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@@ -0,0 +1,628 @@
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+/*
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+ * Nuklear - 1.32.0 - public domain
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+ * 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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+ * ==============================================================
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+ *
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+ * API
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+ *
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+ * ===============================================================
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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{
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+ 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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+
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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);
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+
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+#endif
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+/*
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+ * ==============================================================
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+ *
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+ * IMPLEMENTATION
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+ *
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+ * ===============================================================
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+ */
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+#ifdef NK_GLFW_GL4_IMPLEMENTATION
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+#undef NK_GLFW_GL4_IMPLEMENTATION
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+
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+#ifndef NK_GLFW_TEXT_MAX
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+#define NK_GLFW_TEXT_MAX 256
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+#endif
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+#ifndef NK_GLFW_DOUBLE_CLICK_LO
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+#define NK_GLFW_DOUBLE_CLICK_LO 0.02
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+#endif
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+#ifndef NK_GLFW_DOUBLE_CLICK_HI
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+#define NK_GLFW_DOUBLE_CLICK_HI 0.2
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+#endif
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+#ifndef NK_GLFW_MAX_TEXTURES
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+#define NK_GLFW_MAX_TEXTURES 256
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+#endif
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+
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+struct nk_glfw_vertex {
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+ float position[2];
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+ float uv[2];
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+ nk_byte col[4];
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+};
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+
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+struct nk_glfw_device {
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+ struct nk_buffer cmds;
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+ struct nk_draw_null_texture null;
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+ GLuint vbo, vao, ebo;
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+ GLuint prog;
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+ GLuint vert_shdr;
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+ GLuint frag_shdr;
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+ GLint attrib_pos;
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+ GLint attrib_uv;
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+ GLint attrib_col;
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+ GLint uniform_tex;
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+ GLint uniform_proj;
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+ int font_tex_index;
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+ int max_vertex_buffer;
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+ int max_element_buffer;
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+ struct nk_glfw_vertex *vert_buffer;
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+ int *elem_buffer;
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+ GLsync buffer_sync;
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+ GLuint tex_ids[NK_GLFW_MAX_TEXTURES];
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+ GLuint64 tex_handles[NK_GLFW_MAX_TEXTURES];
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+};
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+
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+static struct nk_glfw {
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+ GLFWwindow *win;
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+ int width, height;
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+ int display_width, display_height;
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+ struct nk_glfw_device ogl;
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+ struct nk_context ctx;
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+ struct nk_font_atlas atlas;
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+ struct nk_vec2 fb_scale;
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+ unsigned int text[NK_GLFW_TEXT_MAX];
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+ int text_len;
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+ struct nk_vec2 scroll;
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+ double last_button_click;
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+ int is_double_click_down;
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+ struct nk_vec2 double_click_pos;
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+} glfw;
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+
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+#define NK_SHADER_VERSION "#version 450 core\n"
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+#define NK_SHADER_BINDLESS "#extension GL_ARB_bindless_texture : require\n"
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+#define NK_SHADER_64BIT "#extension GL_ARB_gpu_shader_int64 : require\n"
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+
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+NK_API void
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+nk_glfw3_device_create()
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+{
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+ GLint status;
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+ static const GLchar *vertex_shader =
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+ NK_SHADER_VERSION
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+ NK_SHADER_BINDLESS
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+ NK_SHADER_64BIT
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+ "uniform mat4 ProjMtx;\n"
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+ "in vec2 Position;\n"
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+ "in vec2 TexCoord;\n"
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+ "in vec4 Color;\n"
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+ "out vec2 Frag_UV;\n"
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+ "out vec4 Frag_Color;\n"
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+ "void main() {\n"
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+ " Frag_UV = TexCoord;\n"
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+ " Frag_Color = Color;\n"
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+ " gl_Position = ProjMtx * vec4(Position.xy, 0, 1);\n"
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+ "}\n";
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+ static const GLchar *fragment_shader =
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+ NK_SHADER_VERSION
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+ NK_SHADER_BINDLESS
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+ NK_SHADER_64BIT
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+ "precision mediump float;\n"
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+ "uniform uint64_t Texture;\n"
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+ "in vec2 Frag_UV;\n"
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+ "in vec4 Frag_Color;\n"
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+ "out vec4 Out_Color;\n"
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+ "void main(){\n"
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+ " sampler2D smp = sampler2D(Texture);\n"
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+ " Out_Color = Frag_Color * texture(smp, Frag_UV.st);\n"
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+ "}\n";
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+
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+ struct nk_glfw_device *dev = &glfw.ogl;
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+ nk_buffer_init_default(&dev->cmds);
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+ dev->prog = glCreateProgram();
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+ dev->vert_shdr = glCreateShader(GL_VERTEX_SHADER);
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+ dev->frag_shdr = glCreateShader(GL_FRAGMENT_SHADER);
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+ glShaderSource(dev->vert_shdr, 1, &vertex_shader, 0);
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+ glShaderSource(dev->frag_shdr, 1, &fragment_shader, 0);
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+ glCompileShader(dev->vert_shdr);
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+ glCompileShader(dev->frag_shdr);
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+ glGetShaderiv(dev->vert_shdr, GL_COMPILE_STATUS, &status);
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+ assert(status == GL_TRUE);
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+ glGetShaderiv(dev->frag_shdr, GL_COMPILE_STATUS, &status);
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+ assert(status == GL_TRUE);
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+ glAttachShader(dev->prog, dev->vert_shdr);
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+ glAttachShader(dev->prog, dev->frag_shdr);
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+ glLinkProgram(dev->prog);
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+ glGetProgramiv(dev->prog, GL_LINK_STATUS, &status);
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+ assert(status == GL_TRUE);
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+
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+ dev->uniform_tex = glGetUniformLocation(dev->prog, "Texture");
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+ dev->uniform_proj = glGetUniformLocation(dev->prog, "ProjMtx");
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+ dev->attrib_pos = glGetAttribLocation(dev->prog, "Position");
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+ dev->attrib_uv = glGetAttribLocation(dev->prog, "TexCoord");
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+ dev->attrib_col = glGetAttribLocation(dev->prog, "Color");
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+
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+ {
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+ /* buffer setup */
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+ GLsizei vs = sizeof(struct nk_glfw_vertex);
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+ size_t vp = offsetof(struct nk_glfw_vertex, position);
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+ size_t vt = offsetof(struct nk_glfw_vertex, uv);
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+ size_t vc = offsetof(struct nk_glfw_vertex, col);
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+
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+ GLuint pos = (GLuint)dev->attrib_pos;
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+ GLuint uv = (GLuint)dev->attrib_uv;
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+ GLuint col = (GLuint)dev->attrib_col;
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+
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+ glCreateVertexArrays(1, &dev->vao);
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+ glCreateBuffers(1, &dev->vbo);
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+ glCreateBuffers(1, &dev->ebo);
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+
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+ glEnableVertexArrayAttrib(dev->vao, pos);
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+ glEnableVertexArrayAttrib(dev->vao, uv);
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+ glEnableVertexArrayAttrib(dev->vao, col);
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+
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+ glVertexArrayAttribBinding(dev->vao, pos, 0);
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+ glVertexArrayAttribBinding(dev->vao, uv, 0);
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+ glVertexArrayAttribBinding(dev->vao, col, 0);
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+
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+ glVertexArrayAttribFormat(dev->vao, pos, 2, GL_FLOAT, GL_FALSE, vp);
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+ glVertexArrayAttribFormat(dev->vao, uv, 2, GL_FLOAT, GL_FALSE, vt);
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+ glVertexArrayAttribFormat(dev->vao, col, 4, GL_UNSIGNED_BYTE, GL_TRUE, vc);
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+
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+ glVertexArrayElementBuffer(dev->vao, dev->ebo);
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+ glVertexArrayVertexBuffer(dev->vao, 0, dev->vbo, 0, vs);
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+ }
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+
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+ /* Persistent mapped buffers */
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+ GLsizei vb_size = dev->max_vertex_buffer;
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+ GLsizei eb_size = dev->max_element_buffer;
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+ GLbitfield flags = GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | GL_MAP_COHERENT_BIT;
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+ glNamedBufferStorage(dev->vbo, vb_size, 0, flags);
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+ glNamedBufferStorage(dev->ebo, eb_size, 0, flags);
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+ dev->vert_buffer = (struct nk_glfw_vertex*) glMapNamedBufferRange(dev->vbo, 0, vb_size, flags);
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+ dev->elem_buffer = (int*) glMapNamedBufferRange(dev->ebo, 0, eb_size, flags);
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+
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+ memset(dev->tex_ids, 0, sizeof(dev->tex_ids));
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+ memset(dev->tex_handles, 0, sizeof(dev->tex_handles));
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+}
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+
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+NK_INTERN int
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+nk_glfw3_get_available_tex_index()
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+{
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+ struct nk_glfw_device *dev = &glfw.ogl;
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+ for (int i=0; i<NK_GLFW_MAX_TEXTURES; i++) {
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+ if (dev->tex_ids[i] == 0)
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+ return i;
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+ }
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+
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+ assert(0); /* max textures reached */
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+ return -1;
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+}
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+
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+NK_API GLuint
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+nk_glfw3_get_tex_ogl_id(int tex_index)
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+{
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+ struct nk_glfw_device *dev = &glfw.ogl;
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+ assert(tex_index >= 0 && tex_index < NK_GLFW_MAX_TEXTURES);
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+ return dev->tex_ids[tex_index];
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+}
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+
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+NK_API GLuint64
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+nk_glfw3_get_tex_ogl_handle(int tex_index)
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+{
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+ struct nk_glfw_device *dev = &glfw.ogl;
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+ assert(tex_index >= 0 && tex_index < NK_GLFW_MAX_TEXTURES);
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+ return dev->tex_handles[tex_index];
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+}
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+
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+NK_API int
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+nk_glfw3_create_texture(const void* image, int width, int height)
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+{
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+ struct nk_glfw_device *dev = &glfw.ogl;
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+
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+ int tex_index = nk_glfw3_get_available_tex_index();
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+ if (tex_index < 0)
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+ return -1;
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+
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+ GLsizei w = (GLsizei)width;
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+ GLsizei h = (GLsizei)height;
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+
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+ GLuint id;
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+ glCreateTextures(GL_TEXTURE_2D, 1, &id);
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+ dev->tex_ids[tex_index] = id;
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+
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+ glTextureParameteri(id, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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+ glTextureParameteri(id, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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+ glTextureParameteri(id, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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+ glTextureParameteri(id, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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+ glTextureStorage2D(id, 1, GL_RGBA8, w, h);
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+ if (image)
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+ glTextureSubImage2D(id, 0, 0, 0, w, h, GL_RGBA, GL_UNSIGNED_BYTE, image);
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+ else
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+ glClearTexImage(id, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
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+
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+ GLuint64 handle = glGetTextureHandleARB(id);
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+ glMakeTextureHandleResidentARB(handle);
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+ dev->tex_handles[tex_index] = handle;
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+
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+ return tex_index;
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+}
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+
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+NK_API void
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+nk_glfw3_destroy_texture(int tex_index)
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+{
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+ struct nk_glfw_device *dev = &glfw.ogl;
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+ GLuint id = nk_glfw3_get_tex_ogl_id(tex_index);
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+ if (id==0) return;
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+ GLuint64 handle = nk_glfw3_get_tex_ogl_handle(tex_index);
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+ glMakeTextureHandleNonResidentARB(handle);
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+ glDeleteTextures(1, &id);
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+ dev->tex_ids[tex_index] = 0;
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+ dev->tex_handles[tex_index] = 0;
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+}
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+
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+NK_INTERN void
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+nk_glfw3_device_upload_atlas(const void *image, int width, int height)
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+{
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+ struct nk_glfw_device *dev = &glfw.ogl;
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+ dev->font_tex_index = nk_glfw3_create_texture(image, width, height);
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+}
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+
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+NK_API void
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+nk_glfw3_device_destroy(void)
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+{
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+ struct nk_glfw_device *dev = &glfw.ogl;
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+ glDetachShader(dev->prog, dev->vert_shdr);
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+ glDetachShader(dev->prog, dev->frag_shdr);
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+ glDeleteShader(dev->vert_shdr);
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+ glDeleteShader(dev->frag_shdr);
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+ glDeleteProgram(dev->prog);
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+ nk_glfw3_destroy_texture(dev->font_tex_index);
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+ for (int i=0; i<NK_GLFW_MAX_TEXTURES; i++) { nk_glfw3_destroy_texture(i); }
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+ glUnmapNamedBuffer(dev->vbo);
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+ glUnmapNamedBuffer(dev->ebo);
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+ glDeleteBuffers(1, &dev->vbo);
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+ glDeleteBuffers(1, &dev->ebo);
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+ glDeleteVertexArrays(1, &dev->vao);
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+ nk_buffer_free(&dev->cmds);
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+}
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+
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+NK_INTERN void
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+nk_glfw3_wait_for_buffer_unlock()
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+{
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+ struct nk_glfw_device *dev = &glfw.ogl;
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+ if(!dev->buffer_sync)
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+ return;
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+
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+ while (1) {
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+ GLenum wait = glClientWaitSync(dev->buffer_sync, GL_SYNC_FLUSH_COMMANDS_BIT, 1);
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+ if (wait == GL_ALREADY_SIGNALED || wait == GL_CONDITION_SATISFIED)
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+ return;
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+ }
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+}
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+
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+NK_INTERN void
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+nk_glfw3_lock_buffer()
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+{
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+ struct nk_glfw_device *dev = &glfw.ogl;
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+ if(dev->buffer_sync) glDeleteSync(dev->buffer_sync);
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+ dev->buffer_sync = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
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+}
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+
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+NK_API void
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+nk_glfw3_render(enum nk_anti_aliasing AA)
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+{
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+ struct nk_glfw_device *dev = &glfw.ogl;
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+ struct nk_buffer vbuf, ebuf;
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+ GLfloat ortho[4][4] = {
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+ {2.0f, 0.0f, 0.0f, 0.0f},
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+ {0.0f,-2.0f, 0.0f, 0.0f},
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+ {0.0f, 0.0f,-1.0f, 0.0f},
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+ {-1.0f,1.0f, 0.0f, 1.0f},
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+ };
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+ ortho[0][0] /= (GLfloat)glfw.width;
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+ ortho[1][1] /= (GLfloat)glfw.height;
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+
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+ /* setup global state */
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+ glEnable(GL_BLEND);
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+ glBlendEquation(GL_FUNC_ADD);
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+ glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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+ glDisable(GL_CULL_FACE);
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+ glDisable(GL_DEPTH_TEST);
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+ glEnable(GL_SCISSOR_TEST);
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+
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+ /* setup program */
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|
|
+ 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);
|
|
|
+
|
|
|
+ /* Lock buffer until GPU has finished draw command */
|
|
|
+ nk_glfw3_lock_buffer();
|
|
|
+ }
|
|
|
+
|
|
|
+ /* iterate over and execute each draw command */
|
|
|
+ nk_draw_foreach(cmd, &glfw.ctx, &dev->cmds)
|
|
|
+ {
|
|
|
+ if (!cmd->elem_count) continue;
|
|
|
+ int tex_index = cmd->texture.id;
|
|
|
+ GLuint64 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);
|
|
|
+}
|
|
|
+
|
|
|
+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
|
Kees Rijnen