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124 lines
4.5 KiB
C++
124 lines
4.5 KiB
C++
/*************************************************************************/
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/* opengl_context.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2016 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "opengl_context.h"
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#include <pthread.h>
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#include "ppapi/gles2/gl2ext_ppapi.h"
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#include "os_nacl.h"
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#include "ppapi/cpp/instance.h"
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#include "ppapi/cpp/module.h"
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#include "ppapi/cpp/completion_callback.h"
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#include "ppapi/utility/completion_callback_factory.h"
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namespace {
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// This is called by the brower when the 3D context has been flushed to the
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// browser window.
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void FlushCallback(void* data, int32_t result) {
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static_cast<OpenGLContext*>(data)->set_flush_pending(false);
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static_cast<OpenGLContext*>(data)->FlushContext();
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}
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} // namespace
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OpenGLContext::OpenGLContext(pp::Instance* p_instance)
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: pp::Graphics3DClient(p_instance),
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flush_pending_(false) {
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instance = p_instance;
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pp::Module* module = pp::Module::Get();
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assert(module);
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gles2_interface_ = static_cast<const struct PPB_OpenGLES2_Dev*>(
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module->GetBrowserInterface(PPB_OPENGLES2_INTERFACE));
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assert(gles2_interface_);
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}
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OpenGLContext::~OpenGLContext() {
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glSetCurrentContextPPAPI(0);
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}
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bool OpenGLContext::MakeContextCurrent(pp::Instance* instance) {
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if (instance == NULL) {
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glSetCurrentContextPPAPI(0);
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return false;
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}
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// Lazily create the Pepper context.
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if (context_.is_null()) {
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int32_t attribs[] = {
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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, width,
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PP_GRAPHICS3DATTRIB_HEIGHT, height,
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PP_GRAPHICS3DATTRIB_NONE
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};
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context_ = pp::Graphics3D(instance, pp::Graphics3D(), attribs);
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if (context_.is_null()) {
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glSetCurrentContextPPAPI(0);
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return false;
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}
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instance->BindGraphics(context_);
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}
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glSetCurrentContextPPAPI(context_.pp_resource());
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return true;
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}
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void OpenGLContext::ResizeContext(const pp::Size& size) {
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width = size.width();
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height = size.height();
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if (!context_.is_null()) {
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context_.ResizeBuffers(size.width(), size.height());
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}
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}
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void OpenGLContext::InvalidateContext(pp::Instance* instance) {
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glSetCurrentContextPPAPI(0);
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}
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void OpenGLContext::FlushContext() {
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if (flush_pending()) {
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// A flush is pending so do nothing; just drop this flush on the floor.
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return;
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}
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set_flush_pending(true);
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OSNacl* os = (OSNacl*)OS::get_singleton();
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MakeContextCurrent(instance);
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os->iterate();
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context_.SwapBuffers(pp::CompletionCallback(&FlushCallback, this));
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}
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