The Tor Browser: content/canvas/src/WebGLExtensionDrawBuffers.cpp@deefc01c0e14

Integrate friendly tips from Tor colleagues to make (or not) 4.5 alpha 3;
This includes removal of overloaded (but unused) methods, and addition of
a overlooked call to DataStruct::SetData(nsISupports, uint32_t, bool.)

     1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this file,

     4  * You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #include "WebGLContext.h"

     7 #include "WebGLExtensions.h"

     8 #include "mozilla/dom/WebGLRenderingContextBinding.h"

     9 #include "WebGLTexture.h"

    10 #include "WebGLRenderbuffer.h"

    11 #include "WebGLFramebuffer.h"

    12 #include "GLContext.h"

    14 #include <algorithm>

    16 using namespace mozilla;

    17 using namespace gl;

    19 WebGLExtensionDrawBuffers::WebGLExtensionDrawBuffers(WebGLContext* context)

    20     : WebGLExtensionBase(context)

    21 {

    22     GLint maxColorAttachments = 0;

    23     GLint maxDrawBuffers = 0;

    25     gl::GLContext* gl = context->GL();

    27     context->MakeContextCurrent();

    29     gl->fGetIntegerv(LOCAL_GL_MAX_COLOR_ATTACHMENTS, &maxColorAttachments);

    30     gl->fGetIntegerv(LOCAL_GL_MAX_DRAW_BUFFERS, &maxDrawBuffers);

    32     // WEBGL_draw_buffers specifications don't give a maximal value reachable by MAX_COLOR_ATTACHMENTS.

    33     maxColorAttachments = std::min(maxColorAttachments, GLint(WebGLContext::sMaxColorAttachments));

    35     if (context->MinCapabilityMode())

    36     {

    37         maxColorAttachments = std::min(maxColorAttachments, GLint(sMinColorAttachments));

    38     }

    40     // WEBGL_draw_buffers specifications request MAX_COLOR_ATTACHMENTS >= MAX_DRAW_BUFFERS.

    41     maxDrawBuffers = std::min(maxDrawBuffers, GLint(maxColorAttachments));

    43     context->mGLMaxColorAttachments = maxColorAttachments;

    44     context->mGLMaxDrawBuffers = maxDrawBuffers;

    45 }

    47 WebGLExtensionDrawBuffers::~WebGLExtensionDrawBuffers()

    48 {

    49 }

    51 void WebGLExtensionDrawBuffers::DrawBuffersWEBGL(const dom::Sequence<GLenum>& buffers)

    52 {

    53     if (mIsLost)

    54         return mContext->ErrorInvalidOperation("drawBuffersWEBGL: Extension is lost.");

    56     mContext->DrawBuffers(buffers);

    57 }

    59 bool WebGLExtensionDrawBuffers::IsSupported(const WebGLContext* context)

    60 {

    61     gl::GLContext * gl = context->GL();

    63     if (!gl->IsSupported(GLFeature::draw_buffers)) {

    64         return false;

    65     }

    67     GLint supportedColorAttachments = 0;

    68     GLint supportedDrawBuffers = 0;

    70     context->MakeContextCurrent();

    72     gl->fGetIntegerv(LOCAL_GL_MAX_COLOR_ATTACHMENTS, &supportedColorAttachments);

    73     gl->fGetIntegerv(LOCAL_GL_MAX_COLOR_ATTACHMENTS, &supportedDrawBuffers);

    75     if (size_t(supportedColorAttachments) < sMinColorAttachments){

    76         // WEBGL_draw_buffers specifications request for 4 color attachments at least.

    77         return false;

    78     }

    80     if (size_t(supportedDrawBuffers) < sMinDrawBuffers){

    81         return false;

    82     }

    84     return true;

    85 }

    87 IMPL_WEBGL_EXTENSION_GOOP(WebGLExtensionDrawBuffers)

The Tor Browser / file revision

content/canvas/src/WebGLExtensionDrawBuffers.cpp@deefc01c0e14

content/canvas/src/WebGLExtensionDrawBuffers.cpp