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// 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: 5.0.0 (2010/01/01)
#include "Wm5GraphicsPCH.h"
#include "Wm5Renderer.h"
#include "Wm5AglRendererData.h"
#include "Wm5AglRendererInput.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);
AglRendererData* data = new0 AglRendererData();
mData = data;
data->mDevice = input.mDevice;
data->mWindow = input.mWindow;
data->mDrawable = (AGLDrawable)GetWindowPort(input.mWindow);
data->mDSpContext = 0;
// See whether we have a renderer available.
AGLRendererInfo info = aglQueryRendererInfo(&input.mDevice, 1);
if (!info)
{
info = aglQueryRendererInfo(0, 0);
}
if (!info)
{
data->FatalErrorMessage(
"Cannot obtain information about the renderer.");
}
// Select the attributes for the frame buffer.
int attributes[256];
int i = 0;
attributes[i++] = AGL_ACCELERATED;
attributes[i++] = AGL_NO_RECOVERY;
// colorFormat is ignored, create 32-bit RGBA buffer.
attributes[i++] = AGL_RGBA;
attributes[i++] = AGL_RED_SIZE;
attributes[i++] = 8;
attributes[i++] = AGL_GREEN_SIZE;
attributes[i++] = 8;
attributes[i++] = AGL_BLUE_SIZE;
attributes[i++] = 8;
attributes[i++] = AGL_ALPHA_SIZE;
attributes[i++] = 8;
// depthStencilFormat is ignored, create 24-8 depthstencil buffer.
attributes[i++] = AGL_DEPTH_SIZE;
attributes[i++] = 24;
attributes[i++] = AGL_STENCIL_SIZE;
attributes[i++] = 8;
// Use double buffering. TODO: GLX has 'attributes[i++] = 1' after this.
attributes[i++] = AGL_DOUBLEBUFFER;
// Request multisampling.
if (numMultisamples == 2 || numMultisamples == 4)
{
attributes[i++] = AGL_SAMPLE_BUFFERS_ARB;
attributes[i++] = 1;
attributes[i++] = AGL_SAMPLES_ARB;
attributes[i++] = numMultisamples;
}
// The list is zero terminated.
attributes[i] = AGL_NONE;
AGLPixelFormat pixelFormat = aglChoosePixelFormat(&data->mDevice, 1,
attributes);
if (!pixelFormat)
{
// Retry without specifying a device.
pixelFormat = aglChoosePixelFormat(0, 0, attributes);
if (!pixelFormat)
{
data->FatalErrorMessage("Cannot choose pixel format.");
}
}
// Create an OpenGL context.
data->mContext = aglCreateContext(pixelFormat, 0);
if (!data->mContext || aglGetError() != noErr)
{
data->FatalErrorMessage("Cannot create rendering context.");
}
if (!aglSetDrawable(data->mContext, data->mDrawable)
|| aglGetError() != noErr)
{
data->FatalErrorMessage("Cannot set the current drawable.");
}
if (!aglSetCurrentContext(data->mContext) || aglGetError() != noErr)
{
data->FatalErrorMessage("Cannot set the current rendering context.");
}
aglDestroyPixelFormat(pixelFormat);
data->SetUpBufferRect(0, 0, width, height);
// Create default screen text font.
const char* defaultFontName = "Monaco";
const int defaultFontSize = 9;
data->LoadFont(defaultFontName, defaultFontSize, false, false);
// 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 = 0;
GTInitGL(infoFile);
data->Finalize(this);
// Disable vertical sync. If you want to enable this, change the value
// of vsValue to 1.
int vsValue = 0;
aglSetInteger(data->mContext, AGL_SWAP_INTERVAL, &vsValue);
// Allocate temporary back buffer to be used for font management.
PixMapHandle pixmap = (**(GDHandle)input.mDevice).gdPMap;
Rect area = { 0, 0, 32, 32 };
int depth = GetPixDepth(pixmap);
OSErr error = NewGWorld(&data->mBack, depth, &area, 0, 0,
useTempMem | pixPurge);
if (error != noErr || !data->mBack)
{
data->FatalErrorMessage("Cannot initialize font management.");
}
// Assign desired font settings to back buffer.
GWorldPtr currentWorld;
GDHandle currentDevice;
GetGWorld(¤tWorld, ¤tDevice);
SetGWorld(data->mBack, 0);
Str255 fontName;
fontName[0] = (int)strlen(defaultFontName);
strcpy((char*)fontName + 1, defaultFontName);
short fontNum;
GetFNum(fontName, &fontNum);
TextFont(fontNum);
TextSize(defaultFontSize);
SetGWorld(currentWorld, currentDevice);
}
//----------------------------------------------------------------------------
Renderer::~Renderer ()
{
AglRendererData* data = (AglRendererData*)mData;
glDeleteLists(data->mFont.mStart, data->mFont.mQuantity);
DisposeGWorld(data->mBack);
aglSetDrawable(data->mContext, 0);
aglDestroyContext(data->mContext);
delete0(data);
Terminate();
}
//----------------------------------------------------------------------------
void Renderer::DisplayColorBuffer ()
{
AglRendererData* data = (AglRendererData*)mData;
if (aglGetDrawable(data->mContext))
{
aglSwapBuffers(data->mContext);
}
}
//----------------------------------------------------------------------------
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