lucent/cocco-ddraw
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Re-implement software renderer in GDI

Browse source
This commit is contained in:
Toni Spets 2011-04-02 21:18:14 +03:00
parent a0c80f3e83
commit 84acbbc0c3
4 changed files with 115 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

98
render_soft.c Normal file
View file

@ -0,0 +1,98 @@
/*
* Copyright (c) 2011 Toni Spets <toni.spets@iki.fi>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <windows.h>
#include <stdio.h>
#include "main.h"
#include "surface.h"
DWORD WINAPI render_soft_main(void)
{
HDC memDC = CreateCompatibleDC(ddraw->render.hDC);
HBITMAP surface = CreateCompatibleBitmap(ddraw->render.hDC, ddraw->width, ddraw->height);
PBITMAPINFO bmi = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(BITMAPINFO) + (sizeof(RGBQUAD) * 256) + 1024);
bmi->bmiHeader.biSize = sizeof(BITMAPINFO);
bmi->bmiHeader.biWidth = ddraw->width;
bmi->bmiHeader.biHeight = -ddraw->height;
bmi->bmiHeader.biPlanes = 1;
bmi->bmiHeader.biBitCount = 8;
bmi->bmiHeader.biCompression = BI_RGB;
SelectObject(memDC, surface);
DWORD tick_start = 0;
DWORD tick_end = 0;
DWORD frame_len = 0;
if(ddraw->render.maxfps < 0)
{
ddraw->render.maxfps = ddraw->mode.dmDisplayFrequency;
}
if(ddraw->render.maxfps > 0)
{
frame_len = 1000.0f / ddraw->render.maxfps;
}
while (ddraw->render.run)
{
if(ddraw->render.maxfps > 0)
{
tick_start = GetTickCount();
}
EnterCriticalSection(&ddraw->cs);
if (ddraw->primary && ddraw->primary->palette)
{
if (ddraw->primary->palette->data_rgb == NULL)
{
ddraw->primary->palette->data_rgb = &bmi->bmiColors[1];
}
SetDIBits(memDC, surface, 0, ddraw->height, ddraw->primary->surface, bmi, DIB_RGB_COLORS);
if (ddraw->render.width != ddraw->width || ddraw->render.height != ddraw->height)
{
StretchBlt(ddraw->render.hDC, 0, 0, ddraw->render.width, ddraw->render.height, memDC, 0, 0, ddraw->width, ddraw->height, SRCCOPY);
}
else
{
BitBlt(ddraw->render.hDC, 0, 0, ddraw->width, ddraw->height, memDC, 0, 0, SRCCOPY);
}
}
LeaveCriticalSection(&ddraw->cs);
if(ddraw->render.maxfps > 0)
{
tick_end = GetTickCount();
if(tick_end - tick_start < frame_len)
{
Sleep( frame_len - (tick_end - tick_start) );
}
}
SetEvent(ddraw->render.ev);
}
HeapFree(GetProcessHeap(), 0, bmi);
DeleteObject(surface);
DeleteDC(memDC);
return TRUE;
}