Rework font rendering, configurable resolution

1 files changed, 2 insertions, 44 deletions

diff --git a/src/assets/shaders/bitmap/frag.glsl b/src/assets/shaders/bitmap/frag.glsl
index 94d27c9..470a7b8 100644
--- a/src/assets/shaders/bitmap/frag.glsl
+++ b/src/assets/shaders/bitmap/frag.glsl
@@ -2,55 +2,13 @@
 precision highp float;
 
 uniform sampler2D texture_data;
-uniform int text_length;
-uniform int text[256];
-uniform int char_width;
-uniform int char_height;
-uniform int font_width;
-uniform int font_height;
-uniform int text_width;
-uniform int text_height;
 uniform vec3 text_color;
 
 in vec2 vertex_texcoord;
 out vec4 frag_color;
 
-void main()
-{
-    vec2 inverted_texcoord = vec2(vertex_texcoord.x, 1.0 - vertex_texcoord.y);
-    vec2 texcoord_pixels = inverted_texcoord * vec2(float(text_width), float(text_height));
-    int texcoord_char_x = int(floor(texcoord_pixels.x)) / char_width;
-    int texcoord_char_y = int(floor(texcoord_pixels.y)) / char_height;
-
-    int x = 0;
-    int y = 0;
-    int i = 0;
-    for (; i < text_length; ++i) {
-        if (x == texcoord_char_x && y == texcoord_char_y) {
-            break;
-        }
-        if (text[i] == 10) {
-            x = 0;
-            y += 1;
-        } else {
-            x += 1;
-        }
-    }
-    if (i == text_length || text[i] == 10) discard;
-
-    int entry = text[i] - 32;
-    vec2 texcoord_base = vec2(
-        float(entry % (font_width / char_width)) * float(char_width),
-        float(entry / (font_width / char_width)) * float(char_height)
-    );
-    // vec2 texcoord_base = vec2(8.0, 0.0);
-    vec2 texcoord_off = vec2(
-        mod(texcoord_pixels.x, float(char_width)),
-        mod(texcoord_pixels.y, float(char_height))
-    );
-    vec2 texcoord_final = (texcoord_base + texcoord_off) / vec2(float(font_width), float(font_height));
-
-    vec4 texel = texture(texture_data, texcoord_final);
+void main() {
+    vec4 texel = texture(texture_data, vertex_texcoord);
     if (texel.rgb == vec3(0.0, 0.0, 0.0)) discard;
     texel.r = text_color.r;
     texel.g = text_color.g;