(const GLfloat * v)
  55 {
  56 }
  57
  58 static void GLAPIENTRY
  59 _mesa_noop_EvalCoord2f(GLfloat a, GLfloat b)
  60 {
  61 }
  62
  63 static void GLAPIENTRY
  64 _mesa_noop_EvalCoord2fv(const GLfloat * v)
  65 {
  66 }
  67
  68 static void GLAPIENTRY
  69 _mesa_noop_EvalPoint1(GLint a)
  70 {
  71 }
  72
  73 static void GLAPIENTRY
  74 _mesa_noop_EvalPoint2(GLint a, GLint b)
  75 {
  76 }
  77
  78 static void GLAPIENTRY
  79 _mesa_noop_ArrayElement(GLint elem)
  80 {
  81 }
  82
  83
  84 static void GLAPIENTRY
  85 _mesa_noop_Begin(GLenum mode)
  86 {
  87 }
  88
  89 static void GLAPIENTRY
  90 _mesa_noop_End(void)
  91 {
  92 }
  93
  94 static void GLAPIENTRY
  95 _mesa_noop_PrimitiveRestartNV(void)
  96 {
  97 }
  98
  99 /**
 100  * If index=0, does glVertexAttrib*() alias glVertex() to emit a vertex?
 101  * It depends on a few things, including whether we're inside or outside
 102  * of glBegin/glEnd.
 103  */
 104 static inline bool
 105 is_vertex_position(const struct gl_context *ctx, GLuint index)
 106 {
 107    return false; /* it doesn't matter for noop */
 108 }
 109
 110 #define ATTR_UNION(A, N, T, C, V0, V1, V2, V3) do { (void)ctx; (void)(A); } while(0)
 111 #define ERROR(err) _mesa_error(ctx, err, __func__)
 112 #define TAG(x) _mesa_noop_##x
 113
 114 #include "vbo_attrib_tmp.h"
 115
 116
 117 /**
 118  * Build a vertexformat of functions that are no-ops.
 119  * These are used in out-of-memory situations when we have no VBO
 120  * to put the vertex data into.
 121  */
 122 void
 123 _mesa_noop_vtxfmt_init(struct gl_context *ctx, GLvertexformat * vfmt)
 124 {
 125 #define NAME_AE(x) _mesa_noop_##x
 126 #define NAME_CALLLIST(x) _mesa_##x
 127 #define NAME(x) _mesa_noop_##x
 128 #define NAME_ES(x) _mesa_noop_##x##ARB
 129
 130 #include "vbo_init_tmp.h"
 131 }
 132
 133
 134 /**
 135  * Is the given dispatch table using the no-op functions?
 136  */
 137 GLboolean
 138 _mesa_using_noop_vtxfmt(const struct _glapi_table *dispatch)
 139 {
 140    return GET_Begin((struct _glapi_table *) dispatch) == _mesa_noop_Begin;
 141 }