/* 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"

namespace mozilla {

WebGLExtensionCompressedTextureASTC::WebGLExtensionCompressedTextureASTC(

    WebGLContext* webgl)

    : WebGLExtensionBase(webgl) {

  MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");

  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_RGBA_ASTC_4x4_KHR));

  fnAdd(FOO(COMPRESSED_RGBA_ASTC_5x4_KHR));

  fnAdd(FOO(COMPRESSED_RGBA_ASTC_5x5_KHR));

  fnAdd(FOO(COMPRESSED_RGBA_ASTC_6x5_KHR));

  fnAdd(FOO(COMPRESSED_RGBA_ASTC_6x6_KHR));

  fnAdd(FOO(COMPRESSED_RGBA_ASTC_8x5_KHR));

  fnAdd(FOO(COMPRESSED_RGBA_ASTC_8x6_KHR));

  fnAdd(FOO(COMPRESSED_RGBA_ASTC_8x8_KHR));

  fnAdd(FOO(COMPRESSED_RGBA_ASTC_10x5_KHR));

  fnAdd(FOO(COMPRESSED_RGBA_ASTC_10x6_KHR));

  fnAdd(FOO(COMPRESSED_RGBA_ASTC_10x8_KHR));

  fnAdd(FOO(COMPRESSED_RGBA_ASTC_10x10_KHR));

  fnAdd(FOO(COMPRESSED_RGBA_ASTC_12x10_KHR));

  fnAdd(FOO(COMPRESSED_RGBA_ASTC_12x12_KHR));

  fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR));

  fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR));

  fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR));

  fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR));

  fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR));

  fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR));

  fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR));

  fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR));

  fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR));

  fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR));

  fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR));

  fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR));

  fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR));

  fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR));

#undef FOO

}

WebGLExtensionCompressedTextureASTC::~WebGLExtensionCompressedTextureASTC() {}

void WebGLExtensionCompressedTextureASTC::GetSupportedProfiles(

    dom::Nullable<nsTArray<nsString> >& retval) const {

  retval.SetNull();

  if (mIsLost) {

    if (mContext) {

      mContext->ErrorInvalidOperation("%s: Extension is lost.",

                                      "drawElementsInstancedANGLE");

    }

    return;

  }

  nsTArray<nsString>& arr = retval.SetValue();

  arr.AppendElement(NS_LITERAL_STRING("ldr"));

  if (mContext->gl->IsExtensionSupported(

          gl::GLContext::KHR_texture_compression_astc_hdr)) {

    arr.AppendElement(NS_LITERAL_STRING("hdr"));

  }

}

bool WebGLExtensionCompressedTextureASTC::IsSupported(

    const WebGLContext* webgl) {

  gl::GLContext* gl = webgl->GL();

  return gl->IsExtensionSupported(

      gl::GLContext::KHR_texture_compression_astc_ldr);

}

IMPL_WEBGL_EXTENSION_GOOP(WebGLExtensionCompressedTextureASTC,

                          WEBGL_compressed_texture_astc)

}  // namespace mozilla