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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 {
WebGLExtensionDepthTexture::WebGLExtensionDepthTexture(
WebGLContext* const webgl)
: WebGLExtensionBase(webgl) {
auto& fua = webgl->mFormatUsage;
const auto fnAdd = [&fua](webgl::EffectiveFormat effFormat,
GLenum unpackFormat, GLenum unpackType) {
auto usage = fua->EditUsage(effFormat);
MOZ_ASSERT(usage->isFilterable);
MOZ_ASSERT(usage->IsRenderable());
const webgl::PackingInfo pi = {unpackFormat, unpackType};
const webgl::DriverUnpackInfo dui = {unpackFormat, unpackFormat,
unpackType};
fua->AddTexUnpack(usage, pi, dui);
fua->AllowUnsizedTexFormat(pi, usage);
};
fnAdd(webgl::EffectiveFormat::DEPTH_COMPONENT16, LOCAL_GL_DEPTH_COMPONENT,
LOCAL_GL_UNSIGNED_SHORT);
fnAdd(webgl::EffectiveFormat::DEPTH_COMPONENT24, LOCAL_GL_DEPTH_COMPONENT,
LOCAL_GL_UNSIGNED_INT);
fnAdd(webgl::EffectiveFormat::DEPTH24_STENCIL8, LOCAL_GL_DEPTH_STENCIL,
LOCAL_GL_UNSIGNED_INT_24_8);
}
bool WebGLExtensionDepthTexture::IsSupported(const WebGLContext* const webgl) {
if (webgl->IsWebGL2()) return false;
// WEBGL_depth_texture supports DEPTH_STENCIL textures
const auto& gl = webgl->gl;
if (!gl->IsSupported(gl::GLFeature::packed_depth_stencil)) return false;
return gl->IsSupported(gl::GLFeature::depth_texture) ||
gl->IsExtensionSupported(gl::GLContext::ANGLE_depth_texture);
}
} // namespace mozilla
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