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Try to reduce blending artifacts at edges

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git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@859 fc73d0e0-1445-4013-8a0c-d673dee63da5
This commit is contained in:
Spoike 2005-01-29 02:15:59 +00:00
parent b1c2a6494a
commit 936ecea483
1 changed files with 17 additions and 3 deletions
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20
engine/gl/gl_draw.c
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@ -74,6 +74,8 @@ int char_texture, char_tex2, default_char_texture;
int cs_texture; // crosshair texture
extern int detailtexture;
float char_instep, default_char_instep; //to avoid blending issues
static unsigned cs_data[16*16];
typedef struct
@ -742,6 +744,8 @@ TRACE(("dbg: GLDraw_ReInit: Allocating upload buffers\n"));
}
// now turn them into textures
image_width = 0;
image_height = 0;
TRACE(("dbg: GLDraw_ReInit: looking for conchars\n"));
if (!(char_texture=Mod_LoadReplacementTexture("gfx/conchars.lmp", false, true, false))) //no high res
{
@ -821,6 +825,11 @@ TRACE(("dbg: GLDraw_ReInit: Allocating upload buffers\n"));
char_texture = GL_LoadTexture ("charset", 128, 128, draw_chars, false, true);
}
default_char_texture=char_texture;
//half a pixel
if (image_width)
char_instep = default_char_instep = 0.5f/((image_width+image_height)/2); //you're an idiot if you use non-square conchars
else
char_instep = default_char_instep = 0.5f/(128);
TRACE(("dbg: GLDraw_ReInit: loaded charset\n"));
@ -1174,9 +1183,9 @@ void GLDraw_Character (int x, int y, unsigned int num)
row = num>>4;
col = num&15;
frow = row*0.0625;
fcol = col*0.0625;
size = 0.0625;
frow = row*0.0625+char_instep;
fcol = col*0.0625+char_instep;
size = 0.0625-char_instep*2;
qglEnable(GL_BLEND);
qglDisable(GL_ALPHA_TEST);
@ -1901,7 +1910,12 @@ void GL_Set2D (void)
{
gl_font.modified = 0;
if (!*gl_font.string || !(char_texture=Mod_LoadHiResTexture(va("fonts/%s", gl_font.string), false, true, true)))
{
char_texture = default_char_texture;
char_instep = default_char_instep;
}
else
char_instep = 0.5f/((image_width+image_height)/2);
gl_smoothfont.modified = 1;
}