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cleaned up the new autoscale code a bit

This commit is contained in:
punkrockguy318 2008-07-02 05:45:51 +00:00
parent 4f0fed301e
commit 1fb1c4b150
2 changed files with 28 additions and 34 deletions
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60
src/drivers/sdl/sdl-video.cpp
View File

@ -110,6 +110,9 @@ KillVideo()
static int s_sponge;
/**
* These functions determine an appropriate scale factor for fullscreen/
*/
inline double GetXScale(int xres)
{
return ((double)xres) / NWIDTH;
@ -117,11 +120,8 @@ inline double GetXScale(int xres)
inline double GetYScale(int yres)
{
return ((double)yres) / s_tlines;
//if(_integerscalefs)
// scale = (int)scale;
}
/**
* Attempts to initialize the graphical video display. Returns 0 on
* success, -1 on failure.
@ -184,37 +184,9 @@ InitVideo(FCEUGI *gi)
flags |= SDL_HWSURFACE;
}
double auto_xscale = 0;
double auto_yscale = 0;
int autoscale;
// check if we are rendering fullscreen
if(s_fullscreen) {
flags |= SDL_FULLSCREEN;
g_config->getOption("SDL.AutoScale", &autoscale);
if(autoscale)
{
auto_xscale = GetXScale(xres);
auto_yscale = GetYScale(yres);
double native_ratio = ((double)NWIDTH) / s_tlines;
double screen_ratio = ((double)xres) / yres;
int keep_aspect;
g_config->getOption("SDL.KeepAspect", &keep_aspect);
// Try to choose resolution
if (screen_ratio < native_ratio)
{
// The screen is narrower than the original. Maximizing width will not clip
auto_xscale = auto_yscale = GetXScale(xres);
if (keep_aspect)
auto_yscale = GetYScale(yres);
}
else
{
auto_yscale = auto_xscale = GetYScale(yres);
if (keep_aspect)
auto_xscale = GetXScale(xres);
}
}
}
if(noframe) {
@ -239,11 +211,33 @@ InitVideo(FCEUGI *gi)
}
if(s_fullscreen) {
int desbpp;
int desbpp, autoscale;
g_config->getOption("SDL.BitsPerPixel", &desbpp);
g_config->getOption("SDL.AutoScale", &autoscale);
if (autoscale)
{
double auto_xscale = GetXScale(xres);
double auto_yscale = GetYScale(yres);
double native_ratio = ((double)NWIDTH) / s_tlines;
double screen_ratio = ((double)xres) / yres;
int keep_aspect;
g_config->getOption("SDL.KeepAspect", &keep_aspect);
// Try to choose resolution
if (screen_ratio < native_ratio)
{
// The screen is narrower than the original. Maximizing width will not clip
auto_xscale = auto_yscale = GetXScale(xres);
if (keep_aspect)
auto_yscale = GetYScale(yres);
}
else
{
auto_yscale = auto_xscale = GetYScale(yres);
if (keep_aspect)
auto_xscale = GetXScale(xres);
}
s_exs = auto_xscale;
s_eys = auto_yscale;
}

2
src/drivers/sdl/sdl.cpp
View File

@ -58,7 +58,7 @@ char *DriverUsage=
--nothrottle x Disables artificial speed throttling, if x is nonzero.\n\
--frameskip x Sets # of frames to skip per emulated frame.\n\
--(x/y)res x, -(x/y) x Sets horizontal/vertical resolution to x for full screen mode.\n\
--autoscale x Enables autoscaling if x is nonzero. \n\
--autoscale x Enables autoscaling in fullscreen if x in nonzero. \n\
--keepratio x Keeps native NES ratio when autoscaling if x is nonzero. \n\
--(x/y)scale x Multiplies width/height by x (Real numbers >0 with OpenGL, otherwise integers >0).\n\
--(x/y)stretch x Stretchess to fill surface on x/y axis (fullscreen, only with OpenGL).\n\