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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/WebGLRenderingContextBinding.h"
#include "WebGLContext.h"
#include "WebGLFormats.h"
namespace mozilla {
WebGLExtensionColorBufferHalfFloat::WebGLExtensionColorBufferHalfFloat(
WebGLContext* webgl)
: WebGLExtensionBase(webgl) {
MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
SetRenderable(webgl::FormatRenderableState::Implicit(
WebGLExtensionID::EXT_color_buffer_half_float));
}
void WebGLExtensionColorBufferHalfFloat::SetRenderable(
const webgl::FormatRenderableState state) {
auto& fua = mContext->mFormatUsage;
auto fnUpdateUsage = [&](GLenum sizedFormat, webgl::EffectiveFormat effFormat,
const bool renderable) {
auto usage = fua->EditUsage(effFormat);
if (renderable) {
usage->SetRenderable(state);
}
fua->AllowRBFormat(sizedFormat, usage, renderable);
};
#define FOO(x, y) fnUpdateUsage(LOCAL_GL_##x, webgl::EffectiveFormat::x, y)
FOO(RGBA16F, true);
FOO(RGB16F, false); // It's not required, thus not portable. (Also there's a
// wicked driver bug on Mac+Intel)
#undef FOO
}
void WebGLExtensionColorBufferHalfFloat::OnSetExplicit() {
SetRenderable(webgl::FormatRenderableState::Explicit());
}
bool WebGLExtensionColorBufferHalfFloat::IsSupported(
const WebGLContext* webgl) {
if (webgl->IsWebGL2()) return false;
const auto& gl = webgl->gl;
return gl->IsSupported(gl::GLFeature::renderbuffer_color_half_float) &&
gl->IsSupported(gl::GLFeature::frag_color_float);
}
} // namespace mozilla
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