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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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/scoped_binders.h" | 5 #include "ui/gl/scoped_binders.h" |
6 #include "ui/gl/gl_bindings.h" | 6 #include "ui/gl/gl_bindings.h" |
7 #include "ui/gl/gl_context.h" | 7 #include "ui/gl/gl_context.h" |
8 #include "ui/gl/gl_state_restorer.h" | 8 #include "ui/gl/gl_state_restorer.h" |
9 | 9 |
10 namespace gfx { | 10 namespace gfx { |
(...skipping 11 matching lines...) Expand all Loading... | |
22 ScopedFrameBufferBinder::~ScopedFrameBufferBinder() { | 22 ScopedFrameBufferBinder::~ScopedFrameBufferBinder() { |
23 if (state_restorer_) { | 23 if (state_restorer_) { |
24 DCHECK(!!GLContext::GetCurrent()); | 24 DCHECK(!!GLContext::GetCurrent()); |
25 DCHECK_EQ(state_restorer_, GLContext::GetCurrent()->GetGLStateRestorer()); | 25 DCHECK_EQ(state_restorer_, GLContext::GetCurrent()->GetGLStateRestorer()); |
26 state_restorer_->RestoreFramebufferBindings(); | 26 state_restorer_->RestoreFramebufferBindings(); |
27 } else { | 27 } else { |
28 glBindFramebufferEXT(GL_FRAMEBUFFER, old_fbo_); | 28 glBindFramebufferEXT(GL_FRAMEBUFFER, old_fbo_); |
29 } | 29 } |
30 } | 30 } |
31 | 31 |
32 ScopedActiveTexture::ScopedActiveTexture(unsigned int texture) | |
33 : old_texture_(-1) { | |
34 glGetIntegerv(GL_ACTIVE_TEXTURE, &old_texture_); | |
35 glActiveTexture(texture); | |
36 } | |
37 | |
38 ScopedActiveTexture::~ScopedActiveTexture() { | |
39 glActiveTexture(old_texture_); | |
40 } | |
41 | |
32 ScopedTextureBinder::ScopedTextureBinder(unsigned int target, unsigned int id) | 42 ScopedTextureBinder::ScopedTextureBinder(unsigned int target, unsigned int id) |
33 : state_restorer_(!GLContext::GetCurrent() | 43 : state_restorer_(!GLContext::GetCurrent() |
34 ? NULL | 44 ? NULL |
35 : GLContext::GetCurrent()->GetGLStateRestorer()), | 45 : GLContext::GetCurrent()->GetGLStateRestorer()), |
36 target_(target), | 46 target_(target), |
37 old_id_(-1) { | 47 old_id_(-1) { |
38 if (!state_restorer_) { | 48 if (!state_restorer_) { |
39 GLenum target_getter = 0; | 49 GLenum target_getter = 0; |
40 switch (target) { | 50 switch (target) { |
41 case GL_TEXTURE_2D: | 51 case GL_TEXTURE_2D: |
42 target_getter = GL_TEXTURE_BINDING_2D; | 52 target_getter = GL_TEXTURE_BINDING_2D; |
43 break; | 53 break; |
44 case GL_TEXTURE_CUBE_MAP: | 54 case GL_TEXTURE_CUBE_MAP: |
45 target_getter = GL_TEXTURE_BINDING_CUBE_MAP; | 55 target_getter = GL_TEXTURE_BINDING_CUBE_MAP; |
46 break; | 56 break; |
47 case GL_TEXTURE_EXTERNAL_OES: | 57 case GL_TEXTURE_EXTERNAL_OES: |
48 target_getter = GL_TEXTURE_BINDING_EXTERNAL_OES; | 58 target_getter = GL_TEXTURE_BINDING_EXTERNAL_OES; |
49 break; | 59 break; |
60 case GL_TEXTURE_RECTANGLE_ARB: | |
61 target_getter = GL_TEXTURE_BINDING_RECTANGLE_ARB; | |
62 break; | |
50 default: | 63 default: |
51 NOTIMPLEMENTED() << "Target not part of OpenGL ES 2.0 spec."; | 64 NOTIMPLEMENTED() << " Target not supported."; |
52 } | 65 } |
53 glGetIntegerv(target_getter, &old_id_); | 66 glGetIntegerv(target_getter, &old_id_); |
54 } | 67 } |
55 glBindTexture(target_, id); | 68 glBindTexture(target_, id); |
56 } | 69 } |
57 | 70 |
58 ScopedTextureBinder::~ScopedTextureBinder() { | 71 ScopedTextureBinder::~ScopedTextureBinder() { |
59 if (state_restorer_) { | 72 if (state_restorer_) { |
60 DCHECK(!!GLContext::GetCurrent()); | 73 DCHECK(!!GLContext::GetCurrent()); |
61 DCHECK_EQ(state_restorer_, GLContext::GetCurrent()->GetGLStateRestorer()); | 74 DCHECK_EQ(state_restorer_, GLContext::GetCurrent()->GetGLStateRestorer()); |
62 state_restorer_->RestoreActiveTextureUnitBinding(target_); | 75 state_restorer_->RestoreActiveTextureUnitBinding(target_); |
63 } else { | 76 } else { |
64 glBindTexture(target_, old_id_); | 77 glBindTexture(target_, old_id_); |
65 } | 78 } |
66 } | 79 } |
67 | 80 |
81 ScopedUseProgram::ScopedUseProgram(unsigned int program) : old_program_(-1) { | |
82 glGetIntegerv(GL_CURRENT_PROGRAM, &old_program_); | |
83 glUseProgram(program); | |
84 } | |
85 | |
86 ScopedUseProgram::~ScopedUseProgram() { | |
87 glUseProgram(old_program_); | |
88 } | |
89 | |
90 ScopedVertexAttribArray::ScopedVertexAttribArray(unsigned int index, | |
91 int size, | |
92 unsigned int type, | |
93 char normalized, | |
94 int stride, | |
95 const void* pointer) | |
96 : enabled_(GL_FALSE), | |
97 index_(index), | |
98 size_(-1), | |
99 type_(-1), | |
100 normalized_(GL_FALSE), | |
101 stride_(0), | |
102 pointer_(0) { | |
103 glGetVertexAttribiv(index, GL_VERTEX_ATTRIB_ARRAY_ENABLED, &enabled_); | |
104 glEnableVertexAttribArray(index); | |
105 | |
106 glGetVertexAttribiv(index, GL_VERTEX_ATTRIB_ARRAY_SIZE, &size_); | |
107 glGetVertexAttribiv(index, GL_VERTEX_ATTRIB_ARRAY_TYPE, &type_); | |
108 glGetVertexAttribiv(index, GL_VERTEX_ATTRIB_ARRAY_NORMALIZED, &normalized_); | |
109 glGetVertexAttribiv(index, GL_VERTEX_ATTRIB_ARRAY_STRIDE, &stride_); | |
110 glGetVertexAttribPointerv(index, GL_VERTEX_ATTRIB_ARRAY_POINTER, &pointer_); | |
111 | |
112 glVertexAttribPointer(index, size, type, normalized, stride, pointer); | |
113 } | |
114 | |
115 ScopedVertexAttribArray::~ScopedVertexAttribArray() { | |
116 glVertexAttribPointer(index_, size_, type_, normalized_, stride_, pointer_); | |
piman
2015/11/04 22:49:45
So this one is a little tricky, because there's an
Daniele Castagna
2015/12/03 23:12:08
Done.
| |
117 if (enabled_ == GL_FALSE) { | |
118 glDisableVertexAttribArray(index_); | |
119 } | |
120 } | |
121 | |
122 ScopedBufferBinder::ScopedBufferBinder(unsigned int target, unsigned int id) | |
123 : target_(target), old_id_(-1) { | |
124 GLenum target_getter = 0; | |
125 switch (target) { | |
126 case GL_ARRAY_BUFFER: | |
127 target_getter = GL_ARRAY_BUFFER_BINDING; | |
128 break; | |
129 default: | |
130 NOTIMPLEMENTED() << " Target not supported."; | |
131 } | |
132 glGetIntegerv(target_getter, &old_id_); | |
133 glBindBuffer(target_, id); | |
134 } | |
135 | |
136 ScopedBufferBinder::~ScopedBufferBinder() { | |
137 glBindBuffer(target_, old_id_); | |
138 } | |
139 | |
140 ScopedViewport::ScopedViewport(int x, int y, int width, int height) { | |
141 glGetIntegerv(GL_VIEWPORT, data_); | |
142 glViewport(x, y, width, height); | |
143 } | |
144 | |
145 ScopedViewport::~ScopedViewport() { | |
146 glViewport(data_[0], data_[1], data_[2], data_[3]); | |
147 } | |
148 | |
149 ScopedColorMask::ScopedColorMask(char red, char green, char blue, char alpha) { | |
150 glGetBooleanv(GL_COLOR_WRITEMASK, colors_); | |
151 glColorMask(red, green, blue, alpha); | |
152 } | |
153 | |
154 ScopedColorMask::~ScopedColorMask() { | |
155 glColorMask(colors_[0], colors_[1], colors_[2], colors_[3]); | |
156 } | |
157 | |
158 // static | |
159 GLenum ScopedCapabilitiesRestorer::kCapabilities[] = { | |
160 GL_BLEND, GL_CULL_FACE, GL_DEPTH_TEST, | |
161 GL_DITHER, GL_POLYGON_OFFSET_FILL, GL_SAMPLE_ALPHA_TO_COVERAGE, | |
piman
2015/11/04 22:49:45
- polygon offset shouldn't matter since you disabl
Daniele Castagna
2015/12/03 23:12:08
Ack.
This ScopedCapabilitiesRestorer could be used
piman
2015/12/04 00:02:16
Sure, but why these ones and not others too? E.g.
Daniele Castagna
2015/12/04 00:40:18
Not sure why I left GL_SAMPLE_COVERAGE out. My int
| |
162 GL_SCISSOR_TEST, GL_STENCIL_TEST}; | |
163 | |
164 ScopedCapabilitiesRestorer::ScopedCapabilitiesRestorer() { | |
165 static_assert(arraysize(kCapabilities) <= arraysize(enabled_), | |
166 "enabled_ array size should be at least kCapabilities size. "); | |
167 for (size_t i = 0; i < arraysize(kCapabilities); ++i) { | |
168 enabled_[i] = glIsEnabled(kCapabilities[i]); | |
169 } | |
170 } | |
171 | |
172 ScopedCapabilitiesRestorer::~ScopedCapabilitiesRestorer() { | |
173 for (size_t i = 0; i < arraysize(kCapabilities); ++i) { | |
174 if (enabled_[i] == GL_TRUE) { | |
175 glEnable(kCapabilities[i]); | |
176 } else { | |
177 glDisable(kCapabilities[i]); | |
178 } | |
179 } | |
180 } | |
181 | |
68 } // namespace gfx | 182 } // namespace gfx |
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