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// Copyright 2016 The SwiftShader Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "FrameBufferGDI.hpp"
#include "System/Debug.hpp"
namespace sw
{
extern bool forceWindowed;
FrameBufferGDI::FrameBufferGDI(HWND windowHandle, int width, int height, bool fullscreen, bool topLeftOrigin) : FrameBufferWin(windowHandle, width, height, fullscreen, topLeftOrigin)
{
if(!windowed)
{
SetWindowPos(windowHandle, HWND_TOPMOST, 0, 0, width, height, SWP_SHOWWINDOW);
DEVMODE deviceMode;
deviceMode.dmSize = sizeof(DEVMODE);
deviceMode.dmPelsWidth= width;
deviceMode.dmPelsHeight = height;
deviceMode.dmFields = DM_PELSWIDTH | DM_PELSHEIGHT;
ChangeDisplaySettings(&deviceMode, CDS_FULLSCREEN);
}
init(this->windowHandle);
format = VK_FORMAT_B8G8R8A8_UNORM;
}
FrameBufferGDI::~FrameBufferGDI()
{
release();
if(!windowed)
{
ChangeDisplaySettings(0, 0);
RECT clientRect;
RECT windowRect;
GetClientRect(windowHandle, &clientRect);
GetWindowRect(windowHandle, &windowRect);
int windowWidth = width + (windowRect.right - windowRect.left) - (clientRect.right - clientRect.left);
int windowHeight = height + (windowRect.bottom - windowRect.top) - (clientRect.bottom - clientRect.top);
int desktopWidth = GetSystemMetrics(SM_CXSCREEN);
int desktopHeight = GetSystemMetrics(SM_CYSCREEN);
SetWindowPos(windowHandle, HWND_TOP, desktopWidth / 2 - windowWidth / 2, desktopHeight / 2 - windowHeight / 2, windowWidth, windowHeight, SWP_SHOWWINDOW);
}
}
void *FrameBufferGDI::lock()
{
stride = width * 4;
return framebuffer;
}
void FrameBufferGDI::unlock()
{
}
void FrameBufferGDI::flip(sw::Surface *source)
{
blit(source, nullptr, nullptr);
}
void FrameBufferGDI::blit(sw::Surface *source, const Rect *sourceRect, const Rect *destRect)
{
copy(source);
int sourceLeft = sourceRect ? sourceRect->x0 : 0;
int sourceTop = sourceRect ? sourceRect->y0 : 0;
int sourceWidth = sourceRect ? sourceRect->x1 - sourceRect->x0 : width;
int sourceHeight = sourceRect ? sourceRect->y1 - sourceRect->y0 : height;
int destLeft = destRect ? destRect->x0 : 0;
int destTop = destRect ? destRect->y0 : 0;
int destWidth = destRect ? destRect->x1 - destRect->x0 : bounds.right - bounds.left;
int destHeight = destRect ? destRect->y1 - destRect->y0 : bounds.bottom - bounds.top;
StretchBlt(windowContext, destLeft, destTop, destWidth, destHeight, bitmapContext, sourceLeft, sourceTop, sourceWidth, sourceHeight, SRCCOPY);
}
void FrameBufferGDI::flip(HWND windowOverride, sw::Surface *source)
{
blit(windowOverride, source, nullptr, nullptr);
}
void FrameBufferGDI::blit(HWND windowOverride, sw::Surface *source, const Rect *sourceRect, const Rect *destRect)
{
if(windowed && windowOverride != 0 && windowOverride != bitmapWindow)
{
release();
init(windowOverride);
}
blit(source, sourceRect, destRect);
}
void FrameBufferGDI::setGammaRamp(GammaRamp *gammaRamp, bool calibrate)
{
SetDeviceGammaRamp(windowContext, gammaRamp);
}
void FrameBufferGDI::getGammaRamp(GammaRamp *gammaRamp)
{
GetDeviceGammaRamp(windowContext, gammaRamp);
}
void FrameBufferGDI::screenshot(void *destBuffer)
{
UNIMPLEMENTED();
}
bool FrameBufferGDI::getScanline(bool &inVerticalBlank, unsigned int &scanline)
{
UNIMPLEMENTED();
return false;
}
void FrameBufferGDI::init(HWND window)
{
bitmapWindow = window;
windowContext = GetDC(window);
bitmapContext = CreateCompatibleDC(windowContext);
BITMAPINFO bitmapInfo;
memset(&bitmapInfo, 0, sizeof(BITMAPINFO));
bitmapInfo.bmiHeader.biSize = sizeof(BITMAPINFO);
bitmapInfo.bmiHeader.biBitCount = 32;
bitmapInfo.bmiHeader.biPlanes = 1;
bitmapInfo.bmiHeader.biHeight = -height;
bitmapInfo.bmiHeader.biWidth = width;
bitmapInfo.bmiHeader.biCompression = BI_RGB;
bitmap = CreateDIBSection(bitmapContext, &bitmapInfo, DIB_RGB_COLORS, &framebuffer, 0, 0);
SelectObject(bitmapContext, bitmap);
updateBounds(window);
}
void FrameBufferGDI::release()
{
SelectObject(bitmapContext, 0);
DeleteObject(bitmap);
ReleaseDC(bitmapWindow, windowContext);
DeleteDC(bitmapContext);
}
}