Line data    Source code

       1             : /* This Source Code Form is subject to the terms of the Mozilla Public
       2             :  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
       3             :  * You can obtain one at http://mozilla.org/MPL/2.0/. */
       4             : 
       5             : #include "WebGLExtensions.h"
       6             : 
       7             : #include "GLContext.h"
       8             : #include "mozilla/dom/WebGLRenderingContextBinding.h"
       9             : #include "WebGLContext.h"
      10             : 
      11             : #ifdef FOO
      12             : #error FOO is already defined! We use FOO() macros to keep things succinct in this file.
      13             : #endif
      14             : 
      15             : namespace mozilla {
      16             : 
      17           0 : WebGLExtensionCompressedTextureES3::WebGLExtensionCompressedTextureES3(WebGLContext* webgl)
      18           0 :     : WebGLExtensionBase(webgl)
      19             : {
      20             :     // GLES 3.0.4, p147, table 3.19
      21             :     // GLES 3.0.4, p286+, $C.1 "ETC Compressed Texture Image Formats"
      22             :     // Note that all compressed texture formats are filterable:
      23             :     // GLES 3.0.4 p161:
      24             :     // "[A] texture is complete unless any of the following conditions hold true:
      25             :     //  [...]
      26             :     //  * The effective internal format specified for the texture arrays is a sized
      27             :     //    internal color format that is not texture-filterable (see table 3.13) and [the
      28             :     //    mag filter requires filtering]."
      29             :     // Compressed formats are not sized internal color formats, and indeed they are not
      30             :     // listed in table 3.13.
      31             : 
      32           0 :     RefPtr<WebGLContext> webgl_ = webgl; // Bug 1201275
      33           0 :     const auto fnAdd = [&webgl_](GLenum sizedFormat, webgl::EffectiveFormat effFormat) {
      34           0 :         auto& fua = webgl_->mFormatUsage;
      35             : 
      36           0 :         auto usage = fua->EditUsage(effFormat);
      37           0 :         usage->isFilterable = true;
      38           0 :         fua->AllowSizedTexFormat(sizedFormat, usage);
      39             : 
      40           0 :         webgl_->mCompressedTextureFormats.AppendElement(sizedFormat);
      41           0 :     };
      42             : 
      43             : #define FOO(x) LOCAL_GL_ ## x, webgl::EffectiveFormat::x
      44             : 
      45           0 :     fnAdd(FOO(COMPRESSED_R11_EAC));
      46           0 :     fnAdd(FOO(COMPRESSED_SIGNED_R11_EAC));
      47           0 :     fnAdd(FOO(COMPRESSED_RG11_EAC));
      48           0 :     fnAdd(FOO(COMPRESSED_SIGNED_RG11_EAC));
      49           0 :     fnAdd(FOO(COMPRESSED_RGB8_ETC2));
      50           0 :     fnAdd(FOO(COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2));
      51           0 :     fnAdd(FOO(COMPRESSED_RGBA8_ETC2_EAC));
      52             : 
      53             :     // sRGB support is manadatory in GL 4.3 and GL ES 3.0, which are the only
      54             :     // versions to support ETC2.
      55           0 :     fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ETC2_EAC));
      56           0 :     fnAdd(FOO(COMPRESSED_SRGB8_ETC2));
      57           0 :     fnAdd(FOO(COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2));
      58             : 
      59             : #undef FOO
      60           0 : }
      61             : 
      62           0 : WebGLExtensionCompressedTextureES3::~WebGLExtensionCompressedTextureES3()
      63             : {
      64           0 : }
      65             : 
      66           0 : IMPL_WEBGL_EXTENSION_GOOP(WebGLExtensionCompressedTextureES3, WEBGL_compressed_texture_etc)
      67             : 
      68             : } // namespace mozilla