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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 "Wm5AglRendererData.h"
#include "Wm5Renderer.h"
using namespace Wm5;
//----------------------------------------------------------------------------
void AglRendererData::LoadFont (const char* face, int size, bool fontBold,
bool fontItalic)
{
mFont.mQuantity = 256;
mFont.mStart = glGenLists(mFont.mQuantity);
mFont.mBase = 1;
Str255 fontName;
fontName[0] = (int)strlen(face);
strcpy((char*)fontName + 1, face);
short fontNum;
GetFNum(fontName, &fontNum);
Style style = normal;
if (fontBold)
{
style |= bold;
}
if (fontItalic)
{
style |= italic;
}
if (!aglUseFont(mContext, fontNum, style, size,0, mFont.mQuantity,
mFont.mStart))
{
glDeleteLists(mFont.mStart, mFont.mQuantity);
}
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
}
//----------------------------------------------------------------------------
void AglRendererData::SetUpBufferRect (int winXPos, int winYPos,
int winWidth, int winHeight)
{
// If the context is smaller than the underlying surface, we clip it.
CGrafPtr port = aglGetDrawable(mContext);
Rect portRect = { 0 };
GetPortBounds(port, &portRect);
int portWidth = portRect.right - portRect.left;
int portHeight = portRect.bottom - portRect.top;
if (portWidth != winWidth || portHeight != winHeight)
{
int height = portHeight + 1;
int y = height - winYPos;
if (--y < 0)
{
y = 0;
}
GLint rect[4] = { winXPos, y - winHeight, winWidth, winHeight };
if (!aglSetInteger(mContext, AGL_BUFFER_RECT, rect))
{
FatalErrorMessage("Cannot assign AGL_BUFFER_RECT.");
}
if (!aglEnable(mContext, AGL_BUFFER_RECT))
{
FatalErrorMessage("Cannot enable AGL_BUFFER_RECT.");
}
aglUpdateContext(mContext);
}
else
{
if (!aglDisable(mContext, AGL_BUFFER_RECT))
{
FatalErrorMessage("Cannot disable AGL_BUFFER_RECT.");
}
aglUpdateContext(mContext);
}
}
//----------------------------------------------------------------------------
void AglRendererData::Finalize (Renderer* renderer)
{
// 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?
mMaxVShaderImages = 0;
mMaxPShaderImages = 0;
mMaxCombinedImages = 0;
glGetIntegerv(GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS, &mMaxVShaderImages);
glGetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &mMaxPShaderImages);
glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &mMaxCombinedImages);
// Set the default render states.
mCurrentRS.Initialize(renderer->GetAlphaState(), renderer->GetCullState(),
renderer->GetDepthState(), renderer->GetOffsetState(),
renderer->GetStencilState(), renderer->GetWireState());
}
//----------------------------------------------------------------------------
void AglRendererData::FatalErrorMessage (const char* message)
{
if (mDSpContext)
{
DSpContextState contextState;
if (DSpContext_GetState(mDSpContext, &contextState) == noErr
&& contextState == kDSpContextState_Active)
{
DSpContext_SetState(mDSpContext, kDSpContextState_Inactive);
DSpContext_Release(mDSpContext);
}
}
char header[256];
GLenum error = aglGetError();
sprintf(header, "AglRenderer encountered error %ld.", (long)error);
Str255 strHeader;
strHeader[0] = strlen(header);
strncpy((char*)strHeader + 1, header, strHeader[0]);
int length = strlen(message);
Str255 strMessage;
strMessage[0] = length;
strncpy((char*)strMessage + 1, message, length);
SInt16 item;
StandardAlert(kAlertStopAlert, strHeader, strMessage,0, &item);
ExitToShell();
}
//----------------------------------------------------------------------------
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