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
|
// Geometric Tools, LLC
// Copyright (c) 1998-2014
// Distributed under the Boost Software License, Version 1.0.
// http://www.boost.org/LICENSE_1_0.txt
// http://www.geometrictools.com/License/Boost/LICENSE_1_0.txt
//
// File Version: 5.0.1 (2010/04/14)
#include "Wm5GraphicsPCH.h"
#include "Wm5Renderer.h"
#include "Wm5WglRendererData.h"
#include "Wm5WglRendererInput.h"
using namespace Wm5;
//----------------------------------------------------------------------------
Renderer::Renderer (RendererInput& input, int width, int height,
Texture::Format colorFormat, Texture::Format depthStencilFormat,
int numMultisamples)
{
Initialize(width, height, colorFormat, depthStencilFormat,
numMultisamples);
WglRendererData* data = new0 WglRendererData();
mData = data;
data->mWindowHandle = input.mWindowHandle;
data->mWindowDC = ::GetDC(input.mWindowHandle);
// The application layer needs to know the device context in case it has
// to recreate a window to support multisampling.
input.mRendererDC = data->mWindowDC;
// Select the format for the drawing surface.
PIXELFORMATDESCRIPTOR pfd;
memset(&pfd, 0, sizeof(PIXELFORMATDESCRIPTOR));
pfd.nSize = sizeof(PIXELFORMATDESCRIPTOR);
pfd.nVersion = 1;
pfd.dwFlags =
PFD_DRAW_TO_WINDOW |
PFD_SUPPORT_OPENGL |
PFD_GENERIC_ACCELERATED;
pfd.dwFlags |= PFD_DOUBLEBUFFER;
// colorFormat is ignored, create 32-bit RGBA buffer.
pfd.iPixelType = PFD_TYPE_RGBA;
pfd.cColorBits = 32;
// depthStencilFormat is ignored, create 24-8 depthstencil buffer.
pfd.cDepthBits = 24;
pfd.cStencilBits = 8;
// Set the pixel format for the rendering context.
bool firstTime = (input.mPixelFormat == 0 ? true : false);
if (firstTime)
{
// First time creation. If multisampling is requested, a second
// creation will occur and the input pixel format will be supplied
// directly to SetPixelFormat.
input.mPixelFormat = ChoosePixelFormat(data->mWindowDC, &pfd);
if (input.mPixelFormat == 0)
{
assertion(false, "ChoosePixelFormat failed\n");
return;
}
}
BOOL success = SetPixelFormat(data->mWindowDC, input.mPixelFormat, &pfd);
if (!success)
{
assertion(false, "SetPixelFormat failed\n");
return;
}
// Create an OpenGL context.
data->mWindowRC = wglCreateContext(data->mWindowDC);
if (!data->mWindowRC)
{
assertion(false, "wglCreateContext failed\n");
return;
}
// Activate the context.
success = wglMakeCurrent(data->mWindowDC, data->mWindowRC);
if (!success)
{
assertion(false, "wglMakeCurrent failed\n");
return;
}
if (firstTime)
{
// Load the function pointers for the OpenGL extensions. This only
// needs to occur once. If you want a file to be created that stores
// the OpenGL driver information, change the input filename to a
// valid string; for example, "OpenGLDriverInfo.txt".
//const char* infoFile = "OpenGLDriverInfo.txt";
const char* infoFile = 0;
GTInitWGL(infoFile);
}
if (input.mDisableVerticalSync)
{
// Disable the wait for vertical sync.
wglSwapIntervalEXT(0);
}
#ifdef WM5_USE_TEXT_DISPLAY_LIST
// Use the system font as default.
int firstChar = int(' ');
data->mFont.mQuantity = 127 - firstChar;
data->mFont.mStart = glGenLists(data->mFont.mQuantity);
data->mFont.mBase = data->mFont.mStart - firstChar;
SelectObject(data->mWindowDC, GetStockObject(SYSTEM_FONT));
wglUseFontBitmaps(data->mWindowDC, firstChar, data->mFont.mQuantity,
data->mFont.mStart);
#endif
// Select the shader profiles.
VertexShader::SetProfile(VertexShader::VP_ARBVP1);
PixelShader::SetProfile(PixelShader::PP_ARBFP1);
// Query the device for its capabilities. TODO: The number of images
// turns out to be larger than what Shader Model 3 supports. Why is this?
data->mMaxVShaderImages = 0;
data->mMaxPShaderImages = 0;
data->mMaxCombinedImages = 0;
glGetIntegerv(GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS,
&data->mMaxVShaderImages);
glGetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS,
&data->mMaxPShaderImages);
glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS,
&data->mMaxCombinedImages);
// Set the default render states.
data->mCurrentRS.Initialize(mDefaultAlphaState, mDefaultCullState,
mDefaultDepthState, mDefaultOffsetState, mDefaultStencilState,
mDefaultWireState);
}
//----------------------------------------------------------------------------
Renderer::~Renderer ()
{
WglRendererData* data = (WglRendererData*)mData;
#ifdef WM5_USE_TEXT_DISPLAY_LIST
glDeleteLists(data->mFont.mStart, data->mFont.mQuantity);
#endif
if (data->mWindowRC)
{
wglDeleteContext(data->mWindowRC);
}
if (data->mWindowDC)
{
::ReleaseDC(data->mWindowHandle, data->mWindowDC);
}
delete0(data);
Terminate();
}
//----------------------------------------------------------------------------
void Renderer::DisplayColorBuffer ()
{
WglRendererData* data = (WglRendererData*)mData;
SwapBuffers(data->mWindowDC);
}
//----------------------------------------------------------------------------
|
