1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
//
// Copyright (c) 2015 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// WindowSurfaceWGL.cpp: WGL implementation of egl::Surface for windows
#include "libANGLE/renderer/gl/wgl/WindowSurfaceWGL.h"
#include "common/debug.h"
#include "libANGLE/renderer/gl/RendererGL.h"
#include "libANGLE/renderer/gl/wgl/FunctionsWGL.h"
#include "libANGLE/renderer/gl/wgl/wgl_utils.h"
namespace rx
{
WindowSurfaceWGL::WindowSurfaceWGL(const egl::SurfaceState &state,
RendererGL *renderer,
EGLNativeWindowType window,
int pixelFormat,
HGLRC wglContext,
const FunctionsWGL *functions,
EGLint orientation)
: SurfaceGL(state, renderer),
mPixelFormat(pixelFormat),
mWGLContext(wglContext),
mWindow(window),
mDeviceContext(nullptr),
mFunctionsWGL(functions),
mSwapBehavior(0)
{
// EGL_ANGLE_surface_orientation is not supported for regular WGL window surfaces
ASSERT(orientation == 0);
}
WindowSurfaceWGL::~WindowSurfaceWGL()
{
ReleaseDC(mWindow, mDeviceContext);
mDeviceContext = nullptr;
}
egl::Error WindowSurfaceWGL::initialize(const DisplayImpl *displayImpl)
{
mDeviceContext = GetDC(mWindow);
if (!mDeviceContext)
{
return egl::Error(EGL_BAD_NATIVE_WINDOW, "Failed to get the device context from the native window, "
"error: 0x%X.", GetLastError());
}
// Require that the pixel format for this window has not been set yet or is equal to the Display's pixel format.
int windowPixelFormat = GetPixelFormat(mDeviceContext);
if (windowPixelFormat == 0)
{
PIXELFORMATDESCRIPTOR pixelFormatDescriptor = { 0 };
if (!DescribePixelFormat(mDeviceContext, mPixelFormat, sizeof(pixelFormatDescriptor), &pixelFormatDescriptor))
{
return egl::Error(EGL_BAD_NATIVE_WINDOW, "Failed to DescribePixelFormat, error: 0x%X.", GetLastError());
}
if (!SetPixelFormat(mDeviceContext, mPixelFormat, &pixelFormatDescriptor))
{
return egl::Error(EGL_NOT_INITIALIZED, "Failed to set the pixel format on the device context, "
"error: 0x%X.", GetLastError());
}
}
else if (windowPixelFormat != mPixelFormat)
{
return egl::Error(EGL_NOT_INITIALIZED, "Pixel format of the NativeWindow and NativeDisplayType must match.");
}
// Check for the swap behavior of this pixel format
switch (
wgl::QueryWGLFormatAttrib(mDeviceContext, mPixelFormat, WGL_SWAP_METHOD_ARB, mFunctionsWGL))
{
case WGL_SWAP_COPY_ARB:
mSwapBehavior = EGL_BUFFER_PRESERVED;
break;
case WGL_SWAP_EXCHANGE_ARB:
case WGL_SWAP_UNDEFINED_ARB:
default:
mSwapBehavior = EGL_BUFFER_DESTROYED;
break;
}
return egl::Error(EGL_SUCCESS);
}
egl::Error WindowSurfaceWGL::makeCurrent()
{
if (!mFunctionsWGL->makeCurrent(mDeviceContext, mWGLContext))
{
// TODO: What error type here?
return egl::Error(EGL_CONTEXT_LOST, "Failed to make the WGL context current.");
}
return egl::Error(EGL_SUCCESS);
}
egl::Error WindowSurfaceWGL::swap(const DisplayImpl *displayImpl)
{
if (!mFunctionsWGL->swapBuffers(mDeviceContext))
{
// TODO: What error type here?
return egl::Error(EGL_CONTEXT_LOST, "Failed to swap buffers on the child window.");
}
return egl::Error(EGL_SUCCESS);
}
egl::Error WindowSurfaceWGL::postSubBuffer(EGLint x, EGLint y, EGLint width, EGLint height)
{
UNIMPLEMENTED();
return egl::Error(EGL_SUCCESS);
}
egl::Error WindowSurfaceWGL::querySurfacePointerANGLE(EGLint attribute, void **value)
{
*value = nullptr;
return egl::Error(EGL_SUCCESS);
}
egl::Error WindowSurfaceWGL::bindTexImage(gl::Texture *texture, EGLint buffer)
{
UNIMPLEMENTED();
return egl::Error(EGL_SUCCESS);
}
egl::Error WindowSurfaceWGL::releaseTexImage(EGLint buffer)
{
UNIMPLEMENTED();
return egl::Error(EGL_SUCCESS);
}
void WindowSurfaceWGL::setSwapInterval(EGLint interval)
{
if (mFunctionsWGL->swapIntervalEXT)
{
mFunctionsWGL->swapIntervalEXT(interval);
}
}
EGLint WindowSurfaceWGL::getWidth() const
{
RECT rect;
if (!GetClientRect(mWindow, &rect))
{
return 0;
}
return rect.right - rect.left;
}
EGLint WindowSurfaceWGL::getHeight() const
{
RECT rect;
if (!GetClientRect(mWindow, &rect))
{
return 0;
}
return rect.bottom - rect.top;
}
EGLint WindowSurfaceWGL::isPostSubBufferSupported() const
{
// PostSubBuffer extension not exposed on WGL.
UNIMPLEMENTED();
return EGL_FALSE;
}
EGLint WindowSurfaceWGL::getSwapBehavior() const
{
return mSwapBehavior;
}
}
|
