| static const char *demo_vertex_glsl = |
| "/*\n" |
| " * Copyright 2026 Behdad Esfahbod. All Rights Reserved.\n" |
| " */\n" |
| "\n" |
| "uniform mat4 u_matViewProjection;\n" |
| "uniform vec2 u_viewport;\n" |
| "\n" |
| "in vec2 a_position;\n" |
| "in vec2 a_texcoord;\n" |
| "in vec2 a_normal;\n" |
| "in float a_emPerPos;\n" |
| "in uint a_glyphLoc;\n" |
| "\n" |
| "out vec2 v_texcoord;\n" |
| "flat out uint v_glyphLoc;\n" |
| "\n" |
| "void main ()\n" |
| "{\n" |
| " vec2 pos = a_position;\n" |
| " vec2 tex = a_texcoord;\n" |
| "\n" |
| " vec4 jac = vec4 (a_emPerPos, 0.0, 0.0, -a_emPerPos);\n" |
| "\n" |
| " hb_gpu_dilate (pos, tex, a_normal, jac,\n" |
| " u_matViewProjection, u_viewport);\n" |
| "\n" |
| " gl_Position = u_matViewProjection * vec4 (pos, 0.0, 1.0);\n" |
| " v_texcoord = tex;\n" |
| " v_glyphLoc = a_glyphLoc;\n" |
| "}\n" |
| ; |
