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(bool visible)
  28 {
  29
  30         SDL_Init(SDL_INIT_VIDEO);
  31         uint32_t flags = SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE;
  32         if (!visible)
  33                 flags |= SDL_WINDOW_HIDDEN;
  34
  35         m_window = SDL_CreateWindow("IPDF", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
  36                         800, 600, flags);
  37
  38         if (!m_window)
  39         {
  40                 Error("Couldn't create window!");
  41                 return;
  42         }
  43
  44         SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
  45         SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 1);
  46         SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, SDL_GL_CONTEXT_DEBUG_FLAG);
  47         SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
  48
  49         m_gl_context = SDL_GL_CreateContext(m_window);
  50
  51         ogl_LoadFunctions();
  52
  53         // Why is this so horribly broken?
  54         if (ogl_IsVersionGEQ(3,0))
  55         {
  56                 Error("We require OpenGL 3.1, but you have version %d.%d!",ogl_GetMajorVersion(), ogl_GetMinorVersion());
  57         }
  58
  59         if (!SDL_GL_ExtensionSupported("GL_ARB_shading_language_420pack"))
  60         {
  61                 Error("Your system does not support the ARB_shading_language_420pack extension, which is required.");
  62         }
  63
  64         if (!SDL_GL_ExtensionSupported("GL_ARB_explicit_attrib_location"))
  65         {
  66                 Error("Your system does not support the ARB_explicit_attrib_location extension, which is required.");
  67         }
  68
  69         m_frame_begin_time = SDL_GetPerformanceCounter();
  70         m_last_frame_time = 0;
  71         m_last_frame_gpu_timer = 0;
  72         glGenQueries(1, &m_frame_gpu_timer);
  73         glBeginQuery(GL_TIME_ELAPSED, m_frame_gpu_timer);
  74
  75         glDebugMessageCallback(opengl_debug_callback, 0);
  76
  77         GLuint default_vao;
  78         glGenVertexArrays(1, &default_vao);
  79         glBindVertexArray(default_vao);
  80
  81         m_texture_prog.InitialiseShaders(BASICTEX_VERT, BASICTEX_FRAG);
  82         m_texture_prog.Use();
  83
  84         // We always want to use the texture bound to texture unit 0.
  85         GLint texture_uniform_location = m_texture_prog.GetUniformLocation("tex");
  86         glUniform1i(texture_uniform_location, 0);
  87
  88         m_font_prog.InitialiseShaders(BASICTEX_VERT, "shaders/fonttex_frag.glsl");
  89         m_font_prog.Use();
  90
  91         // We always want to use the texture bound to texture unit 0.
  92         GLint font_texture_uniform_location = m_font_prog.GetUniformLocation("tex");
  93         glUniform1i(font_texture_uniform_location, 0);
  94         m_colour_uniform_location = m_font_prog.GetUniformLocation("colour");
  95
  96         m_viewport_ubo.SetUsage(GraphicsBuffer::BufferUsageDynamicDraw);
  97         m_viewport_ubo.SetType(GraphicsBuffer::BufferTypeUniform);
  98
  99         m_debug_font_atlas = 0;
 100         m_no_quit_requested = true;
 101         m_show_debug_font = true;
 102         m_view = NULL;
 103         ResizeViewport(800, 600);
 104
 105
 106
 107         Clear();
 108         Present();
 109
 110
 111 }
 112
 113 Screen::~Screen()
 114 {
 115         if (!Valid())
 116                 return;
 117         SDL_GL_DeleteContext(m_gl_context);
 118         SDL_DestroyWindow(m_window);
 119         SDL_Quit();
 120 }
 121
 122 void Screen::Clear(float r, float g, float b, float a)
 123 {
 124         if (!Valid())
 125                 return;
 126         glClearColor(r,g,b,a);
 127         glClear(GL_COLOR_BUFFER_BIT);
 128         DebugFontClear();
 129 }
 130
 131 void Screen::ResizeViewport(int width, int height)
 132 {
 133         glViewport(0, 0, width, height);
 134         m_viewport_width = width;
 135         m_viewport_height = height;
 136         GLfloat viewportfloats[] = {(float)width, (float)height};
 137         m_viewport_ubo.Upload(sizeof(float)*2, viewportfloats);
 138 }
 139
 140 bool Screen::PumpEvents()
 141 {
 142         if (!Valid())
 143                 return true;
 144
 145         SDL_Event evt;
 146
 147         while (SDL_PollEvent(&evt))
 148         {
 149                 switch (evt.type)
 150                 {
 151                 case SDL_QUIT:
 152                         m_no_quit_requested = false;
 153                         break;
 154                 case SDL_WINDOWEVENT:
 155                         switch (evt.window.event)
 156                         {
 157                         case SDL_WINDOWEVENT_RESIZED:
 158                         case SDL_WINDOWEVENT_SIZE_CHANGED:
 159                                 ResizeViewport(evt.window.data1, evt.window.data2);
 160                                 break;
 161                         }
 162                         break;
 163                 case SDL_MOUSEMOTION:
 164                         m_last_mouse_x = evt.motion.x;
 165                         m_last_mouse_y = evt.motion.y;
 166                         if (m_mouse_handler)
 167                         {
 168                                 m_mouse_handler(evt.motion.x, evt.motion.y,evt.motion.state, 0, this, m_view);
 169                         }
 170                         break;
 171                 case SDL_MOUSEBUTTONDOWN:
 172                 case SDL_MOUSEBUTTONUP:
 173                         m_last_mouse_x = evt.button.x;
 174                         m_last_mouse_y = evt.button.y;
 175                         if (m_mouse_handler)
 176                         {
 177                                 m_mouse_handler(evt.button.x, evt.button.y, evt.button.state?evt.button.button:0, 0, this, m_view);
 178                         }
 179                         break;
 180                 case SDL_MOUSEWHEEL:
 181                         if (m_mouse_handler)
 182                         {
 183                                 m_mouse_handler(m_last_mouse_x, m_last_mouse_y, 0, evt.wheel.y, this, m_view);
 184                         }
 185                         break;
 186                 case SDL_KEYDOWN:
 187                 {
 188                         Debug("Key %c down", (char)evt.key.keysym.sym);
 189                         if (isalnum((char)evt.key.keysym.sym))
 190                         {
 191                                 char filename[] = "0.bmp";
 192                                 filename[0] = (char)evt.key.keysym.sym;
 193                                 ScreenShot(filename);
 194                         }
 195                         break;
 196                 }
 197                 default:
 198                         break;
 199                 }
 200         }
 201         return m_no_quit_requested;
 202 }
 203
 204 void Screen::SetMouseCursor(Screen::MouseCursors cursor)
 205 {
 206         SDL_SystemCursor system_cursor_id = SDL_SYSTEM_CURSOR_ARROW;
 207         switch (cursor)
 208         {
 209         case CursorArrow: system_cursor_id = SDL_SYSTEM_CURSOR_ARROW; break;
 210         case CursorWait: system_cursor_id = SDL_SYSTEM_CURSOR_WAIT; break;
 211         case CursorWaitArrow: system_cursor_id = SDL_SYSTEM_CURSOR_WAITARROW; break;
 212         case CursorMove: system_cursor_id = SDL_SYSTEM_CURSOR_SIZEALL; break;
 213         case CursorHand: system_cursor_id = SDL_SYSTEM_CURSOR_HAND; break;
 214         default: break;
 215         }
 216         SDL_Cursor *system_cursor = SDL_CreateSystemCursor(system_cursor_id);
 217         SDL_SetCursor(system_cursor);
 218         //TODO: Check if we need to free the system cursors.
 219 }
 220
 221 void Screen::Present()
 222 {
 223         if (!Valid())
 224                 return;
 225         if (m_debug_font_atlas)
 226                 DebugFontFlush();
 227         m_last_frame_time = SDL_GetPerformanceCounter() - m_frame_begin_time;
 228         glEndQuery(GL_TIME_ELAPSED);
 229         SDL_GL_SwapWindow(m_window);
 230         m_frame_begin_time = SDL_GetPerformanceCounter();
 231         if (m_last_frame_gpu_timer)
 232                 glDeleteQueries(1, &m_last_frame_gpu_timer);
 233         m_last_frame_gpu_timer = m_frame_gpu_timer;
 234         glGenQueries(1, &m_frame_gpu_timer);
 235         glBeginQuery(GL_TIME_ELAPSED, m_frame_gpu_timer);
 236 }
 237
 238 double Screen::GetLastFrameTimeGPU() const
 239 {
 240         if (!Valid() || !m_last_frame_gpu_timer)
 241                 return 0;
 242         uint64_t frame_time_ns;
 243         glGetQueryObjectui64v(m_last_frame_gpu_timer, GL_QUERY_RESULT, &frame_time_ns);
 244         return frame_time_ns/1000000000.0;
 245 }
 246
 247 void Screen::RenderPixels(int x, int y, int w, int h, uint8_t *pixels) const
 248 {
 249         GLenum texture_format = GL_RGBA;
 250
 251         m_texture_prog.Use();
 252         GraphicsBuffer quad_vertex_buffer;
 253         quad_vertex_buffer.SetUsage(GraphicsBuffer::BufferUsageStaticDraw);
 254         quad_vertex_buffer.SetType(GraphicsBuffer::BufferTypeVertex);
 255         //rectangular texture == 2 triangles
 256         GLfloat quad[] = {
 257                 0, 0, (float)x, (float)y,
 258                 1, 0, (float)(x+w), (float)y,
 259                 0, 1, (float)x, (float)(y+h),
 260                 1, 1, (float)(x+w), (float)(y+h)
 261         };
 262         quad_vertex_buffer.Upload(sizeof(GLfloat) * 16, quad);
 263         quad_vertex_buffer.Bind();
 264         m_viewport_ubo.Bind();
 265
 266         glUniform4f(m_colour_uniform_location, 1.0f, 1.0f, 1.0f, 1.0f);
 267
 268         GLuint texID;
 269         glGenTextures(1, &texID);
 270         glBindTexture(GL_TEXTURE_2D, texID);
 271
 272         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 273         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 274         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
 275         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
 276
 277         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, texture_format, GL_UNSIGNED_BYTE, pixels);
 278
 279         glEnableVertexAttribArray(0);
 280         glEnableVertexAttribArray(1);
 281         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4*sizeof(float), (void*)(2*sizeof(float)));
 282         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4*sizeof(float), 0);
 283         glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
 284         glDisableVertexAttribArray(1);
 285         glDisableVertexAttribArray(0);
 286
 287 }
 288
 289 void Screen::ScreenShot(const char * filename) const
 290 {
 291         if (!Valid()) return;
 292         Debug("Attempting to save BMP to file %s", filename);
 293
 294         int w = ViewportWidth();
 295         int h = ViewportHeight();
 296         unsigned char * pixels = new unsigned char[w*h*4];
 297         if (pixels == NULL)
 298                 Fatal("Failed to allocate %d x %d x 4 = %d pixel array", w, h, w*h*4);
 299
 300         for (int y = 0; y < h; ++y)
 301         {
 302                 glReadPixels(0,h-y-1,w, 1, GL_RGBA, GL_UNSIGNED_BYTE, &pixels[y*w*4]);
 303         }
 304
 305 #if SDL_BYTEORDER == SDL_LIL_ENDIAN
 306         SDL_Surface * surf = SDL_CreateRGBSurfaceFrom(pixels, w, h, 8*4, w*4, 0x000000ff,0x0000ff00,0x00ff0000,0xff000000);
 307 #else
 308         SDL_Surface * surf = SDL_CreateRGBSurfaceFrom(pixels, w, h, 8*4, w*4, 0xff000000,0x00ff0000,0x0000ff00,0x000000ff);
 309 #endif
 310         if (surf == NULL)
 311                 Fatal("Failed to create SDL_Surface from pixel data - %s", SDL_GetError());
 312
 313         GLenum texture_format = (surf->format->Rmask == 0x000000FF) ? GL_RGBA : GL_BGRA;
 314         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);
 315
 316         if (SDL_SaveBMP(surf, filename) != 0)
 317                 Fatal("SDL_SaveBMP failed - %s", SDL_GetError());
 318
 319         SDL_FreeSurface(surf);
 320         delete [] pixels;
 321         Debug("Succeeded!");
 322 }
 323
 324 /**
 325  * Render a BMP
 326  * NOT PART OF THE DOCUMENT FORMAT
 327  */
 328 void Screen::RenderBMP(const char * filename) const
 329 {
 330         if (!Valid()) return;
 331         if (access(filename, R_OK) == -1)
 332         {
 333                 Error("No such file \"%s\" - Nothing to render - You might have done this deliberately?", filename);
 334                 return;
 335         }
 336         SDL_Surface * bmp = SDL_LoadBMP(filename);
 337         if (bmp == NULL)
 338                 Fatal("Failed to load BMP from %s - %s", filename, SDL_GetError());
 339
 340         int w = bmp->w;
 341         int h = bmp->h;
 342
 343         GLenum texture_format = GL_RGBA;
 344         switch (bmp->format->BytesPerPixel)
 345         {
 346                 case 4: //contains alpha
 347                         texture_format = (bmp->format->Rmask == 0x000000FF) ? GL_RGBA : GL_BGRA;
 348                         break;
 349                 case 3: //does not contain alpha
 350                         texture_format = (bmp->format->Rmask == 0x000000FF) ? GL_RGB : GL_BGR;
 351                         break;
 352                 default:
 353                         Fatal("Could not understand SDL_Surface format (%d colours)", bmp->format->BytesPerPixel);
 354                         break;
 355         }
 356
 357         //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);
 358
 359         m_texture_prog.Use();
 360         GraphicsBuffer quad_vertex_buffer;
 361         quad_vertex_buffer.SetUsage(GraphicsBuffer::BufferUsageStaticDraw);
 362         quad_vertex_buffer.SetType(GraphicsBuffer::BufferTypeVertex);
 363         GLfloat quad[] = {
 364                 0, 0, 0, 0,
 365                 1, 0, (float)ViewportWidth(), 0,
 366                 1, 1, (float)ViewportWidth(), (float)ViewportHeight(),
 367                 0, 1, 0, (float)ViewportHeight()
 368         };
 369         quad_vertex_buffer.Upload(sizeof(GLfloat) * 16, quad);
 370         quad_vertex_buffer.Bind();
 371         m_viewport_ubo.Bind();
 372
 373         glUniform4f(m_colour_uniform_location, 1.0f, 1.0f, 1.0f, 1.0f);
 374
 375         GLuint texID;
 376         glGenTextures(1, &texID);
 377         glBindTexture(GL_TEXTURE_2D, texID);
 378
 379         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 380         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 381         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
 382         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
 383
 384         glTexImage2D(GL_TEXTURE_2D, 0, bmp->format->BytesPerPixel, w, h, 0, texture_format, GL_UNSIGNED_BYTE, bmp->pixels);
 385
 386         glEnableVertexAttribArray(0);
 387         glEnableVertexAttribArray(1);
 388         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4*sizeof(float), (void*)(2*sizeof(float)));
 389         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4*sizeof(float), 0);
 390         glDisableVertexAttribArray(1);
 391         glDisableVertexAttribArray(0);
 392         glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
 393
 394         SDL_FreeSurface(bmp);
 395 }
 396
 397 void Screen::DebugFontInit(const char *name, float font_size)
 398 {
 399         if (!Valid()) return;
 400
 401         unsigned char font_atlas_data[1024*1024];
 402         FILE *font_file = fopen(name, "rb");
 403         fseek(font_file, 0, SEEK_END);
 404         size_t font_file_size = ftell(font_file);
 405         fseek(font_file, 0, SEEK_SET);
 406         unsigned char *font_file_data = (unsigned char*)malloc(font_file_size);
 407         SDL_assert(fread(font_file_data, 1, font_file_size, font_file) == font_file_size);
 408         fclose(font_file);
 409         stbtt_BakeFontBitmap(font_file_data,0, font_size, font_atlas_data,1024,1024, 32,96, m_debug_font_rects);
 410         free(font_file_data);
 411         glGenTextures(1, &m_debug_font_atlas);
 412         glBindTexture(GL_TEXTURE_2D, m_debug_font_atlas);
 413         glTexImage2D(GL_TEXTURE_2D, 0, GL_RED, 1024,1024, 0, GL_RED, GL_UNSIGNED_BYTE, font_atlas_data);
 414         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 415         m_debug_font_size = font_size;
 416
 417         m_debug_font_vertices.SetUsage(GraphicsBuffer::BufferUsageStreamDraw);
 418         m_debug_font_vertices.SetType(GraphicsBuffer::BufferTypeVertex);
 419         m_debug_font_vertices.SetName("m_debug_font_vertices");
 420         m_debug_font_vertices.Upload(8192,NULL);
 421         m_debug_font_vertex_head = 0;
 422
 423         m_debug_font_indices.SetUsage(GraphicsBuffer::BufferUsageStreamDraw);
 424         m_debug_font_indices.SetType(GraphicsBuffer::BufferTypeIndex);
 425         m_debug_font_indices.SetName("m_debug_font_indices");
 426         m_debug_font_indices.Resize(500);
 427         m_debug_font_index_head = 0;
 428 }
 429
 430 void Screen::DebugFontClear()
 431 {
 432         if (!Valid()) return;
 433         m_debug_font_x = m_debug_font_y = 0;
 434         if (!m_debug_font_atlas) return;
 435         DebugFontPrint("\n");
 436 }
 437
 438 void Screen::DebugFontFlush()
 439 {
 440         if (!Valid()) return;
 441         glPushDebugGroup(GL_DEBUG_SOURCE_APPLICATION, 40, -1, "Screen::DebugFontFlush()");
 442
 443         glEnable(GL_BLEND);
 444         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 445         glBindTexture(GL_TEXTURE_2D, m_debug_font_atlas);
 446
 447         m_font_prog.Use();
 448         m_viewport_ubo.Bind();
 449         m_debug_font_vertices.Bind();
 450         m_debug_font_indices.Bind();
 451         glUniform4f(m_colour_uniform_location, 0,0,0,1);
 452         glEnableVertexAttribArray(0);
 453         glEnableVertexAttribArray(1);
 454         glEnable(GL_PRIMITIVE_RESTART);
 455         glPrimitiveRestartIndex(65535);
 456         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4*sizeof(float), 0);
 457         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4*sizeof(float), (void*)(2*sizeof(float)));
 458         glDrawElements(GL_TRIANGLE_STRIP, m_debug_font_index_head, GL_UNSIGNED_SHORT, 0);
 459         glDisable(GL_PRIMITIVE_RESTART);
 460         glDisableVertexAttribArray(1);
 461         glDisableVertexAttribArray(0);
 462
 463         glDisable(GL_BLEND);
 464
 465         m_debug_font_vertices.Invalidate();
 466         m_debug_font_indices.Invalidate();
 467         m_debug_font_vertex_head = 0;
 468         m_debug_font_index_head = 0;
 469
 470         glPopDebugGroup();
 471 }
 472
 473 struct fontvertex
 474 {
 475         float x, y, s, t;
 476 };
 477
 478 void Screen::DebugFontPrint(const char* str)
 479 {
 480         if (!Valid()) return;
 481         if (!m_debug_font_atlas || !m_show_debug_font) return;
 482
 483         glPushDebugGroup(GL_DEBUG_SOURCE_APPLICATION, 41, -1, "Screen::DebugFontPrint()");
 484
 485         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));
 486         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));
 487
 488         size_t baseVertex = m_debug_font_vertex_head/4;
 489         while (*str) {
 490                 if (!vertexData.Free(4) || !indexData.Free(5))
 491                 {
 492                         m_debug_font_indices.UnMap();
 493                         m_debug_font_vertices.UnMap();
 494                         DebugFontFlush();
 495                         DebugFontPrint(str);
 496                         glPopDebugGroup();
 497                         return;
 498                 }
 499                 if (*str >= 32 && (unsigned char)(*str) < 128) {
 500                         stbtt_aligned_quad q;
 501                         stbtt_GetBakedQuad(m_debug_font_rects, 1024,1024, *str-32, &m_debug_font_x,&m_debug_font_y,&q,1);
 502                         size_t index = vertexData.Add({q.x0, q.y0, q.s0, q.t0});
 503                         index += baseVertex;
 504                         indexData.Add(index);
 505                         index = vertexData.Add({q.x1, q.y0, q.s1, q.t0});
 506                         index += baseVertex;
 507                         indexData.Add(index);
 508                         index = vertexData.Add({q.x0, q.y1, q.s0, q.t1});
 509                         index += baseVertex;
 510                         indexData.Add(index);
 511                         index = vertexData.Add({q.x1, q.y1, q.s1, q.t1});
 512                         index += baseVertex;
 513                         indexData.Add(index);
 514                         indexData.Add(65535);
 515
 516                         m_debug_font_vertex_head += 16;
 517                         m_debug_font_index_head += 5;
 518
 519                 }
 520                 else if (*str == '\n')
 521                 {
 522                         m_debug_font_x = 0;
 523                         m_debug_font_y += m_debug_font_size;
 524                 }
 525                 ++str;
 526         }
 527         m_debug_font_indices.UnMap();
 528         m_debug_font_vertices.UnMap();
 529         glPopDebugGroup();
 530         //DebugFontFlush();
 531 }
 532
 533 void Screen::DebugFontPrintF(const char *fmt, ...)
 534 {
 535         char buffer[BUFSIZ];
 536         va_list va;
 537         va_start(va, fmt);
 538         vsnprintf(buffer, BUFSIZ, fmt,va);
 539         va_end(va);
 540         DebugFontPrint(buffer);
 541 }