add r_textcontrast to complement t_textbrightness

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@7927 d7cf8633-e32d-0410-b094-e92efae38249

diff --git a/gl_draw.c b/gl_draw.c
index 9292c38cdc5fc24bd1dc66b442371081eb7745fb..290c85b88a0e06414f01032332167066536f91e7 100644 (file)
--- a/gl_draw.c
+++ b/gl_draw.c
@@ -29,6 +29,7 @@ dp_font_t dp_fonts[MAX_FONTS] = {{0}};
 
 cvar_t r_textshadow = {CVAR_SAVE, "r_textshadow", "0", "draws a shadow on all text to improve readability (note: value controls offset, 1 = 1 pixel, 1.5 = 1.5 pixels, etc)"};
 cvar_t r_textbrightness = {CVAR_SAVE, "r_textbrightness", "0", "additional brightness for text color codes (0 keeps colors as is, 1 makes them all white)"};
+cvar_t r_textcontrast = {CVAR_SAVE, "r_textcontrast", "1", "additional contrast for text color codes (1 keeps colors as is, 1 makes them all black)"};
 
 //=============================================================================
 /* Support Routines */
@@ -714,6 +715,7 @@ void GL_Draw_Init (void)
        int i, j;
        Cvar_RegisterVariable(&r_textshadow);
        Cvar_RegisterVariable(&r_textbrightness);
+       Cvar_RegisterVariable(&r_textcontrast);
        Cmd_AddCommand ("loadfont",LoadFont_f, "loadfont function tganame loads a font; example: loadfont console gfx/veramono; loadfont without arguments lists the available functions");
        R_RegisterModule("GL_Draw", gl_draw_start, gl_draw_shutdown, gl_draw_newmap);
 
@@ -731,7 +733,7 @@ void GL_Draw_Init (void)
                        dpsnprintf(FONT_USER[i].title, sizeof(FONT_USER[i].title), "user%d", j++);
 }
 
-static void _DrawQ_Setup(void)
+void _DrawQ_Setup(void)
 {
        if (r_refdef.draw2dstage)
                return;
@@ -872,9 +874,10 @@ static const vec4_t string_colors[] =
 
 static void DrawQ_GetTextColor(float color[4], int colorindex, float r, float g, float b, float a, qboolean shadow)
 {
-       float v = r_textbrightness.value;
+       float C = r_textcontrast.value;
+       float B = r_textbrightness.value;
        Vector4Copy(string_colors[colorindex], color);
-       Vector4Set(color, (color[0] * (1-v) + v) * r, (color[1] * (1-v) + v) * g, (color[2] * (1-v) + v) * b, color[3] * a);
+       Vector4Set(color, (color[0] * C + B) * r, (color[1] * C + B) * g, (color[2] * C + B) * b, color[3] * a);
        if (shadow)
        {
                float shadowalpha = color[0]+color[1]+color[2] * 0.8;