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
  12
  13 #define BASICTEX_VERT "shaders/basictex_vert.glsl"
  14 #define BASICTEX_FRAG "shaders/basictex_frag.glsl"
  15
  16 using namespace IPDF;
  17 using namespace std;
  18
  19 #ifndef __MINGW32__
  20 static void opengl_debug_callback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar* msg, const void *data)
  21 {
  22         // Don't print out gl Errors we generated.
  23         if (source == GL_DEBUG_SOURCE_APPLICATION) return;
  24         //Error("OpenGL Error (%d): %s", id, msg);
  25         // Spams this message on fglrx, disabling for now because it's damn annoying.
  26         // 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)
  27 }
  28 #endif
  29
  30 Screen::Screen(bool visible)
  31 {
  32
  33         SDL_Init(SDL_INIT_VIDEO);
  34         uint32_t flags = SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE;
  35         if (!visible)
  36                 flags |= SDL_WINDOW_HIDDEN;
  37
  38         m_window = SDL_CreateWindow("IPDF", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
  39                         800, 600, flags);
  40
  41         if (!m_window)
  42         {
  43                 Error("Couldn't create window!");
  44                 return;
  45         }
  46
  47         SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
  48         SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 3);
  49         SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, SDL_GL_CONTEXT_DEBUG_FLAG);
  50         SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
  51
  52         m_gl_context = SDL_GL_CreateContext(m_window);
  53
  54         ogl_LoadFunctions();
  55
  56         // Why is this so horribly broken?
  57         if (ogl_IsVersionGEQ(3,2))
  58         {
  59                 Error("We require OpenGL 3.3, but you have version %d.%d!",ogl_GetMajorVersion(), ogl_GetMinorVersion());
  60         }
  61
  62         if (!SDL_GL_ExtensionSupported("GL_ARB_shading_language_420pack"))
  63         {
  64                 Error("Your system does not support the ARB_shading_language_420pack extension, which is required.");
  65         }
  66
  67         if (!SDL_GL_ExtensionSupported("GL_ARB_explicit_attrib_location"))
  68         {
  69                 Error("Your system does not support the ARB_explicit_attrib_location extension, which is required.");
  70         }
  71
  72         m_frame_begin_time = SDL_GetPerformanceCounter();
  73         m_last_frame_time = 0;
  74         m_last_frame_gpu_timer = 0;
  75
  76         glGenQueries(1, &m_frame_gpu_timer);
  77         glBeginQuery(GL_TIME_ELAPSED, m_frame_gpu_timer);
  78         #ifndef __MINGW32__
  79         glDebugMessageCallback(opengl_debug_callback, 0);
  80         #endif
  81
  82         GLuint default_vao;
  83         glGenVertexArrays(1, &default_vao);
  84         glBindVertexArray(default_vao);
  85
  86         m_texture_prog.InitialiseShaders(BASICTEX_VERT, BASICTEX_FRAG);
  87         m_texture_prog.Use();
  88
  89         // We always want to use the texture bound to texture unit 0.
  90         GLint texture_uniform_location = m_texture_prog.GetUniformLocation("tex");
  91         glUniform1i(texture_uniform_location, 0);
  92
  93         m_font_prog.InitialiseShaders(BASICTEX_VERT, "shaders/fonttex_frag.glsl");
  94         m_font_prog.Use();
  95
  96         // We always want to use the texture bound to texture unit 0.
  97         GLint font_texture_uniform_location = m_font_prog.GetUniformLocation("tex");
  98         glUniform1i(font_texture_uniform_location, 0);
  99         m_colour_uniform_location = m_font_prog.GetUniformLocation("colour");
 100
 101         m_viewport_ubo.SetUsage(GraphicsBuffer::BufferUsageDynamicDraw);
 102         m_viewport_ubo.SetType(GraphicsBuffer::BufferTypeUniform);
 103
 104         m_debug_font_atlas = 0;
 105         m_no_quit_requested = true;
 106         m_show_debug_font = true;
 107         m_view = NULL;
 108         ResizeViewport(800, 600);
 109
 110
 111
 112         Clear();
 113         Present();
 114
 115
 116 }
 117
 118 Screen::~Screen()
 119 {
 120         if (!Valid())
 121                 return;
 122         SDL_GL_DeleteContext(m_gl_context);
 123         SDL_DestroyWindow(m_window);
 124         SDL_Quit();
 125 }
 126
 127 void Screen::Clear(float r, float g, float b, float a)
 128 {
 129         if (!Valid())
 130                 return;
 131         glClearColor(r,g,b,a);
 132         glClear(GL_COLOR_BUFFER_BIT);
 133         DebugFontClear();
 134 }
 135
 136 void Screen::ResizeViewport(int width, int height)
 137 {
 138         glViewport(0, 0, width, height);
 139         m_viewport_width = width;
 140         m_viewport_height = height;
 141         GLfloat viewportfloats[] = {(float)width, (float)height};
 142         m_viewport_ubo.Upload(sizeof(float)*2, viewportfloats);
 143 }
 144
 145 bool Screen::PumpEvents()
 146 {
 147         if (!Valid())
 148                 return true;
 149
 150         SDL_Event evt;
 151
 152         while (SDL_PollEvent(&evt))
 153         {
 154                 switch (evt.type)
 155                 {
 156                 case SDL_QUIT:
 157                         m_no_quit_requested = false;
 158                         break;
 159                 case SDL_WINDOWEVENT:
 160                         switch (evt.window.event)
 161                         {
 162                         case SDL_WINDOWEVENT_RESIZED:
 163                         case SDL_WINDOWEVENT_SIZE_CHANGED:
 164                                 ResizeViewport(evt.window.data1, evt.window.data2);
 165                                 break;
 166                         }
 167                         break;
 168                 case SDL_MOUSEMOTION:
 169                         m_last_mouse_x = evt.motion.x;
 170                         m_last_mouse_y = evt.motion.y;
 171                         if (m_mouse_handler)
 172                         {
 173                                 m_mouse_handler(evt.motion.x, evt.motion.y,evt.motion.state, 0, this, m_view);
 174                         }
 175                         break;
 176                 case SDL_MOUSEBUTTONDOWN:
 177                 case SDL_MOUSEBUTTONUP:
 178                         m_last_mouse_x = evt.button.x;
 179                         m_last_mouse_y = evt.button.y;
 180                         if (m_mouse_handler)
 181                         {
 182                                 m_mouse_handler(evt.button.x, evt.button.y, evt.button.state?evt.button.button:0, 0, this, m_view);
 183                         }
 184                         break;
 185                 case SDL_MOUSEWHEEL:
 186                         if (m_mouse_handler)
 187                         {
 188                                 m_mouse_handler(m_last_mouse_x, m_last_mouse_y, 0, evt.wheel.y, this, m_view);
 189                         }
 190                         break;
 191                 case SDL_KEYDOWN:
 192                 {
 193                         Debug("Key %c down", (char)evt.key.keysym.sym);
 194                         if (isalnum((char)evt.key.keysym.sym))
 195                         {
 196                                 char filename[] = "0.bmp";
 197                                 filename[0] = (char)evt.key.keysym.sym;
 198                                 ScreenShot(filename);
 199                         }
 200                         break;
 201                 }
 202                 default:
 203                         break;
 204                 }
 205         }
 206         return m_no_quit_requested;
 207 }
 208
 209 void Screen::SetMouseCursor(Screen::MouseCursors cursor)
 210 {
 211         SDL_SystemCursor system_cursor_id = SDL_SYSTEM_CURSOR_ARROW;
 212         switch (cursor)
 213         {
 214         case CursorArrow: system_cursor_id = SDL_SYSTEM_CURSOR_ARROW; break;
 215         case CursorWait: system_cursor_id = SDL_SYSTEM_CURSOR_WAIT; break;
 216         case CursorWaitArrow: system_cursor_id = SDL_SYSTEM_CURSOR_WAITARROW; break;
 217         case CursorMove: system_cursor_id = SDL_SYSTEM_CURSOR_SIZEALL; break;
 218         case CursorHand: system_cursor_id = SDL_SYSTEM_CURSOR_HAND; break;
 219         default: break;
 220         }
 221         SDL_Cursor *system_cursor = SDL_CreateSystemCursor(system_cursor_id);
 222         SDL_SetCursor(system_cursor);
 223         //TODO: Check if we need to free the system cursors.
 224 }
 225
 226 void Screen::Present()
 227 {
 228         if (!Valid())
 229                 return;
 230
 231         if (m_debug_font_atlas)
 232                 DebugFontFlush();
 233
 234         m_last_frame_time = SDL_GetPerformanceCounter() - m_frame_begin_time;
 235         glEndQuery(GL_TIME_ELAPSED);
 236         SDL_GL_SwapWindow(m_window);
 237         m_frame_begin_time = SDL_GetPerformanceCounter();
 238         if (m_last_frame_gpu_timer)
 239                 glDeleteQueries(1, &m_last_frame_gpu_timer);
 240         m_last_frame_gpu_timer = m_frame_gpu_timer;
 241         glGenQueries(1, &m_frame_gpu_timer);
 242         glBeginQuery(GL_TIME_ELAPSED, m_frame_gpu_timer);
 243
 244
 245 }
 246
 247 double Screen::GetLastFrameTimeGPU() const
 248 {
 249         if (!Valid() || !m_last_frame_gpu_timer)
 250                 return 0;
 251         uint64_t frame_time_ns;
 252         glGetQueryObjectui64v(m_last_frame_gpu_timer, GL_QUERY_RESULT, &frame_time_ns);
 253         return frame_time_ns/1000000000.0;
 254 }
 255
 256 void Screen::RenderPixels(int x, int y, int w, int h, uint8_t *pixels) const
 257 {
 258         GLenum texture_format = GL_RGBA;
 259
 260         m_texture_prog.Use();
 261         GraphicsBuffer quad_vertex_buffer;
 262         quad_vertex_buffer.SetUsage(GraphicsBuffer::BufferUsageStaticDraw);
 263         quad_vertex_buffer.SetType(GraphicsBuffer::BufferTypeVertex);
 264         //rectangular texture == 2 triangles
 265         GLfloat quad[] = {
 266                 0, 0, (float)x, (float)y,
 267                 1, 0, (float)(x+w), (float)y,
 268                 0, 1, (float)x, (float)(y+h),
 269                 1, 1, (float)(x+w), (float)(y+h)
 270         };
 271         quad_vertex_buffer.Upload(sizeof(GLfloat) * 16, quad);
 272         quad_vertex_buffer.Bind();
 273         m_viewport_ubo.Bind();
 274
 275         glUniform4f(m_colour_uniform_location, 1.0f, 1.0f, 1.0f, 1.0f);
 276
 277         GLuint texID;
 278         glGenTextures(1, &texID);
 279         glBindTexture(GL_TEXTURE_2D, texID);
 280
 281         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 282         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 283         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
 284         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
 285
 286         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, texture_format, GL_UNSIGNED_BYTE, pixels);
 287
 288         glEnableVertexAttribArray(0);
 289         glEnableVertexAttribArray(1);
 290         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4*sizeof(float), (void*)(2*sizeof(float)));
 291         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4*sizeof(float), 0);
 292         glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
 293         glDisableVertexAttribArray(1);
 294         glDisableVertexAttribArray(0);
 295
 296 }
 297
 298 void Screen::ScreenShot(const char * filename) const
 299 {
 300         if (!Valid()) return;
 301         Debug("Attempting to save BMP to file %s", filename);
 302
 303         int w = ViewportWidth();
 304         int h = ViewportHeight();
 305         unsigned char * pixels = new unsigned char[w*h*4];
 306         if (pixels == NULL)
 307                 Fatal("Failed to allocate %d x %d x 4 = %d pixel array", w, h, w*h*4);
 308
 309         for (int y = 0; y < h; ++y)
 310         {
 311                 glReadPixels(0,h-y-1,w, 1, GL_RGBA, GL_UNSIGNED_BYTE, &pixels[y*w*4]);
 312         }
 313
 314 #if SDL_BYTEORDER == SDL_LIL_ENDIAN
 315         SDL_Surface * surf = SDL_CreateRGBSurfaceFrom(pixels, w, h, 8*4, w*4, 0x000000ff,0x0000ff00,0x00ff0000,0xff000000);
 316 #else
 317         SDL_Surface * surf = SDL_CreateRGBSurfaceFrom(pixels, w, h, 8*4, w*4, 0xff000000,0x00ff0000,0x0000ff00,0x000000ff);
 318 #endif
 319         if (surf == NULL)
 320                 Fatal("Failed to create SDL_Surface from pixel data - %s", SDL_GetError());
 321
 322         GLenum texture_format = (surf->format->Rmask == 0x000000FF) ? GL_RGBA : GL_BGRA;
 323         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);
 324
 325         if (SDL_SaveBMP(surf, filename) != 0)
 326                 Fatal("SDL_SaveBMP failed - %s", SDL_GetError());
 327
 328         SDL_FreeSurface(surf);
 329         delete [] pixels;
 330         Debug("Succeeded!");
 331 }
 332
 333 /**
 334  * Render a BMP
 335  * NOT PART OF THE DOCUMENT FORMAT
 336  */
 337 void Screen::RenderBMP(const char * filename) const
 338 {
 339         if (!Valid()) return;
 340         if (access(filename, R_OK) == -1)
 341         {
 342                 Error("No such file \"%s\" - Nothing to render - You might have done this deliberately?", filename);
 343                 return;
 344         }
 345         SDL_Surface * bmp = SDL_LoadBMP(filename);
 346         if (bmp == NULL)
 347                 Fatal("Failed to load BMP from %s - %s", filename, SDL_GetError());
 348
 349         int w = bmp->w;
 350         int h = bmp->h;
 351
 352         GLenum texture_format = GL_RGBA;
 353         switch (bmp->format->BytesPerPixel)
 354         {
 355                 case 4: //contains alpha
 356                         texture_format = (bmp->format->Rmask == 0x000000FF) ? GL_RGBA : GL_BGRA;
 357                         break;
 358                 case 3: //does not contain alpha
 359                         texture_format = (bmp->format->Rmask == 0x000000FF) ? GL_RGB : GL_BGR;
 360                         break;
 361                 default:
 362                         Fatal("Could not understand SDL_Surface format (%d colours)", bmp->format->BytesPerPixel);
 363                         break;
 364         }
 365
 366         //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);
 367
 368         m_texture_prog.Use();
 369         GraphicsBuffer quad_vertex_buffer;
 370         quad_vertex_buffer.SetUsage(GraphicsBuffer::BufferUsageStaticDraw);
 371         quad_vertex_buffer.SetType(GraphicsBuffer::BufferTypeVertex);
 372         GLfloat quad[] = {
 373                 0, 0, 0, 0,
 374                 1, 0, (float)ViewportWidth(), 0,
 375                 1, 1, (float)ViewportWidth(), (float)ViewportHeight(),
 376                 0, 1, 0, (float)ViewportHeight()
 377         };
 378         quad_vertex_buffer.Upload(sizeof(GLfloat) * 16, quad);
 379         quad_vertex_buffer.Bind();
 380         m_viewport_ubo.Bind();
 381
 382         glUniform4f(m_colour_uniform_location, 1.0f, 1.0f, 1.0f, 1.0f);
 383
 384         GLuint texID;
 385         glGenTextures(1, &texID);
 386         glBindTexture(GL_TEXTURE_2D, texID);
 387
 388         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 389         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 390         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
 391         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
 392
 393         glTexImage2D(GL_TEXTURE_2D, 0, bmp->format->BytesPerPixel, w, h, 0, texture_format, GL_UNSIGNED_BYTE, bmp->pixels);
 394
 395         glEnableVertexAttribArray(0);
 396         glEnableVertexAttribArray(1);
 397         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4*sizeof(float), (void*)(2*sizeof(float)));
 398         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4*sizeof(float), 0);
 399         glDisableVertexAttribArray(1);
 400         glDisableVertexAttribArray(0);
 401         glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
 402
 403         SDL_FreeSurface(bmp);
 404 }
 405
 406 void Screen::DebugFontInit(const char *name, float font_size)
 407 {
 408         if (!Valid()) return;
 409
 410         unsigned char font_atlas_data[1024*1024];
 411         FILE *font_file = fopen(name, "rb");
 412         fseek(font_file, 0, SEEK_END);
 413         size_t font_file_size = ftell(font_file);
 414         fseek(font_file, 0, SEEK_SET);
 415         unsigned char *font_file_data = (unsigned char*)malloc(font_file_size);
 416         SDL_assert(fread(font_file_data, 1, font_file_size, font_file) == font_file_size);
 417         fclose(font_file);
 418         stbtt_BakeFontBitmap(font_file_data,0, font_size, font_atlas_data,1024,1024, 32,96, m_debug_font_rects);
 419         free(font_file_data);
 420         glGenTextures(1, &m_debug_font_atlas);
 421         glBindTexture(GL_TEXTURE_2D, m_debug_font_atlas);
 422         glTexImage2D(GL_TEXTURE_2D, 0, GL_RED, 1024,1024, 0, GL_RED, GL_UNSIGNED_BYTE, font_atlas_data);
 423         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 424         m_debug_font_size = font_size;
 425
 426         m_debug_font_vertices.SetUsage(GraphicsBuffer::BufferUsageStreamDraw);
 427         m_debug_font_vertices.SetType(GraphicsBuffer::BufferTypeVertex);
 428         m_debug_font_vertices.SetName("m_debug_font_vertices");
 429         m_debug_font_vertices.Upload(8192,NULL);
 430         m_debug_font_vertex_head = 0;
 431
 432         m_debug_font_indices.SetUsage(GraphicsBuffer::BufferUsageStreamDraw);
 433         m_debug_font_indices.SetType(GraphicsBuffer::BufferTypeIndex);
 434         m_debug_font_indices.SetName("m_debug_font_indices");
 435         m_debug_font_indices.Resize(500);
 436         m_debug_font_index_head = 0;
 437 }
 438
 439 void Screen::DebugFontClear()
 440 {
 441         if (!Valid()) return;
 442         m_debug_font_x = m_debug_font_y = 0;
 443         if (!m_debug_font_atlas) return;
 444         DebugFontPrint("\n");
 445 }
 446
 447 void Screen::DebugFontFlush()
 448 {
 449         if (!Valid()) return;
 450         glPushDebugGroup(GL_DEBUG_SOURCE_APPLICATION, 40, -1, "Screen::DebugFontFlush()");
 451
 452         glEnable(GL_BLEND);
 453         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 454         glBindTexture(GL_TEXTURE_2D, m_debug_font_atlas);
 455
 456         m_font_prog.Use();
 457         m_viewport_ubo.Bind();
 458         m_debug_font_vertices.Bind();
 459         m_debug_font_indices.Bind();
 460         glUniform4f(m_colour_uniform_location, 0,0,0,1);
 461         glEnableVertexAttribArray(0);
 462         glEnableVertexAttribArray(1);
 463         glEnable(GL_PRIMITIVE_RESTART);
 464         glPrimitiveRestartIndex(65535);
 465         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4*sizeof(float), 0);
 466         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4*sizeof(float), (void*)(2*sizeof(float)));
 467         glDrawElements(GL_TRIANGLE_STRIP, m_debug_font_index_head, GL_UNSIGNED_SHORT, 0);
 468         glDisable(GL_PRIMITIVE_RESTART);
 469         glDisableVertexAttribArray(1);
 470         glDisableVertexAttribArray(0);
 471
 472         glDisable(GL_BLEND);
 473
 474         m_debug_font_vertices.Invalidate();
 475         m_debug_font_indices.Invalidate();
 476         m_debug_font_vertex_head = 0;
 477         m_debug_font_index_head = 0;
 478
 479         glPopDebugGroup();
 480 }
 481
 482 struct fontvertex
 483 {
 484         float x, y, s, t;
 485 };
 486
 487 void Screen::DebugFontPrint(const char* str)
 488 {
 489         if (!Valid()) return;
 490         if (!m_debug_font_atlas || !m_show_debug_font) return;
 491
 492         glPushDebugGroup(GL_DEBUG_SOURCE_APPLICATION, 41, -1, "Screen::DebugFontPrint()");
 493
 494         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));
 495         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));
 496
 497         size_t baseVertex = m_debug_font_vertex_head/4;
 498         while (*str) {
 499                 if (!vertexData.Free(4) || !indexData.Free(5))
 500                 {
 501                         m_debug_font_indices.UnMap();
 502                         m_debug_font_vertices.UnMap();
 503                         DebugFontFlush();
 504                         DebugFontPrint(str);
 505                         glPopDebugGroup();
 506                         return;
 507                 }
 508                 if (*str >= 32 && (unsigned char)(*str) < 128) {
 509                         stbtt_aligned_quad q;
 510                         stbtt_GetBakedQuad(m_debug_font_rects, 1024,1024, *str-32, &m_debug_font_x,&m_debug_font_y,&q,1);
 511                         size_t index = vertexData.Add({q.x0, q.y0, q.s0, q.t0});
 512                         index += baseVertex;
 513                         indexData.Add(index);
 514                         index = vertexData.Add({q.x1, q.y0, q.s1, q.t0});
 515                         index += baseVertex;
 516                         indexData.Add(index);
 517                         index = vertexData.Add({q.x0, q.y1, q.s0, q.t1});
 518                         index += baseVertex;
 519                         indexData.Add(index);
 520                         index = vertexData.Add({q.x1, q.y1, q.s1, q.t1});
 521                         index += baseVertex;
 522                         indexData.Add(index);
 523                         indexData.Add(65535);
 524
 525                         m_debug_font_vertex_head += 16;
 526                         m_debug_font_index_head += 5;
 527
 528                 }
 529                 else if (*str == '\n')
 530                 {
 531                         m_debug_font_x = 0;
 532                         m_debug_font_y += m_debug_font_size;
 533                 }
 534                 ++str;
 535         }
 536         m_debug_font_indices.UnMap();
 537         m_debug_font_vertices.UnMap();
 538         glPopDebugGroup();
 539         //DebugFontFlush();
 540 }
 541
 542 void Screen::DebugFontPrintF(const char *fmt, ...)
 543 {
 544         char buffer[BUFSIZ];
 545         va_list va;
 546         va_start(va, fmt);
 547         vsnprintf(buffer, BUFSIZ, fmt,va);
 548         va_end(va);
 549         DebugFontPrint(buffer);
 550 }