dom/canvas/WebGLUniformInfo.h

   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 #ifndef WEBGLUNIFORMINFO_H_
   7 #define WEBGLUNIFORMINFO_H_
   8
   9 #include "angle/ShaderLang.h"
  10
  11 namespace mozilla {
  12
  13 struct WebGLUniformInfo {
  14     uint32_t arraySize;
  15     bool isArray;
  16     ShDataType type;
  17
  18     WebGLUniformInfo(uint32_t s = 0, bool a = false, ShDataType t = SH_NONE)
  19         : arraySize(s), isArray(a), type(t) {}
  20
  21     int ElementSize() const {
  22         switch (type) {
  23             case SH_INT:
  24             case SH_FLOAT:
  25             case SH_BOOL:
  26             case SH_SAMPLER_2D:
  27             case SH_SAMPLER_CUBE:
  28                 return 1;
  29             case SH_INT_VEC2:
  30             case SH_FLOAT_VEC2:
  31             case SH_BOOL_VEC2:
  32                 return 2;
  33             case SH_INT_VEC3:
  34             case SH_FLOAT_VEC3:
  35             case SH_BOOL_VEC3:
  36                 return 3;
  37             case SH_INT_VEC4:
  38             case SH_FLOAT_VEC4:
  39             case SH_BOOL_VEC4:
  40             case SH_FLOAT_MAT2:
  41                 return 4;
  42             case SH_FLOAT_MAT3:
  43                 return 9;
  44             case SH_FLOAT_MAT4:
  45                 return 16;
  46             default:
  47                 MOZ_ASSERT(false); // should never get here
  48                 return 0;
  49         }
  50     }
  51 };
  52
  53 } // namespace mozilla
  54
  55 #endif