mirror of https://github.com/vurtun/nuklear.git
Merge branch 'lumonix-glfw_opengl4_demo'
vurtun
commit
aa6752487f
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@ -0,0 +1,26 @@
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# Install
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BIN = demo
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# Flags
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CFLAGS += -std=c99 -pedantic -O2
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SRC = main.c
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OBJ = $(SRC:.c=.o)
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ifeq ($(OS),Windows_NT)
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BIN := $(BIN).exe
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LIBS = -lglfw3 -lopengl32 -lm -lGLU32 -lGLEW32
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else
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UNAME_S := $(shell uname -s)
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GLFW3 := $(shell pkg-config --libs glfw3)
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ifeq ($(UNAME_S),Darwin)
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LIBS := $(GLFW3) -framework OpenGL -framework Cocoa -framework IOKit -framework CoreVideo -lm -lGLEW -L/usr/local/lib
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else
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LIBS = $(GLFW3) -lGL -lm -lGLU -lGLEW
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endif
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endif
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$(BIN):
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@mkdir -p bin
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rm -f bin/$(BIN) $(OBJS)
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$(CC) $(SRC) $(CFLAGS) -o bin/$(BIN) $(LIBS)
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@ -0,0 +1,222 @@
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/* nuklear - 1.32.0 - public domain */
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <stdarg.h>
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#include <string.h>
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#include <math.h>
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#include <assert.h>
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#include <math.h>
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#include <limits.h>
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#include <time.h>
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#include <GL/glew.h>
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#include <GLFW/glfw3.h>
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#define NK_INCLUDE_FIXED_TYPES
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#define NK_INCLUDE_STANDARD_IO
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#define NK_INCLUDE_STANDARD_VARARGS
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#define NK_INCLUDE_DEFAULT_ALLOCATOR
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#define NK_INCLUDE_VERTEX_BUFFER_OUTPUT
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#define NK_INCLUDE_FONT_BAKING
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#define NK_INCLUDE_DEFAULT_FONT
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#define NK_IMPLEMENTATION
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#define NK_GLFW_GL4_IMPLEMENTATION
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#include "../../nuklear.h"
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#include "nuklear_glfw_gl4.h"
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#define WINDOW_WIDTH 1200
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#define WINDOW_HEIGHT 800
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#define MAX_VERTEX_BUFFER 512 * 1024
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#define MAX_ELEMENT_BUFFER 128 * 1024
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/* ===============================================================
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*
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* EXAMPLE
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*
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* ===============================================================*/
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/* This are some code examples to provide a small overview of what can be
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* done with this library. To try out an example uncomment the defines */
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/*#define INCLUDE_ALL */
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/*#define INCLUDE_STYLE */
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/*#define INCLUDE_CALCULATOR */
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/*#define INCLUDE_OVERVIEW */
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/*#define INCLUDE_NODE_EDITOR */
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#ifdef INCLUDE_ALL
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#define INCLUDE_STYLE
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#define INCLUDE_CALCULATOR
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#define INCLUDE_OVERVIEW
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#define INCLUDE_NODE_EDITOR
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#endif
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#ifdef INCLUDE_STYLE
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#include "../style.c"
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#endif
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#ifdef INCLUDE_CALCULATOR
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#include "../calculator.c"
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#endif
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#ifdef INCLUDE_OVERVIEW
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#include "../overview.c"
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#endif
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#ifdef INCLUDE_NODE_EDITOR
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#include "../node_editor.c"
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#endif
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/* ===============================================================
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*
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* DEMO
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*
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* ===============================================================*/
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static void error_callback(int e, const char *d)
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{printf("Error %d: %s\n", e, d);}
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int main(void)
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{
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/* Platform */
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static GLFWwindow *win;
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int width = 0, height = 0;
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struct nk_context *ctx;
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struct nk_colorf bg;
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struct nk_image img;
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/* GLFW */
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glfwSetErrorCallback(error_callback);
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if (!glfwInit()) {
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fprintf(stdout, "[GFLW] failed to init!\n");
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exit(1);
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}
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glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 4);
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glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 5);
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glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
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#ifdef __APPLE__
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glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
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#endif
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win = glfwCreateWindow(WINDOW_WIDTH, WINDOW_HEIGHT, "Demo", NULL, NULL);
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glfwMakeContextCurrent(win);
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glfwGetWindowSize(win, &width, &height);
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/* OpenGL */
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glViewport(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT);
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glewExperimental = 1;
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if (glewInit() != GLEW_OK) {
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fprintf(stderr, "Failed to setup GLEW\n");
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exit(1);
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}
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ctx = nk_glfw3_init(win, NK_GLFW3_INSTALL_CALLBACKS, MAX_VERTEX_BUFFER, MAX_ELEMENT_BUFFER);
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/* Load Fonts: if none of these are loaded a default font will be used */
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/* Load Cursor: if you uncomment cursor loading please hide the cursor */
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{struct nk_font_atlas *atlas;
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nk_glfw3_font_stash_begin(&atlas);
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/*struct nk_font *droid = nk_font_atlas_add_from_file(atlas, "../../../extra_font/DroidSans.ttf", 14, 0);*/
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/*struct nk_font *roboto = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Roboto-Regular.ttf", 14, 0);*/
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/*struct nk_font *future = nk_font_atlas_add_from_file(atlas, "../../../extra_font/kenvector_future_thin.ttf", 13, 0);*/
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/*struct nk_font *clean = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyClean.ttf", 12, 0);*/
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/*struct nk_font *tiny = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyTiny.ttf", 10, 0);*/
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/*struct nk_font *cousine = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Cousine-Regular.ttf", 13, 0);*/
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nk_glfw3_font_stash_end();
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/*nk_style_load_all_cursors(ctx, atlas->cursors);*/
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/*nk_style_set_font(ctx, &droid->handle);*/}
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#ifdef INCLUDE_STYLE
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/*set_style(ctx, THEME_WHITE);*/
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/*set_style(ctx, THEME_RED);*/
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/*set_style(ctx, THEME_BLUE);*/
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/*set_style(ctx, THEME_DARK);*/
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#endif
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/* Create bindless texture.
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* The index returned is not the opengl resource id.
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* IF you need the GL resource id use: nk_glfw3_get_tex_ogl_id() */
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{int tex_index = 0;
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enum {tex_width = 256, tex_height = 256};
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char pixels[tex_width * tex_height * 4];
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memset(pixels, 128, sizeof(pixels));
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tex_index = nk_glfw3_create_texture(pixels, tex_width, tex_height);
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img = nk_image_id(tex_index);}
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bg.r = 0.10f, bg.g = 0.18f, bg.b = 0.24f, bg.a = 1.0f;
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while (!glfwWindowShouldClose(win))
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{
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/* Input */
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glfwPollEvents();
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nk_glfw3_new_frame();
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/* GUI */
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if (nk_begin(ctx, "Demo", nk_rect(50, 50, 230, 250),
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NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE|
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NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE))
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{
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enum {EASY, HARD};
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static int op = EASY;
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static int property = 20;
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nk_layout_row_static(ctx, 30, 80, 1);
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if (nk_button_label(ctx, "button"))
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fprintf(stdout, "button pressed\n");
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nk_layout_row_dynamic(ctx, 30, 2);
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if (nk_option_label(ctx, "easy", op == EASY)) op = EASY;
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if (nk_option_label(ctx, "hard", op == HARD)) op = HARD;
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nk_layout_row_dynamic(ctx, 25, 1);
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nk_property_int(ctx, "Compression:", 0, &property, 100, 10, 1);
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nk_layout_row_dynamic(ctx, 20, 1);
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nk_label(ctx, "background:", NK_TEXT_LEFT);
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nk_layout_row_dynamic(ctx, 25, 1);
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if (nk_combo_begin_color(ctx, nk_rgb_cf(bg), nk_vec2(nk_widget_width(ctx),400))) {
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nk_layout_row_dynamic(ctx, 120, 1);
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bg = nk_color_picker(ctx, bg, NK_RGBA);
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nk_layout_row_dynamic(ctx, 25, 1);
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bg.r = nk_propertyf(ctx, "#R:", 0, bg.r, 1.0f, 0.01f,0.005f);
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bg.g = nk_propertyf(ctx, "#G:", 0, bg.g, 1.0f, 0.01f,0.005f);
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bg.b = nk_propertyf(ctx, "#B:", 0, bg.b, 1.0f, 0.01f,0.005f);
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bg.a = nk_propertyf(ctx, "#A:", 0, bg.a, 1.0f, 0.01f,0.005f);
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nk_combo_end(ctx);
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}
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}
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nk_end(ctx);
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/* Bindless Texture */
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if (nk_begin(ctx, "Texture", nk_rect(250, 150, 230, 250),
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NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE|
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NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE))
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{
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struct nk_command_buffer *canvas = nk_window_get_canvas(ctx);
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struct nk_rect total_space = nk_window_get_content_region(ctx);
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nk_draw_image(canvas, total_space, &img, nk_white);
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}
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nk_end(ctx);
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/* -------------- EXAMPLES ---------------- */
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#ifdef INCLUDE_CALCULATOR
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calculator(ctx);
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#endif
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#ifdef INCLUDE_OVERVIEW
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overview(ctx);
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#endif
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#ifdef INCLUDE_NODE_EDITOR
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node_editor(ctx);
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#endif
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/* ----------------------------------------- */
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/* Draw */
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glfwGetWindowSize(win, &width, &height);
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glViewport(0, 0, width, height);
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glClear(GL_COLOR_BUFFER_BIT);
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glClearColor(bg.r, bg.g, bg.b, bg.a);
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/* IMPORTANT: `nk_glfw_render` modifies some global OpenGL state
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* with blending, scissor, face culling, depth test and viewport and
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* defaults everything back into a default state.
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* Make sure to either a.) save and restore or b.) reset your own state after
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* rendering the UI. */
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nk_glfw3_render(NK_ANTI_ALIASING_ON);
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glfwSwapBuffers(win);
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}
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nk_glfw3_shutdown();
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glfwTerminate();
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return 0;
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}
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|
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@ -0,0 +1,647 @@
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/*
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* Nuklear - 1.32.0 - public domain
|
||||
* no warrenty implied; use at your own risk.
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* authored from 2015-2016 by Micha Mettke
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*/
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||||
/*
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||||
* ==============================================================
|
||||
*
|
||||
* API
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||||
*
|
||||
* ===============================================================
|
||||
*/
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||||
#ifndef NK_GLFW_GL4_H_
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#define NK_GLFW_GL4_H_
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||||
|
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#include <string.h>
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#include <GLFW/glfw3.h>
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|
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enum nk_glfw_init_state{
|
||||
NK_GLFW3_DEFAULT = 0,
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NK_GLFW3_INSTALL_CALLBACKS
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||||
};
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||||
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NK_API struct nk_context* nk_glfw3_init(GLFWwindow *win, enum nk_glfw_init_state, int max_vertex_buffer, int max_element_buffer);
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NK_API void nk_glfw3_shutdown(void);
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NK_API void nk_glfw3_font_stash_begin(struct nk_font_atlas **atlas);
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NK_API void nk_glfw3_font_stash_end(void);
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NK_API void nk_glfw3_new_frame(void);
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NK_API void nk_glfw3_render(enum nk_anti_aliasing);
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NK_API void nk_glfw3_device_destroy(void);
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NK_API void nk_glfw3_device_create(void);
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||||
|
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NK_API void nk_glfw3_char_callback(GLFWwindow *win, unsigned int codepoint);
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NK_API void nk_gflw3_scroll_callback(GLFWwindow *win, double xoff, double yoff);
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NK_API void nk_glfw3_mouse_button_callback(GLFWwindow *win, int button, int action, int mods);
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|
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NK_API GLuint nk_glfw3_get_tex_ogl_id(int tex_index);
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NK_API GLuint64 nk_glfw3_get_tex_ogl_handle(int tex_index);
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NK_API int nk_glfw3_create_texture(const void* image, int width, int height);
|
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NK_API void nk_glfw3_destroy_texture(int tex_index);
|
||||
|
||||
#endif
|
||||
/*
|
||||
* ==============================================================
|
||||
*
|
||||
* IMPLEMENTATION
|
||||
*
|
||||
* ===============================================================
|
||||
*/
|
||||
#ifdef NK_GLFW_GL4_IMPLEMENTATION
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||||
#undef NK_GLFW_GL4_IMPLEMENTATION
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||||
|
||||
#ifndef NK_GLFW_TEXT_MAX
|
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#define NK_GLFW_TEXT_MAX 256
|
||||
#endif
|
||||
#ifndef NK_GLFW_DOUBLE_CLICK_LO
|
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#define NK_GLFW_DOUBLE_CLICK_LO 0.02
|
||||
#endif
|
||||
#ifndef NK_GLFW_DOUBLE_CLICK_HI
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#define NK_GLFW_DOUBLE_CLICK_HI 0.2
|
||||
#endif
|
||||
#ifndef NK_GLFW_MAX_TEXTURES
|
||||
#define NK_GLFW_MAX_TEXTURES 256
|
||||
#endif
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||||
|
||||
struct nk_glfw_vertex {
|
||||
float position[2];
|
||||
float uv[2];
|
||||
nk_byte col[4];
|
||||
};
|
||||
|
||||
struct nk_glfw_device {
|
||||
struct nk_buffer cmds;
|
||||
struct nk_draw_null_texture null;
|
||||
GLuint vbo, vao, ebo;
|
||||
GLuint prog;
|
||||
GLuint vert_shdr;
|
||||
GLuint frag_shdr;
|
||||
GLint attrib_pos;
|
||||
GLint attrib_uv;
|
||||
GLint attrib_col;
|
||||
GLint uniform_tex;
|
||||
GLint uniform_proj;
|
||||
int font_tex_index;
|
||||
int max_vertex_buffer;
|
||||
int max_element_buffer;
|
||||
struct nk_glfw_vertex *vert_buffer;
|
||||
int *elem_buffer;
|
||||
GLsync buffer_sync;
|
||||
GLuint tex_ids[NK_GLFW_MAX_TEXTURES];
|
||||
GLuint64 tex_handles[NK_GLFW_MAX_TEXTURES];
|
||||
};
|
||||
|
||||
static struct nk_glfw {
|
||||
GLFWwindow *win;
|
||||
int width, height;
|
||||
int display_width, display_height;
|
||||
struct nk_glfw_device ogl;
|
||||
struct nk_context ctx;
|
||||
struct nk_font_atlas atlas;
|
||||
struct nk_vec2 fb_scale;
|
||||
unsigned int text[NK_GLFW_TEXT_MAX];
|
||||
int text_len;
|
||||
struct nk_vec2 scroll;
|
||||
double last_button_click;
|
||||
int is_double_click_down;
|
||||
struct nk_vec2 double_click_pos;
|
||||
} glfw;
|
||||
|
||||
#define NK_SHADER_VERSION "#version 450 core\n"
|
||||
#define NK_SHADER_BINDLESS "#extension GL_ARB_bindless_texture : require\n"
|
||||
#define NK_SHADER_64BIT "#extension GL_ARB_gpu_shader_int64 : require\n"
|
||||
|
||||
NK_API void
|
||||
nk_glfw3_device_create()
|
||||
{
|
||||
GLint status;
|
||||
static const GLchar *vertex_shader =
|
||||
NK_SHADER_VERSION
|
||||
NK_SHADER_BINDLESS
|
||||
NK_SHADER_64BIT
|
||||
"uniform mat4 ProjMtx;\n"
|
||||
"in vec2 Position;\n"
|
||||
"in vec2 TexCoord;\n"
|
||||
"in vec4 Color;\n"
|
||||
"out vec2 Frag_UV;\n"
|
||||
"out vec4 Frag_Color;\n"
|
||||
"void main() {\n"
|
||||
" Frag_UV = TexCoord;\n"
|
||||
" Frag_Color = Color;\n"
|
||||
" gl_Position = ProjMtx * vec4(Position.xy, 0, 1);\n"
|
||||
"}\n";
|
||||
static const GLchar *fragment_shader =
|
||||
NK_SHADER_VERSION
|
||||
NK_SHADER_BINDLESS
|
||||
NK_SHADER_64BIT
|
||||
"precision mediump float;\n"
|
||||
"uniform uint64_t Texture;\n"
|
||||
"in vec2 Frag_UV;\n"
|
||||
"in vec4 Frag_Color;\n"
|
||||
"out vec4 Out_Color;\n"
|
||||
"void main(){\n"
|
||||
" sampler2D smp = sampler2D(Texture);\n"
|
||||
" Out_Color = Frag_Color * texture(smp, Frag_UV.st);\n"
|
||||
"}\n";
|
||||
|
||||
struct nk_glfw_device *dev = &glfw.ogl;
|
||||
nk_buffer_init_default(&dev->cmds);
|
||||
dev->prog = glCreateProgram();
|
||||
dev->vert_shdr = glCreateShader(GL_VERTEX_SHADER);
|
||||
dev->frag_shdr = glCreateShader(GL_FRAGMENT_SHADER);
|
||||
glShaderSource(dev->vert_shdr, 1, &vertex_shader, 0);
|
||||
glShaderSource(dev->frag_shdr, 1, &fragment_shader, 0);
|
||||
glCompileShader(dev->vert_shdr);
|
||||
glCompileShader(dev->frag_shdr);
|
||||
glGetShaderiv(dev->vert_shdr, GL_COMPILE_STATUS, &status);
|
||||
|
||||
GLint len = 0;
|
||||
glGetShaderiv(dev->vert_shdr, GL_INFO_LOG_LENGTH, &len);
|
||||
if (len > 1) {
|
||||
char *log = calloc((size_t)len, sizeof(char));
|
||||
glGetShaderInfoLog(dev->vert_shdr, len, NULL, log);
|
||||
fprintf(stdout, "[GL]: failed to compile shader: %s", log);
|
||||
free(log);
|
||||
}
|
||||
|
||||
glGetShaderiv(dev->frag_shdr, GL_INFO_LOG_LENGTH, &len);
|
||||
if (len > 1) {
|
||||
char *log = calloc((size_t)len, sizeof(char));
|
||||
glGetShaderInfoLog(dev->frag_shdr, len, NULL, log);
|
||||
fprintf(stdout, "[GL]: failed to compile shader: %s", log);
|
||||
free(log);
|
||||
}
|
||||
|
||||
assert(status == GL_TRUE);
|
||||
glGetShaderiv(dev->frag_shdr, GL_COMPILE_STATUS, &status);
|
||||
assert(status == GL_TRUE);
|
||||
glAttachShader(dev->prog, dev->vert_shdr);
|
||||
glAttachShader(dev->prog, dev->frag_shdr);
|
||||
glLinkProgram(dev->prog);
|
||||
glGetProgramiv(dev->prog, GL_LINK_STATUS, &status);
|
||||
assert(status == GL_TRUE);
|
||||
|
||||
dev->uniform_tex = glGetUniformLocation(dev->prog, "Texture");
|
||||
dev->uniform_proj = glGetUniformLocation(dev->prog, "ProjMtx");
|
||||
dev->attrib_pos = glGetAttribLocation(dev->prog, "Position");
|
||||
dev->attrib_uv = glGetAttribLocation(dev->prog, "TexCoord");
|
||||
dev->attrib_col = glGetAttribLocation(dev->prog, "Color");
|
||||
|
||||
{
|
||||
/* buffer setup */
|
||||
GLsizei vs = sizeof(struct nk_glfw_vertex);
|
||||
size_t vp = offsetof(struct nk_glfw_vertex, position);
|
||||
size_t vt = offsetof(struct nk_glfw_vertex, uv);
|
||||
size_t vc = offsetof(struct nk_glfw_vertex, col);
|
||||
|
||||
GLuint pos = (GLuint)dev->attrib_pos;
|
||||
GLuint uv = (GLuint)dev->attrib_uv;
|
||||
GLuint col = (GLuint)dev->attrib_col;
|
||||
|
||||
glCreateVertexArrays(1, &dev->vao);
|
||||
glCreateBuffers(1, &dev->vbo);
|
||||
glCreateBuffers(1, &dev->ebo);
|
||||
|
||||
glEnableVertexArrayAttrib(dev->vao, pos);
|
||||
glEnableVertexArrayAttrib(dev->vao, uv);
|
||||
glEnableVertexArrayAttrib(dev->vao, col);
|
||||
|
||||
glVertexArrayAttribBinding(dev->vao, pos, 0);
|
||||
glVertexArrayAttribBinding(dev->vao, uv, 0);
|
||||
glVertexArrayAttribBinding(dev->vao, col, 0);
|
||||
|
||||
glVertexArrayAttribFormat(dev->vao, pos, 2, GL_FLOAT, GL_FALSE, vp);
|
||||
glVertexArrayAttribFormat(dev->vao, uv, 2, GL_FLOAT, GL_FALSE, vt);
|
||||
glVertexArrayAttribFormat(dev->vao, col, 4, GL_UNSIGNED_BYTE, GL_TRUE, vc);
|
||||
|
||||
glVertexArrayElementBuffer(dev->vao, dev->ebo);
|
||||
glVertexArrayVertexBuffer(dev->vao, 0, dev->vbo, 0, vs);
|
||||
}
|
||||
|
||||
/* Persistent mapped buffers */
|
||||
{GLsizei vb_size = dev->max_vertex_buffer;
|
||||
GLsizei eb_size = dev->max_element_buffer;
|
||||
GLbitfield flags = GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | GL_MAP_COHERENT_BIT;
|
||||
glNamedBufferStorage(dev->vbo, vb_size, 0, flags);
|
||||
glNamedBufferStorage(dev->ebo, eb_size, 0, flags);
|
||||
dev->vert_buffer = (struct nk_glfw_vertex*) glMapNamedBufferRange(dev->vbo, 0, vb_size, flags);
|
||||
dev->elem_buffer = (int*) glMapNamedBufferRange(dev->ebo, 0, eb_size, flags);}
|
||||
|
||||
memset(dev->tex_ids, 0, sizeof(dev->tex_ids));
|
||||
memset(dev->tex_handles, 0, sizeof(dev->tex_handles));
|
||||
}
|
||||
|
||||
NK_INTERN int
|
||||
nk_glfw3_get_available_tex_index()
|
||||
{
|
||||
int i = 0;
|
||||
struct nk_glfw_device *dev = &glfw.ogl;
|
||||
for (i = 0; i < NK_GLFW_MAX_TEXTURES; i++) {
|
||||
if (dev->tex_ids[i] == 0)
|
||||
return i;
|
||||
} assert(0); /* max textures reached */
|
||||
return -1;
|
||||
}
|
||||
|
||||
NK_API GLuint
|
||||
nk_glfw3_get_tex_ogl_id(int tex_index)
|
||||
{
|
||||
struct nk_glfw_device *dev = &glfw.ogl;
|
||||
assert(tex_index >= 0 && tex_index < NK_GLFW_MAX_TEXTURES);
|
||||
return dev->tex_ids[tex_index];
|
||||
}
|
||||
|
||||
NK_API GLuint64
|
||||
nk_glfw3_get_tex_ogl_handle(int tex_index)
|
||||
{
|
||||
struct nk_glfw_device *dev = &glfw.ogl;
|
||||
assert(tex_index >= 0 && tex_index < NK_GLFW_MAX_TEXTURES);
|
||||
return dev->tex_handles[tex_index];
|
||||
}
|
||||
|
||||
NK_API int
|
||||
nk_glfw3_create_texture(const void* image, int width, int height)
|
||||
{
|
||||
GLuint id;
|
||||
GLsizei w = (GLsizei)width;
|
||||
GLsizei h = (GLsizei)height;
|
||||
struct nk_glfw_device *dev = &glfw.ogl;
|
||||
int tex_index = nk_glfw3_get_available_tex_index();
|
||||
if (tex_index < 0)
|
||||
return -1;
|
||||
|
||||
glCreateTextures(GL_TEXTURE_2D, 1, &id);
|
||||
dev->tex_ids[tex_index] = id;
|
||||
|
||||
glTextureParameteri(id, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
|
||||
glTextureParameteri(id, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
|
||||
glTextureParameteri(id, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
||||
glTextureParameteri(id, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
||||
glTextureStorage2D(id, 1, GL_RGBA8, w, h);
|
||||
if (image)
|
||||
glTextureSubImage2D(id, 0, 0, 0, w, h, GL_RGBA, GL_UNSIGNED_BYTE, image);
|
||||
else glClearTexImage(id, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
|
||||
|
||||
{GLuint64 handle = glGetTextureHandleARB(id);
|
||||
glMakeTextureHandleResidentARB(handle);
|
||||
dev->tex_handles[tex_index] = handle;
|
||||
return tex_index;}
|
||||
}
|
||||
|
||||
NK_API void
|
||||
nk_glfw3_destroy_texture(int tex_index)
|
||||
{
|
||||
struct nk_glfw_device *dev = &glfw.ogl;
|
||||
GLuint id = nk_glfw3_get_tex_ogl_id(tex_index);
|
||||
if (id == 0) return;
|
||||
|
||||
{GLuint64 handle = nk_glfw3_get_tex_ogl_handle(tex_index);
|
||||
glMakeTextureHandleNonResidentARB(handle);
|
||||
glDeleteTextures(1, &id);
|
||||
dev->tex_ids[tex_index] = 0;
|
||||
dev->tex_handles[tex_index] = 0;}
|
||||
}
|
||||
|
||||
NK_INTERN void
|
||||
nk_glfw3_device_upload_atlas(const void *image, int width, int height)
|
||||
{
|
||||
struct nk_glfw_device *dev = &glfw.ogl;
|
||||
dev->font_tex_index = nk_glfw3_create_texture(image, width, height);
|
||||
}
|
||||
|
||||
NK_API void
|
||||
nk_glfw3_device_destroy(void)
|
||||
{
|
||||
int i = 0;
|
||||
struct nk_glfw_device *dev = &glfw.ogl;
|
||||
glDetachShader(dev->prog, dev->vert_shdr);
|
||||
glDetachShader(dev->prog, dev->frag_shdr);
|
||||
glDeleteShader(dev->vert_shdr);
|
||||
glDeleteShader(dev->frag_shdr);
|
||||
glDeleteProgram(dev->prog);
|
||||
nk_glfw3_destroy_texture(dev->font_tex_index);
|
||||
|
||||
for (i = 0; i < NK_GLFW_MAX_TEXTURES; i++)
|
||||
nk_glfw3_destroy_texture(i);
|
||||
glUnmapNamedBuffer(dev->vbo);
|
||||
glUnmapNamedBuffer(dev->ebo);
|
||||
glDeleteBuffers(1, &dev->vbo);
|
||||
glDeleteBuffers(1, &dev->ebo);
|
||||
glDeleteVertexArrays(1, &dev->vao);
|
||||
nk_buffer_free(&dev->cmds);
|
||||
}
|
||||
|
||||
NK_INTERN void
|
||||
nk_glfw3_wait_for_buffer_unlock()
|
||||
{
|
||||
struct nk_glfw_device *dev = &glfw.ogl;
|
||||
if(!dev->buffer_sync)
|
||||
return;
|
||||
|
||||
while (1) {
|
||||
GLenum wait = glClientWaitSync(dev->buffer_sync, GL_SYNC_FLUSH_COMMANDS_BIT, 1);
|
||||
if (wait == GL_ALREADY_SIGNALED || wait == GL_CONDITION_SATISFIED)
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
NK_INTERN void
|
||||
nk_glfw3_lock_buffer()
|
||||
{
|
||||
struct nk_glfw_device *dev = &glfw.ogl;
|
||||
if(dev->buffer_sync) glDeleteSync(dev->buffer_sync);
|
||||
dev->buffer_sync = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
|
||||
}
|
||||
|
||||
NK_API void
|
||||
nk_glfw3_render(enum nk_anti_aliasing AA)
|
||||
{
|
||||
struct nk_glfw_device *dev = &glfw.ogl;
|
||||
struct nk_buffer vbuf, ebuf;
|
||||
GLfloat ortho[4][4] = {
|
||||
{2.0f, 0.0f, 0.0f, 0.0f},
|
||||
{0.0f,-2.0f, 0.0f, 0.0f},
|
||||
{0.0f, 0.0f,-1.0f, 0.0f},
|
||||
{-1.0f,1.0f, 0.0f, 1.0f},
|
||||
};
|
||||
ortho[0][0] /= (GLfloat)glfw.width;
|
||||
ortho[1][1] /= (GLfloat)glfw.height;
|
||||
|
||||
/* setup global state */
|
||||
glEnable(GL_BLEND);
|
||||
glBlendEquation(GL_FUNC_ADD);
|
||||
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
||||
glDisable(GL_CULL_FACE);
|
||||
glDisable(GL_DEPTH_TEST);
|
||||
glEnable(GL_SCISSOR_TEST);
|
||||
|
||||
/* setup program */
|
||||
glUseProgram(dev->prog);
|
||||
glUniformMatrix4fv(dev->uniform_proj, 1, GL_FALSE, &ortho[0][0]);
|
||||
glViewport(0,0,(GLsizei)glfw.display_width,(GLsizei)glfw.display_height);
|
||||
{
|
||||
/* convert from command queue into draw list and draw to screen */
|
||||
const struct nk_draw_command *cmd;
|
||||
void *vertices, *elements;
|
||||
const nk_draw_index *offset = NULL;
|
||||
|
||||
glBindVertexArray(dev->vao);
|
||||
|
||||
/* load draw vertices & elements directly into vertex + element buffer */
|
||||
vertices = dev->vert_buffer;
|
||||
elements = dev->elem_buffer;
|
||||
{
|
||||
/* Wait until GPU is done with buffer */
|
||||
nk_glfw3_wait_for_buffer_unlock();
|
||||
{
|
||||
/* fill convert configuration */
|
||||
struct nk_convert_config config;
|
||||
static const struct nk_draw_vertex_layout_element vertex_layout[] = {
|
||||
{NK_VERTEX_POSITION, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_glfw_vertex, position)},
|
||||
{NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_glfw_vertex, uv)},
|
||||
{NK_VERTEX_COLOR, NK_FORMAT_R8G8B8A8, NK_OFFSETOF(struct nk_glfw_vertex, col)},
|
||||
{NK_VERTEX_LAYOUT_END}
|
||||
};
|
||||
NK_MEMSET(&config, 0, sizeof(config));
|
||||
config.vertex_layout = vertex_layout;
|
||||
config.vertex_size = sizeof(struct nk_glfw_vertex);
|
||||
config.vertex_alignment = NK_ALIGNOF(struct nk_glfw_vertex);
|
||||
config.null = dev->null;
|
||||
config.circle_segment_count = 22;
|
||||
config.curve_segment_count = 22;
|
||||
config.arc_segment_count = 22;
|
||||
config.global_alpha = 1.0f;
|
||||
config.shape_AA = AA;
|
||||
config.line_AA = AA;
|
||||
|
||||
/* setup buffers to load vertices and elements */
|
||||
nk_buffer_init_fixed(&vbuf, vertices, (size_t)dev->max_vertex_buffer);
|
||||
nk_buffer_init_fixed(&ebuf, elements, (size_t)dev->max_element_buffer);
|
||||
nk_convert(&glfw.ctx, &dev->cmds, &vbuf, &ebuf, &config);
|
||||
}
|
||||
}
|
||||
|
||||
/* iterate over and execute each draw command */
|
||||
nk_draw_foreach(cmd, &glfw.ctx, &dev->cmds)
|
||||
{
|
||||
int tex_index;
|
||||
GLuint64 tex_handle;
|
||||
if (!cmd->elem_count) continue;
|
||||
|
||||
tex_index = cmd->texture.id;
|
||||
tex_handle = nk_glfw3_get_tex_ogl_handle(tex_index);
|
||||
|
||||
/* tex handle must be made resident in each context that uses it */
|
||||
if (!glIsTextureHandleResidentARB(tex_handle))
|
||||
glMakeTextureHandleResidentARB(tex_handle);
|
||||
|
||||
glUniformHandleui64ARB(dev->uniform_tex, tex_handle);
|
||||
glScissor(
|
||||
(GLint)(cmd->clip_rect.x * glfw.fb_scale.x),
|
||||
(GLint)((glfw.height - (GLint)(cmd->clip_rect.y + cmd->clip_rect.h)) * glfw.fb_scale.y),
|
||||
(GLint)(cmd->clip_rect.w * glfw.fb_scale.x),
|
||||
(GLint)(cmd->clip_rect.h * glfw.fb_scale.y));
|
||||
glDrawElements(GL_TRIANGLES, (GLsizei)cmd->elem_count, GL_UNSIGNED_SHORT, offset);
|
||||
offset += cmd->elem_count;
|
||||
}
|
||||
nk_clear(&glfw.ctx);
|
||||
}
|
||||
/* default OpenGL state */
|
||||
glUseProgram(0);
|
||||
glBindVertexArray(0);
|
||||
glDisable(GL_BLEND);
|
||||
glDisable(GL_SCISSOR_TEST);
|
||||
/* Lock buffer until GPU has finished draw command */
|
||||
nk_glfw3_lock_buffer();
|
||||
}
|
||||
|
||||
NK_API void
|
||||
nk_glfw3_char_callback(GLFWwindow *win, unsigned int codepoint)
|
||||
{
|
||||
(void)win;
|
||||
if (glfw.text_len < NK_GLFW_TEXT_MAX)
|
||||
glfw.text[glfw.text_len++] = codepoint;
|
||||
}
|
||||
|
||||
NK_API void
|
||||
nk_gflw3_scroll_callback(GLFWwindow *win, double xoff, double yoff)
|
||||
{
|
||||
(void)win; (void)xoff;
|
||||
glfw.scroll.x += (float)xoff;
|
||||
glfw.scroll.y += (float)yoff;
|
||||
}
|
||||
|
||||
NK_API void
|
||||
nk_glfw3_mouse_button_callback(GLFWwindow* window, int button, int action, int mods)
|
||||
{
|
||||
double x, y;
|
||||
if (button != GLFW_MOUSE_BUTTON_LEFT) return;
|
||||
glfwGetCursorPos(window, &x, &y);
|
||||
if (action == GLFW_PRESS) {
|
||||
double dt = glfwGetTime() - glfw.last_button_click;
|
||||
if (dt > NK_GLFW_DOUBLE_CLICK_LO && dt < NK_GLFW_DOUBLE_CLICK_HI) {
|
||||
glfw.is_double_click_down = nk_true;
|
||||
glfw.double_click_pos = nk_vec2((float)x, (float)y);
|
||||
}
|
||||
glfw.last_button_click = glfwGetTime();
|
||||
} else glfw.is_double_click_down = nk_false;
|
||||
}
|
||||
|
||||
NK_INTERN void
|
||||
nk_glfw3_clipbard_paste(nk_handle usr, struct nk_text_edit *edit)
|
||||
{
|
||||
const char *text = glfwGetClipboardString(glfw.win);
|
||||
if (text) nk_textedit_paste(edit, text, nk_strlen(text));
|
||||
(void)usr;
|
||||
}
|
||||
|
||||
NK_INTERN void
|
||||
nk_glfw3_clipbard_copy(nk_handle usr, const char *text, int len)
|
||||
{
|
||||
char *str = 0;
|
||||
(void)usr;
|
||||
if (!len) return;
|
||||
str = (char*)malloc((size_t)len+1);
|
||||
if (!str) return;
|
||||
memcpy(str, text, (size_t)len);
|
||||
str[len] = '\0';
|
||||
glfwSetClipboardString(glfw.win, str);
|
||||
free(str);
|
||||
}
|
||||
|
||||
NK_API struct nk_context*
|
||||
nk_glfw3_init(GLFWwindow *win, enum nk_glfw_init_state init_state,
|
||||
int max_vertex_buffer, int max_element_buffer)
|
||||
{
|
||||
glfw.win = win;
|
||||
if (init_state == NK_GLFW3_INSTALL_CALLBACKS) {
|
||||
glfwSetScrollCallback(win, nk_gflw3_scroll_callback);
|
||||
glfwSetCharCallback(win, nk_glfw3_char_callback);
|
||||
glfwSetMouseButtonCallback(win, nk_glfw3_mouse_button_callback);
|
||||
}
|
||||
nk_init_default(&glfw.ctx, 0);
|
||||
glfw.ctx.clip.copy = nk_glfw3_clipbard_copy;
|
||||
glfw.ctx.clip.paste = nk_glfw3_clipbard_paste;
|
||||
glfw.ctx.clip.userdata = nk_handle_ptr(0);
|
||||
glfw.last_button_click = 0;
|
||||
|
||||
{struct nk_glfw_device *dev = &glfw.ogl;
|
||||
dev->max_vertex_buffer = max_vertex_buffer;
|
||||
dev->max_element_buffer = max_element_buffer;
|
||||
nk_glfw3_device_create();}
|
||||
|
||||
glfw.is_double_click_down = nk_false;
|
||||
glfw.double_click_pos = nk_vec2(0, 0);
|
||||
|
||||
return &glfw.ctx;
|
||||
}
|
||||
|
||||
NK_API void
|
||||
nk_glfw3_font_stash_begin(struct nk_font_atlas **atlas)
|
||||
{
|
||||
nk_font_atlas_init_default(&glfw.atlas);
|
||||
nk_font_atlas_begin(&glfw.atlas);
|
||||
*atlas = &glfw.atlas;
|
||||
}
|
||||
|
||||
NK_API void
|
||||
nk_glfw3_font_stash_end(void)
|
||||
{
|
||||
const void *image; int w, h;
|
||||
image = nk_font_atlas_bake(&glfw.atlas, &w, &h, NK_FONT_ATLAS_RGBA32);
|
||||
nk_glfw3_device_upload_atlas(image, w, h);
|
||||
nk_font_atlas_end(&glfw.atlas, nk_handle_id((int)glfw.ogl.font_tex_index), &glfw.ogl.null);
|
||||
if (glfw.atlas.default_font)
|
||||
nk_style_set_font(&glfw.ctx, &glfw.atlas.default_font->handle);
|
||||
}
|
||||
|
||||
NK_API void
|
||||
nk_glfw3_new_frame(void)
|
||||
{
|
||||
int i;
|
||||
double x, y;
|
||||
struct nk_context *ctx = &glfw.ctx;
|
||||
struct GLFWwindow *win = glfw.win;
|
||||
|
||||
glfwGetWindowSize(win, &glfw.width, &glfw.height);
|
||||
glfwGetFramebufferSize(win, &glfw.display_width, &glfw.display_height);
|
||||
glfw.fb_scale.x = (float)glfw.display_width/(float)glfw.width;
|
||||
glfw.fb_scale.y = (float)glfw.display_height/(float)glfw.height;
|
||||
|
||||
nk_input_begin(ctx);
|
||||
for (i = 0; i < glfw.text_len; ++i)
|
||||
nk_input_unicode(ctx, glfw.text[i]);
|
||||
|
||||
#ifdef NK_GLFW_GL4_MOUSE_GRABBING
|
||||
/* optional grabbing behavior */
|
||||
if (ctx->input.mouse.grab)
|
||||
glfwSetInputMode(glfw.win, GLFW_CURSOR, GLFW_CURSOR_HIDDEN);
|
||||
else if (ctx->input.mouse.ungrab)
|
||||
glfwSetInputMode(glfw.win, GLFW_CURSOR, GLFW_CURSOR_NORMAL);
|
||||
#endif
|
||||
|
||||
nk_input_key(ctx, NK_KEY_DEL, glfwGetKey(win, GLFW_KEY_DELETE) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_ENTER, glfwGetKey(win, GLFW_KEY_ENTER) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_TAB, glfwGetKey(win, GLFW_KEY_TAB) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_BACKSPACE, glfwGetKey(win, GLFW_KEY_BACKSPACE) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_UP, glfwGetKey(win, GLFW_KEY_UP) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_DOWN, glfwGetKey(win, GLFW_KEY_DOWN) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_TEXT_START, glfwGetKey(win, GLFW_KEY_HOME) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_TEXT_END, glfwGetKey(win, GLFW_KEY_END) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_SCROLL_START, glfwGetKey(win, GLFW_KEY_HOME) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_SCROLL_END, glfwGetKey(win, GLFW_KEY_END) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_SCROLL_DOWN, glfwGetKey(win, GLFW_KEY_PAGE_DOWN) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_SCROLL_UP, glfwGetKey(win, GLFW_KEY_PAGE_UP) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_SHIFT, glfwGetKey(win, GLFW_KEY_LEFT_SHIFT) == GLFW_PRESS||
|
||||
glfwGetKey(win, GLFW_KEY_RIGHT_SHIFT) == GLFW_PRESS);
|
||||
|
||||
if (glfwGetKey(win, GLFW_KEY_LEFT_CONTROL) == GLFW_PRESS ||
|
||||
glfwGetKey(win, GLFW_KEY_RIGHT_CONTROL) == GLFW_PRESS) {
|
||||
nk_input_key(ctx, NK_KEY_COPY, glfwGetKey(win, GLFW_KEY_C) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_PASTE, glfwGetKey(win, GLFW_KEY_V) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_CUT, glfwGetKey(win, GLFW_KEY_X) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_TEXT_UNDO, glfwGetKey(win, GLFW_KEY_Z) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_TEXT_REDO, glfwGetKey(win, GLFW_KEY_R) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_TEXT_WORD_LEFT, glfwGetKey(win, GLFW_KEY_LEFT) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_TEXT_WORD_RIGHT, glfwGetKey(win, GLFW_KEY_RIGHT) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_TEXT_LINE_START, glfwGetKey(win, GLFW_KEY_B) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_TEXT_LINE_END, glfwGetKey(win, GLFW_KEY_E) == GLFW_PRESS);
|
||||
} else {
|
||||
nk_input_key(ctx, NK_KEY_LEFT, glfwGetKey(win, GLFW_KEY_LEFT) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_RIGHT, glfwGetKey(win, GLFW_KEY_RIGHT) == GLFW_PRESS);
|
||||
nk_input_key(ctx, NK_KEY_COPY, 0);
|
||||
nk_input_key(ctx, NK_KEY_PASTE, 0);
|
||||
nk_input_key(ctx, NK_KEY_CUT, 0);
|
||||
nk_input_key(ctx, NK_KEY_SHIFT, 0);
|
||||
}
|
||||
|
||||
glfwGetCursorPos(win, &x, &y);
|
||||
nk_input_motion(ctx, (int)x, (int)y);
|
||||
#ifdef NK_GLFW_GL4_MOUSE_GRABBING
|
||||
if (ctx->input.mouse.grabbed) {
|
||||
glfwSetCursorPos(glfw.win, ctx->input.mouse.prev.x, ctx->input.mouse.prev.y);
|
||||
ctx->input.mouse.pos.x = ctx->input.mouse.prev.x;
|
||||
ctx->input.mouse.pos.y = ctx->input.mouse.prev.y;
|
||||
}
|
||||
#endif
|
||||
nk_input_button(ctx, NK_BUTTON_LEFT, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_LEFT) == GLFW_PRESS);
|
||||
nk_input_button(ctx, NK_BUTTON_MIDDLE, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_MIDDLE) == GLFW_PRESS);
|
||||
nk_input_button(ctx, NK_BUTTON_RIGHT, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_RIGHT) == GLFW_PRESS);
|
||||
nk_input_button(ctx, NK_BUTTON_DOUBLE, (int)glfw.double_click_pos.x, (int)glfw.double_click_pos.y, glfw.is_double_click_down);
|
||||
nk_input_scroll(ctx, glfw.scroll);
|
||||
nk_input_end(&glfw.ctx);
|
||||
glfw.text_len = 0;
|
||||
glfw.scroll = nk_vec2(0,0);
|
||||
}
|
||||
|
||||
NK_API
|
||||
void nk_glfw3_shutdown(void)
|
||||
{
|
||||
nk_font_atlas_clear(&glfw.atlas);
|
||||
nk_free(&glfw.ctx);
|
||||
nk_glfw3_device_destroy();
|
||||
memset(&glfw, 0, sizeof(glfw));
|
||||
}
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue