version 0.3.0

Fixes #111

kitty/borders.py

@@ -3,12 +3,14 @@
 # License: GPL v3 Copyright: 2016, Kovid Goyal <kovid at kovidgoyal.net>
 
 from ctypes import addressof
+from functools import partial
 from itertools import chain
 from threading import Lock
-from functools import partial
 
 from .constants import GLfloat, GLint, GLuint, viewport_size
-from .fast_data_types import GL_TRIANGLE_FAN, glMultiDrawArrays, glUniform3fv
+from .fast_data_types import (
+    GL_STATIC_DRAW, GL_TRIANGLE_FAN, glMultiDrawArrays, glUniform3fv
+)
 from .shaders import ShaderProgram
 from .utils import pt_to_px
 
@@ -50,10 +52,10 @@ void main() {
     final_color = vec4(color, 1);
 }
         ''')
-        self.add_vertex_array('rect')
+        self.vao_id = self.add_vertex_arrays(self.vertex_array('rect'))
 
     def send_data(self, data):
-        self.send_vertex_data('rect', data)
+        self.send_vertex_data(self.vao_id, data, usage=GL_STATIC_DRAW)
 
     def set_colors(self, color_buf):
         glUniform3fv(self.uniform_location('colors'), 3, addressof(color_buf))
@@ -149,7 +151,8 @@ class Borders:
                     program.send_data(self.rects)
                     program.set_colors(self.color_buf)
                     self.is_dirty = False
-                glMultiDrawArrays(
+                with program.bound_vertex_array(program.vao_id):
-                    GL_TRIANGLE_FAN,
+                    glMultiDrawArrays(
-                    addressof(self.starts),
+                        GL_TRIANGLE_FAN,
-                    addressof(self.counts), self.num_of_rects)
+                        addressof(self.starts),
+                        addressof(self.counts), self.num_of_rects)

kitty/boss.py

@@ -2,38 +2,42 @@
 # vim:fileencoding=utf-8
 # License: GPL v3 Copyright: 2016, Kovid Goyal <kovid at kovidgoyal.net>
 
-import os
+import inspect
 import io
+import os
 import select
 import signal
 import struct
-import inspect
 from functools import wraps
+from gettext import gettext as _
+from queue import Empty, Queue
 from threading import Thread, current_thread
 from time import monotonic
-from queue import Queue, Empty
-from gettext import gettext as _
 
+from .borders import BordersProgram
+from .char_grid import load_shader_programs
 from .config import MINIMUM_FONT_SIZE
 from .constants import (
-    viewport_size, set_boss, wakeup, cell_size, MODIFIER_KEYS,
+    MODIFIER_KEYS, cell_size, is_key_pressed, isosx, main_thread,
-    main_thread, mouse_button_pressed, mouse_cursor_pos
+    mouse_button_pressed, mouse_cursor_pos, set_boss, viewport_size, wakeup
 )
 from .fast_data_types import (
-    glViewport, glBlendFunc, GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GLFW_PRESS,
+    GL_ONE_MINUS_SRC_ALPHA, GL_SRC_ALPHA, GLFW_CURSOR, GLFW_CURSOR_HIDDEN,
-    GLFW_REPEAT, GLFW_MOUSE_BUTTON_1, glfw_post_empty_event,
+    GLFW_CURSOR_NORMAL, GLFW_MOUSE_BUTTON_1, GLFW_PRESS, GLFW_REPEAT,
-    GLFW_CURSOR_NORMAL, GLFW_CURSOR, GLFW_CURSOR_HIDDEN, drain_read
+    drain_read, glBlendFunc, glfw_post_empty_event, glViewport
 )
 from .fonts.render import set_font_family
-from .borders import BordersProgram
+from .keys import (
-from .char_grid import cursor_shader, cell_shader
+    get_sent_data, get_shortcut, interpret_key_event, interpret_text_event
-from .constants import is_key_pressed
+)
-from .keys import interpret_text_event, interpret_key_event, get_shortcut
 from .session import create_session
-from .shaders import Sprites, ShaderProgram
+from .shaders import Sprites
-from .tabs import TabManager, SpecialWindow
+from .tabs import SpecialWindow, TabManager
 from .timers import Timers
-from .utils import handle_unix_signals, safe_print, pipe2
+from .utils import handle_unix_signals, pipe2, safe_print
+
+if isosx:
+    from .fast_data_types import cocoa_update_title
 
 
 def conditional_run(w, i):
@@ -59,6 +63,7 @@ def callback(func):
             pass
         else:
             self.queue_action(conditional_run, w, i)
+
     return f
 
 
@@ -80,7 +85,9 @@ class Boss(Thread):
         self.screen_update_delay = opts.repaint_delay / 1000.0
         self.signal_fd = handle_unix_signals()
         self.read_wakeup_fd, self.write_wakeup_fd = pipe2()
-        self.read_dispatch_map = {self.signal_fd: self.signal_received, self.read_wakeup_fd: self.on_wakeup}
+        self.read_dispatch_map = {
+            self.signal_fd: self.signal_received,
+            self.read_wakeup_fd: self.on_wakeup}
         self.all_writers = []
         self.timers = Timers()
         self.ui_timers = Timers()
@@ -100,8 +107,7 @@ class Boss(Thread):
         glfw_window.window_focus_callback = self.on_focus
         self.tab_manager = TabManager(opts, args, startup_session)
         self.sprites = Sprites()
-        self.cell_program = ShaderProgram(*cell_shader)
+        self.cell_program, self.cursor_program = load_shader_programs()
-        self.cursor_program = ShaderProgram(*cursor_shader)
         self.borders_program = BordersProgram()
         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
         self.sprites.do_layout(cell_size.width, cell_size.height)
@@ -205,8 +211,10 @@ class Boss(Thread):
     def loop(self):
         while not self.shutting_down:
             all_readers = list(self.read_dispatch_map)
-            all_writers = [w.child_fd for w in self.iterwindows() if w.write_buf]
+            all_writers = [
-            readers, writers, _ = select.select(all_readers, all_writers, [], self.timers.timeout())
+                w.child_fd for w in self.iterwindows() if w.write_buf]
+            readers, writers, _ = select.select(
+                all_readers, all_writers, [], self.timers.timeout())
             for r in readers:
                 self.read_dispatch_map[r]()
             for w in writers:
@@ -214,7 +222,8 @@ class Boss(Thread):
             self.timers()
             for w in self.iterwindows():
                 if w.screen.is_dirty():
-                    self.timers.add_if_missing(self.screen_update_delay, w.update_screen)
+                    self.timers.add_if_missing(
+                        self.screen_update_delay, w.update_screen)
 
     @callback
     def on_window_resize(self, window, w, h):
@@ -231,10 +240,16 @@ class Boss(Thread):
         glfw_post_empty_event()
 
     def increase_font_size(self):
-        self.change_font_size(min(self.opts.font_size * 5, self.current_font_size + self.opts.font_size_delta))
+        self.change_font_size(
+            min(
+                self.opts.font_size * 5, self.current_font_size +
+                self.opts.font_size_delta))
 
     def decrease_font_size(self):
-        self.change_font_size(max(MINIMUM_FONT_SIZE, self.current_font_size - self.opts.font_size_delta))
+        self.change_font_size(
+            max(
+                MINIMUM_FONT_SIZE, self.current_font_size -
+                self.opts.font_size_delta))
 
     def restore_font_size(self):
         self.change_font_size(self.opts.font_size)
@@ -308,7 +323,9 @@ class Boss(Thread):
                     return
         if window.char_grid.scrolled_by and key not in MODIFIER_KEYS and action == GLFW_PRESS:
             window.scroll_end()
-        data = interpret_key_event(key, scancode, mods, window, action)
+        data = get_sent_data(
+            self.opts.send_text_map, key, scancode, mods, window, action
+        ) or interpret_key_event(key, scancode, mods, window, action)
         if data:
             window.write_to_child(data)
 
@@ -326,7 +343,9 @@ class Boss(Thread):
         else:
             tab = self.active_tab
             if tab is not None:
-                tab.new_special_window(SpecialWindow(self.opts.scrollback_pager, data, _('History')))
+                tab.new_special_window(
+                    SpecialWindow(
+                        self.opts.scrollback_pager, data, _('History')))
 
     def window_for_pos(self, x, y):
         tab = self.active_tab
@@ -365,7 +384,8 @@ class Boss(Thread):
 
     @callback
     def on_mouse_move(self, window, xpos, ypos):
-        mouse_cursor_pos[:2] = xpos, ypos = int(xpos * viewport_size.x_ratio), int(ypos * viewport_size.y_ratio)
+        mouse_cursor_pos[:2] = xpos, ypos = int(
+            xpos * viewport_size.x_ratio), int(ypos * viewport_size.y_ratio)
         self.show_mouse_cursor()
         w = self.window_for_pos(xpos, ypos)
         if w is not None:
@@ -387,7 +407,8 @@ class Boss(Thread):
     def show_mouse_cursor(self):
         self.glfw_window.set_input_mode(GLFW_CURSOR, GLFW_CURSOR_NORMAL)
         if self.opts.mouse_hide_wait > 0:
-            self.ui_timers.add(self.opts.mouse_hide_wait, self.hide_mouse_cursor)
+            self.ui_timers.add(
+                self.opts.mouse_hide_wait, self.hide_mouse_cursor)
 
     def hide_mouse_cursor(self):
         self.glfw_window.set_input_mode(GLFW_CURSOR, GLFW_CURSOR_HIDDEN)
@@ -399,12 +420,14 @@ class Boss(Thread):
         try:
             self.glfw_window.request_window_attention()
         except AttributeError:
-            pass   # needs glfw 3.3
+            pass  # needs glfw 3.3
 
     def start_cursor_blink(self):
         self.cursor_blinking = True
         if self.opts.cursor_stop_blinking_after > 0:
-            self.ui_timers.add(self.opts.cursor_stop_blinking_after, self.stop_cursor_blinking)
+            self.ui_timers.add(
+                self.opts.cursor_stop_blinking_after,
+                self.stop_cursor_blinking)
 
     def stop_cursor_blinking(self):
         self.cursor_blinking = False
@@ -420,15 +443,22 @@ class Boss(Thread):
             if tab.title != self.glfw_window_title:
                 self.glfw_window_title = tab.title
                 self.glfw_window.set_title(self.glfw_window_title)
+                if isosx:
+                    cocoa_update_title(self.glfw_window_title)
             with self.sprites:
                 self.sprites.render_dirty_cells()
                 tab.render()
-                render_data = {window: window.char_grid.prepare_for_render(self.sprites) for window in tab.visible_windows() if not window.needs_layout}
+                render_data = {
+                    window:
+                    window.char_grid.prepare_for_render(self.cell_program)
+                    for window in tab.visible_windows()
+                    if not window.needs_layout}
                 with self.cell_program:
                     self.tab_manager.render(self.cell_program, self.sprites)
                     for window, rd in render_data.items():
                         if rd is not None:
-                            window.render_cells(rd, self.cell_program, self.sprites)
+                            window.render_cells(
+                                rd, self.cell_program, self.sprites)
                 active = self.active_window
                 rd = render_data.get(active)
                 if rd is not None:
@@ -439,15 +469,16 @@ class Boss(Thread):
                         d = int(self.opts.cursor_blink_interval * 1000)
                         n = t // d
                         draw_cursor = n % 2 == 0
-                        self.ui_timers.add_if_missing(((n + 1) * d / 1000) - now, glfw_post_empty_event)
+                        self.ui_timers.add_if_missing(
+                            ((n + 1) * d / 1000) - now, glfw_post_empty_event)
                     if draw_cursor:
                         with self.cursor_program:
-                            active.char_grid.render_cursor(rd, self.cursor_program, self.window_is_focused)
+                            active.char_grid.render_cursor(
+                                rd, self.cursor_program,
+                                self.window_is_focused)
 
     def gui_close_window(self, window):
-        if window.char_grid.buffer_id is not None:
+        window.char_grid.destroy(self.cell_program)
-            self.sprites.destroy_sprite_map(window.char_grid.buffer_id)
-            window.char_grid.buffer_id = None
         for tab in self.tab_manager:
             if window in tab:
                 break
@@ -499,5 +530,8 @@ class Boss(Thread):
         self.queue_action(self.tab_manager.move_tab, -1)
 
     def display_scrollback_in_new_tab(self, data):
-        self.tab_manager.new_tab(special_window=SpecialWindow(self.opts.scrollback_pager, data, _('History')))
+        self.tab_manager.new_tab(
+            special_window=SpecialWindow(
+                self.opts.scrollback_pager, data, _('History')))
+
     # }}}

kitty/cell_fragment.glsl

@@ -0,0 +1,26 @@
+uniform sampler2DArray sprites;
+in vec3 sprite_pos;
+in vec3 underline_pos;
+in vec3 strike_pos;
+in vec3 foreground;
+in vec3 background;
+in vec3 decoration_fg;
+out vec4 final_color;
+
+vec3 blend(float alpha, vec3 over, vec3 under) {
+    return over + (1 - alpha) * under;
+}
+
+void main() {
+    float text_alpha = texture(sprites, sprite_pos).r;
+    float underline_alpha = texture(sprites, underline_pos).r;
+    float strike_alpha = texture(sprites, strike_pos).r;
+    vec3 underline = underline_alpha * decoration_fg;
+    vec3 strike = strike_alpha * foreground;
+    vec3 fg = text_alpha * foreground;
+    vec3 decoration = blend(underline_alpha, underline, strike);
+    vec3 combined_fg = blend(text_alpha, fg, decoration);
+    float combined_alpha = max(max(underline_alpha, strike_alpha), text_alpha);
+    final_color = vec4(blend(combined_alpha, combined_fg, background), 1);
+}
+

kitty/cell_vertex.glsl

@@ -0,0 +1,59 @@
+uniform uvec2 dimensions;  // xnum, ynum
+uniform vec4 steps;  // xstart, ystart, dx, dy
+uniform vec2 sprite_layout;  // dx, dy
+uniform ivec2 color_indices;  // which color to use as fg and which as bg
+in uvec3 sprite_coords;
+in uvec3 colors;
+out vec3 sprite_pos;
+out vec3 underline_pos;
+out vec3 strike_pos;
+out vec3 foreground;
+out vec3 background;
+out vec3 decoration_fg;
+
+const uvec2 pos_map[] = uvec2[4](
+    uvec2(1, 0),  // right, top
+    uvec2(1, 1),  // right, bottom
+    uvec2(0, 1),  // left, bottom
+    uvec2(0, 0)   // left, top
+);
+
+const uint BYTE_MASK = uint(255);
+const uint ZERO = uint(0);
+const uint SMASK = uint(3);
+
+vec3 to_color(uint c) {
+    uint r, g, b;
+    r = (c >> 16) & BYTE_MASK;
+    g = (c >> 8) & BYTE_MASK;
+    b = c & BYTE_MASK;
+    return vec3(float(r) / 255.0, float(g) / 255.0, float(b) / 255.0);
+}
+
+vec3 to_sprite_pos(uvec2 pos, uint x, uint y, uint z) {
+    vec2 s_xpos = vec2(x, float(x) + 1.0) * sprite_layout.x;
+    vec2 s_ypos = vec2(y, float(y) + 1.0) * sprite_layout.y;
+    return vec3(s_xpos[pos.x], s_ypos[pos.y], z);
+}
+
+void main() {
+    uint instance_id = uint(gl_InstanceID);
+    uint r = instance_id / dimensions[0];
+    uint c = instance_id - r * dimensions[0];
+    float left = steps[0] + c * steps[2];
+    float top = steps[1] - r * steps[3];
+    vec2 xpos = vec2(left, left + steps[2]);
+    vec2 ypos = vec2(top, top - steps[3]);
+    uvec2 pos = pos_map[gl_VertexID];
+    gl_Position = vec4(xpos[pos.x], ypos[pos.y], 0, 1);
+
+    sprite_pos = to_sprite_pos(pos, sprite_coords.x, sprite_coords.y, sprite_coords.z);
+    uint fg = colors[color_indices[0]];
+    uint bg = colors[color_indices[1]];
+    uint decoration = colors[2];
+    foreground = to_color(fg);
+    background = to_color(bg);
+    decoration_fg = to_color(decoration);
+    underline_pos = to_sprite_pos(pos, (decoration >> 24) & SMASK, ZERO, ZERO);
+    strike_pos = to_sprite_pos(pos, (decoration >> 26) & SMASK, ZERO, ZERO);
+}

kitty/char_grid.py

@@ -4,9 +4,9 @@
 
 import re
 import sys
-from enum import Enum
 from collections import namedtuple
 from ctypes import addressof, memmove, sizeof
+from enum import Enum
 from threading import Lock
 
 from .config import build_ansi_color_table, defaults
@@ -15,11 +15,12 @@ from .constants import (
 )
 from .fast_data_types import (
     CURSOR_BEAM, CURSOR_BLOCK, CURSOR_UNDERLINE, DATA_CELL_SIZE, GL_BLEND,
-    GL_LINE_LOOP, GL_TRIANGLE_FAN, ColorProfile, glDisable, glDrawArrays,
+    GL_LINE_LOOP, GL_TRIANGLE_FAN, GL_UNSIGNED_INT, ColorProfile, glDisable,
-    glDrawArraysInstanced, glEnable, glUniform1i, glUniform2f, glUniform2ui,
+    glDrawArrays, glDrawArraysInstanced, glEnable, glUniform1i, glUniform2f,
-    glUniform4f
+    glUniform2i, glUniform2ui, glUniform4f
 )
 from .rgb import to_color
+from .shaders import ShaderProgram, load_shaders
 from .utils import (
     color_as_int, color_from_int, get_logical_dpi, open_url, safe_print,
     set_primary_selection
@@ -32,133 +33,22 @@ class DynamicColor(Enum):
     default_fg, default_bg, cursor_color, highlight_fg, highlight_bg = range(1, 6)
 
 
-if DATA_CELL_SIZE % 3:
+class CellProgram(ShaderProgram):
-    raise ValueError('Incorrect data cell size, must be a multiple of 3')
+
+    def create_sprite_map(self):
+        stride = DATA_CELL_SIZE * sizeof(GLuint)
+        size = DATA_CELL_SIZE // 2
+        return self.add_vertex_arrays(
+            self.vertex_array('sprite_coords', size=size, dtype=GL_UNSIGNED_INT, stride=stride, divisor=1),
+            self.vertex_array('colors', size=size, dtype=GL_UNSIGNED_INT, stride=stride, offset=stride // 2, divisor=1),
+        )
 
 
-# cell shader {{{
+def load_shader_programs():
-
+    cell = CellProgram(*load_shaders('cell'))
-cell_shader = (
+    cursor = ShaderProgram(*load_shaders('cursor'))
-    '''\
+    cursor.vao_id = cursor.add_vertex_arrays()
-uniform uvec2 dimensions;  // xnum, ynum
+    return cell, cursor
-uniform vec4 steps;  // xstart, ystart, dx, dy
-uniform vec2 sprite_layout;  // dx, dy
-uniform usamplerBuffer sprite_map; // gl_InstanceID -> x, y, z
-uniform uvec2 color_indices;  // which color to use as fg and which as bg
-out vec3 sprite_pos;
-out vec3 underline_pos;
-out vec3 strike_pos;
-out vec3 foreground;
-out vec3 background;
-out vec3 decoration_fg;
-
-const uvec2 pos_map[] = uvec2[4](
-    uvec2(1, 0),  // right, top
-    uvec2(1, 1),  // right, bottom
-    uvec2(0, 1),  // left, bottom
-    uvec2(0, 0)   // left, top
-);
-
-const uint BYTE_MASK = uint(255);
-const uint ZERO = uint(0);
-const uint SMASK = uint(3);
-
-vec3 to_color(uint c) {
-    uint r, g, b;
-    r = (c >> 16) & BYTE_MASK;
-    g = (c >> 8) & BYTE_MASK;
-    b = c & BYTE_MASK;
-    return vec3(float(r) / 255.0, float(g) / 255.0, float(b) / 255.0);
-}
-
-vec3 to_sprite_pos(uvec2 pos, uint x, uint y, uint z) {
-    vec2 s_xpos = vec2(x, float(x) + 1.0) * sprite_layout[0];
-    vec2 s_ypos = vec2(y, float(y) + 1.0) * sprite_layout[1];
-    return vec3(s_xpos[pos[0]], s_ypos[pos[1]], z);
-}
-
-void main() {
-    uint instance_id = uint(gl_InstanceID);
-    uint r = instance_id / dimensions[0];
-    uint c = instance_id - r * dimensions[0];
-    float left = steps[0] + c * steps[2];
-    float top = steps[1] - r * steps[3];
-    vec2 xpos = vec2(left, left + steps[2]);
-    vec2 ypos = vec2(top, top - steps[3]);
-    uvec2 pos = pos_map[gl_VertexID];
-    gl_Position = vec4(xpos[pos[0]], ypos[pos[1]], 0, 1);
-
-    int sprite_id = gl_InstanceID * STRIDE;
-    uvec4 spos = texelFetch(sprite_map, sprite_id);
-    uvec4 colors = texelFetch(sprite_map, sprite_id + 1);
-    sprite_pos = to_sprite_pos(pos, spos[0], spos[1], spos[2]);
-    foreground = to_color(colors[color_indices[0]]);
-    background = to_color(colors[color_indices[1]]);
-    uint decoration = colors[2];
-    decoration_fg = to_color(decoration);
-    underline_pos = to_sprite_pos(pos, (decoration >> 24) & SMASK, ZERO, ZERO);
-    strike_pos = to_sprite_pos(pos, (decoration >> 26) & SMASK, ZERO, ZERO);
-}
-'''.replace('STRIDE', str(DATA_CELL_SIZE // 3)),
-
-    '''\
-uniform sampler2DArray sprites;
-in vec3 sprite_pos;
-in vec3 underline_pos;
-in vec3 strike_pos;
-in vec3 foreground;
-in vec3 background;
-in vec3 decoration_fg;
-out vec4 final_color;
-
-vec3 blend(float alpha, vec3 over, vec3 under) {
-    return over + (1 - alpha) * under;
-}
-
-void main() {
-    float text_alpha = texture(sprites, sprite_pos).r;
-    float underline_alpha = texture(sprites, underline_pos).r;
-    float strike_alpha = texture(sprites, strike_pos).r;
-    vec3 underline = underline_alpha * decoration_fg;
-    vec3 strike = strike_alpha * foreground;
-    vec3 fg = text_alpha * foreground;
-    vec3 decoration = blend(underline_alpha, underline, strike);
-    vec3 combined_fg = blend(text_alpha, fg, decoration);
-    float combined_alpha = max(max(underline_alpha, strike_alpha), text_alpha);
-    final_color = vec4(blend(combined_alpha, combined_fg, background), 1);
-}
-''')
-# }}}
-
-# cursor shader {{{
-
-cursor_shader = (
-    '''\
-uniform vec2 xpos;
-uniform vec2 ypos;
-
-const uvec2 pos_map[] = uvec2[4](
-    uvec2(1, 0),  // right, top
-    uvec2(1, 1),  // right, bottom
-    uvec2(0, 1),  // left, bottom
-    uvec2(0, 0)   // left, top
-);
-
-void main() {
-    uvec2 pos = pos_map[gl_VertexID];
-    gl_Position = vec4(xpos[pos[0]], ypos[pos[1]], 0, 1);
-}
-''',
-
-    '''\
-uniform vec4 color;
-out vec4 final_color;
-
-void main() {
-    final_color = color;
-}
-''')
-# }}}
 
 
 class Selection:  # {{{
@@ -230,16 +120,15 @@ def calculate_gl_geometry(window_geometry):
     return ScreenGeometry(xstart, ystart, window_geometry.xnum, window_geometry.ynum, dx, dy)
 
 
-def render_cells(buffer_id, sg, cell_program, sprites, invert_colors=False):
+def render_cells(vao_id, sg, cell_program, sprites, invert_colors=False):
-    sprites.bind_sprite_map(buffer_id)
     ul = cell_program.uniform_location
     glUniform2ui(ul('dimensions'), sg.xnum, sg.ynum)
-    glUniform2ui(ul('color_indices'), 1 if invert_colors else 0, 0 if invert_colors else 1)
+    glUniform2i(ul('color_indices'), 1 if invert_colors else 0, 0 if invert_colors else 1)
     glUniform4f(ul('steps'), sg.xstart, sg.ystart, sg.dx, sg.dy)
     glUniform1i(ul('sprites'), sprites.sampler_num)
-    glUniform1i(ul('sprite_map'), sprites.buffer_sampler_num)
     glUniform2f(ul('sprite_layout'), *(sprites.layout))
-    glDrawArraysInstanced(GL_TRIANGLE_FAN, 0, 4, sg.xnum * sg.ynum)
+    with cell_program.bound_vertex_array(vao_id):
+        glDrawArraysInstanced(GL_TRIANGLE_FAN, 0, 4, sg.xnum * sg.ynum)
 
 
 class CharGrid:
@@ -248,7 +137,7 @@ class CharGrid:
 
     def __init__(self, screen, opts):
         self.buffer_lock = Lock()
-        self.buffer_id = None
+        self.vao_id = None
         self.current_selection = Selection()
         self.last_rendered_selection = self.current_selection.limits(0, screen.lines, screen.columns)
         self.render_buf_is_dirty = True
@@ -276,6 +165,11 @@ class CharGrid:
             safe_print('Invalid characters in select_by_word_characters, ignoring', file=sys.stderr)
             self.word_pat = re.compile(r'[\w{}]'.format(escape(defaults.select_by_word_characters)), re.UNICODE)
 
+    def destroy(self, cell_program):
+        if self.vao_id is not None:
+            cell_program.remove_vertex_array(self.vao_id)
+            self.vao_id = None
+
     def update_position(self, window_geometry):
         self.screen_geometry = calculate_gl_geometry(window_geometry)
 
@@ -297,7 +191,7 @@ class CharGrid:
             if raw is None:
                 return 0
             val = to_color(raw)
-            return None if val is None else (color_as_int(val) << 8) | 1
+            return None if val is None else (color_as_int(val) << 8) | 2
 
         for which, val in changes.items():
             val = item(val)
@@ -322,10 +216,9 @@ class CharGrid:
         sprites = get_boss().sprites
         is_dirty = self.screen.is_dirty()
         with sprites.lock:
-            fg = self.screen.default_fg
+            fg, bg = self.screen.default_fg, self.screen.default_bg
-            fg = fg >> 8 if fg & 1 else self.default_fg
+            fg = fg >> 8 if fg & 2 else self.default_fg
-            bg = self.screen.default_bg
+            bg = bg >> 8 if bg & 2 else self.default_bg
-            bg = bg >> 8 if bg & 1 else self.default_bg
             cursor_changed, history_line_added_count = self.screen.update_cell_data(
                 sprites.backend, self.color_profile, addressof(self.main_sprite_map), fg, bg, force_full_refresh)
             if self.scrolled_by:
@@ -461,13 +354,13 @@ class CharGrid:
         s = sel or self.current_selection
         return s.text(self.screen.linebuf, self.screen.historybuf)
 
-    def prepare_for_render(self, sprites):
+    def prepare_for_render(self, cell_program):
         with self.buffer_lock:
             sg = self.render_data
             if sg is None:
                 return
-            if self.buffer_id is None:
+            if self.vao_id is None:
-                self.buffer_id = sprites.add_sprite_map()
+                self.vao_id = cell_program.create_sprite_map()
             buf = self.render_buf
             start, end = sel = self.current_selection.limits(self.scrolled_by, self.screen.lines, self.screen.columns)
             if start != end:
@@ -475,18 +368,18 @@ class CharGrid:
                 if self.render_buf_is_dirty or sel != self.last_rendered_selection:
                     memmove(buf, self.render_buf, sizeof(type(buf)))
                     fg = self.screen.highlight_fg
-                    fg = fg >> 8 if fg & 1 else self.highlight_fg
+                    fg = fg >> 8 if fg & 2 else self.highlight_fg
                     bg = self.screen.highlight_bg
-                    bg = bg >> 8 if bg & 1 else self.highlight_bg
+                    bg = bg >> 8 if bg & 2 else self.highlight_bg
                     self.screen.apply_selection(addressof(buf), start[0], start[1], end[0], end[1], fg, bg)
             if self.render_buf_is_dirty or self.last_rendered_selection != sel:
-                sprites.set_sprite_map(self.buffer_id, buf)
+                cell_program.send_vertex_data(self.vao_id, buf)
                 self.render_buf_is_dirty = False
                 self.last_rendered_selection = sel
         return sg
 
     def render_cells(self, sg, cell_program, sprites, invert_colors=False):
-        render_cells(self.buffer_id, sg, cell_program, sprites, invert_colors=invert_colors)
+        render_cells(self.vao_id, sg, cell_program, sprites, invert_colors=invert_colors)
 
     def render_cursor(self, sg, cursor_program, is_focused):
         cursor = self.current_cursor
@@ -503,7 +396,7 @@ class CharGrid:
         left = sg.xstart + cursor.x * sg.dx
         top = sg.ystart - cursor.y * sg.dy
         cc = self.screen.cursor_color
-        col = color_from_int(cc >> 8) if cc & 1 else self.opts.cursor
+        col = color_from_int(cc >> 8) if cc & 2 else self.opts.cursor
         shape = cursor.shape or self.default_cursor.shape
         alpha = self.opts.cursor_opacity
         if alpha < 1.0 and shape == CURSOR_BLOCK:
@@ -516,5 +409,6 @@ class CharGrid:
         glUniform4f(ul('color'), col[0] / 255.0, col[1] / 255.0, col[2] / 255.0, alpha)
         glUniform2f(ul('xpos'), left, right)
         glUniform2f(ul('ypos'), top, bottom)
-        glDrawArrays(GL_TRIANGLE_FAN if is_focused else GL_LINE_LOOP, 0, 4)
+        with cursor_program.bound_vertex_array(cursor_program.vao_id):
+            glDrawArrays(GL_TRIANGLE_FAN if is_focused else GL_LINE_LOOP, 0, 4)
         glDisable(GL_BLEND)

kitty/client.py

@@ -125,14 +125,14 @@ def write_osc(code, string=''):
     write(OSC + str(code) + string + '\x07')
 
 
-set_dynamic_color = write_osc
+set_dynamic_color = set_color_table_color = write_osc
 
 
 def replay(raw):
     for line in raw.splitlines():
         if line.strip():
             cmd, rest = line.partition(' ')[::2]
-            if cmd in {'draw', 'set_title', 'set_icon'}:
+            if cmd in {'draw', 'set_title', 'set_icon', 'set_dynamic_color', 'set_color_table_color'}:
                 globals()[cmd](rest)
             else:
                 rest = map(int, rest.split()) if rest else ()

kitty/cocoa_window.m

@@ -9,17 +9,150 @@
 #include "data-types.h"
 #include <Cocoa/Cocoa.h>
 
-#ifndef NSWindowStyleMaskTitled
+#include <AvailabilityMacros.h>
-#define NSWindowStyleMaskTitled NSTitledWindowMask 
+// Needed for _NSGetProgname
+#include <crt_externs.h>
+
+#if (MAC_OS_X_VERSION_MAX_ALLOWED < 101200)
+#define NSWindowStyleMaskResizable NSResizableWindowMask
 #endif
 
+@interface MenuDispatcher : NSObject
+@end
+
+@implementation MenuDispatcher
+@end
+
+static NSObject* menu_dispatcher = NULL;
+static NSMenuItem* title_menu = NULL;
+
+static NSString* 
+find_app_name(void) {
+    size_t i;
+    NSDictionary* infoDictionary = [[NSBundle mainBundle] infoDictionary];
+
+    // Keys to search for as potential application names
+    NSString* name_keys[] =
+    {
+        @"CFBundleDisplayName",
+        @"CFBundleName",
+        @"CFBundleExecutable",
+    };
+
+    for (i = 0;  i < sizeof(name_keys) / sizeof(name_keys[0]);  i++)
+    {
+        id name = [infoDictionary objectForKey:name_keys[i]];
+        if (name &&
+            [name isKindOfClass:[NSString class]] &&
+            ![name isEqualToString:@""])
+        {
+            return name;
+        }
+    }
+
+    char** progname = _NSGetProgname();
+    if (progname && *progname)
+        return [NSString stringWithUTF8String:*progname];
+
+    // Really shouldn't get here
+    return @"kitty";
+}
+
+
 PyObject*
-cocoa_hide_titlebar(PyObject UNUSED *self, PyObject *window_id) {
+cocoa_create_global_menu(PyObject UNUSED *_self) {
+    if (menu_dispatcher != NULL) { Py_RETURN_NONE; }
+    NSString* app_name = find_app_name();
+    menu_dispatcher = [[MenuDispatcher alloc] init];
+    NSMenu* bar = [[NSMenu alloc] init];
+    [NSApp setMainMenu:bar];
+
+    NSMenuItem* appMenuItem =
+        [bar addItemWithTitle:@"" action:NULL keyEquivalent:@""];
+    NSMenu* appMenu = [[NSMenu alloc] init];
+    [appMenuItem setSubmenu:appMenu];
+
+    [appMenu addItemWithTitle:[NSString stringWithFormat:@"About %@", app_name]
+                       action:@selector(orderFrontStandardAboutPanel:)
+                       keyEquivalent:@""];
+    [appMenu addItem:[NSMenuItem separatorItem]];
+    [appMenu addItemWithTitle:[NSString stringWithFormat:@"Hide %@", app_name]
+                       action:@selector(hide:)
+                keyEquivalent:@"h"];
+    [[appMenu addItemWithTitle:@"Hide Others"
+                       action:@selector(hideOtherApplications:)
+                keyEquivalent:@"h"]
+        setKeyEquivalentModifierMask:NSAlternateKeyMask | NSCommandKeyMask];
+    [appMenu addItemWithTitle:@"Show All"
+                       action:@selector(unhideAllApplications:)
+                keyEquivalent:@""];
+    [appMenu addItem:[NSMenuItem separatorItem]];
+
+    NSMenu* servicesMenu = [[NSMenu alloc] init];
+    [NSApp setServicesMenu:servicesMenu];
+    [[appMenu addItemWithTitle:@"Services"
+                       action:NULL
+                keyEquivalent:@""] setSubmenu:servicesMenu];
+    [servicesMenu release];
+
+    [appMenu addItem:[NSMenuItem separatorItem]];
+
+    [appMenu addItemWithTitle:[NSString stringWithFormat:@"Quit %@", app_name]
+                       action:@selector(terminate:)
+                       keyEquivalent:@"q"];
+    [appMenu release];
+
+    NSMenuItem* windowMenuItem =
+        [bar addItemWithTitle:@"" action:NULL keyEquivalent:@""];
+    NSMenu* windowMenu = [[NSMenu alloc] initWithTitle:@"Window"];
+    [NSApp setWindowsMenu:windowMenu];
+    [windowMenuItem setSubmenu:windowMenu];
+
+    [windowMenu addItemWithTitle:@"Minimize"
+                          action:@selector(performMiniaturize:)
+                   keyEquivalent:@"m"];
+    [windowMenu addItemWithTitle:@"Zoom"
+                          action:@selector(performZoom:)
+                   keyEquivalent:@""];
+    [windowMenu addItem:[NSMenuItem separatorItem]];
+    [windowMenu addItemWithTitle:@"Bring All to Front"
+                          action:@selector(arrangeInFront:)
+                   keyEquivalent:@""];
+
+    [windowMenu addItem:[NSMenuItem separatorItem]];
+    [[windowMenu addItemWithTitle:@"Enter Full Screen"
+                           action:@selector(toggleFullScreen:)
+                    keyEquivalent:@"f"]
+     setKeyEquivalentModifierMask:NSControlKeyMask | NSCommandKeyMask];
+    [windowMenu release];
+
+
+    [bar release];
+    Py_RETURN_NONE;
+}
+
+PyObject*
+cocoa_update_title(PyObject UNUSED *self, PyObject *pytitle) {
+    NSString *title = [[NSString alloc] initWithUTF8String:PyUnicode_AsUTF8(pytitle)];
+    NSMenu *bar = [NSApp mainMenu];
+    if (title_menu != NULL) {
+        [bar removeItem:title_menu];
+    }
+    title_menu = [bar addItemWithTitle:@"" action:NULL keyEquivalent:@""];
+    NSMenu *m = [[NSMenu alloc] initWithTitle:[NSString stringWithFormat:@" :: %@", title]];
+    [title_menu setSubmenu:m];
+    [m release];
+    [title release];
+    Py_RETURN_NONE;
+}
+
+PyObject*
+cocoa_make_window_resizable(PyObject UNUSED *self, PyObject *window_id) {
     NSWindow *window = (NSWindow*)PyLong_AsVoidPtr(window_id);
     
     @try {
         [window setStyleMask:
-            [window styleMask] & ~NSWindowStyleMaskTitled];
+            [window styleMask] | NSWindowStyleMaskResizable];
     } @catch (NSException *e) {
         return PyErr_Format(PyExc_ValueError, "Failed to set style mask: %s: %s", [[e name] UTF8String], [[e reason] UTF8String]);
     }

kitty/config.py

@@ -2,6 +2,7 @@
 # vim:fileencoding=utf-8
 # License: GPL v3 Copyright: 2016, Kovid Goyal <kovid at kovidgoyal.net>
 
+import ast
 import json
 import os
 import re
@@ -84,16 +85,22 @@ named_keys = {
 }
 
 
-def parse_key(val, keymap):
+def parse_shortcut(sc):
-    sc, action = val.partition(' ')[::2]
-    action = action.strip()
-    sc = sc.strip()
-    if not sc or not action:
-        return
     parts = sc.split('+')
     mods = parse_mods(parts[:-1])
     key = parts[-1].upper()
     key = getattr(defines, 'GLFW_KEY_' + named_keys.get(key, key), None)
+    if key is not None:
+        return mods, key
+    return None, None
+
+
+def parse_key(val, keymap):
+    sc, action = val.partition(' ')[::2]
+    sc, action = sc.strip(), action.strip()
+    if not sc or not action:
+        return
+    mods, key = parse_shortcut(sc)
     if key is None:
         safe_print(
             'Shortcut: {} has an unknown key, ignoring'.format(val),
@@ -137,6 +144,39 @@ def parse_symbol_map(val):
     return symbol_map
 
 
+def parse_send_text(val):
+    parts = val.split(' ')
+
+    def abort(msg):
+        safe_print(
+            'Send text: {} is invalid ({}), ignoring'.format(val, msg), file=sys.stderr
+        )
+        return {}
+
+    if len(parts) < 3:
+        return abort('Incomplete')
+
+    text = ' '.join(parts[2:])
+    mode, sc = parts[:2]
+    mods, key = parse_shortcut(sc.strip())
+    if key is None:
+        return abort('Invalid shortcut')
+    text = ast.literal_eval("'''" + text + "'''").encode('utf-8')
+    if not text:
+        return abort('Empty text')
+
+    if mode in ('all', '*'):
+        modes = parse_send_text.all_modes
+    else:
+        modes = frozenset(mode.split(',')).intersection(parse_send_text.all_modes)
+        if not modes:
+            return abort('Invalid keyboard modes')
+    return {mode: {(mods, key): text} for mode in modes}
+
+
+parse_send_text.all_modes = frozenset({'normal', 'application', 'kitty'})
+
+
 def to_open_url_modifiers(val):
     return parse_mods(val.split('+'))
 
@@ -198,8 +238,10 @@ for a in ('active', 'inactive'):
         type_map['%s_tab_%s' % (a, b)] = lambda x: to_color(x, validate=True)
 
 
-def parse_config(lines):
+def parse_config(lines, check_keys=True):
-    ans = {'keymap': {}, 'symbol_map': {}}
+    ans = {'keymap': {}, 'symbol_map': {}, 'send_text_map': {'kitty': {}, 'normal': {}, 'application': {}}}
+    if check_keys:
+        all_keys = defaults._asdict()
     for line in lines:
         line = line.strip()
         if not line or line.startswith('#'):
@@ -213,6 +255,15 @@ def parse_config(lines):
             if key == 'symbol_map':
                 ans['symbol_map'].update(parse_symbol_map(val))
                 continue
+            if key == 'send_text':
+                stvals = parse_send_text(val)
+                for k, v in ans['send_text_map'].items():
+                    v.update(stvals.get(k, {}))
+                continue
+            if check_keys:
+                if key not in all_keys:
+                    safe_print('Ignoring unknown config key: {}'.format(key), file=sys.stderr)
+                    continue
             tm = type_map.get(key)
             if tm is not None:
                 val = tm(val)
@@ -223,38 +274,42 @@ def parse_config(lines):
 with open(
     os.path.join(os.path.dirname(os.path.abspath(__file__)), 'kitty.conf')
 ) as f:
-    defaults = parse_config(f.readlines())
+    defaults = parse_config(f.readlines(), check_keys=False)
 Options = namedtuple('Defaults', ','.join(defaults.keys()))
 defaults = Options(**defaults)
 actions = frozenset(defaults.keymap.values())
 
 
-def update_dict(a, b):
+def merge_keymaps(defaults, newvals):
-    a.update(b)
+    ans = defaults.copy()
-    return a
+    for k, v in newvals.items():
+        if v in {'noop', 'no-op', 'no_op'}:
+            ans.pop(k, None)
+            continue
+        if v in actions:
+            ans[k] = v
+    return ans
 
 
-def merge_dicts(vals, defaults):
+def merge_dicts(defaults, newvals):
-    return {
+    ans = defaults.copy()
-        k: update_dict(v, vals.get(k, {}))
+    ans.update(newvals)
-        if isinstance(v, dict) else vals.get(k, v)
+    return ans
-        for k, v in defaults.items()
-    }
 
 
-def merge_configs(ans, vals):
+def merge_configs(defaults, vals):
-    vals['keymap'] = {
+    ans = {}
-        k: v
+    for k, v in defaults.items():
-        for k, v in vals.get('keymap', {}).items() if v in actions
+        if isinstance(v, dict):
-    }
+            newvals = vals.get(k, {})
-    remove_keys = {
+            if k == 'keymap':
-        k
+                ans['keymap'] = merge_keymaps(v, newvals)
-        for k, v in vals.get('keymap', {}).items()
+            elif k == 'send_text_map':
-        if v in ('noop', 'no-op', 'no_op')
+                ans[k] = {m: merge_dicts(mm, newvals.get(m, {})) for m, mm in v.items()}
-    }
+            else:
-    ans = merge_dicts(vals, ans)
+                ans[k] = merge_dicts(v, newvals)
-    for k in remove_keys:
+        else:
-        ans['keymap'].pop(k, None)
+            ans[k] = vals.get(k, v)
     return ans
 
 

kitty/constants.py

@@ -15,7 +15,7 @@ from .fast_data_types import (
     GLFW_KEY_LEFT_SUPER, GLFW_KEY_RIGHT_SUPER)
 
 appname = 'kitty'
-version = (0, 2, 7)
+version = (0, 3, 0)
 str_version = '.'.join(map(str, version))
 _plat = sys.platform.lower()
 isosx = 'darwin' in _plat

kitty/cursor_fragment.glsl

@@ -0,0 +1,6 @@
+uniform vec4 color;
+out vec4 final_color;
+
+void main() {
+    final_color = color;
+}

kitty/cursor_vertex.glsl

@@ -0,0 +1,16 @@
+uniform vec2 xpos;
+uniform vec2 ypos;
+
+const uvec2 pos_map[] = uvec2[4](
+    uvec2(1, 0),  // right, top
+    uvec2(1, 1),  // right, bottom
+    uvec2(0, 1),  // left, bottom
+    uvec2(0, 0)   // left, top
+);
+
+void main() {
+    uvec2 pos = pos_map[gl_VertexID];
+    gl_Position = vec4(xpos[pos[0]], ypos[pos[1]], 0, 1);
+}
+
+

kitty/data-types.c

@@ -31,6 +31,17 @@ change_wcwidth_wrap(PyObject UNUSED *self, PyObject *use9) {
     Py_RETURN_NONE;
 }
 
+static PyObject*
+redirect_std_streams(PyObject UNUSED *self, PyObject *args) {
+    char *devnull = NULL;
+    if (!PyArg_ParseTuple(args, "s", &devnull)) return NULL;
+    if (freopen(devnull, "r", stdin) == NULL) return PyErr_SetFromErrno(PyExc_EnvironmentError);
+    if (freopen(devnull, "w", stdout) == NULL) return PyErr_SetFromErrno(PyExc_EnvironmentError);
+    if (freopen(devnull, "w", stderr) == NULL)  return PyErr_SetFromErrno(PyExc_EnvironmentError);
+    Py_RETURN_NONE;
+}
+
+
 static PyMethodDef module_methods[] = {
     GL_METHODS
     {"drain_read", (PyCFunction)drain_read, METH_O, ""},
@@ -38,6 +49,7 @@ static PyMethodDef module_methods[] = {
     {"parse_bytes_dump", (PyCFunction)parse_bytes_dump, METH_VARARGS, ""},
     {"read_bytes", (PyCFunction)read_bytes, METH_VARARGS, ""},
     {"read_bytes_dump", (PyCFunction)read_bytes_dump, METH_VARARGS, ""},
+    {"redirect_std_streams", (PyCFunction)redirect_std_streams, METH_VARARGS, ""},
     {"wcwidth", (PyCFunction)wcwidth_wrap, METH_O, ""},
     {"change_wcwidth", (PyCFunction)change_wcwidth_wrap, METH_O, ""},
 #ifndef __APPLE__

kitty/data-types.h

@@ -35,8 +35,7 @@ typedef unsigned int index_type;
 
 #define CELL_FIELD_COUNT 5
 #define CELL_SIZE (CELL_FIELD_COUNT * 4)
-// The data cell size must be a multiple of 3
+#define DATA_CELL_SIZE 6
-#define DATA_CELL_SIZE 2 * 3
 
 #define CHAR_MASK 0xFFFFFF
 #define ATTRS_SHIFT 24

kitty/gl.h

@@ -84,6 +84,16 @@ Uniform2ui(PyObject UNUSED *self, PyObject *args) {
     Py_RETURN_NONE;
 }
 
+static PyObject* 
+Uniform2i(PyObject UNUSED *self, PyObject *args) {
+    int location;
+    int x, y;
+    if (!PyArg_ParseTuple(args, "iii", &location, &x, &y)) return NULL;
+    glUniform2i(location, x, y);
+    CHECK_ERROR;
+    Py_RETURN_NONE;
+}
+
 static PyObject* 
 Uniform1i(PyObject UNUSED *self, PyObject *args) {
     int location;
@@ -147,7 +157,6 @@ _glewInit(PyObject UNUSED *self) {
         return NULL; \
     }
     ARB_TEST(texture_storage);
-    ARB_TEST(texture_buffer_object_rgb32);
 #undef ARB_TEST
 #endif
     Py_RETURN_NONE;
@@ -528,29 +537,37 @@ GetTexImage(PyObject UNUSED *self, PyObject *args) {
 }
 
 static PyObject* 
-NamedBufferData(PyObject UNUSED *self, PyObject *args) {
+GetBufferSubData(PyObject UNUSED *self, PyObject *args) {
-    int usage;
+    int buftype;
-    unsigned long size, target;
+    unsigned long size, target, offset;
     PyObject *address;
-    if (!PyArg_ParseTuple(args, "kkO!i", &target, &size, &PyLong_Type, &address, &usage)) return NULL;
+    if (!PyArg_ParseTuple(args, "ikkkO!", &buftype, &target, &size, &offset, &PyLong_Type, &address)) return NULL;
     void *data = PyLong_AsVoidPtr(address);
     if (data == NULL) { PyErr_SetString(PyExc_TypeError, "Not a valid data pointer"); return NULL; }
+    glBindBuffer(buftype, target); 
     Py_BEGIN_ALLOW_THREADS;
-#ifdef glNamedBufferData
+    glGetBufferSubData(buftype, offset, size, data);
-#ifdef __APPLE__
-    if(false) {
-#else
-    if(GLEW_VERSION_4_5) {
-#endif
-        glNamedBufferData(target, size, data, usage);
-    } else {
-        glBindBuffer(GL_TEXTURE_BUFFER, target); glBufferData(GL_TEXTURE_BUFFER, size, data, usage); glBindBuffer(GL_TEXTURE_BUFFER, 0);
-    }
-#else
-        glBindBuffer(GL_TEXTURE_BUFFER, target); glBufferData(GL_TEXTURE_BUFFER, size, data, usage); glBindBuffer(GL_TEXTURE_BUFFER, 0);
-#endif
     Py_END_ALLOW_THREADS;
     CHECK_ERROR;
+    glBindBuffer(buftype, 0);
+    Py_RETURN_NONE;
+}
+
+static PyObject* 
+replace_or_create_buffer(PyObject UNUSED *self, PyObject *args) {
+    int usage, buftype;
+    unsigned long size, prev_sz, target;
+    PyObject *address;
+    if (!PyArg_ParseTuple(args, "kkkO!ii", &target, &size, &prev_sz, &PyLong_Type, &address, &usage, &buftype)) return NULL;
+    void *data = PyLong_AsVoidPtr(address);
+    if (data == NULL) { PyErr_SetString(PyExc_TypeError, "Not a valid data pointer"); return NULL; }
+    glBindBuffer(buftype, target); 
+    Py_BEGIN_ALLOW_THREADS;
+    if (prev_sz == 0 || prev_sz != size) glBufferData(buftype, size, data, usage); 
+    else glBufferSubData(buftype, 0, size, data);
+    Py_END_ALLOW_THREADS;
+    CHECK_ERROR;
+    glBindBuffer(buftype, 0);
     Py_RETURN_NONE;
 }
 
@@ -606,6 +623,14 @@ DeleteBuffer(PyObject UNUSED *self, PyObject *val) {
     Py_RETURN_NONE;
 }
  
+static PyObject* 
+DeleteVertexArray(PyObject UNUSED *self, PyObject *val) {
+    GLuint tex_id = (GLuint)PyLong_AsUnsignedLong(val);
+    glDeleteVertexArrays(1, &tex_id);
+    CHECK_ERROR;
+    Py_RETURN_NONE;
+}
+ 
 static PyObject* 
 BlendFunc(PyObject UNUSED *self, PyObject *args) {
     int s, d;
@@ -641,17 +666,70 @@ EnableVertexAttribArray(PyObject UNUSED *self, PyObject *val) {
 
 static PyObject* 
 VertexAttribPointer(PyObject UNUSED *self, PyObject *args) {
-    unsigned int index, stride;
+    unsigned int index;
-    int type=GL_FLOAT, normalized, size;
+    int type, normalized, size, stride;
-    void *offset;
+    unsigned long offset;
-    PyObject *l;
+    if (!PyArg_ParseTuple(args, "Iiipik", &index, &size, &type, &normalized, &stride, &offset)) return NULL;
-    if (!PyArg_ParseTuple(args, "IiipIO!", &index, &size, &type, &normalized, &stride, &PyLong_Type, &l)) return NULL;
+    switch(type) {
-    offset = PyLong_AsVoidPtr(l);
+        case GL_BYTE:
-    glVertexAttribPointer(index, size, type, normalized, stride, offset);
+        case GL_UNSIGNED_BYTE:
+        case GL_SHORT:
+        case GL_UNSIGNED_SHORT:
+        case GL_INT:
+        case GL_UNSIGNED_INT:
+            glVertexAttribIPointer(index, size, type, stride, (GLvoid*)offset);
+            break;
+        default:
+            glVertexAttribPointer(index, size, type, normalized ? GL_TRUE : GL_FALSE, stride, (GLvoid*)offset);
+            break;
+    }
     CHECK_ERROR;
     Py_RETURN_NONE;
 }
 
+static PyObject* 
+VertexAttribDivisor(PyObject UNUSED *self, PyObject *args) {
+    unsigned int index, divisor;
+    if (!PyArg_ParseTuple(args, "II", &index, &divisor)) return NULL;
+    glVertexAttribDivisor(index, divisor);
+    CHECK_ERROR;
+    Py_RETURN_NONE;
+}
+
+static PyObject* 
+Flush(PyObject UNUSED *self) {
+    glFinish();
+    Py_RETURN_NONE;
+}
+
+static PyObject* 
+Finish(PyObject UNUSED *self) {
+    glFinish();
+    Py_RETURN_NONE;
+}
+
+static PyObject*
+check_for_extensions(PyObject UNUSED *self) {
+    GLint n = 0, i, left = 2;
+    glGetIntegerv(GL_NUM_EXTENSIONS, &n);
+    bool texture_storage = false;
+#define CHECK(name) if (!name) { \
+    if (strstr((const char*)ext, "GL_ARB_" #name) == (const char *)ext) { left--; name = true; } \
+}
+    for (i = 0; i < n; i++) {
+        const GLubyte *ext = glGetStringi(GL_EXTENSIONS, i);
+        CHECK(texture_storage); 
+        if (left < 1) break;
+    }
+#undef CHECK
+    if (left > 0) {
+#define CHECK(name) if (!name) { PyErr_Format(PyExc_RuntimeError, "The OpenGL driver on this system is missing the required extension: GL_ARB_%s", #name); return NULL; }
+        CHECK(texture_storage); 
+#undef CHECK
+    }
+    Py_RETURN_NONE;
+}
+
 int add_module_gl_constants(PyObject *module) {
 #define GLC(x) if (PyModule_AddIntConstant(module, #x, x) != 0) { PyErr_NoMemory(); return 0; }
     GLC(GL_VERSION);
@@ -667,17 +745,17 @@ int add_module_gl_constants(PyObject *module) {
     GLC(GL_COMPILE_STATUS);
     GLC(GL_LINK_STATUS);
     GLC(GL_TEXTURE0); GLC(GL_TEXTURE1); GLC(GL_TEXTURE2); GLC(GL_TEXTURE3); GLC(GL_TEXTURE4); GLC(GL_TEXTURE5); GLC(GL_TEXTURE6); GLC(GL_TEXTURE7); GLC(GL_TEXTURE8);
-    GLC(GL_MAX_ARRAY_TEXTURE_LAYERS); 
+    GLC(GL_MAX_ARRAY_TEXTURE_LAYERS); GLC(GL_TEXTURE_BINDING_BUFFER); GLC(GL_MAX_TEXTURE_BUFFER_SIZE);
     GLC(GL_MAX_TEXTURE_SIZE);
     GLC(GL_TEXTURE_2D_ARRAY);
     GLC(GL_LINEAR); GLC(GL_CLAMP_TO_EDGE); GLC(GL_NEAREST);
     GLC(GL_TEXTURE_MIN_FILTER); GLC(GL_TEXTURE_MAG_FILTER);
     GLC(GL_TEXTURE_WRAP_S); GLC(GL_TEXTURE_WRAP_T);
     GLC(GL_UNPACK_ALIGNMENT);
-    GLC(GL_R8); GLC(GL_RED); GLC(GL_UNSIGNED_BYTE); GLC(GL_RGB32UI); GLC(GL_RGBA);
+    GLC(GL_R8); GLC(GL_RED); GLC(GL_UNSIGNED_BYTE); GLC(GL_R32UI); GLC(GL_RGB32UI); GLC(GL_RGBA);
     GLC(GL_TEXTURE_BUFFER); GLC(GL_STATIC_DRAW); GLC(GL_STREAM_DRAW);
     GLC(GL_SRC_ALPHA); GLC(GL_ONE_MINUS_SRC_ALPHA);
-    GLC(GL_BLEND); GLC(GL_FLOAT); GLC(GL_ARRAY_BUFFER);
+    GLC(GL_BLEND); GLC(GL_FLOAT); GLC(GL_UNSIGNED_INT); GLC(GL_ARRAY_BUFFER);
     return 1;
 }
 
@@ -685,13 +763,16 @@ int add_module_gl_constants(PyObject *module) {
 #define GL_METHODS \
     {"enable_automatic_opengl_error_checking", (PyCFunction)enable_automatic_error_checking, METH_O, NULL}, \
     {"copy_image_sub_data", (PyCFunction)copy_image_sub_data, METH_VARARGS, NULL}, \
+    {"replace_or_create_buffer", (PyCFunction)replace_or_create_buffer, METH_VARARGS, NULL}, \
     {"glewInit", (PyCFunction)_glewInit, METH_NOARGS, NULL}, \
+    {"check_for_extensions", (PyCFunction)check_for_extensions, METH_NOARGS, NULL}, \
     METH(Viewport, METH_VARARGS) \
     METH(CheckError, METH_NOARGS) \
     METH(ClearColor, METH_VARARGS) \
     METH(GetProgramiv, METH_VARARGS) \
     METH(GetShaderiv, METH_VARARGS) \
     METH(Uniform2ui, METH_VARARGS) \
+    METH(Uniform2i, METH_VARARGS) \
     METH(Uniform1i, METH_VARARGS) \
     METH(Uniform2f, METH_VARARGS) \
     METH(Uniform4f, METH_VARARGS) \
@@ -702,6 +783,7 @@ int add_module_gl_constants(PyObject *module) {
     METH(CompileShader, METH_O) \
     METH(DeleteTexture, METH_O) \
     METH(DeleteBuffer, METH_O) \
+    METH(DeleteVertexArray, METH_O) \
     METH(GetString, METH_O) \
     METH(GetIntegerv, METH_O) \
     METH(Clear, METH_O) \
@@ -718,6 +800,7 @@ int add_module_gl_constants(PyObject *module) {
     METH(Disable, METH_O) \
     METH(EnableVertexAttribArray, METH_O) \
     METH(VertexAttribPointer, METH_VARARGS) \
+    METH(VertexAttribDivisor, METH_VARARGS) \
     METH(GetProgramInfoLog, METH_O) \
     METH(GetShaderInfoLog, METH_O) \
     METH(ActiveTexture, METH_O) \
@@ -735,6 +818,8 @@ int add_module_gl_constants(PyObject *module) {
     METH(CopyImageSubData, METH_VARARGS) \
     METH(TexSubImage3D, METH_VARARGS) \
     METH(GetTexImage, METH_VARARGS) \
-    METH(NamedBufferData, METH_VARARGS) \
+    METH(GetBufferSubData, METH_VARARGS) \
     METH(BlendFunc, METH_VARARGS) \
+    METH(Finish, METH_NOARGS) \
+    METH(Flush, METH_NOARGS) \
 

kitty/glfw.c

@@ -208,6 +208,18 @@ glfw_get_key_name(PyObject UNUSED *self, PyObject *args) {
     return Py_BuildValue("s", glfwGetKeyName(key, scancode));
 }
 
+PyObject*
+glfw_init_hint_string(PyObject UNUSED *self, PyObject *args) {
+    int hint_id;
+    char *hint;
+    if (!PyArg_ParseTuple(args, "is", &hint_id, &hint)) return NULL;
+#ifdef glfwInitHintString
+    glfwInitHintString(hint_id, hint);
+#endif
+    Py_RETURN_NONE;
+}
+
+
 // }}}
 
 static void
@@ -448,6 +460,10 @@ init_glfw(PyObject *m) {
     PyEval_InitThreads();
     glfwSetErrorCallback(cb_error_callback);
 #define ADDC(n) if(PyModule_AddIntConstant(m, #n, n) != 0) return false;
+#ifdef GLFW_X11_WM_CLASS_NAME
+    ADDC(GLFW_X11_WM_CLASS_NAME)
+    ADDC(GLFW_X11_WM_CLASS_CLASS)
+#endif
     ADDC(GLFW_RELEASE);
     ADDC(GLFW_PRESS);
     ADDC(GLFW_REPEAT);

kitty/glfw.h

@@ -17,15 +17,20 @@ PyObject* glfw_wait_events(PyObject UNUSED *self, PyObject*);
 PyObject* glfw_post_empty_event(PyObject UNUSED *self);
 PyObject* glfw_get_physical_dpi(PyObject UNUSED *self);
 PyObject* glfw_get_key_name(PyObject UNUSED *self, PyObject *args);
+PyObject* glfw_init_hint_string(PyObject UNUSED *self, PyObject *args);
 
 #ifdef __APPLE__
-PyObject* cocoa_hide_titlebar(PyObject UNUSED *self, PyObject *window_id);
 PyObject* cocoa_get_lang(PyObject UNUSED *self);
-#define COCOA_HIDE_TITLEBAR {"cocoa_hide_titlebar", (PyCFunction)cocoa_hide_titlebar, METH_O, ""}, 
+PyObject* cocoa_make_window_resizable(PyObject UNUSED *self, PyObject *window_id);
-#define COCOA_GET_LANG {"cocoa_get_lang", (PyCFunction)cocoa_get_lang, METH_NOARGS, ""}, 
+PyObject* cocoa_create_global_menu(PyObject UNUSED *self);
+PyObject* cocoa_update_title(PyObject UNUSED *self, PyObject *title);
+#define COCOA_FUNCS \
+ {"cocoa_get_lang", (PyCFunction)cocoa_get_lang, METH_NOARGS, ""}, \
+ {"cocoa_make_window_resizable", (PyCFunction)cocoa_make_window_resizable, METH_O, ""}, \
+ {"cocoa_create_global_menu", (PyCFunction)cocoa_create_global_menu, METH_NOARGS, ""}, \
+ {"cocoa_update_title", (PyCFunction)cocoa_update_title, METH_O, ""},
 #else
-#define COCOA_HIDE_TITLEBAR
+#define COCOA_FUNCS
-#define COCOA_GET_LANG
 #endif
 
 #define GLFW_FUNC_WRAPPERS \
@@ -38,6 +43,5 @@ PyObject* cocoa_get_lang(PyObject UNUSED *self);
     {"glfw_post_empty_event", (PyCFunction)glfw_post_empty_event, METH_NOARGS, ""}, \
     {"glfw_get_physical_dpi", (PyCFunction)glfw_get_physical_dpi, METH_NOARGS, ""}, \
     {"glfw_get_key_name", (PyCFunction)glfw_get_key_name, METH_VARARGS, ""}, \
-    COCOA_HIDE_TITLEBAR \
+    {"glfw_init_hint_string", (PyCFunction)glfw_init_hint_string, METH_VARARGS, ""}, \
-    COCOA_GET_LANG
+    COCOA_FUNCS 
-

kitty/keys.py

@@ -105,6 +105,12 @@ def get_key_map(screen):
     return cursor_key_mode_map[screen.cursor_key_mode]
 
 
+def keyboard_mode_name(screen):
+    if screen.extended_keyboard:
+        return 'kitty'
+    return 'application' if screen.cursor_key_mode else 'normal'
+
+
 valid_localized_key_names = {
     k: getattr(defines, 'GLFW_KEY_' + k)
     for k in 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
@@ -195,3 +201,11 @@ def interpret_text_event(codepoint, mods, window):
 def get_shortcut(keymap, mods, key, scancode):
     key = get_localized_key(key, scancode)
     return keymap.get((mods & 0b1111, key))
+
+
+def get_sent_data(send_text_map, key, scancode, mods, window, action):
+    if action in (defines.GLFW_PRESS, defines.GLFW_REPEAT):
+        key = get_localized_key(key, scancode)
+        m = keyboard_mode_name(window.screen)
+        keymap = send_text_map[m]
+        return keymap.get((mods & 0b1111, key))

kitty/kitty.conf

@@ -231,6 +231,23 @@ map ctrl+shift+equal    increase_font_size
 map ctrl+shift+minus    decrease_font_size
 map ctrl+shift+backspace restore_font_size
 
+# Sending arbitrary text on shortcut key presses
+# You can tell kitty to send arbitrary (UTF-8) encoded text to
+# the client program when pressing specified shortcut keys. For example:
+# send_text all ctrl+alt+a Special text
+# This will send "Special text" when you press the Ctrl+Alt+a key combination.
+# The text to be sent is a python string literal so you can use escapes like
+# \x1b to send control codes or \u21fb to send unicode characters (or you can
+# just input the unicode characters directly as UTF-8 text). The first argument
+# to send_text is the keyboard modes in which to activate the shortcut. The possible
+# values are normal or application or kitty or a comma separated combination of them.
+# The special keyword all means all modes. The modes normal and application refer to
+# the DECCKM cursor key mode for terminals, and kitty refers to the special kitty
+# extended keyboard protocol. Another example, that outputs a word and then moves the cursor
+# to the start of the line (same as pressing the Home key):
+# send_text normal ctrl+alt+a Word\x1b[H
+# send_text application ctrl+alt+a Word\x1bOH
+
 # Symbol mapping (special font for specified unicode code points). Map the
 # specified unicode codepoints to a particular font. Useful if you need special
 # rendering for some symbols, such as for Powerline. Avoids the need for

kitty/main.py

@@ -8,7 +8,6 @@ import os
 import sys
 import tempfile
 from gettext import gettext as _
-
 from queue import Empty
 
 from .boss import Boss
@@ -20,16 +19,21 @@ from .constants import (
 )
 from .fast_data_types import (
     GL_COLOR_BUFFER_BIT, GLFW_CONTEXT_VERSION_MAJOR,
-    GLFW_CONTEXT_VERSION_MINOR, GLFW_OPENGL_CORE_PROFILE,
+    GLFW_CONTEXT_VERSION_MINOR, GLFW_DECORATED, GLFW_OPENGL_CORE_PROFILE,
     GLFW_OPENGL_FORWARD_COMPAT, GLFW_OPENGL_PROFILE, GLFW_SAMPLES,
-    GLFW_STENCIL_BITS, Window, change_wcwidth,
+    GLFW_STENCIL_BITS, Window, change_wcwidth, check_for_extensions,
     enable_automatic_opengl_error_checking, glClear, glClearColor, glewInit,
-    glfw_init, glfw_set_error_callback, glfw_swap_interval, glfw_terminate,
+    glfw_init, glfw_init_hint_string, glfw_set_error_callback,
-    glfw_wait_events, glfw_window_hint
+    glfw_swap_interval, glfw_terminate, glfw_wait_events, glfw_window_hint
 )
 from .layout import all_layouts
 from .shaders import GL_VERSION
-from .utils import safe_print
+from .utils import detach, safe_print
+
+try:
+    from .fast_data_types import GLFW_X11_WM_CLASS_NAME, GLFW_X11_WM_CLASS_CLASS
+except ImportError:
+    GLFW_X11_WM_CLASS_NAME = GLFW_X11_WM_CLASS_CLASS = None
 
 
 defconf = os.path.join(config_dir, 'kitty.conf')
@@ -95,6 +99,13 @@ def option_parser():
         default=False,
         help=_('Output commands received from child process to stdout')
     )
+    if not isosx:
+        a(
+            '--detach',
+            action='store_true',
+            default=False,
+            help=_('Detach from the controlling terminal, if any')
+        )
     a(
         '--replay-commands',
         default=None,
@@ -137,7 +148,9 @@ def option_parser():
     return parser
 
 
-def setup_opengl():
+def setup_opengl(opts):
+    if opts.macos_hide_titlebar:
+        glfw_window_hint(GLFW_DECORATED, False)
     glfw_window_hint(GLFW_CONTEXT_VERSION_MAJOR, GL_VERSION[0])
     glfw_window_hint(GLFW_CONTEXT_VERSION_MINOR, GL_VERSION[1])
     glfw_window_hint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE)
@@ -175,7 +188,7 @@ def dispatch_pending_calls(boss):
 
 
 def run_app(opts, args):
-    setup_opengl()
+    setup_opengl(opts)
     load_cached_values()
     if 'window-size' in cached_values and opts.remember_window_size:
         ws = cached_values['window-size']
@@ -188,13 +201,21 @@ def run_app(opts, args):
     else:
         viewport_size.width = opts.initial_window_width
         viewport_size.height = opts.initial_window_height
-    window = Window(viewport_size.width, viewport_size.height, args.cls)
+    try:
+        window = Window(viewport_size.width, viewport_size.height, args.cls)
+    except ValueError:
+        safe_print('Failed to create GLFW window with initial size:', viewport_size)
+        viewport_size.width = 640
+        viewport_size.height = 400
+        window = Window(viewport_size.width, viewport_size.height, args.cls)
     window.set_title(appname)
     window.make_context_current()
     if isosx:
+        from .fast_data_types import cocoa_make_window_resizable, cocoa_create_global_menu
+        check_for_extensions()
+        cocoa_create_global_menu()
         if opts.macos_hide_titlebar:
-            from .fast_data_types import cocoa_hide_titlebar
+            cocoa_make_window_resizable(window.cocoa_window_id())
-            cocoa_hide_titlebar(window.cocoa_window_id())
     else:
         with open(logo_data_file, 'rb') as f:
             window.set_icon(f.read(), 256, 256)
@@ -241,11 +262,25 @@ def ensure_osx_locale():
 def main():
     if isosx:
         ensure_osx_locale()
-    locale.setlocale(locale.LC_ALL, '')
+    try:
+        locale.setlocale(locale.LC_ALL, '')
+    except Exception:
+        if not isosx:
+            raise
+        print('Failed to set locale with LANG:', os.environ.get('LANG'), file=sys.stderr)
+        os.environ.pop('LANG')
+        try:
+            locale.setlocale(locale.LC_ALL, '')
+        except Exception:
+            print('Failed to set locale with no LANG, ignoring', file=sys.stderr)
     if os.environ.pop('KITTY_LAUNCHED_BY_LAUNCH_SERVICES',
                       None) == '1' and getattr(sys, 'frozen', True):
         os.chdir(os.path.expanduser('~'))
+    if not os.path.isdir(os.getcwd()):
+        os.chdir(os.path.expanduser('~'))
     args = option_parser().parse_args()
+    if getattr(args, 'detach', False):
+        detach()
     if args.cmd:
         exec(args.cmd)
         return
@@ -259,6 +294,8 @@ def main():
     change_wcwidth(not opts.use_system_wcwidth)
     glfw_set_error_callback(on_glfw_error)
     enable_automatic_opengl_error_checking(args.debug_gl)
+    if GLFW_X11_WM_CLASS_CLASS is not None:
+        glfw_init_hint_string(GLFW_X11_WM_CLASS_CLASS, opts.cls)
     if not glfw_init():
         raise SystemExit('GLFW initialization failed')
     try:

kitty/mouse.py

@@ -58,5 +58,5 @@ def encode_mouse_event(tracking_mode, tracking_protocol, button, action, mods, x
         ans = bytes(ans)
     else:
         if x <= 223 and y <= 223:
-            ans = bytearray([0o33, ord('['), cb + 32, x + 32, y + 32])
+            ans = bytearray([0o33, ord('['), ord('M'), cb + 32, x + 32, y + 32])
     return ans

kitty/screen.c

@@ -7,6 +7,7 @@
 
 #include "data-types.h"
 #include <structmember.h>
+#include <limits.h>
 #include "unicode-data.h"
 #include "tracker.h"
 #include "modes.h"
@@ -1332,6 +1333,14 @@ static PyGetSetDef getsetters[] = {
     {NULL}  /* Sentinel */
 };
 
+#if UINT_MAX == UINT32_MAX
+#define T_COL T_UINT
+#elif ULONG_MAX == UINT32_MAX
+#define T_COL T_ULONG
+#else
+#error Neither int nor long is 4-bytes in size
+#endif
+
 static PyMemberDef members[] = {
     {"callbacks", T_OBJECT_EX, offsetof(Screen, callbacks), 0, "callbacks"},
     {"cursor", T_OBJECT_EX, offsetof(Screen, cursor), READONLY, "cursor"},
@@ -1341,11 +1350,11 @@ static PyMemberDef members[] = {
     {"columns", T_UINT, offsetof(Screen, columns), READONLY, "columns"},
     {"margin_top", T_UINT, offsetof(Screen, margin_top), READONLY, "margin_top"},
     {"margin_bottom", T_UINT, offsetof(Screen, margin_bottom), READONLY, "margin_bottom"},
-    {"default_fg", T_ULONG, offsetof(Screen, default_fg), 0, "default_fg"},
+    {"default_fg", T_COL, offsetof(Screen, default_fg), 0, "default_fg"},
-    {"default_bg", T_ULONG, offsetof(Screen, default_bg), 0, "default_bg"},
+    {"default_bg", T_COL, offsetof(Screen, default_bg), 0, "default_bg"},
-    {"highlight_fg", T_ULONG, offsetof(Screen, highlight_fg), 0, "highlight_fg"},
+    {"highlight_fg", T_COL, offsetof(Screen, highlight_fg), 0, "highlight_fg"},
-    {"highlight_bg", T_ULONG, offsetof(Screen, highlight_bg), 0, "highlight_bg"},
+    {"highlight_bg", T_COL, offsetof(Screen, highlight_bg), 0, "highlight_bg"},
-    {"cursor_color", T_ULONG, offsetof(Screen, cursor_color), 0, "cursor_color"},
+    {"cursor_color", T_COL, offsetof(Screen, cursor_color), 0, "cursor_color"},
     {NULL}
 };
  

kitty/shaders.py

@@ -2,39 +2,106 @@
 # vim:fileencoding=utf-8
 # License: GPL v3 Copyright: 2016, Kovid Goyal <kovid at kovidgoyal.net>
 
+import os
 import sys
+from collections import namedtuple
+from contextlib import contextmanager
 from ctypes import addressof, sizeof
 from functools import lru_cache
 from threading import Lock
 
-from .fonts.render import render_cell
 from .fast_data_types import (
-    glCreateProgram, glAttachShader, GL_FRAGMENT_SHADER, GL_VERTEX_SHADER,
+    BOLD, GL_ARRAY_BUFFER, GL_CLAMP_TO_EDGE, GL_COMPILE_STATUS, GL_FLOAT,
-    glLinkProgram, GL_TRUE, GL_LINK_STATUS, glGetProgramiv,
+    GL_FRAGMENT_SHADER, GL_LINK_STATUS, GL_MAX_ARRAY_TEXTURE_LAYERS,
-    glGetProgramInfoLog, glDeleteShader, glDeleteProgram, glGenVertexArrays,
+    GL_MAX_TEXTURE_SIZE, GL_NEAREST, GL_R8, GL_RED, GL_STREAM_DRAW,
-    glCreateShader, glShaderSource, glCompileShader, glGetShaderiv,
+    GL_TEXTURE0, GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MAG_FILTER,
-    GL_COMPILE_STATUS, glGetShaderInfoLog, glGetUniformLocation,
+    GL_TEXTURE_MIN_FILTER, GL_TEXTURE_WRAP_S, GL_TEXTURE_WRAP_T, GL_TRUE,
-    glGetAttribLocation, glUseProgram, glBindVertexArray, GL_TEXTURE0,
+    GL_UNPACK_ALIGNMENT, GL_UNSIGNED_BYTE, GL_VERTEX_SHADER, ITALIC, SpriteMap,
-    GL_TEXTURE1, glGetIntegerv, GL_MAX_ARRAY_TEXTURE_LAYERS, glNamedBufferData,
+    copy_image_sub_data, glActiveTexture, glAttachShader, glBindBuffer,
-    GL_MAX_TEXTURE_SIZE, glDeleteTexture, GL_TEXTURE_2D_ARRAY, glGenTextures,
+    glBindTexture, glBindVertexArray, glCompileShader, glCopyImageSubData,
-    glBindTexture, glTexParameteri, GL_CLAMP_TO_EDGE, glDeleteBuffer,
+    glCreateProgram, glCreateShader, glDeleteBuffer, glDeleteProgram,
-    GL_TEXTURE_MAG_FILTER, GL_TEXTURE_MIN_FILTER, GL_TEXTURE_WRAP_S,
+    glDeleteShader, glDeleteTexture, glDeleteVertexArray,
-    GL_NEAREST, GL_TEXTURE_WRAP_T, glGenBuffers, GL_R8, GL_RED,
+    glEnableVertexAttribArray, glGenBuffers, glGenTextures, glGenVertexArrays,
-    GL_UNPACK_ALIGNMENT, GL_UNSIGNED_BYTE, GL_STATIC_DRAW, GL_STREAM_DRAW,
+    glGetAttribLocation, glGetBufferSubData, glGetIntegerv,
-    GL_TEXTURE_BUFFER, GL_RGB32UI, GL_FLOAT, GL_ARRAY_BUFFER, glBindBuffer,
+    glGetProgramInfoLog, glGetProgramiv, glGetShaderInfoLog, glGetShaderiv,
-    glPixelStorei, glTexBuffer, glActiveTexture, glTexStorage3D,
+    glGetUniformLocation, glLinkProgram, glPixelStorei, glShaderSource,
-    glCopyImageSubData, glTexSubImage3D, ITALIC, BOLD, SpriteMap,
+    glTexParameteri, glTexStorage3D, glTexSubImage3D, glUseProgram,
-    glEnableVertexAttribArray, glVertexAttribPointer, copy_image_sub_data
+    glVertexAttribDivisor, glVertexAttribPointer, replace_or_create_buffer
 )
+from .fonts.render import render_cell
 from .utils import safe_print
 
 GL_VERSION = (3, 3)
 VERSION = GL_VERSION[0] * 100 + GL_VERSION[1] * 10
 ITALIC_MASK = 1 << ITALIC
 BOLD_MASK = 1 << BOLD
+BASE = os.path.dirname(os.path.abspath(__file__))
+VertexArray = namedtuple('VertexArray', 'name size dtype normalized stride offset divisor')
 
 
-class Sprites:
+@lru_cache()
+def load_shaders(name):
+    vert = open(os.path.join(BASE, '{}_vertex.glsl'.format(name))).read()
+    frag = open(os.path.join(BASE, '{}_fragment.glsl'.format(name))).read()
+    return vert, frag
+
+
+class BufferManager:  # {{{
+
+    def __init__(self):
+        self.sizes = {}
+        self.types = {}
+        self.ctypes_types = {}
+        self.name_count = 0
+
+    def create(self, for_use=GL_ARRAY_BUFFER):
+        buf_id = glGenBuffers(1)
+        self.types[buf_id] = for_use
+        self.sizes.pop(buf_id, None)
+        self.ctypes_types.pop(buf_id, None)
+        return buf_id
+
+    def delete(self, buf_id):
+        if buf_id in self.types:
+            glDeleteBuffer(buf_id)
+            self.sizes.pop(buf_id, None)
+            self.types.pop(buf_id)
+            self.ctypes_types.pop(buf_id, None)
+
+    def set_data(self, buf_id, data, usage=GL_STREAM_DRAW, verify=False):
+        prev_sz = self.sizes.get(buf_id, 0)
+        new_sz = sizeof(data)
+        replace_or_create_buffer(buf_id, new_sz, prev_sz, addressof(data), usage, self.types[buf_id])
+        self.sizes[buf_id] = new_sz
+        self.ctypes_types[buf_id] = type(data)
+        if verify:
+            verify_data = self.get_data(buf_id)
+            if list(data) != list(verify_data):
+                raise RuntimeError('OpenGL failed to upload to buffer')
+
+    def get_data(self, buf_id):
+        verify_data = self.ctypes_types[buf_id]()
+        glGetBufferSubData(self.types[buf_id], buf_id, self.sizes[buf_id], 0, addressof(verify_data))
+        return verify_data
+
+    def bind(self, buf_id):
+        glBindBuffer(self.types[buf_id], buf_id)
+
+    def unbind(self, buf_id):
+        glBindBuffer(self.types[buf_id], 0)
+
+    @contextmanager
+    def bound_buffer(self, buf_id):
+        self.bind(buf_id)
+        yield
+        self.unbind(buf_id)
+
+
+buffer_manager = BufferManager()
+# }}}
+
+
+class Sprites:  # {{{
     ''' Maintain sprite sheets of all rendered characters on the GPU as a texture
     array with each texture being a sprite sheet. '''
 
@@ -43,15 +110,14 @@ class Sprites:
 
     def __init__(self):
         self.xnum = self.ynum = 1
-        self.sampler_num = 0
-        self.buffer_sampler_num = 1
         self.first_cell_cache = {}
         self.second_cell_cache = {}
         self.x = self.y = self.z = 0
-        self.texture_id = self.buffer_texture_id = None
+        self.texture_id = None
         self.last_num_of_layers = 1
         self.last_ynum = -1
-        self.texture_unit = GL_TEXTURE0
+        self.sampler_num = 0
+        self.texture_unit = GL_TEXTURE0 + self.sampler_num
         self.backend = SpriteMap(glGetIntegerv(GL_MAX_TEXTURE_SIZE), glGetIntegerv(GL_MAX_ARRAY_TEXTURE_LAYERS))
         self.lock = Lock()
 
@@ -103,7 +169,6 @@ class Sprites:
         glPixelStorei(GL_UNPACK_ALIGNMENT, 1)
         x, y = x * self.cell_width, y * self.cell_height
         glTexSubImage3D(tgt, 0, x, y, z, self.cell_width, self.cell_height, 1, GL_RED, GL_UNSIGNED_BYTE, addressof(buf))
-        glBindTexture(tgt, 0)
 
     def realloc_texture(self):
         tgt = GL_TEXTURE_2D_ARRAY
@@ -138,51 +203,28 @@ class Sprites:
         self.last_num_of_layers = znum
         self.last_ynum = self.backend.ynum
         self.texture_id = tex
-        glBindTexture(tgt, 0)
 
     def destroy(self):
         if self.texture_id is not None:
             glDeleteTexture(self.texture_id)
             self.texture_id = None
-        if self.buffer_texture_id is not None:
-            glDeleteTexture(self.buffer_texture_id)
 
     def ensure_state(self):
         if self.texture_id is None:
             self.realloc_texture()
-            self.buffer_texture_id = glGenTextures(1)
-            self.buffer_texture_unit = GL_TEXTURE1
-
-    def add_sprite_map(self):
-        return glGenBuffers(1)
-
-    def set_sprite_map(self, buf_id, data, usage=GL_STREAM_DRAW):
-        self.bind_sprite_map(buf_id)
-        glNamedBufferData(buf_id, sizeof(data), addressof(data), usage)
-
-    def bind_sprite_map(self, buf_id):
-        glBindBuffer(GL_TEXTURE_BUFFER, buf_id)
-        glTexBuffer(GL_TEXTURE_BUFFER, GL_RGB32UI, buf_id)
-
-    def destroy_sprite_map(self, buf_id):
-        glDeleteBuffer(buf_id)
 
     def __enter__(self):
         self.ensure_state()
         glActiveTexture(self.texture_unit)
         glBindTexture(GL_TEXTURE_2D_ARRAY, self.texture_id)
 
-        glActiveTexture(self.buffer_texture_unit)
-        glBindTexture(GL_TEXTURE_BUFFER, self.buffer_texture_id)
-
     def __exit__(self, *a):
         glBindTexture(GL_TEXTURE_2D_ARRAY, 0)
-        glBindTexture(GL_TEXTURE_BUFFER, 0)
+
-        glBindBuffer(GL_TEXTURE_BUFFER, 0)
+# }}}
-        glTexBuffer(GL_TEXTURE_BUFFER, GL_RGB32UI, 0)
 
 
-class ShaderProgram:
+class ShaderProgram:  # {{{
     """ Helper class for using GLSL shader programs """
 
     def __init__(self, vertex, fragment):
@@ -206,23 +248,43 @@ class ShaderProgram:
             raise ValueError('Error linking shader program: \n%s' % info.decode('utf-8'))
         glDeleteShader(vs_id)
         glDeleteShader(frag_id)
-        self.vao_id = glGenVertexArrays(1)
+        self.vertex_arrays = {}
-        self.buffers = {}
 
-    def add_vertex_array(self, name, size=3, dtype=GL_FLOAT, normalized=False, stride=0, offset=0):
+    def vertex_array(self, name, size=3, dtype=GL_FLOAT, normalized=False, stride=0, offset=0, divisor=0):
-        glBindVertexArray(self.vao_id)
+        return VertexArray(name, size, dtype, normalized, stride, offset, divisor)
-        if name not in self.buffers:
+
-            self.buffers[name] = glGenBuffers(1)
+    def add_vertex_arrays(self, *arrays):
-        glBindBuffer(GL_ARRAY_BUFFER, self.buffers[name])
+        vao_id = glGenVertexArrays(1)
-        aid = self.attribute_location(name)
+        self.vertex_arrays[vao_id] = buf_id = buffer_manager.create(for_use=GL_ARRAY_BUFFER)
-        glEnableVertexAttribArray(aid)
+        with self.bound_vertex_array(vao_id), buffer_manager.bound_buffer(buf_id):
-        glVertexAttribPointer(aid, size, dtype, normalized, stride, offset)
+            for x in arrays:
-        glBindBuffer(GL_ARRAY_BUFFER, 0)
+                aid = self.attribute_location(x.name)
+                if aid > -1:
+                    glEnableVertexAttribArray(aid)
+                    glVertexAttribPointer(aid, x.size, x.dtype, x.normalized, x.stride, x.offset)
+                    if x.divisor > 0:
+                        glVertexAttribDivisor(aid, x.divisor)
+            return vao_id
+
+    @contextmanager
+    def bound_vertex_array(self, vao_id):
+        glBindVertexArray(vao_id)
+        yield
         glBindVertexArray(0)
 
-    def send_vertex_data(self, name, data, usage=GL_STATIC_DRAW):
+    def remove_vertex_array(self, vao_id):
-        bufid = self.buffers[name]
+        buf_id = self.vertex_arrays.pop(vao_id, None)
-        glNamedBufferData(bufid, sizeof(data), addressof(data), usage)
+        if buf_id is not None:
+            glDeleteVertexArray(vao_id)
+            buffer_manager.delete(buf_id)
+
+    def send_vertex_data(self, vao_id, data, usage=GL_STREAM_DRAW):
+        bufid = self.vertex_arrays[vao_id]
+        buffer_manager.set_data(bufid, data, usage=usage)
+
+    def get_vertex_data(self, vao_id):
+        bufid = self.vertex_arrays[vao_id]
+        return buffer_manager.get_data(bufid)
 
     def __hash__(self) -> int:
         return self.program_id
@@ -260,8 +322,7 @@ class ShaderProgram:
 
     def __enter__(self):
         glUseProgram(self.program_id)
-        glBindVertexArray(self.vao_id)
 
     def __exit__(self, *args):
         glUseProgram(0)
-        glBindVertexArray(0)
+# }}}

kitty/tabs.py

@@ -3,18 +3,23 @@
 # License: GPL v3 Copyright: 2016, Kovid Goyal <kovid at kovidgoyal.net>
 
 from collections import deque
+from ctypes import addressof
 from functools import partial
 from threading import Lock
-from ctypes import addressof
 
+from .borders import Borders
+from .char_grid import calculate_gl_geometry, render_cells
 from .child import Child
 from .config import build_ansi_color_table
-from .constants import get_boss, appname, shell_path, cell_size, queue_action, viewport_size, WindowGeometry, GLuint
+from .constants import (
-from .fast_data_types import glfw_post_empty_event, Screen, DECAWM, DATA_CELL_SIZE, ColorProfile
+    GLuint, WindowGeometry, appname, cell_size, get_boss, queue_action,
-from .char_grid import calculate_gl_geometry, render_cells
+    shell_path, viewport_size
-from .layout import all_layouts, Rect
+)
+from .fast_data_types import (
+    DATA_CELL_SIZE, DECAWM, ColorProfile, Screen, glfw_post_empty_event
+)
+from .layout import Rect, all_layouts
 from .utils import color_as_int
-from .borders import Borders
 from .window import Window
 
 
@@ -32,9 +37,12 @@ class Tab:
         self.borders = Borders(opts)
         self.windows = deque()
         self.active_window_idx = 0
+        for i, which in enumerate('first second third fourth fifth sixth seventh eighth ninth tenth'.split()):
+            setattr(self, which + '_window', partial(self.nth_window, num=i))
         if session_tab is None:
             self.cwd = args.directory
             l = self.enabled_layouts[0]
+            self.current_layout = all_layouts[l](opts, self.borders.border_width, self.windows)
             if special_window is None:
                 queue_action(self.new_window)
             else:
@@ -42,10 +50,8 @@ class Tab:
         else:
             self.cwd = session_tab.cwd or args.directory
             l = session_tab.layout
+            self.current_layout = all_layouts[l](opts, self.borders.border_width, self.windows)
             queue_action(self.startup, session_tab)
-        self.current_layout = all_layouts[l](opts, self.borders.border_width, self.windows)
-        for i, which in enumerate('first second third fourth fifth sixth seventh eighth ninth tenth'.split()):
-            setattr(self, which + '_window', partial(self.nth_window, num=i))
 
     def startup(self, session_tab):
         for cmd in session_tab.windows:
@@ -201,7 +207,7 @@ class TabManager:
 
     def __init__(self, opts, args, startup_session):
         self.opts, self.args = opts, args
-        self.buffer_id = None
+        self.vao_id = None
         self.tabbar_lock = Lock()
         self.tabs = [Tab(opts, args, self.title_changed, t) for t in startup_session.tabs]
         self.cell_ranges = []
@@ -305,7 +311,7 @@ class TabManager:
         if needs_resize:
             queue_action(get_boss().tabbar_visibility_changed)
 
-    def update_tab_bar_data(self, sprites):
+    def update_tab_bar_data(self, sprites, cell_program):
         s = self.tab_bar_screen
         s.cursor.x = 0
         s.erase_in_line(2, False)
@@ -335,9 +341,9 @@ class TabManager:
         s.update_cell_data(
             sprites.backend, self.color_profile, addressof(self.sprite_map), self.default_fg, self.default_bg, True)
         sprites.render_dirty_cells()
-        if self.buffer_id is None:
+        if self.vao_id is None:
-            self.buffer_id = sprites.add_sprite_map()
+            self.vao_id = cell_program.create_sprite_map()
-        sprites.set_sprite_map(self.buffer_id, self.sprite_map)
+        cell_program.send_vertex_data(self.vao_id, self.sprite_map)
 
     def activate_tab_at(self, x):
         x = (x - self.window_geometry.left) // cell_size.width
@@ -357,5 +363,5 @@ class TabManager:
             return
         with self.tabbar_lock:
             if self.tabbar_dirty:
-                self.update_tab_bar_data(sprites)
+                self.update_tab_bar_data(sprites, cell_program)
-        render_cells(self.buffer_id, self.screen_geometry, cell_program, sprites)
+        render_cells(self.vao_id, self.screen_geometry, cell_program, sprites)

kitty/utils.py

@@ -14,7 +14,7 @@ from functools import lru_cache
 from time import monotonic
 
 from .constants import isosx
-from .fast_data_types import glfw_get_physical_dpi, wcwidth as wcwidth_impl
+from .fast_data_types import glfw_get_physical_dpi, wcwidth as wcwidth_impl, redirect_std_streams
 from .rgb import Color, to_color
 
 
@@ -181,7 +181,7 @@ def get_primary_selection():
         return ''  # There is no primary selection on OS X
     # glfw has no way to get the primary selection
     # https://github.com/glfw/glfw/issues/894
-    return subprocess.check_output(['xsel', '-p']).decode('utf-8')
+    return subprocess.check_output(['xsel', '-p'], stderr=open(os.devnull, 'wb'), stdin=open(os.devnull, 'rb')).decode('utf-8')
 
 
 def base64_encode(
@@ -203,7 +203,7 @@ def set_primary_selection(text):
         return  # There is no primary selection on OS X
     if isinstance(text, str):
         text = text.encode('utf-8')
-    p = subprocess.Popen(['xsel', '-i', '-p'], stdin=subprocess.PIPE)
+    p = subprocess.Popen(['xsel', '-i', '-p'], stdin=subprocess.PIPE, stdout=open(os.devnull, 'wb'), stderr=subprocess.STDOUT)
     p.stdin.write(text), p.stdin.close()
     p.wait()
 
@@ -215,3 +215,14 @@ def open_url(url, program='default'):
         cmd = shlex.split(program)
     cmd.append(url)
     subprocess.Popen(cmd).wait()
+
+
+def detach(fork=True, setsid=True, redirect=True):
+    if fork:
+        # Detach from the controlling process.
+        if os.fork() != 0:
+            raise SystemExit(0)
+    if setsid:
+        os.setsid()
+    if redirect:
+        redirect_std_streams(os.devnull)

setup.py

@@ -319,7 +319,7 @@ def package(args, for_bundle=False):  # {{{
     def src_ignore(parent, entries):
         return [
             x for x in entries
-            if '.' in x and x.rpartition('.')[2] not in ('py', 'so', 'conf')
+            if '.' in x and x.rpartition('.')[2] not in ('py', 'so', 'conf', 'glsl')
         ]
 
     shutil.copytree('kitty', os.path.join(libdir, 'kitty'), ignore=src_ignore)