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