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         //SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
  52         m_gl_context = SDL_GL_CreateContext(m_window);
  53         //SDL_GL_SetSwapInterval(1);
  54
  55         ogl_LoadFunctions();
  56
  57         // Why is this so horribly broken?
  58         if (ogl_IsVersionGEQ(3,2))
  59         {
  60                 Error("We require OpenGL 3.3, but you have version %d.%d!",ogl_GetMajorVersion(), ogl_GetMinorVersion());
  61         }
  62
  63         if (!SDL_GL_ExtensionSupported("GL_ARB_shading_language_420pack"))
  64         {
  65                 Error("Your system does not support the ARB_shading_language_420pack extension, which is required.");
  66         }
  67
  68         if (!SDL_GL_ExtensionSupported("GL_ARB_explicit_attrib_location"))
  69         {
  70                 Error("Your system does not support the ARB_explicit_attrib_location extension, which is required.");
  71         }
  72
  73         m_frame_begin_time = SDL_GetPerformanceCounter();
  74         m_last_frame_time = 0;
  75         m_last_frame_gpu_timer = 0;
  76
  77         glGenQueries(1, &m_frame_gpu_timer);
  78         glBeginQuery(GL_TIME_ELAPSED, m_frame_gpu_timer);
  79         #ifndef __MINGW32__
  80         glDebugMessageCallback(opengl_debug_callback, 0);
  81         #endif
  82
  83         GLuint default_vao;
  84         glGenVertexArrays(1, &default_vao);
  85         glBindVertexArray(default_vao);
  86
  87         m_texture_prog.InitialiseShaders(BASICTEX_VERT, BASICTEX_FRAG);
  88         m_texture_prog.Use();
  89
  90         // We always want to use the texture bound to texture unit 0.
  91         GLint texture_uniform_location = m_texture_prog.GetUniformLocation("tex");
  92         glUniform1i(texture_uniform_location, 0);
  93
  94         m_font_prog.InitialiseShaders(BASICTEX_VERT, "shaders/fonttex_frag.glsl");
  95         m_font_prog.Use();
  96
  97         // We always want to use the texture bound to texture unit 0.
  98         GLint font_texture_uniform_location = m_font_prog.GetUniformLocation("tex");
  99         glUniform1i(font_texture_uniform_location, 0);
 100         m_colour_uniform_location = m_font_prog.GetUniformLocation("colour");
 101
 102         m_viewport_ubo.SetUsage(GraphicsBuffer::BufferUsageDynamicDraw);
 103         m_viewport_ubo.SetType(GraphicsBuffer::BufferTypeUniform);
 104
 105         m_debug_font_atlas = 0;
 106         m_no_quit_requested = true;
 107         m_show_debug_font = true;
 108         m_view = NULL;
 109         ResizeViewport(800, 600);
 110
 111
 112
 113         Clear();
 114         Present();
 115
 116
 117 }
 118
 119 Screen::~Screen()
 120 {
 121         if (!Valid())
 122                 return;
 123         SDL_GL_DeleteContext(m_gl_context);
 124         SDL_DestroyWindow(m_window);
 125         SDL_Quit();
 126 }
 127
 128 void Screen::Clear(float r, float g, float b, float a)
 129 {
 130         if (!Valid())
 131                 return;
 132         glClearColor(r,g,b,a);
 133         glClear(GL_COLOR_BUFFER_BIT);
 134         DebugFontClear();
 135 }
 136
 137 void Screen::ResizeViewport(int width, int height)
 138 {
 139         glViewport(0, 0, width, height);
 140         m_viewport_width = width;
 141         m_viewport_height = height;
 142         GLfloat viewportfloats[] = {(float)width, (float)height};
 143         m_viewport_ubo.Upload(sizeof(float)*2, viewportfloats);
 144 }
 145
 146 bool Screen::PumpEvents()
 147 {
 148         if (!Valid())
 149                 return true;
 150
 151         SDL_Event evt;
 152
 153         while (SDL_PollEvent(&evt))
 154         {
 155                 switch (evt.type)
 156                 {
 157                 case SDL_QUIT:
 158                         m_no_quit_requested = false;
 159                         break;
 160                 case SDL_WINDOWEVENT:
 161                         switch (evt.window.event)
 162                         {
 163                         case SDL_WINDOWEVENT_RESIZED:
 164                         case SDL_WINDOWEVENT_SIZE_CHANGED:
 165                                 ResizeViewport(evt.window.data1, evt.window.data2);
 166                                 break;
 167                         }
 168                         break;
 169                 case SDL_MOUSEMOTION:
 170                         m_last_mouse_x = evt.motion.x;
 171                         m_last_mouse_y = evt.motion.y;
 172                         if (m_mouse_handler)
 173                         {
 174                                 m_mouse_handler(evt.motion.x, evt.motion.y,evt.motion.state, 0, this, m_view);
 175                         }
 176                         break;
 177                 case SDL_MOUSEBUTTONDOWN:
 178                 case SDL_MOUSEBUTTONUP:
 179                         m_last_mouse_x = evt.button.x;
 180                         m_last_mouse_y = evt.button.y;
 181                         if (m_mouse_handler)
 182                         {
 183                                 m_mouse_handler(evt.button.x, evt.button.y, evt.button.state?evt.button.button:0, 0, this, m_view);
 184                         }
 185                         break;
 186                 case SDL_MOUSEWHEEL:
 187                         if (m_mouse_handler)
 188                         {
 189                                 m_mouse_handler(m_last_mouse_x, m_last_mouse_y, 0, evt.wheel.y, this, m_view);
 190                         }
 191                         break;
 192                 case SDL_KEYDOWN:
 193                 {
 194                         Debug("Key %c down", (char)evt.key.keysym.sym);
 195                         if (isalnum((char)evt.key.keysym.sym))
 196                         {
 197                                 char filename[] = "0.bmp";
 198                                 filename[0] = (char)evt.key.keysym.sym;
 199                                 ScreenShot(filename);
 200                         }
 201                         break;
 202                 }
 203                 default:
 204                         break;
 205                 }
 206         }
 207         return m_no_quit_requested;
 208 }
 209
 210 void Screen::SetMouseCursor(Screen::MouseCursors cursor)
 211 {
 212         SDL_SystemCursor system_cursor_id = SDL_SYSTEM_CURSOR_ARROW;
 213         switch (cursor)
 214         {
 215         case CursorArrow: system_cursor_id = SDL_SYSTEM_CURSOR_ARROW; break;
 216         case CursorWait: system_cursor_id = SDL_SYSTEM_CURSOR_WAIT; break;
 217         case CursorWaitArrow: system_cursor_id = SDL_SYSTEM_CURSOR_WAITARROW; break;
 218         case CursorMove: system_cursor_id = SDL_SYSTEM_CURSOR_SIZEALL; break;
 219         case CursorHand: system_cursor_id = SDL_SYSTEM_CURSOR_HAND; break;
 220         default: break;
 221         }
 222         SDL_Cursor *system_cursor = SDL_CreateSystemCursor(system_cursor_id);
 223         SDL_SetCursor(system_cursor);
 224         //TODO: Check if we need to free the system cursors.
 225 }
 226
 227 void Screen::Present()
 228 {
 229         if (!Valid())
 230                 return;
 231
 232         if (m_debug_font_atlas)
 233                 DebugFontFlush();
 234
 235         m_last_frame_time = SDL_GetPerformanceCounter() - m_frame_begin_time;
 236         glEndQuery(GL_TIME_ELAPSED);
 237         SDL_GL_SwapWindow(m_window);
 238         m_frame_begin_time = SDL_GetPerformanceCounter();
 239         if (m_last_frame_gpu_timer)
 240                 glDeleteQueries(1, &m_last_frame_gpu_timer);
 241         m_last_frame_gpu_timer = m_frame_gpu_timer;
 242         glGenQueries(1, &m_frame_gpu_timer);
 243         glBeginQuery(GL_TIME_ELAPSED, m_frame_gpu_timer);
 244
 245
 246 }
 247
 248 double Screen::GetLastFrameTimeGPU() const
 249 {
 250         if (!Valid() || !m_last_frame_gpu_timer)
 251                 return 0;
 252         uint64_t frame_time_ns;
 253         glGetQueryObjectui64v(m_last_frame_gpu_timer, GL_QUERY_RESULT, &frame_time_ns);
 254         return frame_time_ns/1000000000.0;
 255 }
 256
 257 void Screen::RenderPixels(int x, int y, int w, int h, uint8_t *pixels) const
 258 {
 259         GLenum texture_format = GL_RGBA;
 260
 261         m_texture_prog.Use();
 262         GraphicsBuffer quad_vertex_buffer;
 263         quad_vertex_buffer.SetUsage(GraphicsBuffer::BufferUsageStaticDraw);
 264         quad_vertex_buffer.SetType(GraphicsBuffer::BufferTypeVertex);
 265         //rectangular texture == 2 triangles
 266         GLfloat quad[] = {
 267                 0, 0, (float)x, (float)y,
 268                 1, 0, (float)(x+w), (float)y,
 269                 0, 1, (float)x, (float)(y+h),
 270                 1, 1, (float)(x+w), (float)(y+h)
 271         };
 272         quad_vertex_buffer.Upload(sizeof(GLfloat) * 16, quad);
 273         quad_vertex_buffer.Bind();
 274         m_viewport_ubo.Bind();
 275
 276         glUniform4f(m_colour_uniform_location, 1.0f, 1.0f, 1.0f, 1.0f);
 277
 278         GLuint texID;
 279         glGenTextures(1, &texID);
 280         glBindTexture(GL_TEXTURE_2D, texID);
 281
 282         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 283         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 284         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
 285         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
 286
 287         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, texture_format, GL_UNSIGNED_BYTE, pixels);
 288
 289         glEnableVertexAttribArray(0);
 290         glEnableVertexAttribArray(1);
 291         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4*sizeof(float), (void*)(2*sizeof(float)));
 292         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4*sizeof(float), 0);
 293         glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
 294         glDisableVertexAttribArray(1);
 295         glDisableVertexAttribArray(0);
 296
 297 }
 298
 299 void Screen::ScreenShot(const char * filename) const
 300 {
 301         if (!Valid()) return;
 302         Debug("Attempting to save BMP to file %s", filename);
 303
 304         int w = ViewportWidth();
 305         int h = ViewportHeight();
 306         unsigned char * pixels = new unsigned char[w*h*4];
 307         if (pixels == NULL)
 308                 Fatal("Failed to allocate %d x %d x 4 = %d pixel array", w, h, w*h*4);
 309
 310         for (int y = 0; y < h; ++y)
 311         {
 312                 glReadPixels(0,h-y-1,w, 1, GL_RGBA, GL_UNSIGNED_BYTE, &pixels[y*w*4]);
 313         }
 314
 315 #if SDL_BYTEORDER == SDL_LIL_ENDIAN
 316         SDL_Surface * surf = SDL_CreateRGBSurfaceFrom(pixels, w, h, 8*4, w*4, 0x000000ff,0x0000ff00,0x00ff0000,0xff000000);
 317 #else
 318         SDL_Surface * surf = SDL_CreateRGBSurfaceFrom(pixels, w, h, 8*4, w*4, 0xff000000,0x00ff0000,0x0000ff00,0x000000ff);
 319 #endif
 320         if (surf == NULL)
 321                 Fatal("Failed to create SDL_Surface from pixel data - %s", SDL_GetError());
 322
 323         GLenum texture_format = (surf->format->Rmask == 0x000000FF) ? GL_RGBA : GL_BGRA;
 324         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);
 325
 326         if (SDL_SaveBMP(surf, filename) != 0)
 327                 Fatal("SDL_SaveBMP failed - %s", SDL_GetError());
 328
 329         SDL_FreeSurface(surf);
 330         delete [] pixels;
 331         Debug("Succeeded!");
 332 }
 333
 334 /**
 335  * Render a BMP
 336  * NOT PART OF THE DOCUMENT FORMAT
 337  */
 338 void Screen::RenderBMP(const char * filename) const
 339 {
 340         if (!Valid()) return;
 341         if (access(filename, R_OK) == -1)
 342         {
 343                 Error("No such file \"%s\" - Nothing to render - You might have done this deliberately?", filename);
 344                 return;
 345         }
 346         SDL_Surface * bmp = SDL_LoadBMP(filename);
 347         if (bmp == NULL)
 348                 Fatal("Failed to load BMP from %s - %s", filename, SDL_GetError());
 349
 350         int w = bmp->w;
 351         int h = bmp->h;
 352
 353         GLenum texture_format = GL_RGBA;
 354         switch (bmp->format->BytesPerPixel)
 355         {
 356                 case 4: //contains alpha
 357                         texture_format = (bmp->format->Rmask == 0x000000FF) ? GL_RGBA : GL_BGRA;
 358                         break;
 359                 case 3: //does not contain alpha
 360                         texture_format = (bmp->format->Rmask == 0x000000FF) ? GL_RGB : GL_BGR;
 361                         break;
 362                 default:
 363                         Fatal("Could not understand SDL_Surface format (%d colours)", bmp->format->BytesPerPixel);
 364                         break;
 365         }
 366
 367         //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);
 368
 369         m_texture_prog.Use();
 370         GraphicsBuffer quad_vertex_buffer;
 371         quad_vertex_buffer.SetUsage(GraphicsBuffer::BufferUsageStaticDraw);
 372         quad_vertex_buffer.SetType(GraphicsBuffer::BufferTypeVertex);
 373         GLfloat quad[] = {
 374                 0, 0, 0, 0,
 375                 1, 0, (float)ViewportWidth(), 0,
 376                 1, 1, (float)ViewportWidth(), (float)ViewportHeight(),
 377                 0, 1, 0, (float)ViewportHeight()
 378         };
 379         quad_vertex_buffer.Upload(sizeof(GLfloat) * 16, quad);
 380         quad_vertex_buffer.Bind();
 381         m_viewport_ubo.Bind();
 382
 383         glUniform4f(m_colour_uniform_location, 1.0f, 1.0f, 1.0f, 1.0f);
 384
 385         GLuint texID;
 386         glGenTextures(1, &texID);
 387         glBindTexture(GL_TEXTURE_2D, texID);
 388
 389         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 390         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 391         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
 392         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
 393
 394         glTexImage2D(GL_TEXTURE_2D, 0, bmp->format->BytesPerPixel, w, h, 0, texture_format, GL_UNSIGNED_BYTE, bmp->pixels);
 395
 396         glEnableVertexAttribArray(0);
 397         glEnableVertexAttribArray(1);
 398         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4*sizeof(float), (void*)(2*sizeof(float)));
 399         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4*sizeof(float), 0);
 400         glDisableVertexAttribArray(1);
 401         glDisableVertexAttribArray(0);
 402         glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
 403
 404         SDL_FreeSurface(bmp);
 405 }
 406
 407 void Screen::DebugFontInit(const char *name, float font_size)
 408 {
 409         if (!Valid()) return;
 410
 411         unsigned char font_atlas_data[1024*1024];
 412         FILE *font_file = fopen(name, "rb");
 413         fseek(font_file, 0, SEEK_END);
 414         size_t font_file_size = ftell(font_file);
 415         fseek(font_file, 0, SEEK_SET);
 416         unsigned char *font_file_data = (unsigned char*)malloc(font_file_size);
 417         SDL_assert(fread(font_file_data, 1, font_file_size, font_file) == font_file_size);
 418         fclose(font_file);
 419         stbtt_BakeFontBitmap(font_file_data,0, font_size, font_atlas_data,1024,1024, 32,96, m_debug_font_rects);
 420         free(font_file_data);
 421         glGenTextures(1, &m_debug_font_atlas);
 422         glBindTexture(GL_TEXTURE_2D, m_debug_font_atlas);
 423         glTexImage2D(GL_TEXTURE_2D, 0, GL_RED, 1024,1024, 0, GL_RED, GL_UNSIGNED_BYTE, font_atlas_data);
 424         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 425         m_debug_font_size = font_size;
 426
 427         m_debug_font_vertices.SetUsage(GraphicsBuffer::BufferUsageStreamDraw);
 428         m_debug_font_vertices.SetType(GraphicsBuffer::BufferTypeVertex);
 429         m_debug_font_vertices.SetName("m_debug_font_vertices");
 430         m_debug_font_vertices.Upload(8192,NULL);
 431         m_debug_font_vertex_head = 0;
 432
 433         m_debug_font_indices.SetUsage(GraphicsBuffer::BufferUsageStreamDraw);
 434         m_debug_font_indices.SetType(GraphicsBuffer::BufferTypeIndex);
 435         m_debug_font_indices.SetName("m_debug_font_indices");
 436         m_debug_font_indices.Resize(500);
 437         m_debug_font_index_head = 0;
 438 }
 439
 440 void Screen::DebugFontClear()
 441 {
 442         if (!Valid()) return;
 443         m_debug_font_x = m_debug_font_y = 0;
 444         if (!m_debug_font_atlas) return;
 445         DebugFontPrint("\n");
 446 }
 447
 448 void Screen::DebugFontFlush()
 449 {
 450         if (!Valid()) return;
 451         glPushDebugGroup(GL_DEBUG_SOURCE_APPLICATION, 40, -1, "Screen::DebugFontFlush()");
 452
 453         glEnable(GL_BLEND);
 454         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 455         glBindTexture(GL_TEXTURE_2D, m_debug_font_atlas);
 456
 457         m_font_prog.Use();
 458         m_viewport_ubo.Bind();
 459         m_debug_font_vertices.Bind();
 460         m_debug_font_indices.Bind();
 461         glUniform4f(m_colour_uniform_location, 0,0,0,1);
 462         glEnableVertexAttribArray(0);
 463         glEnableVertexAttribArray(1);
 464         glEnable(GL_PRIMITIVE_RESTART);
 465         glPrimitiveRestartIndex(65535);
 466         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4*sizeof(float), 0);
 467         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4*sizeof(float), (void*)(2*sizeof(float)));
 468         glDrawElements(GL_TRIANGLE_STRIP, m_debug_font_index_head, GL_UNSIGNED_SHORT, 0);
 469         glDisable(GL_PRIMITIVE_RESTART);
 470         glDisableVertexAttribArray(1);
 471         glDisableVertexAttribArray(0);
 472
 473         glDisable(GL_BLEND);
 474
 475         m_debug_font_vertices.Invalidate();
 476         m_debug_font_indices.Invalidate();
 477         m_debug_font_vertex_head = 0;
 478         m_debug_font_index_head = 0;
 479
 480         glPopDebugGroup();
 481 }
 482
 483 struct fontvertex
 484 {
 485         float x, y, s, t;
 486 };
 487
 488 void Screen::DebugFontPrint(const char* str)
 489 {
 490         if (!Valid()) return;
 491         if (!m_debug_font_atlas || !m_show_debug_font) return;
 492
 493         glPushDebugGroup(GL_DEBUG_SOURCE_APPLICATION, 41, -1, "Screen::DebugFontPrint()");
 494
 495         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));
 496         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));
 497
 498         size_t baseVertex = m_debug_font_vertex_head/4;
 499         while (*str) {
 500                 if (!vertexData.Free(4) || !indexData.Free(5))
 501                 {
 502                         m_debug_font_indices.UnMap();
 503                         m_debug_font_vertices.UnMap();
 504                         DebugFontFlush();
 505                         DebugFontPrint(str);
 506                         glPopDebugGroup();
 507                         return;
 508                 }
 509                 if (*str >= 32 && (unsigned char)(*str) < 128) {
 510                         stbtt_aligned_quad q;
 511                         stbtt_GetBakedQuad(m_debug_font_rects, 1024,1024, *str-32, &m_debug_font_x,&m_debug_font_y,&q,1);
 512                         size_t index = vertexData.Add({q.x0, q.y0, q.s0, q.t0});
 513                         index += baseVertex;
 514                         indexData.Add(index);
 515                         index = vertexData.Add({q.x1, q.y0, q.s1, q.t0});
 516                         index += baseVertex;
 517                         indexData.Add(index);
 518                         index = vertexData.Add({q.x0, q.y1, q.s0, q.t1});
 519                         index += baseVertex;
 520                         indexData.Add(index);
 521                         index = vertexData.Add({q.x1, q.y1, q.s1, q.t1});
 522                         index += baseVertex;
 523                         indexData.Add(index);
 524                         indexData.Add(65535);
 525
 526                         m_debug_font_vertex_head += 16;
 527                         m_debug_font_index_head += 5;
 528
 529                 }
 530                 else if (*str == '\n')
 531                 {
 532                         m_debug_font_x = 0;
 533                         m_debug_font_y += m_debug_font_size;
 534                 }
 535                 ++str;
 536         }
 537         m_debug_font_indices.UnMap();
 538         m_debug_font_vertices.UnMap();
 539         glPopDebugGroup();
 540         //DebugFontFlush();
 541 }
 542
 543 void Screen::DebugFontPrintF(const char *fmt, ...)
 544 {
 545         char buffer[BUFSIZ];
 546         va_list va;
 547         va_start(va, fmt);
 548         vsnprintf(buffer, BUFSIZ, fmt,va);
 549         va_end(va);
 550         DebugFontPrint(buffer);
 551 }