示例#1
0
void menu_display_push_quad(
      unsigned width, unsigned height,
      const float *colors, int x1, int y1,
      int x2, int y2)
{
   menu_display_ctx_coord_draw_t coord_draw;
   float vertex[8];
   video_coords_t coords;
   video_coord_array_t *ca   = NULL;

   ca = menu_display_get_coords_array();

   vertex[0]             = x1 / (float)width;
   vertex[1]             = y1 / (float)height;
   vertex[2]             = x2 / (float)width;
   vertex[3]             = y1 / (float)height;
   vertex[4]             = x1 / (float)width;
   vertex[5]             = y2 / (float)height;
   vertex[6]             = x2 / (float)width;
   vertex[7]             = y2 / (float)height;

   coord_draw.ptr        = NULL;

   menu_display_get_tex_coords(&coord_draw);

   coords.color          = colors;
   coords.vertex         = vertex;
   coords.tex_coord      = coord_draw.ptr;
   coords.lut_tex_coord  = coord_draw.ptr;
   coords.vertices       = 3;

   video_coord_array_append(ca, &coords, 3);

   coords.color         += 4;
   coords.vertex        += 2;
   coords.tex_coord     += 2;
   coords.lut_tex_coord += 2;

   video_coord_array_append(ca, &coords, 3);
}
示例#2
0
static void gl_raster_font_render_line(
      gl_raster_t *font, const char *msg, unsigned msg_len,
      GLfloat scale, const GLfloat color[4], GLfloat pos_x,
      GLfloat pos_y, unsigned text_align)
{
   int x, y, delta_x, delta_y;
   unsigned i;
   struct video_coords coords;
   float inv_tex_size_x, inv_tex_size_y, inv_win_width, inv_win_height;
   GLfloat font_tex_coords[2 * 6 * MAX_MSG_LEN_CHUNK];
   GLfloat font_vertex[2 * 6 * MAX_MSG_LEN_CHUNK];
   GLfloat font_color[4 * 6 * MAX_MSG_LEN_CHUNK];
   GLfloat font_lut_tex_coord[2 * 6 * MAX_MSG_LEN_CHUNK];
   gl_t      *gl       = font ? font->gl : NULL;
   const char* msg_end = msg + msg_len;

   if (!gl)
      return;

   x              = roundf(pos_x * gl->vp.width);
   y              = roundf(pos_y * gl->vp.height);
   delta_x        = 0;
   delta_y        = 0;

   switch (text_align)
   {
      case TEXT_ALIGN_RIGHT:
         x -= gl_get_message_width(font, msg, msg_len, scale);
         break;
      case TEXT_ALIGN_CENTER:
         x -= gl_get_message_width(font, msg, msg_len, scale) / 2.0;
         break;
   }

   inv_tex_size_x = 1.0f / font->tex_width;
   inv_tex_size_y = 1.0f / font->tex_height;
   inv_win_width  = 1.0f / font->gl->vp.width;
   inv_win_height = 1.0f / font->gl->vp.height;

   while (msg < msg_end)
   {
      i = 0;
      while ((i < MAX_MSG_LEN_CHUNK) && (msg < msg_end))
      {         
         int off_x, off_y, tex_x, tex_y, width, height;
         unsigned                  code = utf8_walk(&msg);
         const struct font_glyph *glyph = font->font_driver->get_glyph(
               font->font_data, code);

         if (!glyph) /* Do something smarter here ... */
            glyph = font->font_driver->get_glyph(font->font_data, '?');

         if (!glyph)
            continue;

         off_x  = glyph->draw_offset_x;
         off_y  = glyph->draw_offset_y;
         tex_x  = glyph->atlas_offset_x;
         tex_y  = glyph->atlas_offset_y;
         width  = glyph->width;
         height = glyph->height;

         gl_raster_font_emit(0, 0, 1); /* Bottom-left */
         gl_raster_font_emit(1, 1, 1); /* Bottom-right */
         gl_raster_font_emit(2, 0, 0); /* Top-left */

         gl_raster_font_emit(3, 1, 0); /* Top-right */
         gl_raster_font_emit(4, 0, 0); /* Top-left */
         gl_raster_font_emit(5, 1, 1); /* Bottom-right */

         i++;

         delta_x += glyph->advance_x;
         delta_y -= glyph->advance_y;
      }

      coords.tex_coord     = font_tex_coords;
      coords.vertex        = font_vertex;
      coords.color         = font_color;
      coords.vertices      = i * 6;
      coords.lut_tex_coord = font_lut_tex_coord;

      if (font->block)
         video_coord_array_append(&font->block->carr, &coords, coords.vertices);
      else
         gl_raster_font_draw_vertices(font, &coords);
   }
}