mirror of https://github.com/mosra/magnum.git
Vladimír Vondruš
14 years ago
5 changed files with 291 additions and 1 deletions
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/*
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Copyright © 2010, 2011, 2012 Vladimír Vondruš <mosra@centrum.cz> |
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This file is part of Magnum. |
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Magnum is free software: you can redistribute it and/or modify |
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it under the terms of the GNU Lesser General Public License version 3 |
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only, as published by the Free Software Foundation. |
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Magnum is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU Lesser General Public License version 3 for more details. |
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*/ |
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#include "NaClApplication.h" |
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#include <ppapi/cpp/graphics_3d.h> |
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#include <ppapi/lib/gl/gles2/gl2ext_ppapi.h> |
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#include <ppapi/cpp/completion_callback.h> |
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#include "Context.h" |
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namespace Magnum { namespace Platform { |
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NaClApplication::NaClApplication(PP_Instance instance, const Math::Vector2<GLsizei>& size): Instance(instance), Graphics3DClient(this), viewportSize(size) { |
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int32_t attributes[] = { |
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PP_GRAPHICS3DATTRIB_ALPHA_SIZE, 8, |
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PP_GRAPHICS3DATTRIB_DEPTH_SIZE, 24, |
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PP_GRAPHICS3DATTRIB_STENCIL_SIZE, 8, |
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PP_GRAPHICS3DATTRIB_SAMPLES, 0, |
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PP_GRAPHICS3DATTRIB_SAMPLE_BUFFERS, 0, |
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PP_GRAPHICS3DATTRIB_WIDTH, size.x(), |
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PP_GRAPHICS3DATTRIB_HEIGHT, size.y(), |
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PP_GRAPHICS3DATTRIB_NONE |
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}; |
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graphics = new pp::Graphics3D(this, attributes); |
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if(graphics->is_null()) { |
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Error() << "Platform::NaClApplication::NaClApplication(): cannot create graphics"; |
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exit(1); |
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} |
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if(!BindGraphics(*graphics)) { |
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Error() << "Platform::NaClApplication::NaClApplication(): cannot bind graphics"; |
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exit(1); |
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} |
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glSetCurrentContextPPAPI(graphics->pp_resource()); |
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c = new Context; |
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} |
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NaClApplication::~NaClApplication() { |
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delete c; |
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delete graphics; |
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} |
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void NaClApplication::DidChangeView(const pp::View& view) { |
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Math::Vector2<GLsizei> size(view.GetRect().width(), view.GetRect().height()); |
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/* Canvas resized */ |
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if(viewportSize != size) { |
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graphics->ResizeBuffers(size.x(), size.y()); |
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viewportSize = size; |
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flags |= Flag::ViewportUpdated; |
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} |
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/* Update viewport, if changed */ |
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if(!(flags & Flag::ViewportUpdated)) { |
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flags &= ~Flag::ViewportUpdated; |
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viewportEvent(size); |
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} |
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drawEvent(); |
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} |
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void NaClApplication::swapBuffers() { |
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/* Swap already in progress, do nothing */ |
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if(flags & Flag::SwapInProgress) return; |
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/* Swap buffers and call swapCallback() when done */ |
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flags |= Flag::SwapInProgress; |
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graphics->SwapBuffers(pp::CompletionCallback(&swapCallback, this)); |
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} |
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void NaClApplication::swapCallback(void* applicationInstance, std::int32_t) { |
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NaClApplication* instance = static_cast<NaClApplication*>(applicationInstance); |
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instance->flags &= ~Flag::SwapInProgress; |
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/* Redraw, if requested */ |
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if(instance->flags & Flag::Redraw) { |
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instance->flags &= ~Flag::Redraw; |
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instance->drawEvent(); |
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} |
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} |
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}} |
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#ifndef Magnum_Platform_NaClApplication_h |
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#define Magnum_Platform_NaClApplication_h |
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/*
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Copyright © 2010, 2011, 2012 Vladimír Vondruš <mosra@centrum.cz> |
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This file is part of Magnum. |
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|
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Magnum is free software: you can redistribute it and/or modify |
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it under the terms of the GNU Lesser General Public License version 3 |
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only, as published by the Free Software Foundation. |
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|
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Magnum is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU Lesser General Public License version 3 for more details. |
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*/ |
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/** @file
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* @brief Class Magnum::Platform::NaClApplication |
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*/ |
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#include <string> |
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#include <Containers/EnumSet.h> |
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#include <ppapi/cpp/instance.h> |
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#include <ppapi/cpp/instance_handle.h> |
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#include <ppapi/cpp/module.h> |
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#include <ppapi/cpp/graphics_3d_client.h> |
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#include <ppapi/gles2/gl2ext_ppapi.h> |
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#include "Math/Vector2.h" |
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#include "Magnum.h" |
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#include "magnumCompatibility.h" |
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namespace pp { |
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class Graphics3D; |
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} |
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namespace Magnum { |
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class Context; |
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namespace Platform { |
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/** @nosubgrouping
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@brief NaCl application |
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@section NaClApplication-usage Usage |
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You need to implement at least drawEvent() and viewportEvent() to be able to |
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draw on the screen. The subclass must be then registered to NaCl API using |
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MAGNUM_NACLAPPLICATION_MAIN() macro. |
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@code |
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class MyApplication: public Magnum::Platform::Sdl2Application { |
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// implement required methods...
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}; |
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MAGNUM_NACLAPPLICATION_MAIN(MyApplication) |
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@endcode |
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*/ |
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class NaClApplication: public pp::Instance, public pp::Graphics3DClient { |
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public: |
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/**
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* @brief Constructor |
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* @param instance Module instance |
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* @param size Rendering size |
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* |
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* Creates double-buffered RGBA canvas with depth and stencil buffers. |
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*/ |
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explicit NaClApplication(PP_Instance instance, const Math::Vector2<GLsizei>& size = Math::Vector2<GLsizei>(640, 480)); |
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~NaClApplication(); |
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/** @{ @name Drawing functions */ |
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protected: |
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/**
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* @brief Viewport event |
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* |
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* Called when viewport size changes. You should pass the new size to |
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* Framebuffer::setViewport() or SceneGraph::Camera::setViewport(), |
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* if using scene graph. |
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*/ |
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virtual void viewportEvent(const Math::Vector2<GLsizei>& size) = 0; |
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/**
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* @brief Draw event |
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* |
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* Here implement your drawing functions, such as calling |
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* SceneGraph::Camera::draw(). After drawing is finished, call |
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* swapBuffers(). If you want to draw immediately again, call also |
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* redraw(). |
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*/ |
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virtual void drawEvent() = 0; |
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/**
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* @brief Swap buffers |
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* |
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* Paints currently rendered framebuffer on screen. |
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*/ |
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void swapBuffers(); |
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/**
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* @brief Redraw immediately |
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* |
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* Marks the window for redrawing, resulting in call of drawEvent() |
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* in the next iteration. |
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*/ |
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inline void redraw() { |
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flags |= Flag::Redraw; |
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} |
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/*@}*/ |
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private: |
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enum class Flag: std::uint8_t { |
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ViewportUpdated = 1 << 0, |
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SwapInProgress = 1 << 1, |
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Redraw = 1 << 2 |
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}; |
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typedef Corrade::Containers::EnumSet<Flag, std::uint8_t> Flags; |
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inline void Graphics3DContextLost() override { |
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CORRADE_ASSERT(false, "NaClApplication: context unexpectedly lost", ); |
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} |
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void DidChangeView(const pp::View& view) override; |
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static void swapCallback(void* applicationInstance, std::int32_t); |
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pp::Graphics3D* graphics; |
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Context* c; |
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Math::Vector2<GLsizei> viewportSize; |
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Flags flags; |
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CORRADE_ENUMSET_FRIEND_OPERATORS(Flags) |
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}; |
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CORRADE_ENUMSET_OPERATORS(NaClApplication::Flags) |
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#ifndef DOXYGEN_GENERATING_OUTPUT |
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namespace Implementation { |
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template<class Application> class NaClModule: public pp::Module { |
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public: |
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inline ~NaClModule() { |
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glTerminatePPAPI(); |
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} |
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inline bool Init() override { |
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return glInitializePPAPI(get_browser_interface()) == GL_TRUE; |
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} |
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inline pp::Instance* CreateInstance(PP_Instance instance) { |
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return new Application(instance); |
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} |
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}; |
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} |
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#endif |
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/** @hideinitializer
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@brief Entry point for NaCl application |
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@param application Application class name |
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See NaClApplication for more information. |
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*/ |
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/* look at that insane placement of __attribute__. WTF. */ |
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#define MAGNUM_NACLAPPLICATION_MAIN(application) \ |
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namespace pp { \
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Module __attribute__ ((visibility ("default"))) * CreateModule() { \
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return new Magnum::Platform::Implementation::NaClModule<application>(); \
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} \
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} |
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}} |
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#endif |
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