src/screen.cpp

   1 #include "common.h"
   2 #include "screen.h"
   3
   4 #include "gl_core44.h"
   5 #include <fcntl.h> // for access(2)
   6 #include <unistd.h> // for access(2)
   7
   8 #include "bufferbuilder.h"
   9 #include "shaderprogram.h"
  10
  11 #define BASICTEX_VERT "shaders/basictex_vert.glsl"
  12 #define BASICTEX_FRAG "shaders/basictex_frag.glsl"
  13
  14 using namespace IPDF;
  15 using namespace std;
  16
  17 static void opengl_debug_callback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar* msg, const void *data)
  18 {
  19         // Don't print out gl Errors we generated.
  20         if (source == GL_DEBUG_SOURCE_APPLICATION) return;
  21         //Error("OpenGL Error (%d): %s", id, msg);
  22         // Spams this message on fglrx, disabling for now because it's damn annoying.
  23         // ERROR: opengl_debug_callback (screen.cpp:21) - OpenGL Error (1011): glObjectLabel failed because (depending on the operation) a referenced binding point is empty; a referenced name is not the name of an object; or the given name is otherwise not valid to this operation (GL_INVALID_VALUE)
  24 }
  25
  26
  27 Screen::Screen()
  28 {
  29
  30         SDL_Init(SDL_INIT_VIDEO);
  31         m_window = SDL_CreateWindow("IPDF", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
  32                         800, 600, SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE);
  33
  34         if (!m_window)
  35         {
  36                 Fatal("Couldn't create window!");
  37         }
  38
  39         SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
  40         SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 1);
  41         SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, SDL_GL_CONTEXT_DEBUG_FLAG);
  42         SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
  43
  44         m_gl_context = SDL_GL_CreateContext(m_window);
  45
  46         ogl_LoadFunctions();
  47
  48         // Why is this so horribly broken?
  49         if (ogl_IsVersionGEQ(3,0))
  50         {
  51                 Fatal("We require OpenGL 3.1, but you have version %d.%d!",ogl_GetMajorVersion(), ogl_GetMinorVersion());
  52         }
  53
  54         if (!SDL_GL_ExtensionSupported("GL_ARB_shading_language_420pack"))
  55         {
  56                 Fatal("Your system does not support the ARB_shading_language_420pack extension, which is required.");
  57         }
  58
  59         if (!SDL_GL_ExtensionSupported("GL_ARB_explicit_attrib_location"))
  60         {
  61                 Fatal("Your system does not support the ARB_explicit_attrib_location extension, which is required.");
  62         }
  63
  64         m_frame_begin_time = SDL_GetPerformanceCounter();
  65         m_last_frame_time = 0;
  66         m_last_frame_gpu_timer = 0;
  67         glGenQueries(1, &m_frame_gpu_timer);
  68         glBeginQuery(GL_TIME_ELAPSED, m_frame_gpu_timer);
  69
  70         glDebugMessageCallback(opengl_debug_callback, 0);
  71
  72         GLuint default_vao;
  73         glGenVertexArrays(1, &default_vao);
  74         glBindVertexArray(default_vao);
  75
  76         m_texture_prog.InitialiseShaders(BASICTEX_VERT, BASICTEX_FRAG);
  77         m_texture_prog.Use();
  78
  79         // We always want to use the texture bound to texture unit 0.
  80         GLint texture_uniform_location = m_texture_prog.GetUniformLocation("tex");
  81         glUniform1i(texture_uniform_location, 0);
  82
  83         m_font_prog.InitialiseShaders(BASICTEX_VERT, "shaders/fonttex_frag.glsl");
  84         m_font_prog.Use();
  85
  86         // We always want to use the texture bound to texture unit 0.
  87         GLint font_texture_uniform_location = m_font_prog.GetUniformLocation("tex");
  88         glUniform1i(font_texture_uniform_location, 0);
  89         m_colour_uniform_location = m_font_prog.GetUniformLocation("colour");
  90
  91         m_viewport_ubo.SetUsage(GraphicsBuffer::BufferUsageDynamicDraw);
  92         m_viewport_ubo.SetType(GraphicsBuffer::BufferTypeUniform);
  93
  94         m_debug_font_atlas = 0;
  95         m_no_quit_requested = true;
  96         m_show_debug_font = true;
  97         m_view = NULL;
  98         ResizeViewport(800, 600);
  99
 100
 101
 102         Clear();
 103         Present();
 104
 105
 106 }
 107
 108 Screen::~Screen()
 109 {
 110         SDL_GL_DeleteContext(m_gl_context);
 111         SDL_DestroyWindow(m_window);
 112         SDL_Quit();
 113 }
 114
 115 void Screen::Clear(float r, float g, float b, float a)
 116 {
 117         glClearColor(r,g,b,a);
 118         glClear(GL_COLOR_BUFFER_BIT);
 119         DebugFontClear();
 120 }
 121
 122 void Screen::ResizeViewport(int width, int height)
 123 {
 124         glViewport(0, 0, width, height);
 125         m_viewport_width = width;
 126         m_viewport_height = height;
 127         GLfloat viewportfloats[] = {(float)width, (float)height};
 128         m_viewport_ubo.Upload(sizeof(float)*2, viewportfloats);
 129 }
 130
 131 bool Screen::PumpEvents()
 132 {
 133         SDL_Event evt;
 134
 135         while (SDL_PollEvent(&evt))
 136         {
 137                 switch (evt.type)
 138                 {
 139                 case SDL_QUIT:
 140                         m_no_quit_requested = false;
 141                         break;
 142                 case SDL_WINDOWEVENT:
 143                         switch (evt.window.event)
 144                         {
 145                         case SDL_WINDOWEVENT_RESIZED:
 146                         case SDL_WINDOWEVENT_SIZE_CHANGED:
 147                                 ResizeViewport(evt.window.data1, evt.window.data2);
 148                                 break;
 149                         }
 150                         break;
 151                 case SDL_MOUSEMOTION:
 152                         m_last_mouse_x = evt.motion.x;
 153                         m_last_mouse_y = evt.motion.y;
 154                         if (m_mouse_handler)
 155                         {
 156                                 m_mouse_handler(evt.motion.x, evt.motion.y,evt.motion.state, 0, this, m_view);
 157                         }
 158                         break;
 159                 case SDL_MOUSEBUTTONDOWN:
 160                 case SDL_MOUSEBUTTONUP:
 161                         m_last_mouse_x = evt.button.x;
 162                         m_last_mouse_y = evt.button.y;
 163                         if (m_mouse_handler)
 164                         {
 165                                 m_mouse_handler(evt.button.x, evt.button.y, evt.button.state?evt.button.button:0, 0, this, m_view);
 166                         }
 167                         break;
 168                 case SDL_MOUSEWHEEL:
 169                         if (m_mouse_handler)
 170                         {
 171                                 m_mouse_handler(m_last_mouse_x, m_last_mouse_y, 0, evt.wheel.y, this, m_view);
 172                         }
 173                         break;
 174                 case SDL_KEYDOWN:
 175                 {
 176                         Debug("Key %c down", (char)evt.key.keysym.sym);
 177                         if (isalnum((char)evt.key.keysym.sym))
 178                         {
 179                                 char filename[] = "0.bmp";
 180                                 filename[0] = (char)evt.key.keysym.sym;
 181                                 ScreenShot(filename);
 182                         }
 183                         break;
 184                 }
 185                 default:
 186                         break;
 187                 }
 188         }
 189         return m_no_quit_requested;
 190 }
 191
 192 void Screen::SetMouseCursor(Screen::MouseCursors cursor)
 193 {
 194         SDL_SystemCursor system_cursor_id = SDL_SYSTEM_CURSOR_ARROW;
 195         switch (cursor)
 196         {
 197         case CursorArrow: system_cursor_id = SDL_SYSTEM_CURSOR_ARROW; break;
 198         case CursorWait: system_cursor_id = SDL_SYSTEM_CURSOR_WAIT; break;
 199         case CursorWaitArrow: system_cursor_id = SDL_SYSTEM_CURSOR_WAITARROW; break;
 200         case CursorMove: system_cursor_id = SDL_SYSTEM_CURSOR_SIZEALL; break;
 201         case CursorHand: system_cursor_id = SDL_SYSTEM_CURSOR_HAND; break;
 202         default: break;
 203         }
 204         SDL_Cursor *system_cursor = SDL_CreateSystemCursor(system_cursor_id);
 205         SDL_SetCursor(system_cursor);
 206         //TODO: Check if we need to free the system cursors.
 207 }
 208
 209 void Screen::Present()
 210 {
 211         if (m_debug_font_atlas)
 212                 DebugFontFlush();
 213         m_last_frame_time = SDL_GetPerformanceCounter() - m_frame_begin_time;
 214         glEndQuery(GL_TIME_ELAPSED);
 215         SDL_GL_SwapWindow(m_window);
 216         m_frame_begin_time = SDL_GetPerformanceCounter();
 217         if (m_last_frame_gpu_timer)
 218                 glDeleteQueries(1, &m_last_frame_gpu_timer);
 219         m_last_frame_gpu_timer = m_frame_gpu_timer;
 220         glGenQueries(1, &m_frame_gpu_timer);
 221         glBeginQuery(GL_TIME_ELAPSED, m_frame_gpu_timer);
 222 }
 223
 224 double Screen::GetLastFrameTimeGPU() const
 225 {
 226         if (!m_last_frame_gpu_timer)
 227                 return 0;
 228         uint64_t frame_time_ns;
 229         glGetQueryObjectui64v(m_last_frame_gpu_timer, GL_QUERY_RESULT, &frame_time_ns);
 230         return frame_time_ns/1000000000.0;
 231 }
 232
 233 void Screen::RenderPixels(int x, int y, int w, int h, uint8_t *pixels) const
 234 {
 235         GLenum texture_format = GL_RGBA;
 236
 237         m_texture_prog.Use();
 238         GraphicsBuffer quad_vertex_buffer;
 239         quad_vertex_buffer.SetUsage(GraphicsBuffer::BufferUsageStaticDraw);
 240         quad_vertex_buffer.SetType(GraphicsBuffer::BufferTypeVertex);
 241         //rectangular texture == 2 triangles
 242         GLfloat quad[] = {
 243                 0, 0, (float)x, (float)y,
 244                 1, 0, (float)(x+w), (float)y,
 245                 0, 1, (float)x, (float)(y+h),
 246                 1, 1, (float)(x+w), (float)(y+h)
 247         };
 248         quad_vertex_buffer.Upload(sizeof(GLfloat) * 16, quad);
 249         quad_vertex_buffer.Bind();
 250         m_viewport_ubo.Bind();
 251
 252         glUniform4f(m_colour_uniform_location, 1.0f, 1.0f, 1.0f, 1.0f);
 253
 254         GLuint texID;
 255         glGenTextures(1, &texID);
 256         glBindTexture(GL_TEXTURE_2D, texID);
 257
 258         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 259         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 260         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
 261         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
 262
 263         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, texture_format, GL_UNSIGNED_BYTE, pixels);
 264
 265         glEnableVertexAttribArray(0);
 266         glEnableVertexAttribArray(1);
 267         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4*sizeof(float), (void*)(2*sizeof(float)));
 268         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4*sizeof(float), 0);
 269         glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
 270         glDisableVertexAttribArray(1);
 271         glDisableVertexAttribArray(0);
 272
 273 }
 274
 275 void Screen::ScreenShot(const char * filename) const
 276 {
 277         Debug("Attempting to save BMP to file %s", filename);
 278
 279         int w = ViewportWidth();
 280         int h = ViewportHeight();
 281         unsigned char * pixels = new unsigned char[w*h*4];
 282         if (pixels == NULL)
 283                 Fatal("Failed to allocate %d x %d x 4 = %d pixel array", w, h, w*h*4);
 284
 285         for (int y = 0; y < h; ++y)
 286         {
 287                 glReadPixels(0,h-y-1,w, 1, GL_RGBA, GL_UNSIGNED_BYTE, &pixels[y*w*4]);
 288         }
 289
 290 #if SDL_BYTEORDER == SDL_LIL_ENDIAN
 291         SDL_Surface * surf = SDL_CreateRGBSurfaceFrom(pixels, w, h, 8*4, w*4, 0x000000ff,0x0000ff00,0x00ff0000,0xff000000);
 292 #else
 293         SDL_Surface * surf = SDL_CreateRGBSurfaceFrom(pixels, w, h, 8*4, w*4, 0xff000000,0x00ff0000,0x0000ff00,0x000000ff);
 294 #endif
 295         if (surf == NULL)
 296                 Fatal("Failed to create SDL_Surface from pixel data - %s", SDL_GetError());
 297
 298         GLenum texture_format = (surf->format->Rmask == 0x000000FF) ? GL_RGBA : GL_BGRA;
 299         Debug("SDL_Surface %d BytesPerPixel, format %d (RGB = %d, BGR = %d, RGBA = %d, BGRA = %d)", surf->format->BytesPerPixel, texture_format, GL_RGB, GL_BGR, GL_RGBA, GL_BGRA);
 300
 301         if (SDL_SaveBMP(surf, filename) != 0)
 302                 Fatal("SDL_SaveBMP failed - %s", SDL_GetError());
 303
 304         SDL_FreeSurface(surf);
 305         delete [] pixels;
 306         Debug("Succeeded!");
 307 }
 308
 309 /**
 310  * Render a BMP
 311  * NOT PART OF THE DOCUMENT FORMAT
 312  */
 313 void Screen::RenderBMP(const char * filename) const
 314 {
 315         if (access(filename, R_OK) == -1)
 316         {
 317                 Error("No such file \"%s\" - Nothing to render - You might have done this deliberately?", filename);
 318                 return;
 319         }
 320         SDL_Surface * bmp = SDL_LoadBMP(filename);
 321         if (bmp == NULL)
 322                 Fatal("Failed to load BMP from %s - %s", filename, SDL_GetError());
 323
 324         int w = bmp->w;
 325         int h = bmp->h;
 326
 327         GLenum texture_format = GL_RGBA;
 328         switch (bmp->format->BytesPerPixel)
 329         {
 330                 case 4: //contains alpha
 331                         texture_format = (bmp->format->Rmask == 0x000000FF) ? GL_RGBA : GL_BGRA;
 332                         break;
 333                 case 3: //does not contain alpha
 334                         texture_format = (bmp->format->Rmask == 0x000000FF) ? GL_RGB : GL_BGR;
 335                         break;
 336                 default:
 337                         Fatal("Could not understand SDL_Surface format (%d colours)", bmp->format->BytesPerPixel);
 338                         break;
 339         }
 340
 341         //Debug("SDL_Surface %d BytesPerPixel, format %d (RGB = %d, BGR = %d, RGBA = %d, BGRA = %d)", bmp->format->BytesPerPixel, texture_format, GL_RGB, GL_BGR, GL_RGBA, GL_BGRA);
 342
 343         m_texture_prog.Use();
 344         GraphicsBuffer quad_vertex_buffer;
 345         quad_vertex_buffer.SetUsage(GraphicsBuffer::BufferUsageStaticDraw);
 346         quad_vertex_buffer.SetType(GraphicsBuffer::BufferTypeVertex);
 347         GLfloat quad[] = {
 348                 0, 0, 0, 0,
 349                 1, 0, (float)ViewportWidth(), 0,
 350                 1, 1, (float)ViewportWidth(), (float)ViewportHeight(),
 351                 0, 1, 0, (float)ViewportHeight()
 352         };
 353         quad_vertex_buffer.Upload(sizeof(GLfloat) * 16, quad);
 354         quad_vertex_buffer.Bind();
 355         m_viewport_ubo.Bind();
 356
 357         glUniform4f(m_colour_uniform_location, 1.0f, 1.0f, 1.0f, 1.0f);
 358
 359         GLuint texID;
 360         glGenTextures(1, &texID);
 361         glBindTexture(GL_TEXTURE_2D, texID);
 362
 363         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 364         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 365         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
 366         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
 367
 368         glTexImage2D(GL_TEXTURE_2D, 0, bmp->format->BytesPerPixel, w, h, 0, texture_format, GL_UNSIGNED_BYTE, bmp->pixels);
 369
 370         glEnableVertexAttribArray(0);
 371         glEnableVertexAttribArray(1);
 372         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4*sizeof(float), (void*)(2*sizeof(float)));
 373         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4*sizeof(float), 0);
 374         glDisableVertexAttribArray(1);
 375         glDisableVertexAttribArray(0);
 376         glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
 377
 378         SDL_FreeSurface(bmp);
 379 }
 380
 381 void Screen::DebugFontInit(const char *name, float font_size)
 382 {
 383         unsigned char font_atlas_data[1024*1024];
 384         FILE *font_file = fopen(name, "rb");
 385         fseek(font_file, 0, SEEK_END);
 386         size_t font_file_size = ftell(font_file);
 387         fseek(font_file, 0, SEEK_SET);
 388         unsigned char *font_file_data = (unsigned char*)malloc(font_file_size);
 389         SDL_assert(fread(font_file_data, 1, font_file_size, font_file) == font_file_size);
 390         fclose(font_file);
 391         stbtt_BakeFontBitmap(font_file_data,0, font_size, font_atlas_data,1024,1024, 32,96, m_debug_font_rects);
 392         free(font_file_data);
 393         glGenTextures(1, &m_debug_font_atlas);
 394         glBindTexture(GL_TEXTURE_2D, m_debug_font_atlas);
 395         glTexImage2D(GL_TEXTURE_2D, 0, GL_RED, 1024,1024, 0, GL_RED, GL_UNSIGNED_BYTE, font_atlas_data);
 396         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 397         m_debug_font_size = font_size;
 398
 399         m_debug_font_vertices.SetUsage(GraphicsBuffer::BufferUsageStreamDraw);
 400         m_debug_font_vertices.SetType(GraphicsBuffer::BufferTypeVertex);
 401         m_debug_font_vertices.SetName("m_debug_font_vertices");
 402         m_debug_font_vertices.Upload(8192,NULL);
 403         m_debug_font_vertex_head = 0;
 404
 405         m_debug_font_indices.SetUsage(GraphicsBuffer::BufferUsageStreamDraw);
 406         m_debug_font_indices.SetType(GraphicsBuffer::BufferTypeIndex);
 407         m_debug_font_indices.SetName("m_debug_font_indices");
 408         m_debug_font_indices.Resize(500);
 409         m_debug_font_index_head = 0;
 410 }
 411
 412 void Screen::DebugFontClear()
 413 {
 414         m_debug_font_x = m_debug_font_y = 0;
 415         if (!m_debug_font_atlas) return;
 416         DebugFontPrint("\n");
 417 }
 418
 419 void Screen::DebugFontFlush()
 420 {
 421         glPushDebugGroup(GL_DEBUG_SOURCE_APPLICATION, 40, -1, "Screen::DebugFontFlush()");
 422
 423         glEnable(GL_BLEND);
 424         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 425         glBindTexture(GL_TEXTURE_2D, m_debug_font_atlas);
 426
 427         m_font_prog.Use();
 428         m_viewport_ubo.Bind();
 429         m_debug_font_vertices.Bind();
 430         m_debug_font_indices.Bind();
 431         glUniform4f(m_colour_uniform_location, 0,0,0,1);
 432         glEnableVertexAttribArray(0);
 433         glEnableVertexAttribArray(1);
 434         glEnable(GL_PRIMITIVE_RESTART);
 435         glPrimitiveRestartIndex(65535);
 436         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4*sizeof(float), 0);
 437         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4*sizeof(float), (void*)(2*sizeof(float)));
 438         glDrawElements(GL_TRIANGLE_STRIP, m_debug_font_index_head, GL_UNSIGNED_SHORT, 0);
 439         glDisable(GL_PRIMITIVE_RESTART);
 440         glDisableVertexAttribArray(1);
 441         glDisableVertexAttribArray(0);
 442
 443         glDisable(GL_BLEND);
 444
 445         m_debug_font_vertices.Invalidate();
 446         m_debug_font_indices.Invalidate();
 447         m_debug_font_vertex_head = 0;
 448         m_debug_font_index_head = 0;
 449
 450         glPopDebugGroup();
 451 }
 452
 453 struct fontvertex
 454 {
 455         float x, y, s, t;
 456 };
 457
 458 void Screen::DebugFontPrint(const char* str)
 459 {
 460         if (!m_debug_font_atlas || !m_show_debug_font) return;
 461
 462         glPushDebugGroup(GL_DEBUG_SOURCE_APPLICATION, 41, -1, "Screen::DebugFontPrint()");
 463
 464         BufferBuilder<fontvertex> vertexData(m_debug_font_vertices.MapRange(m_debug_font_vertex_head*sizeof(float), m_debug_font_vertices.GetSize() - m_debug_font_vertex_head*sizeof(float), false, true, true), m_debug_font_vertices.GetSize() - m_debug_font_vertex_head*sizeof(float));
 465         BufferBuilder<uint16_t> indexData(m_debug_font_indices.MapRange(m_debug_font_index_head*sizeof(uint16_t), m_debug_font_indices.GetSize() - m_debug_font_index_head*sizeof(uint16_t), false, true, true), m_debug_font_indices.GetSize() - m_debug_font_index_head*sizeof(uint16_t));
 466
 467         size_t baseVertex = m_debug_font_vertex_head/4;
 468         while (*str) {
 469                 if (!vertexData.Free(4) || !indexData.Free(5))
 470                 {
 471                         m_debug_font_indices.UnMap();
 472                         m_debug_font_vertices.UnMap();
 473                         DebugFontFlush();
 474                         DebugFontPrint(str);
 475                         glPopDebugGroup();
 476                         return;
 477                 }
 478                 if (*str >= 32 && (unsigned char)(*str) < 128) {
 479                         stbtt_aligned_quad q;
 480                         stbtt_GetBakedQuad(m_debug_font_rects, 1024,1024, *str-32, &m_debug_font_x,&m_debug_font_y,&q,1);
 481                         size_t index = vertexData.Add({q.x0, q.y0, q.s0, q.t0});
 482                         index += baseVertex;
 483                         indexData.Add(index);
 484                         index = vertexData.Add({q.x1, q.y0, q.s1, q.t0});
 485                         index += baseVertex;
 486                         indexData.Add(index);
 487                         index = vertexData.Add({q.x0, q.y1, q.s0, q.t1});
 488                         index += baseVertex;
 489                         indexData.Add(index);
 490                         index = vertexData.Add({q.x1, q.y1, q.s1, q.t1});
 491                         index += baseVertex;
 492                         indexData.Add(index);
 493                         indexData.Add(65535);
 494
 495                         m_debug_font_vertex_head += 16;
 496                         m_debug_font_index_head += 5;
 497
 498                 }
 499                 else if (*str == '\n')
 500                 {
 501                         m_debug_font_x = 0;
 502                         m_debug_font_y += m_debug_font_size;
 503                 }
 504                 ++str;
 505         }
 506         m_debug_font_indices.UnMap();
 507         m_debug_font_vertices.UnMap();
 508         glPopDebugGroup();
 509         //DebugFontFlush();
 510 }
 511
 512 void Screen::DebugFontPrintF(const char *fmt, ...)
 513 {
 514         char buffer[BUFSIZ];
 515         va_list va;
 516         va_start(va, fmt);
 517         vsnprintf(buffer, BUFSIZ, fmt,va);
 518         va_end(va);
 519         DebugFontPrint(buffer);
 520 }