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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/WebGL2RenderingContextBinding.h"
#include "WebGLContext.h"
#include "WebGLFormats.h"

namespace mozilla {

WebGLExtensionEXTColorBufferFloat::WebGLExtensionEXTColorBufferFloat(
    WebGLContext* webgl)
    : WebGLExtensionBase(webgl) {
  MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");

  auto& fua = webgl->mFormatUsage;

  auto fnUpdateUsage = [&fua](GLenum sizedFormat,
                              webgl::EffectiveFormat effFormat) {
    auto usage = fua->EditUsage(effFormat);
    usage->SetRenderable();
    fua->AllowRBFormat(sizedFormat, usage);
  };

#define FOO(x) fnUpdateUsage(LOCAL_GL_##x, webgl::EffectiveFormat::x)

  FOO(R16F);
  FOO(RG16F);
  FOO(RGBA16F);

  FOO(R32F);
  FOO(RG32F);
  FOO(RGBA32F);

  FOO(R11F_G11F_B10F);

#undef FOO
}

/*static*/ bool WebGLExtensionEXTColorBufferFloat::IsSupported(
    const WebGLContext* webgl) {
  const gl::GLContext* gl = webgl->GL();
  return gl->IsSupported(gl::GLFeature::EXT_color_buffer_float);
}

IMPL_WEBGL_EXTENSION_GOOP(WebGLExtensionEXTColorBufferFloat,
                          EXT_color_buffer_float)

}  // namespace mozilla