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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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"
#include "WebGLFormats.h"
namespace mozilla {
WebGLExtensionSRGB::WebGLExtensionSRGB(WebGLContext* webgl)
: WebGLExtensionBase(webgl)
{
MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
gl::GLContext* gl = webgl->GL();
if (!gl->IsGLES()) {
// Desktop OpenGL requires the following to be enabled in order to
// support sRGB operations on framebuffers.
gl->MakeCurrent();
gl->fEnable(LOCAL_GL_FRAMEBUFFER_SRGB_EXT);
}
auto& fua = webgl->mFormatUsage;
RefPtr<gl::GLContext> gl_ = gl; // Bug 1201275
const auto fnAdd = [&fua, &gl_](webgl::EffectiveFormat effFormat, GLenum format,
GLenum desktopUnpackFormat)
{
auto usage = fua->EditUsage(effFormat);
usage->isFilterable = true;
webgl::DriverUnpackInfo dui = {format, format, LOCAL_GL_UNSIGNED_BYTE};
const auto pi = dui.ToPacking();
if (!gl_->IsGLES())
dui.unpackFormat = desktopUnpackFormat;
fua->AddTexUnpack(usage, pi, dui);
fua->AllowUnsizedTexFormat(pi, usage);
};
fnAdd(webgl::EffectiveFormat::SRGB8, LOCAL_GL_SRGB, LOCAL_GL_RGB);
fnAdd(webgl::EffectiveFormat::SRGB8_ALPHA8, LOCAL_GL_SRGB_ALPHA, LOCAL_GL_RGBA);
auto usage = fua->EditUsage(webgl::EffectiveFormat::SRGB8_ALPHA8);
usage->SetRenderable();
fua->AllowRBFormat(LOCAL_GL_SRGB8_ALPHA8, usage);
}
WebGLExtensionSRGB::~WebGLExtensionSRGB()
{
}
bool
WebGLExtensionSRGB::IsSupported(const WebGLContext* webgl)
{
gl::GLContext* gl = webgl->GL();
return gl->IsSupported(gl::GLFeature::sRGB_framebuffer) &&
gl->IsSupported(gl::GLFeature::sRGB_texture);
}
IMPL_WEBGL_EXTENSION_GOOP(WebGLExtensionSRGB, EXT_sRGB)
} // namespace mozilla
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