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