Added text alignment support.

src/dawnopengl/display/shader/ShaderParameterBufferTypes.hpp

@@ -43,5 +43,12 @@
 #define SHADER_PARAMETER_BUFFER_MAT4(name) \
   glm::mat4 name;
 
+// VEC2
+#define SHADER_PARAMETER_BUFFER_VEC2(name) \
+  glm::vec2 name;
+
+#define SHADER_PARAMETER_BUFFER_VEC2_ARRAY(name, size) \
+  glm::vec2 name[size];
+
 // EOF Fix
 #define NOTHING "Fixes an error with EOF"

src/dawnopengl/display/shader/shaders/FontShader.cpp

@@ -28,6 +28,7 @@ void FontShader::compile() {
       "layout (shared) uniform ub_Font {\n"
         "vec4 u_FontColors[" MACRO_STRINGIFY(FONT_SHADER_PARTS_MAX) "];\n"
         "int u_FontTextures[" MACRO_STRINGIFY(FONT_SHADER_PARTS_MAX) "];\n"
+        "vec2 u_FontLinePositions[" MACRO_STRINGIFY(FONT_SHADER_PARTS_MAX) "];\n"
         "int u_FontQuadMappings[" MACRO_STRINGIFY(FONT_SHADER_QUADS_MAX) "];\n"
       "};\n"
 
@@ -37,10 +38,12 @@ void FontShader::compile() {
       "flat out int o_TextIndex;\n"
 
       "void main() {\n"
-        "gl_Position = u_Projection * u_View * u_Model * vec4(aPos.xy, 0, 1.0);\n"
         "o_TextCoord = vec2(aTexCoord.x, aTexCoord.y);\n"
         "int quadIndex = gl_VertexID / " MACRO_STRINGIFY(QUAD_VERTICE_COUNT) ";\n"
         "int partIndex = u_FontQuadMappings[quadIndex];\n"
+        "gl_Position = u_Projection * u_View * u_Model * (\n"
+          "vec4(aPos.xy, 0, 1.0) + vec4(u_FontLinePositions[partIndex], 0, 0)\n"
+        ");\n"
         "o_VertColor = u_FontColors[partIndex];\n"
         "o_TextIndex = u_FontTextures[partIndex];\n"
       "}",

src/dawnopengl/display/shader/shaders/FontShader.hpp

@@ -15,6 +15,7 @@ namespace Dawn {
   SHADER_PARAMETER_BUFFER_DEFINE(FontShaderBuffer, \
     SHADER_PARAMETER_BUFFER_COLOR_ARRAY(colors, FONT_SHADER_PARTS_MAX);
     SHADER_PARAMETER_BUFFER_INTEGER_ARRAY(textures, FONT_SHADER_PARTS_MAX);
+    SHADER_PARAMETER_BUFFER_VEC2_ARRAY(linePositions, FONT_SHADER_PARTS_MAX);
     SHADER_PARAMETER_BUFFER_INTEGER_ARRAY(quadMappings, FONT_SHADER_QUADS_MAX);
   );