dom/canvas/WebGL1ContextBuffers.cpp

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "WebGL1Context.h"
   7 #include "WebGLBuffer.h"
   8 #include "GLContext.h"
   9
  10 using namespace mozilla;
  11 using namespace mozilla::dom;
  12
  13 // -------------------------------------------------------------------------
  14 // Buffer objects
  15
  16 /** Target validation for BindBuffer, etc */
  17 bool
  18 WebGL1Context::ValidateBufferTarget(GLenum target, const char* info)
  19 {
  20     switch (target) {
  21     case LOCAL_GL_ARRAY_BUFFER:
  22     case LOCAL_GL_ELEMENT_ARRAY_BUFFER:
  23         return true;
  24
  25     default:
  26         ErrorInvalidEnumInfo(info, target);
  27         return false;
  28     }
  29 }
  30
  31 bool
  32 WebGL1Context::ValidateBufferIndexedTarget(GLenum target, const char* info)
  33 {
  34     ErrorInvalidEnumInfo(info, target);
  35     return false;
  36 }
  37
  38 /** Buffer and Target validation for BindBuffer */
  39 bool
  40 WebGL1Context::ValidateBufferForTarget(GLenum target, WebGLBuffer* buffer,
  41                                        const char* info)
  42 {
  43     if (!buffer)
  44         return true;
  45
  46     if (buffer->HasEverBeenBound() && target != buffer->Target()) {
  47         ErrorInvalidOperation("%s: buffer already bound to a different target", info);
  48         return false;
  49     }
  50
  51     return true;
  52 }