forked from mirrors/gecko-dev
68 lines
2.4 KiB
C++
68 lines
2.4 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "WebGLExtensions.h"
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#include "GLContext.h"
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#include "mozilla/dom/WebGLRenderingContextBinding.h"
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#include "WebGLContext.h"
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#ifdef FOO
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#error FOO is already defined! We use FOO() macros to keep things succinct in this file.
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#endif
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namespace mozilla {
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WebGLExtensionCompressedTextureES3::WebGLExtensionCompressedTextureES3(WebGLContext* webgl)
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: WebGLExtensionBase(webgl)
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{
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// GLES 3.0.4, p147, table 3.19
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// GLES 3.0.4, p286+, $C.1 "ETC Compressed Texture Image Formats"
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// Note that all compressed texture formats are filterable:
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// GLES 3.0.4 p161:
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// "[A] texture is complete unless any of the following conditions hold true:
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// [...]
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// * The effective internal format specified for the texture arrays is a sized
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// internal color format that is not texture-filterable (see table 3.13) and [the
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// mag filter requires filtering]."
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// Compressed formats are not sized internal color formats, and indeed they are not
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// listed in table 3.13.
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RefPtr<WebGLContext> webgl_ = webgl; // Bug 1201275
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const auto fnAdd = [&webgl_](GLenum sizedFormat, webgl::EffectiveFormat effFormat) {
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auto& fua = webgl_->mFormatUsage;
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auto usage = fua->EditUsage(effFormat);
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usage->isFilterable = true;
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fua->AllowSizedTexFormat(sizedFormat, usage);
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webgl_->mCompressedTextureFormats.AppendElement(sizedFormat);
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};
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#define FOO(x) LOCAL_GL_ ## x, webgl::EffectiveFormat::x
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fnAdd(FOO(COMPRESSED_R11_EAC));
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fnAdd(FOO(COMPRESSED_SIGNED_R11_EAC));
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fnAdd(FOO(COMPRESSED_RG11_EAC));
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fnAdd(FOO(COMPRESSED_SIGNED_RG11_EAC));
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fnAdd(FOO(COMPRESSED_RGB8_ETC2));
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fnAdd(FOO(COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2));
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fnAdd(FOO(COMPRESSED_RGBA8_ETC2_EAC));
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// sRGB support is manadatory in GL 4.3 and GL ES 3.0, which are the only
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// versions to support ETC2.
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fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ETC2_EAC));
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fnAdd(FOO(COMPRESSED_SRGB8_ETC2));
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fnAdd(FOO(COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2));
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#undef FOO
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}
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WebGLExtensionCompressedTextureES3::~WebGLExtensionCompressedTextureES3()
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{
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}
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IMPL_WEBGL_EXTENSION_GOOP(WebGLExtensionCompressedTextureES3, WEBGL_compressed_texture_etc)
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} // namespace mozilla
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