/* vid_render_gl.c GL version of the renderer Copyright (C) 2012 Bill Currie This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to: Free Software Foundation, Inc. 59 Temple Place - Suite 330 Boston, MA 02111-1307, USA */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include "QF/cvar.h" #include "QF/image.h" #include "QF/plugin/general.h" #include "QF/plugin/vid_render.h" #include "QF/GL/funcs.h" #include "QF/GL/qf_draw.h" #include "QF/GL/qf_fisheye.h" #include "QF/GL/qf_rmain.h" #include "QF/GL/qf_rsurf.h" #include "QF/GL/qf_particles.h" #include "QF/GL/qf_vid.h" #include "mod_internal.h" #include "r_cvar.h" #include "r_internal.h" #include "vid_internal.h" #include "vid_gl.h" gl_ctx_t *gl_ctx; /* Unknown renamed to GLErr_Unknown to solve conflict with winioctl.h */ static unsigned int GLErr_InvalidEnum; static unsigned int GLErr_InvalidValue; static unsigned int GLErr_InvalidOperation; static unsigned int GLErr_OutOfMemory; static unsigned int GLErr_StackOverflow; static unsigned int GLErr_StackUnderflow; static unsigned int GLErr_Unknown; static unsigned int R_TestErrors (unsigned int numerous) { switch (qfglGetError ()) { case GL_NO_ERROR: return numerous; break; case GL_INVALID_ENUM: GLErr_InvalidEnum++; R_TestErrors (numerous++); break; case GL_INVALID_VALUE: GLErr_InvalidValue++; R_TestErrors (numerous++); break; case GL_INVALID_OPERATION: GLErr_InvalidOperation++; R_TestErrors (numerous++); break; case GL_STACK_OVERFLOW: GLErr_StackOverflow++; R_TestErrors (numerous++); break; case GL_STACK_UNDERFLOW: GLErr_StackUnderflow++; R_TestErrors (numerous++); break; case GL_OUT_OF_MEMORY: GLErr_OutOfMemory++; R_TestErrors (numerous++); break; default: GLErr_Unknown++; R_TestErrors (numerous++); break; } return numerous; } static void R_DisplayErrors (void) { if (GLErr_InvalidEnum) printf ("%d OpenGL errors: Invalid Enum!\n", GLErr_InvalidEnum); if (GLErr_InvalidValue) printf ("%d OpenGL errors: Invalid Value!\n", GLErr_InvalidValue); if (GLErr_InvalidOperation) printf ("%d OpenGL errors: Invalid Operation!\n", GLErr_InvalidOperation); if (GLErr_StackOverflow) printf ("%d OpenGL errors: Stack Overflow!\n", GLErr_StackOverflow); if (GLErr_StackUnderflow) printf ("%d OpenGL errors: Stack Underflow\n!", GLErr_StackUnderflow); if (GLErr_OutOfMemory) printf ("%d OpenGL errors: Out Of Memory!\n", GLErr_OutOfMemory); if (GLErr_Unknown) printf ("%d Unknown OpenGL errors!\n", GLErr_Unknown); } static void R_ClearErrors (void) { GLErr_InvalidEnum = 0; GLErr_InvalidValue = 0; GLErr_InvalidOperation = 0; GLErr_OutOfMemory = 0; GLErr_StackOverflow = 0; GLErr_StackUnderflow = 0; GLErr_Unknown = 0; } void gl_errors (const char *msg) { if (R_TestErrors (0)) { printf ("gl_errors: %s\n", msg); R_DisplayErrors (); } R_ClearErrors (); } static void gl_vid_render_choose_visual (void *data) { gl_ctx->choose_visual (gl_ctx); } static void gl_vid_render_create_context (void *data) { gl_ctx->create_context (gl_ctx, 0); } static vid_model_funcs_t model_funcs = { .texture_render_size = sizeof (gltex_t), .Mod_LoadLighting = gl_Mod_LoadLighting, .Mod_SubdivideSurface = gl_Mod_SubdivideSurface, .Mod_ProcessTexture = gl_Mod_ProcessTexture, .Mod_LoadIQM = Mod_LoadIQM, .Mod_LoadAliasModel = Mod_LoadAliasModel, .Mod_LoadSpriteModel = Mod_LoadSpriteModel, .Mod_MakeAliasModelDisplayLists = gl_Mod_MakeAliasModelDisplayLists, .Mod_LoadAllSkins = gl_Mod_LoadAllSkins, .Mod_FinalizeAliasModel = gl_Mod_FinalizeAliasModel, .Mod_LoadExternalSkins = gl_Mod_LoadExternalSkins, .Mod_IQMFinish = gl_Mod_IQMFinish, .alias_cache = 1, .Mod_SpriteLoadFrames = gl_Mod_SpriteLoadFrames, .Skin_Free = Skin_Free, .Skin_SetColormap = Skin_SetColormap, .Skin_SetSkin = Skin_SetSkin, .Skin_SetupSkin = gl_Skin_SetupSkin, .Skin_SetTranslation = Skin_SetTranslation, .Skin_ProcessTranslation = gl_Skin_ProcessTranslation, .Skin_InitTranslations = gl_Skin_InitTranslations, }; static void gl_vid_render_init (void) { if (!vr_data.vid->vid_internal->sw_context) { Sys_Error ("Sorry, OpenGL not supported by this program."); } gl_ctx = vr_data.vid->vid_internal->gl_context (); gl_ctx->init_gl = GL_Init_Common; gl_ctx->load_gl (); vr_data.vid->vid_internal->data = gl_ctx; vr_data.vid->vid_internal->set_palette = GL_SetPalette; vr_data.vid->vid_internal->choose_visual = gl_vid_render_choose_visual; vr_data.vid->vid_internal->create_context = gl_vid_render_create_context; vr_funcs = &gl_vid_render_funcs; m_funcs = &model_funcs; } static void gl_vid_render_shutdown (void) { } static void gl_begin_frame (void) { if (gl_ctx->begun) { gl_ctx->end_rendering (); gl_ctx->begun = 0; } //FIXME forces the status bar to redraw. needed because it does not fully //update in sw modes but must in gl mode vr_data.scr_copyeverything = 1; if (gl_clear) { qfglClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); } else { qfglClear (GL_DEPTH_BUFFER_BIT); } gl_ctx->begun = 1; if (r_speeds) { gl_ctx->start_time = Sys_DoubleTime (); gl_ctx->brush_polys = 0; gl_ctx->alias_polys = 0; } GL_Set2D (); GL_DrawReset (); // draw any areas not covered by the refresh if (r_refdef.vrect.x > 0) { // left gl_Draw_TileClear (0, 0, r_refdef.vrect.x, vid.height - vr_data.lineadj); // right gl_Draw_TileClear (r_refdef.vrect.x + r_refdef.vrect.width, 0, vid.width - r_refdef.vrect.x + r_refdef.vrect.width, vid.height - vr_data.lineadj); } if (r_refdef.vrect.y > 0) { // top gl_Draw_TileClear (r_refdef.vrect.x, 0, r_refdef.vrect.x + r_refdef.vrect.width, r_refdef.vrect.y); // bottom gl_Draw_TileClear (r_refdef.vrect.x, r_refdef.vrect.y + r_refdef.vrect.height, r_refdef.vrect.width, vid.height - vr_data.lineadj - (r_refdef.vrect.height + r_refdef.vrect.y)); } gl_Fog_SetupFrame (); } static void gl_render_view (void) { // do 3D refresh drawing, and then update the screen qfglClear (GL_DEPTH_BUFFER_BIT); gl_R_RenderView (); gl_R_RenderEntities (r_ent_queue); } static void gl_draw_transparent (void) { gl_R_DrawWaterSurfaces (); } static void gl_post_process (framebuffer_t *src) { if (scr_fisheye) { gl_FisheyeScreen (src); } else if (r_dowarp) { gl_WarpScreen (src); } } static void gl_set_2d (int scaled) { if (scaled) { GL_Set2DScaled (); } else { GL_Set2D (); } } static void gl_end_frame (void) { if (r_speeds) { // qfglFinish (); double start_time = gl_ctx->start_time; double end_time = Sys_DoubleTime (); Sys_MaskPrintf (SYS_dev, "%3i ms %4i wpoly %4i epoly %4i parts\n", (int) ((end_time - start_time) * 1000), gl_ctx->brush_polys, gl_ctx->alias_polys, r_psystem.numparticles); } GL_FlushText (); qfglFlush (); if (gl_finish) { gl_ctx->end_rendering (); gl_ctx->begun = 0; } } static framebuffer_t * gl_create_cube_map (int side) { GLuint tex[2]; qfglGenTextures (2, tex); qfglBindTexture (GL_TEXTURE_CUBE_MAP_ARB, tex[0]); for (int i = 0; i < 6; i++) { qfglTexImage2D (GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB + i, 0, GL_RGBA, side, side, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0); } qfglTexParameteri (GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); qfglTexParameteri (GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); qfglTexParameteri (GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_MIN_FILTER, GL_LINEAR); qfglTexParameteri (GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_MAG_FILTER, GL_LINEAR); qfglBindTexture (GL_TEXTURE_2D, tex[1]); qfglTexImage2D (GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT, side, side, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_BYTE, 0); qfglTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); qfglTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); size_t size = sizeof (framebuffer_t) * 6; size += sizeof (gl_framebuffer_t) * 6; framebuffer_t *cube = malloc (size); __auto_type buffer_base = (gl_framebuffer_t *) &cube[6]; for (int i = 0; i < 6; i++) { cube[i].width = side; cube[i].height = side; __auto_type buffer = buffer_base + i; cube[i].buffer = buffer; buffer->color = tex[0]; buffer->depth = tex[1]; qfglGenFramebuffers (1, &buffer->handle); qfglBindFramebuffer (GL_FRAMEBUFFER, buffer->handle); qfglFramebufferTexture2D (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB + i, buffer->color, 0); qfglFramebufferTexture2D (GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, buffer->depth, 0); } qfglBindFramebuffer (GL_FRAMEBUFFER, 0); return cube; } static framebuffer_t * gl_create_frame_buffer (int width, int height) { size_t size = sizeof (framebuffer_t) + sizeof (gl_framebuffer_t); framebuffer_t *fb = malloc (size); fb->width = width; fb->height = height; __auto_type buffer = (gl_framebuffer_t *) &fb[1]; fb->buffer = buffer; qfglGenFramebuffers (1, &buffer->handle); GLuint tex[2]; qfglGenTextures (2, tex); buffer->color = tex[0]; buffer->depth = tex[1]; qfglBindTexture (GL_TEXTURE_2D, buffer->color); qfglTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0); qfglTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); qfglTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); qfglBindTexture (GL_TEXTURE_2D, buffer->depth); qfglTexImage2D (GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT, width, height, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_BYTE, 0); qfglTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); qfglTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); qfglBindFramebuffer (GL_FRAMEBUFFER, buffer->handle); qfglFramebufferTexture2D (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, buffer->color, 0); qfglFramebufferTexture2D (GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, buffer->depth, 0); qfglBindFramebuffer (GL_FRAMEBUFFER, 0); return fb; } static void gl_destroy_frame_buffer (framebuffer_t *framebuffer) { __auto_type fb = (gl_framebuffer_t *) framebuffer->buffer; qfglDeleteFramebuffers (1, &fb->handle); GLuint tex[2] = { fb->color, fb->depth }; qfglDeleteTextures (2, tex); free (framebuffer); } static void gl_bind_framebuffer (framebuffer_t *framebuffer) { unsigned width = vr_data.vid->width; unsigned height = vr_data.vid->height; if (!framebuffer) { qfglBindFramebuffer (GL_FRAMEBUFFER, 0); } else { gl_framebuffer_t *buffer = framebuffer->buffer; qfglBindFramebuffer (GL_FRAMEBUFFER, buffer->handle); width = framebuffer->width; height = framebuffer->height; } vrect_t r = { 0, 0, width, height }; R_SetVrect (&r, &r_refdef.vrect, 0); } static void gl_set_viewport (const vrect_t *view) { int x = view->x; int y = vid.height - (view->y + view->height); //FIXME vid.height int w = view->width; int h = view->height; qfglViewport (x, y, w, h); } static void gl_set_fov (float x, float y) { float neard, fard; mat4f_t proj; neard = r_nearclip; fard = r_farclip; // NOTE columns! proj[0] = (vec4f_t) { 1/x, 0, 0, 0 }; proj[1] = (vec4f_t) { 0, 1/y, 0, 0 }; proj[2] = (vec4f_t) { 0, 0, (fard) / (fard - neard), 1 }; proj[3] = (vec4f_t) { 0, 0, (fard * neard) / (neard - fard), 0 }; // convert 0..1 depth buffer range to -1..1 static mat4f_t depth_range = { { 1, 0, 0, 0}, { 0, 1, 0, 0}, { 0, 0, 2, 0}, { 0, 0,-1, 1}, }; mmulf (gl_ctx->projection, depth_range, proj); } static void gl_capture_screen (capfunc_t callback, void *data) { int count; tex_t *tex; count = vid.width * vid.height; tex = malloc (sizeof (tex_t) + count * 3); if (tex) { tex->data = (byte *) (tex + 1); tex->width = vid.width; tex->height = vid.height; tex->format = tex_rgb; tex->palette = 0; tex->flagbits = 0; tex->loaded = 1; tex->bgr = 1; tex->flipped = 1; qfglReadPixels (0, 0, tex->width, tex->height, GL_BGR_EXT, GL_UNSIGNED_BYTE, tex->data); } callback (tex, data); } vid_render_funcs_t gl_vid_render_funcs = { .init = gl_vid_render_init, .UpdateScreen = SCR_UpdateScreen_legacy, .Draw_CharBuffer = gl_Draw_CharBuffer, .Draw_SetScale = gl_Draw_SetScale, .Draw_Character = gl_Draw_Character, .Draw_String = gl_Draw_String, .Draw_nString = gl_Draw_nString, .Draw_AltString = gl_Draw_AltString, .Draw_ConsoleBackground = gl_Draw_ConsoleBackground, .Draw_Crosshair = gl_Draw_Crosshair, .Draw_CrosshairAt = gl_Draw_CrosshairAt, .Draw_TileClear = gl_Draw_TileClear, .Draw_Fill = gl_Draw_Fill, .Draw_Line = gl_Draw_Line, .Draw_TextBox = gl_Draw_TextBox, .Draw_FadeScreen = gl_Draw_FadeScreen, .Draw_BlendScreen = gl_Draw_BlendScreen, .Draw_CachePic = gl_Draw_CachePic, .Draw_UncachePic = gl_Draw_UncachePic, .Draw_MakePic = gl_Draw_MakePic, .Draw_DestroyPic = gl_Draw_DestroyPic, .Draw_PicFromWad = gl_Draw_PicFromWad, .Draw_Pic = gl_Draw_Pic, .Draw_FitPic = gl_Draw_FitPic, .Draw_Picf = gl_Draw_Picf, .Draw_SubPic = gl_Draw_SubPic, .Draw_AddFont = gl_Draw_AddFont, .Draw_Glyph = gl_Draw_Glyph, .ParticleSystem = gl_ParticleSystem, .R_Init = gl_R_Init, .R_ClearState = gl_R_ClearState, .R_LoadSkys = gl_R_LoadSkys, .R_NewScene = gl_R_NewScene, .R_LineGraph = gl_R_LineGraph, .begin_frame = gl_begin_frame, .render_view = gl_render_view, .draw_particles = gl_R_DrawParticles, .draw_transparent = gl_draw_transparent, .post_process = gl_post_process, .set_2d = gl_set_2d, .end_frame = gl_end_frame, .create_cube_map = gl_create_cube_map, .create_frame_buffer = gl_create_frame_buffer, .destroy_frame_buffer = gl_destroy_frame_buffer, .bind_framebuffer = gl_bind_framebuffer, .set_viewport = gl_set_viewport, .set_fov = gl_set_fov, .capture_screen = gl_capture_screen, .model_funcs = &model_funcs }; static general_funcs_t plugin_info_general_funcs = { .shutdown = gl_vid_render_shutdown, }; static general_data_t plugin_info_general_data; static plugin_funcs_t plugin_info_funcs = { .general = &plugin_info_general_funcs, .vid_render = &gl_vid_render_funcs, }; static plugin_data_t plugin_info_data = { .general = &plugin_info_general_data, .vid_render = &vid_render_data, }; static plugin_t plugin_info = { qfp_vid_render, 0, QFPLUGIN_VERSION, "0.1", "GL Renderer", "Copyright (C) 1996-1997 Id Software, Inc.\n" "Copyright (C) 1999-2012 contributors of the QuakeForge project\n" "Please see the file \"AUTHORS\" for a list of contributors", &plugin_info_funcs, &plugin_info_data, }; PLUGIN_INFO(vid_render, gl) { return &plugin_info; }