comparison: src/window.c
src/window.c
- changeset 6
- 302971e8599b
- parent 3
- 1efd6da2ad53
- child 7
- 9dd76cbd6c90
equal
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replaced
| 5:7e1196d551ff | 6:302971e8599b |
|---|---|
| 1 /* | |
| 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
| 3 * Copyright 2023 Mike Becker. All rights reserved. | |
| 4 * | |
| 5 * Redistribution and use in source and binary forms, with or without | |
| 6 * modification, are permitted provided that the following conditions are met: | |
| 7 * | |
| 8 * 1. Redistributions of source code must retain the above copyright | |
| 9 * notice, this list of conditions and the following disclaimer. | |
| 10 * | |
| 11 * 2. Redistributions in binary form must reproduce the above copyright | |
| 12 * notice, this list of conditions and the following disclaimer in the | |
| 13 * documentation and/or other materials provided with the distribution. | |
| 14 * | |
| 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
| 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | |
| 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| 25 * POSSIBILITY OF SUCH DAMAGE. | |
| 26 */ | |
| 27 | |
| 28 #include "ascension/window.h" | |
| 29 | |
| 30 #include <cx/linked_list.h> | |
| 31 #include <cx/printf.h> | |
| 32 | |
| 33 #include <GL/glew.h> | |
| 34 | |
| 35 static void asc_gl_debug_callback( | |
| 36 GLenum source, GLenum type, GLuint id, GLenum severity, | |
| 37 GLsizei length, const GLchar* message, | |
| 38 const void* userParam | |
| 39 ) { | |
| 40 cxmutstr buf = cx_asprintf( | |
| 41 "source = %d, id = %u, type = %d, severity= %d, message = %.*s", | |
| 42 source, id, type, severity, length, message); | |
| 43 if (type == GL_DEBUG_TYPE_ERROR) { | |
| 44 asc_error(buf.ptr); | |
| 45 } else { | |
| 46 asc_dprintf("GL debug: %*.s", (int)buf.length, buf.ptr); | |
| 47 } | |
| 48 cx_strfree(&buf); | |
| 49 } | |
| 50 | |
| 51 | |
| 52 static void asc_event_window_resized(Uint32 id, Sint32 width, Sint32 height) { | |
| 53 CxIterator iter = cxListIterator(asc_context.windows); | |
| 54 cx_foreach(AscWindow*, w, iter) { | |
| 55 if (w->id == id) { | |
| 56 w->dimensions.width = width; | |
| 57 w->dimensions.height = height; | |
| 58 return; | |
| 59 } | |
| 60 } | |
| 61 } | |
| 62 | |
| 63 bool asc_loop_next(void) { | |
| 64 // dispatch SDL events | |
| 65 SDL_Event event; | |
| 66 while (SDL_PollEvent(&event)) { | |
| 67 switch (event.type) { | |
| 68 case SDL_QUIT:return false; | |
| 69 case SDL_WINDOWEVENT: { | |
| 70 if (event.window.type == SDL_WINDOWEVENT_RESIZED) | |
| 71 asc_event_window_resized( | |
| 72 event.window.windowID, | |
| 73 event.window.data1, | |
| 74 event.window.data2 | |
| 75 ); | |
| 76 break; | |
| 77 } | |
| 78 case SDL_KEYDOWN: | |
| 79 // TODO: remove this code and implement key press map instead | |
| 80 if (event.key.keysym.sym == SDLK_ESCAPE) | |
| 81 return false; | |
| 82 break; | |
| 83 case SDL_KEYUP: | |
| 84 // TODO: implement key press map | |
| 85 break; | |
| 86 } | |
| 87 } | |
| 88 | |
| 89 // sync the windows | |
| 90 CxMutIterator windows = cxListMutIterator(asc_context.windows); | |
| 91 cx_foreach(AscWindow*, w, windows) { | |
| 92 asc_window_sync(w); | |
| 93 } | |
| 94 return true; | |
| 95 } | |
| 96 | |
| 97 void asc_window_settings_init_defaults(AscWindowSettings* settings) { | |
| 98 settings->depth_size = 24; | |
| 99 settings->vsync = 1; | |
| 100 settings->dimensions.width = 800; | |
| 101 settings->dimensions.height = 600; | |
| 102 settings->fullscreen = 0; | |
| 103 settings->gl_major_version = 3; | |
| 104 settings->gl_minor_version = 3; | |
| 105 settings->title = "Ascended Window"; | |
| 106 } | |
| 107 | |
| 108 void asc_window_initialize(AscWindow* window, AscWindowSettings const* settings) { | |
| 109 Uint32 flags = SDL_WINDOW_OPENGL | SDL_WINDOW_SHOWN; | |
| 110 flags |= settings->fullscreen ? SDL_WINDOW_FULLSCREEN_DESKTOP : SDL_WINDOW_RESIZABLE; | |
| 111 | |
| 112 window->window = SDL_CreateWindow( | |
| 113 settings->title, | |
| 114 SDL_WINDOWPOS_CENTERED, | |
| 115 SDL_WINDOWPOS_CENTERED, | |
| 116 settings->dimensions.width, | |
| 117 settings->dimensions.height, | |
| 118 flags | |
| 119 ); | |
| 120 if (window->window == NULL) { | |
| 121 asc_error(SDL_GetError()); | |
| 122 return; | |
| 123 } | |
| 124 | |
| 125 window->id = SDL_GetWindowID(window->window); | |
| 126 SDL_GetWindowSize(window->window, | |
| 127 &window->dimensions.width, | |
| 128 &window->dimensions.height | |
| 129 ); | |
| 130 | |
| 131 SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE); | |
| 132 SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, settings->gl_major_version); | |
| 133 SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, settings->gl_minor_version); | |
| 134 SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, settings->depth_size); | |
| 135 SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1); | |
| 136 window->glctx = SDL_GL_CreateContext(window->window); | |
| 137 if (window->glctx == NULL) { | |
| 138 asc_dprintf("Creating GL context failed for window %u", window->id); | |
| 139 } else { | |
| 140 glewExperimental = GL_TRUE; | |
| 141 GLenum err = glewInit(); | |
| 142 if (err == GLEW_OK) { | |
| 143 SDL_GL_SetSwapInterval(settings->vsync); | |
| 144 glEnable(GL_DEPTH_TEST); | |
| 145 glEnable(GL_BLEND); | |
| 146 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); | |
| 147 glEnable(GL_DEBUG_OUTPUT); | |
| 148 glDebugMessageCallback(asc_gl_debug_callback, NULL); | |
| 149 asc_dprintf("Window %u initialized", window->id); | |
| 150 cxListAdd(asc_context.windows, window); | |
| 151 return; | |
| 152 } else { | |
| 153 asc_error(glewGetErrorString(err)); | |
| 154 } | |
| 155 } | |
| 156 | |
| 157 // cleanup on error | |
| 158 if (window->glctx != NULL) { | |
| 159 SDL_GL_DeleteContext(window->glctx); | |
| 160 } | |
| 161 window->glctx = NULL; | |
| 162 SDL_DestroyWindow(window->window); | |
| 163 window->window = NULL; | |
| 164 window->id = 0; | |
| 165 } | |
| 166 | |
| 167 void asc_window_destroy_impl(AscWindow* window) { | |
| 168 // destory the GL context and the window | |
| 169 if (window->glctx != NULL) { | |
| 170 SDL_GL_DeleteContext(window->glctx); | |
| 171 } | |
| 172 if (window->window != NULL) { | |
| 173 SDL_DestroyWindow(window->window); | |
| 174 } | |
| 175 | |
| 176 // clean the data | |
| 177 asc_dprintf("Window %u and its OpenGL context destroyed.", window->id); | |
| 178 memset(window, 0, sizeof(AscWindow)); | |
| 179 } | |
| 180 | |
| 181 void asc_window_destroy(AscWindow* window) { | |
| 182 // find the window in the context and remove it | |
| 183 bool found = false; | |
| 184 CxMutIterator iter = cxListMutIterator(asc_context.windows); | |
| 185 cx_foreach(AscWindow*, w, iter) { | |
| 186 if (w == window) { | |
| 187 found = true; | |
| 188 cxIteratorFlagRemoval(iter); | |
| 189 } | |
| 190 } | |
| 191 if (!found) asc_window_destroy_impl(window); | |
| 192 } | |
| 193 | |
| 194 void asc_window_sync(AscWindow const* window) { | |
| 195 SDL_GL_MakeCurrent(window->window, window->glctx); | |
| 196 SDL_GL_SwapWindow(window->window); | |
| 197 glViewport(0, 0, window->dimensions.width, window->dimensions.height); | |
| 198 glClearColor(0.0f, 0.0f, 0.0f, 1.0f); | |
| 199 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); | |
| 200 } |
