Super simple version of optimized text rendering done

1 files changed, 7 insertions, 3 deletions

diff --git a/source/shaders/ui_text_shader.fs.glsl b/source/shaders/ui_text_shader.fs.glsl
index d8bdcfb..bca9f7a 100644
--- a/source/shaders/ui_text_shader.fs.glsl
+++ b/source/shaders/ui_text_shader.fs.glsl
@@ -1,12 +1,16 @@
 #version 330 core
 
 in vec2 TexCoords;
-uniform sampler2D Texture;
+flat in int Index;
+uniform sampler2DArray TextureAtlas;
+uniform int TextureMap[32];
 uniform vec3 TextColor;
 out vec4 FragColor;
 
 void main() {
-  vec4 sampled = vec4(1.0, 1.0, 1.0, texture(Texture, TexCoords));
-  FragColor = sampled * vec4(TextColor, 1.0);
+  int TextureId = TextureMap[Index];
+  vec3 TextureIndexCoords = vec3(TexCoords.xy, TextureId);
+  vec4 sampled = vec4(1.0, 1.0, 1.0, texture(TextureAtlas, TextureIndexCoords).r);
+  FragColor = sampled * vec4(TextColor, 1);
 };