]> de.git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - gl_draw.c
Make work DrawQ_SetClipArea in stereo view modes or when viewsize is lower than 100
[xonotic/darkplaces.git] / gl_draw.c
index 705253b00a30810808935160790f2fd6ff89082d..eae39c7490bc1c03c7a29d5775a07eac5663ebc7 100644 (file)
--- a/gl_draw.c
+++ b/gl_draw.c
@@ -42,6 +42,8 @@ cvar_t r_font_postprocess_shadow_y = {CVAR_SAVE, "r_font_postprocess_shadow_y",
 cvar_t r_font_postprocess_shadow_z = {CVAR_SAVE, "r_font_postprocess_shadow_z", "0", "font shadow Z shift amount, applied during blurring"};
 cvar_t r_font_hinting = {CVAR_SAVE, "r_font_hinting", "3", "0 = no hinting, 1 = light autohinting, 2 = full autohinting, 3 = full hinting"};
 cvar_t r_font_antialias = {CVAR_SAVE, "r_font_antialias", "1", "0 = monochrome, 1 = grey" /* , 2 = rgb, 3 = bgr" */};
+cvar_t r_nearest_2d = {CVAR_SAVE, "r_nearest_2d", "0", "use nearest filtering on all 2d textures (including conchars)"};
+cvar_t r_nearest_conchars = {CVAR_SAVE, "r_nearest_conchars", "0", "use nearest filtering on conchars texture"};
 
 extern cvar_t v_glslgamma;
 
@@ -109,7 +111,7 @@ static rtexture_t *draw_generateconchars(void)
        Image_WriteTGABGRA ("gfx/generated_conchars.tga", 256, 256, data);
 #endif
 
-       tex = R_LoadTexture2D(drawtexturepool, "conchars", 256, 256, data, TEXTYPE_BGRA, TEXF_ALPHA, -1, NULL);
+       tex = R_LoadTexture2D(drawtexturepool, "conchars", 256, 256, data, TEXTYPE_BGRA, TEXF_ALPHA | (r_nearest_conchars.integer ? TEXF_FORCENEAREST : 0), -1, NULL);
        Mem_Free(data);
        return tex;
 }
@@ -323,19 +325,29 @@ cachepic_t *Draw_CachePic_Flags(const char *path, unsigned int cachepicflags)
        qboolean ddshasalpha;
        float ddsavgcolor[4];
        qboolean loaded = false;
+       char vabuf[1024];
 
        texflags = TEXF_ALPHA;
        if (!(cachepicflags & CACHEPICFLAG_NOCLAMP))
                texflags |= TEXF_CLAMP;
+       if (cachepicflags & CACHEPICFLAG_MIPMAP)
+               texflags |= TEXF_MIPMAP;
        if (!(cachepicflags & CACHEPICFLAG_NOCOMPRESSION) && gl_texturecompression_2d.integer && gl_texturecompression.integer)
                texflags |= TEXF_COMPRESS;
+       if ((cachepicflags & CACHEPICFLAG_NEAREST) || r_nearest_2d.integer)
+               texflags |= TEXF_FORCENEAREST;
 
        // check whether the picture has already been cached
        crc = CRC_Block((unsigned char *)path, strlen(path));
        hashkey = ((crc >> 8) ^ crc) % CACHEPICHASHSIZE;
        for (pic = cachepichash[hashkey];pic;pic = pic->chain)
+       {
                if (!strcmp (path, pic->name))
-                       if(!((pic->texflags ^ texflags) & ~(TEXF_COMPRESS))) // ignore TEXF_COMPRESS when comparing, because fallback pics remove the flag
+               {
+                       // if it was created (or replaced) by Draw_NewPic, just return it
+                       if(pic->flags & CACHEPICFLAG_NEWPIC)
+                               return pic;
+                       if (!((pic->texflags ^ texflags) & ~(TEXF_COMPRESS | TEXF_MIPMAP))) // ignore TEXF_COMPRESS when comparing, because fallback pics remove the flag, and ignore TEXF_MIPMAP because QC specifies that
                        {
                                if(!(cachepicflags & CACHEPICFLAG_NOTPERSISTENT))
                                {
@@ -346,6 +358,8 @@ cachepic_t *Draw_CachePic_Flags(const char *path, unsigned int cachepicflags)
                                }
                                return pic;
                        }
+               }
+       }
 
        if (numcachepics == MAX_CACHED_PICS)
        {
@@ -354,29 +368,38 @@ cachepic_t *Draw_CachePic_Flags(const char *path, unsigned int cachepicflags)
                return cachepics; // return the first one
        }
        pic = cachepics + (numcachepics++);
+       memset(pic, 0, sizeof(*pic));
        strlcpy (pic->name, path, sizeof(pic->name));
        // link into list
        pic->chain = cachepichash[hashkey];
        cachepichash[hashkey] = pic;
 
 reload:
+       // TODO why does this crash?
+       if(pic->allow_free_tex && pic->tex)
+               R_PurgeTexture(pic->tex);
+
        // check whether it is an dynamic texture (if so, we can directly use its texture handler)
+       pic->flags = cachepicflags;
        pic->tex = CL_GetDynTexture( path );
        // if so, set the width/height, too
        if( pic->tex ) {
+               pic->allow_free_tex = false;
                pic->width = R_TextureWidth(pic->tex);
                pic->height = R_TextureHeight(pic->tex);
                // we're done now (early-out)
                return pic;
        }
 
+       pic->allow_free_tex = true;
+
        pic->hasalpha = true; // assume alpha unless we know it has none
        pic->texflags = texflags;
        pic->autoload = (cachepicflags & CACHEPICFLAG_NOTPERSISTENT);
        pic->lastusedframe = draw_frame;
 
        // load a high quality image from disk if possible
-       if (!loaded && r_texture_dds_load.integer != 0 && (pic->tex = R_LoadTextureDDSFile(drawtexturepool, va("dds/%s.dds", pic->name), pic->texflags, &ddshasalpha, ddsavgcolor, 0)))
+       if (!loaded && r_texture_dds_load.integer != 0 && (pic->tex = R_LoadTextureDDSFile(drawtexturepool, va(vabuf, sizeof(vabuf), "dds/%s.dds", pic->name), vid.sRGB2D, pic->texflags, &ddshasalpha, ddsavgcolor, 0, false)))
        {
                // note this loads even if autoload is true, otherwise we can't get the width/height
                loaded = true;
@@ -405,8 +428,10 @@ reload:
                if (!pic->autoload)
                {
                        pic->tex = R_LoadTexture2D(drawtexturepool, pic->name, image_width, image_height, pixels, vid.sRGB2D ? TEXTYPE_SRGB_BGRA : TEXTYPE_BGRA, pic->texflags & (pic->hasalpha ? ~0 : ~TEXF_ALPHA), -1, NULL);
+#ifndef USE_GLES2
                        if (r_texture_dds_save.integer && qglGetCompressedTexImageARB && pic->tex)
-                               R_SaveTextureDDSFile(pic->tex, va("dds/%s.dds", pic->name), r_texture_dds_save.integer < 2, pic->hasalpha);
+                               R_SaveTextureDDSFile(pic->tex, va(vabuf, sizeof(vabuf), "dds/%s.dds", pic->name), r_texture_dds_save.integer < 2, pic->hasalpha);
+#endif
                }
        }
        if (!loaded)
@@ -421,7 +446,7 @@ reload:
        // show up the right size in the menu even if they were replaced with
        // higher or lower resolution versions
        dpsnprintf(lmpname, sizeof(lmpname), "%s.lmp", pic->name);
-       if (!strncmp(pic->name, "gfx/", 4) && (lmpdata = FS_LoadFile(lmpname, tempmempool, false, &lmpsize)))
+       if ((!strncmp(pic->name, "gfx/", 4) || (gamemode == GAME_BLOODOMNICIDE && !strncmp(pic->name, "locale/", 6))) && (lmpdata = FS_LoadFile(lmpname, tempmempool, false, &lmpsize)))
        {
                if (developer_loading.integer)
                        Con_Printf("loading lump \"%s\"\n", pic->name);
@@ -480,6 +505,7 @@ reload:
                pic->tex = draw_generatepic(pic->name, (cachepicflags & CACHEPICFLAG_QUIET) != 0);
                pic->width = R_TextureWidth(pic->tex);
                pic->height = R_TextureHeight(pic->tex);
+               pic->allow_free_tex = (pic->tex != r_texture_notexture);
        }
 
        return pic;
@@ -492,25 +518,30 @@ cachepic_t *Draw_CachePic (const char *path)
 
 rtexture_t *Draw_GetPicTexture(cachepic_t *pic)
 {
+       char vabuf[1024];
        if (pic->autoload && !pic->tex)
        {
                if (pic->tex == NULL && r_texture_dds_load.integer != 0)
                {
                        qboolean ddshasalpha;
                        float ddsavgcolor[4];
-                       pic->tex = R_LoadTextureDDSFile(drawtexturepool, va("dds/%s.dds", pic->name), pic->texflags, &ddshasalpha, ddsavgcolor, 0);
+                       pic->tex = R_LoadTextureDDSFile(drawtexturepool, va(vabuf, sizeof(vabuf), "dds/%s.dds", pic->name), vid.sRGB2D, pic->texflags, &ddshasalpha, ddsavgcolor, 0, false);
                }
                if (pic->tex == NULL)
                {
                        pic->tex = loadtextureimage(drawtexturepool, pic->name, false, pic->texflags, true, vid.sRGB2D);
+#ifndef USE_GLES2
                        if (r_texture_dds_save.integer && qglGetCompressedTexImageARB && pic->tex)
-                               R_SaveTextureDDSFile(pic->tex, va("dds/%s.dds", pic->name), r_texture_dds_save.integer < 2, pic->hasalpha);
+                               R_SaveTextureDDSFile(pic->tex, va(vabuf, sizeof(vabuf), "dds/%s.dds", pic->name), r_texture_dds_save.integer < 2, pic->hasalpha);
+#endif
                }
                if (pic->tex == NULL && !strncmp(pic->name, "gfx/", 4))
                {
                        pic->tex = loadtextureimage(drawtexturepool, pic->name+4, false, pic->texflags, true, vid.sRGB2D);
+#ifndef USE_GLES2
                        if (r_texture_dds_save.integer && qglGetCompressedTexImageARB && pic->tex)
-                               R_SaveTextureDDSFile(pic->tex, va("dds/%s.dds", pic->name), r_texture_dds_save.integer < 2, pic->hasalpha);
+                               R_SaveTextureDDSFile(pic->tex, va(vabuf, sizeof(vabuf), "dds/%s.dds", pic->name), r_texture_dds_save.integer < 2, pic->hasalpha);
+#endif
                }
                if (pic->tex == NULL)
                        pic->tex = draw_generatepic(pic->name, true);
@@ -551,7 +582,7 @@ cachepic_t *Draw_NewPic(const char *picname, int width, int height, int alpha, u
 
        if (pic)
        {
-               if (pic->tex && pic->width == width && pic->height == height)
+               if (pic->flags == CACHEPICFLAG_NEWPIC && pic->tex && pic->width == width && pic->height == height)
                {
                        R_UpdateTexture(pic->tex, pixels_bgra, 0, 0, 0, width, height, 1);
                        return pic;
@@ -559,25 +590,24 @@ cachepic_t *Draw_NewPic(const char *picname, int width, int height, int alpha, u
        }
        else
        {
-               if (pic == NULL)
+               if (numcachepics == MAX_CACHED_PICS)
                {
-                       if (numcachepics == MAX_CACHED_PICS)
-                       {
-                               Con_Printf ("Draw_NewPic: numcachepics == MAX_CACHED_PICS\n");
-                               // FIXME: support NULL in callers?
-                               return cachepics; // return the first one
-                       }
-                       pic = cachepics + (numcachepics++);
-                       strlcpy (pic->name, picname, sizeof(pic->name));
-                       // link into list
-                       pic->chain = cachepichash[hashkey];
-                       cachepichash[hashkey] = pic;
+                       Con_Printf ("Draw_NewPic: numcachepics == MAX_CACHED_PICS\n");
+                       // FIXME: support NULL in callers?
+                       return cachepics; // return the first one
                }
+               pic = cachepics + (numcachepics++);
+               memset(pic, 0, sizeof(*pic));
+               strlcpy (pic->name, picname, sizeof(pic->name));
+               // link into list
+               pic->chain = cachepichash[hashkey];
+               cachepichash[hashkey] = pic;
        }
 
+       pic->flags = CACHEPICFLAG_NEWPIC; // disable texflags checks in Draw_CachePic
        pic->width = width;
        pic->height = height;
-       if (pic->tex)
+       if (pic->allow_free_tex && pic->tex)
                R_FreeTexture(pic->tex);
        pic->tex = R_LoadTexture2D(drawtexturepool, picname, width, height, pixels_bgra, TEXTYPE_BGRA, (alpha ? TEXF_ALPHA : 0), -1, NULL);
        return pic;
@@ -649,20 +679,20 @@ void LoadFont(qboolean override, const char *name, dp_font_t *fnt, float scale,
                        Con_DPrintf("Failed to load font-file for '%s', it will not support as many characters.\n", fnt->texpath);
        }
 
-       fnt->tex = Draw_CachePic_Flags(fnt->texpath, CACHEPICFLAG_QUIET | CACHEPICFLAG_NOCOMPRESSION)->tex;
+       fnt->tex = Draw_CachePic_Flags(fnt->texpath, CACHEPICFLAG_QUIET | CACHEPICFLAG_NOCOMPRESSION | (r_nearest_conchars.integer ? CACHEPICFLAG_NEAREST : 0))->tex;
        if(fnt->tex == r_texture_notexture)
        {
                for (i = 0; i < MAX_FONT_FALLBACKS; ++i)
                {
                        if (!fnt->fallbacks[i][0])
                                break;
-                       fnt->tex = Draw_CachePic_Flags(fnt->fallbacks[i], CACHEPICFLAG_QUIET | CACHEPICFLAG_NOCOMPRESSION)->tex;
+                       fnt->tex = Draw_CachePic_Flags(fnt->fallbacks[i], CACHEPICFLAG_QUIET | CACHEPICFLAG_NOCOMPRESSION | (r_nearest_conchars.integer ? CACHEPICFLAG_NEAREST : 0))->tex;
                        if(fnt->tex != r_texture_notexture)
                                break;
                }
                if(fnt->tex == r_texture_notexture)
                {
-                       fnt->tex = Draw_CachePic_Flags("gfx/conchars", CACHEPICFLAG_NOCOMPRESSION)->tex;
+                       fnt->tex = Draw_CachePic_Flags("gfx/conchars", CACHEPICFLAG_NOCOMPRESSION | (r_nearest_conchars.integer ? CACHEPICFLAG_NEAREST : 0))->tex;
                        strlcpy(widthfile, "gfx/conchars.width", sizeof(widthfile));
                }
                else
@@ -684,7 +714,7 @@ void LoadFont(qboolean override, const char *name, dp_font_t *fnt, float scale,
                ch = 0;
                while(ch < 256)
                {
-                       if(!COM_ParseToken_Simple(&p, false, false))
+                       if(!COM_ParseToken_Simple(&p, false, false, true))
                                return;
 
                        switch(*com_token)
@@ -708,20 +738,20 @@ void LoadFont(qboolean override, const char *name, dp_font_t *fnt, float scale,
                                default:
                                        if(!strcmp(com_token, "extraspacing"))
                                        {
-                                               if(!COM_ParseToken_Simple(&p, false, false))
+                                               if(!COM_ParseToken_Simple(&p, false, false, true))
                                                        return;
                                                extraspacing = atof(com_token);
                                        }
                                        else if(!strcmp(com_token, "scale"))
                                        {
-                                               if(!COM_ParseToken_Simple(&p, false, false))
+                                               if(!COM_ParseToken_Simple(&p, false, false, true))
                                                        return;
                                                fnt->settings.scale = atof(com_token);
                                        }
                                        else
                                        {
                                                Con_Printf("Warning: skipped unknown font property %s\n", com_token);
-                                               if(!COM_ParseToken_Simple(&p, false, false))
+                                               if(!COM_ParseToken_Simple(&p, false, false, true))
                                                        return;
                                        }
                                        break;
@@ -974,6 +1004,7 @@ Draw_Init
 static void gl_draw_start(void)
 {
        int i;
+       char vabuf[1024];
        drawtexturepool = R_AllocTexturePool();
 
        numcachepics = 0;
@@ -984,10 +1015,10 @@ static void gl_draw_start(void)
        // load default font textures
        for(i = 0; i < dp_fonts.maxsize; ++i)
                if (dp_fonts.f[i].title[0])
-                       LoadFont(false, va("gfx/font_%s", dp_fonts.f[i].title), &dp_fonts.f[i], 1, 0);
+                       LoadFont(false, va(vabuf, sizeof(vabuf), "gfx/font_%s", dp_fonts.f[i].title), &dp_fonts.f[i], 1, 0);
 
        // draw the loading screen so people have something to see in the newly opened window
-       SCR_UpdateLoadingScreen(true);
+       SCR_UpdateLoadingScreen(true, true);
 }
 
 static void gl_draw_shutdown(void)
@@ -1019,6 +1050,8 @@ void GL_Draw_Init (void)
        Cvar_RegisterVariable(&r_textshadow);
        Cvar_RegisterVariable(&r_textbrightness);
        Cvar_RegisterVariable(&r_textcontrast);
+       Cvar_RegisterVariable(&r_nearest_2d);
+       Cvar_RegisterVariable(&r_nearest_conchars);
 
        // allocate fonts storage
        fonts_mempool = Mem_AllocPool("FONTS", 0, NULL);
@@ -1044,33 +1077,19 @@ void GL_Draw_Init (void)
        R_RegisterModule("GL_Draw", gl_draw_start, gl_draw_shutdown, gl_draw_newmap, NULL, NULL);
 }
 
-static void _DrawQ_Setup(void)
+static void _DrawQ_Setup(void) // see R_ResetViewRendering2D
 {
-       r_viewport_t viewport;
        if (r_refdef.draw2dstage == 1)
                return;
        r_refdef.draw2dstage = 1;
-       CHECKGLERROR
-       R_Viewport_InitOrtho(&viewport, &identitymatrix, r_refdef.view.x, vid.height - r_refdef.view.y - r_refdef.view.height, r_refdef.view.width, r_refdef.view.height, 0, 0, vid_conwidth.integer, vid_conheight.integer, -10, 100, NULL);
-       R_Mesh_ResetRenderTargets();
-       R_SetViewport(&viewport);
-       GL_ColorMask(r_refdef.view.colormask[0], r_refdef.view.colormask[1], r_refdef.view.colormask[2], 1);
-       GL_DepthFunc(GL_LEQUAL);
-       GL_PolygonOffset(0,0);
-       GL_CullFace(GL_NONE);
-       R_EntityMatrix(&identitymatrix);
 
-       GL_DepthRange(0, 1);
-       GL_PolygonOffset(0, 0);
-       GL_DepthTest(false);
-       GL_Color(1,1,1,1);
+       R_ResetViewRendering2D_Common(0, NULL, NULL, vid_conwidth.integer, vid_conheight.integer);
 }
 
 qboolean r_draw2d_force = false;
-void _DrawQ_SetupAndProcessDrawFlag(int flags, cachepic_t *pic, float alpha)
+static void _DrawQ_SetupAndProcessDrawFlag(int flags, cachepic_t *pic, float alpha)
 {
        _DrawQ_Setup();
-       CHECKGLERROR
        if(!r_draw2d.integer && !r_draw2d_force)
                return;
        DrawQ_ProcessDrawFlag(flags, (alpha < 1) || (pic && pic->hasalpha));
@@ -1132,7 +1151,7 @@ void DrawQ_Pic(float x, float y, cachepic_t *pic, float width, float height, flo
                        width = pic->width;
                if (height == 0)
                        height = pic->height;
-               R_SetupShader_Generic(Draw_GetPicTexture(pic), NULL, GL_MODULATE, 1, true);
+               R_SetupShader_Generic(Draw_GetPicTexture(pic), NULL, GL_MODULATE, 1, (flags & DRAWFLAGS_BLEND) ? false : true, true, false);
 
 #if 0
       // AK07: lets be texel correct on the corners
@@ -1148,7 +1167,7 @@ void DrawQ_Pic(float x, float y, cachepic_t *pic, float width, float height, flo
 #endif
        }
        else
-               R_SetupShader_Generic(NULL, NULL, GL_MODULATE, 1, true);
+               R_SetupShader_Generic_NoTexture((flags & DRAWFLAGS_BLEND) ? false : true, true);
 
        floats[2] = floats[5] = floats[8] = floats[11] = 0;
        floats[0] = floats[9] = x;
@@ -1181,10 +1200,10 @@ void DrawQ_RotPic(float x, float y, cachepic_t *pic, float width, float height,
                        width = pic->width;
                if (height == 0)
                        height = pic->height;
-               R_SetupShader_Generic(Draw_GetPicTexture(pic), NULL, GL_MODULATE, 1, true);
+               R_SetupShader_Generic(Draw_GetPicTexture(pic), NULL, GL_MODULATE, 1, (flags & DRAWFLAGS_BLEND) ? false : true, true, false);
        }
        else
-               R_SetupShader_Generic(NULL, NULL, GL_MODULATE, 1, true);
+               R_SetupShader_Generic_NoTexture((flags & DRAWFLAGS_BLEND) ? false : true, true);
 
        floats[2] = floats[5] = floats[8] = floats[11] = 0;
 
@@ -1226,7 +1245,7 @@ void DrawQ_Fill(float x, float y, float width, float height, float red, float gr
                return;
 
 //     R_Mesh_ResetTextureState();
-       R_SetupShader_Generic(NULL, NULL, GL_MODULATE, 1, true);
+       R_SetupShader_Generic_NoTexture((flags & DRAWFLAGS_BLEND) ? false : true, true);
 
        floats[2] = floats[5] = floats[8] = floats[11] = 0;
        floats[0] = floats[9] = x;
@@ -1368,7 +1387,8 @@ float DrawQ_TextWidth_UntilWidth_TrackColors_Scale(const char *text, size_t *max
        else
                width_of = fnt->width_of;
 
-       for (i = 0;((bytes_left = *maxlen - (text - text_start)) > 0) && *text;)
+       i = 0;
+       while (((bytes_left = *maxlen - (text - text_start)) > 0) && *text)
        {
                size_t i0 = i;
                nextch = ch = u8_getnchar(text, &text, bytes_left);
@@ -1553,7 +1573,7 @@ float DrawQ_String_Scale(float startx, float starty, const char *text, size_t ma
 //     R_Mesh_ResetTextureState();
        if (!fontmap)
                R_Mesh_TexBind(0, fnt->tex);
-       R_SetupShader_Generic(fnt->tex, NULL, GL_MODULATE, 1, true);
+       R_SetupShader_Generic(fnt->tex, NULL, GL_MODULATE, 1, (flags & DRAWFLAGS_BLEND) ? false : true, true, false);
 
        ac = color4f;
        at = texcoord2f;
@@ -1597,7 +1617,7 @@ float DrawQ_String_Scale(float startx, float starty, const char *text, size_t ma
                        y += r_textshadow.value * vid.height / vid_conheight.value;
                }
                */
-               for (i = 0;((bytes_left = maxlen - (text - text_start)) > 0) && *text;)
+               while (((bytes_left = maxlen - (text - text_start)) > 0) && *text)
                {
                        nextch = ch = u8_getnchar(text, &text, bytes_left);
                        i = text - text_start;
@@ -1689,7 +1709,7 @@ float DrawQ_String_Scale(float startx, float starty, const char *text, size_t ma
                                                        at = texcoord2f;
                                                        av = vertex3f;
                                                }
-                                               R_SetupShader_Generic(fnt->tex, NULL, GL_MODULATE, 1, true);
+                                               R_SetupShader_Generic(fnt->tex, NULL, GL_MODULATE, 1, (flags & DRAWFLAGS_BLEND) ? false : true, true, false);
                                                map = ft2_oldstyle_map;
                                        }
                                }
@@ -1698,10 +1718,20 @@ float DrawQ_String_Scale(float startx, float starty, const char *text, size_t ma
                                //thisw = fnt->width_of[num];
                                thisw = fnt->width_of[ch];
                                // FIXME make these smaller to just include the occupied part of the character for slightly faster rendering
-                               s = (ch & 15)*0.0625f + (0.5f / tw);
-                               t = (ch >> 4)*0.0625f + (0.5f / th);
-                               u = 0.0625f * thisw - (1.0f / tw);
-                               v = 0.0625f - (1.0f / th);
+                               if (r_nearest_conchars.integer)
+                               {
+                                       s = (ch & 15)*0.0625f;
+                                       t = (ch >> 4)*0.0625f;
+                                       u = 0.0625f * thisw;
+                                       v = 0.0625f;
+                               }
+                               else
+                               {
+                                       s = (ch & 15)*0.0625f + (0.5f / tw);
+                                       t = (ch >> 4)*0.0625f + (0.5f / th);
+                                       u = 0.0625f * thisw - (1.0f / tw);
+                                       v = 0.0625f - (1.0f / th);
+                               }
                                ac[ 0] = DrawQ_Color[0];ac[ 1] = DrawQ_Color[1];ac[ 2] = DrawQ_Color[2];ac[ 3] = DrawQ_Color[3];
                                ac[ 4] = DrawQ_Color[0];ac[ 5] = DrawQ_Color[1];ac[ 6] = DrawQ_Color[2];ac[ 7] = DrawQ_Color[3];
                                ac[ 8] = DrawQ_Color[0];ac[ 9] = DrawQ_Color[1];ac[10] = DrawQ_Color[2];ac[11] = DrawQ_Color[3];
@@ -1758,7 +1788,7 @@ float DrawQ_String_Scale(float startx, float starty, const char *text, size_t ma
                                                        break;
                                                }
                                        }
-                                       R_SetupShader_Generic(map->pic->tex, NULL, GL_MODULATE, 1, true);
+                                       R_SetupShader_Generic(map->pic->tex, NULL, GL_MODULATE, 1, (flags & DRAWFLAGS_BLEND) ? false : true, true, false);
                                }
 
                                mapch = ch - map->start;
@@ -1902,10 +1932,10 @@ void DrawQ_SuperPic(float x, float y, cachepic_t *pic, float width, float height
                        width = pic->width;
                if (height == 0)
                        height = pic->height;
-               R_SetupShader_Generic(Draw_GetPicTexture(pic), NULL, GL_MODULATE, 1, true);
+               R_SetupShader_Generic(Draw_GetPicTexture(pic), NULL, GL_MODULATE, 1, (flags & (DRAWFLAGS_BLEND | DRAWFLAG_NOGAMMA)) ? false : true, true, false);
        }
        else
-               R_SetupShader_Generic(NULL, NULL, GL_MODULATE, 1, true);
+               R_SetupShader_Generic_NoTexture((flags & (DRAWFLAGS_BLEND | DRAWFLAG_NOGAMMA)) ? false : true, true);
 
        floats[2] = floats[5] = floats[8] = floats[11] = 0;
        floats[0] = floats[9] = x;
@@ -1928,13 +1958,12 @@ void DrawQ_SuperPic(float x, float y, cachepic_t *pic, float width, float height
 void DrawQ_Mesh (drawqueuemesh_t *mesh, int flags, qboolean hasalpha)
 {
        _DrawQ_Setup();
-       CHECKGLERROR
        if(!r_draw2d.integer && !r_draw2d_force)
                return;
        DrawQ_ProcessDrawFlag(flags, hasalpha);
 
 //     R_Mesh_ResetTextureState();
-       R_SetupShader_Generic(mesh->texture, NULL, GL_MODULATE, 1, true);
+       R_SetupShader_Generic(mesh->texture, NULL, GL_MODULATE, 1, (flags & DRAWFLAGS_BLEND) ? false : true, true, false);
 
        R_Mesh_PrepareVertices_Generic_Arrays(mesh->num_vertices, mesh->data_vertex3f, mesh->data_color4f, mesh->data_texcoord2f);
        R_Mesh_Draw(0, mesh->num_vertices, 0, mesh->num_triangles, mesh->data_element3i, NULL, 0, mesh->data_element3s, NULL, 0);
@@ -1942,8 +1971,6 @@ void DrawQ_Mesh (drawqueuemesh_t *mesh, int flags, qboolean hasalpha)
 
 void DrawQ_LineLoop (drawqueuemesh_t *mesh, int flags)
 {
-       int num;
-
        _DrawQ_SetupAndProcessDrawFlag(flags, NULL, 1);
        if(!r_draw2d.integer && !r_draw2d_force)
                return;
@@ -1954,16 +1981,21 @@ void DrawQ_LineLoop (drawqueuemesh_t *mesh, int flags)
        case RENDERPATH_GL11:
        case RENDERPATH_GL13:
        case RENDERPATH_GL20:
-               CHECKGLERROR
-               qglBegin(GL_LINE_LOOP);
-               for (num = 0;num < mesh->num_vertices;num++)
+#ifndef USE_GLES2
                {
-                       if (mesh->data_color4f)
-                               GL_Color(mesh->data_color4f[num*4+0], mesh->data_color4f[num*4+1], mesh->data_color4f[num*4+2], mesh->data_color4f[num*4+3]);
-                       qglVertex2f(mesh->data_vertex3f[num*3+0], mesh->data_vertex3f[num*3+1]);
+                       int num;
+                       CHECKGLERROR
+                       qglBegin(GL_LINE_LOOP);
+                       for (num = 0;num < mesh->num_vertices;num++)
+                       {
+                               if (mesh->data_color4f)
+                                       GL_Color(mesh->data_color4f[num*4+0], mesh->data_color4f[num*4+1], mesh->data_color4f[num*4+2], mesh->data_color4f[num*4+3]);
+                               qglVertex2f(mesh->data_vertex3f[num*3+0], mesh->data_vertex3f[num*3+1]);
+                       }
+                       qglEnd();
+                       CHECKGLERROR
                }
-               qglEnd();
-               CHECKGLERROR
+#endif
                break;
        case RENDERPATH_D3D9:
                //Con_DPrintf("FIXME D3D9 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
@@ -1991,13 +2023,14 @@ void DrawQ_Line (float width, float x1, float y1, float x2, float y2, float r, f
        if(!r_draw2d.integer && !r_draw2d_force)
                return;
 
-       R_SetupShader_Generic(NULL, NULL, GL_MODULATE, 1, true);
+       R_SetupShader_Generic_NoTexture((flags & DRAWFLAGS_BLEND) ? false : true, true);
 
        switch(vid.renderpath)
        {
        case RENDERPATH_GL11:
        case RENDERPATH_GL13:
        case RENDERPATH_GL20:
+#ifndef USE_GLES2
                CHECKGLERROR
 
                //qglLineWidth(width);CHECKGLERROR
@@ -2009,6 +2042,7 @@ void DrawQ_Line (float width, float x1, float y1, float x2, float y2, float r, f
                qglVertex2f(x2, y2);
                qglEnd();
                CHECKGLERROR
+#endif
                break;
        case RENDERPATH_D3D9:
                //Con_DPrintf("FIXME D3D9 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
@@ -2029,14 +2063,8 @@ void DrawQ_Line (float width, float x1, float y1, float x2, float y2, float r, f
        }
 }
 
-void DrawQ_Lines (float width, int numlines, const float *vertex3f, const float *color4f, int flags)
+void DrawQ_Lines (float width, int numlines, int flags, qboolean hasalpha)
 {
-       int i;
-       qboolean hasalpha = false;
-       for (i = 0;i < numlines*2;i++)
-               if (color4f[i*4+3] < 1.0f)
-                       hasalpha = true;
-
        _DrawQ_SetupAndProcessDrawFlag(flags, NULL, hasalpha ? 0.5f : 1.0f);
 
        if(!r_draw2d.integer && !r_draw2d_force)
@@ -2049,12 +2077,11 @@ void DrawQ_Lines (float width, int numlines, const float *vertex3f, const float
        case RENDERPATH_GL20:
                CHECKGLERROR
 
-               R_SetupShader_Generic(NULL, NULL, GL_MODULATE, 1, true);
+               R_SetupShader_Generic_NoTexture((flags & DRAWFLAGS_BLEND) ? false : true, true);
 
                //qglLineWidth(width);CHECKGLERROR
 
                CHECKGLERROR
-               R_Mesh_PrepareVertices_Generic_Arrays(numlines*2, vertex3f, color4f, NULL);
                qglDrawArrays(GL_LINES, 0, numlines*2);
                CHECKGLERROR
                break;
@@ -2084,10 +2111,10 @@ void DrawQ_SetClipArea(float x, float y, float width, float height)
 
        // We have to convert the con coords into real coords
        // OGL uses top to bottom
-       ix = (int)(0.5 + x * ((float)vid.width / vid_conwidth.integer));
-       iy = (int)(0.5 + y * ((float) vid.height / vid_conheight.integer));
-       iw = (int)(0.5 + (x+width) * ((float)vid.width / vid_conwidth.integer)) - ix;
-       ih = (int)(0.5 + (y+height) * ((float) vid.height / vid_conheight.integer)) - iy;
+       ix = (int)(0.5 + x * ((float)r_refdef.view.width / vid_conwidth.integer)) + r_refdef.view.x;
+       iy = (int)(0.5 + y * ((float)r_refdef.view.height / vid_conheight.integer)) + r_refdef.view.y;
+       iw = (int)(0.5 + width * ((float)r_refdef.view.width / vid_conwidth.integer));
+       ih = (int)(0.5 + height * ((float)r_refdef.view.height / vid_conheight.integer));
        switch(vid.renderpath)
        {
        case RENDERPATH_GL11:
@@ -2154,11 +2181,41 @@ void R_DrawGamma(void)
        }
        // all the blends ignore depth
 //     R_Mesh_ResetTextureState();
-       R_SetupShader_Generic(NULL, NULL, GL_MODULATE, 1, true);
+       R_SetupShader_Generic_NoTexture(true, true);
        GL_DepthMask(true);
        GL_DepthRange(0, 1);
        GL_PolygonOffset(0, 0);
        GL_DepthTest(false);
+
+       // interpretation of brightness and contrast:
+       //   color range := brightness .. (brightness + contrast)
+       // i.e. "c *= contrast; c += brightness"
+       // plausible values for brightness thus range from -contrast to 1
+
+       // apply pre-brightness (subtractive brightness, for where contrast was >= 1)
+       if (vid.support.ext_blend_subtract)
+       {
+               if (v_color_enable.integer)
+               {
+                       c[0] = -v_color_black_r.value / v_color_white_r.value;
+                       c[1] = -v_color_black_g.value / v_color_white_g.value;
+                       c[2] = -v_color_black_b.value / v_color_white_b.value;
+               }
+               else
+                       c[0] = c[1] = c[2] = -v_brightness.value / v_contrast.value;
+               if (c[0] >= 0.01f || c[1] >= 0.01f || c[2] >= 0.01f)
+               {
+                       // need SUBTRACTIVE blending to do this!
+                       GL_BlendEquationSubtract(true);
+                       GL_BlendFunc(GL_ONE, GL_ONE);
+                       GL_Color(c[0], c[1], c[2], 1);
+                       R_Mesh_PrepareVertices_Generic_Arrays(3, blendvertex3f, NULL, NULL);
+                       R_Mesh_Draw(0, 3, 0, 1, polygonelement3i, NULL, 0, polygonelement3s, NULL, 0);
+                       GL_BlendEquationSubtract(false);
+               }
+       }
+
+       // apply contrast
        if (v_color_enable.integer)
        {
                c[0] = v_color_white_r.value;
@@ -2167,17 +2224,32 @@ void R_DrawGamma(void)
        }
        else
                c[0] = c[1] = c[2] = v_contrast.value;
-       if (c[0] >= 1.01f || c[1] >= 1.01f || c[2] >= 1.01f)
+       if (c[0] >= 1.003f || c[1] >= 1.003f || c[2] >= 1.003f)
        {
                GL_BlendFunc(GL_DST_COLOR, GL_ONE);
-               while (c[0] >= 1.01f || c[1] >= 1.01f || c[2] >= 1.01f)
+               while (c[0] >= 1.003f || c[1] >= 1.003f || c[2] >= 1.003f)
                {
-                       GL_Color(c[0] - 1, c[1] - 1, c[2] - 1, 1);
+                       float cc[4];
+                       cc[0] = bound(0, c[0] - 1, 1);
+                       cc[1] = bound(0, c[1] - 1, 1);
+                       cc[2] = bound(0, c[2] - 1, 1);
+                       GL_Color(cc[0], cc[1], cc[2], 1);
                        R_Mesh_PrepareVertices_Generic_Arrays(3, blendvertex3f, NULL, NULL);
                        R_Mesh_Draw(0, 3, 0, 1, polygonelement3i, NULL, 0, polygonelement3s, NULL, 0);
-                       VectorScale(c, 0.5, c);
+                       c[0] /= 1 + cc[0];
+                       c[1] /= 1 + cc[1];
+                       c[2] /= 1 + cc[2];
                }
        }
+       if (c[0] <= 0.997f || c[1] <= 0.997f || c[2] <= 0.997f)
+       {
+               GL_BlendFunc(GL_DST_COLOR, GL_ZERO);
+               GL_Color(c[0], c[1], c[2], 1);
+               R_Mesh_PrepareVertices_Generic_Arrays(3, blendvertex3f, NULL, NULL);
+               R_Mesh_Draw(0, 3, 0, 1, polygonelement3i, NULL, 0, polygonelement3s, NULL, 0);
+       }
+
+       // apply post-brightness (additive brightness, for where contrast was <= 1)
        if (v_color_enable.integer)
        {
                c[0] = v_color_black_r.value;
@@ -2189,7 +2261,7 @@ void R_DrawGamma(void)
        if (c[0] >= 0.01f || c[1] >= 0.01f || c[2] >= 0.01f)
        {
                GL_BlendFunc(GL_ONE, GL_ONE);
-               GL_Color(c[0] - 1, c[1] - 1, c[2] - 1, 1);
+               GL_Color(c[0], c[1], c[2], 1);
                R_Mesh_PrepareVertices_Generic_Arrays(3, blendvertex3f, NULL, NULL);
                R_Mesh_Draw(0, 3, 0, 1, polygonelement3i, NULL, 0, polygonelement3s, NULL, 0);
        }