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 "GLDefs.h"
  10 #include "angle/ShaderLang.h"
  11
  12 namespace mozilla {
  13
  14 struct WebGLUniformInfo {
  15     uint32_t arraySize;
  16     bool isArray;
  17     sh::GLenum type;
  18
  19     explicit WebGLUniformInfo(uint32_t s = 0, bool a = false, sh::GLenum t = LOCAL_GL_NONE)
  20         : arraySize(s), isArray(a), type(t) {}
  21
  22     int ElementSize() const {
  23         switch (type) {
  24             case LOCAL_GL_FLOAT:
  25             case LOCAL_GL_INT:
  26             case LOCAL_GL_UNSIGNED_INT:
  27             case LOCAL_GL_BOOL:
  28             case LOCAL_GL_SAMPLER_2D:
  29             case LOCAL_GL_SAMPLER_3D:
  30             case LOCAL_GL_SAMPLER_CUBE:
  31             case LOCAL_GL_SAMPLER_2D_SHADOW:
  32             case LOCAL_GL_SAMPLER_2D_ARRAY:
  33             case LOCAL_GL_SAMPLER_2D_ARRAY_SHADOW:
  34             case LOCAL_GL_SAMPLER_CUBE_SHADOW:
  35             case LOCAL_GL_INT_SAMPLER_2D:
  36             case LOCAL_GL_INT_SAMPLER_3D:
  37             case LOCAL_GL_INT_SAMPLER_CUBE:
  38             case LOCAL_GL_INT_SAMPLER_2D_ARRAY:
  39             case LOCAL_GL_UNSIGNED_INT_SAMPLER_2D:
  40             case LOCAL_GL_UNSIGNED_INT_SAMPLER_3D:
  41             case LOCAL_GL_UNSIGNED_INT_SAMPLER_CUBE:
  42             case LOCAL_GL_UNSIGNED_INT_SAMPLER_2D_ARRAY:
  43                 return 1;
  44             case LOCAL_GL_FLOAT_VEC2:
  45             case LOCAL_GL_INT_VEC2:
  46             case LOCAL_GL_UNSIGNED_INT_VEC2:
  47             case LOCAL_GL_BOOL_VEC2:
  48                 return 2;
  49             case LOCAL_GL_FLOAT_VEC3:
  50             case LOCAL_GL_INT_VEC3:
  51             case LOCAL_GL_UNSIGNED_INT_VEC3:
  52             case LOCAL_GL_BOOL_VEC3:
  53                 return 3;
  54             case LOCAL_GL_FLOAT_VEC4:
  55             case LOCAL_GL_INT_VEC4:
  56             case LOCAL_GL_UNSIGNED_INT_VEC4:
  57             case LOCAL_GL_BOOL_VEC4:
  58             case LOCAL_GL_FLOAT_MAT2:
  59                 return 4;
  60             case LOCAL_GL_FLOAT_MAT2x3:
  61             case LOCAL_GL_FLOAT_MAT3x2:
  62                 return 6;
  63             case LOCAL_GL_FLOAT_MAT2x4:
  64             case LOCAL_GL_FLOAT_MAT4x2:
  65                 return 8;
  66             case LOCAL_GL_FLOAT_MAT3:
  67                 return 9;
  68             case LOCAL_GL_FLOAT_MAT3x4:
  69             case LOCAL_GL_FLOAT_MAT4x3:
  70                 return 12;
  71             case LOCAL_GL_FLOAT_MAT4:
  72                 return 16;
  73             default:
  74                 MOZ_ASSERT(false); // should never get here
  75                 return 0;
  76         }
  77     }
  78 };
  79
  80 } // namespace mozilla
  81
  82 #endif