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Side by Side Diff: ui/gfx/surface/accelerated_surface_mac.cc

Issue 7021014: GLContext no longer holds a pointer to a GLSurface. (Closed) Base URL: svn://chrome-svn/chrome/trunk/src/
Patch Set: '' Created 9 years, 7 months ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "ui/gfx/surface/accelerated_surface_mac.h" 5 #include "ui/gfx/surface/accelerated_surface_mac.h"
6 6
7 #include "base/logging.h" 7 #include "base/logging.h"
8 #include "base/mac/scoped_cftyperef.h" 8 #include "base/mac/scoped_cftyperef.h"
9 #include "ui/gfx/gl/gl_bindings.h" 9 #include "ui/gfx/gl/gl_bindings.h"
10 #include "ui/gfx/gl/gl_implementation.h" 10 #include "ui/gfx/gl/gl_implementation.h"
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28 28
29 // Ensure GL is initialized before trying to create an offscreen GL context. 29 // Ensure GL is initialized before trying to create an offscreen GL context.
30 if (!gfx::GLSurface::InitializeOneOff()) 30 if (!gfx::GLSurface::InitializeOneOff())
31 return false; 31 return false;
32 32
33 // Drawing to IOSurfaces via OpenGL only works with desktop GL and 33 // Drawing to IOSurfaces via OpenGL only works with desktop GL and
34 // not with the OSMesa software renderer. 34 // not with the OSMesa software renderer.
35 if (gfx::GetGLImplementation() != gfx::kGLImplementationDesktopGL) 35 if (gfx::GetGLImplementation() != gfx::kGLImplementationDesktopGL)
36 return false; 36 return false;
37 37
38 scoped_ptr<gfx::GLSurface> surface(gfx::GLSurface::CreateOffscreenGLSurface( 38 gl_surface_.reset(gfx::GLSurface::CreateOffscreenGLSurface(gfx::Size(1, 1)));
39 gfx::Size(1, 1))); 39 if (!gl_surface_.get()) {
40 if (!surface.get()) {
41 Destroy(); 40 Destroy();
42 return false; 41 return false;
43 } 42 }
44 43
45 gl_context_.reset(gfx::GLContext::CreateGLContext(surface.release(), 44 gl_context_.reset(gfx::GLContext::CreateGLContext(share_context,
46 share_context)); 45 gl_surface_.get()));
47 if (!gl_context_.get()) { 46 if (!gl_context_.get()) {
48 Destroy(); 47 Destroy();
49 return false; 48 return false;
50 } 49 }
51 50
52 // Now we're ready to handle SetSurfaceSize calls, which will 51 // Now we're ready to handle SetSurfaceSize calls, which will
53 // allocate and/or reallocate the IOSurface and associated offscreen 52 // allocate and/or reallocate the IOSurface and associated offscreen
54 // OpenGL structures for rendering. 53 // OpenGL structures for rendering.
55 return true; 54 return true;
56 } 55 }
57 56
58 void AcceleratedSurface::Destroy() { 57 void AcceleratedSurface::Destroy() {
59 // The FBO and texture objects will be destroyed when the OpenGL context, 58 // The FBO and texture objects will be destroyed when the OpenGL context,
60 // and any other contexts sharing resources with it, is. We don't want to 59 // and any other contexts sharing resources with it, is. We don't want to
61 // make the context current one last time here just in order to delete 60 // make the context current one last time here just in order to delete
62 // these objects. 61 // these objects.
63 62
64 // Release the old TransportDIB in the browser. 63 // Release the old TransportDIB in the browser.
65 if (dib_free_callback_.get() && transport_dib_.get()) { 64 if (dib_free_callback_.get() && transport_dib_.get()) {
66 dib_free_callback_->Run(transport_dib_->id()); 65 dib_free_callback_->Run(transport_dib_->id());
67 } 66 }
68 transport_dib_.reset(); 67 transport_dib_.reset();
69 68
70 if (gl_context_.get())
71 gl_context_->Destroy();
72 gl_context_.reset(); 69 gl_context_.reset();
70 gl_surface_.reset();
73 } 71 }
74 72
75 // Call after making changes to the surface which require a visual update. 73 // Call after making changes to the surface which require a visual update.
76 // Makes the rendering show up in other processes. 74 // Makes the rendering show up in other processes.
77 void AcceleratedSurface::SwapBuffers() { 75 void AcceleratedSurface::SwapBuffers() {
78 if (io_surface_.get() != NULL) { 76 if (io_surface_.get() != NULL) {
79 if (allocate_fbo_) { 77 if (allocate_fbo_) {
80 // Bind and unbind the framebuffer to make changes to the 78 // Bind and unbind the framebuffer to make changes to the
81 // IOSurface show up in the other process. 79 // IOSurface show up in the other process.
82 glFlush(); 80 glFlush();
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192 GL_RENDERBUFFER_EXT, 190 GL_RENDERBUFFER_EXT,
193 depth_stencil_renderbuffer_); 191 depth_stencil_renderbuffer_);
194 fbo_status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT); 192 fbo_status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
195 } 193 }
196 return fbo_status == GL_FRAMEBUFFER_COMPLETE_EXT; 194 return fbo_status == GL_FRAMEBUFFER_COMPLETE_EXT;
197 } 195 }
198 196
199 bool AcceleratedSurface::MakeCurrent() { 197 bool AcceleratedSurface::MakeCurrent() {
200 if (!gl_context_.get()) 198 if (!gl_context_.get())
201 return false; 199 return false;
202 return gl_context_->MakeCurrent(); 200 return gl_context_->MakeCurrent(gl_surface_.get());
203 } 201 }
204 202
205 void AcceleratedSurface::Clear(const gfx::Rect& rect) { 203 void AcceleratedSurface::Clear(const gfx::Rect& rect) {
206 DCHECK(gl_context_->IsCurrent()); 204 DCHECK(gl_context_->IsCurrent(gl_surface_.get()));
207 glClearColor(0, 0, 0, 0); 205 glClearColor(0, 0, 0, 0);
208 glViewport(0, 0, rect.width(), rect.height()); 206 glViewport(0, 0, rect.width(), rect.height());
209 glMatrixMode(GL_PROJECTION); 207 glMatrixMode(GL_PROJECTION);
210 glLoadIdentity(); 208 glLoadIdentity();
211 glOrtho(0, rect.width(), 0, rect.height(), -1, 1); 209 glOrtho(0, rect.width(), 0, rect.height(), -1, 1);
212 glClear(GL_COLOR_BUFFER_BIT); 210 glClear(GL_COLOR_BUFFER_BIT);
213 } 211 }
214 212
215 uint64 AcceleratedSurface::SetSurfaceSize(const gfx::Size& size) { 213 uint64 AcceleratedSurface::SetSurfaceSize(const gfx::Size& size) {
216 if (surface_size_ == size) { 214 if (surface_size_ == size) {
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327 return TransportDIB::DefaultHandleValue(); 325 return TransportDIB::DefaultHandleValue();
328 } 326 }
329 transport_dib_.reset(TransportDIB::Map(dib_handle)); 327 transport_dib_.reset(TransportDIB::Map(dib_handle));
330 if (transport_dib_.get() == NULL) { 328 if (transport_dib_.get() == NULL) {
331 // TODO(dspringer): if the Map() fails, should the deallocator be run so 329 // TODO(dspringer): if the Map() fails, should the deallocator be run so
332 // that the DIB is deallocated in the browser? 330 // that the DIB is deallocated in the browser?
333 return TransportDIB::DefaultHandleValue(); 331 return TransportDIB::DefaultHandleValue();
334 } 332 }
335 333
336 if (allocate_fbo_) { 334 if (allocate_fbo_) {
337 DCHECK(gl_context_->IsCurrent()); 335 DCHECK(gl_context_->IsCurrent(gl_surface_.get()));
338 // Set up the render buffers and reserve enough space on the card for the 336 // Set up the render buffers and reserve enough space on the card for the
339 // framebuffer texture. 337 // framebuffer texture.
340 GLenum target = GL_TEXTURE_RECTANGLE_ARB; 338 GLenum target = GL_TEXTURE_RECTANGLE_ARB;
341 AllocateRenderBuffers(target, size); 339 AllocateRenderBuffers(target, size);
342 glTexImage2D(target, 340 glTexImage2D(target,
343 0, // mipmap level 0 341 0, // mipmap level 0
344 GL_RGBA8, // internal pixel format 342 GL_RGBA8, // internal pixel format
345 size.width(), 343 size.width(),
346 size.height(), 344 size.height(),
347 0, // 0 border 345 0, // 0 border
348 GL_BGRA, // Used for consistency 346 GL_BGRA, // Used for consistency
349 GL_UNSIGNED_INT_8_8_8_8_REV, 347 GL_UNSIGNED_INT_8_8_8_8_REV,
350 NULL); // No data, just reserve room on the card. 348 NULL); // No data, just reserve room on the card.
351 SetupFrameBufferObject(target); 349 SetupFrameBufferObject(target);
352 } 350 }
353 return transport_dib_->handle(); 351 return transport_dib_->handle();
354 } 352 }
355 353
356 void AcceleratedSurface::SetTransportDIBAllocAndFree( 354 void AcceleratedSurface::SetTransportDIBAllocAndFree(
357 Callback2<size_t, TransportDIB::Handle*>::Type* allocator, 355 Callback2<size_t, TransportDIB::Handle*>::Type* allocator,
358 Callback1<TransportDIB::Id>::Type* deallocator) { 356 Callback1<TransportDIB::Id>::Type* deallocator) {
359 dib_alloc_callback_.reset(allocator); 357 dib_alloc_callback_.reset(allocator);
360 dib_free_callback_.reset(deallocator); 358 dib_free_callback_.reset(deallocator);
361 } 359 }
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