fsaa support, borrowing from uhexen2. cvar is vid_multisample, cmdline arg is -fsaa (inconsistent..)
git-svn-id: svn+ssh://svn.code.sf.net/p/quakespasm/code/trunk@962 af15c1b1-3010-417e-b628-4374ebc0bcbd
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ewasylishen
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0e53d9edfd
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53c7b3a1e8
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@ -41,6 +41,13 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#define DEFAULT_SDL_FLAGS SDL_OPENGL
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/* multisampling was added to SDL beginning from v1.2.6 */
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#define SDL_VER_WITH_MULTISAMPLING (SDL_VERSIONNUM(1,2,6))
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#if SDL_COMPILEDVERSION < SDL_VER_WITH_MULTISAMPLING
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#define SDL_GL_MULTISAMPLEBUFFERS (SDL_GL_ACCUM_ALPHA_SIZE+2)
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#define SDL_GL_MULTISAMPLESAMPLES (SDL_GL_ACCUM_ALPHA_SIZE+3)
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#endif /* SDL_VER_WITH_MULTISAMPLING */
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typedef struct {
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int width;
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int height;
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@ -95,6 +102,7 @@ static cvar_t vid_width = {"vid_width", "800", CVAR_ARCHIVE}; // QuakeSpasm, wa
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static cvar_t vid_height = {"vid_height", "600", CVAR_ARCHIVE}; // QuakeSpasm, was 480
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static cvar_t vid_bpp = {"vid_bpp", "16", CVAR_ARCHIVE};
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static cvar_t vid_vsync = {"vid_vsync", "0", CVAR_ARCHIVE};
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static cvar_t vid_multisample = {"vid_multisample", "0", CVAR_ARCHIVE}; // QuakeSpasm
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//johnfitz
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cvar_t vid_gamma = {"gamma", "1", CVAR_ARCHIVE}; //johnfitz -- moved here from view.c
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@ -118,6 +126,7 @@ static unsigned short vid_sysgamma_blue[256];
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#endif
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static qboolean gammaworks = false; // whether hw-gamma works
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static qboolean sdl_has_multisample = false; // whether linked sdl version supports multisampling
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/*
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================
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@ -255,7 +264,7 @@ static qboolean VID_ValidMode (int width, int height, int bpp, qboolean fullscre
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VID_SetMode
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================
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*/
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static int VID_SetMode (int width, int height, int bpp, qboolean fullscreen)
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static int VID_SetMode (int width, int height, int bpp, int multisample, qboolean fullscreen)
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{
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int temp;
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Uint32 flags = DEFAULT_SDL_FLAGS;
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@ -289,7 +298,26 @@ static int VID_SetMode (int width, int height, int bpp, qboolean fullscreen)
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else depthbits = 24;
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SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, depthbits);
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//
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// multisampling
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//
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if (multisample && !sdl_has_multisample)
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{
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multisample = 0;
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Con_SafePrintf ("SDL ver < %d, multisampling disabled\n", SDL_VER_WITH_MULTISAMPLING);
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}
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if (sdl_has_multisample)
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{
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SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, multisample > 0 ? 1 : 0);
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SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, multisample);
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}
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draw_context = SDL_SetVideoMode(width, height, bpp, flags);
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if (!draw_context) { // scale back multisampling
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SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 0);
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SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, 0);
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draw_context = SDL_SetVideoMode(width, height, bpp, flags);
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}
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if (!draw_context) { // scale back SDL_GL_DEPTH_SIZE
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SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
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draw_context = SDL_SetVideoMode(width, height, bpp, flags);
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@ -310,6 +338,13 @@ static int VID_SetMode (int width, int height, int bpp, qboolean fullscreen)
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if (SDL_GL_GetAttribute(SDL_GL_DEPTH_SIZE, &depthbits) == -1)
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depthbits = 0;
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// read obtained multisample samples
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if (sdl_has_multisample)
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{
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if (SDL_GL_GetAttribute(SDL_GL_MULTISAMPLESAMPLES, &multisample) == -1)
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multisample = 0;
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}
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modestate = draw_context->flags & SDL_FULLSCREEN ? MS_FULLSCREEN : MS_WINDOWED;
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CDAudio_Resume ();
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@ -319,11 +354,12 @@ static int VID_SetMode (int width, int height, int bpp, qboolean fullscreen)
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// fix the leftover Alt from any Alt-Tab or the like that switched us away
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ClearAllStates ();
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Con_SafePrintf ("Video mode %dx%dx%d (%d-bit z-buffer) initialized\n",
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Con_SafePrintf ("Video mode %dx%dx%d (%d-bit z-buffer, %dx multisampling) initialized\n",
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draw_context->w,
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draw_context->h,
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draw_context->format->BitsPerPixel,
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depthbits);
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depthbits,
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multisample);
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vid.recalc_refdef = 1;
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@ -350,7 +386,7 @@ VID_Restart -- johnfitz -- change video modes on the fly
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*/
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static void VID_Restart (void)
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{
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int width, height, bpp;
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int width, height, bpp, multisample;
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qboolean fullscreen;
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if (vid_locked || !vid_changed)
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@ -360,6 +396,7 @@ static void VID_Restart (void)
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height = (int)vid_height.value;
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bpp = (int)vid_bpp.value;
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fullscreen = vid_fullscreen.value ? true : false;
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multisample = (int)vid_multisample.value;
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//
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// validate new mode
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@ -374,7 +411,7 @@ static void VID_Restart (void)
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//
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// set new mode
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//
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VID_SetMode (width, height, bpp, fullscreen);
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VID_SetMode (width, height, bpp, multisample, fullscreen);
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GL_Init ();
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TexMgr_ReloadImages ();
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@ -411,7 +448,7 @@ VID_Test -- johnfitz -- like vid_restart, but asks for confirmation after switch
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*/
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static void VID_Test (void)
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{
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int old_width, old_height, old_bpp, old_fullscreen;
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int old_width, old_height, old_bpp, old_multisample, old_fullscreen;
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if (vid_locked || !vid_changed)
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return;
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@ -421,6 +458,9 @@ static void VID_Test (void)
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old_width = draw_context->w;
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old_height = draw_context->h;
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old_bpp = draw_context->format->BitsPerPixel;
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old_multisample = 0;
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if (sdl_has_multisample)
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SDL_GL_GetAttribute(SDL_GL_MULTISAMPLESAMPLES, &old_multisample);
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old_fullscreen = draw_context->flags & SDL_FULLSCREEN ? true : false;
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VID_Restart ();
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@ -432,6 +472,7 @@ static void VID_Test (void)
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Cvar_SetValueQuick (&vid_width, old_width);
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Cvar_SetValueQuick (&vid_height, old_height);
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Cvar_SetValueQuick (&vid_bpp, old_bpp);
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Cvar_SetValueQuick (&vid_multisample, old_multisample);
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Cvar_SetQuick (&vid_fullscreen, old_fullscreen ? "1" : "0");
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VID_Restart ();
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}
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@ -935,13 +976,15 @@ void VID_Init (void)
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{
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static char vid_center[] = "SDL_VIDEO_CENTERED=center";
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const SDL_VideoInfo *info;
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int width, height, bpp;
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const SDL_version *sdl_version;
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int width, height, bpp, multisample;
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qboolean fullscreen;
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const char *read_vars[] = { "vid_fullscreen",
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"vid_width",
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"vid_height",
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"vid_bpp",
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"vid_vsync" };
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"vid_vsync",
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"vid_multisample" };
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#define num_readvars ( sizeof(read_vars)/sizeof(read_vars[0]) )
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Cvar_RegisterVariable (&vid_fullscreen); //johnfitz
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@ -949,11 +992,13 @@ void VID_Init (void)
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Cvar_RegisterVariable (&vid_height); //johnfitz
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Cvar_RegisterVariable (&vid_bpp); //johnfitz
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Cvar_RegisterVariable (&vid_vsync); //johnfitz
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Cvar_RegisterVariable (&vid_multisample); //QuakeSpasm
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Cvar_SetCallback (&vid_fullscreen, VID_Changed_f);
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Cvar_SetCallback (&vid_width, VID_Changed_f);
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Cvar_SetCallback (&vid_height, VID_Changed_f);
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Cvar_SetCallback (&vid_bpp, VID_Changed_f);
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Cvar_SetCallback (&vid_vsync, VID_Changed_f);
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Cvar_SetCallback (&vid_multisample, VID_Changed_f);
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Cmd_AddCommand ("vid_unlock", VID_Unlock); //johnfitz
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Cmd_AddCommand ("vid_restart", VID_Restart); //johnfitz
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@ -961,6 +1006,11 @@ void VID_Init (void)
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Cmd_AddCommand ("vid_describecurrentmode", VID_DescribeCurrentMode_f);
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Cmd_AddCommand ("vid_describemodes", VID_DescribeModes_f);
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// see if the SDL version we linked to is multisampling-capable
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sdl_version = SDL_Linked_Version();
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if (SDL_VERSIONNUM(sdl_version->major,sdl_version->minor,sdl_version->patch) >= SDL_VER_WITH_MULTISAMPLING)
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sdl_has_multisample = true;
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putenv (vid_center); /* SDL_putenv is problematic in versions <= 1.2.9 */
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if (SDL_InitSubSystem(SDL_INIT_VIDEO) == -1)
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@ -982,6 +1032,7 @@ void VID_Init (void)
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height = (int)vid_height.value;
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bpp = (int)vid_bpp.value;
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fullscreen = (int)vid_fullscreen.value;
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multisample = (int)vid_multisample.value;
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if (COM_CheckParm("-current"))
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{
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@ -1022,6 +1073,14 @@ void VID_Init (void)
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fullscreen = true;
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}
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{
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int p;
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p = COM_CheckParm ("-fsaa");
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if (p && p < com_argc-1)
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multisample = atoi(com_argv[p+1]);
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}
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if (!VID_ValidMode(width, height, bpp, fullscreen))
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{
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width = (int)vid_width.value;
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@ -1048,7 +1107,7 @@ void VID_Init (void)
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// set window icon
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PL_SetWindowIcon();
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VID_SetMode (width, height, bpp, fullscreen);
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VID_SetMode (width, height, bpp, multisample, fullscreen);
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GL_Init ();
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GL_SetupState ();
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@ -1111,7 +1170,7 @@ VID_SyncCvars -- johnfitz -- set vid cvars to match current video mode
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*/
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void VID_SyncCvars (void)
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{
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int swap_control;
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int swap_control, multisample;
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if (draw_context)
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{
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@ -1122,6 +1181,9 @@ void VID_SyncCvars (void)
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if (SDL_GL_GetAttribute(SDL_GL_SWAP_CONTROL, &swap_control) == 0)
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Cvar_SetQuick (&vid_vsync, (swap_control > 0)? "1" : "0");
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if (sdl_has_multisample && SDL_GL_GetAttribute(SDL_GL_MULTISAMPLESAMPLES, &multisample) == 0)
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Cvar_SetValueQuick (&vid_multisample, multisample);
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}
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vid_changed = false;
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@ -1138,6 +1200,7 @@ enum {
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VID_OPT_BPP,
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VID_OPT_FULLSCREEN,
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VID_OPT_VSYNC,
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VID_OPT_MULTISAMPLE,
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VID_OPT_TEST,
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VID_OPT_APPLY,
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VIDEO_OPTIONS_ITEMS
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@ -1316,6 +1379,42 @@ static void VID_Menu_ChooseNextBpp (int dir)
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}
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}
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static int vid_menu_multisamples[] = {0, 8, 4, 2};
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static int vid_menu_nummultisamples = sizeof(vid_menu_multisamples) / sizeof(int);
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/*
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================
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VID_Menu_ChooseNextMultisample
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chooses next antialiasing level in order, then updates the vid_samples cvar
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================
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*/
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static void VID_Menu_ChooseNextMultisample (int dir)
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{
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int i;
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for (i = 0; i < vid_menu_nummultisamples; i++)
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{
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if (vid_menu_multisamples[i] == vid_multisample.value)
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break;
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}
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if (i == vid_menu_nummultisamples) //can't find it in list
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{
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i = 0;
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}
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else
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{
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i += dir;
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if (i >= vid_menu_nummultisamples)
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i = 0;
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else if (i < 0)
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i = vid_menu_nummultisamples-1;
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}
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Cvar_SetValueQuick (&vid_multisample, (float)vid_menu_multisamples[i]);
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}
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/*
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================
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VID_MenuKey
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@ -1355,6 +1454,9 @@ static void VID_MenuKey (int key)
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case VID_OPT_BPP:
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VID_Menu_ChooseNextBpp (1);
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break;
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case VID_OPT_MULTISAMPLE:
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VID_Menu_ChooseNextMultisample (1);
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break;
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case VID_OPT_FULLSCREEN:
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Cbuf_AddText ("toggle vid_fullscreen\n");
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break;
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@ -1376,6 +1478,9 @@ static void VID_MenuKey (int key)
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case VID_OPT_BPP:
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VID_Menu_ChooseNextBpp (-1);
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break;
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case VID_OPT_MULTISAMPLE:
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VID_Menu_ChooseNextMultisample (-1);
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break;
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case VID_OPT_FULLSCREEN:
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Cbuf_AddText ("toggle vid_fullscreen\n");
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break;
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@ -1397,6 +1502,9 @@ static void VID_MenuKey (int key)
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case VID_OPT_BPP:
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VID_Menu_ChooseNextBpp (1);
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break;
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case VID_OPT_MULTISAMPLE:
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VID_Menu_ChooseNextMultisample (1);
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break;
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case VID_OPT_FULLSCREEN:
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Cbuf_AddText ("toggle vid_fullscreen\n");
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break;
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@ -1464,6 +1572,10 @@ static void VID_MenuDraw (void)
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M_Print (16, y, " Color depth");
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M_Print (184, y, va("%i", (int)vid_bpp.value));
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break;
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case VID_OPT_MULTISAMPLE:
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M_Print (16, y, " Antialiasing");
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M_Print (184, y, va("%ix", (int)vid_multisample.value));
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break;
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case VID_OPT_FULLSCREEN:
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M_Print (16, y, " Fullscreen");
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M_DrawCheckbox (184, y, (int)vid_fullscreen.value);
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