new cvar: r_font_nonpoweroftwo (to save GPU VRAM for fonts)

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@11113 d7cf8633-e32d-0410-b094-e92efae38249
::stable-branch::merge=b4e6e00b1b6188b776ac66003d00bf23ff0fb5b5

diff --git a/ft2.c b/ft2.c
index 8648c6415dfcf50b9828e86bdc6440bb971f6e5f..ab0e0d62c8e363e06a1eaa90e9516dc1ab191d27 100644 (file)
--- a/ft2.c
+++ b/ft2.c
@@ -39,6 +39,7 @@ cvar_t r_font_size_snapping = {CVAR_SAVE, "r_font_size_snapping", "1", "stick to
 cvar_t r_font_kerning = {CVAR_SAVE, "r_font_kerning", "1", "Use kerning if available"};
 cvar_t r_font_diskcache = {CVAR_SAVE, "r_font_diskcache", "0", "save font textures to disk for future loading rather than generating them every time"};
 cvar_t r_font_compress = {CVAR_SAVE, "r_font_compress", "0", "use texture compression on font textures to save video memory"};
+cvar_t r_font_nonpoweroftwo = {CVAR_SAVE, "r_font_nonpoweroftwo", "0", "use nonpoweroftwo textures for font (saves memory, slower)"};
 cvar_t developer_font = {CVAR_SAVE, "developer_font", "0", "prints debug messages about fonts"};
 
 /*
@@ -334,6 +335,7 @@ void font_newmap(void)
 
 void Font_Init(void)
 {
+       Cvar_RegisterVariable(&r_font_nonpoweroftwo);
        Cvar_RegisterVariable(&r_font_disable_freetype);
        Cvar_RegisterVariable(&r_font_use_alpha_textures);
        Cvar_RegisterVariable(&r_font_size_snapping);
@@ -828,7 +830,9 @@ static qboolean Font_LoadSize(ft2_font_t *font, float size, qboolean check_only)
 
        memset(&temp, 0, sizeof(temp));
        temp.size = size;
-       temp.glyphSize = CeilPowerOf2(size*2 + max(gpad_l + gpad_r, gpad_t + gpad_b));
+       temp.glyphSize = size*2 + max(gpad_l + gpad_r, gpad_t + gpad_b);
+       if (!(r_font_nonpoweroftwo.integer && vid.support.arb_texture_non_power_of_two))
+               temp.glyphSize = CeilPowerOf2(temp.glyphSize);
        temp.sfx = (1.0/64.0)/(double)size;
        temp.sfy = (1.0/64.0)/(double)size;
        temp.intSize = -1; // negative value: LoadMap must search now :)