michael@0: /* vim: se cin sw=2 ts=2 et : */
michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0:  *
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "GfxInfoWebGL.h"
michael@0: 
michael@0: #include "nsServiceManagerUtils.h"
michael@0: 
michael@0: #include "GLDefs.h"
michael@0: #include "nsIDOMWebGLRenderingContext.h"
michael@0: #include "nsICanvasRenderingContextInternal.h"
michael@0: 
michael@0: using namespace mozilla::widget;
michael@0: 
michael@0: nsresult
michael@0: GfxInfoWebGL::GetWebGLParameter(const nsAString& aParam, nsAString& aResult)
michael@0: {
michael@0:   GLenum param;
michael@0: 
michael@0:   if (aParam.EqualsLiteral("vendor")) param = LOCAL_GL_VENDOR;
michael@0:   else if (aParam.EqualsLiteral("renderer")) param = LOCAL_GL_RENDERER;
michael@0:   else if (aParam.EqualsLiteral("version")) param = LOCAL_GL_VERSION;
michael@0:   else if (aParam.EqualsLiteral("shading_language_version")) param = LOCAL_GL_SHADING_LANGUAGE_VERSION;
michael@0:   else if (aParam.EqualsLiteral("extensions")) param = LOCAL_GL_EXTENSIONS;
michael@0:   else if (aParam.EqualsLiteral("full-renderer")) param = 0;
michael@0:   else return NS_ERROR_INVALID_ARG;
michael@0: 
michael@0:   nsCOMPtr<nsIDOMWebGLRenderingContext> webgl =
michael@0:     do_CreateInstance("@mozilla.org/content/canvas-rendering-context;1?id=experimental-webgl");
michael@0:   if (!webgl)
michael@0:     return NS_ERROR_NOT_AVAILABLE;
michael@0: 
michael@0:   nsCOMPtr<nsICanvasRenderingContextInternal> webglInternal =
michael@0:     do_QueryInterface(webgl);
michael@0:   if (!webglInternal)
michael@0:     return NS_ERROR_NOT_AVAILABLE;
michael@0: 
michael@0:   nsresult rv = webglInternal->SetDimensions(16, 16);
michael@0:   NS_ENSURE_SUCCESS(rv, rv);
michael@0: 
michael@0:   if (param)
michael@0:     return webgl->MozGetUnderlyingParamString(param, aResult);
michael@0: 
michael@0:   // this is the "full renderer" string, which is vendor + renderer + version
michael@0: 
michael@0:   nsAutoString str;
michael@0: 
michael@0:   rv = webgl->MozGetUnderlyingParamString(LOCAL_GL_VENDOR, str);
michael@0:   NS_ENSURE_SUCCESS(rv, rv);
michael@0: 
michael@0:   aResult.Append(str);
michael@0:   aResult.AppendLiteral(" -- ");
michael@0: 
michael@0:   rv = webgl->MozGetUnderlyingParamString(LOCAL_GL_RENDERER, str);
michael@0:   NS_ENSURE_SUCCESS(rv, rv);
michael@0: 
michael@0:   aResult.Append(str);
michael@0:   aResult.AppendLiteral(" -- ");
michael@0: 
michael@0:   rv = webgl->MozGetUnderlyingParamString(LOCAL_GL_VERSION, str);
michael@0:   NS_ENSURE_SUCCESS(rv, rv);
michael@0: 
michael@0:   aResult.Append(str);
michael@0: 
michael@0:   return NS_OK;
michael@0: }