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Fix opengl splitscreen

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This commit is contained in:
James R 2020-10-26 19:51:42 -07:00
parent 96a5eadc84
commit 2ae394b8e3
2 changed files with 38 additions and 31 deletions
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67
src/hardware/hw_main.c
View file

@ -107,8 +107,10 @@ static angle_t gl_xtoviewangle[MAXVIDWIDTH+1];
// base values set at SetViewSize
static float gl_basecentery;
static float gl_basecenterx;
float gl_baseviewwindowy, gl_basewindowcentery;
float gl_baseviewwindowx, gl_basewindowcenterx;
float gl_viewwidth, gl_viewheight; // viewport clipping boundaries (screen coords)
float gl_viewwindowx;
@ -5597,21 +5599,14 @@ void HWR_SetViewSize(void)
}
}
gl_centerx = gl_viewwidth / 2;
gl_basecentery = gl_viewheight / 2; //note: this is (gl_centerx * gl_viewheight / gl_viewwidth)
gl_basecenterx = gl_viewwidth / 2;
gl_basecentery = gl_viewheight / 2;
gl_viewwindowx = (vid.width - gl_viewwidth) / 2;
gl_windowcenterx = (float)(vid.width / 2);
if (fabsf(gl_viewwidth - vid.width) < 1.0E-36f)
{
gl_baseviewwindowy = 0;
gl_basewindowcentery = gl_viewheight / 2; // window top left corner at 0,0
}
else
{
gl_baseviewwindowy = (vid.height-gl_viewheight) / 2;
gl_basewindowcentery = (float)(vid.height / 2);
}
gl_baseviewwindowx = 0;
gl_basewindowcenterx = gl_viewwidth / 2;
gl_baseviewwindowy = 0;
gl_basewindowcentery = gl_viewheight / 2;
gl_pspritexscale = gl_viewwidth / BASEVIDWIDTH;
gl_pspriteyscale = ((vid.height*gl_pspritexscale*BASEVIDWIDTH)/BASEVIDHEIGHT)/vid.width;
@ -5619,6 +5614,32 @@ void HWR_SetViewSize(void)
HWD.pfnFlushScreenTextures();
}
// -------------------+
// HWR_ShiftViewPort : offset viewport according to current split
// -------------------+
static void HWR_ShiftViewPort(void)
{
gl_centerx = gl_basecenterx;
gl_viewwindowx = gl_baseviewwindowx;
gl_windowcenterx = gl_basewindowcenterx;
gl_centery = gl_basecentery;
gl_viewwindowy = gl_baseviewwindowy;
gl_windowcentery = gl_basewindowcentery;
if (viewssnum > ( r_splitscreen > 1 ))
{
gl_viewwindowy += gl_viewheight;
gl_windowcentery += gl_viewheight;
}
if (r_splitscreen > 1 && viewssnum & 1)
{
gl_viewwindowx += gl_viewwidth;
gl_windowcenterx += gl_viewwidth;
}
}
// Set view aiming, for the sky dome, the skybox,
// and the normal view, all with a single function.
static void HWR_SetTransformAiming(FTransform *trans, player_t *player, boolean skybox)
@ -5670,14 +5691,7 @@ void HWR_RenderSkyboxView(player_t *player)
dup_viewangle = viewangle;
// set window position
gl_centery = gl_basecentery;
gl_viewwindowy = gl_baseviewwindowy;
gl_windowcentery = gl_basewindowcentery;
if (viewssnum == 1)
{
gl_viewwindowy += (vid.height/2);
gl_windowcentery += (vid.height/2);
}
HWR_ShiftViewPort();
// check for new console commands.
NetUpdate();
@ -5878,14 +5892,7 @@ void HWR_RenderPlayerView(void)
dup_viewangle = viewangle;
// set window position
gl_centery = gl_basecentery;
gl_viewwindowy = gl_baseviewwindowy;
gl_windowcentery = gl_basewindowcentery;
if (viewssnum == 1)
{
gl_viewwindowy += (vid.height/2);
gl_windowcentery += (vid.height/2);
}
HWR_ShiftViewPort();
// check for new console commands.
NetUpdate();

2
src/hardware/r_opengl/r_opengl.c
View file

@ -2848,7 +2848,7 @@ EXPORT void HWRAPI(SetTransform) (FTransform *stransform)
pglRotatef(stransform->angley+270.0f, 0.0f, 1.0f, 0.0f);
pglTranslatef(-stransform->x, -stransform->z, -stransform->y);
special_splitscreen = stransform->splitscreen;
special_splitscreen = (stransform->splitscreen == 1);
shearing = stransform->shearing;
}
else