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Camilla Berglund ago%!(EXTRA string=9 years)
parent 2ed818bc03
commit 40fff219b5
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  1. 1
      README.md
  2. 21490
      deps/nuklear.h
  3. 350
      deps/nuklear_glfw_gl2.h

1
README.md
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@ -80,6 +80,7 @@ located in the `deps/` directory.
[glad](https://github.com/Dav1dde/glad) for examples using modern OpenGL [glad](https://github.com/Dav1dde/glad) for examples using modern OpenGL
- [linmath.h](https://github.com/datenwolf/linmath.h) for linear algebra in - [linmath.h](https://github.com/datenwolf/linmath.h) for linear algebra in
examples examples
- [Nuklear](https://github.com/vurtun/nuklear) for test and example UI
- [Vulkan headers](https://www.khronos.org/registry/vulkan/) for Vulkan tests - [Vulkan headers](https://www.khronos.org/registry/vulkan/) for Vulkan tests
The Vulkan example additionally requires the Vulkan SDK to be installed, or it The Vulkan example additionally requires the Vulkan SDK to be installed, or it

21490
deps/nuklear.h vendored
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350
deps/nuklear_glfw_gl2.h vendored
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@ -0,0 +1,350 @@
/*
* Nuklear - v1.00 - public domain
* no warrenty implied; use at your own risk.
* authored from 2015-2016 by Micha Mettke
*/
/*
* ==============================================================
*
* API
*
* ===============================================================
*/
#ifndef NK_GLFW_GL2_H_
#define NK_GLFW_GL2_H_
#include <GLFW/glfw3.h>
enum nk_glfw_init_state{
NK_GLFW3_DEFAULT = 0,
NK_GLFW3_INSTALL_CALLBACKS
};
NK_API struct nk_context* nk_glfw3_init(GLFWwindow *win, enum nk_glfw_init_state);
NK_API void nk_glfw3_font_stash_begin(struct nk_font_atlas **atlas);
NK_API void nk_glfw3_font_stash_end(void);
NK_API void nk_glfw3_new_frame(void);
NK_API void nk_glfw3_render(enum nk_anti_aliasing , int max_vertex_buffer, int max_element_buffer);
NK_API void nk_glfw3_shutdown(void);
NK_API void nk_glfw3_char_callback(GLFWwindow *win, unsigned int codepoint);
NK_API void nk_gflw3_scroll_callback(GLFWwindow *win, double xoff, double yoff);
#endif
/*
* ==============================================================
*
* IMPLEMENTATION
*
* ===============================================================
*/
#ifdef NK_GLFW_GL2_IMPLEMENTATION
#ifndef NK_GLFW_TEXT_MAX
#define NK_GLFW_TEXT_MAX 256
#endif
struct nk_glfw_device {
struct nk_buffer cmds;
struct nk_draw_null_texture null;
GLuint font_tex;
};
struct nk_glfw_vertex {
float position[2];
float uv[2];
nk_byte col[4];
};
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;
float scroll;
} glfw;
NK_INTERN void
nk_glfw3_device_upload_atlas(const void *image, int width, int height)
{
struct nk_glfw_device *dev = &glfw.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_glfw3_render(enum nk_anti_aliasing AA, int max_vertex_buffer, int max_element_buffer)
{
/* setup global state */
struct nk_glfw_device *dev = &glfw.ogl;
glPushAttrib(GL_ENABLE_BIT|GL_COLOR_BUFFER_BIT|GL_TRANSFORM_BIT);
glDisable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
glEnable(GL_SCISSOR_TEST);
glEnable(GL_BLEND);
glEnable(GL_TEXTURE_2D);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
/* setup viewport/project */
glViewport(0,0,(GLsizei)glfw.display_width,(GLsizei)glfw.display_height);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
glOrtho(0.0f, glfw.width, glfw.height, 0.0f, -1.0f, 1.0f);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glEnableClientState(GL_COLOR_ARRAY);
{
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);
/* convert from command queue into draw list and draw to screen */
const struct nk_draw_command *cmd;
const nk_draw_index *offset = NULL;
struct nk_buffer vbuf, ebuf;
/* 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;
/* convert shapes into vertexes */
nk_buffer_init_default(&vbuf);
nk_buffer_init_default(&ebuf);
nk_convert(&glfw.ctx, &dev->cmds, &vbuf, &ebuf, &config);
/* setup vertex buffer pointer */
{const void *vertices = nk_buffer_memory_const(&vbuf);
glVertexPointer(2, GL_FLOAT, vs, (const void*)((const nk_byte*)vertices + vp));
glTexCoordPointer(2, GL_FLOAT, vs, (const void*)((const nk_byte*)vertices + vt));
glColorPointer(4, GL_UNSIGNED_BYTE, vs, (const void*)((const nk_byte*)vertices + vc));}
/* iterate over and execute each draw command */
offset = (const nk_draw_index*)nk_buffer_memory_const(&ebuf);
nk_draw_foreach(cmd, &glfw.ctx, &dev->cmds)
{
if (!cmd->elem_count) continue;
glBindTexture(GL_TEXTURE_2D, (GLuint)cmd->texture.id);
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);
nk_buffer_free(&vbuf);
nk_buffer_free(&ebuf);
}
/* default OpenGL state */
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glDisableClientState(GL_COLOR_ARRAY);
glDisable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
glDisable(GL_SCISSOR_TEST);
glDisable(GL_BLEND);
glDisable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, 0);
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glPopAttrib();
}
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 += (float)yoff;
}
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)
{
glfw.win = win;
if (init_state == NK_GLFW3_INSTALL_CALLBACKS) {
glfwSetScrollCallback(win, nk_gflw3_scroll_callback);
glfwSetCharCallback(win, nk_glfw3_char_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);
nk_buffer_init_default(&glfw.ogl.cmds);
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), &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]);
/* 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);
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_P) == 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);
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;
}
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_scroll(ctx, glfw.scroll);
nk_input_end(&glfw.ctx);
glfw.text_len = 0;
glfw.scroll = 0;
}
NK_API
void nk_glfw3_shutdown(void)
{
struct nk_glfw_device *dev = &glfw.ogl;
nk_font_atlas_clear(&glfw.atlas);
nk_free(&glfw.ctx);
glDeleteTextures(1, &dev->font_tex);
nk_buffer_free(&dev->cmds);
memset(&glfw, 0, sizeof(glfw));
}
#endif
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