text_fs.c

static const char* text_fs = "#version 330 core\n"
"\n"
"in vec2 TexCoords;\n"
"out vec4 color;\n"
"\n"
"uniform sampler2D text;\n"
"uniform vec3      textColor;\n"
"\n"
"void main()\n"
"{   \n"
"  vec4 sampled = vec4(1.0, 1.0, 1.0, texture(text, TexCoords).r);\n"
"  color = vec4(textColor, 1.0) * sampled;\n"
"}\n"
;