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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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/gl/gl_image_surface_texture.h" | 5 #include "ui/gl/gl_image_surface_texture.h" |
6 | 6 |
7 #include "base/debug/trace_event.h" | 7 #include "base/debug/trace_event.h" |
8 #include "ui/gl/android/surface_texture.h" | 8 #include "ui/gl/android/surface_texture.h" |
9 #include "ui/gl/android/surface_texture_tracker.h" | 9 #include "ui/gl/android/surface_texture_tracker.h" |
10 | 10 |
11 namespace gfx { | 11 namespace gfx { |
12 | 12 |
13 GLImageSurfaceTexture::GLImageSurfaceTexture(const gfx::Size& size) | 13 GLImageSurfaceTexture::GLImageSurfaceTexture(const gfx::Size& size) |
14 : size_(size), texture_id_(0) { | 14 : size_(size), texture_id_(0) { |
15 } | 15 } |
16 | 16 |
17 GLImageSurfaceTexture::~GLImageSurfaceTexture() { Destroy(); } | 17 GLImageSurfaceTexture::~GLImageSurfaceTexture() { |
18 DCHECK(!surface_texture_); | |
19 DCHECK_EQ(0u, texture_id_); | |
20 } | |
18 | 21 |
19 bool GLImageSurfaceTexture::Initialize( | 22 bool GLImageSurfaceTexture::Initialize( |
20 const gfx::GpuMemoryBufferHandle& handle) { | 23 const gfx::GpuMemoryBufferHandle& handle) { |
21 DCHECK(!surface_texture_); | 24 DCHECK(!surface_texture_); |
22 surface_texture_ = | 25 surface_texture_ = |
23 SurfaceTextureTracker::GetInstance()->AcquireSurfaceTexture( | 26 SurfaceTextureTracker::GetInstance()->AcquireSurfaceTexture( |
24 handle.surface_texture_id.primary_id, | 27 handle.surface_texture_id.primary_id, |
25 handle.surface_texture_id.secondary_id); | 28 handle.surface_texture_id.secondary_id); |
26 return !!surface_texture_; | 29 return !!surface_texture_; |
27 } | 30 } |
28 | 31 |
29 void GLImageSurfaceTexture::Destroy() { | 32 void GLImageSurfaceTexture::Destroy(bool have_context) { |
30 surface_texture_ = NULL; | 33 surface_texture_ = NULL; |
31 texture_id_ = 0; | 34 texture_id_ = 0; |
32 } | 35 } |
33 | 36 |
34 gfx::Size GLImageSurfaceTexture::GetSize() { return size_; } | 37 gfx::Size GLImageSurfaceTexture::GetSize() { return size_; } |
35 | 38 |
36 bool GLImageSurfaceTexture::BindTexImage(unsigned target) { | 39 bool GLImageSurfaceTexture::BindTexImage(unsigned target) { |
37 TRACE_EVENT0("gpu", "GLImageSurfaceTexture::BindTexImage"); | 40 TRACE_EVENT0("gpu", "GLImageSurfaceTexture::BindTexImage"); |
38 | 41 |
42 if (!surface_texture_) { | |
43 LOG(ERROR) << "Uninitialized image cannot be bound to texture"; | |
44 return false; | |
45 } | |
reveman
2014/07/25 19:00:23
Let's keep this as before. Sorry.
sohanjg
2014/07/26 10:42:23
Done.
| |
46 | |
39 if (target != GL_TEXTURE_EXTERNAL_OES) { | 47 if (target != GL_TEXTURE_EXTERNAL_OES) { |
40 LOG(ERROR) | 48 LOG(ERROR) |
41 << "Surface texture can only be bound to TEXTURE_EXTERNAL_OES target"; | 49 << "Surface texture can only be bound to TEXTURE_EXTERNAL_OES target"; |
42 return false; | 50 return false; |
43 } | 51 } |
44 | 52 |
45 GLint texture_id; | 53 GLint texture_id; |
46 glGetIntegerv(GL_TEXTURE_BINDING_EXTERNAL_OES, &texture_id); | 54 glGetIntegerv(GL_TEXTURE_BINDING_EXTERNAL_OES, &texture_id); |
47 DCHECK(texture_id); | 55 DCHECK(texture_id); |
48 | 56 |
49 if (texture_id_ && texture_id_ != texture_id) { | 57 if (texture_id_ && texture_id_ != texture_id) { |
50 LOG(ERROR) << "Surface texture can only be bound to one texture ID"; | 58 LOG(ERROR) << "Surface texture can only be bound to one texture ID"; |
51 return false; | 59 return false; |
52 } | 60 } |
53 | 61 |
54 DCHECK(surface_texture_); | |
55 if (texture_id != texture_id_) { | 62 if (texture_id != texture_id_) { |
56 // Note: Surface textures used as gpu memory buffers are created with an | 63 // Note: Surface textures used as gpu memory buffers are created with an |
57 // initial dummy texture id of 0. We need to call DetachFromGLContext() here | 64 // initial dummy texture id of 0. We need to call DetachFromGLContext() here |
58 // to detach from the dummy texture before we can attach to a real texture | 65 // to detach from the dummy texture before we can attach to a real texture |
59 // id. DetachFromGLContext() will delete the texture for the current | 66 // id. DetachFromGLContext() will delete the texture for the current |
60 // attachment point so it's important that this is never called when | 67 // attachment point so it's important that this is never called when |
61 // attached to a real texture id. Detaching from the dummy texture id should | 68 // attached to a real texture id. Detaching from the dummy texture id should |
62 // not cause any problems as the GL should silently ignore 0 when passed to | 69 // not cause any problems as the GL should silently ignore 0 when passed to |
63 // glDeleteTextures. | 70 // glDeleteTextures. |
64 DCHECK_EQ(0, texture_id_); | 71 DCHECK_EQ(0, texture_id_); |
65 surface_texture_->DetachFromGLContext(); | 72 surface_texture_->DetachFromGLContext(); |
66 | 73 |
67 // This will attach the surface texture to the texture currently bound to | 74 // This will attach the surface texture to the texture currently bound to |
68 // GL_TEXTURE_EXTERNAL_OES target. | 75 // GL_TEXTURE_EXTERNAL_OES target. |
69 surface_texture_->AttachToGLContext(); | 76 surface_texture_->AttachToGLContext(); |
70 texture_id_ = texture_id; | 77 texture_id_ = texture_id; |
71 } | 78 } |
72 | 79 |
73 surface_texture_->UpdateTexImage(); | 80 surface_texture_->UpdateTexImage(); |
74 return true; | 81 return true; |
75 } | 82 } |
76 | 83 |
77 } // namespace gfx | 84 } // namespace gfx |
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