1 //
2 // Copyright 2015 The ANGLE Project Authors. All rights reserved.
3 // Use of this source code is governed by a BSD-style license that can be
4 // found in the LICENSE file.
5 //
6
7 // PbufferSurfaceGLX.cpp: GLX implementation of egl::Surface for PBuffers
8
9 #include "libANGLE/renderer/gl/glx/PbufferSurfaceGLX.h"
10
11 #include "common/debug.h"
12 #include "libANGLE/renderer/gl/glx/DisplayGLX.h"
13 #include "libANGLE/renderer/gl/glx/FunctionsGLX.h"
14
15 namespace rx
16 {
17
PbufferSurfaceGLX(const egl::SurfaceState & state,EGLint width,EGLint height,bool largest,const FunctionsGLX & glx,glx::FBConfig fbConfig)18 PbufferSurfaceGLX::PbufferSurfaceGLX(const egl::SurfaceState &state,
19 EGLint width,
20 EGLint height,
21 bool largest,
22 const FunctionsGLX &glx,
23 glx::FBConfig fbConfig)
24 : SurfaceGLX(state),
25 mWidth(width),
26 mHeight(height),
27 mLargest(largest),
28 mGLX(glx),
29 mFBConfig(fbConfig),
30 mPbuffer(0)
31 {}
32
~PbufferSurfaceGLX()33 PbufferSurfaceGLX::~PbufferSurfaceGLX()
34 {
35 if (mPbuffer)
36 {
37 mGLX.destroyPbuffer(mPbuffer);
38 }
39 }
40
initialize(const egl::Display * display)41 egl::Error PbufferSurfaceGLX::initialize(const egl::Display *display)
42 {
43 // Avoid creating 0-sized PBuffers as it fails on the Intel Mesa driver
44 // as commented on https://bugs.freedesktop.org/show_bug.cgi?id=38869 so we
45 // use (w, 1) or (1, h) instead.
46 int width = std::max(1, static_cast<int>(mWidth));
47 int height = std::max(1, static_cast<int>(mHeight));
48
49 const int attribs[] = {
50 GLX_PBUFFER_WIDTH, width, GLX_PBUFFER_HEIGHT, height, GLX_LARGEST_PBUFFER, mLargest, None};
51
52 mPbuffer = mGLX.createPbuffer(mFBConfig, attribs);
53 if (!mPbuffer)
54 {
55 return egl::EglBadAlloc() << "Failed to create a native GLX pbuffer.";
56 }
57
58 if (mLargest)
59 {
60 mGLX.queryDrawable(mPbuffer, GLX_WIDTH, &mWidth);
61 mGLX.queryDrawable(mPbuffer, GLX_HEIGHT, &mHeight);
62 }
63
64 return egl::NoError();
65 }
66
makeCurrent(const gl::Context * context)67 egl::Error PbufferSurfaceGLX::makeCurrent(const gl::Context *context)
68 {
69 return egl::NoError();
70 }
71
swap(const gl::Context * context)72 egl::Error PbufferSurfaceGLX::swap(const gl::Context *context)
73 {
74 return egl::NoError();
75 }
76
postSubBuffer(const gl::Context * context,EGLint x,EGLint y,EGLint width,EGLint height)77 egl::Error PbufferSurfaceGLX::postSubBuffer(const gl::Context *context,
78 EGLint x,
79 EGLint y,
80 EGLint width,
81 EGLint height)
82 {
83 return egl::NoError();
84 }
85
querySurfacePointerANGLE(EGLint attribute,void ** value)86 egl::Error PbufferSurfaceGLX::querySurfacePointerANGLE(EGLint attribute, void **value)
87 {
88 UNIMPLEMENTED();
89 return egl::NoError();
90 }
91
bindTexImage(const gl::Context * context,gl::Texture * texture,EGLint buffer)92 egl::Error PbufferSurfaceGLX::bindTexImage(const gl::Context *context,
93 gl::Texture *texture,
94 EGLint buffer)
95 {
96 UNIMPLEMENTED();
97 return egl::NoError();
98 }
99
releaseTexImage(const gl::Context * context,EGLint buffer)100 egl::Error PbufferSurfaceGLX::releaseTexImage(const gl::Context *context, EGLint buffer)
101 {
102 UNIMPLEMENTED();
103 return egl::NoError();
104 }
105
setSwapInterval(EGLint interval)106 void PbufferSurfaceGLX::setSwapInterval(EGLint interval) {}
107
getWidth() const108 EGLint PbufferSurfaceGLX::getWidth() const
109 {
110 return mWidth;
111 }
112
getHeight() const113 EGLint PbufferSurfaceGLX::getHeight() const
114 {
115 return mHeight;
116 }
117
isPostSubBufferSupported() const118 EGLint PbufferSurfaceGLX::isPostSubBufferSupported() const
119 {
120 UNIMPLEMENTED();
121 return EGL_FALSE;
122 }
123
getSwapBehavior() const124 EGLint PbufferSurfaceGLX::getSwapBehavior() const
125 {
126 return EGL_BUFFER_PRESERVED;
127 }
128
checkForResize()129 egl::Error PbufferSurfaceGLX::checkForResize()
130 {
131 // The size of pbuffers never change
132 return egl::NoError();
133 }
134
getDrawable() const135 glx::Drawable PbufferSurfaceGLX::getDrawable() const
136 {
137 return mPbuffer;
138 }
139
140 } // namespace rx
141