tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

WebGLSampler.cpp (3932B)

      1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      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 "WebGLSampler.h"
      7 
      8 #include "GLContext.h"
      9 #include "WebGLContext.h"
     10 #include "mozilla/dom/WebGL2RenderingContextBinding.h"
     11 
     12 namespace mozilla {
     13 
     14 WebGLSampler::WebGLSampler(WebGLContext* const webgl)
     15    : WebGLContextBoundObject(webgl), mGLName([&]() {
     16        GLuint ret = 0;
     17        webgl->gl->fGenSamplers(1, &ret);
     18        return ret;
     19      }()) {}
     20 
     21 WebGLSampler::~WebGLSampler() {
     22  if (!mContext) return;
     23  mContext->gl->fDeleteSamplers(1, &mGLName);
     24 }
     25 
     26 static bool ValidateSamplerParameterParams(WebGLContext* webgl, GLenum pname,
     27                                           const FloatOrInt& param) {
     28  const auto& paramInt = param.i;
     29  bool pnameValid = true;
     30  switch (pname) {
     31    case LOCAL_GL_TEXTURE_MIN_FILTER:
     32      switch (paramInt) {
     33        case LOCAL_GL_NEAREST:
     34        case LOCAL_GL_LINEAR:
     35        case LOCAL_GL_NEAREST_MIPMAP_NEAREST:
     36        case LOCAL_GL_NEAREST_MIPMAP_LINEAR:
     37        case LOCAL_GL_LINEAR_MIPMAP_NEAREST:
     38        case LOCAL_GL_LINEAR_MIPMAP_LINEAR:
     39          return true;
     40 
     41        default:
     42          break;
     43      }
     44      break;
     45 
     46    case LOCAL_GL_TEXTURE_MAG_FILTER:
     47      switch (paramInt) {
     48        case LOCAL_GL_NEAREST:
     49        case LOCAL_GL_LINEAR:
     50          return true;
     51 
     52        default:
     53          break;
     54      }
     55      break;
     56 
     57    case LOCAL_GL_TEXTURE_WRAP_S:
     58    case LOCAL_GL_TEXTURE_WRAP_T:
     59    case LOCAL_GL_TEXTURE_WRAP_R:
     60      switch (paramInt) {
     61        case LOCAL_GL_CLAMP_TO_EDGE:
     62        case LOCAL_GL_REPEAT:
     63        case LOCAL_GL_MIRRORED_REPEAT:
     64          return true;
     65 
     66        default:
     67          break;
     68      }
     69      break;
     70 
     71    case LOCAL_GL_TEXTURE_MIN_LOD:
     72    case LOCAL_GL_TEXTURE_MAX_LOD:
     73      return true;
     74 
     75    case LOCAL_GL_TEXTURE_COMPARE_MODE:
     76      switch (paramInt) {
     77        case LOCAL_GL_NONE:
     78        case LOCAL_GL_COMPARE_REF_TO_TEXTURE:
     79          return true;
     80 
     81        default:
     82          break;
     83      }
     84      break;
     85 
     86    case LOCAL_GL_TEXTURE_COMPARE_FUNC:
     87      switch (paramInt) {
     88        case LOCAL_GL_LEQUAL:
     89        case LOCAL_GL_GEQUAL:
     90        case LOCAL_GL_LESS:
     91        case LOCAL_GL_GREATER:
     92        case LOCAL_GL_EQUAL:
     93        case LOCAL_GL_NOTEQUAL:
     94        case LOCAL_GL_ALWAYS:
     95        case LOCAL_GL_NEVER:
     96          return true;
     97 
     98        default:
     99          break;
    100      }
    101      break;
    102 
    103    case LOCAL_GL_TEXTURE_MAX_ANISOTROPY:
    104      if (webgl->IsExtensionEnabled(
    105              WebGLExtensionID::EXT_texture_filter_anisotropic)) {
    106        return true;
    107      }
    108      pnameValid = false;
    109      break;
    110 
    111    default:
    112      pnameValid = false;
    113      break;
    114  }
    115 
    116  if (!pnameValid) {
    117    webgl->ErrorInvalidEnumInfo("pname", pname);
    118    return false;
    119  }
    120 
    121  webgl->ErrorInvalidEnumInfo("param", paramInt);
    122  return false;
    123 }
    124 
    125 void WebGLSampler::SamplerParameter(GLenum pname, const FloatOrInt& param) {
    126  if (!ValidateSamplerParameterParams(mContext, pname, param)) return;
    127 
    128  bool invalidate = true;
    129  switch (pname) {
    130    case LOCAL_GL_TEXTURE_MIN_FILTER:
    131      mState.minFilter = param.i;
    132      break;
    133 
    134    case LOCAL_GL_TEXTURE_MAG_FILTER:
    135      mState.magFilter = param.i;
    136      break;
    137 
    138    case LOCAL_GL_TEXTURE_WRAP_S:
    139      mState.wrapS = param.i;
    140      break;
    141 
    142    case LOCAL_GL_TEXTURE_WRAP_T:
    143      mState.wrapT = param.i;
    144      break;
    145 
    146    case LOCAL_GL_TEXTURE_COMPARE_MODE:
    147      mState.compareMode = param.i;
    148      break;
    149 
    150    default:
    151      invalidate = false;
    152      break;
    153  }
    154 
    155  if (invalidate) {
    156    InvalidateCaches();
    157  }
    158 
    159  ////
    160 
    161  if (param.isFloat) {
    162    mContext->gl->fSamplerParameterf(mGLName, pname, param.f);
    163  } else {
    164    mContext->gl->fSamplerParameteri(mGLName, pname, param.i);
    165  }
    166 }
    167 
    168 }  // namespace mozilla