Function lf_image_render

leif.c:3278–3369

}

void lf_image_render(vec2s pos, LfColor color, LfTexture tex, LfColor border_color, float border_width, float corner_radius) {
  if(!state.renderer_render) return;
  if(item_should_cull((LfAABB){.pos = pos, .size = (vec2s){tex.width, tex.height}})) {
    return;
  }
  if(state.render.tex_count - 1 >= MAX_TEX_COUNT_BATCH - 1) {
    renderer_flush();
    renderer_begin();
  }
  // Offsetting the postion, so that pos is the top left of the rendered object
  vec2s pos_initial = pos;
  pos = (vec2s){pos.x + tex.width / 2.0f, pos.y + tex.height / 2.0f};

  if(state.image_color_stack.a != 0.0) {
    color = state.image_color_stack;
  }
  // Initializing texture coords data
  vec2s texcoords[4] = {
    (vec2s){0.0f, 0.0f},
    (vec2s){1.0f, 0.0f},
    (vec2s){1.0f, 1.0f},
    (vec2s){0.0f, 1.0f},
  };
  // Retrieving the texture index of the rendered texture
  float tex_index = -1.0f;
  for(uint32_t i = 0; i < state.render.tex_count; i++) {
    if(tex.id == state.render.textures[i].id)  {
      tex_index = i;
      break;
    }
  }
  if(tex_index == -1.0f) {
    tex_index = (float)state.render.tex_index;
    state.render.textures[state.render.tex_count++] = tex;
    state.render.tex_index++;
  }
  // Calculating the transform
  mat4 translate = GLM_MAT4_IDENTITY_INIT; 
  mat4 scale = GLM_MAT4_IDENTITY_INIT;
  mat4 transform = GLM_MAT4_IDENTITY_INIT;
  vec3s pos_xyz = (vec3s){pos.x, pos.y, 0.0f};
  vec3 tex_size;
  tex_size[0] = tex.width;
  tex_size[1] = tex.height;
  tex_size[2] = 0;
  glm_translate_make(translate, pos_xyz.raw);
  glm_scale_make(scale, tex_size);
  glm_mat4_mul(translate,scale,transform);

  // Adding the vertices to the batch renderer
  for(uint32_t i = 0; i < 4; i++) {
    if(state.render.vert_count >= MAX_RENDER_BATCH) {
      renderer_flush();
      renderer_begin();
    }
    vec4 result;
    glm_mat4_mulv(transform, state.render.vert_pos[i].raw, result);
    memcpy(state.render.verts[state.render.vert_count].pos, result, sizeof(vec2));