gecko-dev/dom/canvas/WebGLExtensionCompressedTextureS3TC.cpp
2017-08-15 16:52:35 -07:00

60 lines
1.9 KiB
C++

/* 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 {
WebGLExtensionCompressedTextureS3TC::WebGLExtensionCompressedTextureS3TC(WebGLContext* webgl)
: WebGLExtensionBase(webgl)
{
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_RGB_S3TC_DXT1_EXT));
fnAdd(FOO(COMPRESSED_RGBA_S3TC_DXT1_EXT));
fnAdd(FOO(COMPRESSED_RGBA_S3TC_DXT3_EXT));
fnAdd(FOO(COMPRESSED_RGBA_S3TC_DXT5_EXT));
#undef FOO
}
WebGLExtensionCompressedTextureS3TC::~WebGLExtensionCompressedTextureS3TC()
{
}
bool
WebGLExtensionCompressedTextureS3TC::IsSupported(const WebGLContext* webgl)
{
gl::GLContext* gl = webgl->GL();
if (gl->IsExtensionSupported(gl::GLContext::EXT_texture_compression_s3tc))
return true;
return gl->IsExtensionSupported(gl::GLContext::EXT_texture_compression_dxt1) &&
gl->IsExtensionSupported(gl::GLContext::ANGLE_texture_compression_dxt3) &&
gl->IsExtensionSupported(gl::GLContext::ANGLE_texture_compression_dxt5);
}
IMPL_WEBGL_EXTENSION_GOOP(WebGLExtensionCompressedTextureS3TC, WEBGL_compressed_texture_s3tc)
} // namespace mozilla