15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gl/gl_context_osmesa.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <GL/osmesa.h> 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/logging.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gfx/size.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gl/gl_bindings.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gl/gl_surface.h" 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace gfx { 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)GLContextOSMesa::GLContextOSMesa(GLShareGroup* share_group) 17868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) : GLContextReal(share_group), 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) context_(NULL) { 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool GLContextOSMesa::Initialize(GLSurface* compatible_surface, 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) GpuPreference gpu_preference) { 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(!context_); 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OSMesaContext share_handle = static_cast<OSMesaContext>( 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) share_group() ? share_group()->GetHandle() : NULL); 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) GLuint format = compatible_surface->GetFormat(); 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK_NE(format, (unsigned)0); 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) context_ = OSMesaCreateContextExt(format, 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 0, // depth bits 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 0, // stencil bits 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 0, // accum bits 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) share_handle); 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!context_) { 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) LOG(ERROR) << "OSMesaCreateContextExt failed."; 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void GLContextOSMesa::Destroy() { 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (context_) { 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OSMesaDestroyContext(static_cast<OSMesaContext>(context_)); 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) context_ = NULL; 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool GLContextOSMesa::MakeCurrent(GLSurface* surface) { 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(context_); 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gfx::Size size = surface->GetSize(); 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!OSMesaMakeCurrent(context_, 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) surface->GetHandle(), 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) GL_UNSIGNED_BYTE, 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size.width(), 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size.height())) { 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) LOG(ERROR) << "OSMesaMakeCurrent failed."; 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Destroy(); 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 657d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) // Set this as soon as the context is current, since we might call into GL. 667d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) SetRealGLApi(); 677d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Row 0 is at the top. 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OSMesaPixelStore(OSMESA_Y_UP, 0); 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 71868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) SetCurrent(surface); 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!InitializeExtensionBindings()) { 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ReleaseCurrent(surface); 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!surface->OnMakeCurrent(this)) { 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) LOG(ERROR) << "Could not make current."; 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void GLContextOSMesa::ReleaseCurrent(GLSurface* surface) { 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!IsCurrent(surface)) 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 89868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) SetCurrent(NULL); 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OSMesaMakeCurrent(NULL, NULL, GL_UNSIGNED_BYTE, 0, 0); 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool GLContextOSMesa::IsCurrent(GLSurface* surface) { 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(context_); 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool native_context_is_current = 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) context_ == OSMesaGetCurrentContext(); 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // If our context is current then our notion of which GLContext is 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // current must be correct. On the other hand, third-party code 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // using OpenGL might change the current context. 102868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) DCHECK(!native_context_is_current || (GetRealCurrent() == this)); 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!native_context_is_current) 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (surface) { 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) GLint width; 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) GLint height; 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) GLint format; 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void* buffer = NULL; 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OSMesaGetColorBuffer(context_, &width, &height, &format, &buffer); 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (buffer != surface->GetHandle()) 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void* GLContextOSMesa::GetHandle() { 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return context_; 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void GLContextOSMesa::SetSwapInterval(int interval) { 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(IsCurrent(NULL)); 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)GLContextOSMesa::~GLContextOSMesa() { 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Destroy(); 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace gfx 133