зеркало из https://github.com/mozilla/gecko-dev.git
54 строки
1.5 KiB
C++
54 строки
1.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "WebGLExtensions.h"
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#include <algorithm>
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#include "GLContext.h"
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#include "mozilla/dom/WebGLRenderingContextBinding.h"
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#include "WebGLContext.h"
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#include "WebGLFramebuffer.h"
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#include "WebGLRenderbuffer.h"
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#include "WebGLTexture.h"
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namespace mozilla {
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WebGLExtensionDrawBuffers::WebGLExtensionDrawBuffers(WebGLContext* webgl)
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: WebGLExtensionBase(webgl) {
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MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
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webgl->UpdateMaxDrawBuffers();
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}
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WebGLExtensionDrawBuffers::~WebGLExtensionDrawBuffers() {}
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void WebGLExtensionDrawBuffers::DrawBuffersWEBGL(
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const dom::Sequence<GLenum>& buffers) {
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if (mIsLost) {
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if (mContext) {
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mContext->ErrorInvalidOperation("drawBuffersWEBGL: Extension is lost.");
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}
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return;
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}
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mContext->DrawBuffers(buffers);
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}
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bool WebGLExtensionDrawBuffers::IsSupported(const WebGLContext* webgl) {
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if (webgl->IsWebGL2()) return false;
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gl::GLContext* gl = webgl->GL();
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if (gl->IsGLES() && gl->Version() >= 300) {
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// ANGLE's shader translator can't translate ESSL1 exts to ESSL3. (bug
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// 1524804)
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return false;
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}
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return gl->IsSupported(gl::GLFeature::draw_buffers);
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}
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IMPL_WEBGL_EXTENSION_GOOP(WebGLExtensionDrawBuffers, WEBGL_draw_buffers)
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} // namespace mozilla
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