Merge branch 'gles2' of https://github.com/DeXP/nuklear into DeXP--gles2
This commit is contained in:
vurtun
commit
af216a1be4
20
demo/sdl_opengles2/Makefile
Normal file
20
demo/sdl_opengles2/Makefile
Normal file
@ -0,0 +1,20 @@
|
||||
# Install
|
||||
BIN = demo
|
||||
|
||||
# Flags
|
||||
CFLAGS = -std=c99 -pedantic -O2
|
||||
|
||||
SRC = main.c
|
||||
OBJ = $(SRC:.c=.o)
|
||||
|
||||
UNAME_S := $(shell uname -s)
|
||||
ifeq ($(UNAME_S),Darwin)
|
||||
LIBS = -lSDL2 -framework OpenGLES -lm -lGLEW
|
||||
else
|
||||
LIBS = -lSDL2 -lGLESv2 -lm -lGLU -lGLEW
|
||||
endif
|
||||
|
||||
$(BIN):
|
||||
@mkdir -p bin
|
||||
rm -f bin/$(BIN) $(OBJS)
|
||||
$(CC) $(SRC) $(CFLAGS) -o bin/$(BIN) $(LIBS)
|
||||
195
demo/sdl_opengles2/main.c
Normal file
195
demo/sdl_opengles2/main.c
Normal file
@ -0,0 +1,195 @@
|
||||
/* nuklear - 1.40.8 - public domain */
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <stdint.h>
|
||||
#include <stdarg.h>
|
||||
#include <string.h>
|
||||
#include <math.h>
|
||||
#include <assert.h>
|
||||
#include <math.h>
|
||||
#include <limits.h>
|
||||
#include <time.h>
|
||||
|
||||
#include <GL/glew.h>
|
||||
#include <SDL2/SDL.h>
|
||||
#include <SDL2/SDL_opengles2.h>
|
||||
|
||||
#define NK_INCLUDE_FIXED_TYPES
|
||||
#define NK_INCLUDE_STANDARD_IO
|
||||
#define NK_INCLUDE_STANDARD_VARARGS
|
||||
#define NK_INCLUDE_DEFAULT_ALLOCATOR
|
||||
#define NK_INCLUDE_VERTEX_BUFFER_OUTPUT
|
||||
#define NK_INCLUDE_FONT_BAKING
|
||||
#define NK_INCLUDE_DEFAULT_FONT
|
||||
#define NK_IMPLEMENTATION
|
||||
#define NK_SDL_GLES2_IMPLEMENTATION
|
||||
#include "../../nuklear.h"
|
||||
#include "nuklear_sdl_gles2.h"
|
||||
|
||||
#define WINDOW_WIDTH 800
|
||||
#define WINDOW_HEIGHT 600
|
||||
|
||||
#define MAX_VERTEX_MEMORY 512 * 1024
|
||||
#define MAX_ELEMENT_MEMORY 128 * 1024
|
||||
|
||||
#define UNUSED(a) (void)a
|
||||
#define MIN(a,b) ((a) < (b) ? (a) : (b))
|
||||
#define MAX(a,b) ((a) < (b) ? (b) : (a))
|
||||
#define LEN(a) (sizeof(a)/sizeof(a)[0])
|
||||
|
||||
/* ===============================================================
|
||||
*
|
||||
* EXAMPLE
|
||||
*
|
||||
* ===============================================================*/
|
||||
/* This are some code examples to provide a small overview of what can be
|
||||
* done with this library. To try out an example uncomment the include
|
||||
* and the corresponding function. */
|
||||
/*#include "../style.c"*/
|
||||
/*#include "../calculator.c"*/
|
||||
/*#include "../overview.c"*/
|
||||
/*#include "../node_editor.c"*/
|
||||
|
||||
/* ===============================================================
|
||||
*
|
||||
* DEMO
|
||||
*
|
||||
* ===============================================================*/
|
||||
int
|
||||
main(int argc, char* argv[])
|
||||
{
|
||||
/* Platform */
|
||||
SDL_Window *win;
|
||||
SDL_GLContext glContext;
|
||||
struct nk_color background;
|
||||
int win_width, win_height;
|
||||
int running = 1;
|
||||
|
||||
/* GUI */
|
||||
struct nk_context *ctx;
|
||||
|
||||
/* SDL setup */
|
||||
SDL_SetHint(SDL_HINT_VIDEO_HIGHDPI_DISABLED, "0");
|
||||
/*SDL_Init(SDL_INIT_VIDEO|SDL_INIT_TIMER|SDL_INIT_EVENTS); // - do NOT init SDL on GL ES 2 */
|
||||
SDL_GL_SetAttribute (SDL_GL_CONTEXT_FLAGS, SDL_GL_CONTEXT_FORWARD_COMPATIBLE_FLAG);
|
||||
SDL_GL_SetAttribute (SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
|
||||
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
|
||||
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 3);
|
||||
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
|
||||
win = SDL_CreateWindow("Demo",
|
||||
SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
|
||||
WINDOW_WIDTH, WINDOW_HEIGHT, SDL_WINDOW_OPENGL|SDL_WINDOW_SHOWN|SDL_WINDOW_ALLOW_HIGHDPI);
|
||||
glContext = SDL_GL_CreateContext(win);
|
||||
SDL_GetWindowSize(win, &win_width, &win_height);
|
||||
|
||||
/* OpenGL setup */
|
||||
glViewport(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT);
|
||||
glewExperimental = 1;
|
||||
if (glewInit() != GLEW_OK) {
|
||||
fprintf(stderr, "Failed to setup GLEW\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
ctx = nk_sdl_init(win);
|
||||
/* Load Fonts: if none of these are loaded a default font will be used */
|
||||
/* Load Cursor: if you uncomment cursor loading please hide the cursor */
|
||||
{struct nk_font_atlas *atlas;
|
||||
nk_sdl_font_stash_begin(&atlas);
|
||||
/*struct nk_font *droid = nk_font_atlas_add_from_file(atlas, "../../../extra_font/DroidSans.ttf", 14, 0);*/
|
||||
/*struct nk_font *roboto = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Roboto-Regular.ttf", 16, 0);*/
|
||||
/*struct nk_font *future = nk_font_atlas_add_from_file(atlas, "../../../extra_font/kenvector_future_thin.ttf", 13, 0);*/
|
||||
/*struct nk_font *clean = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyClean.ttf", 12, 0);*/
|
||||
/*struct nk_font *tiny = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyTiny.ttf", 10, 0);*/
|
||||
/*struct nk_font *cousine = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Cousine-Regular.ttf", 13, 0);*/
|
||||
nk_sdl_font_stash_end();
|
||||
/*nk_style_load_all_cursors(ctx, atlas->cursors);*/
|
||||
/*nk_style_set_font(ctx, &roboto->handle)*/;}
|
||||
|
||||
/* style.c */
|
||||
/*set_style(ctx, THEME_WHITE);*/
|
||||
/*set_style(ctx, THEME_RED);*/
|
||||
/*set_style(ctx, THEME_BLUE);*/
|
||||
/*set_style(ctx, THEME_DARK);*/
|
||||
|
||||
background = nk_rgb(28,48,62);
|
||||
while (running)
|
||||
{
|
||||
/* Input */
|
||||
SDL_Event evt;
|
||||
nk_input_begin(ctx);
|
||||
while (SDL_PollEvent(&evt)) {
|
||||
if (evt.type == SDL_QUIT) goto cleanup;
|
||||
nk_sdl_handle_event(&evt);
|
||||
}
|
||||
nk_input_end(ctx);
|
||||
|
||||
|
||||
/* GUI */
|
||||
if (nk_begin(ctx, "Demo", nk_rect(50, 50, 200, 200),
|
||||
NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE|
|
||||
NK_WINDOW_CLOSABLE|NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE))
|
||||
{
|
||||
nk_menubar_begin(ctx);
|
||||
nk_layout_row_begin(ctx, NK_STATIC, 25, 2);
|
||||
nk_layout_row_push(ctx, 45);
|
||||
if (nk_menu_begin_label(ctx, "FILE", NK_TEXT_LEFT, nk_vec2(120, 200))) {
|
||||
nk_layout_row_dynamic(ctx, 30, 1);
|
||||
nk_menu_item_label(ctx, "OPEN", NK_TEXT_LEFT);
|
||||
nk_menu_item_label(ctx, "CLOSE", NK_TEXT_LEFT);
|
||||
nk_menu_end(ctx);
|
||||
}
|
||||
nk_layout_row_push(ctx, 45);
|
||||
if (nk_menu_begin_label(ctx, "EDIT", NK_TEXT_LEFT, nk_vec2(120, 200))) {
|
||||
nk_layout_row_dynamic(ctx, 30, 1);
|
||||
nk_menu_item_label(ctx, "COPY", NK_TEXT_LEFT);
|
||||
nk_menu_item_label(ctx, "CUT", NK_TEXT_LEFT);
|
||||
nk_menu_item_label(ctx, "PASTE", NK_TEXT_LEFT);
|
||||
nk_menu_end(ctx);
|
||||
}
|
||||
nk_layout_row_end(ctx);
|
||||
nk_menubar_end(ctx);
|
||||
|
||||
enum {EASY, HARD};
|
||||
static int op = EASY;
|
||||
static int property = 20;
|
||||
nk_layout_row_static(ctx, 30, 80, 1);
|
||||
if (nk_button_label(ctx, "button"))
|
||||
fprintf(stdout, "button pressed\n");
|
||||
nk_layout_row_dynamic(ctx, 30, 2);
|
||||
if (nk_option_label(ctx, "easy", op == EASY)) op = EASY;
|
||||
if (nk_option_label(ctx, "hard", op == HARD)) op = HARD;
|
||||
nk_layout_row_dynamic(ctx, 25, 1);
|
||||
nk_property_int(ctx, "Compression:", 0, &property, 100, 10, 1);
|
||||
}
|
||||
nk_end(ctx);
|
||||
|
||||
/* -------------- EXAMPLES ---------------- */
|
||||
/*calculator(ctx);*/
|
||||
/*overview(ctx);*/
|
||||
/*node_editor(ctx);*/
|
||||
/* ----------------------------------------- */
|
||||
|
||||
/* Draw */
|
||||
{float bg[4];
|
||||
nk_color_fv(bg, background);
|
||||
SDL_GetWindowSize(win, &win_width, &win_height);
|
||||
glViewport(0, 0, win_width, win_height);
|
||||
glClear(GL_COLOR_BUFFER_BIT);
|
||||
glClearColor(bg[0], bg[1], bg[2], bg[3]);
|
||||
/* IMPORTANT: `nk_sdl_render` modifies some global OpenGL state
|
||||
* with blending, scissor, face culling, depth test and viewport and
|
||||
* defaults everything back into a default state.
|
||||
* Make sure to either a.) save and restore or b.) reset your own state after
|
||||
* rendering the UI. */
|
||||
nk_sdl_render(NK_ANTI_ALIASING_ON, MAX_VERTEX_MEMORY, MAX_ELEMENT_MEMORY);
|
||||
SDL_GL_SwapWindow(win);}
|
||||
}
|
||||
|
||||
cleanup:
|
||||
nk_sdl_shutdown();
|
||||
SDL_GL_DeleteContext(glContext);
|
||||
SDL_DestroyWindow(win);
|
||||
SDL_Quit();
|
||||
return 0;
|
||||
}
|
||||
|
||||
443
demo/sdl_opengles2/nuklear_sdl_gles2.h
Normal file
443
demo/sdl_opengles2/nuklear_sdl_gles2.h
Normal file
@ -0,0 +1,443 @@
|
||||
/*
|
||||
* Nuklear - 1.40.8 - public domain
|
||||
* no warrenty implied; use at your own risk.
|
||||
* authored from 2015-2017 by Micha Mettke
|
||||
* emscripten from 2016 by Chris Willcocks
|
||||
* OpenGL ES 2.0 from 2017 by Dmitry Hrabrov a.k.a. DeXPeriX
|
||||
*/
|
||||
/*
|
||||
* ==============================================================
|
||||
*
|
||||
* API
|
||||
*
|
||||
* ===============================================================
|
||||
*/
|
||||
#ifndef NK_SDL_GLES2_H_
|
||||
#define NK_SDL_GLES2_H_
|
||||
|
||||
#include <SDL2/SDL.h>
|
||||
#include <SDL2/SDL_opengles2.h>
|
||||
|
||||
|
||||
NK_API struct nk_context* nk_sdl_init(SDL_Window *win);
|
||||
NK_API void nk_sdl_font_stash_begin(struct nk_font_atlas **atlas);
|
||||
NK_API void nk_sdl_font_stash_end(void);
|
||||
NK_API int nk_sdl_handle_event(SDL_Event *evt);
|
||||
NK_API void nk_sdl_render(enum nk_anti_aliasing , int max_vertex_buffer, int max_element_buffer);
|
||||
NK_API void nk_sdl_shutdown(void);
|
||||
NK_API void nk_sdl_device_destroy(void);
|
||||
NK_API void nk_sdl_device_create(void);
|
||||
|
||||
#endif
|
||||
|
||||
/*
|
||||
* ==============================================================
|
||||
*
|
||||
* IMPLEMENTATION
|
||||
*
|
||||
* ===============================================================
|
||||
*/
|
||||
#ifdef NK_SDL_GLES2_IMPLEMENTATION
|
||||
|
||||
#include <string.h>
|
||||
|
||||
struct nk_sdl_device {
|
||||
struct nk_buffer cmds;
|
||||
struct nk_draw_null_texture null;
|
||||
GLuint vbo, ebo;
|
||||
GLuint prog;
|
||||
GLuint vert_shdr;
|
||||
GLuint frag_shdr;
|
||||
GLint attrib_pos;
|
||||
GLint attrib_uv;
|
||||
GLint attrib_col;
|
||||
GLint uniform_tex;
|
||||
GLint uniform_proj;
|
||||
GLuint font_tex;
|
||||
GLsizei vs;
|
||||
size_t vp, vt, vc;
|
||||
};
|
||||
|
||||
struct nk_sdl_vertex {
|
||||
GLfloat position[2];
|
||||
GLfloat uv[2];
|
||||
nk_byte col[4];
|
||||
};
|
||||
|
||||
static struct nk_sdl {
|
||||
SDL_Window *win;
|
||||
struct nk_sdl_device ogl;
|
||||
struct nk_context ctx;
|
||||
struct nk_font_atlas atlas;
|
||||
} sdl;
|
||||
|
||||
|
||||
#define NK_SHADER_VERSION "#version 100\n"
|
||||
|
||||
|
||||
NK_API void
|
||||
nk_sdl_device_create(void)
|
||||
{
|
||||
GLint status;
|
||||
static const GLchar *vertex_shader =
|
||||
NK_SHADER_VERSION
|
||||
"uniform mat4 ProjMtx;\n"
|
||||
"attribute vec2 Position;\n"
|
||||
"attribute vec2 TexCoord;\n"
|
||||
"attribute vec4 Color;\n"
|
||||
"varying vec2 Frag_UV;\n"
|
||||
"varying 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
|
||||
"precision mediump float;\n"
|
||||
"uniform sampler2D Texture;\n"
|
||||
"varying vec2 Frag_UV;\n"
|
||||
"varying vec4 Frag_Color;\n"
|
||||
"void main(){\n"
|
||||
" gl_FragColor = Frag_Color * texture2D(Texture, Frag_UV);\n"
|
||||
"}\n";
|
||||
|
||||
struct nk_sdl_device *dev = &sdl.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);
|
||||
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");
|
||||
{
|
||||
dev->vs = sizeof(struct nk_sdl_vertex);
|
||||
dev->vp = offsetof(struct nk_sdl_vertex, position);
|
||||
dev->vt = offsetof(struct nk_sdl_vertex, uv);
|
||||
dev->vc = offsetof(struct nk_sdl_vertex, col);
|
||||
|
||||
/* Allocate buffers */
|
||||
glGenBuffers(1, &dev->vbo);
|
||||
glGenBuffers(1, &dev->ebo);
|
||||
}
|
||||
glBindTexture(GL_TEXTURE_2D, 0);
|
||||
glBindBuffer(GL_ARRAY_BUFFER, 0);
|
||||
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
|
||||
}
|
||||
|
||||
NK_INTERN void
|
||||
nk_sdl_device_upload_atlas(const void *image, int width, int height)
|
||||
{
|
||||
struct nk_sdl_device *dev = &sdl.ogl;
|
||||
glGenTextures(1, &dev->font_tex);
|
||||
glBindTexture(GL_TEXTURE_2D, dev->font_tex);
|
||||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
||||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
||||
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)width, (GLsizei)height, 0,
|
||||
GL_RGBA, GL_UNSIGNED_BYTE, image);
|
||||
}
|
||||
|
||||
NK_API void
|
||||
nk_sdl_device_destroy(void)
|
||||
{
|
||||
struct nk_sdl_device *dev = &sdl.ogl;
|
||||
glDetachShader(dev->prog, dev->vert_shdr);
|
||||
glDetachShader(dev->prog, dev->frag_shdr);
|
||||
glDeleteShader(dev->vert_shdr);
|
||||
glDeleteShader(dev->frag_shdr);
|
||||
glDeleteProgram(dev->prog);
|
||||
glDeleteTextures(1, &dev->font_tex);
|
||||
glDeleteBuffers(1, &dev->vbo);
|
||||
glDeleteBuffers(1, &dev->ebo);
|
||||
nk_buffer_free(&dev->cmds);
|
||||
}
|
||||
|
||||
NK_API void
|
||||
nk_sdl_render(enum nk_anti_aliasing AA, int max_vertex_buffer, int max_element_buffer)
|
||||
{
|
||||
struct nk_sdl_device *dev = &sdl.ogl;
|
||||
int width, height;
|
||||
int display_width, display_height;
|
||||
struct nk_vec2 scale;
|
||||
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},
|
||||
};
|
||||
SDL_GetWindowSize(sdl.win, &width, &height);
|
||||
SDL_GL_GetDrawableSize(sdl.win, &display_width, &display_height);
|
||||
ortho[0][0] /= (GLfloat)width;
|
||||
ortho[1][1] /= (GLfloat)height;
|
||||
|
||||
scale.x = (float)display_width/(float)width;
|
||||
scale.y = (float)display_height/(float)height;
|
||||
|
||||
/* setup global state */
|
||||
glViewport(0,0,display_width,display_height);
|
||||
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);
|
||||
glActiveTexture(GL_TEXTURE0);
|
||||
|
||||
/* setup program */
|
||||
glUseProgram(dev->prog);
|
||||
glUniform1i(dev->uniform_tex, 0);
|
||||
glUniformMatrix4fv(dev->uniform_proj, 1, GL_FALSE, &ortho[0][0]);
|
||||
{
|
||||
/* 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;
|
||||
|
||||
/* Bind buffers */
|
||||
glBindBuffer(GL_ARRAY_BUFFER, dev->vbo);
|
||||
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, dev->ebo);
|
||||
|
||||
{
|
||||
/* buffer setup */
|
||||
glEnableVertexAttribArray((GLuint)dev->attrib_pos);
|
||||
glEnableVertexAttribArray((GLuint)dev->attrib_uv);
|
||||
glEnableVertexAttribArray((GLuint)dev->attrib_col);
|
||||
|
||||
glVertexAttribPointer((GLuint)dev->attrib_pos, 2, GL_FLOAT, GL_FALSE, dev->vs, (void*)dev->vp);
|
||||
glVertexAttribPointer((GLuint)dev->attrib_uv, 2, GL_FLOAT, GL_FALSE, dev->vs, (void*)dev->vt);
|
||||
glVertexAttribPointer((GLuint)dev->attrib_col, 4, GL_UNSIGNED_BYTE, GL_TRUE, dev->vs, (void*)dev->vc);
|
||||
}
|
||||
|
||||
glBufferData(GL_ARRAY_BUFFER, max_vertex_buffer, NULL, GL_STREAM_DRAW);
|
||||
glBufferData(GL_ELEMENT_ARRAY_BUFFER, max_element_buffer, NULL, GL_STREAM_DRAW);
|
||||
|
||||
/* load vertices/elements directly into vertex/element buffer */
|
||||
vertices = malloc((size_t)max_vertex_buffer);
|
||||
elements = malloc((size_t)max_element_buffer);
|
||||
{
|
||||
/* 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_sdl_vertex, position)},
|
||||
{NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_sdl_vertex, uv)},
|
||||
{NK_VERTEX_COLOR, NK_FORMAT_R8G8B8A8, NK_OFFSETOF(struct nk_sdl_vertex, col)},
|
||||
{NK_VERTEX_LAYOUT_END}
|
||||
};
|
||||
NK_MEMSET(&config, 0, sizeof(config));
|
||||
config.vertex_layout = vertex_layout;
|
||||
config.vertex_size = sizeof(struct nk_sdl_vertex);
|
||||
config.vertex_alignment = NK_ALIGNOF(struct nk_sdl_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 */
|
||||
{struct nk_buffer vbuf, ebuf;
|
||||
nk_buffer_init_fixed(&vbuf, vertices, (nk_size)max_vertex_buffer);
|
||||
nk_buffer_init_fixed(&ebuf, elements, (nk_size)max_element_buffer);
|
||||
nk_convert(&sdl.ctx, &dev->cmds, &vbuf, &ebuf, &config);}
|
||||
}
|
||||
glBufferSubData(GL_ARRAY_BUFFER, 0, (size_t)max_vertex_buffer, vertices);
|
||||
glBufferSubData(GL_ELEMENT_ARRAY_BUFFER, 0, (size_t)max_element_buffer, elements);
|
||||
free(vertices);
|
||||
free(elements);
|
||||
|
||||
/* iterate over and execute each draw command */
|
||||
nk_draw_foreach(cmd, &sdl.ctx, &dev->cmds) {
|
||||
if (!cmd->elem_count) continue;
|
||||
glBindTexture(GL_TEXTURE_2D, (GLuint)cmd->texture.id);
|
||||
glScissor((GLint)(cmd->clip_rect.x * scale.x),
|
||||
(GLint)((height - (GLint)(cmd->clip_rect.y + cmd->clip_rect.h)) * scale.y),
|
||||
(GLint)(cmd->clip_rect.w * scale.x),
|
||||
(GLint)(cmd->clip_rect.h * scale.y));
|
||||
glDrawElements(GL_TRIANGLES, (GLsizei)cmd->elem_count, GL_UNSIGNED_SHORT, offset);
|
||||
offset += cmd->elem_count;
|
||||
}
|
||||
nk_clear(&sdl.ctx);
|
||||
}
|
||||
|
||||
glUseProgram(0);
|
||||
glBindBuffer(GL_ARRAY_BUFFER, 0);
|
||||
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
|
||||
|
||||
glDisable(GL_BLEND);
|
||||
glDisable(GL_SCISSOR_TEST);
|
||||
}
|
||||
|
||||
static void
|
||||
nk_sdl_clipbard_paste(nk_handle usr, struct nk_text_edit *edit)
|
||||
{
|
||||
const char *text = SDL_GetClipboardText();
|
||||
if (text) nk_textedit_paste(edit, text, nk_strlen(text));
|
||||
(void)usr;
|
||||
}
|
||||
|
||||
static void
|
||||
nk_sdl_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';
|
||||
SDL_SetClipboardText(str);
|
||||
free(str);
|
||||
}
|
||||
|
||||
NK_API struct nk_context*
|
||||
nk_sdl_init(SDL_Window *win)
|
||||
{
|
||||
sdl.win = win;
|
||||
nk_init_default(&sdl.ctx, 0);
|
||||
sdl.ctx.clip.copy = nk_sdl_clipbard_copy;
|
||||
sdl.ctx.clip.paste = nk_sdl_clipbard_paste;
|
||||
sdl.ctx.clip.userdata = nk_handle_ptr(0);
|
||||
nk_sdl_device_create();
|
||||
return &sdl.ctx;
|
||||
}
|
||||
|
||||
NK_API void
|
||||
nk_sdl_font_stash_begin(struct nk_font_atlas **atlas)
|
||||
{
|
||||
nk_font_atlas_init_default(&sdl.atlas);
|
||||
nk_font_atlas_begin(&sdl.atlas);
|
||||
*atlas = &sdl.atlas;
|
||||
}
|
||||
|
||||
NK_API void
|
||||
nk_sdl_font_stash_end(void)
|
||||
{
|
||||
const void *image; int w, h;
|
||||
image = nk_font_atlas_bake(&sdl.atlas, &w, &h, NK_FONT_ATLAS_RGBA32);
|
||||
nk_sdl_device_upload_atlas(image, w, h);
|
||||
nk_font_atlas_end(&sdl.atlas, nk_handle_id((int)sdl.ogl.font_tex), &sdl.ogl.null);
|
||||
if (sdl.atlas.default_font)
|
||||
nk_style_set_font(&sdl.ctx, &sdl.atlas.default_font->handle);
|
||||
|
||||
}
|
||||
|
||||
NK_API int
|
||||
nk_sdl_handle_event(SDL_Event *evt)
|
||||
{
|
||||
struct nk_context *ctx = &sdl.ctx;
|
||||
if (evt->type == SDL_KEYUP || evt->type == SDL_KEYDOWN) {
|
||||
/* key events */
|
||||
int down = evt->type == SDL_KEYDOWN;
|
||||
const Uint8* state = SDL_GetKeyboardState(0);
|
||||
SDL_Keycode sym = evt->key.keysym.sym;
|
||||
if (sym == SDLK_RSHIFT || sym == SDLK_LSHIFT)
|
||||
nk_input_key(ctx, NK_KEY_SHIFT, down);
|
||||
else if (sym == SDLK_DELETE)
|
||||
nk_input_key(ctx, NK_KEY_DEL, down);
|
||||
else if (sym == SDLK_RETURN)
|
||||
nk_input_key(ctx, NK_KEY_ENTER, down);
|
||||
else if (sym == SDLK_TAB)
|
||||
nk_input_key(ctx, NK_KEY_TAB, down);
|
||||
else if (sym == SDLK_BACKSPACE)
|
||||
nk_input_key(ctx, NK_KEY_BACKSPACE, down);
|
||||
else if (sym == SDLK_HOME) {
|
||||
nk_input_key(ctx, NK_KEY_TEXT_START, down);
|
||||
nk_input_key(ctx, NK_KEY_SCROLL_START, down);
|
||||
} else if (sym == SDLK_END) {
|
||||
nk_input_key(ctx, NK_KEY_TEXT_END, down);
|
||||
nk_input_key(ctx, NK_KEY_SCROLL_END, down);
|
||||
} else if (sym == SDLK_PAGEDOWN) {
|
||||
nk_input_key(ctx, NK_KEY_SCROLL_DOWN, down);
|
||||
} else if (sym == SDLK_PAGEUP) {
|
||||
nk_input_key(ctx, NK_KEY_SCROLL_UP, down);
|
||||
} else if (sym == SDLK_z)
|
||||
nk_input_key(ctx, NK_KEY_TEXT_UNDO, down && state[SDL_SCANCODE_LCTRL]);
|
||||
else if (sym == SDLK_r)
|
||||
nk_input_key(ctx, NK_KEY_TEXT_REDO, down && state[SDL_SCANCODE_LCTRL]);
|
||||
else if (sym == SDLK_c)
|
||||
nk_input_key(ctx, NK_KEY_COPY, down && state[SDL_SCANCODE_LCTRL]);
|
||||
else if (sym == SDLK_v)
|
||||
nk_input_key(ctx, NK_KEY_PASTE, down && state[SDL_SCANCODE_LCTRL]);
|
||||
else if (sym == SDLK_x)
|
||||
nk_input_key(ctx, NK_KEY_CUT, down && state[SDL_SCANCODE_LCTRL]);
|
||||
else if (sym == SDLK_b)
|
||||
nk_input_key(ctx, NK_KEY_TEXT_LINE_START, down && state[SDL_SCANCODE_LCTRL]);
|
||||
else if (sym == SDLK_e)
|
||||
nk_input_key(ctx, NK_KEY_TEXT_LINE_END, down && state[SDL_SCANCODE_LCTRL]);
|
||||
else if (sym == SDLK_UP)
|
||||
nk_input_key(ctx, NK_KEY_UP, down);
|
||||
else if (sym == SDLK_DOWN)
|
||||
nk_input_key(ctx, NK_KEY_DOWN, down);
|
||||
else if (sym == SDLK_LEFT) {
|
||||
if (state[SDL_SCANCODE_LCTRL])
|
||||
nk_input_key(ctx, NK_KEY_TEXT_WORD_LEFT, down);
|
||||
else nk_input_key(ctx, NK_KEY_LEFT, down);
|
||||
} else if (sym == SDLK_RIGHT) {
|
||||
if (state[SDL_SCANCODE_LCTRL])
|
||||
nk_input_key(ctx, NK_KEY_TEXT_WORD_RIGHT, down);
|
||||
else nk_input_key(ctx, NK_KEY_RIGHT, down);
|
||||
} else return 0;
|
||||
return 1;
|
||||
} else if (evt->type == SDL_MOUSEBUTTONDOWN || evt->type == SDL_MOUSEBUTTONUP) {
|
||||
/* mouse button */
|
||||
int down = evt->type == SDL_MOUSEBUTTONDOWN;
|
||||
const int x = evt->button.x, y = evt->button.y;
|
||||
if (evt->button.button == SDL_BUTTON_LEFT) {
|
||||
if (evt->button.clicks > 1)
|
||||
nk_input_button(ctx, NK_BUTTON_DOUBLE, x, y, down);
|
||||
nk_input_button(ctx, NK_BUTTON_LEFT, x, y, down);
|
||||
} else if (evt->button.button == SDL_BUTTON_MIDDLE)
|
||||
nk_input_button(ctx, NK_BUTTON_MIDDLE, x, y, down);
|
||||
else if (evt->button.button == SDL_BUTTON_RIGHT)
|
||||
nk_input_button(ctx, NK_BUTTON_RIGHT, x, y, down);
|
||||
return 1;
|
||||
} else if (evt->type == SDL_MOUSEMOTION) {
|
||||
/* mouse motion */
|
||||
if (ctx->input.mouse.grabbed) {
|
||||
int x = (int)ctx->input.mouse.prev.x, y = (int)ctx->input.mouse.prev.y;
|
||||
nk_input_motion(ctx, x + evt->motion.xrel, y + evt->motion.yrel);
|
||||
} else nk_input_motion(ctx, evt->motion.x, evt->motion.y);
|
||||
return 1;
|
||||
} else if (evt->type == SDL_TEXTINPUT) {
|
||||
/* text input */
|
||||
nk_glyph glyph;
|
||||
memcpy(glyph, evt->text.text, NK_UTF_SIZE);
|
||||
nk_input_glyph(ctx, glyph);
|
||||
return 1;
|
||||
} else if (evt->type == SDL_MOUSEWHEEL) {
|
||||
/* mouse wheel */
|
||||
nk_input_scroll(ctx,nk_vec2((float)evt->wheel.x,(float)evt->wheel.y));
|
||||
return 1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
NK_API
|
||||
void nk_sdl_shutdown(void)
|
||||
{
|
||||
nk_font_atlas_clear(&sdl.atlas);
|
||||
nk_free(&sdl.ctx);
|
||||
nk_sdl_device_destroy();
|
||||
memset(&sdl, 0, sizeof(sdl));
|
||||
}
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user