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finally fixed the ugly font rendering

rust-rewrite
Patrick Cleavelin 2024-01-26 02:31:25 -06:00
parent de908cfe06
commit ccfdc2e325
1 changed files with 18 additions and 16 deletions
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34
src/core/gfx.odin
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@ -6,7 +6,7 @@ import "vendor:sdl2/ttf"
import "../theme" import "../theme"
scale :: 1; scale :: 2;
start_char :: ' '; start_char :: ' ';
end_char :: '~'; end_char :: '~';
@ -26,9 +26,10 @@ gen_font_atlas :: proc(state: ^State, path: cstring) -> FontAtlas {
// FIXME: check if this failed // FIXME: check if this failed
font = ttf.OpenFont(path, font_height), font = ttf.OpenFont(path, font_height),
} }
ttf.SetFontKerning(atlas.font, false);
ttf.SetFontStyle(atlas.font, ttf.STYLE_NORMAL); ttf.SetFontStyle(atlas.font, ttf.STYLE_NORMAL);
ttf.SetFontOutline(atlas.font, 0);
// NOTE: not sure if I like the look of this or not yet
// ttf.SetFontHinting(atlas.font, ttf.HINTING_MONO);
minx, maxx, miny, maxy: i32; minx, maxx, miny, maxy: i32;
advanced: i32; advanced: i32;
@ -45,20 +46,14 @@ gen_font_atlas :: proc(state: ^State, path: cstring) -> FontAtlas {
atlas.max_height = int(height); atlas.max_height = int(height);
} }
// if atlas.max_width%2 != 0 {
// atlas.max_width += 1;
// }
} }
font_width := i32(atlas.max_width); font_width := i32(atlas.max_width);
font_height = i32(atlas.max_height); font_height = i32(atlas.max_height);
state.source_font_width = int(font_width/scale);// int(font_width/scale); state.source_font_width = int(font_width/scale);
state.source_font_height = int(font_height/scale);//int(font_height/scale); state.source_font_height = int(font_height/scale);
//fmt.println("font_width:", font_width, "font height:", font_height);
//state.source_font_width = int(f32(font_width)/f32(scale));
temp_surface: ^sdl2.Surface; temp_surface: ^sdl2.Surface;
sdl2.SetHint(sdl2.HINT_RENDER_SCALE_QUALITY, "2");
// FIXME: check if this failed // FIXME: check if this failed
font_surface := sdl2.CreateRGBSurface(0, font_width * (end_char-start_char + 1), font_height, 32, 0xff000000, 0x00ff0000, 0x0000ff00, 0x000000ff); font_surface := sdl2.CreateRGBSurface(0, font_width * (end_char-start_char + 1), font_height, 32, 0xff000000, 0x00ff0000, 0x0000ff00, 0x000000ff);
@ -66,21 +61,30 @@ gen_font_atlas :: proc(state: ^State, path: cstring) -> FontAtlas {
white := sdl2.Color { 0xff, 0xff, 0xff, 0xff }; white := sdl2.Color { 0xff, 0xff, 0xff, 0xff };
for char, index in start_char..=end_char { for char, index in start_char..=end_char {
// ttf.GlyphMetrics32(atlas.font, char, &minx, &maxx, &miny, &maxy, &advanced);
rect.x = i32(index) * font_width; rect.x = i32(index) * font_width;
rect.y = 0;//-font_height/8; rect.y = 0;
// FIXME: check if this failed // FIXME: check if this failed
temp_surface = ttf.RenderGlyph32_Blended(atlas.font, char, white); temp_surface = ttf.RenderGlyph32_Blended(atlas.font, char, white);
// NOTE(pcleavelin): holy schmoley batman, it took hours of researching to find out
// that the way to properly blend the texture atlas WAS TO DISABLE BLENDING!
// and of course it's ONE GUY on a forum that has the answer, but it's for some
// reason not even listed on the first page of Google when you search for:
// "sdl_ttf rendering antialiasing"
//
// But the reason why this is needed (I /think/) is because you want to
// directly write all the RGBA data to `font_surface` without it attempting to
// blend a surface that has pure black
sdl2.SetSurfaceBlendMode(temp_surface, .NONE);
src_rect := sdl2.Rect { src_rect := sdl2.Rect {
0, 0,
0, 0,
temp_surface.w, temp_surface.w,
temp_surface.h temp_surface.h
}; };
//fmt.println("char", char, src_rect.x, src_rect.y, src_rect.w, src_rect.h, atlas.max_width, atlas.max_height);
// FIXME: check if this failed // FIXME: check if this failed
sdl2.BlitSurface(temp_surface, &src_rect, font_surface, &rect); sdl2.BlitSurface(temp_surface, &src_rect, font_surface, &rect);
@ -90,8 +94,6 @@ gen_font_atlas :: proc(state: ^State, path: cstring) -> FontAtlas {
// FIXME: check if this failed // FIXME: check if this failed
atlas.texture = sdl2.CreateTextureFromSurface(state.sdl_renderer, font_surface); atlas.texture = sdl2.CreateTextureFromSurface(state.sdl_renderer, font_surface);
sdl2.SetTextureScaleMode(atlas.texture, .Best); sdl2.SetTextureScaleMode(atlas.texture, .Best);
// sdl2.SetTextureAlphaMod(atlas.texture, 0xff);
// sdl2.SetTextureBlendMode(atlas.texture, .BLEND);
return atlas; return atlas;
} }