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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 "mozilla/StaticPrefs_webgl.h"
#include "WebGLContext.h"
namespace mozilla {
WebGLExtensionBlendMinMax::WebGLExtensionBlendMinMax(WebGLContext* webgl)
: WebGLExtensionBase(webgl) {
MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
}
bool WebGLExtensionBlendMinMax::IsSupported(const WebGLContext* webgl) {
if (webgl->IsWebGL2()) return false;
return webgl->GL()->IsSupported(gl::GLFeature::blend_minmax);
}
// -
WebGLExtensionExplicitPresent::WebGLExtensionExplicitPresent(
WebGLContext* const webgl)
: WebGLExtensionBase(webgl) {
if (!IsSupported(webgl)) {
NS_WARNING(
"Constructing WebGLExtensionExplicitPresent but IsSupported() is "
"false!");
// This was previously an assert, but it seems like we get races against
// StaticPrefs changes/initialization?
}
}
bool WebGLExtensionExplicitPresent::IsSupported(
const WebGLContext* const webgl) {
return StaticPrefs::webgl_enable_draft_extensions();
}
// -
WebGLExtensionFloatBlend::WebGLExtensionFloatBlend(WebGLContext* const webgl)
: WebGLExtensionBase(webgl) {
MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
}
bool WebGLExtensionFloatBlend::IsSupported(const WebGLContext* const webgl) {
if (!WebGLExtensionColorBufferFloat::IsSupported(webgl) &&
!WebGLExtensionEXTColorBufferFloat::IsSupported(webgl))
return false;
const auto& gl = webgl->gl;
if (!gl->IsGLES() && gl->Version() >= 300) return true;
if (gl->IsGLES() && gl->Version() >= 320) return true;
return gl->IsExtensionSupported(gl::GLContext::EXT_float_blend);
}
// -
WebGLExtensionFBORenderMipmap::WebGLExtensionFBORenderMipmap(
WebGLContext* const webgl)
: WebGLExtensionBase(webgl) {
MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
}
bool WebGLExtensionFBORenderMipmap::IsSupported(
const WebGLContext* const webgl) {
if (webgl->IsWebGL2()) return false;
const auto& gl = webgl->gl;
if (!gl->IsGLES()) return true;
if (gl->Version() >= 300) return true;
return gl->IsExtensionSupported(gl::GLContext::OES_fbo_render_mipmap);
}
// -
WebGLExtensionMultiview::WebGLExtensionMultiview(WebGLContext* const webgl)
: WebGLExtensionBase(webgl) {
MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
}
bool WebGLExtensionMultiview::IsSupported(const WebGLContext* const webgl) {
if (!webgl->IsWebGL2()) return false;
const auto& gl = webgl->gl;
return gl->IsSupported(gl::GLFeature::multiview);
}
// -
bool WebGLExtensionTextureNorm16::IsSupported(const WebGLContext* const webgl) {
if (!StaticPrefs::webgl_enable_draft_extensions()) return false;
if (!webgl->IsWebGL2()) return false;
const auto& gl = webgl->gl;
// ANGLE's support is broken in our checkout.
if (gl->IsANGLE()) return false;
return gl->IsSupported(gl::GLFeature::texture_norm16);
}
WebGLExtensionTextureNorm16::WebGLExtensionTextureNorm16(WebGLContext* webgl)
: WebGLExtensionBase(webgl) {
if (!IsSupported(webgl)) {
NS_WARNING(
"Constructing WebGLExtensionTextureNorm16 but IsSupported() is "
"false!");
// This was previously an assert, but it seems like we get races against
// StaticPrefs changes/initialization?
}
auto& fua = *webgl->mFormatUsage;
const auto fnAdd = [&](webgl::EffectiveFormat effFormat,
const bool renderable, const webgl::PackingInfo& pi) {
auto& usage = *fua.EditUsage(effFormat);
const auto& format = *usage.format;
const auto dui =
webgl::DriverUnpackInfo{format.sizedFormat, pi.format, pi.type};
fua.AddTexUnpack(&usage, pi, dui);
fua.AllowSizedTexFormat(format.sizedFormat, &usage);
fua.AllowUnsizedTexFormat(pi, &usage);
if (renderable) {
usage.SetRenderable();
fua.AllowRBFormat(format.sizedFormat, &usage);
}
};
fnAdd(webgl::EffectiveFormat::R16, true,
{LOCAL_GL_RED, LOCAL_GL_UNSIGNED_SHORT});
fnAdd(webgl::EffectiveFormat::RG16, true,
{LOCAL_GL_RG, LOCAL_GL_UNSIGNED_SHORT});
fnAdd(webgl::EffectiveFormat::RGB16, false,
{LOCAL_GL_RGB, LOCAL_GL_UNSIGNED_SHORT});
fnAdd(webgl::EffectiveFormat::RGBA16, true,
{LOCAL_GL_RGBA, LOCAL_GL_UNSIGNED_SHORT});
fnAdd(webgl::EffectiveFormat::R16_SNORM, false,
{LOCAL_GL_RED, LOCAL_GL_SHORT});
fnAdd(webgl::EffectiveFormat::RG16_SNORM, false,
{LOCAL_GL_RG, LOCAL_GL_SHORT});
fnAdd(webgl::EffectiveFormat::RGB16_SNORM, false,
{LOCAL_GL_RGB, LOCAL_GL_SHORT});
fnAdd(webgl::EffectiveFormat::RGBA16_SNORM, false,
{LOCAL_GL_RGBA, LOCAL_GL_SHORT});
}
} // namespace mozilla
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